某屋盖网架结构使用性能检测及评定

THE OPERATIONAL PERFORMANCE TESTING AND EVALUATION OF A ROOF GRID STRUCTURE

以网架结构刚度方程所确定的荷载增量和位移增量之间的关系为依据,对某屋盖网架结构进行使用性能检测及评定。在测试准备期间,由于该地区遭遇百年一遇大雪,在总量控制原则下,对该屋盖网架结构进行加载试验,测试指定测点在雪荷载和测试荷载作用下的变形和部分杆件应力,对其使用性能进行检测和分析,为该屋盖网架工程使用性能评价提供依据。该屋盖网架结构安全性检测及评定方法对在役的大型网架结构的检测具有较好的使用推广价值。

Based on the relations between the load increment and the displacement increment determined by space grid structure rigidity equation,the operational performance testing of one space grid structure of roof was carried out.In testing preparation period,this area encountered as soon as hundred years meet the heavy snow,under the total quantity control principle,the loading testing was implemented to get the deformation and the partial member stress in the snow load and under the testing load of the measuring point of the space grid structure of roof,whose testing and the analysis of operational performance would be carried out afterword.This safety testing and the evaluation method of space grid structure of roof has the good use promotion value of testing the in-service large-scale space structures.