Performance Of Drilled Shaft Under Combination Of Complicated Loads Under Hurricane Event,
2019
University of Texas at San Antonio
Performance Of Drilled Shaft Under Combination Of Complicated Loads Under Hurricane Event, Jie Huang, Sazzad Bin-Shafique
Publications
This project includes experimental and numerical studies to investigate and assess the impact of vertical loads on a laterally loaded drilled shaft under various conditions. The experimental study includes lab testing and lab-scale load test to examine a drilled shaft subjected to vertical and lateral loads at a reduced scale. With the data obtained from the lab-scale testing, a numerical model was calibrated, which was used to perform a parametric study to scrutinize the effect of many possible factors such as soil stiffness, soil friction angle, and drilled shaft geometry. With all the factors considered in this study, the vertical …
Investigation Of Physical And Dynamic Properties Of High Porous Concrete,
2019
Baton Rouge Community College
Investigation Of Physical And Dynamic Properties Of High Porous Concrete, Ildar Akhmadullin
Publications
This project pursued two main objectives: (1) providing opportunities to Baton Rouge Community College (BRCC) students to develop hands-on laboratory skills and exposure to the transportation field, and (2) investigating porous concrete properties. Several BRCC student groups performed the work presented within this report; students prepared samples with different porosity and permeability according to standard specifications. The testing of the samples was performed at the Louisiana Transportation Research Center (LTRC) facility under the supervision of LTRC specialists. Findings indicate that the porosity of samples is backward proportional to the compression strength. This function is not linear but can be estimated …
Toward Non-Corrosion And Highly Sustainable Structural Members By Using Ultra-High-Performance Materials For Transportation Infrastructure,
2019
University of Texas at Arlington
Toward Non-Corrosion And Highly Sustainable Structural Members By Using Ultra-High-Performance Materials For Transportation Infrastructure, Shih-Ho Chao, Ashish Karmacharya
Publications
This research focused on investigating a highly sustainable and efficient reinforced concrete structural member for future infrastructure by utilizing emerging high-performance materials. These materials include ultra-high-performance fiber-reinforced concrete (UHP-FRC) and corrosion-resistant high-strength fiber-reinforced polymer (FRP) bars. Four reduced scale UHP-FRC specimens were tested under large displacement reversals to prove the proposed new ductile-concrete strong-reinforcement (DCSR) design concept by fully utilizing these ultra-high-performance materials. Micro steel fibers were incorporated into three specimens and ultra-high molecular weight polyethylene fibers were blended into the fourth specimen. One specimen with ASTM A1035 MMFX high-strength steel rebars, one with high-strength glass fiber reinforced polymer (GFRP) …
Evaluating How The Quality Of Pedestrian Infrastructure Affects The Choice To Walk,
2019
University of New Mexico
Evaluating How The Quality Of Pedestrian Infrastructure Affects The Choice To Walk, Gregory Rowangould, Alexis Corning-Padilla
Publications
While the benefits of walking are well understood, the physical design of sidewalks and their maintenance needs generally receive much less attention in both research and practice than the infrastructure used by other modes of transportation. As a result, we know comparatively little about how the design of sidewalks and quality of the overall pedestrian environment affect the decision to walk. In our study we conducted a household travel survey to collect data on walking frequency and attributes related to sidewalk quality and the quality of the walking environment in Albuquerque, New Mexico. We used summary statistics and statistical modeling …
Combining Virtual Reality And Machine Learning For Enhancing The Resiliency Of Transportation Infrastructure In Extreme Events,
2019
Louisiana State University
Combining Virtual Reality And Machine Learning For Enhancing The Resiliency Of Transportation Infrastructure In Extreme Events, Supratik Mukhopadhyay, Yimin Zhu, Ravindra Gudishala
Publications
Traffic management models that include route choice form the basis of traffic management systems. High-fidelity models that are based on rapidly evolving contextual conditions can have significant impact on smart and energy efficient transportation. Existing traffic/route choice models are generic and are calibrated on static contextual conditions. These models do not consider dynamic contextual conditions such as the location, failure of certain portions of the road network, the social network structure of population inhabiting the region, route choices made by other drivers, extreme conditions, etc. As a result, the model’s predictions are made at an aggregate level and for a …
Integrated Full-Scale Physical Experiments And Numerical Modeling Of The Performance And Rehabilitation Of Highway Embankments,
2019
Louisiana State University
Integrated Full-Scale Physical Experiments And Numerical Modeling Of The Performance And Rehabilitation Of Highway Embankments, Navid Jafari, Anand Puppala, Sayantan Chakraborty, Burak Boluk
Publications
The study aimed to fundamentally understand how soil strength and hydraulic properties are impacted by recurring cycles of wetting and drying induced by climate variability, with the practical implication of forecasting the stability of highway embankment slopes. The review of literature on the effects of long-term cyclic wetting-drying phases on hydro-mechanical properties of clayey soils suggests that only a few cycles of wetting and drying can impact the strength and hydraulic conductivity, where the latter can increase several orders of magnitude. Laboratory model-scale experiments of Louisiana and Texas soils are still ongoing and will relate the laboratory test results to …
Development Of Geopolymer-Based Cement And Soil Stabilizers For Transportation Infrastructure,
2019
Texas A&M University
Development Of Geopolymer-Based Cement And Soil Stabilizers For Transportation Infrastructure, Miladin Radovic, Anand Puppala
Publications
Geopolymer Cement (GPC) has drawn much attention in the recent years as an alternative to Ordinary Portland Cement (OPC) for soil stabilization, pavements, bridges and other transportation structures due to their good mechanical properties in comparison to OPC. In addition, GPC can be processed at room temperatures from aqueous solutions of waste materials (e.g. fly ash) or abundant natural sources (e.g. clay), thereby significantly reducing CO2 production associated with processing of OPC. As such, GPC proves to be a more sustainable and environmentally friendly alternative than OPC. This research explores methods to develop GPC with desired properties and evaluate their …
How Effective Are Toll Roads In Improving Operational Performance?,
2019
University of North Carolina at Charlotte
How Effective Are Toll Roads In Improving Operational Performance?, Sonu Mathew, Srinivas S. Pulugurtha
Mineta Transportation Institute
The main focus of this research is to develop a systematic analytical framework and evaluate the effect of a toll road on region’s traffic using travel time and travel time reliability measures. The travel time data for the Triangle Expressway in Raleigh, North Carolina, United States was employed for the assessment process. The spatial and temporal variations in the travel time distributions on the toll road, parallel alternate route, and near-vicinity cross-streets were analyzed using various travel time reliability measures. The results indicate that the Triangle Expressway showed a positive trend in reliability over the years of its operation. The …
Research On Optimization Of The Ship Routeing System In Qiongzhou Strait,
2019
World Maritime University
Research On Optimization Of The Ship Routeing System In Qiongzhou Strait, Qifu Wang
Maritime Safety & Environment Management Dissertations (Dalian)
No abstract provided.
Study On The Reduction Of Carbon Emission，Results From The Vehicles In The Shanghai Port’S Container Collection And Distribution System,
2019
World Maritime University
Study On The Reduction Of Carbon Emission，Results From The Vehicles In The Shanghai Port’S Container Collection And Distribution System, Chaofeng Chen
World Maritime University Dissertations
No abstract provided.
Stability Of Slopes Of Embankments Of Railway Access Road To Jsc "Shargunkumir",
2019
Research Center “Track Infrastructure and Wheel-Rail Interaction Issues”, JSC “Railway Research Institute” (JSC “VNIIZhT”) (Moscow, Russia)
Stability Of Slopes Of Embankments Of Railway Access Road To Jsc "Shargunkumir", U.E. Ergashev, N.I. Begmatov, F.F. Eshonov
Journal of Tashkent Institute of Railway Engineers
The article deals with the stability of the embankment slope. The scheme for the calculation and the results of the calculation of the stability of the embankment slope are presented. Based on the calculation results, transverse embankment profiles with a height of more than 12 m are designed and recommended for use
Technology Of Strengthening Of Embankment Of Railways Of Sandy Soils With Application Of Geosynthetic Materials,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
Technology Of Strengthening Of Embankment Of Railways Of Sandy Soils With Application Of Geosynthetic Materials, K.S. Lesov
Journal of Tashkent Institute of Railway Engineers
This article reduced the technology of strengthening the embankment of the railway roadbed from sandy soils with the use of geosynthetic materials. Constructive and technological solutions execution of work are given
Some Aspects Of Evaluating Economic Efficiency During Thermal Renewal Of External Walls Of Civil Buildings,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
Some Aspects Of Evaluating Economic Efficiency During Thermal Renewal Of External Walls Of Civil Buildings, S.S. Shaumarov, S.I. Kandakhorov
Journal of Tashkent Institute of Railway Engineers
This article presents the results of calculations to determine the payback period for the installation of additional insulation of the outer walls of civil buildings, taking into account the increase in tariffs for thermal energy. From a practical point of view, this calculation allows us to evaluate the economic efficiency of the thermal renewal of the outer walls of civil buildings
To The Question Of Producing Efficient Construction
Materials Based On Waste Of Agricultural Crops,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
To The Question Of Producing Efficient Construction Materials Based On Waste Of Agricultural Crops, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, A.T. Ilyasov
Journal of Tashkent Institute of Railway Engineers
One of the promising areas of agricultural waste use is its use as raw material for the pro-duction of efficient building materials for energy-saving technologies, which is especially im-portant for areas that have a waste of agriculture and are in short supply in easily accessible building materials. On the other hand, an important task of technical policy is now to increase the use of lightweight structures in order to reduce the mass of erected structures, reduce the cost of transport costs and the cost of installing structures. In this regard, the use of dry cotton stems (guzapai) in a specially …
Method Of Activation Of Cement Mixture Components By Ultrasonic Field,
2019
Military Technical Institute of the National Guard of the Republic of Uzbekistan, Tashkent, Uzbekistan
Method Of Activation Of Cement Mixture Components By Ultrasonic Field, U.A. Yokubov, O.V. Trunilina, V.N. Avdievich, S.Z. Mirzaev, S.E. Kurbanbaev
Journal of Tashkent Institute of Railway Engineers
The theoretical and experimental methods of increasing the efficiency of cement disperse systems by the action of a low-energy ultrasonic field are given in the article, as well as a technique providing highly efficient treatment of mixing water with a minimum energy expenditure
Mathematical Models Of Magnetic Chains Of Electron Electromagnetic Modifiers With Fluid Meter Measuring Fluid Surface,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
Mathematical Models Of Magnetic Chains Of Electron Electromagnetic Modifiers With Fluid Meter Measuring Fluid Surface, S.F. Amirov, A.O. Ataullaev, S.H. Jumabaev
Journal of Tashkent Institute of Railway Engineers
Mathematical models of magnetic circuits of electromagnetic flow transducers with an annular channel have been developed, taking into account the distribution of the parameters of the magnetic circuit and leakage fluxes closed through non-working air gaps. The possibility of compensating for the difference in magnetic resistance of coaxially arranged concentric ferromagnetic cores due to the difference in their circumference by selecting the thickness of the cores is shown.
Technique For Determining The Capacity Of A Container Terminal Equipped By Rubber Tyred Gantry,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
Technique For Determining The Capacity Of A Container Terminal Equipped By Rubber Tyred Gantry, Sh.R. Abduvahitov
Journal of Tashkent Institute of Railway Engineers
This article presents the advantages and disadvantages, as well as the technical characteristics of the rubber tyred gantry. He conducted a brief scientific analysis in the field of research of technical equipment of container terminals. A mathematical model of the parameters of relations of the crane, container and cargo terminal is proposed.
The Study Of Magnetic Circuits With Distributed Magnetizing Windings,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
The Study Of Magnetic Circuits With Distributed Magnetizing Windings, S.F. Amirov, K.K. Jurayeva, O.T. Boltayev
Journal of Tashkent Institute of Railway Engineers
By research of magnetic chains of new magnetoelastic sensors of efforts with the distributed magnetizing windings by method of drawing up the equivalent circuit it is shown that at rather large number of the cascade connected sites of a magnetic chain and accounting of distribution of the magnetizing forces of sections of a winding of excitement decrease in an error of calculation of magnetic chains with the distributed parameters is reached essential (to 23%). It is established that magnetic tension along a magnetic chain is distributed not linearly and changes the sign in a point of a magnetic neutral, and …
Rationing Of Departure Time Of Freight Cars From Stations And Optimization Of Delivery Periods,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
Rationing Of Departure Time Of Freight Cars From Stations And Optimization Of Delivery Periods, J.R. Qobulov, J.S. Barotov
Journal of Tashkent Institute of Railway Engineers
In this article to connect the wagons loaded to the trains shortening the staying time in process of their collection and recycling delivers freight wagons accelerates the selection and use of shunting equipment, sends wagons to the station at the right time. Is listed below in railway transport on delivery freight wagons, international and local wagons staying time the main quality indicators in station. As well as developed scheme of the algorithm for the timing of staying in the wagons at the station.
Developing Of Microelectronic Block Нсс,
2019
Tashkent Institute of Railway Engineers, Tashkent, 100167, Uzbekistan
Developing Of Microelectronic Block Нсс, A.R. Аzizov, E.K. Аmetova
Journal of Tashkent Institute of Railway Engineers
The issue of developing a microelectronic control block of paired arrows the HCC is discussed in the article. The analysis of the block circuit concept is carried out and it is determined which elements are to be replaced and on which microelectronic devices. Electric circuits are considered that provide automatic recruitment of a train route that contains four circuits. The analysis of the block operation in the circuit of push-button relays, which receive power from the block НСС, was carried out, the calculation of the assumed current strength showed the need to use an optical-relay type Pvg-612 in this circuit.
