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本文对钢筋砼井式楼盖常用的几种设计方法进行比较,在此基础上,按现行规范的要求提出一种较完整的优化设计数学模型。除考虑到梁、板的共同工作外,还计及了结构的抗扭性能。 在内力分析阶段采用有限单元法计算,在截面设计阶段采用文[6]的准则法计算,同时还用复合形法逐步进行校对。对于一般的钢筋砼楼盖使用本文的方法只需二至三个选代循环,占机时1～2分钟左右。 文末列举了一个工程设计实例。
This article compares several common design methods for reinforced concrete floor slabs. Based on this, a more complete mathematical model for optimal design is proposed according to the requirements of the current specification. In addition to considering the joint work of beams and plates, the torsional performance of the structure is also taken into account. In the internal force analysis stage, the finite element method was used for calculation. In the cross-section design stage, the criterion method of [6] was used for calculation, and the complex method was also used for proofreading. For the general reinforced concrete floor, only two to three generations of cycles are used for this method, which takes about 1 to 2 minutes. At the end of the article, an engineering design example is listed.