钢筋混凝土双向板肋梁楼盖挠度计算方法研究

对现浇钢筋混凝土双向板肋梁楼盖中的中区格板、边区格板和角区格板,分别进行了均布荷载作用下的静力加载试验,测试了梁板的挠度值;考虑区格板边界支承条件的影响,建立了双向板挠度计算公式,并将公式的挠度计算值与试验值进行比较。结果表明:按线弹性理论所得的挠度值与试验值之间存在较大误差;按挠度计算公式计算所得挠度值与试验结果比较吻合。

CALCULATION METHOD FOR DEFLECTION OF REINFORCED CONCRETE TWO-WAY SLAB-AND-BEAM FLOOR SYSTEM

For the interior slab,the edge slab and the corner slab of cast-in-situ reinforced concrete two-way slab-and-beam floor system,it was carried out the static loading test under uniformly distributed load respectively,and metered the beams and slabs deflections of three slabs.Through considering the influence of boundary supporting condition,the deflection calculation formulas of three typical slabs of two-way slab were established,and comparing the deflection values calculated by the formulas to the experimental results.The results showed that under uniformly distributed load the two-way slab deflections at the midspan section calculated by elastic thin plate theory differed significantly from the test results,and the deflection values obtained by the deflection calculation formulas in this paper matched well with the test results.