| Reinforced earth abutment is very popular in Europe and the United States in recent years because It looks beautiful and cost less.In addition It has less bridge settlement and shorter bridge length.America construct more than one hundred reinforced earth abutments every year which have all kinds of outward appearance and match the environment perfectly,So America has the mature technology and experience.At present the reinforced earth retaining wall is widely used in our country but the reinforced earth abutment is rarely used and the related research and experiments are only in the preliminary stage,so there are many key problems to be studied and solved in the use of technology about reinforced earth abutment.This paper by reference to domestic and external theory about reinforced earth structure design and structure of the domestic bridge will summarize the suitable design theory and calculation method of reinforced earth abutment of Shenshan railway bridge;Through the comparison of the reinforcement material to choose suitable material for reinforced earth abutment and do tests on reinforced materials and fillings,confirm structural calculation parameters;This paper will calculate the internal stability and external stability of reinforced earth abutment,to get the suitable structure scheme of reinforced earth abutment.according to the construction technology the Shenshan railway bridge is constructed,through the static load test and overall deformation observation,This paper verify the safety of the abutment structure.So this paper figure out the method to comfirm friction coefficient between reinforced materials and fillings and other factors which affect the friction coefficient,reinforced earth abutment structure calculation method and structure scheme,Key points of construction technology control through the success of reinforced earth abutment construction.The research results in this paper provide a reference for the similar bridge engineering construction. |
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