Indexed by:
Abstract:
Static pushover test of underground structures is an ideal method in seismic research due to its large model structure size and controllable stress level. In order to solve the problem of complex and expensive static pushover test process for soil-underground structure system considering soil-structure interaction, a simple static pushover test technology considering spring-underground structure system was proposed which can approximately consider the soil-structure interaction. Steel springs were set to simulate the initial earth pressure and soil-structure interaction during the pushover process. In the test, the springs on both sides of the structure were compressed and vertical uniformly distributed load was applied to simulate the initial earth pressure on the structure. The springs also limited the horizontal displacement of the bottom of the structure, and a horizontal thrust was applied on the top of one side of the structure to push the structure from the initial state to failure to simulate the horizontal seismic action on the structure. The test object was a scaled model of the Daikai station damaged in the 1995 Hanshin earthquake in Japan, and the geometric scale ratio of the model structure was 1 / 5. Based on the test device, a detailed test scheme was designed, and the feasibility of this test assumption was verified by carrying out the test. The relationship between the shear capacity of the test object and structural inner-story drift could be obtained by analyzing the test results. The weak components and the failure mode of the structure were studied. It can be seen that the surrounding soil had an obvious restraint effect on the underground structures during the earthquake process, and the surrounding soil improved the lateral collapse resistance of the underground structures, the middle column was the weak member of the model structure. © 2023 Science Press. All rights reserved.
Keyword:
Reprint Author's Address:
Email:
Source :
Journal of Building Structures
ISSN: 1000-6869
Year: 2023
Issue: 1
Volume: 44
Page: 248-258
Cited Count:
SCOPUS Cited Count: 8
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
Affiliated Colleges: