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CALCULATION METHOD FOR DEFLECTION OF REINFORCED CONCRETE TWO-WAY SLAB-AND-BEAM FLOOR SYSTEM
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摘要: 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。
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关键词:
- 现浇钢筋混凝土双向板 /
- 等效惯性矩 /
- 挠度 /
- 计算方法
Abstract: 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. -
[2] Nilson N. Design of Concrete Structures[M]. The McGraw-Hill Companies, Inc.1997:59-64,189-205. Park R, Gamble W L. Reinforced Concrete Slabs[M]. New York: John Wiley and Sons,1980:21-37. [3] Andrew Scanlon, Murray David W. Practical Calculation of Twoway Slab Deflections[J]. Concrete International,1982(11):43-50. [4] Kuan - Yung Chang, Shyh-Jiann Hwang, Associate Member, ASCE. Practical Estimation of Two-way slab Deflections[J]. Journal of Structural Engineering,1996,122(2):150-159. [5] 冯然,张先进.钢筋混凝土双向板的非线性挠度分析[J].武汉理工大学学报,2003,25(11):47-49. [6] 张先进,刘丽,石俊.基于梁变形影响的混凝土双向板的挠度分析[J].华中科技大学:城市科学版,2008,25(3):207-210. [7] 张平生.四边简支钢筋混凝土双向板挠度计算与板厚确定[J].西安冶金建筑学院学报,1991,23(3):358-365. [8] 袁涛.普通钢筋混凝土双向板正常使用阶段变形计算[D].哈尔滨:哈尔滨工业大学,2008. [9] GB 500102010混凝土结构设计规范[S]. [10] ACI Committee, Building Code Requirments for Structural Concrete (ACI 318-08) and Commentary[S]. -
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