对称双斜桩桩基础竖向承载力模型试验研究  

EXPERIMENTAL STUDY ON BEARING CAPACITY COMPARISON BETWEEN SYMMETRIC DOUBLE GROUP PILES UNDER VERTICAL LOAD

作　　者：吕凡任[1] 邵红才[1] 金耀华[1] 

机构地区：[1]扬州职业大学土木工程系,江苏扬州225009

出　　处：《工业建筑》2012年第5期102-105,共4页Industrial Construction

基　　金：江苏省第四期"333工程"第三层次培养对象资助;扬州职业大学校级课题(07t03)资助

摘　　要：对称双斜桩基础是斜桩基础用于建(构)筑物的基本基础形式。通过对桩身竖向倾角分别为0°、5°、10°、15°和20°的对称双斜桩基础模型试验,研究竖向荷载作用下对称双斜桩基础的承载特点。研究发现,对称双斜桩基础在竖向荷载作用下,随着桩身倾角的增加,当桩身对竖向的倾角在5°～10°时,其竖向承载力比直桩基础大,当桩身对竖向的倾角超过10°时,其竖向承载力随桩身倾角的增加逐渐减小,并小于直桩基础的承载力;根据该模型试验,对称双斜桩基础当桩身对竖向的倾角在5°～10°内是最优的。The foundation with symmetric double batter piles is the main type, which is used for buildings and structure. The model experiments were done. The angles of the batter piles were 0°, 5°, 10°, 15°, and 20° separately. The characteristics of the vertical bearing capacity were analyzed. The study indicated that under the vertical load as the angle of the batter pile was between 5° and 10°, the vertical bearing capacity of the foundation was more than the one with vertical group piles. When the angle was more than 10° , the vertical bearing capacity of the foundation decreased and even less than the one with vertical group piles.

关 键 词：斜桩 群桩 模型试验 竖向承载力 

分 类 号：TU473.1[建筑科学—结构工程]