Research And Analysis On Double-row Piles Structure With Vertical Anchor

Double-row piles structure, which is composed of two rows of parallel reinforced concrete and connected by ring beams and coupling beams on the top piles, has emerged as a form of supporting structure in recent years. The supporting structure, with lateral Stiffness and convenient for construction, has been applied more and more in engineering. Scholars have done a lot of research on the cantilever double-row piles structure. Although research has not formed a unified calculation method, it has a good guide for practical engineering application. Currently, even if there are many successful engineering examples of this kind of supporting structure, it also greatly hindered the development of types of double-row piles structure with vertical anchor due to lack of in-depth researching. On one hand, according to research results at home and abroad in this field, this paper does some theoretical analysis, on the other hand, conducting in-depth study on the performance and its factors of double-row piles structure with vertical anchor. This paper is mainly focused on several aspects as follows:1. Summarize the current status of research and application at home and abroad about double-row piles structure and its main method of calculation,and raise questions that need further study in this field.2. Inherit and improve the existing theories and methods of calculation about double-row piles structure. In this paper, with a hypothetical shear slip surface, the double-row piles structure is divided into two parts by man-made. We analyze the force and deformation of each section, and the differential deformation of each section can be established. With derivative method,we can easily get the situation of deformation and internal forces.3. The finite element theory concerned with this paper is summarized, and 3D computation model of double-row piles structure with vertical anchor is built through MIDAS-GTS for researching the size of the vertical prestress and the imposition of time on the vertical cable to double-row piles structure. And we analyze that the force and displacement of double-row piles structure with vertical anchor is affected by soil parameters, embedded depth, excavation depth, vertical anchor layout, back row pile arrangement, the distance between two rows, and other factors.4. Analyze the impact on force and displacement of double-row piles structure with vertical anchor which is loading by the pile cap board with MIDAS-GTS.