钢筋混凝土厚板的变形分析

摘要

This paper uses finite layer method to study the deformation of reinforced concrete rectangular thick slabs. The study shows that when the thickness of reinforced concrete slab is small, using the layered system theory and the finite layer method to calculate the stresses and displacements, the results are very close to ones with thin plate theory; when thickness of reinforced concrete is larger, results of calculation of finite layer method are smaller than results of thin plate and the plate theory, the same results with layered system theory. It is shown that the results of calculation are a conservative based on thin plate theory with the elastic foundation of reinforced concrete slabs. The method of this paper has the versatility for computing with elastic foundation of reinforced concrete thin slab and thick slab, and has been finited for free layer, in-terlayer contact condition, the foundation model, load type and location restrictions.%本文用有限层法研究钢筋混凝土矩形厚板的变形规律.分析计算表明,当钢筋混凝土板的厚度较小时,用层状体系理论和有限层法计算应力、位移,都与薄板理论结果十分接近;当钢筋混凝土板厚度较大时,有限层法的计算结果,较薄板和中厚板理论的结果小,而与层状体系理论的相同.这说明对于弹性地基上的钢筋混凝土厚板,按薄板理论计算是偏于保守的.本文的方法对于弹性地基上钢筋混凝土薄、厚板计算通用,不受层数、层间接触条件、地基模型、荷载类型和位置的限制.