地下连续墙钢筋笼吊装设计与施工关键技术研究

Study on the Hoisting Design and Construction Technology of Steel Cage for Underground Continuous Wall

以杭州地铁10号线一期工程吴家路站和新兴路站地下连续墙施工为背景,对超长超重钢筋笼吊装施工中的吊装系统确定、主要吊重设备选型、钢筋笼桁架优化设计、钢筋笼吊装姿态及体系转换控制点等技术进行研究和实践数据对比。对8,12,16点等多种吊装系统进行对比分析,制定适用于不同类型钢筋笼的吊装系统及设备选型,从而提高施工效率,保证超规模危大工程可安全、经济、高效完成。通过实践数据,明确测算过程中部分经验参数的取值,为后续地下连续墙技术准备和现场施工提供依据。根据吊点布置优化钢筋笼纵向和横向桁架,提高技术经济性。在竖向转体和吊装系统转换过程中对比受力情况与设计方案,保证施工安全、高效。

In the first phase of Hangzhou subway line 10,Wujia road station and Xinxing road station,of the underground continuous wall construction as the background,the hoisting construction determination of super-long overweight reinforcing cage,main hoisting equipment type selection,reinforcing cage truss optimization design and system transformation,reinforcing cage hoisting control points is researched and compared.The various hoisting systems such as No.8,12 and 16 point are carried out comparative analysis,the hoisting system and equipment selection suitable for different types of steel cages is formulated,the construction efficiency can be improved to ensure the safety,economy and efficiency.Through practical data,the values of some empirical parameters in the process of calculation are clarified,it provides basis for technical preparation and site construction of underground continuous wall.The longitudinal and transverse trusses of the steel cage are optimized according to the arrangement of the lifting points to improve the technical economy.In the conversion process of vertical rotating body and hoisting system,the stress situation and design scheme are compared to ensure the safety and efficiency.