摘要
通过工程实体测试,考察某高层型钢混凝土框架-核心筒结构在施工期间从底层混凝土浇筑后到42层结构施工完的竖向变形规律。测试结果表明:型钢混凝土组合柱内混凝土与型钢存在变形差,变形协调需要的时间与混凝土强度等级有关,强度等级越高变形协调需要的时间越长;施工期间结构竖向应变,柱最大达407×10-6,剪力墙最大达359×10-6,竖向变形在混凝土14 d龄期前发展较快,14 d前完成的竖向变形与42层施工完毕完成的全部变形的比值:柱约35%,剪力墙约34%;混凝土14 d龄期后,当施工循环周期稳定时,竖向变形接近线性发展。
Using project measurement of an actual, it is examined the vertical deformation of a tall steel reinforced concrete frame-core wall structure during construction. The results show that there is a difference in deformation magnitude between the steel and concrete in steel reinforced concrete columns, and that deformation compatible time between concrete and steel is associated with the concrete strength grade： the higher the concrete strength grade, the longer the time for deformation compatibility. The maximum value of column vertical deformation is 407 × 10^-6, and the maximum value of shear wall vertical deformation is 359 × 10^-6. The rate of vertical deformation is faster within the initial 14 d; and the ratio of vertical deformation to total deformation after finishing the construction of 42 floors for the column and shear wall is about 0. 35 and 0.34, and follows a linear relation thereafter.
出处
《工业建筑》
CSCD
北大核心
2011年第10期81-84,共4页
Industrial Construction
基金
国家自然科学基金(50978262)
国家科技支撑计划项目(2006BAJ01B02)
重庆市建设科技计划项目(城科字2010第140号)资助
关键词
高层
型钢混凝土组合结构
框架-核心筒结构
施工期
竖向变形
tall building
steel reinforced concrete composite structure
frame-core wall structure
constructionperiod
vertical deformation
