摘要
针对独柱墩桥梁倾覆倒塌时有发生的现状,从现行相关规范的局限出发,给出了抗倾覆稳定安全系数的定义及详细的验算方法,适用于工程抗倾覆稳定验算。通过对桥宽、梁端支座间距、曲率半径、联长等影响参数进行有限元数值分析,得到了独柱墩抗倾覆稳定安全系数随以上参数改变而变化的规律,并以此建立了能够较为全面的反映倾覆破坏临界状态的抗倾覆稳定安全评价指标体系。
In view of the present situation that single column bridge collapse have occurred, starting from the cur- rent specification limits, give the definition of safety factor of anti - overturning stability and the detailed calculation method, the concept is simple, strong operability, suitable for engineering anti overturning stability checking. Find out the law that the safety factor of anti - overturning stability of single column bridge change with the change of the above parameters and put forward the design suggestions through the finite element numerical analysis of the bridge deck width, supports spacing, curvature radius, length and other influencing parameters, and establish the index system of safety e- valuation of anti - overturning stability, it is able to reflect the overturning critical state comprehensively.
出处
《浙江交通职业技术学院学报》
CAS
2013年第3期1-6,11,共7页
Journal of Zhejiang Institute of Communications
关键词
独柱墩
验算方法
参数分析
安全评价
single column bridge
calculation method
analysis of parameters
safety assessment
