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直排式真空预压法在天津港地基处理工程中的应用

葛安定 李学艳

港工技术2012,Vol.49Issue(1):61-64,4.
港工技术2012,Vol.49Issue(1):61-64,4.

直排式真空预压法在天津港地基处理工程中的应用

Application of Direct Vacuum Preloading Method in Tianjin Port Foundation Treatment

葛安定 1李学艳1

作者信息

  • 1. 中交第一航务工程勘察设计院有限公司,天津300222
  • 折叠

摘要

Abstract

At present, vacuum preloading method is mainly applied for reinforcing foundation formed by dredger fills in coastal area. When soft deposits are reinforced by the method, medium coarse sand is used to be horizontal drainage channel. In recent years, its price rises continuously due to the shortage of medium coarse sand resource, which causes higher cost of the projects, even shutdown of the project with unacceptable loss. By optimizing conventional vacuum preloading construction technology, direct vacuum preloading method is adopted to connect drainage board with filter tube directly, shorten vacuum transfer path and reduce energy consumption. The predicted effect is obtained. The relevant theoretical calculation and project example show that direct vacuum preloading method is not restricted by sand bed, which is characterized with low cost, high efficiency, short construction period and high settlement velocity in early stage. In addition, the consolidation degree, settlement velocity and vane-shear strength indexes satisfy the design requirements.

关键词

直排式真空预压法/固结度/沉降速率/十字板抗剪强度/应用

Key words

direct vacuum preloading method/ consolidation degree/ settlement velocity/ vane-shear strength/ application

分类

建筑与水利

引用本文复制引用

葛安定,李学艳..直排式真空预压法在天津港地基处理工程中的应用[J].港工技术,2012,49(1):61-64,4.

港工技术

OACSTPCD

1004-9592

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