高层建筑停建续建施工变形分析
作者简介:
陈晓旭,硕士,讲师,E⁃mail:719879187@ qq. com
作者单位:
1.广东白云学院,广东广州 510450; 2.中信环境技术(广州)有限公司,广东广州 510000;3.中建五局第三建设有限公司,湖南长沙 410004; 4.广州大学,广东广州 510006;5.深圳市联博建筑工程技术有限公司,广东深圳 518000
基金项目:
∗国家自然科学基金( 51925802, 52378497 );中建集团课题(CSCEC5B⁃2021⁃20)
摘要:
根据结构组划分层数、停工时间、是否考虑混凝土收缩与徐变效应建立不同的施工模型,对比分析停建续建高层建筑竖向变形规律,并对竖向变形影响因素进行分析。研究结果表明,停建续建建筑竖向变形分布规律与非停建建筑有所不同,停建续建建筑已建结构最高处变形达最大值,而续建结构变形呈两端小、中间大的分布规律。在不同层数组成结构组的条件下,随着结构组内划分层数的增加,高层建筑竖向变形理论计算结果误差越大,且误差与所处结构组内位置有关,处于结构组越低的位置,竖向变形理论计算结果越接近基准值。

English:
Based on the structural groups division layers, downtime and whether the effects of concreteshrinkage and creep are considered, different construction models are established. The verticaldeformation law of tall buildings with suspended and continued construction is compared and analyzed,and the influencing factors of vertical deformation are analyzed. The research results show that the verticaldeformation curves of buildings under suspended and continued construction as the number of layersincreases differs from that of non⁃suspended buildings. The maximum deformation occurs at the highestpoint of the existing structure of the suspended and continued construction buildings,while thedeformation of the continued structure shows a distribution pattern of smaller at both ends and larger inthe middle. Under the condition of different structural groups composed of various numbers of layers, asthe number of structural groups division layers increases, the error in the theoretical calculation results ofvertical deformation becomes larger, and the error is related to the position within the structural groups.The lower the position within the structural groups, the closer the theoretical calculation result of verticaldeformation is to the reference value.