High Fill Embankment Culvert Structure Type

There are many high-staked soil embankment culvert in the west highway construction, which caused by the special geography condition. The function of culvert is similar to bridge 's. Compared to bridge, the construction cost of culvert is less and the condition of construction requested is lower. So it is the first choice of designer and constructor. At the same time, during the culvert design and construction, how to overcome the shortage in calculation about high fills the embankment of the culvert calculation write in the present "Road Bricks And Stones And Concrete Arch of Bridges Design Standard" and after thinking from each factor and angle and ensuring the construction quality how to enhance the rated capacity end to end, are very important topics. This article is about analysis and research of high fills in the embankment culvert typical section pattern .The measure used in analysis and research is finite-element method .And some significance conclusions can be obtained from that. The main content includes following several aspects:1. Elaborating load characteristics of high fills in the culvert embankment; Summarizing earth pressure coefficient of the different structure pattern and compared with the railroad standard's; Analyzing and discussing the influence of terrain to culvert and the commonly measure which used to release the load of culvert; Introducing the main formula which are used to calculate the vertical earth pressure; and pointing out each kind of formula limitation and the applicable scope. At the same time introduced the general formula of horizontal earth pressure of the buried culvert.2. Elaborating the finite element analysis principle, the method and the step, deducting main formula of the finite element analysis which used in high filled in the culvert embankment. Using the finite element method to calculate the size of different depth about fill arch culvert, the circular pipe slab culvert, the lap contains separately, based on the model building. Obtain each kind of stress character of structure pattern culvert under the different operating mode.3. Combining finite element stress cloudy chart and the finite element computed result of the different structure pattern culvert control cross section link and carrying on the analysis to the different operating mode which is under circumferential stress and the control...