超高层建筑施工过程结构竖向变形的研究现状

An Overview of the Research on Structural Vertical Deformation Occurred in the Construction Process of High-rise Buildings

近年来,中国掀起了超高层建筑的建设热潮,全国已有百余座300m以上的建筑建成或正在施工中。对于超高层建筑,施工过程中结构的竖向变形会带来许多问题。目前,业界对此问题非常关注,也有许多学者对此进行了研究。本文系统总结了对超高层建筑施工过程结构竖向变形问题的相关研究,包括理论研究和工程实例研究两部分。首先,总结各类影响施工期竖向变形的因素及其计算方法,并分析了以往学者提出的几个竖向变形理论计算公式的前提假设、影响因素考虑、计算精度、复杂程度等。其次,总结对比了目前工程实例研究中常用的有限元模拟方法及现场监测方案,并将几个知名工程的有限元与实测结果进行比对。然后,对国内相关规范中与施工期竖向变形相关的规范进行了梳理。最后,根据对现有研究的总结分析,提出现有研究存在的问题及亟待进一步研究的方向。

In recent years,high-rise buildings have been new trends in China and there have been hundreds of buildings higher than 300 m built interiorly. In the construction of high-rise buildings,the vertical deformation of the main structure would cause many problems and have attracted attentions of many researchers. This paper summarized theoretical research and case studies on the vertical deformation problem systematically. At first,all kinds of factors that affected vertical deformation in construction period and the methods to calculate their influences were generalized. Based on these,some methods to calculate the vertical deformation value were analyzed, including their presupposition,considered factors,precision and complexity. Then,the FE methods to simulate construction process of actual structures and on-site monitoring schemes were presented. Meanwhile,a few case studies on some famous high-rise buildings were introduced. Moreover, the standards about vertical deformation in construction process in China were teased out. Above all these analyses,the problems existing in present researches were summarized and next research directions were proposed.