权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Evaluation of structural reliability of reinforced concrete structure in consideration for inevitable uncertainty and probabilistic appraisal of its life cycle cost

考虑不可避免的不确定性的钢筋混凝土结构的结构可靠性评价及其生命周期成本的概率评估

基本信息

批准号：
15560414
负责人：
NAKAYAMA Takahiro
金额：
$ 1.66万
依托单位：
Hiroshima Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Since one of our country policies toward cost curtailment is minimization of the life cycle cost of various institutions and structures, some computer programs have been developed by respective construction companies and software firms.However, deterministic approach in almost programs is adopted without regard to the physical uncertainties related to structural safety and reliability such as material strength, circumstances of construction sites, others. On the other hand, probabilistic method is used to estimate numerically the structural safety in consideration for their inevitable uncertainties.In this study, a computer program which is able to be calculated the life cycle cost of reinforced concrete structure members under damage from salt was developed based upon structural reliability theory, because the method to evaluate structural safety and reliability with reliability index is recommended in International Organization for Standardization, namely ISO 2394. Repair and reinforcement of a structural member subjected to deterioration by salt are judged by crack width and reliability index respectively.The result of this study is to develop the computer program by which expected LCC of a reinforced concrete structural member under damage from salt is able to be valuated first. Further, some useful results related to maintenance plan of reinforced concrete structures were obtained based upon parametric studies by usage of the developed program.

由于我国的政策之一，对成本削减是最小化的寿命周期成本的各种机构和结构，一些计算机程序已经开发出相应的建筑公司和软件公司，但在大多数程序中采用确定性的方法，而不考虑物理不确定性有关的结构安全性和可靠性，如材料强度，施工现场的情况下，等。另一方面，考虑到结构的不确定性，采用概率方法对结构的安全性进行数值估算，本研究基于结构可靠度理论，编制了一个计算钢筋混凝土结构构件在盐害作用下寿命周期费用的计算机程序，因为国际标准化组织ISO 2394推荐了用可靠度指标来评价结构安全可靠性的方法。盐蚀结构构件的修复和加固分别根据裂缝宽度和可靠性指标进行判断，本研究的结果是开发了计算机程序，首先可以评估盐蚀钢筋混凝土结构构件的预期寿命周期成本。此外，一些有用的结果有关的维修计划的钢筋混凝土结构的参数研究的基础上，使用所开发的程序。