Civil and Environmental Engineering Commons^™

Piling-Induced Ground Motion: A Case Study Involving Hydrocarbon Exploitation Activities In The Niger Delta, Samuel U. Ejezie

International Conference on Case Histories in Geotechnical Engineering

The damage potential of piling-induced vibrations in the humid tropical soils of southeastern Nigeria has been evaluated. The vibration propagation was characterized by a fairly high attenuation coefficient, as evidenced by a rapid decrease of velocity amplitude with distance from source. It was also observed that the bulk of the peak velocity amplitudes measured or calculated fell within the safe limit for structural safety and human tolerance. This therefore implied that the zone of highest damage probability at the case study site did not extend across property line as suspected prior to commencement of piling. In general, the findings and …

Failure Investigation Of A Fill Slope In Putrajaya, Malaysia, A. N. Hussein, A. H. Mustapha

International Conference on Case Histories in Geotechnical Engineering

On 6th of January 2001, a fill slope collapsed in Putrajaya, Malaysia. The failed slope was 25m in height. The failure caused the slope to pushed two reinforced earth walls and the recently completed jetty and boat docking facilities to collapse. The depth of the failure scar was about 2m with a failure length of about 50m. A failure investigation was then carried out to determine the causes of failure. A total of thirteen new boreholes, fifteen Mackintosh probes and three hand augers were carried out to determine the soil profile. A desk study of existing information and records, site …

Construction Of Diaphragm Wall Support Underground Car Park In Historical Area Of Bangkok, Narong Thasnanipan, Zaw Zaw Aye, Chanchai Submaneewong

International Conference on Case Histories in Geotechnical Engineering

Geotechnical aspects in construction of diaphragm-wall-support 2 level underground car park building, located in the historically and culturally significant area of Bangkok is presented in this paper. Results of the preliminary analyses showed that the deflection of the thin diaphragm wall of 0.60 m width would be large if it was to be fully cantilevered to fulfill the architectural and utility aspects of the car park structure. It was therefore decided to use buttress to minimize the diaphragm wall deflection. Performance of buttressed-support diaphragm wall is demonstrated based on the inclinometer monitoring results. Intensive modification of construction sequence in actual …

Railway Tunnelling In Frozen Ground On Bothniabana, S. Saarelainen, L. Korkiala-Tanttu, J. Viitala

International Conference on Case Histories in Geotechnical Engineering

A new railway line was under construction in North-eastern Sweden, along the shoreline of the Gulf of Bothnia. The terrain consisted of Postglacial clay and silt valleys, and ridges of Precambrian bedrock, crossing the railway line. The railway level was about 20m below the ground surface. For the design of freezing, a freezing analysis was carried out to determine the pipeline depths and distances, to estimate the necessary time for freezing and to determine temperatures within the frozen zone. To estimate the deformations, displacements and safety level, a mechanical analysis of the tunnel cross-section was carried out. As input, the …

Geotechnical Investigation And Rock Characterization For The East Side Access Project’S Manhattan Segment, Subal Sarkar, Amitabha Mukherjee, Aomar Benslimane, Carroll Stewart

International Conference on Case Histories in Geotechnical Engineering

The East Side Access Project to connect the Long Island Railroad to New York’s Grand Central Terminal on the east side of Manhattan will be one of the largest tunneling projects ever undertaken in New York. A series of tunnels and caverns will be excavated in rock to connect the existing 63rd Street tunnels to twin three-level caverns beneath Grand Central Terminal. The site investigation for the Manhattan Segment comprised archive searches, rock exposure mapping, geophysical surveys, test borings in soil and rock, in-situ testing, groundwater monitoring, and laboratory testing of soil, water and rock. Approximately 200 borings have been …

Effects Of Liquefaction On The Numerical Analysis Of A Single Pile-Soil Interaction During Earthquakes, Fusao Oka, Lu Chih-Wei, Zhang Feng

International Conference on Case Histories in Geotechnical Engineering

Dynamic behavior of pile-foundations during earthquakes is important for the performance of many foundations. To clarify the mechanism of the soil-pile interaction, we have conducted a series of numerical analysis of a single pile foundation in the different types of a two-layer ground. Upper layer of the ground is composed of dense sand, reclaimed soils, medium dense sand or loose sand, and the lower layer of the ground is composed of clayey soils. In the liquefaction analysis, we have used a fully coupled effective stress analysis method with the cyclic elasto-plastic and elasto-viscoplastic constitutive models for sandy soils and clays. …

Crosshole Sonic Logging Integrity Testing For The New Cooper River Bridge, Edward L. Hajduk, Marvin R. Tallent, Donovan L. Ledford, William R. Christopher

International Conference on Case Histories in Geotechnical Engineering

A new cable-stayed bridge for US Highway 17 is currently under construction over the Cooper River between Mount Pleasant and Charleston, South Carolina. This new bridge will replace two existing structures, the Silas Pearlman and the Grace Memorial Bridges. When completed, the new bridge will have a 1,546 feet span over the Cooper River, making this bridge the longest cable-stayed span in North America. The foundations for this replacement bridge are drilled shafts embedded within the Cooper Marl formation, which underlies the near surface lower coastal plain soil deposits. Depending on the location within the bridge structure, the drilled shafts …

A Half Century Of Tapered-Pile Usage At The John F. Kennedy International Airport, John S. Horvath, Thomas Trochalides

International Conference on Case Histories in Geotechnical Engineering

Tapered driven piles have been the deep foundation of choice ever since construction of and at the well-known John F. Kennedy International Airport (JFKIA) in New York City began in the late 1940s. Timber piles were used primarily for many decades but various brands of closed-end steel pipe piles have become preferred in recent years as engineers have sought ever-increasing allowable axial-compressive loads per pile. With currently available pile types it is now possible to routinely install tapered piles that have an allowable axial-compressive service-load capacity per pile in excess of 400 kips (1780 kN), with net ultimate axial-compressive geotechnical …

Prelimary Geotechnical Engineering Observations Of The Tecomán, Mexico Earthquake Of January 21, 2003, Joseph Wartman, Adrian Rodriguez-Marek, David Keefer, Scott Deaton, Pedro Repetto, Emir Jose Macari

International Conference on Case Histories in Geotechnical Engineering

The 21 January 2003 M_w 7.6 Tecomán, Mexico Earthquake caused significant damage to the coastal region of the state of Colima, Mexico. This paper presents an overview of observations made by the United States National Science Foundation (NSF)-sponsored geotechnical engineering reconnaissance team, which visited the affected region one week following the earthquake. The team visited and documented sites including major cities, industrial facilities, and transportation routes. There were a number of important geotechnical engineering features of the earthquake. Liquefaction and consequent strength loss, ground settlement, and lateral spreading, alone or in combination, damaged the Port of Manzanillo, the capital …

Past Proceedings: 1st International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Cm Facilities Update, Construction Management Department

Construction Management

No abstract provided.

Fatigue Of Drill Pipes Used In Horizontal Directional Drilling, Feibai Ma

Doctoral Dissertations

Fatigue is the most common cause of mini-HDD drill rod failure. It can occur at stress levels far below the normal operating stress in most drill stem components. Fatigue failures occur because the drill rod, after it has been forced into a curved path, undergoes a cyclic bending stress oscillating from tension to compression in concert with the other stress components caused by torque, thrust, or pullback.

When a rod breaks underground, there is considerable extra cost caused by the delay in “fishing” out the broken rod as well as the cost of replacing the rod. On the other hand, …

Source Identification Of Ammonia Inputs To The Wastewater Treatment Holding Pond At International Paper Franklin Mill, Melissa Riddick Wolford

Civil & Environmental Engineering Theses & Dissertations

While nitrogen is an essential nutrient in aquatic systems, elevated levels of nitrogen can be fatal to many aquatic organisms including fish and other organisms that are in the river. Elevated levels of ammonia have been recently (2001-2002) detected in the water released from a wastewater treatment system holding pond at International Paper Franklin, Virginia and are a concern for the receiving system. The elevated ammonia concentrations observed in previous years were not observed in 2003, due likely to increased precipitation and the occurrence of a major hurricane (Hurricane Isabel) during the sampling period that may have influenced the observations. …

Extension Of A Cross-Shore Beach Profile Model For Coarse Materials And Steep Slopes, Kentaro Hayashi

Civil & Environmental Engineering Theses & Dissertations

In the present SBEACH model, the effective grain size can range from 0.13 to 1.0 mm. The grain size greatly influences three main processes of the model: fall velocity, sediment transport direction, and sediment transport rate. First, the theory of the fall velocity, which is called Hallermeier's formula in the SPM (1984), is replaced by the new theory in the CEM (2002). Second, the sediment transport direction is changed by two criteria. One was developed by Sunamura and Horikawa (1974). This theory includes the beach slope. The other was derived by Ahrens and Hands (2000). The effective grain size range …

Parallel Decomposition Procedures For Large-Scale Linear Programming Problems, Yusong Hu

Civil & Environmental Engineering Theses & Dissertations

In practice, many large-scale linear programming problems are too large to be solved effectively due to the computer's speed and/or memory limitation, even though today's computers have many more capabilities than before. Algorithms are exploited to solve such large linear programming problems, either in the sequential or parallel computation environment. This study focuses on two parallel algorithms for solving large-scale linear programming problems efficiently.

The first parallel decomposition algorithm discussed in this study is from the theory problems in a special block-angular structure. The theory or the decomposition principle is first examined. Since the subproblems of a linear programming problem …

End Zone Reinforcement For Pretensioned Concrete Girders, Christopher Y. Tuan, Sherif A. Yehia, Nipon Jongpitaksseel, Maher K. Tadros

Civil Engineering Faculty Publications

In this study, a literature review was conducted to establish the background of current specifications and to evaluate the applicability of various theories and methods for design of end zone reinforcement. Analytical methods reviewed in this paper include finite element analysis, strut-and-tie modeling, and the Gergely-Sozen equivalent beam method. Previous experimental work combined with work conducted as part of this study was used to correlate between various theoretical and experimental results. This paper illustrates that no single theoretical method adequately represents the complex behavior at the end of a pretensioned concrete member. A general semi-empirical design procedure is proposed here. …

Tl-5 Development Of 42 And 51-Inch Tall Single-Faced, F-Shape Concrete Barriers, Ronald K. Faller, Dean L. Sicking, Jordan Larsen, Robert W. Bielenberg M.S.C.E., E.I.T., John R. Rohde, Karla A. Polivka

Nebraska Department of Transportation: Research Reports

No abstract provided.

Application Of Freeway Video Surveillance For Accident Investigation, Aemal Khattak, Yu Liu, Geza Pesti

Nebraska Department of Transportation: Research Reports

This report presents information on Research Project Number Z820 (UNL Ref. No. 26-1118- 0057-001) titled “Application of Freeway Video Surveillance for Accident Investigation.” Traffic accident investigation requires detailed documentation of the accident scene, vehicles, and persons involved in the collision. To adequately document an accident scene, investigating officers accurately record various measurements (e.g., skid marks, dimensions of different highway geometric elements, etc.). Typically, a measuring tape and/or a total station (theodolite) are used to obtain the needed measurements. Advances in digital imaging and computer technology make it possible to develop cost-effective traffic accident investigation system alternatives that provide sufficient accuracy, …

Analysis Of Kancil's Car Knuckle Prototype, Tresna P. Soemardi, Aida Mahmudah

Makara Journal of Technology

Analysis of Kancil’s Knuckle Prototype. The objective of this work is to execute strength analysis of knuckle, which is made from FCD 50, by using static analysis on maximum loading. This maximum loading is obtained from front axle loading calculation on particular operating condition. That is, vehicle is braking while cornering in down hill. From previous vehicle loading calculation, we get a number of loading values on different speed and deceleration. At the end, we get a value of speed and deceleration that guarantee the vehicle safety if it is braking while cornering in down hill. As comparison, loading calculation …

Pid Fuzzy Logic Controller System For Dc Motor Speed Control, H. Samsul Bachri M.

Makara Journal of Technology

PID Fuzzy Logic Controller System for DC Motor Speed Control. A good controller system must have resilience to disturbance and must be able to response quickly and accurately. Problem usually appears when PID controller system was built sensitively hence the system’s respon to the disturbance will yield big overshot/undershot then the possibility of oscillation to be happened is excelsior. When the controller system was built insensitively, the overshot/undershot will be small but the recovery time will be longer. Hybrid controller system could overcome those problems by combining PID control system with fuzzy logic. The main control of this system is …

Bs News

Building Services Engineering

No abstract provided.

Willamette River Basin Temperature Tmdl Model: Model Scenarios, Robert Leslie Annear, Michael Lee Mckillip, Sher Jamal Khan, Chris Berger, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

The State of Oregon Department of Environmental Quality (DEQ) is developing a TMDL for temperature in the Willamette River basin shown in Figure 1. The study area included the Willamette River and all major tributaries (except the Tualatin River where a TMDL process was already concluded). A large section of the Columbia River was also modeled to provide adequate boundary representation of tidal flows in the lower Willamette River. The Willamette River below the Oregon City Falls in the Portland metropolitan area has a typical diurnal tidal range of 1 m. The development of a dynamic model of temperature and …

Quarternair Cugasete And Cuga0.5in 0.5te2 Thin Films Fabrication Using Flash Evaporation, A. Harsono Soepardjo

Makara Journal of Technology

Quarternair CuGaSeTe and CuGa0.5In 0.5Te2 Thin Films Fabrication Using Flash Evaporation. Quarternair materials CuGaSeTe and CuGa0.5In 0.5Te2 are the basic materials to solar cell fabrication. These materials have high absorption coefficients around 103 – 105 cm-1 and band gap energy in the range of 1-5 eV. In this research, the films were made by flash evaporation method using quarternair powder materials of CuGaSeTe and CuGa0.5In 0.5Te2 to adhere in a glass substrate. After the films were obtained, the properties of these films will be characterized optically and electrically. The lattice parameter of the films and the crystalline film structure were …

Graded Channel Mosfet Simulation With S-Pisces 2b, Hartono Siswono

Makara Journal of Technology

Graded Channel MOSFET simulation with S-Pisces 2B. Graded-Channel Metal-Oxide-Semiconductor Field-effect- Transistor or GCMOSFET is being discussed in this paper. GCMOSFET technology has been developed to meet the growing demand for low power and high performance application. In this paper, it will be shown that, compared to ungraded MOSFET, the GCMOSFET device offers the advantage of significantly higher drive current. The higher drive current is achieved because the effecctive channel length of GCMOSFET is shorter than the ungraded MOSFET’s. From the simulation result with S-PISCES 2B and MATLAB, it can been shown that the ID from GCMOSFET is higher than the …

Construction Of Depth-Structure Shelf-Edge Map For Case Study Of Kujung Formation, East Java Sea, Saifatur Rusli, Suparto Suparto

Makara Journal of Technology

Construction of Depth-Structure Shelf-edge Map for Case Study of Kujung Formation, East Java Sea. In general, reflection seismic method has capability to represent sub-surface in time domain. Seismic cross-section that depicts the formation of sub-surface usually use time domain in the format of TWT (Two Way Times). This due to in the process of seismic data acquisition, seismic wave propagates in down-going and up-going manner so that the obtained results from data processing are in the format of TWT seismic vs. shot points. This paper will describe the construction of depth-structure map for case study of Kujung Formation, East Java …

Structural Health Monitoring And Damage Detection Using An Intelligent Parameter Varying (Ipv) Technique, Soheil Saadat, Mohammad N. Noori, Gregory D. Buckner, Tadatoshi Furukawa, Yoshiyuki Suzuki

Office of the Dean (CENG) Scholarship

Most structural health monitoring and damage detection strategies utilize dynamic response information to identify the existence, location, and magnitude of damage. Traditional model-based techniques seek to identify parametric changes in a linear dynamic model, while non-model-based techniques focus on changes in the temporal and frequency characteristics of the system response. Because restoring forces in base-excited structures can exhibit highly non-linear characteristics, non-linear model-based approaches may be better suited for reliable health monitoring and damage detection. This paper presents the application of a novel intelligent parameter varying (IPV) modeling and system identification technique, developed by the authors, to detect damage in …

The Contextable: Building And Testing An Intelligent, Context-Aware Kitchen Table, Daniel Matthew Hoopes

Theses and Dissertations

The purpose of this thesis was to design and evaluate The ContexTable, a context-aware system built into a kitchen table. After establishing the current status of the field of context-aware systems and the hurdles and problems being faced, a functioning prototype system was designed and built. The prototype makes it possible to explore established, untested theory and novel solutions to problems faced in the field.

Floodplain Risk Analysis Using Flood Probability And Annual Exceedance Probability Maps, Christopher M. Smemoe

Theses and Dissertations

This research presents two approaches to determining the effects of natural variability and model uncertainty on the extents of computed floodplain boundaries. The first approach represents the floodplain boundary as a spatial map of flood probabilities -- with values between 0 and 100%. Instead of representing the floodplain boundary at a certain recurrence interval as a single line, this approach creates a spatial map that shows the probability of flooding at each point in the floodplain. This flood probability map is a useful tool for visualizing the uncertainty of a floodplain boundary. However, engineers are still required to determine a …

Full-Scale Lateral-Load Tests Of A 3x5 Pile Group In Soft Clays And Silts, Jeffrey L. Snyder

Theses and Dissertations

A series of static lateral load tests were conducted on a group of fifteen piles arranged in a 3x5 pattern. The piles were placed at a center-to-center spacing of 3.92 pile diameters. A single isolated pile was also tested for comparison to the group response. The subsurface profile consisted of cohesive layers of soft to medium consistency underlain by interbedded layers of sands and fine-grained soils. The piles were instrumented to measure pile-head deflection, rotation, and load, as well as strain versus pile depth.

Influence Of Consolidation And Interweaving On Compression Behavior Of Isotruss™ Structures, Steven Matthew Hansen

Theses and Dissertations

Composite IsoTruss™ structures incorporate intersecting longitudinal and helical members. At the intersections, the fiber tows can be interwoven to achieve mechanical interlocking for increased joint integrity. Interlocking introduces gaps and curvilinear fiber paths similar to the crossovers in filament-wound structures, potentially facilitating local delamination within the members, thus reducing the strength and/or damage tolerance of the structure. Optimizing the interlocking pattern at the joints along with efficient consolidation minimizes these effects.

Joint specimens were fabricated using a specially designed machine. Specific tow intersection patterns at the joint were: 1) Completely encapsulating the longitudinal member with the tows of the helical …