超高层结构施工竖向变形规律及预变形控制研究  

RESEARCH OF VERTICAL DEFORMATION AND PREDEFORMATION OF SUPER HIGH-RISE BUILDINGS DURING CONSTRUCTION

作　　者：王化杰[1,2] 范峰[1] 支旭东[1] 黄刚 祝恩淳[1] 王宏 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]哈尔滨工业大学(威海)土木工程系,威海264209 [3]中建三局建设工程股份有限公司,武汉430064

出　　处：《工程力学》2013年第2期298-305,312,共9页Engineering Mechanics

基　　金：国家"十一五"科技支撑项目(2006BAJ01B02);哈尔滨工业大学优秀青年教师培养计划项目(HITQNJS;2007029)

摘　　要：为了掌握超高层结构施工竖向变形累积规律,提出合适的施工预变形分析方法。该文对国内3个400m以上典型超高层结构进行施工全过程仿真研究,开发标准化施工仿真建模方法,综合时变结构离散分析法、龄期调整有效模量法、单元生死、位型控制、分步加荷等关键技术对材料时变,几何时变、边界条件时变进行模拟,形成完整的超高层结构施工全过程仿真技术,得到了不同工况下超高层结构施工竖向变形规律。在此基础上,采用阶段位移补偿法,以竖向位移、框筒内外相对变形为控制目标,建立超高层预变形分析方法,得到了结构施工过程中各层标高预调值,为该类结构的施工变形控制提供了理论依据。To attain vertical deformation rules for a super high-rise building during the construction and to set up a practical construction simulation method and technology of pre-deformation controlling, the construction full-process analysis of three typical high-rise buildings over 400m high in China were made. The discrete analysis method of a time-varying structure, the age-adjusted effective modulus method, the element birth and dead and technology of stepwise loading were used simultaneously to carry out the simulation of time-varying material, time-varying geometry parameters, time-varying loading and boundary conditions, a systematic technology of simulation of construction process for a super high-rise building was exploited, and the vertical deformation rules were obtained. Furthermore, a pre-deformation analysis method for a super high-rise building was achieved with deformation compensation stepwise. The total vertical displacement and relative deformation between core tube and steel frame were made as the controlling target in the method, which could give vertical pre-deformation values and provide a theoretical support for construction deformation controlling of super high-rise buildings.

关 键 词：竖向变形累积 施工仿真 龄期调整有效模量法 超高层 预变形 

分 类 号：TU973.12[建筑科学—结构工程]