Research and Application of Internal Force Adjustment Construction Method of Isolation Steel Frame Structure Bearing
Hainan Jiangdong Development Building adopts high-level story isolation technology.The long-term surface pressure distribution of the design of the north arch isolation bearing is extremely uneven,which reduces the damping efficiency of the structural isolation bearing.In the construction process of the upper steel frame structure,the isolation bearing is prone to complex deformation,which is unfavorable to the structural construction control and construction safety.Based on the numerical simulation and optimization of the construction process of Jiangdong Development Building,the construction method of"temporary support-release support unloading"for the unbalanced internal force distribution of the isolation bearing is proposed.The determination method of the size of the temporary support member and the reserved deflection gap of the structure in the construction method is expounded,and the internal force variation law of the isolation bearing is analyzed.The internal force adjustment effect of the isolation bearing and the influence of the construction method on the internal force of the superstructure are clarified.
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