摘要
分析水闸钢闸门所受静水压力的统计参数,采用JC法对水闸钢闸门构件的可靠指标进行初步校准,计算结果表明:闸门构件可靠指标满足一级建筑物的安全水准;提出钢闸门结构设计目标可靠指标的取值建议.根据可靠指标及用钢量与现行规范校准的目标可靠指标及用钢量相比变化不大的原则,采用最小二乘法优化得到结构系数的取值为1 45.
An analysis is made of the statistic parameters of hydrostatic loads on the steel gate structure. The reliability indexes of the structural members are calibrated by use of the JC method, and the calculated results show that the reliability indexes of the members meet the safety level of class 1 structures. According to the calculated results, a reasonable scope of target reliability indexes is recommended for steel gate design. Based on the principle that the differences in reliability index and steel consumption obtained with the probabilistic limit design method and the current stress design criterion is not significant, an optimal structure coefficient of 1.45 is derived by use of the least square method.
出处
《水利水电科技进展》
CSCD
2003年第6期17-20,共4页
Advances in Science and Technology of Water Resources
关键词
钢闸门
可靠指标
分项系数
结构系数
校准
steel gate
reliability index
partial factor
structural coefficient
calibration
