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混凝土桥梁时变性和不确定性下的收缩徐变分析
引用本文:刘沐宇,卢志芳.混凝土桥梁时变性和不确定性下的收缩徐变分析[J].华中科技大学学报(自然科学版),2011,39(10):116-120.
作者姓名:刘沐宇  卢志芳
作者单位:武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北武汉,430070
基金项目:武汉市科技局资助项目(201160923308); 中央高校基本科研业务费专项资金资助项目(2010-ZY-TJ-03)
摘    要:针对大跨混凝土桥梁收缩徐变同时具有时变性和不确定性的问题,提出利用按龄期调整的有效模量法分析时变性,运用拉丁超立方抽样随机有限元法分析其不确定性,从而提出了一种考虑时变性和不确定性的混凝土桥梁收缩徐变分析方法,达到同时考虑收缩徐变不确定性和时变性的目的.同时,通过APDL参数化技术,在ANSYS分析程序中嵌入混凝土弹性...

关 键 词:混凝土桥梁  收缩  徐变  不确定性  时变性  有效模量龄期调整  随机有限元方法

Shrinkage and creep analysis of concrete bridges with time variation and uncertainty considered
Liu Muyu Lu Zhifang.Shrinkage and creep analysis of concrete bridges with time variation and uncertainty considered[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011,39(10):116-120.
Authors:Liu Muyu Lu Zhifang
Institution:Liu Muyu Lu Zhifang(Hubei Key Laboratory of Roadway Bridge and Structure Engineering,Wuhan University of Technology,Wuhan 430070,China)
Abstract:There are time variation and uncertainty in long span concrete bridges while they shrink and creep.Thus,it was pointed that the age-adjusting effective modulus method could be used for analyzing the time variation and Latin hypercube sampling stochastic finite method could be used for analyzing the uncertainty.Then,a shrinkage and creep analysis of concrete bridges was proposed,which taking into account the time variation and uncertainty simultaneously.This analysis could be applied in finite program accord...
Keywords:concrete bridges  shrinkage  creep  uncertainty  time variation  age-adjusting effective modulus  stochastic finite element method  
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