Abstract
Pile-anchor retaining structures are widely used in excavation engineering. The evaluation of lateral displacements, the internal forces of piles are extremely important for the performance of the structure. Most of the existing methods are empirical, semiempirical or FEM methods, while analytic calculation methods for this evaluation are rare. This paper presents an analytic method to calculate the displacements and internal forces of anchored retaining piles based on the existing design code. In the calculation method, the singular function is applied to evaluate the effect of segmented loading on the deflection of a beam with a nonuniform cross section. The load concentration function, expressed by the singular function, can describe the segmented load and be integrated without a complicated procedure for determining the integral constants. The method is applied to a structure in Wenzhou, China, and the calculation results are compared to the field measurement results. This method is only valid for pre-failure predictions.
Highlights
Pile-anchor retaining structures, characterized by reliable sustainability, limited space occupation, convenient construction and low cost, have been widely used in deep excavation engineering in recent years
Based on analyses of more than 530 case studies on deep excavations, the empirical analysis indicated that the maximum lateral displacement and ground movements always take place in a certain section of the wall, and the retaining wall and ground movements seem to be determined by other relevant factors while the system has sufficient stiffness [1]
A semi-empirical formula was proposed based on the finite element analysis of 1032 hypothetical cases, wherein the polynomial regression method was used to calculate the maximum lateral displacement of the retaining piles [2]
Summary
Data Availability Statement: All relevant data are within the manuscript and its Supporting information files. The author that received this award is Longzhu Chen. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. There was no additional external funding received for this study
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