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1、缘由支撑基坑侧壁的方法,大致可分为用横撑的施工法与用土锚杆的施工法(本文称后者为锚杆施工法)。在我国,现时大部采用横撑施工法。但由于对操作的机动性与对缩短工期的要求,可以予料在大规模开挖工程中,用锚杆施工法的工程实例将可能增加。对用横撑施工法建筑的挡土建筑物动态与设计方法,近年来已积累了大量观测数据,从而按经验制定了有关标准。
1. The reason that the method of supporting the sidewall of a foundation pit can be broadly divided into the construction method using a cross brace and the construction method using a soil anchor rod (the latter is referred to as the anchor rod construction method). In our country, most of the current cross-bracing methods are used. However, due to the flexibility of the operation and the requirement of shortening the construction period, it can be expected that in the case of large-scale excavation, the construction example of the construction method using bolt will probably increase. In recent years, a large number of observation data have been accumulated on the dynamic design of retaining structures with the construction method of bracing, so that the relevant standards are formulated according to experience.