Numerical Simulation Analysis of Reinforcement of a Foundation Pit Tower Crane Installation Station

在目前的加固技术中，型钢转换钢梁替代混凝土支撑梁被广泛应用。以临近武汉长江隧道的某基坑项目为研究对象，采用岩土、隧道结构专用有限元分析软件MIDAS/GEN 2020，对该基坑施工过程中的型钢转换钢梁替代混凝土支撑梁的施工工况进行模拟和受力分析，得到塔吊的工作荷载传到型钢转换钢梁上，再传到钢立柱上各构件的变形及应力情况，并进行分析，得出模型的建立是合理可行的。In the current reinforcement technology, the steel beams to replace the concrete support beam for steel beams are widely used. Taking a foundation pit project near the Wuhan Yangtze River Tunnel as the research object, the MIDAS/GEN 2020 special finite element analysis software of geotechnical and tunnel structures is adopted is adopted for the simulation and force analysis. The working load of the tower crane is passed on to the steel beams, and then passed on to the deformation and stress of each component on the steel pillars. It is also analyzed to obtain the establishment of the model reasonable and feasible.