| 工程结构极限承载力上限分析的弹性模量缩减法 |
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| 引用本文： | 张伟,杨绿峰,卢文胜.工程结构极限承载力上限分析的弹性模量缩减法[J].工程力学,2011(9):30-38. |
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| 作者姓名： | 张伟 杨绿峰 卢文胜 |
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| 作者单位： | 广西大学土木建筑工程学院工程防灾与结构安全教育部重点实验室;同济大学土木工程学院土木工程防灾国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目(50768001,50909021); 中国博士后科学基金项目(20090460840); 广西科学基金项目(桂科自0991020Z,桂科青0991006); 广西科技计划项目(桂科能0992028-7,2009TMZR002) |
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| 摘 要： | 基于弹性模量缩减法和基准体法，建立了工程结构极限承载力上限分析的方法。该法结合弹性有限元法进行迭代分析，以广义屈服函数表达的单元承载比作为弹性模量调整的控制参数，根据单元承载比均匀度确定模量调整的阀值——基准承载比，利用单元应变能转化中的能量守恒原理建立单元弹性模量调整策略，通过缩减高应力单元的弹性模量模拟结构弹塑性损...
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| 关 键 词： | 弹性模量缩减法 极限承载力 上限 单元承载比 基准体法 |
ELASTIC MODULUS REDUCTION METHOD FOR THE UPPER BOUND OF ULTIMATE BEARING CAPACITY OF STRUCTURES |
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| ZHANG Wei,YANG Lu-feng,LU Wen-sheng.ELASTIC MODULUS REDUCTION METHOD FOR THE UPPER BOUND OF ULTIMATE BEARING CAPACITY OF STRUCTURES[J].Engineering Mechanics,2011(9):30-38. |
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| Authors: | ZHANG Wei YANG Lu-feng LU Wen-sheng |
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| Affiliation: | ZHANG Wei1,YANG Lu-feng1,LU Wen-sheng2(1.Key Laboratory of Engineering Disaster Prevention and Structural Safety of China Ministry of Education,School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China,2.School of Civil Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | A numerical solution procedure is presented for the upper bound of ultimate bearing capacity of structures based on the elastic modulus reduction method(EMRM) and the reference volume method.The element bearing ratio(EBR) is developed based on the generalized yield criterion,and is taken as the governing parameter in the process of modulus reduction.The reference EBR is presented by means of the degree of uniformity(DOU) of the EBR.The modulus adjustment strategy is proposed based on the principle of strain... |
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| Keywords: | elastic modulus reduction method ultimate bearing capacity upper bound element bearing ratio reference volume method |
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