高压喷射扩大头锚杆在抗浮工程中的应用及探讨  

Application and discussion of high pressure jet bolt with enlarged head in anti-floating project

作　　者：张艳芳 曹磊[1] ZHANG Yanfang;CAO Lei(Beijing Institute of Geo-explorationTechnology,Beijing 100011,China)

机构地区：[1]北京市地质勘察技术院,北京100011

出　　处：《城市地质》2022年第1期72-78,共7页Urban Geology

摘　　要：以河北省廊坊市某地下车库抗浮项目为例,分析了高压喷射扩大头锚杆的抗拔力组成,详细阐述了扩大头锚杆的施工工艺流程及技术要点,并论述了该锚杆的应用效果。结果表明:该抗浮项目中扩大头锚杆施工质量稳定可靠,抗拔承载力满足设计要求,能够保证抗浮效果;与普通抗浮锚杆对比,施工总成本可降低约13.3%,施工总工期可节省约25.9%,施工工艺对环境友好。高压喷射扩大头锚杆在该项目中的成功实施可为类似工程的设计与施工提供借鉴和参考。Taking the anti-floating project of an underground garage in Langfang,Hebei Province as an example,this paper analyzes the anti-pulling force composition of the high-pressure jet expanded head bolt,and expounds the construction process and technical essentials of the expanded head bolt,as well as the effect of the bolt application.The results show that the construction quality of the expanded head anchor rod is stable and reliable;the uplift bearing capacity meets the design requirements and the anti-floating effect is guaranteed;the total construction cost can be reduced by about 13.3% compared with the common antifloating anchor rod;the total construction period can be shortened by about 25.9%;and the construction technology is environment-friendly.The successful implementation of high-pressure jet enlarged bolt in this project can provide reference for the design and construction of similar projects.

关 键 词：高压旋喷 扩大头锚杆 抗拔力 验收试验 

分 类 号：TU476[建筑科学—结构工程]