型钢混凝土转换梁施工阶段变形实测与计算

针对高层建筑带型钢混凝土(SRC)转换层结构,承受跨中集中荷载较大的受力特点,通过现场实测,得到SRC转换梁长期变形的规律。然后,根据徐变与收缩理论,建立了SRC转换梁长期变形的简化计算方法,通过对比分析,计算结果与现场实测值吻合较好,并表明SRC转换梁在施工阶段的实测变形中应考虑混凝土徐变与收缩的影响。

Measurement and Calculation on the Deformation of SRC Transferring Beams During the Whole Construction Process

The field measurement on the high building with the solid reinforced concrete(SRC) transferring story,which exits a big point load on the mid-span of SRC beams,has been made to discover the time-dependent deformation law of SRC transferring beams during the whole construction process.Then,based on the theory of creep and shrinkage,the simplified calculation of the time-dependent deformation is brought forward.Through the comparison and analysis,Both the effects of creep and shrinkage should been taken into account in the field measurement and the calculation results are in good accordance with the field measurement results.