岩土工程学报2024，Vol.46Issue(z1)：1-5,5.DOI:10.11779/CJGE2024S10022
软黏土中含桩地下结构地震响应离心试验模拟
Centrifugal mode tests on seismic response of underground structures with pile foundations in soft clay
黄茂松 1姚钧天 1俞剑 1王浩然 2张中杰2
作者信息
- 1. 同济大学土木工程学院地下建筑与工程系,上海 200092||同济大学岩土及地下工程教育部重点实验室,上海 200092
- 2. 上海市城市建设设计研究总院(集团)有限公司,上海 200125
- 折叠
摘要
Abstract
The centrifuge shaking table tests are conducted to investigate the dynamic response characteristics of large underground structures with piles,such as underground transportation systems,under seismic loading.In addition,the potential hazards like ground liquefaction and structural buoyancy are examined.The saturated soft clay is used as the foundation soil in the tests,which are designed to represent three scenarios:free field condition,integrated shallowly-buried underground structure,and equivalent single-cell shallowly-buried underground structure.To eliminate the boundary reflection effects,a layered shear box is utilized.The horizontal seismic tests are conducted at 50g centrifugal acceleration.The test results indicate that different structures amplify the response at specific frequency bands associated with their natural vibrations.Under the premise of the equivalent overall mass,static buoyancy and moment of inertia,the integrated structure reduces the effects of the natural vibrations during seismic events compared to the single-cell configuration and exhibits superior post-seismic buoyancy resistance properties.关键词
离心振动试验/桩基/地震/相互作用/频域特性Key words
dynamic centrifuge test/pile foundation/earthquake/interaction/frequency characteristic分类
土木建筑引用本文复制引用
黄茂松,姚钧天,俞剑,王浩然,张中杰..软黏土中含桩地下结构地震响应离心试验模拟[J].岩土工程学报,2024,46(z1):1-5,5.
