单层网壳结构卸载过程计算分析与实时监测

Numerical simulation and monitoring of unloading process of a single-layer reticulated shell

对某大跨度空间钢结构体育馆施工中的结构体系转换步骤进行了全过程数值模拟,并在卸载过程中采用应变计、全站仪、GPS及加速度传感器等进行了关键点位移和杆件的内力监测。通过与数值分析结果对比说明了模拟方法的可行性,对GPS技术在大跨度空间结构施工监测中的应用进行了论述。结果可为类似结构的模拟与监测提供依据。

A numerical simulation of the structural system transformation process in construction of a long-span space structure was carried out,and instruments as strain gauge,total station,GPS and accelerometer were used to monitor the displacement and internal force during unloading stage.Through comparison between measured results and numerical analysis,the suggested simulation method was proved to be reasonable.Then the application of GPS technology in long-span space structure construction monitoring was discussed.The conclusion can provide the basis to the simulation and monitoring of similar structures.