146m长双段双层双拼钢支撑应用与研究

The application and research of 146-meter-long-double-section and double-layer duplex steel support

新型H型钢钢支撑在工厂预制生产,现场拼装简便且无需养护,承载力高,安全隐患小,应用钢支撑基坑实时无线监测系统和钢支撑自动伺服系统,在施工精度控制、节点构造和施工组织等方面提高了钢支撑施工质量。H型钢钢支撑可周转循环利用,制作简便、绿色环保、易装易拆,使用寿命高达20 y,无建筑垃圾产生,是混凝土支撑的良好替代品,必将成为未来深基坑内支撑的发展趋势。

The new H-shaped steel brace is prefabricated in the factory,which is easy to assemble and needs no maintenance,and has high bearing capacity and small hidden danger.It uses the real-time wireless monitoring system and automatic servo system of steel brace foundation pit and improves the construction quality of steel brace in construction precision control,node structure and construction organization.H-shaped steel braces can be recycled,with easy making,greening,installing and disassembling.The service life is up to20years.They have no construction waste,and are good substitutes for concrete braces.Their use will become the development trend of deep foundation pit braces in the future.