挤密砂桩承载力计算方法探讨

摘要

At present, strengthening of foundation of port engineering is more and more important with the development of the coast pier and the construction of buildings to the deepwater area in advance. So techniques of foundation strengthering are essential and necessary in many casses. The treatment method of the foundation of sand compaction piles in the construction of new buildings of the sea port has an obvious advantage. However the current understanding and mastery of bearing capacity calculation method of sand compaction piles are still remain vague. So in the domestic application, this method gets great restrictions. In order to study the load-bearing characteristics of sand compaction piles, this paper summarizes the calculation methods of sand compaction pile bearing capacity according to the domestic and foreign relevant materials. At the same time, this paper provides an example of the Yangshan in ShangHai to verify these calculation methods. The comparison of all kinds of calculation methods for bearing capacity can provid references for the design of similar projects.%伴随着外海筑港,海上人工岛等工程建设向深水区的推进,地基加固的重要性越来越明显,很多情况下成为必不可少的施工手段.挤密砂桩这种地基处理方法在外海筑港及人工岛建设中具有非常明显的优势.目前由于国内工程界对挤密砂桩承载力计算的认识和掌握的不够透彻,使其在国内的应用受到了极大的制约.为研究挤密砂桩的承载特性,根据国内外相关资料,总结挤密砂桩承载力的计算方法,并以上海洋山深水港区挤密砂桩复合地基为例对计算方法进行验证,对比承载力的各种计算方法,为类似工程设计提供参考.