土工基础

土工基础 ›› 2022, Vol. 36 ›› Issue (6): 988-991.

• 测试技术 • 上一篇    下一篇

基坑开挖废弃土固化路用试验研究

张婷婷1，陶 莉1，李建华1，倪定宇1，高世虎1，李秉宜2   

  1. (1.温州职业技术学院软土特性与环境岩土工程研究中心，浙江温州 325035；2.苏州科技大学江苏省生态道路技术产业化工程研究中心，江苏苏州 215011)
  • 收稿日期:2022-04-13 修回日期:2022-05-06 出版日期:2022-12-31 发布日期:2022-12-28
  • 作者简介:张婷婷（1983-），女，讲师，工学硕士，研究方向为基坑设计与地基处理。
  • 基金资助:
    浙江省教育厅高等学校访问工程师校企合作项目（编号FG2020067）;温州市科技计划项目（编号S20180004）

Laboratory Study on the Solidifying of Wasted Soil from Deep Excavation for a Roadway Construction

ZHANG Tingting1, TAO Li1, LI Jianhua1, NI Dingyu1, GAO Shihu1， LI Bingyi2   

  1. (1.Research Center for Soft Soil and Environmental Geotechnical Engineering, Wenzhou Polytechnic, Wenzhou 325035；
    2.Jiangsu Technology Industrialization and Research Center for Ecological Road Engineering, Suzhou University of Science and Technology, Suzhou 215011)
  • Received:2022-04-13 Revised:2022-05-06 Online:2022-12-31 Published:2022-12-28

摘要： 土体固化技术作为一种不良地基土处理技术，已经在我国道路、路堤工程建设中得到了广泛的应用。通过对掺入不同固化剂下的固化土进行了小型直剪、无侧限抗压以及CBR试验。结果显示在龄期的增长下，固化土的各种强度均有所提高，其中使用KZJF型固化剂加固的土壤强度提高最多且增长较快。同时还进行了现场试验，使用KZJ-F型固化剂对现场地基土进行处理，进行不同深度下的十字板剪切试验以及载荷板试验，结果显示，加固后的地基土各个深度下的抗剪强度均不小于150 kPa，在7 d~28 d龄期下极限承载力均不低于350 kPa，完全满足工程要求。

关键词: 地基处理, 固化土, 载荷板试验

Abstract: As a ground treatment technology, the soil solidification method has been widely used in the road and the embankment construction. In this study, the small-scale direct shear tests, the unconfined compression tests and the CBR tests were carried out on the cured waste soil mixed with different agents. The results showed that the strength of all solidified soil samples increased with the increase of age, and the soil strength strengthened with the KZJ-F type agent increased most rapidly. Field tests were also performed in this study. The KZJ-F type agent was used to treat the in-situ soil, and vane plate shear tests and plate loading tests were performed at different depths. The results show that the shear strength of the solidified soil was greater than than 150kpa at all depths, and the ultimate bearing capacity was greater than 350kpa at the age of 7d to 28d, which fully met the engineering requirements.

Key words: Ground Improvement, Stabilized Soil, Plate Loading Test

中图分类号: