一次性免堆载预压技术研究与应用

Application and research of the once-for-all surcharge-free preloading process

摘要:

软土地基处理恰当与否，关系到整个工程质量、投资和进度，其重要性已越来越多地被人们所认识。通过开展一次性免堆载预压技术研究，根据排水固结原理及桩体自身抗拔力，用三维固结筒实现饱和软土无外来荷载条件下的一次性快速排水固结，提高地基土抗剪强度、降低压缩性、改善透水性及动力特征。

关键词:排水固结;桩体反力;一次性免堆载预压;三维固结筒;软土地基

Abstract:

Soft ground treatment affects the quality, investment and progress of the whole project, and its importance has been recognized by more and more people. Based on the principle of three-dimensional drainage consolidation and the pull-out force of the pile itself, the 3-D consolidated cylinder was used for once-for-all rapid drainage consolidation of saturated soft ground without external load, improving the shear strength, compression behavior, water permeability and dynamic characteristics of ground.

Key words:drainage consolidation; pile reaction force; once-for-all surcharge-free preloading; 3-D consolidating cylinder; soft ground