论文部分内容阅读
复合地基采用各种桩体作为增强体,使桩与土共同作用而提高天然地基的承载力。论文通过数值模拟的手段分析了桩身弹性模量、褥垫层强度及褥垫层厚度等因素对复合地基工作性状的影响程度,计算结果显示:桩身模量提高后其桩土应力比也随之增大;在一定范围内,随着褥垫层强度的提高,桩土应力比略有增加;褥垫层厚度在一定范围内增加能够迅速减小桩土应力比,相同褥垫层厚度对不同桩体的应力比调节效果存在区别。
Composite foundation using a variety of piles as a reinforcement, so that the pile and the soil together to improve the bearing capacity of natural foundation. The paper analyzes the influence of the elastic modulus of the pile body, the strength of the cushion and the thickness of the cushion on the working performance of the composite foundation by means of numerical simulation. The calculation results show that the pile-soil stress ratio With the increase of cushion strength, the pile-soil stress ratio increased slightly; the increase of cushion thickness within a certain range can quickly reduce the pile-soil stress ratio, the same thickness of cushion Different pile stress than the adjustment effect there is a difference.