钢结构工程抗力时变模型的构建与验证

杨波; 戴国欣; 陈昌海; 刘东

doi:10.11835/j.issn.1674-4764.2008.05.020

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钢结构工程抗力时变模型的构建与验证

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- 钢结构工程抗力时变模型的构建与验证
- Construction and Confirmation of a Model for TimeDependent Resistance of the Steel Structure Project
- 土木与环境工程学报（中英文） 2008年30卷第5期页码：95-99
- 作者机构：
  
  重庆大学土木工程学院，重庆400045
- 作者简介：
- 基金信息：
- DOI：10.11835/j.issn.1674-4764.2008.05.020
  中图分类号：
- 纸质出版：2008
- 稿件说明：
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杨波, 戴国欣, 陈昌海, 等. 钢结构工程抗力时变模型的构建与验证[J]. 土木与环境工程学报（中英文）, 2008,30(5):95-99.

YANG Bo, DAI Guoxin, CHEN Changhai, et al. Construction and Confirmation of a Model for TimeDependent Resistance of the Steel Structure Project[J]. Journal of Civil and Environmental Engineering, 2008, 30(5): 95-99.
杨波, 戴国欣, 陈昌海, 等. 钢结构工程抗力时变模型的构建与验证[J]. 土木与环境工程学报（中英文）, 2008,30(5):95-99. DOI： 10.11835/j.issn.1674-4764.2008.05.020.

YANG Bo, DAI Guoxin, CHEN Changhai, et al. Construction and Confirmation of a Model for TimeDependent Resistance of the Steel Structure Project[J]. Journal of Civil and Environmental Engineering, 2008, 30(5): 95-99. DOI： 10.11835/j.issn.1674-4764.2008.05.020.

摘要

提出了一种全新的钢结构抗力时变模型，对多种影响因素在模型中的表述方式与初步取值范围展开了探讨。采用通用有限元程序提供的APDL语言将结构分析和其PDS模块的统计分析能力相结合，实现了基于蒙特卡罗（the Monte Carlo）有限元模拟方法的时变可靠度计算，并与非时变条件可靠性计算结果做出对比。经算例验证，结果表明：考虑抗力时变后，时间因素对结构的可靠性影响显著；同时文中提出的钢结构抗力时变函数在形式上是基本合理可行的。

Abstract

We developed a model of timedependent resistance for a steel structure project and discuss herein the expression and the primary value of many parameters in the model. On the basis of the APDL language furnished by universal finite element program

we united the functions of structural and statistic analyses. A timedependent reliability analysis was implemented. The result of the timedependent reliability analysis was compared with that of the no timedependent reliability analysis. Through testing a calculated example

we saw that when the timedependent resistance was considered

the factor of time greatly influences structural reliability. In addition

we found that the model of timedependent resistance for a steel structure is reasonable and feasible.

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