真空和堆载两种预压法的室内试验研究

吴桂芬; 高玉峰; 魏代现; 刘汉龙

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真空和堆载两种预压法的室内试验研究

基础理论与实验研究 | 更新时间：2026-06-25

- 真空和堆载两种预压法的室内试验研究
- Study on laboratory test of vacuum and surcharge preloading
- 岩土力学 2005年26卷第S1期　刊出日期
- 作者机构：
  
  1. 河海大学岩土工程研究所,南京,210098
  2. 广西电力工业勘察设计研究院,南宁,530023
  3. 山东临沂岸堤水库管理处,山东,临沂,276001
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(No. 50379010)
- DOI：
  中图分类号： TU454
- 网络首发：2005-12-15，
  
  纸质出版：2005
- 稿件说明：
移动端阅览
吴桂芬, 高玉峰, 魏代现, 等. 真空和堆载两种预压法的室内试验研究[J]. 岩土力学, 2005,26(S1期　刊出日).

WU Gui-fen, GAO Yu-feng, WEI Dai-xian, et al. Study on laboratory test of vacuum and surcharge preloading[J]. 2005, 26(S1期　刊出日).
吴桂芬, 高玉峰, 魏代现, 等. 真空和堆载两种预压法的室内试验研究[J]. 岩土力学, 2005,26(S1期　刊出日). DOI：

WU Gui-fen, GAO Yu-feng, WEI Dai-xian, et al. Study on laboratory test of vacuum and surcharge preloading[J]. 2005, 26(S1期　刊出日). DOI：

摘要

通过室内试验模拟真空预压法和堆载预压法加固不同深度的土体，对两种预压法下土体前后的物理力学性质指标、土体的沉降量、排水量等进行了分析，认为两种方法均能使土体的物理力学性质改善，就渗透性而言，真空预压优于堆载预压，但就压缩性而言，堆载预压优于真空预压；堆载预压下试样的轴向位移远大于真空预压下的轴向位移，且比真空预压下的沉降收敛慢；真空预压下的排水量大约是堆载预压下排水量的1.8倍；在真空预压和堆载预压下，浅层土体的排水量均大于深层土体的排水量。

Abstract

By modeling vacuum preloading and surcharge preloading in different depths of the soil using the laboratory test; then soil properties before and after test

axial settlements

volume changes of two methods are analyzed. And some useful conclusions are drawn; soil properties are improved and penetrability after vacuum preloading is better than the one after surcharge preloading

while compressibility after surcharge preloading is better than the one after vacuum preloading. Settlement after surcharge preloading is much bigger than the one after vacuum preloading

and it is constringed more slowly than the one of vacuum preloading. Volume change after vacuum preloading is 1.8 times more than the one after surcharge preloading

and volume change of shallow soil is more than the one of deep soil after vacuum and surcharge preloading.

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