液化场地桩-土-桥梁结构动力相互作用振动台试验模型相似设计方法  

SCALE MODELING METHOD OF SHAKING TABLE TEST OF DYNAMIC INTERACTION OF PILE-SOIL-BRIDGE STRUCTURE IN GROUND OF SOIL LIQUEFACTION

作　　者：凌贤长[1] 王臣[1] 王成[2] 

机构地区：[1]哈尔滨工业大学土木工程学院 [2]同济大学土木工程防灾国家重点实验室

出　　处：《岩石力学与工程学报》2004年第3期450-456,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金(50178027;50378031);土木工程防灾国家重点实验室访问学者基金资助项目。

摘　　要：当今,模拟振动台试验是研究工程抗震能力与破坏机理的重要手段之一。模型相似设计是确保振动台试验能够尽可能真实地反映原型动力性状的关键之一。基于目前广泛应用的Bockinghamπ定理,主要采用量纲分析方法,并且结合考虑模型与原型之间的材料变形应力-应变本构关系及桩-土接触边界动力响应相似性,求解液化场地桩-土-桥梁结构动力相互作用振动台试验的模型设计相似关系,同时提出人工质量问题的解决办法。Nowdays,scale modeling shaking table test is an important method to study aseismic ability and destroyable mechanism of engineering structure. The design of scale model is one of keys to insure that shaking table test can really reflect the dynamic characters of prototype. In order to solve the similitude problem of shaking table scale modle test of dynamic interaction of pile-soil-bridge structure in ground of soil liquefaction,based on the theorem of Bockingham p widely applied at present,the dimensional analysis method is used,and the constitutive strain-stress relationship of material between model and prototype and the dynamic response similarity of pile-soil interface are considered at the same time. Finally the method is put forward to solve artificial mass problem.

关 键 词：土木工程 模型相似设计 振动台 抗震 动力响应 

分 类 号：TU435[建筑科学—岩土工程]