大跨度钢桁架结构卸载模拟及监测技术研究

STUDY ON UNLOADING SIMULATION AND MONITORING TECHNOLOGY FOR LONG-SPAN STEEL TRUSS STRUCTURE

以江苏省盐城黄淮湿地博物馆钢桁架结构卸载施工为背景,旨在通过有限元技术及基于多传感器融合的现场监测技术研究大跨度桁架结构卸载施工关键技术。研究结果表明:有限元计算结果能够获取卸载施工过程中的关键要素,为后续监测方案的设计提供参考。后续的监测结果表明,有限元方法对位移的计算结果可靠性要高于应力,与实际情况更加接近;基于多传感器融合的监测方法能够提高监测结果的准确性和远程监控效果,为桁架结构的安全性和可靠性提供了有力支撑。研究结果可为大跨度钢结构建筑的施工提供参考。

Relying on the unloading construction of the steel truss structure in Huanghuai Wetland Museum in Yancheng,Jiangsu Province,key technologies for unloading construction of large-span truss structures were studied through the finite element analysis and site monitoring based on multi-sensor fusion.According to the research results:key elements of unloading construction can be obtained with finite element calculation results,as a reference for the subsequent design of monitoring schemes.Subsequent monitoring results show that the displacement reliability of finite element calculation results is higher than the reliability of stress,which is closer to the actual situation.The monitoring method based on multi-sensor fusion can improve the accuracy of monitoring results and effect of remote monitoring,which provides a strong support for the safety and reliability of truss structures.The research results provide a reference for construction of long-span steel structures.