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预应力高强砼管桩(PHC管桩)常用于桩基工程中,由于其具有施工快、造价低等特点,近年来也逐渐用于基坑支护工程中。双排桩是一种空间桁架结构,刚度大,控制变形能力强,可以不设内撑,挖土方便,常用桩型为钻孔灌注桩。双排高强预应力砼管桩是一种新型的基坑围护结构,可以充分发挥高强预应力砼管桩和双排桩的优点。本文结合溧阳文化公园及数码广场基坑工程实例,介绍了双排高强预应力砼管桩在基坑支护工程中的应用。
Prestressed high-strength concrete pipe pile (PHC pipe pile) commonly used in pile foundation engineering, because of its fast construction, low cost, in recent years has also gradually used in foundation pit support engineering. Double-row piles are a type of space truss structure with high rigidity and strong control deformation ability. It is not necessary to provide internal support and excavation is convenient. Common pile type is bored pile. Double-row high-strength prestressed concrete pipe pile is a new type of foundation pit retaining structure, which can give full play to the advantages of high-strength prestressed concrete pipe pile and double-row pile. In this paper, combined with the Liyang Cultural Park and Digital Plaza Foundation Pit engineering examples, introduced the double-row high-strength prestressed concrete pipe pile foundation pit supporting engineering application.