基于引力场的挡土墙设计方法研究与初步实验

Retaining Wall Design Method Study Based on Gravity Field Theory and Exploratory Experimentation

传统的挡土墙设计理论存在很多缺陷,其对挡土墙工作机理的解释尚有许多争议,挡土墙失效现象时有发生。根据多年来的工程实践与理论研究,结合地球引力场理论,对挡土墙的工作机理作出了新的诠释,指出挡土墙底部与接触岩土体间的摩擦力是挡土墙稳定的关键。据此,给出了挡土墙设计的基础公式,并用实例进行了验证,从计算结果来看,引力场法的计算结果比朗肯土压力法的计算结果偏大,与预埋土压力盒的监测结果较吻合,证实该方法较切合实际。

Traditional retaining wall design theory has many defects; there are lots of disputes on its retaining wall working mechanism explanation, and abatable retaining walls happening from time to time. Based on engineering practices and theoretic studies in many years, combined with Earth gravity field theory, have made new annotation on retaining wall working mechanism, pointed out the friction between retaining wall bottom and contacting rock and soil bodies is the sticking point of retaining wall stability. For reason given above, presented retaining wall design basic formula, and it has validated by case studies. From calculated results, results from the gravity field theory are on the high side than Rankine＇s earth pressure theory results, but the former is rather tally with monitoring results of planted soil pressure cells, thus demonstrated that the method is rather practical.