2013 年 4月
第 4 期 总第 478 期
水运工程
Apr. 2013
·地基与基础·
竖向弹性地基梁法与假想嵌固点法
*
在砂性地基高桩码头设计中的应用
吴林键1，舒 丹1，王明祥2，况曼曼1，李 怡1
（1. 重庆交通大学 河海学院，重庆 400074；2. 重庆市渝航交通工程有限公司，重庆 400060）
摘要：研究了在砂性地基中采用竖向弹性地基梁法和假想嵌固点法分别定义桩土间相互作用的边界条件。以某港口工程项目为例，运用SAP2000结构分析软件，计算、比较并分析了这两种方法模拟桩土相互作用时码头横向排架中各桩的桩身变位和弯矩值。结果表明：在砂性地基中（桩为摩擦桩的情况），以假想嵌固点法计算得到的结果作为设计依据的做法偏危险；建议采用竖向弹性地基梁法，此法更为安全可靠。
关键词：砂性地基；竖向弹性地基梁法；假想嵌固点法；桩土作用；边界条件
中图分类号：U 652.7 文献标志码：A 文章编号：1002-4972(2013)Application of vertical elastic foundation beam method and illusion embedded solid point
method in design of high-pile wharf in sandy foundation soil
(1. School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
WU Lin-jian1, SHU Dan1, WANG Ming-xiang2, KUANG Man-man1, LI Yi1
foundation soil, defined by the vertical beam on elastic foundation method and the imaginary fixing-points method. Based on a port project, using the structure analysis software SAP2000, we calculate, compare and analyze each pile’s ultimate resistance of the pile and settlement of wharf transverse bent to simulate pile-soil interaction. The method of vertical beam on elastic foundation, which is much more reliable and stable.method; pile-soil interaction; boundary condition
result shows that in the sandy foundation soil (when piles are friction piles), the situation which adopts the results by the imaginary fixing-points method as the design basis can be very risky. Therefore, it is suggested to adopt the
Abstract: This paper studies the boundary conditions of interaction between the polar and the soil in sandy
2. Chongqing Yuhang Transportation Engineering Co. ,Ltd., Chongqing 400060, China)
Key words: sandy foundation soil; vertical beam on elastic foundation method; imaginary fixing points
高桩码头作为码头多种结构形式中十分典型的一类，是将上部结构的荷载通过桩基传递到地基土当中，具有结构简单、砂和石用量少、对开挖超深适应能力强、波浪反射小、泊稳条件好等
优点[1-2]，在沿海及内河港口码头中得以广泛应用。
高桩码头的桩基既是基础又是码头主体结构
的组成部分，其在承受竖向荷载（如上部结构自
收稿日期：2012-10-08
* 基金项目：
2013 年 4月
第 4 期 总第 478 期
水运工程
Apr. 2013
·地基与基础·
竖向弹性地基梁法与假想嵌固点法
*
在砂性地基高桩码头设计中的应用
吴林键1，舒 丹1，王明祥2，况曼曼1，李 怡1
（1. 重庆交通大学 河海学院，重庆 400074；2. 重庆市渝航交通工程有限公司，重庆 400060）
摘要：研究了在砂性地基中采用竖向弹性地基梁法和假想嵌固点法分别定义桩土间相互作用的边界条件。以某港口工程项目为例，运用SAP2000结构分析软件，计算、比较并分析了这两种方法模拟桩土相互作用时码头横向排架中各桩的桩身变位和弯矩值。结果表明：在砂性地基中（桩为摩擦桩的情况），以假想嵌固点法计算得到的结果作为设计依据的做法偏危险；建议采用竖向弹性地基梁法，此法更为安全可靠。
关键词：砂性地基；竖向弹性地基梁法；假想嵌固点法；桩土作用；边界条件
中图分类号：U 652.7 文献标志码：A 文章编号：1002-4972(2013)Application of vertical elastic foundation beam method and illusion embedded solid point
method in design of high-pile wharf in sandy foundation soil
(1. School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
WU Lin-jian1, SHU Dan1, WANG Ming-xiang2, KUANG Man-man1, LI Yi1
foundation soil, defined by the vertical beam on elastic foundation method and the imaginary fixing-points method. Based on a port project, using the structure analysis software SAP2000, we calculate, compare and analyze each pile’s ultimate resistance of the pile and settlement of wharf transverse bent to simulate pile-soil interaction. The method of vertical beam on elastic foundation, which is much more reliable and stable.method; pile-soil interaction; boundary condition
result shows that in the sandy foundation soil (when piles are friction piles), the situation which adopts the results by the imaginary fixing-points method as the design basis can be very risky. Therefore, it is suggested to adopt the
Abstract: This paper studies the boundary conditions of interaction between the polar and the soil in sandy
2. Chongqing Yuhang Transportation Engineering Co. ,Ltd., Chongqing 400060, China)
Key words: sandy foundation soil; vertical beam on elastic foundation method; imaginary fixing points
高桩码头作为码头多种结构形式中十分典型的一类，是将上部结构的荷载通过桩基传递到地基土当中，具有结构简单、砂和石用量少、对开挖超深适应能力强、波浪反射小、泊稳条件好等
优点[1-2]，在沿海及内河港口码头中得以广泛应用。
高桩码头的桩基既是基础又是码头主体结构
的组成部分，其在承受竖向荷载（如上部结构自
收稿日期：2012-10-08
* 基金项目：