承受侧向土体位移桩基的一种耦合算法  

A COUPLING ANALYTICAL SOLUTION OF PILES SUBJECTED TO LATERAL SOIL MOVEMENTS

作　　者：杨敏[1] 周洪波[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]广东省建筑设计研究院,广东广州510010

出　　处：《岩石力学与工程学报》2005年第24期4491-4497,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：上海市科委重点资助基础研究课题(02DJ14062);教育部高等学校博士学科点专项科研基金资助项目(20020247003)

摘　　要：目前,分析侧向土体位移作用下桩基的性状时多采用非线性荷载传递法(p-y曲线法)和Poulos弹性理论法。据此,在p-y曲线法和Poulos弹性理论法的基础上,提出一种能够考虑两者优点的耦合算法。根据p-y曲线法分析得出相对于不同桩–土相对位移的弹性模量,利用分析得出的弹性模量,采用Poulos弹性理论法考虑桩–土之间的相互作用。研究分析表明:提出的耦合算法能够较为有效地分析侧向土体位移作用下桩基的性状。It is common to use the nonlinear load-transfer method （p-y curve method） or Poulos＇s elastic theory to calculate piles subjected to lateral soil movements at present. The characteristics of the two methods are discussed and a new coupling analytical solution based on the two methods is developed. In the new method, the soil moduli along pile length are calculated by the p-y curve method according to the soil elements＇ stresses level and lateral displacements between the pile elements and soil elements. Then, the elastic theory is used to account for the soil-pile interaction between different elements by using the above soil moduli. The results of the proposed coupling method are reasonable as shown by comparing lateral behavior of the pile under horizontal soil movements with those of the above two methods.

关 键 词：桩基工程 侧向土体位移 P-Y曲线法 弹性理论 耦合算法 

分 类 号：TU473[建筑科学—结构工程]