液化场地桩基桥梁震害响应大型振动台模型试验研究

›› 2006, Vol. 27 ›› Issue (1): 7-10.

液化场地桩基桥梁震害响应大型振动台模型试验研究

凌贤长¹，郭明珠²，王东升³，王臣¹，王丽霞^{1, 5}，王志强⁴

1.哈尔滨工业大学土木工程学院，哈尔滨 150090；2.北京工业大学土木工程学院，北京 100022； 3.大连海事大学道路与桥梁工程研究所，大连 116026；4.同济大学桥梁工程系，上海 20092；5.吉林建筑工程学院交通工程系，长春 130021

收稿日期:2004-07-12 出版日期:2006-01-10 发布日期:2013-10-31
作者简介:凌贤长，男，1963年生，博士，教授，博士生导师，主要从事岩土地震工程、地下岩土工程、冻土工程、岩土工程灾害防治方面研究。
基金资助:
国家自然科学基金项目（No.50378031，50178027）

Large-scale shaking table model test of seismic response of bridge of pile foundation in ground of liquefaction

LING Xian-zhang¹, GUO Ming-zhu², WANG Dong-sheng³, WANG Chen¹, WANG Li-xia^1,5, WANG Zhi-qiang⁴

1.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 2.School of Civil Engineering, Beijing University of Technology, Beijing 100022, China; 3.Institute of Road and Bridge Engineering, Dalian University of Maritime Affairs, Dalian 116026, China; 4.Department of Bridge Engineering,Tongji University, Shanghai 200092, China; 5.Department of Traffic Engineering, Jilin Architectural and Civil Engineering Institute, Changchun 130021, China

Received:2004-07-12 Online:2006-01-10 Published:2013-10-31

摘要/Abstract

摘要： 采用大型振动台进行液化场地桩基桥梁震害响应模型试验，很好再现了自然地震触发场地液化及结构破坏的各种宏观现象。0.15gEl Centro波输入下，上部砂层局部液化，桩-柱墩加速度主要表现为低频反应，桩动应变幅值自下而上很快增大、到达地表则大幅度减小。0.5gEl Centro波输入下，整个砂层全部液化，桩被折断且加速度也主要表现为低频反应，桩动应变幅值自下而上很快增大、到达地表则大幅度减小。砂层液化与否，对桩-柱墩动力反应影响很大。

关键词: 液化场地, 桩基桥梁, 震害响应, 大型振动台模型试验

Abstract: The proportional model test of seismic response of bridge of pile foundation in liquefaction ground is done by a large-scale shaking table, which can commendably recurrence the main phenomenon of ground liquefaction and structure breakage arisen from natural earthquake. In input of 0.15gEl Centro wave, the upside of the saturation sand stratum is partly liquefied; the low-frequency response of acceleration appears on pile and pillar frusta; and the peak value of pile dynamical strain fastly aggrandizes from bottom to top; and moreover, largely minishes up to toft surface. In input of 0.5gEl Centro wave, the saturation sand stratum is entirely liquefied; the low-frequency response of acceleration also appears on pile and pile is broken; and the peak value of pile dynamical strain fastly aggrandizes from bottom to top, and moreover, largely minishes up to toft surface. It has importantly influence upon dynamic response of pile and pillar frusta that the saturation sand stratum is liquefied or not.

Key words: liquefaction ground, bridge of pile foundation, response of seismic destroy, large-scale shaking table model test

中图分类号:

U 441+.3

凌贤长，郭明珠，王东升，王臣，王丽霞，王志强 . 液化场地桩基桥梁震害响应大型振动台模型试验研究[J]. , 2006, 27(1): 7-10.

LING Xian-zhang , GUO Ming-zhu , WANG Dong-sheng , WANG Chen , WANG Li-xia , WANG Zhi-qiang . Large-scale shaking table model test of seismic response of bridge of pile foundation in ground of liquefaction[J]. , 2006, 27(1): 7-10.

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