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型钢水泥土搅拌墙在基坑工程中有着广泛的应用,现有的实验方法主要用小尺寸梁,单点集中力加载并用应变片测量应变数据的方法,无法很好的模拟型钢水泥土搅拌墙的现场情况。本文主要对型钢水泥土搅拌墙的室内实验方法进行了研究,制作外部尺寸为300*600*2 000 mm型钢水泥土组合梁大尺寸实验模型,采用弹簧组件对组合梁施加均布荷载,利用分布式光纤采集梁加载过程组合梁的应变数据。该方法可以更加准确的模拟了型钢水泥土搅拌墙在基坑开挖过程中的受力状态,并获取连续的应变数据。
Steel-concrete mixing wall in the pit engineering has a wide range of applications, the existing experimental methods mainly with small beams, single-point concentrated load and strain gauges strain gauge method, can not be a good simulation of steel cement mixing wall The scene. In this paper, the laboratory experimental research on steel-concrete mixing wall has been carried out. The large-scale experimental model of 300 × 600 × 2 000 mm steel-cement composite beam with external dimensions is made. The uniform load is applied to the composite beam by the spring assembly. Strain data of optical fiber composite beam during loading process. The method can more accurately simulate the stress state of steel-concrete mixing wall in excavation process and obtain continuous strain data.