考虑上下协同工作大跨度储煤结构的抗震性能  

Seismic response analysis of big span structure for coal storage considering cooperative work between upper structure and infrastructure

作　　者：杜平[1] 刘书贤[1,2] 王伟[2] 张景太 王泓懿 

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]辽宁工程技术大学建筑工程学院,辽宁阜新123000 [3]阜新四方建设工程有限公司,辽宁阜新123000 [4]阜新宇城建筑设计有限公司,辽宁阜新123000

出　　处：《广西大学学报（自然科学版）》2013年第1期9-15,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51174038);辽宁省教育厅科学技术研究项目(L2012111);中国煤炭工业协会科学技术研究指导性计划项目(MTKJ2012-319);辽宁工程技术大学市场调研信息立项基金(SCDY2012010)

摘　　要：为了研究多维地震作用下大跨度储煤结构的振动特性,通过对考虑上下部协同工作的双层网壳结构进行了多维地震响应分析,对比分析双层网壳结构在单维地震与多维地震动作用下的动力响应的差别,分析结果表明:采用一致地震激励的方法进行大跨度网壳结构的动力分析是不够完善的,在进行前期工程设计时,大跨度空间结构其上下协同工作的特性不容忽视,在多维一致地震作用下,整体结构的各杆件内力响应整体大于网壳结构,下部支承结构附近的节点位移和杆件内力变化较大;多点地震激励下的整体结构的杆件内力响应整体小于一致激励,当视波速取值较大时,杆件内力与一致激励较接近。可为今后类似大跨度空间结构工程参考和借鉴。In order to investigate the vibration character/stics of big span structure for coal storage, the multidimensional seismic response analysis of double-layer reticulated shell was conducted with consideration of the cooperative work between upper structure and infrastructure. Through the com- parative analysis of the difference of the dynamic response of double-layer reticulated shell between the integrated and multi-dimensional earthquakes, it was found that the consistent earthquake incen-tive method which is used for the dynamic analysis of latticed shell structures was not perfect. In predesign, the cooperative work between the upper structure and infrastructure of latticed shell struc- ture should not be neglected. In multi-dimensional earthquake, the internal force response of each link is greater than that of the entire structure, and the nodal displacement and internal force of the bar of the lower bearing structure change greatly. The internal force response of each link of the en- tire structure under the excitation of muhipoint earthquake is smaller than that of the structure under uniform excitation. When the value of apparent velocity is larger, the internal force response of each link of the entire structure under the ture under uniform excitation. The structure engineering in the future. excitation of muhipoint earthquake is closer to that of the struc- conclusions can provide reference for similar long-span space

关 键 词：网壳结构 数值分析 协同工作 多维地震 大质量法 

分 类 号：TU352.1[建筑科学—结构工程]