Study on evaluation method of load-bearing capacity based on stochastic theory for concrete girder bridges in service

摘要：

In view of the shortages of the current strength evaluation method of concrete girder bridges in service,load-bearing capacity evaluation method was represented by inputting the coefficient of carrying capacity X1 load-bearing capacity depravation coefficient ξe,section discount coefficient ξC and section discount coefficient of steel reinforcement ξs into the strength evaluation equation,and considering the randomness of detection indicators belonging to every coefficient.The load-bearing capacity of concrete girder bridges in service was evaluated synthetically through Monte Carlo simulation.Assessment methods and procedures were introduced in this paper,and probability distribution and statistical parameters of random variables were statistically analyzed with practical engineering examples,which would be of some reference values for further improving the evaluation method of load-bearing capacity for concrete girder bridges in service.

关键词： Girder bridges in service Load-bearing capacity Probabilistic distribution Randomness

作者: Minshan Liu Wei Gao Qiwu Dong Yongwei Zhao

作者单位: Thermal Energy Engineering Research Centre,Zhengzhou University,Zhengzhou 450002,China

会议类型: 国际会议

会议名称: 国际断裂力学2009年会

会议地点: 成都

会议语种:英文

页码: 373-376

在线出版日期: 2009-10-16（万方平台首次上网日期，不代表论文的发表时间）