论文部分内容阅读
在分析了排水固结法的设计参数的基础上建立了极限状态方程,通过典型算例及既有工点校准计算找出目前规范隐含的可靠指标,确定了各随机变量的分项系数;结合既有规范确定了路基结构重要性系数及路基稳定调整系数;根据既有工程经验提出了工法调整系数;建立了排水固结法极限状态设计表达式。最后对新长铁路及广珠铁路等软土加固地基,对比分析了总安全系数法与分项系数的极限状态设计法的结果,表明本文提出的极限状态设计方法与目前规范采用的方法设计水准是一致的。
Based on the analysis of the design parameters of the drainage consolidation method, the limit state equation is established, and the reliability indices implied by the current codes are found through the typical calculation and the calibration of the existing work points. The partial coefficients of each random variable are determined. According to the existing specifications, the importance factor of subgrade structure and the adjustment coefficient of subgrade stability are determined. Based on the existing engineering experience, the adjustment coefficient of work method is proposed and the expression of limit state design of drainage consolidation method is established. Finally, the results of the method of limit state design for the total safety factor method and the sub-coefficient are compared with those of the soft soil foundation, such as the Xin-Chang-Chang-Guang Railway and Guang-Zhu-Zhu Railway. The results show that the limit state design method proposed in this paper is similar to the method design standard Is consistent.