大跨度曲线预应力梁精准快速施工技术研究  

Research on Accurate and Rapid Construction Technologies of Large-span Curved Prestressed Beam

作　　者：于荣俊 张育诚 徐广贤 朱文良 张浩 周蕴凡 YU Rongjun;ZHANG Yucheng;XU Guangxian;ZHU Wenliang;ZHANG Hao;ZHOU Yunfan(Jiangsu Defeng Construction Group Co.,Ltd,Zhangjiagang Jiangsu 215600 China;Suzhou Institute of Technology,Jiangsu University of Science and Technology,Zhangjiagang Jiangsu 215600 China)

机构地区：[1]江苏德丰建设集团有限公司,江苏张家港215600 [2]江苏科技大学苏州理工学院,江苏张家港215600

出　　处：《江苏建筑》2024年第3期59-62,共4页Jiangsu Construction

基　　金：张家港市科技计划项目“预制装配式再生混凝土结构新型节点连接技术研究与应用”;张家港市科技计划项目“生态宜居背景下钢渣多孔绿色建材关键技术研发与产业化”。

摘　　要：传统大跨曲线预应力梁施工难点较多,文章以苏州市某三层体育场馆项目为案例,通过动画指导专业班组施工,提前解决疑难点;还重点介绍了大跨度预应力梁钢筋BIM碰撞优化、主筋定位、应力应变控制及二次压浆等技术的应用;结论表明采用特制双向耙式可调辅架进行梁钢筋定位,可确保钢筋骨架的精准定位及安装;此外,三阶段张拉及二次压浆技术相比于传统的张拉和压浆施工工艺能有效节约人工成本和材料成本,同时还能提升预应力构件体系的牢固度和使用寿命。文章所述技术可广泛应用在大跨度预应力混凝土梁施工中。There are many difficulties in the construction of traditional long-span curved prestressed beam,taking a three-story stadium project in Suzhou as a case,by using animation to guide the construction of professional teams,the difficulties are solved in advance,and the application of technologies such as BIM collision optimization,main reinforcement positioning,stress-strain control and secondary grouting of long-span prestressed beam are also introduced.The conclusion shows that the use of special two-way rake adjustable auxiliary frame for beam steel bar positioning can ensure the accurate positioning and installation of steel bar skeleton.In addition,compared with the traditional tension and grouting construction technology,three-stage tension and secondary grouting technology can effectively save labor cost and material cost,and improve the firmness and service life of prestressed member system.The technologies described in this paper can be widely used in the construction of long-span prestressed concrete beams.

关 键 词：预应力 体育场馆 BIM 主筋定位 应力应变 多次压浆 

分 类 号：TU757[建筑科学—建筑技术科学]