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通过室内模型试验,对天然地基上相同板厚、不同梁高的两组多柱和单柱梁板式基础的地基反力做了研究。得出了梁板式基础在不同梁高跨比条件下,地基反力分布的规律。肋梁的作用在于调整柱下、梁下和板格区域的地基反力趋于一致,但其调节能力是有限的;当地基土承载力达到特征值,梁为刚性或半刚性,板为柔性时,柱下反力近似为平均荷载的1.2倍,梁下反力近似等于平均荷载,板格区域反力近似为平均荷载的0.8倍。
Through the indoor model test, the ground reaction force of two groups of multi-column and single-column beam-slab foundation with the same plate thickness and different beam height on natural foundation is studied. The law of the foundation reaction distribution under different beam-span ratios is obtained. The function of the rib beam is to adjust the reaction force of foundation under the column, beam and slab area to be consistent but its regulating capacity is limited. When the bearing capacity of the foundation soil reaches the characteristic value, the beam is rigid or semi-rigid and the plate is flexible , The reaction force under the column is approximately 1.2 times the average load, the reaction force under the beam is approximately equal to the average load, and the reaction force in the plate area is approximately 0.8 times the average load.