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Articles 301 - 330 of 1257

Full-Text Articles in Architectural Engineering

Zero Net Energy Test House, Timothy Hemsath, James D. Goedert, Avery Don Schwer, Yong Cho Sep 2022

Zero Net Energy Test House, Timothy Hemsath, James D. Goedert, Avery Don Schwer, Yong Cho

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper describes the first phase of a residential research program to reduce the impact of new construction on the environment through research and education using a Zero Net Energy Test House as a framework. Containing four bedrooms, three and a half baths, the 1,800 square foot house, 1,000 square foot basement, is located in Omaha, Nebraska. It is being used to validate several research projects and provides a platform for applications research of a number of technological advances. Laminated photovoltaic solar panels, a wind turbine, and an occupant monitoring energy control system are some of the sustainable design innovations …

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Artificial Intelligence In Civil Infrastructure Health Monitoring—Historical Perspectives, Current Trends, And Future Visions, Tarutal Ghosh Mondal, Genda Chen Sep 2022

Artificial Intelligence In Civil Infrastructure Health Monitoring—Historical Perspectives, Current Trends, And Future Visions, Tarutal Ghosh Mondal, Genda Chen

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Over the past 2 decades, the use of artificial intelligence (AI) has exponentially increased toward complete automation of structural inspection and assessment tasks. This trend will continue to rise in image processing as unmanned aerial systems (UAS) and the internet of things (IoT) markets are expected to expand at a compound annual growth rate of 57.5% and 26%, respectively, from 2021 to 2028. This paper aims to catalog the milestone development work, summarize the current research trends, and envision a few future research directions in the innovative application of AI in civil infrastructure health monitoring. A blow-by-blow account of the …

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Common Ground Newsletter Fall 2022, Missouri University Of Science And Technology Sep 2022

Common Ground Newsletter Fall 2022, Missouri University Of Science And Technology

Common Ground

- Summer camps returned in person

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Flexural Strength Of Innovative Thin-Walled Composite Cold-Formed Steel/Pe-Ecc Beams, Ahmed Sheta, Xing Ma, Yan Zhuge, Mohamed Elgawady, Julie Mills, Elsayed Abd-Elaal Sep 2022

Flexural Strength Of Innovative Thin-Walled Composite Cold-Formed Steel/Pe-Ecc Beams, Ahmed Sheta, Xing Ma, Yan Zhuge, Mohamed Elgawady, Julie Mills, Elsayed Abd-Elaal

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A detailed experimental investigation on the flexural behaviour of an innovative precast composite element combining cold-formed steel (CFS) and engineered cementitious composites (ECC) is presented in this paper. Bonding ECC to the lightweight thin-walled CFS sections enhanced the buckling, bearing, and torsional properties of the composite sections. The proposed composite system will be used as precast flexural members in framed structures with large spans or as a rehabilitation approach for corroded cold-formed and hot-rolled steel flexural members. Simply supported beams with comparatively long spans with span-to-depth ratios of 6.83 and 13.48 were installed back-to-back and tested under a 4-point loading …

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Some New Insights For Inferring Diapycnal (Irreversible) Diffusivity In Stably Stratified Turbulence, Amrapalli Garanaik, Subhas Karan Venayagamoorthy Sep 2022

Some New Insights For Inferring Diapycnal (Irreversible) Diffusivity In Stably Stratified Turbulence, Amrapalli Garanaik, Subhas Karan Venayagamoorthy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

New insight for inferring diapycnal diffusivity in stably stratified turbulent flows is obtained based on physical scaling arguments and tested using high-resolution direct numerical simulation data. It is shown that the irreversible diapycnal diffusivity can be decomposed into a diapycnal length scale that represents an inner scale of turbulence and a diapycnal velocity scale. Furthermore, it is shown that the diapycnal length scale and velocity scale can be related to the measurable Ellison length scale (LE) that represents outer scale of turbulence and vertical turbulent velocity scale (w ′) through a turbulent Froude number scaling analysis. The turbulent Froude number …

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Investigation On Chloride Binding Capacity And Stability Of Friedel's Salt In Graphene Oxide Reinforced Cement Paste, Wu Jian Long, Xuanhan Zhang, Gan Lin Feng, Jing Xie, Feng Xing, Biqin Dong, Jinrui Zhang, Kamal Khayat Sep 2022

Investigation On Chloride Binding Capacity And Stability Of Friedel's Salt In Graphene Oxide Reinforced Cement Paste, Wu Jian Long, Xuanhan Zhang, Gan Lin Feng, Jing Xie, Feng Xing, Biqin Dong, Jinrui Zhang, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Chloride binding capacity is one of the important factors affecting chloride induced rebar corrosion in reinforced concrete structures. Moreover, the stability of Friedel's salt will also affect the chloride binding capacity of cement-based materials. This study investigates the effect of graphene oxide (GO) on the chloride binding capacity of cement paste and stability of Friedel's salt under different pH conditions. Experiments of X-ray diffraction (XRD), Thermogravimetric analyzer (TGA), Scanning electron microscope (SEM) and Energy dispersive spectroscopy (EDS) were performed to analyze the phase assemblage, micro morphology, element ratio and the enhanced mechanisms. Results showed that the 0.2 wt% GO addition …

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Critical Evaluation Of Time And Cost Of Terrestrial Laser Scanning For Construction Automated Qa Analysis, Joao Rocha, Davitt Lamon Aug 2022

Critical Evaluation Of Time And Cost Of Terrestrial Laser Scanning For Construction Automated Qa Analysis, Joao Rocha, Davitt Lamon

Capstone Reports

Many governments agencies and private owners are demanding up-to-date information related to the current conditions of their facilities. Conventional QA is time-consuming and inefficient; thus, 3D terrestrial laser scanning (TLS) technology has been adopted due to the fast speed and high accuracy in acquiring data. Automated QA analysis can reduce the labour and time needed, reduce the costs, and improve the overall project efficiency. However, very few research efforts have been made to study the benefits of the automated QA analysis in a quantitative way. The process of the TLS-based geometric QA based in an automated data analysis process is …

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Anti-Washout Concrete: An Overview, Hao Lu, Xiao Sun, Hongyan Ma Aug 2022

Anti-Washout Concrete: An Overview, Hao Lu, Xiao Sun, Hongyan Ma

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Anti-washout concrete (AWC) is a special cement-based material that can be directly employed in underwater environments without dispersion. It was developed around 50 years ago, and more than 150 journal articles and technical reports have been published. This paper provides a holistic review about the basic fresh-state and hardened-state properties of the AWC, such as water (washout) resistance, consistency, bleeding and segregation resistance, mechanical properties, and durability, as well as relevant testing methods. The discrepancies between AWC's characteristics and those of conventional concrete are clearly presented. The mixture compositions, supplementary cementitious materials (SCMs), and other conditions that affect AWC's performance …

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The Use Of Gpr To Investigate The Effect Of Steel Fiber Distribution On The Mechanical Behavior Of Frc, Paola Machado Barreto Manhães, José Tavares Araruna Júnior, Genda Chen, Neil Lennart Anderson, Erik Valloti Pereira, Flávio De Andrade Silva Aug 2022

The Use Of Gpr To Investigate The Effect Of Steel Fiber Distribution On The Mechanical Behavior Of Frc, Paola Machado Barreto Manhães, José Tavares Araruna Júnior, Genda Chen, Neil Lennart Anderson, Erik Valloti Pereira, Flávio De Andrade Silva

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The present work focuses on the steel fiber distribution in self-consolidating concrete short beams. The objective is to assess the feasibility of the ground penetrating radar (GPR) in evaluating the homogeneity of fibers within concrete materials, for use in testing laboratories to study the modes of placing and compaction employed for preparing specimens during quality control or material development. Self-consolidating concrete beams were cast, tested, and evaluated. A GPR survey employing a concrete scanning system with a shielded 1.2 GHz center frequency was performed on self-consolidating casted short beams just before a monotonic four-point bending test was carried out. After …

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Llam-Mdcnet For Detecting Remote Sensing Images Of Dead Tree Clusters, Zongchen Li, Ruoli Yang, Weiwei Cai, Yongfei Xue, Yaowen Hu, Liujun Li Aug 2022

Llam-Mdcnet For Detecting Remote Sensing Images Of Dead Tree Clusters, Zongchen Li, Ruoli Yang, Weiwei Cai, Yongfei Xue, Yaowen Hu, Liujun Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Clusters of dead trees are forest fires-prone. To maintain ecological balance and realize its protection, timely detection of dead trees in forest remote sensing images using existing computer vision methods is of great significance. Remote sensing images captured by Unmanned aerial vehicles (UAVs) typically have several issues, e.g., mixed distribution of adjacent but different tree classes, interference of redundant information, and high differences in scales of dead tree clusters, making the detection of dead tree clusters much more challenging. Therefore, based on the Multipath dense composite network (MDCN), an object detection method called LLAM-MDCNet is proposed in this paper. First, …

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Professional And Organizational Leadership Role In Ethics Management: Avoiding Reliance On Ethical Codification And Nurturing Ethical Culture, Islam H. El-Adaway, Marianne Jennings Aug 2022

Professional And Organizational Leadership Role In Ethics Management: Avoiding Reliance On Ethical Codification And Nurturing Ethical Culture, Islam H. El-Adaway, Marianne Jennings

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The engineering profession has experienced some ethical cases that were rarely reported, scrutinized, or discussed because: they did not necessarily represent violations of existing codes even if they breached ethical principles; those within the organization were not prepared to take steps to address the issues or impose sanction; an/or some of the personnel associated with these cases resorted to silence to avoid being labeled as trouble-makers in their organizations and, perhaps, more broadly, in society. The goal of this paper is to heighten managerial awareness of ethical issues, interrelated ethical lapses, and appropriate responsive actions within professional engineering communities. As …

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The Use Of Alkaline Co2 Solvent For The Co2 Curing Of Blast-Furnace Slag Mortar, Seong Ho Han, Yubin Jun, Jae Hong Kim Aug 2022

The Use Of Alkaline Co2 Solvent For The Co2 Curing Of Blast-Furnace Slag Mortar, Seong Ho Han, Yubin Jun, Jae Hong Kim

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Moving toward carbon neutrality in the construction industry involves utilizing CO2 to produce construction materials. CO2 curing of cement-based materials induces carbonation at an early age, which enhances strength and performance. A new process for the CO2 curing is proposed using CO2-dissolved curing water, which needs no massive CO2-gas chamber encasing cement-based materials in mild pressure. Gaseous CO2 was dissolved in 1 M aqueous KOH solution beforehand, and mortar samples made with ground-granulated blast furnace slag were submerged and cured. The CO2-water curing for 3 days carbonated the samples but …

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Coupled Effect Of Fiber And Granular Skeleton Characteristics On Packing Density Of Fiber-Aggregate Mixtures, Naimeh Nouri, Masoud Hosseinpoor, Ammar Yahia, Kamal Khayat Aug 2022

Coupled Effect Of Fiber And Granular Skeleton Characteristics On Packing Density Of Fiber-Aggregate Mixtures, Naimeh Nouri, Masoud Hosseinpoor, Ammar Yahia, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The addition of fiber to cementitious materials enhances mechanical performance but can reduce workability of the fiber-reinforced concrete (FRC) mixtures. This can be due to the negative effect of fibers on packing density (PD) of the fiber-coarse aggregate (F-A) combination. The performance of FRC, as a diphasic suspension, is dependent on the characteristics of both F-A (suspended-solid skeleton) and mortar (suspending liquid) phases. PD can reflect the voids within the F-A skeleton to be filled with mortar. An adequate optimization of the characteristics of the F-A skeleton can modify the performance of FRC in fresh and hardened states. The F-A …

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Quantifying The Workability Of Calcium Sulfoaluminate Cement Paste Using Time-Dependent Rheology, Sukanta K. Mondal, Adam Welz, Carrie Clinton, Kamal Khayat, Aditya Kumar, Monday Uchenna Okoronkwo Aug 2022

Quantifying The Workability Of Calcium Sulfoaluminate Cement Paste Using Time-Dependent Rheology, Sukanta K. Mondal, Adam Welz, Carrie Clinton, Kamal Khayat, Aditya Kumar, Monday Uchenna Okoronkwo

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Poor workability is a common feature of calcium sulfoaluminate (CSA) cement paste. Multiple chemical admixtures, such as set retarders and dispersants, are frequently employed to improve the workability and delay the setting of CSA cement paste. A quantitative assessment of the compatibility, efficiency, and the effects of the admixtures on cement paste workability is critical for the design of an appropriate paste formulation and admixture proportioning. Very limited studies are available on the quantitative rheology-based method for evaluating the workability of calcium sulfoaluminate cement pastes. This study presents a novel and robust time-dependent rheological method for quantifying the workability of …

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Ds-Menet For The Classification Of Citrus Disease, Xuyao Liu, Yaowen Hu, Guoxiong Zhou, Weiwei Cai, Mingfang He, Jialei Zhan, Yahui Hu, Liujun Li Jul 2022

Ds-Menet For The Classification Of Citrus Disease, Xuyao Liu, Yaowen Hu, Guoxiong Zhou, Weiwei Cai, Mingfang He, Jialei Zhan, Yahui Hu, Liujun Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Affected by various environmental factors, citrus will frequently suffer from diseases during the growth process, which has brought huge obstacles to the development of agriculture. This paper proposes a new method for identifying and classifying citrus diseases. Firstly, this paper designs an image enhancement method based on the MSRCR algorithm and homomorphic filtering algorithm optimized by Laplacian (HFLF-MS) to highlight the disease characteristics of citrus. Secondly, we designed a new neural network DS-MENet based on the DenseNet-121 backbone structure. In DS-MENet, the regular convolution in Dense Block is replaced with depthwise separable convolution, which reduces the network parameters. The ReMish …

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Commercial Janus Fabrics As Reusable Facemask Materials: A Balance Of Water Repellency, Filtration Efficiency, Breathability, And Reusability, Steven Cheng, Weixing Hao, Yuchen Wang, Yang Wang, Shu Yang Jul 2022

Commercial Janus Fabrics As Reusable Facemask Materials: A Balance Of Water Repellency, Filtration Efficiency, Breathability, And Reusability, Steven Cheng, Weixing Hao, Yuchen Wang, Yang Wang, Shu Yang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Facemasks as personal protective equipment play a significant role in helping prevent the spread of viruses during the COVID-19 pandemic. A desired reusable fabric facemask should strike a balance of water repellency, good filtration efficiency (FE), breathability, and mechanical robustness against washing cycles. Despite significant efforts in testing various commercial fabric materials for filtration efficiency, few have investigated fabric performance as a function of the fiber/yarn morphology and wettability of the fabric itself. In this study, we examine commercial fabrics with Janus-like behaviors to determine the best reusable fabric facemask materials by understanding the roles of morphology, porosity, and wettability …

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Mdam-Drnet: Dual Channel Residual Network With Multi-Directional Attention Mechanism In Strawberry Leaf Diseases Detection, Tingjing Liao, Ruoli Yang, Peirui Zhao, Wenhua Zhou, Mingfang He, Liujun Li Jul 2022

Mdam-Drnet: Dual Channel Residual Network With Multi-Directional Attention Mechanism In Strawberry Leaf Diseases Detection, Tingjing Liao, Ruoli Yang, Peirui Zhao, Wenhua Zhou, Mingfang He, Liujun Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The growth of strawberry plants is affected by a variety of strawberry leaf diseases. Yet, due to the complexity of these diseases' spots in terms of color and texture, their manual identification requires much time and energy. Developing a more efficient identification method could be imperative for improving the yield and quality of strawberry crops. To that end, here we proposed a detection framework for strawberry leaf diseases based on a dual-channel residual network with a multi-directional attention mechanism (MDAM-DRNet). (1) In order to fully extract the color features from images of diseased strawberry leaves, this paper constructed a color …

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Life Cycle Cost Analysis Of High Friction Surface Treatment Applications, Eslam Deef-Allah, Korrenn Broaddus, Magdy Abdelrahman Jul 2022

Life Cycle Cost Analysis Of High Friction Surface Treatment Applications, Eslam Deef-Allah, Korrenn Broaddus, Magdy Abdelrahman

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Life cycle cost analyses for high friction surface treatment (HFST) applications were executed relying on a Microsoft Excel program developed by the researchers. Calcined bauxite (CB), five CB alternatives, and epoxy binder were utilized in the HFST applications. The aggregates' performances were evaluated through the aggregate image measurement system (AIMS) before and after Micro-Deval polishing. The performance of the HFST applications was evaluated by the dynamic friction tester (DFT) and British pendulum (BP). The major purpose of this program was to present a rational method for converting different input data (project and material specifics) to comparable output data (net present …

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Quantification Of The State Of Practice Of Offsite Construction And Related Technologies: Current Trends And Future Prospects, Rayan H. Assaad, Islam H. El-Adaway, Makarand Hastak, Kim Lascola Needy Jul 2022

Quantification Of The State Of Practice Of Offsite Construction And Related Technologies: Current Trends And Future Prospects, Rayan H. Assaad, Islam H. El-Adaway, Makarand Hastak, Kim Lascola Needy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Although some researchers and practitioners have perceived that the current reliance on offsite construction methods is high, other studies have hypothesized that the use of offsite construction techniques is still considered to be somehow limited. To this end, this paper aims to quantify the state of practice of offsite construction in terms of current trends and future prospects for the overall industry as well as the following main sectors: industrial, building and commercial, and infrastructure. First, a questionnaire was formed, pilot-tested, distributed, and completed by 100 construction practitioners. Second, the questionnaire's internal and external validity and reliability were examined using …

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The Impact Of Offsite Construction On The Workforce: Required Skillset And Prioritization Of Training Needs, Rayan H. Assaad, Islam H. El-Adaway, Makarand Hastak, Kim Lascola Needy Jul 2022

The Impact Of Offsite Construction On The Workforce: Required Skillset And Prioritization Of Training Needs, Rayan H. Assaad, Islam H. El-Adaway, Makarand Hastak, Kim Lascola Needy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Offsite construction has showed great potential in addressing many of the industry's problems. While multiple research efforts have been directed at examining different offsite construction aspects, few studies investigated the workforce-related aspects. Therefore, this study aims to address this knowledge gap by examining the impact of offsite construction on the workforce, as represented by the following five workforce categories: offsite, onsite, engineering and design, construction and fabrication, and administrative workforce. To this end, this paper (1) determined the impact of offsite construction on the skillset (reskilling or upskilling) and the demand (shrink or growth) for the offsite and onsite construction …

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A Proactive Risk Assessment Framework To Maximize Schedule Benefits Of Modularization In Construction Projects, Mohamad Abdul Nabi, Islam H. El-Adaway Jul 2022

A Proactive Risk Assessment Framework To Maximize Schedule Benefits Of Modularization In Construction Projects, Mohamad Abdul Nabi, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Various studies developed models and decision support tools to assess the feasibility and optimize the use of modularization. However, none has explored the schedule benefits of modular construction. This paper fills this knowledge gap. To this end, the authors completed the following: (1) analyzed the criticalities of the various modular risk factors on potential schedule savings using data collected from 48 industry professionals, (2) investigated the schedule savings associated with the use of modularization using data collected from 68 modular construction projects, and (3) developed an interrelated assessment model to calculate the schedule savings of using modularization. The provided model …

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Mpc-Stanet: Alzheimer’S Disease Recognition Method Based On Multiple Phantom Convolution And Spatial Transformation Attention Mechanism, Yujian Liu, Kun Tang, Weiwei Cai, Aibin Chen, Guoxiong Zhou, Liujun Li, Runmin Liu Jun 2022

Mpc-Stanet: Alzheimer’S Disease Recognition Method Based On Multiple Phantom Convolution And Spatial Transformation Attention Mechanism, Yujian Liu, Kun Tang, Weiwei Cai, Aibin Chen, Guoxiong Zhou, Liujun Li, Runmin Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Alzheimer's disease (AD) is a progressive neurodegenerative disease with insidious and irreversible onset. The recognition of the disease stage of AD and the administration of effective interventional treatment are important to slow down and control the progression of the disease. However, due to the unbalanced distribution of the acquired data volume, the problem that the features change inconspicuously in different disease stages of AD, and the scattered and narrow areas of the feature areas (hippocampal region, medial temporal lobe, etc.), the effective recognition of AD remains a critical unmet need. Therefore, we first employ class-balancing operation using data expansion and …

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Designs Of Abrasion Resistant And Durable Concrete Pavements Made With Scms For Cold Climates, Diane Murph, Jun Liu, Jenny Liu Jun 2022

Designs Of Abrasion Resistant And Durable Concrete Pavements Made With Scms For Cold Climates, Diane Murph, Jun Liu, Jenny Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Rutting from studded tire wear is a typical pavement distress in cold climates such as that of Alaska and other northern states. Current state-of-the-art advancements in material technology and concrete pavement design have allowed for implementation of improved materials and concrete pavement sections that are more resistant to rutting. The addition of supplementary cementitious materials (SCMs) has been identified as one effective way to produce concrete pavements with better abrasion resistance. The objective of this study was to identify and develop concrete pavement mix designs containing SCMs that can provide excellent abrasion resistance and durability to address rutting from studded …

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Comparing Oranges Versus Grapes As A Metaphor Of The Nurse+Engineer, Daniel B. Oerther, Sarah Oerther Jun 2022

Comparing Oranges Versus Grapes As A Metaphor Of The Nurse+Engineer, Daniel B. Oerther, Sarah Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

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Mechanisms Affecting Viscosity Of Cement Paste Made With Microfines Of Manufactured Sand, Jiang Zhu, Jiaping Liu, Kamal Khayat, Xin Shu, Qianping Ran, Zhen Li Jun 2022

Mechanisms Affecting Viscosity Of Cement Paste Made With Microfines Of Manufactured Sand, Jiang Zhu, Jiaping Liu, Kamal Khayat, Xin Shu, Qianping Ran, Zhen Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Viscosity of cement-based materials incorporating manufactured sand is affected by the content and physical properties of the microfines in the sand. However, some of the mechanisms affecting the viscosity remain unclear. This paper investigates the effect of microfine type and content on the apparent viscosity (ηapp) and residual viscosity in/near pseudo-Newtonian regime (ηrespse−New) of cement pastes. Limestone (LS), slate (ST), and tuff (TF) microfines with different specific surface areas were investigated. Test results showed that, by deducting the greater contribution of yield stress to ηapp when using finer microfines, the increase of ηrespse−New at a given PCE dosage was mainly …

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Feasibility Study On Novel Fire-Resistant Coating Materials, Anyou Zhu, Hanli Wu, Jenny Liu Jun 2022

Feasibility Study On Novel Fire-Resistant Coating Materials, Anyou Zhu, Hanli Wu, Jenny Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Over the last few decades, wildfires in the United States have caused severe damage and property losses. As more houses are being built in areas prone to wildfire, enhancing the fire resistance of structures and buildings is critical and in great need. This paper presents a preliminary study to explore and develop some innovative surface-bonded fire-resistant coating materials for this purpose. The feasibility of these materials [i.e., high performance cement mortar (HPCM), geopolymer mortar (GPM), and magnesium phosphate cement mortar (MPCM)] was assessed considering the workability, adhesion to structure surface, and fire property. The Taguchi-based mix designs of HPCM, GPM, …

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On Internal Resonance Analysis Of A Double-Cable-Stayed Shallow-Arch Model With Elastic Supports At Both Ends, Xiaoyang Su, Houjun Kang, Tieding Guo, Guirong Grace Yan Jun 2022

On Internal Resonance Analysis Of A Double-Cable-Stayed Shallow-Arch Model With Elastic Supports At Both Ends, Xiaoyang Su, Houjun Kang, Tieding Guo, Guirong Grace Yan

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In previous research on the nonlinear dynamics of cable-stayed bridges, boundary conditions were not properly modeled in the modeling. In order to obtain the nonlinear dynamics of cable-stayed bridges more accurately, a double-cable-stayed shallow-arch model with elastic supports at both ends and the initial configuration of bridge deck included in the modeling is developed in this study. The in-plane eigenvalue problems of the model are solved by dividing the shallow arch (SA) into three partitions according to the number of cables and the piecewise functions are taken as trial functions of the SA. Then, the in-plane one-to-one-to-one internal resonance among …

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Guidelines For The Eeri Seismic Design Competition, Kate Robinson Jun 2022

Guidelines For The Eeri Seismic Design Competition, Kate Robinson

Architectural Engineering

The Earthquake Engineering Research Institute (EERI) has been dedicated to exposing undergraduate students to the wide range of interdisciplinary subjects related to earthquake engineering through the Seismic Design Competition. In 2022, California Polytechnic State University, San Luis Obispo (Cal Poly) sent 14 students to Salt Lake City, Utah for the competition – to compete with 31 other teams who all tackled the competition problem statement uniquely. The 2022 team was tasked with the research, design, analysis, and construction of a new structure to be built in downtown Salt Lake City, with the goal of replicating the design sequence of real-world …

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Sage Garden Pavilion Shade Structure, Anthony Razouk Karroum, Manuel Bermudez, Matthew Kilbride, Sarah Holt, Marisa Martineau Jun 2022

Sage Garden Pavilion Shade Structure, Anthony Razouk Karroum, Manuel Bermudez, Matthew Kilbride, Sarah Holt, Marisa Martineau

Architectural Engineering

Form finding, testing, and construction of funicular double-layered shells in an interdisciplinary format with a focus on designing a shade structure for the San Luis Obispo Botanical Garden Children’s Pavilion. In the process, challenges such as connection design, materiality, storage, and more are explored and refined in relation to shell structures.

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Improving Interprofessional Environmental Health Education Using The Leave No One Behind Framework, Daniel B. Oerther, Sarah E. Oerther Jun 2022

Improving Interprofessional Environmental Health Education Using The Leave No One Behind Framework, Daniel B. Oerther, Sarah E. Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

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