型钢混凝土闸墩整体结构可靠度分析  

Reliability analysis of integral structure of steel reinforced concrete gate pier

作　　者：张小飞[1] 黄佳敏 黄耀煌 何飞龙 田羽 ZHANG Xiao-fei;HUANG Jia-min;HUANG Yao-huang;HE Fei-long;TIAN Yu(College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2021年第4期896-904,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51569004)。

摘　　要：型钢混凝土闸墩是一种工作性能优越的新型闸墩结构。为了分析结构参数随机性对闸墩结构可靠度的影响,基于结构可靠度理论,以型钢混凝土闸墩的极限荷载和静水荷载作为综合随机变量,构建反映闸墩整体功能状态的功能函数,采用验算点法(JC法)计算反映结构可靠性的结构可靠度指标。并研究了型钢布置根数、埋置长度、布置角度及横向型钢布置形式的改变对闸墩整体可靠度的影响,结果表明:4种布置形式的改变对闸墩的可靠度均产生影响,型钢混凝土闸墩的整体可靠度与型钢布置根数、埋置长度均呈线性相关关系,而与型钢布置角度则不存在线性关系,最佳型钢布置角度仍需依据实际工程来确定。Steel reinforced concrete gate pier is a new type of gate pier structure with superior working performance.In order to analyze the influence of structural parameter randomness on the reliability of steel reinforced concrete gate pier,the three-dimensional model of steel reinforced concrete gate pier was established by using ANSYS platform.Based on the theory of structural reliability,the ultimate load and hydrostatic load of steel reinforced concrete pier were taken as comprehensive random variables.The performance function was constructed,which reflected the overall functional state of the steel reinforced concrete gate pier structure.The structural reliability index reflecting the structural reliability was calculated by the checking point method(JC method).The effects of the number of section steel layout,embedment length,arrangement angle and transverse section steel layout on the overall reliability of the gate pier were studied.The study shows that the changes of section steel layout number,embedment length,layout angle and transverse section steel layout form all have effect on the reliability of gate piers.The overall reliability of steel reinforced concrete gate piers has a linear correlation with the number of section steel layout elements and embedment length,but not with the section steel layout angle,and the best section steel layout angle still needs to be determined according to the actual project.

关 键 词：结构可靠度 闸墩 型钢混凝土 随机性 型钢布置形式 

分 类 号：TV335[水利工程—水工结构工程]