岩土力学2011，Vol.32Issue(6)：1781-1786,6.
地下水开采对桥梁结构影响的离心模型试验研究
Centrifuge modeling of response of bridge due to exploiting groundwater
摘要
Abstract
Exploiting groundwater is a main reason to the ground settlement and uneven settlement can do great harm to the highspeed railway bridge.Centrifuge model tests are conducted to investigate the influence of exploiting groudwater on the high-speed railway bridge.The deformation of soils and the bridge are measured dunng the centrifuge model tests of exploiting water based on a drainage system developed to simulate exploiting water during centrifuge tests.The influences of uneven ground settlements on the rigid bridge.simply supporfed single bridge and simply supported multispan bridge are discussed.The results show that the bridge deforms intensively during the period of unsteady fluid flow after water was exploited initially.The axial strain of the deck can be decreased by reducing the length of the balk or replacing the bridge pier by hinged bearing.The horizontal displacement of ground can cause some deformation on the central part of the rigid bridge.关键词
地面不均匀沉降/桥梁结构/高速铁路/离心模型试验Key words
ground uneven settlement/ bridge/ high-speed railway/ centrifuge modeling test分类
建筑与水利引用本文复制引用
程嵩,张嘎,郑瑞华,孙振岳..地下水开采对桥梁结构影响的离心模型试验研究[J].岩土力学,2011,32(6):1781-1786,6.基金项目
973课题资助(No.2007CB714108) （No.2007CB714108）
国家科技支持计划课题资助(No.2006BAA01A24-1). （No.2006BAA01A24-1）
