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Full-Text Articles in Geotechnical Engineering
Vertical Vibration Response Of Rigid Strip Footings On A Viscoelastic Soil Layer Overlying Bedrock, Chang-Jie Zheng, Yu-Ze He, Xuan-Ming Ding, Lu-Bao Luan, Ye-Wei Chen
Vertical Vibration Response Of Rigid Strip Footings On A Viscoelastic Soil Layer Overlying Bedrock, Chang-Jie Zheng, Yu-Ze He, Xuan-Ming Ding, Lu-Bao Luan, Ye-Wei Chen
Rock and Soil Mechanics
Considering the influence of soil thickness, the vertical vibration response of rigid strip footings resting on viscoelastic soil is theoretically investigated. Based on the assumptions for footing and foundation with rigid bedrock boundary condition, employing the method of Fourier transform, this mixed-boundary value problem is expressed as a pair of dual integral equations, which are transformed to a set of linear equations by means of Jacobi orthogonal polynomials and solved numerically. The solution in this study is compared with the solution of elastic half-space in the literature to verify its rationality. The results demonstrate that the attenuation of ground waves …
Numerical Analysis On Dynamic Response Characteristics Of Geosynthetic Reinforced Embankment Under Moving Load, Ling Zhang, Qiang Ou, Ming-Hua Zhao, Xuan-Ming Ding, Jian-Fei Liu
Numerical Analysis On Dynamic Response Characteristics Of Geosynthetic Reinforced Embankment Under Moving Load, Ling Zhang, Qiang Ou, Ming-Hua Zhao, Xuan-Ming Ding, Jian-Fei Liu
Rock and Soil Mechanics
The dynamic response of geosynthetic reinforced embankment under traffic moving load has attracted increasing attentions in the engineering field. A 3D model of geosynthetic reinforced embankment was established by using the ABAQUS finite element software in this paper, which was used to analyze the dynamic stress and deformation of geosynthetic reinforced embankment under moving load. The traffic load was simulated by two moving rectangular plane loads. Fortran subroutine was developed to control the amplitude, range, and speed of the moving load. The equivalent linear viscoelastic model was developed to simulate embankment fill to reflect the viscoelasticity of embankment fill. The …
Dynamic Response Of A Track Coupled With A Transversely Isotropic Ground Due To Train Axle Loads, Yi-Cheng Li, Shi-Jin Feng
Dynamic Response Of A Track Coupled With A Transversely Isotropic Ground Due To Train Axle Loads, Yi-Cheng Li, Shi-Jin Feng
Rock and Soil Mechanics
To study the environmental vibrations induced by train loads, an analytical model for a track coupled with a layered transversely isotropic (TI) ground is developed. The model can consider the alternate distribution of TI elastic and poroelastic layers in the ground to describe soils and rocks under different moisture conditions compared with existing models comprising only one type of medium. Based on the analytical model, the governing equations of TI media are solved firstly using Fourier transform and a potential function method. Then the exact stiffness matrix method is adapted to derive solutions to the layered ground with different media. …
Model Test Study On Dynamic Response Characteristics Of Host Rockmass And Supporting Bolt Under Blasting Load, Shi-Hai Chen, Jia-Chen Gong, Shuai-Wei Hu
Model Test Study On Dynamic Response Characteristics Of Host Rockmass And Supporting Bolt Under Blasting Load, Shi-Hai Chen, Jia-Chen Gong, Shuai-Wei Hu
Rock and Soil Mechanics
To study the dynamic response characteristics of host rockmass and supporting bolt under blasting load, a three-dimensional dynamic loading physical model test was performed using an underground engineering model test system. The propagation law of blasting seismic wave and the dynamic response characteristics of supporting bolt were tested using electric spark source instead of traditional explosives. Experimental research results show that the electric spark source has the characteristic of the impact loading, which can well replace traditional high explosives. The radial acceleration peak values and the axial and hoop strain peak values of blasting seismic wave within host rock do …
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 …
Centrifugal Shaking Table Test On Dynamic Response Characteristics Of Tunnel Entrance Slope In Strong Earthquake Area, Yang Ren, Tian-Bin Li, Lin Lai
Centrifugal Shaking Table Test On Dynamic Response Characteristics Of Tunnel Entrance Slope In Strong Earthquake Area, Yang Ren, Tian-Bin Li, Lin Lai
Rock and Soil Mechanics
The investigation of tunnel damage after strong earthquake shows that the seismic damage of tunnel entrance is quite serious, so it is necessary to further investigate the dynamic response of tunnel entrance slope. Taking the typical tunnel entrance slope in Wenchuan earthquake area as an example, the dynamic response characteristics of tunnel entrance slope under strong earthquake are studied using large centrifugal shaking table test. The experimental results show that: 1) The acceleration amplification on the slope and inside the slope has a significant elevation effect, the acceleration amplification coefficient of the tunnel arch roof is larger 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 …