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一、群桩承台土反力和承台分担荷载的作用1.桩-低桩承台共同作用的内涵根据室内外模型试验和原型试验可知,桩-低桩承台相互作用主要包括下列七个方面: (1)在承台顶部荷载作用下,由于低桩承台限制了桩与土的相对位移,这样承台的存在有限制桩周土与桩上段间桩侧摩阻力发挥的“削弱作用”; (2)群桩的承台,有使承台下基土不易被侧向挤出的“遮拦作用”;
I. The role of soil counteracting force of group pile caps and load sharing of pile caps 1. The connotation of pile-low pile caps’ collective action According to indoor and outdoor model tests and prototype tests, the pile-low pile cap interaction mainly includes the following seven Aspects: (1) Under the action of the top load on the pile cap, the low pile cap limits the relative displacement between the pile and the soil. Thus, the existence of the cap has the effect of limiting the frictional resistance of the pile side between the pile and the upper part of the pile. “The role of”; (2) pile cap pile, there is so that the base soil under the cap is not easy to be sideways out of the “covering effect”;