自平衡预应力索杆球面网壳结构地震反应特性分析  

Seismic response characteristic analysis of self-balanced pre-stressed spherical shell structure

作　　者：李国东[1] 林德全[2] 刘晚成[1] 辛宝柱 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080 [3]呼伦贝尔市公路工程质量监督站,内蒙古呼伦贝尔021008

出　　处：《世界地震工程》2015年第2期87-94,共8页World Earthquake Engineering

基　　金：中央高校基本科研业务费专项资金资助项目(DL11BB05);国家自然科学基金资助项目(51008054)

摘　　要：单元拼装式自平衡预应力空间网壳具有连续拉和间断压的空间受力特性,其地震作用下的可靠性和性态规律尚不明确。以100跨凯威特K6型双层网壳为研究对象,选用梁元和索元的混合有限元模型,进行了三向Kobe地震动作用下结构非线性地震反应分析。针对结构地震响应的主要影响参数,对网壳结构的地震响应规律进行了研究,获得了网壳结构的地震反应规律。分析结果表明,结构具有良好的抗震性能,网壳的矢跨比和拉索预应力是抗震设计的主要控制参数。Self- balanced pre -stressed shell structure assembled with elements and the mechanical characteristics of ＂continuous pressure, intermittent pull＂, its reliability and state of the rules under Earthquake is unclear. The combined finite element model of beam elements and cable elements is selected, and the seismic analysis is carried out by method with inputting the three dimensional Earthquake Kobe for a 100m span Kiewitt （K6） double - layer grid lattice spherical shell.＂ In addition, the rules of seismic response are system studied by means of changing the main parameters of structure, and the rule seismic response of latticed shell was obtained. Finally, the results indi- cate that the structure has good seismic performance. The rise - span ratio and the cross section area of cables are the main control parameters for seismic design.

关 键 词：网壳结构 自平衡 预应力 抗震性能 

分 类 号：TU359[建筑科学—结构工程]