Seismic Responses of a Large Unequal-span Underground Subway Station in Liquefiable Soil Using Shaking Table Test

The study on lateral dynamic response of pile foundation in liquefiable soil is a significant part about seismic damage. In this paper, a new data acquisition system of FBG and calculation methods is used in the small shaking table test. The results show that FBG method used in this test is proved to be efficient and acceptable in both time characteristics and precision characteristics, it may be widely applied in the future doubtlessly. What’s more, the characteristics of p-y curves in different peak accelerations are discussed. And varying of maximum stress and displacement by corresponding acceleration is discussed. A contrast about p-y curve between dry sand and saturate sand is related, which provides a new direction in research about p-y curve.

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Shaking table test of seismic responses of anchor cable and lattice beam reinforced slope

Journal of Mountain Science ◽

10.1007/s11629-019-5712-4 ◽

2020 ◽

Vol 17 (5) ◽

pp. 1251-1268

Author(s):

Jian-jing Zhang ◽

Jia-yong Niu ◽

Xiao Fu ◽

Li-cong Cao ◽

Qiang Xie

Keyword(s):

Shaking Table Test ◽

Shaking Table ◽

Seismic Responses ◽

Reinforced Slope ◽

Anchor Cable ◽

Lattice Beam

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Shaking Table Test of a RC Frame with EPSC Latticed Concrete Infill Wall

Shock and Vibration ◽

10.1155/2017/7163560 ◽

2017 ◽

Vol 2017 ◽

pp. 1-18 ◽

Cited By ~ 1

Author(s):

Baizan Tang ◽

Xiaojun Li ◽

Su Chen ◽

Lihong Xiong

Keyword(s):

Shaking Table Test ◽

Comprehensive Evaluation ◽

Shaking Table ◽

Wall Material ◽

Rc Frame ◽

Seismic Responses ◽

Concrete Wall ◽

Infill Wall ◽

Infill Walls ◽

Rc Shear Wall

The expansive polystyrene granule cement (EPSC) latticed concrete wall is a new type of energy-saving wall material with load-bearing, insulation, fireproof, and environmental protection characteristics. A series of shaking table tests were performed to investigate the seismic behavior of a full-scale reinforced concrete (RC) frame with EPSC latticed concrete infill wall, and data obtained from the shaking table test were analyzed. The experimental results indicate that the designed RC frame with EPSC latticed concrete infill wall has satisfactory seismic performance subjected to earthquakes, and the seismic responses of the model structure are more sensitive to input motions with more high frequency components and long duration. The EPSC latticed concrete infill wall provided high lateral stiffness so that the walls can be equivalent to a RC shear wall. The horizontal and vertical rebar, arranged in the concrete lattice beam and column, could effectively restrain the latticed concrete infill wall and RC frame. To achieve a more comprehensive evaluation on the performance of the RC frame with latticed concrete infill walls, further research on its seismic responses is expected by comparing with conventional infill walls and nonlinear analytical method.

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Shaking Table Test of Muti-Story Subway Station Considering Soil-Structure Interaction

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.694-697.321 ◽

2013 ◽

Vol 694-697 ◽

pp. 321-324 ◽

Cited By ~ 1

Author(s):

Shu Wei Wang ◽

Ying Ming Zhou ◽

Shu Yun Mi

Keyword(s):

Seismic Waves ◽

Shaking Table Test ◽

Response Spectrum ◽

Three Dimensional ◽

Soil Surface ◽

Shaking Table ◽

Subway Station ◽

Acceleration Process ◽

Underground Structures

In this paper, a three-dimensional shaking table test of three three-span subway station model is done. Three test seismic waves were selected in this experiment, which were applied to the model. Modal analysis of the structure was done, and the determination of the acceleration of the model structure was obtained. And the law of underground structures under earthquake damage was analysis. Soil surface acceleration process and its response spectrum and strain are obtained in the different amplitudes of ground motion input case. From experiment cracks in the emergence and development of the situation were observed, and which gives recommendations for the seismic design of underground structures.

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Experimental Study on the Seismic Response of Subway Station in Soft Ground

Journal of Earthquake and Tsunami ◽

10.1142/s1793431117500208 ◽

2017 ◽

Vol 11 (05) ◽

pp. 1750020 ◽

Cited By ~ 4

Author(s):

Ma Xianfeng ◽

Wang Guobo ◽

Wu Jun ◽

Ji Qianqian

Keyword(s):

Seismic Response ◽

Seismic Design ◽

Shaking Table Test ◽

Design Method ◽

Underground Structure ◽

Response Characteristic ◽

Shaking Table ◽

Subway Station ◽

Soft Ground ◽

Shaking Table Tests

Shaking table tests were conducted on typical models of subway structures subjected to several seismic shaking time histories to study seismic response of subway structures in soft ground as well as to provide data for validation of seismic design methods for underground structure. Three types of tests were presented herein, namely green field test, subway station test, and test for joint structure between subway station and tunnel. The similitude and modeling aspects of the 1g shaking table test are discussed. The seismic response of Shanghai clay in different depths was examined under different input waves to understand the acceleration amplification feature in both green field and in the presence of underground structure. Damage situation was checked on internal sections of both subway station and tunnels by halving the model structure. Structure deformation was investigated in terms of element strain under different earthquake loadings. The findings from this study provides useful pointers for future shaking table tests on underground structures/facilities, and the seismic response characteristic of underground structure derived from the shaking table test could be helpful for validating seismic design method for subway station.

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Dynamic Responses of RC Underground Subway Station and Soil during the Strong Earthquake

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.2018 ◽

2011 ◽

Vol 194-196 ◽

pp. 2018-2023

Author(s):

Jin Bian ◽

Lian Jin Tao ◽

Wen Pei Wang ◽

Bo Zhang

Keyword(s):

Underground Structure ◽

Time History ◽

Side Wall ◽

Relative Displacement ◽

Shaking Table ◽

Dynamic Responses ◽

Subway Station ◽

Rc Structures ◽

Underground Subway Station ◽

Table Model

Underground subway RC structures suffered significant damage during many earthquakes, so it is important to study the seismic behavior on RC subway structure. The shaking table model test is made of the Beijing typical subway station structure. In this article, the test is introduced briefly; then, the acceleration history curves are analyzed. By the test, it is found that the interaction exits between structure and soil. Under the low intensity earthquake, the underground structure will exert a very small influence on soil and vibrates with soil; under the high intensity earthquake, the soil will exert a large thrust on the underground structure and the relative displacement exists between them. Moreover, At the bottom of the structure side wall, the peak acceleration is larger than it in soil around the place, and at the top and middle of the structure side wall, the peak accelerations are smaller than them in soil around the place; with the depth increase, decrease the peak value, the excellence frequency and its amplitude of the acceleration time history.

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Shaking table test study on seismic performance of inclined pile foundations in liquefiable soil

Environmental Earth Sciences ◽

10.1007/s12665-020-09139-4 ◽

2020 ◽

Vol 79 (17) ◽

Cited By ~ 1

Author(s):

Wenlong Chen ◽

Jianlin Ma ◽

Shuai Cao ◽

Qinke Wang ◽

Mengting Wang

Keyword(s):

Seismic Performance ◽

Shaking Table Test ◽

Shaking Table ◽

Pile Foundations ◽

Test Study ◽

Liquefiable Soil ◽

Inclined Pile

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Experimental Investigation on Mid-Story Isolated Structures

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.4014 ◽

2010 ◽

Vol 163-167 ◽

pp. 4014-4021

Author(s):

Xiang Yun Huang ◽

Fu Lin Zhou ◽

She Liang Wang ◽

Liu Han Wen Heisha ◽

Xue Hai Luo

Keyword(s):

Dynamic Characteristics ◽

Shaking Table Test ◽

Base Isolation ◽

Shaking Table ◽

Dynamic Responses ◽

Seismic Responses ◽

Isolation Technique ◽

Vertical Stiffness ◽

Isolation Layer ◽

Rubber Bearings

Isolation technique has been acceded as a part of the China Seismic Code for Design of Buildings. In this code, the limitations for using isolation design are very strict, superstructure must be regular and the isolation layer must be located on the top of base (base isolated structure). Because of the needs of architecture and function or the feasibility of technique, some limitations have been broken in recent projects. Sometimes isolated layer can be set on the intermediate story, so-called the mid-story isolated structure. According to the characteristic of structure, isolation layer of mid-story isolated structure is set on a place where the structure’s vertical stiffness is suddenly changed, as like the top of the first story, middle story, conversion story of the structure. Laminated rubber bearings (LRB) are adopted as an isolation layer. Because the isolation layer is set on intermediate story, the whole structure is divided into superstructure and substructure; the structure’s dynamic characteristics are changed. The mechanism of mid-story isolated structure appears different characteristic compared with base isolation. The aim of mid-story isolation is not only to reduce seismic responses of superstructure, but also to reduce seismic responses of the substructure. Theoretical analysis and the shaking table test of the mid-story isolated structure were carried. And the response of mid-story isolated structure is discussed by comparing with the response of base-isolated structure and base fixed structure. The key problems of mid-story isolated structure are the force condition and the interaction of the structure up and below the isolation layer. Many factors, such as the number of story, mass, stiffness of superstructure and substructure, parameter of the isolation layer, have influence on the seismic behavior of the mid-story isolated structure. The optimum combination relationship of these factors is presented and dynamic characteristics and dynamic responses are investigated.

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