摘要
悬挑景观长廊钢结构由三个带有中心支撑的类框筒结构和空间钢桁架结构组成,最大悬挑距离为12.6m,最大跨度为15m,同时具有悬挑距离长、水平跨度大的特点,是一个复杂的空间钢结构建筑。为了验证结构的抗震承载力,需对该结构进行地震作用分析,且由于结构体系的特殊性,部分杆件需要更高要求的承载能力。因此,采用了抗震性能化设计的方法,针对结构中不同类型杆件的重要程度,制定了抗震性能化目标,并进行了小震弹性时程补充分析、中震及大震等效弹性计算和大震Pushover分析。同时,考虑到结构本身的重要性及使用过程中的舒适性,还对结构进行了防连续倒塌设计、屈曲分析和楼板舒适度分析。结果表明,该结构具有足够的抗震承载力和冗余度,能够满足正常使用上的舒适度要求。
The cantilevered landscape corridor steel structure is composed of three frame-like tube structures with central support and space steel truss structures, which has a maximum overhanging distance of 12.6m and a maximum span of 15m. It is a complex spatial steel structure with long overhang distance and large horizontal span. In order to verify the seismic bearing capacity of the structure, the seismic action analysis of the structure is needed. And considering the particularity of the structural system, some members need higher load capacity. Therefore, the seismic performance design method is adopted. According to the importance degree of different types of bars in the structure, the seismic performance targets are formulated. Supplementary analysis of elastic time history of small earthquakes, equivalent elastic calculation of medium and large earthquakes, and Pushover analysis of large earthquakes are carried out. At the same time, considering the importance of the structure itself and the comfort of people in the process of use, the continuous collapse prevention design, buckling analysis and floor comfort analysis of the structure are also carried out.The results show that the structure not only has sufficient seismic bearing capacity and redundancy, but also can meet the comfort requirements of normal use.
作者
龙莹莹
张天平
白悦笙
郑柯
LONG Yingying;ZHANG Tianping;BAI Yuesheng;ZHENG Ke(Sichan Institute of Building Research,Chengdu 610081,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S02期616-623,共8页
Building Structure
关键词
长悬挑结构
性能化设计
PUSHOVER分析
防连续倒塌设计
屈曲分析
楼板舒适度分析
long cantilever structure
seismic performance design
push-over analysis
anti-progressive collapse analysis
buckling analysis
floor comfort analysis
作者简介
第一作者:龙莹莹,硕士,工程师,主要从事建筑结构设计、加固等工作,Email:longyingyingyy@yeah.net;通信作者:张天平,硕士,高级工程师,一级注册结构工程师,主要从事建筑结构设计、加固等工作,Email:923115721@qq.com。
