山西寺河矿体育馆预应力钢结构施工技术

Construction Technology of Prestressed Steel Structure in Sanxi Shihe Mine Gymnasium

晋城寺河矿多功能报告厅屋盖采用张弦结构,介绍了该工程采用单榀张弦梁在地面组装进行预张拉,采用累积滑移的方法将每榀桁架安装到位的预应力施工技术。经过大量仿真计算和方案比较分析,选用索力控制为主,伸长值控制为辅的双控原则,并对钢索张拉力、伸长值和钢结构应力及变形进行施工监测,保证了工程的顺利进行。实践表明实测结果较好的验证了理论计算结果,施工仿真计算正确可靠。

The multifunctional report hall for Sihe Mine of Jincheng is a beam string structure. Assembling on the ground and pretension for single beam string structure of this project are introduced. Trusses are installed using accumulative sliding construction methods. According to plenty of simulation calculations and analysis of scheme comparison, the control of cable force was dominated, and the control of elongation value was subsidiary. The cable force, elongation values, stress of steel structure and deformation were monitored, which ensure the progress of construction. Practices show that measurement results are verified theoretical results, which indicate the construction simulation calculations are correct and reliable.