钢筋桁架混凝土组合楼板在正常使用阶段的短期刚度研究

Study on short-term stiffness of concrete composite slabs with rebar truss at service ability limit state

钢筋桁架模板近年来较多应用于工程实践中,用以解决施工上的困难,对钢筋桁架混凝土组合楼板在正常使用阶段的短期刚度进行了研究。以正交分析法进行了试验,根据试验数据,采用有效惯性矩法推导出了短期刚度的计算公式,计算出的理论挠度值与试验实测值较为吻合,可以为这类钢筋桁架混凝土组合楼板的设计提供参考。

The rebar truss framework is nowadays widely used in the engineering practice to solve the construction difficulities.The short-term stiffness of concrete composite slabs with rebar truss at service ability limit state was studied. The tests were conducted based on the orthogonal analysis method,the calculation formulas of the short-term stiffness were derived using the effective moment of inertia method based on the test data,the calculated deflections agreed well with the test results.Therefore,the proposed design rules could provide references for the design of concrete composite slabs with rebar truss.