Three Dimensional Soil-Structure-Interaction Analysis Of A Flood Wall Under Full-Scale Load Test,
2013
AMEC, Oakland, CA
Three Dimensional Soil-Structure-Interaction Analysis Of A Flood Wall Under Full-Scale Load Test, Jian Hu, Faiz Makdisi, Zhi-Liang Wang, Kent Hokens, Neil Schwanz
International Conference on Case Histories in Geotechnical Engineering
The U.S. Army Corps of Engineers (Louisville District) conducted a number of full-scale tests to determine the behavior of continuous steel sheet pile flood walls when subjected to hydrostatic loads simulating actual flood conditions. Among these tests, Test Series III (sheet piling with concrete jacket) was conducted at the Tell City site in Indiana. The results of these full-scale load tests provide valuable data that could help verify geotechnical design procedures. In addition, numerical analyses simulating these tests could be useful in interpreting the foundation and structure behavior and in predicting the performance of similar I-wall-type levee systems subjected to …
Ground Motion Amplification From Vertical Propagation Of Earthquake Waves,
2013
University of Colorado, Denver, CO
Ground Motion Amplification From Vertical Propagation Of Earthquake Waves, Nien-Yin Chang, Roger L. Torres
International Conference on Case Histories in Geotechnical Engineering
The paper is directed to follow a procedure where seismic responses are identified and recommendations to proceed with their applications are made quickly and economically, before engaging in a complex analysis. It is not intended for selecting design soil parameters or earthquake parameters for the final design of any specific dam. A selected earthquake accelerogram will produce response accelerations and strains that will cover a significant variety of accelerograms in terms of severity of earthquake damage to an earth dam. Scaling-up and scaling-down the selected outcrop motion broadens the spectrum of seismic response analyses using simple and effective SHAKE program …
Influenced Factor Of Site Information On The Environmental Ground,
2013
Ritsumeikan University, Japan
Influenced Factor Of Site Information On The Environmental Ground, Katsuya Tanaka, Kiyoshi Hayakawa, Shuuji Honda
International Conference on Case Histories in Geotechnical Engineering
The relationship between “Landform Geology Classification” factor of site information and environmental ground vibration caused by the public transportation in metropolitan was related, and considered.
Lateral Movements Of A Bridge Abutment Due To Compressible Foundation Soils,
2013
MERO, Ontario Ministry of Transportation, Canada
Lateral Movements Of A Bridge Abutment Due To Compressible Foundation Soils, Alper Turan, Tony Sangiuliano, M. Shahria Alam, M. Hesham El Naggar
International Conference on Case Histories in Geotechnical Engineering
Highway approach embankments are often constructed over weak and compressible soils. The consolidation settlements induced by the embankment loads are known to result in downdrag forces and lateral forces on the piles supporting the bridge abutments. Several approaches are commonly employed during construction of highway bridges in Ontario in order to reduce these forces. These approaches include: preloading and surcharging to achieve the anticipated settlements prior to the installation of abutment piles; application of lightweight fill materials such as expanded polystyrene and expanded pelletized blast furnace to reduce embankment loads; and measures to expedite pore water pressure dissipation such as …
The Consolidation Behavior Of The Clay-Core In A Rock Fill Dam — Atatürk Dam Case Study,
2013
Istanbul Technical University, Turkey
The Consolidation Behavior Of The Clay-Core In A Rock Fill Dam — Atatürk Dam Case Study, Atila Sezen, M. Atilla Ansal
International Conference on Case Histories in Geotechnical Engineering
Unexpectedly large settlements occurred in the 165 meter high clay core of Atatürk Dam during the reservoir filling stage. An investigation was conducted based on laboratory experiments and numerical analysis. Consolidation tests were performed on compacted samples under stress levels expected to take place in the field by considering the possible factors affecting the consolidation behavior. The experimental findings were used to model the observed settlements based on a parametric study and by back-calculation. The total expected settlements were determined to be in the order of 16.0 m. While a good fit was captured between the observed and modeled settlements …
Influence Of Dam And Foundation Discountinuities Using Discountinuum Approach — A Case Study,
2013
Gautam Buddha University, India
Influence Of Dam And Foundation Discountinuities Using Discountinuum Approach — A Case Study, Shilpa Pal, Dilip K. Paul
International Conference on Case Histories in Geotechnical Engineering
Dam-foundation interaction plays an important role in the design and analysis of concrete gravity dams as has been reviewed from the failures of dams in the literature. The objective of the study is to understand the behavior of a concrete gravity dam taking into account the effect of dam and foundation discontinuities using three-dimensional Distinct Element Code. Different models have been formulated considering the complexities involved in the modeling of the dam structure, dam-foundation system and the results have been compared. Modeling the dam with the discontinuity in the form of crack which runs through the concrete section has a …
Liquefaction Potential Evaluation: Energy-Based Method Compared To Stress-Based Method,
2013
Chuo University, Japan
Liquefaction Potential Evaluation: Energy-Based Method Compared To Stress-Based Method, Takaji Kokusho
International Conference on Case Histories in Geotechnical Engineering
A data set of undrained cyclic triaxial test with parametrically changing relative density and fines content is reviewed and interpreted in the scope of energy. It is found that the strain amplitude or pore-pressure buildup during cyclic loading is uniquely related to the energy dissipated in soil specimens. This further indicates that a RL (cyclic stress ratio)-Nc (number of cycles) line corresponding to specific soil strain represents a line of equal dissipated energy. An energy-based method (EBM) is proposed in which liquefaction potential can be evaluated by comparing the dissipated energy with upward seismic wave energy with no …
Study Of Seismic Wave Propagation In Anisotropic Magnetoelastic Structure With A Point Source,
2013
Indian School of Mines, India
Study Of Seismic Wave Propagation In Anisotropic Magnetoelastic Structure With A Point Source, Amares Chattopadhyay, Sanjeev A. Sahu
International Conference on Case Histories in Geotechnical Engineering
We aim to study the effect of point source on the propagation of horizontally polarised shear wave in a magnetoelastic self-reinforced layer lying over a heterogeneous self-reinforced half-space. The heterogeneity in the half-space has been considered due to quadratic variation in rigidity. Using the Green’s function method based on algebraic transformations, we have obtained the relation showing the dependence of phase velocity of the shear wave. The solution part of the problem involves the perturbation approach. The dispersion curves have been obtained for different values of magnetoelastic and inhomogeneity parameters. It is observed that the dispersion equation is in assertion …
L'Aquila Seismic Event On 6th April 2009: Site Effects And Critical Points In Microzonation Activity Within The Aterno Valley Municipalities,
2013
University “G. d’Annunzio”, Italy
L'Aquila Seismic Event On 6th April 2009: Site Effects And Critical Points In Microzonation Activity Within The Aterno Valley Municipalities, Mario Luigi Rainone, Patrizio Signanini, Giovanna Vessia, Pasquale Greco, Sara Di Benedetto
International Conference on Case Histories in Geotechnical Engineering
L’Aquila earthquake was a complex seismic event characterized by its main shock on 6th April 2009 with magnitude Mw=6.3 and many foreshocks and aftershocks that stroke the whole Aterno River Valley from November 2008 up to September 2009. The huge amount of strong-motion records collected by permanent and temporary stations placed in the valley show a heterogeneous seismic hazard scenario related to different damage levels. With respect to the seismological features of the records within the “crater” (that is the portion of the Aterno Valley which suffered the strongest struck), they show “near field” and “near source” characters although the …
Bridge Foundation Pile Driving Vibration Monitoring,
2013
California State University/ ACI/ Caltrop, Inc., Long Beach, CA
Bridge Foundation Pile Driving Vibration Monitoring, Kumars Zand-Parsa, Kamran Zand-Parsa
International Conference on Case Histories in Geotechnical Engineering
In southern California a big bridge was under construction in urban area. Based on the size and depth of the steel and concrete piles some of the residential buildings within the 200ft distance from the center of the different footings (there were six footings sitting on steel pipe piles) were selected and vibration monitoring devices installed in their back yard. Some of the owners complained during the excavation process for a big channel behind their back yard before starting any pile driving operations. Three of those residential owners informed the authorities during the bottom of that big channel compaction operation …
Banda Aceh-Indonesia Ground Response Analysis During The 2004 Indian Ocean Mega Earthquake,
2013
Syiah Kuala University, Indonesia
Banda Aceh-Indonesia Ground Response Analysis During The 2004 Indian Ocean Mega Earthquake, Bambang Setiawan, Wahyu Budi Kusuma
International Conference on Case Histories in Geotechnical Engineering
The site response effect i.e. soil amplification has caused major structure damages founded on thick soft soils. Banda Aceh, Indonesia is underlain by approximately 70m to 206m thick alluvium. Thus, site-specific ground response analysis of Banda Aceh is necessary to be warranted. Due to the absence of strong motion records during the 2004 Indian Ocean mega earthquake duplication of synthetic strong motions are used in this study. Subsequently, ground response analysis was carried out by using computer programs of NERA. The results of the site-specific ground response studies expose the real Banda Aceh’s soil response during the 2004 Sumatran mega …
A 2-Dimentional Approach For Numerical Modeling Of Seismic Gravel Drains In Liquefiable Grounds,
2013
Golder Associates Ltd., Canada
A 2-Dimentional Approach For Numerical Modeling Of Seismic Gravel Drains In Liquefiable Grounds, Mahmood Seid-Karbasi, Roberto Olivera, Upul Atukorala
International Conference on Case Histories in Geotechnical Engineering
Liquefaction of water saturated granular soils is one of the major risks thai affect the safety and earthquake pcrfonnancc of infraSlmC\urc such as bridges, dams, ports, and lifelines in various parts of Ihe world. The seismically-induced ground deformations arc often Ihe main concern when liquCr:1cl ion occurs in significant zones of an earth Sinlcturc or soil foundat ion. Recent studies ineluding field data, centrifuge model testing and numerical investigations suggest that one of the promising measures 10 alleviate large earthqu.ake-induced deformat ions and ground failures is by installing stone columns and/or gravel drains. Design of such treatment scheme needs to …
Bank Instability Problems Associated With The Riverside Construction,
2013
Marino Engineering Associates, Inc., Urbana, IL
Bank Instability Problems Associated With The Riverside Construction, Gennaro G. Marino, Abdolreza Osouli
International Conference on Case Histories in Geotechnical Engineering
In this case study, the sliding of a riverbank during construction of a water intake facility in Tennessee was investigated and analyzed. The construction of the project involved the installation of 2-36 in. diameter intake pipes from the wet well to the river inlet which were 290 ft apart. An open cut excavation from the river inlet to the riverbank toe was used to connect the inlet to the tunnel-installedintake pipes on the land side. During the excavation, a 25 ft wide slide, which 4 months later widened by another 15 ft, developed to the crest of the road on …
Determination Of Mse Wall Pseudo Static Coefficient Based On Seismic Performance,
2013
Tarbiat Modares University, Iran
Determination Of Mse Wall Pseudo Static Coefficient Based On Seismic Performance, Ali Komak Panah, Majid Yazdandoust, Reza Sadeghzadegan
International Conference on Case Histories in Geotechnical Engineering
This study, tries to suggest a design method based on displacement using finite difference numerical modeling in reinforcing soil retaining wall. In this case, loading characteristics, such as magnitude, frequency, peak ground acceleration and geometrical characteristics of reinforced soil structure are considered to correct the pseudo static method and finally introduce the pseudo static coefficient as a function of seismic performance level and peak ground acceleration. In addition, the authors has tried to simply suggest the equivalent harmonic loading of selected acceleration records. Considering the loading parameters, mechanically stabilized earth wall parameters and type of the site showed that the …
Effects Of Silt Content On Dynamic Properties Of Solani Sand,
2013
IIT Roorkee, India
Effects Of Silt Content On Dynamic Properties Of Solani Sand, Bablu Kirar, B. K. Maheshwari
International Conference on Case Histories in Geotechnical Engineering
In the present article, the results of cyclic triaxial tests conducted on Solani sand, collected from the bed of Solani River near Roorkee, are presented. Results of strain controlled undrained tests carried out as per ASTM D3999 for determinations of dynamic soil properties are presented. The variations of shear modulus with shear strain are reported. Remoulded samples were prepared with different percentage of silt contents and tested. The effects of silt content on shear modulus of Solani sand at different shear strain are evaluated. This effect is studied at two relative densities. It was found that the effect of silt …
Estimation Of Site Effects In The Iranian Plateau Using The Quarter-Wavelength Method,
2013
University of Kharazmi, Iran
Estimation Of Site Effects In The Iranian Plateau Using The Quarter-Wavelength Method, Mohammad Ebrahim Fakhimnia, Hamid Zafarani, Shima Shams Rad
International Conference on Case Histories in Geotechnical Engineering
The characteristics of strong ground motion at a given site depend upon the source mechanism, the transmission path together with the geological characteristics of source to the site, and the local soil conditions at the site, mostly known in the engineering and seismological literature as site effects. In the context of the stochastic simulation methods (e.g. Boore 1983), site effects play a significant rule in ground-motion studies. The objective of this paper is the assessment of site effects (both crustal amplification and near surface attenuation) in the Iran plateau. The effects in different parts of Iran were estimated based on …
Experimental Investigation Into Natural Base Isolation System For Earthquake Protection,
2013
IIT Kharagpur, India
Experimental Investigation Into Natural Base Isolation System For Earthquake Protection, Srijit Bandyopadhyay, Aniruddha Sengupta, G. R. Reddy
International Conference on Case Histories in Geotechnical Engineering
This paper presents the results of experimental investigations into the performance of a well-designed layer of sand, and layer of sand mixed with shredded tire (rubber) as low cost base isolators. The building foundation is modeled by a 200 mm by 200 mm and 40 mm thick rigid plexi-glass block. The model footing is placed in the middle of a 1m by 1m tank filled with sand. The selected base isolator is placed between the footing and the sand foundation. The whole setup is mounted on the shake table and subjected to sinusoidal motion with varying amplitude and frequency. Acceleration …
Ground Deformations Observed After 23.10.2011 MW 7.2 Van Earthquake (Turkey),
2013
Yuzuncu Yil University, Turkey
Ground Deformations Observed After 23.10.2011 MW 7.2 Van Earthquake (Turkey), Mutluhan Akin, Ali Ozvan, Muge K. Akin, Tamer Topal
International Conference on Case Histories in Geotechnical Engineering
A destructive earthquake with a moment magnitude of 7.2 occurred in the north of the Van province (Turkey) on 23rd October 2011 at 13:41 local time and caused approximately 600 deaths and more than 4000 injuries. Many damaging aftershocks were recorded for more than a month after the main shock including a triggered earthquake (Mw 5.6) located in the southern district of Van, namely Edremit, on November 9th, 2011 which caused additional damage and casualties. After the Mw 7.2 Van earthquake, earthquake-induced ground deformations such as liquefaction and lateral spreading were extensively observed around the shores of Lake …
An Investigation On The Stack Vibrations And Geotechnical Rehabilitation Solutions Case-Study: Khangiran Gas Refinery,
2013
Khangiran Gas Refinery, Iran
An Investigation On The Stack Vibrations And Geotechnical Rehabilitation Solutions Case-Study: Khangiran Gas Refinery, Hadi Ghodrat, Abolfazl Yazdinejad, Javad Hosseini Masum, Mehdi Barjini Khabbaz, Arsalan Ghahramani
International Conference on Case Histories in Geotechnical Engineering
The 75 (m) high stacks of the sulfur recovery units of Khangiran Gas Refinery in Iran exhibited significant levels of vibration in winds. Field observations reported that vibration occurred in the stacks 9 times during reel years. The longest vibration duration is 8 hours and maximum tip deflection is 1 (m). In most intensive vibration occurrence much amount of water exits from around of foundation and some crack is created in the structure. Stack diameter is 4.57 (m) at the bottom and 3.43 (m) at the top and its total weight is 182.3 (Ton). The octagonal foundation diameter is 14 …
Ground Improvement For The Smithland Hydroelectric Project,
2013
MWH Americas, Inc., Chicago, IL
Ground Improvement For The Smithland Hydroelectric Project, Thomas Andrews, Lin Zhao, Luling Yang, Abid Mirza
International Conference on Case Histories in Geotechnical Engineering
American Municipal Power is developing the Smithland Hydroelectric Project adjacent to the U.S. Army Corps of Engineers’ existing Smithland Locks and Dam on the Ohio River. The site geology is characterized by over 100 feet of variable alluvial deposits overlying karstic limestone. The investigation program revealed loose to medium dense sands and sandy gravels along with some interbedded clay. Large voids were encountered in rock and ground loss into solution features was believed to have created ‘chimneys’ of loosened soil. A project-specific seismic hazard evaluation determined that the maximum credible earthquake (MCE) is a 7.5M event associated with the New …
