无降水深基坑抗浮锚杆-旋喷体封底阻水体设计

董天文; 许彬; 王家伟; 张建国

doi:10.11779/CJGE201805009

无降水深基坑抗浮锚杆-旋喷体封底阻水体设计 English Version

1. 辽宁工程技术大学,辽宁阜新 123000;
2. 中冶沈勘工程技术有限公司,辽宁沈阳 110016

详细信息

作者简介:
董天文(1970- ),男,天津人,教授,博士,主要从事岩土工程研究工作。E-mail: dongtianwen111@163.com。

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出版历程
- 修回日期: 2017-02-15
- 发布日期: 2018-05-24

Design of sealing bottom water-stop body of anti-floatage anchor-jetting body in non-dewatering deep foundation pits

1. Liaoning Technical University, Fuxin 123000, China;
2. Shenkan Engineering & Technology Corporation, MCC, Shenyang 110016, China

摘要

摘要: 基坑降水是基坑土方开挖阶段和使用阶段的重要环节,但会打破原有的地下水平衡,严重浪费地下水资源,并引起不均匀沉降,导致了较多的工程事故。抗浮锚杆-旋喷体是新型无降水深基坑底部的重要止水结构。基于无降水深基坑抗浮锚杆-旋喷体力学分析、阻水体有效性、支护体系安全,确定了旋喷体处于弹性工作状态,应用弹性力学理论建立了均布荷载、集中荷载作用下的弹性厚板应力解,得到了旋喷体的强度安全控制方法和抗浮锚杆的抗拔力计算方法,并开发设计软件用于某深基坑的抗浮锚杆-旋喷体封底阻水体的设计,基坑施工监测数据表明：在基坑土方开挖和使用阶段,基坑内除少量侧壁渗水和自然降水外,基坑安全性满足施工和使用要求。
- 基坑工程 /
- 无降水深基坑 /
- 锚杆-旋喷体 /
- 抗浮锚杆 /
- 弹性应力解
Abstract: The dewatering work of foundation pits is an important part of foundation pit engineering. Because this work may break the original balance of groundwater, and cause uneven settlement of the surrounding ground surface, and serious engineering accidents. At the same time, it wastes groundwater resources seriously. The anti-floatage anchor-jetting body (AAB) of deep foundation pits is a new important sealing structure of non-dewatering deep foundation pits. Based on the analysis of the mechanics of AAB in non-dewatering deep foundation pits, the effectiveness of the water-stop body and the safety of the support system, it is determined that the jetting body is in the elastic state. Using the theory of elasticity, the stress solutions of elastic thick plate under uniform and concentrated loads are established, the strength safety control method and the relevant method for calculating anti-uplift force of anti-floatage anchor are obtained, and the software for the design of sealing bottom water-stop body of AAB in non-dewatering deep foundation pits is developed. The monitoring data of foundation pit show that, in the excavation and service, the safety of the foundation pit meets the requirements of construction, although it has a small amount of side wall seepage and natural watering.
- foundation pit engineering /
- non-dewatering deep foundation pit /
- anchor-jetting body /
- anti-floatage anchor /
- elastic stress solution

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参考文献(15)

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无降水深基坑抗浮锚杆-旋喷体封底阻水体设计 English Version

作者简介: 董天文(1970- ),男,天津人,教授,博士,主要从事岩土工程研究工作。E-mail: dongtianwen111@163.com。

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Design of sealing bottom water-stop body of anti-floatage anchor-jetting body in non-dewatering deep foundation pits

期刊类型引用(6)

其他类型引用(7)

计量

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目录

作者简介:
董天文(1970- ),男,天津人,教授,博士,主要从事岩土工程研究工作。E-mail: dongtianwen111@163.com。