水道港口2018，Vol.39Issue(2)：173-180,8.
深基槽重力式码头地基应力分布研究及基槽开挖优化
Foundation stress distribution regularity and trench optimization of gravity quay with deep foundation trench
郭隆洽 1邬光远 2袁达 1宋兰芳 3陈达1
作者信息
- 1. 河海大学,南京210098
- 2. 中交第四航务工程勘察设计院有限公司,广州510230
- 3. 宁波市港航管理局,宁波315042
- 折叠
摘要
Abstract
As for the gravity quay with deep foundation trench, the excavated and backfilling volume of foundation trench will be very large according to design and construction code for gravity quay.Foundation stress regularities of the corresponding depth, young′s modulus of the soil outside and under the trench, base load and rear uniform load were concluded through the finite element calculation.It is found that at a deep place,the verti-cal additional stress of the foundation at the rear toe may be larger than that at the front,and the normative method may overestimate the stress diffusion range and underestimate the foundation stress value.Based on the Boussinesq solution,a table of the foundation stress diffusion angle under corresponding load and trench depth was proposed, with which the trench width at the bottom could be optimized.Besides, a simplified method for calculating the foundation stress with four control points was brought forward.Further more,an optimization method was proposed, in which the trench bottom width was not excavated according to the foundation stress distribution range.However, the bearing capacity of the stratum outside the trench needs to be checked and the stress concentration within the scope of the base width should not be ignored.关键词
深基槽/重力式码头/地基应力/应力扩散角/优化Key words
deep foundation trench/gravity quay/foundation stress/stress diffusion angle/optimization分类
交通工程引用本文复制引用
郭隆洽,邬光远,袁达,宋兰芳,陈达..深基槽重力式码头地基应力分布研究及基槽开挖优化[J].水道港口,2018,39(2):173-180,8.
