| In recent years,the pre-stressed anchor cable pile-slab wall structure has been used more and more widely in slope support,but there are still many problems in the design and construction of the pile-slab wall structure,such as the single method of designing and calculating the internal force of the structure,structural rigidity and strength Insufficiency leads to various diseases during the use stage.In order to optimize the design method of the slab wall structure and improve its performance,this article mainly describes the existing design method of the pile slab wall structure,and then combines the design and construction of the prestressed anchor cable pile slab wall structure of Binjiang South Road in Xiangtan City.A design method that combines theoretical calculations and finite elements.The specific research content and conclusions of this article are as follows.(1)First,extensive literature research was conducted to summarize the research background and significance of the prestressed anchor-pile-slab wall,and expound the definition,characteristics,use conditions and classification of the anchor-pile-slab wall.Then it introduces the current research status of pile-slab walls at home and abroad in recent years.At present,many scholars have carried out extensive research on pile-slab walls,and the results are quite fruitful.Complexity,the existing calculation methods are still unable to accurately obtain the internal force and deformation of each part of the structure.Therefore,it is necessary to conduct an in-depth study on the subject.(2)Introduced the design method of pile-slab wall commonly used at present.The built-in section and free section of the anti-slide pile adopt m method and K method to calculate the internal force and deformation of the pile body;the retaining plate is regarded as a hinged structure at both ends for design calculation.The background,basic ideas and steps of solving Winkler elastic foundation beams are summarized,and three calculation methods based on Winkler foundation beam theory are compared.(3)Taking the pile-slab wall of Binjiang South Road in Xiangtan as an example,two methods of theoretical calculation and finite element simulation were used to calculate the internal force and deformation of the pile-slab wall structure.The results show that the maximum bending moment and shear force of the pile calculated according to the landslide thrust and Coulomb’s earth pressure have a certain difference.The maximum bending moment of the pile calculated by the finite element method and the theoretical calculation have an error of 3.9%.Therefore,this paper recommends using a variety of methods to calculate the internal force of the structure in the design stage,taking into account the differences of different calculation methods,to ensure sufficient safety reserves of the structure. |
