轮辐式索膜结构连续倒塌性能分析

发布时间：2018-04-28 00:56

本文选题：轮辐式索膜结构 + 连续倒塌　；参考：《振动与冲击》2015年20期

【摘要】：以佛山世纪莲体育中心为工程背景,通过定性模型试验测试及原型结构有限元分析,系统研究不同构件断裂情况下轮辐式索膜结构动力响应及连续倒塌性能。结果表明,该轮辐式索膜结构主要构件重要性由小到大依次为悬挂索、腹杆、下压环、上压环、墩柱、分叉索、脊索、谷索、内环索;重要构件断裂造成的破坏程度由轻到重依次为一根谷索断裂、一根脊索断裂、两根相邻谷索断裂、两根相邻脊索断裂、墩柱断裂、两根相邻索断裂、三根相邻索断裂、内环索断裂;该结构具有较好的抗连续倒塌能力,重要杆件裂后,能将其承担的荷载迅速传递给相邻构件,较好地将坍塌部分限制在有限区域内;通过采用双索体系、分区域设计及多柱式墩可提高结构抗倒塌能力。
[Abstract]:Based on the engineering background of Shilian Sports Center in Foshan City, the dynamic response and continuous collapse performance of spoke cable-membrane structures under different fracture conditions were systematically studied by qualitative model test and finite element analysis of prototype structures. The results show that the importance of the main components of the spoke cable-membrane structure is the suspension cable, the web bar, the lower pressure ring, the upper pressure ring, the pier column, the bifurcation cable, the notochord, the valley cable and the inner ring cable. The degree of failure caused by the breakage of important components from light to heavy is in the order of one cereal cord, one chord, two adjacent valley cables, two adjacent chordes, pier column, two adjacent cables, three adjacent cables, two adjacent cables, three adjacent cables, two adjacent cables and three adjacent cables. The inner ring cable fracture, the structure has better ability to resist the continuous collapse, after the important members crack, it can quickly transfer the load it bears to the adjacent members, and better limit the collapse part in the limited area; by adopting the double cable system, Regional design and multi-column pier can improve the collapse resistance of the structure.
【作者单位】：长安大学建筑工程学院;招商局地产控股股份有限公司;佛山市建筑工程质量检测站;
【基金】：国家自然科学基金(51308065) 博士学科点专项科研基金项目(20130205130001) 中国博士后科学基金项目(2012M511956,2014T70896) 中央高校基本科研业务费专项资金项目(2014G2280014)
【分类号】：TU312.3;TU399

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