提高单跨框架结构抗震性能的几种方法
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摘要
单跨框架结构冗余度小,在地震中很容易形成机构并发生倒塌破坏,故在设计中应增加延性,提高其抗震性能。结合实际工程,以一工业厂房附属用房中的单跨框架结构为例,对比分析了加强抗震措施、中震弹性设计与中震不屈服设计、对结构重要部位进行包络设计三种提升结构综合抗震性能的方法。结果表明,可通过提高抗震等级和抗震构造措施以及对结构重要部位进行包络设计来有效提高结构抗震性能,对关键构件进行中震抗震设计能保证其具有较好的延性,但建筑物的整体造价会有所提高。
Due to the small redundancy of single span frame structure,it is easily forming mechanism and collapsed under the earthquake.Then,the seismic performance of single span frame structure should be improved by strengthening structure ductility.Combined with practical engineering,a single span frame structure in industrial workshop accessory occupancy as an example,three methods are proposed as follows:strengthen aseismic measures,elastic and non-yielding design under moderate earthquake,envelope design for the important parts of the structure.The comparative analysis was made in this paper,and results shows that improving seismic grade and seismic construction as well as envelope design for important part of the structure are affect measures for strengthening the structural seismic performance.Seismic design for key component of structure under moderate earthquake will ensure the good ductility;however,the overall cost of structure will be increased.
Due to the small redundancy of single span frame structure,it is easily forming mechanism and collapsed under the earthquake.Then,the seismic performance of single span frame structure should be improved by strengthening structure ductility.Combined with practical engineering,a single span frame structure in industrial workshop accessory occupancy as an example,three methods are proposed as follows:strengthen aseismic measures,elastic and non-yielding design under moderate earthquake,envelope design for the important parts of the structure.The comparative analysis was made in this paper,and results shows that improving seismic grade and seismic construction as well as envelope design for important part of the structure are affect measures for strengthening the structural seismic performance.Seismic design for key component of structure under moderate earthquake will ensure the good ductility;however,the overall cost of structure will be increased.
引文
[1]GB 50011-2010建筑抗震设计规范(2016版)[S].
[2]GB 50010-2010混凝土结构设计规范(2015版)[S].
[3]连军.单跨框架结构抗震加固与改造[J].土木建筑与环境工程2012,34(S1):25-27.
[4]范夕森,田廷磊.单跨框架结构的减震加固技术研究[J].山东建筑大学学报,2015,30(2):116-122.
[5]张盼,吴二军.某单跨框架结构抗震加固方案[J].工程抗震与加固改造,2016,38(1):125-129.
[6]邓雪松,张玉蕾,张超,等.消能立柱加固单跨框架结构原理与效果分析[J].土木工程学报,2014,47(S1):169-178.
[7]邹祖栋.中震不屈服设计内力与小震弹性设计内力比较分析[J].科学技术与工程,2012,12(36):206-207.
[8]吴善能,汤翔.几种单跨框架结构抗震加固方法的比较,四川建筑科学研究,2012,8(4):160-164.
[9]王社良.抗震结构设计[M].武汉:武汉理工大学出版社,2011.
[10]尚守平.结构抗震设计[M].北京:中国建筑工业出版社,2003.
[2]GB 50010-2010混凝土结构设计规范(2015版)[S].
[3]连军.单跨框架结构抗震加固与改造[J].土木建筑与环境工程2012,34(S1):25-27.
[4]范夕森,田廷磊.单跨框架结构的减震加固技术研究[J].山东建筑大学学报,2015,30(2):116-122.
[5]张盼,吴二军.某单跨框架结构抗震加固方案[J].工程抗震与加固改造,2016,38(1):125-129.
[6]邓雪松,张玉蕾,张超,等.消能立柱加固单跨框架结构原理与效果分析[J].土木工程学报,2014,47(S1):169-178.
[7]邹祖栋.中震不屈服设计内力与小震弹性设计内力比较分析[J].科学技术与工程,2012,12(36):206-207.
[8]吴善能,汤翔.几种单跨框架结构抗震加固方法的比较,四川建筑科学研究,2012,8(4):160-164.
[9]王社良.抗震结构设计[M].武汉:武汉理工大学出版社,2011.
[10]尚守平.结构抗震设计[M].北京:中国建筑工业出版社,2003.