在工字钢架上钻孔施作超前支护的技术研究

摘要

It is very universal to drill in the steel frame to do the advance support, many engineers are in favor of this technology, but many others query it because of the stiffness seduction. This paper gave a feasibility analysis by simulating the steel frame deformation under different load conditions.%根据近几年在广昆线、武广线配合施工的工作实践及其他线施工状况的调查,目前施工单位在工字钢架上钻孔施作超前支护的现象比较普遍,很多工程师对此做法表示赞成,也有很多工程技术人员对此提出质疑,认为对钢架的强度影响较大,本文通过不同荷载工况下对钢架的变形进行分析,得出该工艺在工程领域应用的可行性.