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针对目前现浇混凝土空心楼盖优化设计研究中造价计算不准确的困境,本文提出了基于结构承载能力和裂缝宽度控制的实用弹性应力配筋法,并据此提出了包含空心楼盖造价、承载能力极限状态和正常使用极限状态的优化设计模型及对应的优化设计方法。单层地下室顶板空心楼盖的优化设计结果表明,该优化设计方法的优化结果可显著降低空心楼盖造价和弹性挠度,并为解决空心楼盖参数优化设计提供了一条有效途径,并且考虑了裂缝宽度控制的实用弹性应力配筋法也可广泛应用于复杂混凝土结构的配筋计算。
To solve the problem of inaccurate cost calculation in the optimization design of cast-in-situ concrete hollow floor, this paper proposes a practical elastic stress reinforcement method based on structural load-bearing capacity and crack width control, and proposes the construction cost and load of hollow floor covering accordingly. The optimal design model and the corresponding optimal design method for the limit state and normal use limit state. The optimization design results of the hollow floor of the single-layer basement roof show that the optimization results of the optimization design method can significantly reduce the cost and elastic deflection of the hollow floor, and provide an effective way to solve the parameter optimization design of the hollow floor, and consider the cracks The width-controlled practical elastic stress reinforcement method can also be widely applied to the calculation of reinforcement in complex concrete structures.