摘要
基于现役钢闸门结构维修、加固的需要 ,分析了钢闸门结构加固后可靠度分析时荷载的统计参数。以钢闸门结构受弯构件为例推导分析了其抗力统计参数的计算公式 ,提出了现役钢闸门结构加固后的可靠度计算方法。在此基础上 ,对受弯构件加固前后的可靠度进行了计算分析。计算结果表明 ,当钢闸门结构受弯构件按《钢结构检测评定及加固技术规程》规定的方法加固后 ,其可靠指标满足一级建筑物的安全水准 ,说明《钢结构检测评定及加固技术规程》
Existing steel gate structures need repairing a nd rehabilitation for extending their service life. Based on this requirement, sta tistic parameters of load for reliability assessment of steel gate structure aft er strengthening were analyzed, and the formulae of resistance statistical param eters were derived by taking an example of the steel gate structure members subj ected to bending moment after strengthening. Moreover, reliability calculation w as conducted to analyze the reliabilities of existing steel gate structures befo re and after strengthening. The calculation results show that the reliability le vel of the steel gate structural members subjected to bending moment is enhanced after strengthening, and the reliability index meets the requirement of safety level of the first level structures after they are strengthened according to the Technical Specification for Inspection and Strengthening of Steel Structure. Th is indicates that the strengthening method according to the specification can be accepted.
出处
《中国农村水利水电》
北大核心
2003年第10期33-35,38,共4页
China Rural Water and Hydropower
基金
科学技术部社会公益研究专项资金项目<水工金属结构安全评估的技术标准研究>资助项目
关键词
水工建筑物
钢闸门
结构
加固
可靠度评估
受弯构件
steel gate structures
strengthening
member su bjected to bending moment
reliability loads resistance
