Assessment on double anchor construction project of subgrade retaining wall on slope and its parameters optimization with numerical simulation

Retaining wall on slope is a structure very difficult to construct and easy to failure.Combined with a filled and excavated subgrade construction of section K59+470～K59+630 of Qixia-Laixi Expressway in Shandong Province,a double anchor construction project was put forward.The parameters of the construction was studied and optimized by use of numerical simulation methods.At the same time,the behaviour of typical section of the project was assessed.It was shown that the subgrade remained stable under static and dynamic load,and the project could meet the requirement of the relative criteria and expected effect was obtained.The inspection results after the construction showed that the retaining wall was stable,and the technique of double anchor construction project could be used as a reference for similar projects.