摘要
为解决建筑工程结构设计中目标可靠度与计算可靠度之间存在不同程度差异,改善目前设计方法中基于可靠度理论的分项系数取值偏低的问题,本文以实际工程为例,在介绍建筑工程可靠度基本计算理论和计算方法的基础上,以设计值法计算恒载、活载和荷载组合的分项系数,并将设计值法应用于工程案例计算,研究钢筋混凝土结构在轴心受压和受弯条件下的可靠度指标变化情况。研究表明,随着荷载效应比的增加,钢筋混凝土结构在轴心受压和受弯条件下的可靠度指标曲线均呈现先增加后减小的趋势;随着计算可靠度的增加,目标可靠度呈现非线性增加,呈现逐步收敛的趋势。
In order to solve the difference between the target reliability and the calculated reliability in the structural design of building engineering,and improve the problem that the value of the partial coefficient based on the reliability theory is low in the current design method,taking the actual project as an example,this paper calculates the partial coefficient of dead load,live load and load combination with the design value method on the basis of introducing the basic calculation theory and calculation method of the reliability of building engineering,The design value method is applied to engineering case calculation to study the change of reliability index of reinforced concrete structure under axial compression and bending conditions.The research shows that with the increase of load effect ratio,the reliability index curves of reinforced concrete structures under axial compression and bending show a trend of first increasing and then decreasing;With the increase of computational reliability,the target reliability increases nonlinearly and converges gradually.
作者
韩冰
Han Bing(Yantai Dongyuan Electric Power Design Co.,Ltd.,Yantai 264000,China)
出处
《科学技术创新》
2022年第20期117-120,共4页
Scientific and Technological Innovation
关键词
建筑工程
荷载
结构设计
可靠度指标
敏感系数
组合系数
Construction Engineering
Load
Structural design
Reliability index
Sensitivity coefficient
Combination coefficient
