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一、概述 设计装配式结构时,加强构件间的共同工作,使单跨简支构件变成装配整体式超静定结构,能提高其承载力、刚度和抗裂度。 实践证明,保证结构良好的整体性和装配接头的连续性,必须研究装配与整浇部分新旧混凝土接触面的弯曲强度,使构件接头能可靠的传递荷载,且考虑结构应变状态下混凝土收缩和蠕变影响。
I. Overview When designing a prefabricated structure, the joint work between the components is strengthened so that the single-span simply-supported component becomes an assembled monolithic statically indeterminate structure, which can increase its bearing capacity, stiffness, and crack resistance. Practice has proved that to ensure a good structural integrity and the continuity of assembly joints, it is necessary to study the bending strength of the contact surface of the new and old concrete parts of the assembly and casting, so that the component joints can reliably transmit the load, and consider the concrete contraction and creep under the state of structural strain. Change effect.