Design Method Research Based On Limit State Of Anchored Wall

Anchored wall consists of the rib beam and panel and the anchors which is adapt to weak ground sill without complicated foundation treatment is efficient. It is widely and rapidly used in the construction of subgrade, tunneling, deep excavation, mine and the hydropower station for the advantage of simple construction, cost saving and safety.At present, as the design of anchored wall related to the material of soil, the variability of parameters can’t be considered by the method of safety factor. Proceeding with the method of safety factor will be obstructed our engineering development to the world which result from the Technical barriers, this paper is a part of the design method research based on limit state of retaining structures of railway subgrade. This thesis make a comprehensive study on limit state design method of anchored wall, the main studies are as follow:(1) the paper analysis and compare the design method currently used and describe the design concept based on limit state, introduce the concept of the limit state equation, under the different condition analysis the force, established the limit state equation of the anchored wall of pull out failure, yield failure, flexural failure, sheared failure, and find out the key random variables by making the sensibility analysis.(2) obtained the reliability index of the structure design the under the different condition of the limit state equation by the monte-carlo method, compared the index of design at home and abroad, recommended the reliability index, though analysis and compare the index, the resistant and load partial coefficients are obtained by the general separated method, subsequently the equation of design method were expressed, the partial coefficient will be checked.(3) at last, the initial design method based on the limit state of the anchored wall were formed, the equation of the design method were completed expressed, it would be the good foundation for the formal reform.