Deflections of Shallow Pier Foundations
Deflections of Shallow Pier Foundations
复制标题
浅墩基础的挠度
DOI：
--
复制
发表时间：
1970
期刊：
影响因子：
--
通讯作者：
J. N. Walker
中科院分区：
文献类型：
--
作者：
D. Slack;J. N. Walker
刚性框架结构采用浅墩基础，要求结构设计者能够预测基础的任何横向扩展，以便框架可以设计为适应扩展引起的任何力矩变化。现有的程序还没有充分定义的主要变量，并没有标准的程序已经制定了评估路基反力的水平系数。本文根据弹性地基梁理论，建立了一个计算浅桥墩在近地面水平力作用下挠度的数学关系式。地基水平反力系数由现场试验确定，并根据弹性理论与桥墩尺寸相关联。全尺寸桥墩的挠度测试结果，并与预测的挠度进行比较。比较表明，实际和预测的挠度之间的密切协议。
The use of shallow pier foundations for rigid frame structures requires that the designer of the structure be able to predict any lateral spreading of the foundation so that the frame may be designed to accommodate any moment changes due to the spreading. Available procedures have not adequately defined the principal variables and no standard procedure has been developed for evaluating the horizontal coefficient of subgrade reaction. A mathematical relationship, based on the theory of beams on elastic foundations, is formulated for predicting the deflection of shallow piers subjected to horizontal forces near the ground line. The coefficient of horizontal subgrade reaction for use in the relationship was determined by in situ tests and related to pier size by theory of elasticity. Results of deflection tests on full scale piers are presented and compared to predicted deflections. The comparison indicates close agreement between actual and predicted deflections.