土工基础

›› 2013, Vol. 27 ›› Issue (2): 86-88.

• 工程实录 • 上一篇    下一篇

土钉支护的地震动力响应分析

 马德翠1，周其健2，薛新华3   

  1. （1.中冶成都勘察研究总院有限公司，成都 610023；2.中国建筑西南勘察研究总院有限公司，成都 610081；3.四川大学水利水电学院，成都 610065）
  • 收稿日期:2013-01-23 出版日期:2013-04-20 发布日期:2013-04-26
  • 作者简介:马德翠（1980-），女，工程师，硕士，研究方向为岩土工程勘察、地质灾害评价与治理设计。

Seismic Response of Soil Nailing Supported Deep Excavations

MA Decui1, ZHOU Qijian2， XUE Xinhua3   

  1. (1.Chengdu Surveying Geotechnical Research Institute Co, Ltd., MCC, Chengdu 610023;2.China Southwest Geotechnical Investigation ＆design institute Co, Ltd, Chengdu 610081;3.College of Water Resources & Hydropower, Sichuan University, Chengdu 610065）
  • Received:2013-01-23 Online:2013-04-20 Published:2013-04-26

摘要： 我国是地震频发的国家，对有抗震要求的土钉支护不但要进行静力稳定性分析，还应进行支护结构动力响应分析。通过对某基坑土钉支护进行的有限元模拟，研究了土钉轴力在地震荷载作用下的变化规律。结果表明，在地震荷载作用下，土钉轴力分布呈现非均匀非线性变化，且基本呈增大趋势。

关键词: 基坑, 土钉支护, 地震作用, 动力响应

Abstract: Seismic related hazard is frequently encountered in some areas of China. Therefore, in addition to the static analysis of the deep excavation, the seismic stability of the supporting structures also needs to be checked. The finite element analysis is performed on a soil nailing supported deep excavation. The axial stress within the soil nails under the seismic loading are studied. The results indicate that the seismic load controls the soil nail design under the designated earthquake magnitude.

Key words: Deep Excavation, Soil Nailing, Earthquake Action, Dynamical Response