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Full-Text Articles in Geotechnical Engineering
Shaking Table Test Study On The Influence Of Seismic History On Liquefaction Resistance Of Soils At Different Depths, Xiao-Lei Wang, Li-Teng Liu, Run Liu, Li-Bo Liu, Lin Dong, Hai Ren
Shaking Table Test Study On The Influence Of Seismic History On Liquefaction Resistance Of Soils At Different Depths, Xiao-Lei Wang, Li-Teng Liu, Run Liu, Li-Bo Liu, Lin Dong, Hai Ren
Rock and Soil Mechanics
Earthquake-induced liquefaction can cause significant damage to geotechnical structures, and the aftershocks accompanying the earthquakes may cause the sandy soils to liquefy again. To investigate the effect of free-field subsurface seismic history on the liquefaction resistance of saturated sandy soils at various depths, a series of shaking table tests was designed and conducted. Four shaking events with different accelerations, subdivided into seven smaller events, were input to the sandy soil in the tests. The excess pore pressure ratio, acceleration response, and soil settlement were calculated and compared for each vibration event to investigate the variation laws of soil liquefaction resistance …
Mechanism Of Liquefaction-Induced Lateral Spreading In Liquefiable Inclined Sites, Ke-Min Jia, Cheng-Shun Xu, Xiu-Li Du, Xiao-Ling Zhang, Jia Song, Zhuo-Lin Su
Mechanism Of Liquefaction-Induced Lateral Spreading In Liquefiable Inclined Sites, Ke-Min Jia, Cheng-Shun Xu, Xiu-Li Du, Xiao-Ling Zhang, Jia Song, Zhuo-Lin Su
Rock and Soil Mechanics
A numerical model of the liquefaction horizontal free-field shaking table test was developed based on the completed large-scale shaking table test of liquefaction horizontal free field using the OpenSees finite element platform, and the numerical model was verified. Based on this, a free-field numerical model of the overall inclined foundation was established, and the non-cyclic dynamic response of the liquefaction lateral spreading site and the mechanism of liquefaction-induced lateral spreading were discussed. The results show that the established numerical model can effectively simulate the seismic response in liquefiable sites. There was significant relative displacement at the interface between liquefiable loose …
Seismic Response And Failure Characteristics Of Granite Slope Using Large-Scale Shaking Table Test, Ze-Hua Zhou, Yan L, Sheng-Rui Su, Yu-Heng Diao, Zuo-Peng Wang, Jian-Kun Wang, Hui Zhao
Seismic Response And Failure Characteristics Of Granite Slope Using Large-Scale Shaking Table Test, Ze-Hua Zhou, Yan L, Sheng-Rui Su, Yu-Heng Diao, Zuo-Peng Wang, Jian-Kun Wang, Hui Zhao
Rock and Soil Mechanics
No abstract provided.
Research On Dynamic Response Characteristics Of Loess Tableland Slopes Based On Shaking Table Test, Fu-Xiu Li, Zhi-Jian Wu, Wu-Jian Yan, Duo-Yin Zhao
Research On Dynamic Response Characteristics Of Loess Tableland Slopes Based On Shaking Table Test, Fu-Xiu Li, Zhi-Jian Wu, Wu-Jian Yan, Duo-Yin Zhao
Rock and Soil Mechanics
Based on the typical loess plateau slope of Kongtong district, Pingliang city, a 1:25 large-scale shaking table test is designed and accomplished using the conceptual model of the slopes with or without cracks. On the premise of satisfying the similarity principle, the dynamic response characteristics of model slopes of two kinds of structures are analyzed by inputting seismic waves in horizontal direction and vertical direction with different amplitudes. Results show that the horizontal and vertical seismic waves have obvious nonlinear amplification along the slope surface and the internal vertical direction, which reach the maximum value at the top of the …
Study On Solid-Liquid Phase Transition Characteristics Of Saturated Sand Based On Large Shaking Table Test On Free Field, Cheng-Shun Xu, Peng-Fei Dou, Xiu-Li Du, Su Chen, Jun-Yan Han
Study On Solid-Liquid Phase Transition Characteristics Of Saturated Sand Based On Large Shaking Table Test On Free Field, Cheng-Shun Xu, Peng-Fei Dou, Xiu-Li Du, Su Chen, Jun-Yan Han
Rock and Soil Mechanics
Based on the large shaking table test of saturated sand on the free field, the dynamic shear stress–strain response of the foundation soil model was obtained by using the linear interpolation method according to the data from accelerometer arrays. At the same time, the concepts of apparent viscosity and zero shear viscosity of non-Newtonian fluid based on the assumption of hydrodynamic theory were introduced to study the characteristics and behaviors of shear thinning after site liquefaction. The characteristics of solid-liquid phase transition of saturated sand under seismic load were studied. Results showed that when the saturated sand was stimulated by …
Dynamic Response Of Pile Foundation Under Pile-Soil-Fault Coupling Effect In Meizoseismal Area, Jing-Bin He, Zhong-Ju Feng, Yun-Xiu Dong, Hai-Bo Hu, Chuang Liu, Sui-Zhu Guo, Cong Zhang, Min Wu, Zhen Wang
Dynamic Response Of Pile Foundation Under Pile-Soil-Fault Coupling Effect In Meizoseismal Area, Jing-Bin He, Zhong-Ju Feng, Yun-Xiu Dong, Hai-Bo Hu, Chuang Liu, Sui-Zhu Guo, Cong Zhang, Min Wu, Zhen Wang
Rock and Soil Mechanics
In order to study the dynamic response characteristics of pile foundation under the pile-soil-fault coupling effect, four different types of seismic waves with the peak acceleration of 0.35g are selected for shaking table test. The acceleration response, relative displacement of pile top, bending moment of pile body and damage of pile foundation under different types of seismic waves are studied. The test results show that the parameters of the pile in hanging wall are obviously larger than those in the footwall of the fault, showing the hanging wall effect. The peak acceleration of pile top is greater than that of …
Seismic Response Of Pile-Soil-Structure In Coral Sand Foundation Under Different Earthquake Intensities, Qi Wu, Xuan-Ming Ding, Zhi-Xiong Chen, Yu-Min Chen, Yu Peng
Seismic Response Of Pile-Soil-Structure In Coral Sand Foundation Under Different Earthquake Intensities, Qi Wu, Xuan-Ming Ding, Zhi-Xiong Chen, Yu-Min Chen, Yu Peng
Rock and Soil Mechanics
The dynamic field response to earthquake in the coral sand is affected by its special engineering properties. In order to reveal the seismic response characteristics of the pile-soil-superstructure in the coral sand site, the shaking table tests of pile groups with three-storey frame structure in coral sand under different earthquake intensities are carried out. The dynamic responses to soil and structure are analyzed and compared with those in the liquefied quartz sand of Fujian. The results show that the excess pore water pressure ratios in both coral and quartz sands are far less than 1 under 0.1g seismic intensity, demonstrating …
Shaking Table Model Test On Seismic Responses Of Utility Tunnel With Joint, Li Feng, Xuan-Ming Ding, Cheng-Long Wang, Zhi-Xiong Chen
Shaking Table Model Test On Seismic Responses Of Utility Tunnel With Joint, Li Feng, Xuan-Ming Ding, Cheng-Long Wang, Zhi-Xiong Chen
Rock and Soil Mechanics
Deformation joints are universal in underground utility tunnels that belong to the shallow-buried and slender structure. Under seismic loads, the vibration response of the underground structure with a joint will be affected to a great extent. However, the studies on this problem are limited. In this paper, based on the shaking table model test that considers the influence of joints, the seismic response characteristics of the underground utility tunnel under seismic excitation with different waveforms and different peak accelerations were studied. The acceleration, soil pressure, displacement, strain, and bending moment were measured and analysed. The results indicated that the vibration …
Experimental Investigation On The Dynamic Response Of Pile Group Foundation On Liquefiable Ground Subjected To Horizontal And Vertical Earthquake Excitations, Heng-Yuan Zhang, De-Ling Qian, Chao Shen, Qi-Quan Dai
Experimental Investigation On The Dynamic Response Of Pile Group Foundation On Liquefiable Ground Subjected To Horizontal And Vertical Earthquake Excitations, Heng-Yuan Zhang, De-Ling Qian, Chao Shen, Qi-Quan Dai
Rock and Soil Mechanics
To investigate the dynamic response of pile group foundation on liquefiable ground subjected to horizontal and vertical (bidirectional) coupling earthquake excitations, a shaking table model test for a dynamic interaction system with liquefiable ground –pile group foundation–frame tube structure was conducted. Different types of earthquake motions were selected as the excitations for the shaking table test, and then the influence of bidirectional coupling earthquake excitations on the dynamic response of liquefiable ground and pile group foundation were analyzed by comparing the test results of soil acceleration, excess pore water pressure and pile group strain subjected to horizontal unidirectional and bidirectional …
Earthquake Load Attenuation Using Eps Geofoam Buffers In Rigid Wall Applications, Richard J. Bathurst, S Zarnani
Earthquake Load Attenuation Using Eps Geofoam Buffers In Rigid Wall Applications, Richard J. Bathurst, S Zarnani
Research outputs 2013
The paper is a synthesis of previously published work by the authors that is focused on the use of expanded polystyrene (EPS) geofoam buffers for seismic load attenuation against rigid basement and soil retaining walls. The paper begins with a brief description of the first documented field application followed by a description of physical 1 m-high reduced-scale shaking table tests that provided the first "proof of concept". Next, details of the development and verification of a displacement-based model and a FLAC numerical model are described and simulation results that were verified against the physical shaking table tests presented. The numerical …
Pile Response Characteristics Of Liquefied Soil Layers In Shaking Table Tests Of A Large Scale Laminar Shear Box, Kaeko Yahata, Yasutsugu Suzuki, Hideki Funahara, Mutsuhiro Yoshizawa, Shuji Tamura, Kohji Tokimatsu
Pile Response Characteristics Of Liquefied Soil Layers In Shaking Table Tests Of A Large Scale Laminar Shear Box, Kaeko Yahata, Yasutsugu Suzuki, Hideki Funahara, Mutsuhiro Yoshizawa, Shuji Tamura, Kohji Tokimatsu
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
To better understand the causes of pile damages during earthquakes such as Hyogoken-Nanbu Earthquake, shaking table tests of soil-pile-structure interaction models were done using a large scale laminar shear box. Because the pile response is affected by both the ground motion and the structure's inertial forces, three models were test & a soil-pile model and two soil-pile-structure models. For the latter models, superstructures with long and short natural periods were tested separately. Through comparisons among the three cases, the influences on the pile response due to the inertial force of the superstructure for the long and short natural periods were …