摘要
墙式嵌岩桩基础指的是横桥向很宽的扁矩形桩,依据其承载机理,可简化为平面应变问题。通过大量数值计算,得到此类桩基础在承受水平推力和纯弯矩时的桩内应力和变形分布规律,通过数据拟合,总结出适用于不同岩石特性、不同尺寸的桩基础各截面上的等效内力及岩面处特效变形的通用无量纲简化公式。
The embedded rock wall foundation is a kind of bridge foundation with long and narrow rectangular cross section in the transverse direction of the bridge. According to its carrying mechanism, the stress and strain of the foundation could be simplified as a plane strain elastic problem for analysis. Through enormous numerical calculations, the stress and deformation distribution regularities in the foundation carrying horizontal or bending static loads are obtained by using the software MARC, and through data-fitting, the equivalent internal forces suitable for different rock properties and different sizes of the foundations are summarized and several general dimensionless expressions for special deformations at rock surface are worked out as well.
出处
《桥梁建设》
EI
CSCD
北大核心
2004年第2期39-42,共4页
Bridge Construction
关键词
墙式基础
嵌岩桩
数值计算
应力
变形
embedded rock wall foundation
numerical calculation
stress
deformation
