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TWO-WAY SLAB STRIP SUPERPOSITION METHOD FOR CALCULATION OF PLATE CENTER DEFLECTION AND RECOMMENDATORY METHOD ON CRACK CHECK IN FLAT PLATE SUPPORTED BY COLUMN
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摘要: 针对《混凝土结构设计规范》(GB50010-2002)中受弯构件刚度计算公式仅适用于单向受弯这一突出问题,提出用双向板带叠加法计算柱支承板板格中心变形的思路和方法。应用有限元分析结果拟合出柱支承板支座控制截面的弯矩最大值Mmax与弯矩平均值-M比值(Mmax/-M)的计算公式,并据此提出柱支承板裂缝验算建议方法。Abstract: In view of the outstanding problem that the stiffness formula of the flexural member in the currentCode for Design of Concrete Structures(GB 50010-2002) can only be used for one-way flexural member,the two-way slab strip superposition method for calculating deflection in the panel center of flat plate supported by column(FPSC) is presented.The calculation formulas of ratio M-(max)/ of the maximum moment(M-(max)) to the average moment() at the critical section of support of FPSC is given by finite element analysis and curvefitting.Based on the method and formula,recommendatory method on crack check for FPSC is presented.
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GB 50010-2002 混凝土结构设计规范 [2] JGJ 92-2004 无粘结预应力混凝土结构技术规程 [3] 陶学康.无粘结预应力混凝土设计与施工.北京:地震出版社,1993:55-63 [4] 郑文忠.后张预应力混凝土平板-柱结构计算理论及设计方法研究:[博士学位论文].南京:东南大学,1994 [5] 郑文忠,俞伟根,吕志涛.后张预应力平板-柱结构合理计算模式和方法的研究.工程力学,1995,12(3):39-54 [6] 郑文忠,王英.后张预应力混凝土平板-柱结构设计与工程实例.哈尔滨:黑龙江科学技术出版社,1999:4-17 [7] 郑文忠.无粘结预应力混凝土结构裂缝控制及验算建议.哈尔滨建筑大学学报,1996,29(6):21-25 [8] 张格明.柱支承预应力混凝土平板内力分布规律研究及应用:[硕士学位论文].哈尔滨:哈尔滨工业大学,2001 -
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