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公路渗沟用聚乙烯管道上的可变作用标准值,使用回归模型、车辆与堆积荷载应力值比较来确定,并推导出管道环刚度极限值计算简化公式,提出了覆土高度分界值的概念。同时确定以管道沿横向设置在路基下方时的环刚度极限值进行控制,并在工程实例中分别进行管道沿纵、横向设置时的环截面变形、环截面强度、环截面压屈失稳、抗浮稳定及水力验算。通过公路渗沟用聚乙烯管结构与排水性能的计算分析,既有效补充了公路工程行业规范中渗沟用聚乙烯管结构强度与稳定性计算的内容,又可为类似公路管式渗沟设计计算起到很好的指导作用。
The standard value of variable action on polyethylene pipe for roadway seepage ditch is determined by regression model and comparison of the stress value of vehicle and pile load. The simplified formula for calculating the limit value of pipe ring stiffness is deduced, and the concept of cover height cut-off value is proposed. At the same time, it is determined that the ring stiffness limit value when the pipe is arranged under the roadbed in the transverse direction is controlled. In the engineering example, the ring cross-section deformation when the pipe is arranged longitudinally and transversely is carried out separately. The ring cross-section strength, Floating stability and hydraulic checking. Through the calculation and analysis of polyethylene pipe structure and drainage performance of roadway seepage ditches, it not only effectively supplements the calculation of structural strength and stability of polyethylene pipe for seepage ditch in highway engineering norms, Good guiding role.