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MEASURED STUDY ON VERTICAL DEFORMATION OF A TALL STEEL REINFORCED CONCRETE FRAME-CORE WALL STRUCTURE DURING CONSTRUCTION
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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40710－6，剪力墙最大达35910－6，竖向变形在混凝土14d龄期前发展较快，14d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14d龄期后，当施工循环周期稳定时，竖向变形接近线性发展。Abstract: Using project measurement of an actual, it is examined the vertical deformation of a tall steel reinforcedconcrete frame-core wall structure during construction． The results show that there is a difference in deformationmagnitude between the steel and concrete in steel reinforced concrete columns, and that deformation compatible timebetween concrete and steel is associated with the concrete strength grade: the higher the concrete strength grade, thelonger the time for deformation compatibility． The maximum value of column vertical deformation is 40710－6 , andthe maximum value of shear wall vertical deformation is 35910－6 ． The rate of vertical deformation is faster withinthe initial 14 d; and the ratio of vertical deformation to total deformation after finishing the construction of 42 floors forthe column and shear wall is about 0. 35 and 0.34, and follows a linear relation thereafter．
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