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针对叠合式双向楼板拼缝存在使截面刚度减弱尚无弯矩、挠度有效计算方法的实际情况,采用ABAQUS软件建立叠合式双向楼板分析模型,根据弹性理论探讨叠合式双向楼板跨中弯矩、挠度的变化规律。采用定量计算和定性分析的方法,将四边简支的叠合式双向楼板与现浇双向楼板的受力情况进行对比分析。结果表明:叠合式双向楼板长向刚度减弱,长向抗弯能力减小,短向抗弯能力增大;叠合式双向楼板短向弯矩值增加,长向弯矩值不予折减仍按现浇双向板弹性理论配筋;弹性理论计算结果、ABAQUS软件模拟结果和试验测得数据吻合较好,可为同类楼板的研究和工程应用提供参考。
Aiming at the actual situation of effective method to reduce the stiffness of section without any bending moment and deflection, the ABAQUS software was used to establish the laminated two-way floor analysis model. According to the elasticity theory, the bending moment, deflection The law of change. By means of quantitative calculation and qualitative analysis, the contrastive analysis of the bi-directional laminated floor and the cast-in-place two-way floor with simple support on four sides is carried out. The results show that the longitudinal stiffness of the two-way laminated floor is weakened, the long-term bending resistance is reduced and the short-time bending capacity is increased. The short-time bending moment of the double-direction laminated floor increases, while the long- In-situ two-way plate elastic theory of reinforcement; elastic theory calculation results, ABAQUS software simulation results and experimental data agree well, which can provide reference for the research and engineering application of similar floor.