摘要
针对大件运输特载车过桥问题,对特载车荷载分项系数进行研究。根据特载车荷载的特点,确定特载车荷载的概率分布和统计参数。采用概率可靠度方法,对受弯、受剪构件以及6种活恒载比,进行了结构承载能力可靠度计算。以最低可靠指标为尺度,适当考虑了一定的安全余量,推荐了特载车荷载分项系数为1.1。工程应用表明,该系数用于大件运输特载车过桥的结构检算基本可行。
Aiming at special load vehicle through the bridge,load subentry coefficient was researched. According to the characteristics of special load vehicle,the probability distribution and statistical parameters of special vehicle’s load were determined. Referring to the bending member and shear member,and six ratios of live load to dead load,the reliability indexes of bearing capacity were calculated based on reliability method. According to the permissible reliability index and considering the structural safety,the load subentry coefficient 1. 1 of special load vehicle was recommended. Engineering application shows that the coefficient 1. 1 is feasible for bridge structure checking of large- scale equipment transportation.
出处
《浙江交通职业技术学院学报》
CAS
2014年第3期5-9,共5页
Journal of Zhejiang Institute of Communications
关键词
大件运输
荷载分项系数
可靠度方法
最低可靠指标
large-scale equipment transportation
load subentry coefficient
reliability method
permissible reliability index
