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以福州海峡国际会展中心主体结构为工程背景,对其进行抗连续性倒塌分析。基于应变能的分析原理,采用拆除构件法对主体结构进行响应分析,确定对结构承载力影响最大的关键性构件。采用变换荷载路径法对移除关键构件的残余结构进行抗连续性倒塌分析。结果表明,移除关键构件后结构竖向挠度超过设计限值,结构失去正常使用功能,但构件应力比均未超限且移除的影响局限在其受力范围内,所以结构具有良好的抗连续性倒塌能力。
Taking the main structure of Fuzhou Strait International Convention and Exhibition Center as the engineering background, the analysis was carried out on the anti-continuous collapse. Based on the analysis principle of strain energy, the disassembled component method is used to analyze the response of the main structure to determine the key components that have the greatest influence on the structural capacity. The transformation of load path method is used to analyze the residual collapse of the key components. The results show that the vertical deflection of the structure after the removal of the key components exceeds the design limit, and the structure loses its normal use function. However, the component stress ratio is not overrun and the influence of the removal is limited within the range of its stress so that the structure has good resistance Continuous collapse ability.