参数变化对多元复合地基承载力的影响

Influence of Parameter Variation on Bearing Capacity of Multi-element Composite Foundation

结合室内模型试验和理论研究成果,考虑土的弹塑性和桩、土接触的高度非线性行为,建立比较合理的多元复合地基数值模型;通过改变设计参数(桩径,桩长,桩模量,褥垫层厚度,褥垫层模量),对多层地基多元复合地基承载力作了较系统的研究,有利于推动多元复合地基工程设计及理论研究的发展。

Combined with indoor model experiment and theoretical research result, considering elastic plasticity of soil and highly nonlinear behavior between pile and soil, this paper establishes relatively reasonable numerical model of multi-element composite foundation. Through changing design parameters （such as pile diameter, pile length, pile modulus, cushion thickness and cushion modulus）, it carries out systematic research on the bearing capacity of multi-layer multi-element composite foundation, which is favorable to promote the development of engineering design and theoretical research for multi-element composite foundation.