对施工阶段套建增层巨型框架的内力分析  

Analysis on internal force of outer-jacketing mega frame for story-adding during construction

作　　者：孙绪杰[1] 郑文忠[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2009年第6期16-21,117,共7页Journal of Harbin Institute of Technology

基　　金：教育部新世纪优秀人才支持计划资助项目(教技司[2005]290号);黑龙江省科技攻关项目(GC04A609);哈尔滨市科技攻关计划项目(2004AA9CS187)

摘　　要：为了解传统的分析方法在施工阶段套建增层巨型框架内力计算中的误差,找出合理的分析方法,并了解不同施工方法对构件内力的影响,以一个典型套建增层巨型框架为例,利用有限元分析方法,分别采用三种分析方法分析了三种施工方法条件下构件在施工阶段的内力变化.采用不同分析方法计算构件施工完成时刻内力值,按传统方法分析时,计算值的误差较大;按简单模拟施工的方法进行分析,在很大程度上能够改善传统分析方法不合理的情况.对不同的施工方法而言,采用逐层施工法时,构件在施工中产生的内力峰值与施工完成后的内力终值相差悬殊,采用巨梁层自承重施工法和主次施工法时,构件的内力峰值与内力终值接近.To find out reasonable analysis methods to decrease the error produced in calculating the internal force of outer-jacketing mega frame for story-adding during construction, and study the influence of different construction methods on the internal force of member, taking a typical outer-jacketing mega frame for story- adding as an example, its internal force of member was analyzed adopting three analysis methods and three construction methods by using Finite Element Method. The analysis results show that, more errors are produced in calculating the internal force of member using traditional methods when the construction is completed, and better calculation result can be obtained by the simple simulation construction method. The peak value of internal force of member obtained during construction is quite different from the final value obtained after the construction is completed using story-by-story method. The peak value of internal force of member and the final value are approximate using self-supporting huge-beam-story and the primary and secondary construction methods.

关 键 词：巨型框架 套建增层 控制内力 施工方法 误差分析 

分 类 号：TU973[建筑科学—结构工程]