摘要
混凝土桩受基坑开挖、施工扰动等因素影响可能会发生倾斜,导致其工作性状发生变化。为获得不同倾斜角度对单桩承载力的影响及规律,采用单桩静载试验与有限元数值模拟试验相结合的方法,研究竖向荷载作用下不同倾斜角度单桩的荷载传递特征和桩顶沉降变形。研究结果表明,倾斜桩顶沉降量在相同桩顶竖向荷载作用下,随着倾斜角度的增大而增大;在桩体刚度足够大的情况下(极限荷载内),倾斜角在8°以内桩顶沉降小于竖直桩,说明桩身入土后,在结构完整的情况下,桩身的自身承载力并不会因为桩身的轻微倾斜而降低。
Due to the influence of excavation, construction disturbance and other factors, the concrete pile may be inclined, resulting in the diversification of the working behavior of pile foundation. In order to obtain the influence and the orderliness of different inclination to the bearing capacity of single pile, the method of the single pile static load test combined with finite element numerical simulation experiment are adopted. And the load transfer characteristics of single pile under vertical load and the settlement of pile top are studied. Experimental results showed that the settlement of the top of the inclined pile increases with the increase of the inclined angle under the same pile top vertical load. When the pile stiffness is large enough （within the limit load）, the pile top settlement within 8 degree inclination angle is less than the vertical pile. This face illustrated that after the pile is buried, the bearing capacity of the pile will not be reduced because of the slight inclination of the pile of complete structure.
作者
杨德锋
王玉华
李丝
袁周祥
YANG De-feng;WANG Yu-hua;LI Si;YUAN Zhou-xiang(Hebei University of Engineering,School of Water Resources and Hydropower,Handan 056038,Hebei,China;China Machinery International Engineering Design ＆ Research Institute Co.Ltd.,East China Branch,Nanjing 210023,China)
出处
《水利科技与经济》
2018年第11期36-40,共5页
Water Conservancy Science and Technology and Economy
关键词
竖向荷载
单斜桩
静载试验
有限元
桩顶沉降
vertical load
inclined pile
static load test
finite element
settlement of pile top
