岩土力学2012，Vol.33Issue(10)：2947-2952,6.
大直径变径桩竖向承载特性模型试验研究(Ⅰ)
Model testing study of vertical bearing behaviors for large diameter pile with variable cross-section (Ⅰ)
摘要
Abstract
Large diameter pile with variable cross-sections is applied to the region of bride engineering and foundation treatment. It is necessary to study the vertical bearing behaviors and working mechanism. The relation between vertical bearing capacity and settlement & distribution of the axial forces and skin friction along pile and failure mode of the pile are discussed based on laboratory test. According to the test, it is concluded that it is clear that the vertical bearing behaviors of the pile is affected by the ratio of variable diameters b value; the b is more smaller, the vertical bearing capacity is more smaller. It is proved that how to choose the b is controlled by the lateral bearing behaviors. The squeezing effect is not clear to improve the vertical bearing capacity unless the top displacement of the pile reaches a certain value.关键词
大直径变截面桩/模型试验/竖向承载特性Key words
Large diameter pile with variable cross-section/ model test/ vertical bearing behaviors分类
建筑与水利引用本文复制引用
方焘,刘新荣,耿大新,罗照,纪孝团,郑明新..大直径变径桩竖向承载特性模型试验研究(Ⅰ)[J].岩土力学,2012,33(10):2947-2952,6.基金项目
铁道部重点科技基金(No.2009G010-D) （No.2009G010-D）
国家自然科学基金(No.51068006) （No.51068006）
新世纪优秀人才支持计划(No.NCET-05-0763). （No.NCET-05-0763）
