摘要
Abstract
During construction of multi-layer composite structures in deep and large metro foundation pits,common challenges included low formwork installation efficiency,difficulty in controlling concrete surface quality,and high safety risks associated with scaffold systems.Taking the open-cut internal of an entrance and exit line for a double-decker underground metro parking lot in the southwestern region as a case study,this paper adopted a combined formwork system integrating prefabricated integral formwork with socket-type disk-lock scaffolding.Key processes and technical parameters were optimized and summarized,such as support system design,formwork prefabrication,overall lifting and positioning,scaffold reinforcement and dismantling,and deformation monitoring.The results show that,on the premise of ensuring the safety and stability of construction operations throughout the deep foundation pit excavation process,this combined formwork system can significantly improve the efficiency of formwork installation,effectively improve the quality of concrete molding.关键词
地铁停车场/地下双层/明挖基坑/预拼装/组合支模/施工监测Key words
underground parking lot for the metro/underground double-deck/open-cut foundation pit/test assembling/combined formwork system/construction monitoring分类
建筑与水利
