Development and application of new type of assembly recyclable soil nailing for foundation pit engineering

LI Lian-xiang; HU Feng; HU Xue-bo; ZHANG Jia-mian

doi:10.16285/j.rsm.2017.S1.013

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Development and application of new type of assembly recyclable soil nailing for foundation pit engineering

更新时间：2026-06-25

- Development and application of new type of assembly recyclable soil nailing for foundation pit engineering
- Vol. 38, Issue S1, Pages: 113-122(2017)
- 作者机构：
  
  1. 山东大学土建与水利学院,山东,济南,250061
  2. 山东大学基坑与深基础工程技术研究中心,山东,济南,250061
  3. 泰安市岱宗机电科技开发有限公司,山东,泰安,271000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.S1.013
  CLC： TU433
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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LI Lian-xiang, HU Feng, HU Xue-bo, et al. Development and application of new type of assembly recyclable soil nailing for foundation pit engineering[J]. 2017, 38(S1): 113-122.
DOI：

LI Lian-xiang, HU Feng, HU Xue-bo, et al. Development and application of new type of assembly recyclable soil nailing for foundation pit engineering[J]. 2017, 38(S1): 113-122. DOI： 10.16285/j.rsm.2017.S1.013.

摘要

在适宜直径钢管上焊接一定高度的钢片绕丝形成可回收土钉，通过专用连接构造实现可回收土钉的定尺接长

采用旋转施工设备将其旋入土体基坑边坡，形成新型装配式可回收土钉。新型土钉改变了传统土钉凭借注浆锚固体与土体之间的界面黏结力或摩擦力抗拔机制，代之以土体与钢管界面间的摩擦受力及土体与绕丝端部的挤压受力机制。通过现场试验、数值模拟优化升级和现场应用检测，获得新型土钉工作机制，建议了承载力估算方法，新型装配式可回收土钉适应建筑产业化趋势，减少地质环境的污染，实现建筑材料循环利用，具有明显工程价值。

Abstract

Recyclable soil nailing is formed by welding a steel wire with a certain height on the optimum diameter steel pipe. The recyclable soil nailing is connected with the specific length by special connection structure and screwed into foundation pit slope by using the rotating construction equipment. The processes of the described above form a new type of assembly recoverable soil nailing. The traditional soil nailing stress mechanism relies on the cohesive force or friction between grouting anchor solid and soil. The new type of soil nailing changes the stress mechanism into friction between soil and steel tube interface and extrusion force between soil mass and the wire ends. The working mechanism of new type of soil nailing is obtained by field tests

the optimization of numerical simulation and field application tests. The new type of assembly recyclable soil nailing adapts to construction industrialization trend

reduces geological environment pollution and realizes building materials to be recycled. Therefore it has obvious engineering value.

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