竖向受压螺旋桩荷载沉降函数解  

Solution of load-settlement function of single screw pile under axial pressure

作　　者：董天文[1] 梁力[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《岩土工程学报》2007年第10期1483-1487,共5页Chinese Journal of Geotechnical Engineering

摘　　要：竖向受压螺旋桩基础的单桩荷载沉降函数的土材料采用双折线数学模型,从桩体、叶片的传力过程入手,建立螺旋桩荷载传递函数,导出其显式解。通过对6根连续叶片式、分层叶片式螺旋桩的静载试验P–s曲线的拟合,说明推导的荷载、位移解答适用于求解螺旋桩的P–s曲线,并可根据s-logP法判定螺旋桩的极限承载力,提供合理的单桩承载力设计值。The load-settlement function of a screw pile under axial load was built on the bilinear model of soils and the transferring process of force from the pile to ground, and some solutions to this transfer function were educed. Through the fitting of 6 curves of load-settlement （P-s curve） obtained by static load tests on the continuous kind and the bed kind of screw piles, the ultimate capacity of screw piles could be estimated by the method of s-logP, and the rational design value of capacity of a single pile was proposed.

关 键 词：螺旋桩基础 荷载沉降传递函数 静载荷试验 极限荷载 

分 类 号：TU473[建筑科学—结构工程]