摘要
利用解析解答对刚性桩复合地基在竖向荷载下的工作特性进行了较深入的分析,着重讨论了桩土应力比及荷载分担比等随复合地基荷载、垫层厚度、垫层模量、桩长、桩间距、桩间土模量和桩端土抗力系数等因素变化的规律.计算结果表明,竖向荷载作用下,桩土应力比随复合地基荷载、垫层模量、桩长和桩间距的增加而增大,随垫层厚度和土体模量的增加而减小,同时也表明复合地基的设计参数有合理的取值范围.
In this paper,the working performance of rigid pile compositefoundation under vertical loads is analyzed by using the analytical method.Factors influencing the stress ratio and the proportion of the loads carried respectively by the piles and the soil are studied.The influence factors considered include the cushion thickness and modulus,pile length,pile spacing,soil modulus,modulus of subgrade reaction,etc.The calculated results indicate that the stress ratio under vertical loads increases with the increase of the loads,the cushion modulus,pile length,pile spacing,and decreases with the increase of the cushion thickness and soil modulus.It is clear from these analyses that,the design parameters of compositefoundation should be selected within rational range.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2003年第3期359-363,共5页
Journal of Tianjin University：Science and Technology
基金
北京市自然科学基金资助项目(8982011).
