长江科学院院报 ›› 2016, Vol. 33 ›› Issue (10): 121-125.DOI: 10.11988/ckyyb.20150711

• 岩土工程 • 上一篇    下一篇

带承台倾斜单桩水平承载变形性状数值分析

樊文甫1,2,曹卫平1   

  1. 1.西安建筑科技大学 土木工程学院,西安 710055;
    2.特变电工新疆新能源股份有限公司,乌鲁木齐 830011
  • 收稿日期:2015-08-25 出版日期:2016-10-20 发布日期:2016-10-17
  • 作者简介:樊文甫(1991-),男,河南西平人,硕士,主要从事桩基工程研究,(电话)0991-3851270(电子信箱)fanwfdyx@163.com。

Numerical Analysis of Lateral Bearing Deformation Behavior of Single Batter Pile with Cap

FAN Wen-fu1,2,CAO Wei-ping1   

  1. 1.College of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;
    2. TBEA SUNOASIS Co. Ltd., Urumqi 830011, China
  • Received:2015-08-25 Online:2016-10-20 Published:2016-10-17

摘要: 为研究带承台倾斜单桩水平承载变形性状,通过数值模拟手段分析了水平荷载作用下桩身倾角、长径比对桩顶带承台斜桩的承载变形性状的影响,并重点分析了竖向荷载对水平受荷斜桩性状的影响。结果表明①水平荷载作用下,负斜桩的桩顶水平位移最大,直桩居中,正斜桩最小;桩身倾角越大,斜桩桩顶水平位移与相应直桩桩顶水平位移差值越大;相同情况下,长径比对斜桩桩顶水平位移影响不明显。②水平荷载作用下,桩身倾角只影响斜桩桩身弯矩的大小,而最大桩身弯矩的位置基本不变。③竖向荷载减小了负斜桩桩顶水平位移,却增大了正斜桩桩顶位移。④负斜桩的桩身最大弯矩随着竖向荷载的增大而减小,正斜桩却与之相反。

关键词: 斜桩, 水平承载特性, 数值分析, 长径比, 桩身倾角, 竖向荷载

Abstract: The influence of inclination angle and slenderness ratio, and especially vertical load, on the lateral response of single batter pile with cap was studied through 3-D finite element analysis. Results show that 1) under horizontal load, the lateral deformation of negative batter pile is larger than that of plumb pile, followed by positive batter pile. The difference of lateral deformation between batter pile and plumb pile increases with the increase of the inclination angle. The effect of slenderness ratio on the lateral deformation of batter pile is insignificant under the same condition; 2) the angle of batter pile affects only the value of moment along pile body under horizontal load. The position of the maximum moment of the pile is constant; 3) vertical load is favorable to decrease the lateral deformation of negative batter pile and increase the lateral deformation of positive batter pile; 4) the maximum moment of negative batter pile decreases as the increasing of vertical load, but it is in contrary with the positive batter pile.

Key words: batter pile, horizontal bearing performance, numerical analysis, slenderness ratio, inclined angle, vertical load

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