花管注浆改进碎石土的性能研究
摘要:注浆钢花管能起到改良土体、承受荷载的功能，还能提高土体的抗渗性能，在目前的基坑和边（滑）坡支护工程中应用越来越多。其主要应用方式包含承受拉力的钢锚管和承受侧向荷载的钢花管桩，而在施工过程中因注浆引起的桩周土体性能变化关注较少。依托丰台某基坑工程，在碎石土场地做袖阀管注浆，比较注浆前后土体参数的变化，揭示了注浆带来土体加固效果，为后期工程应用提供参考。
Abstract:Pray of molten steel pipe grouting soil improvement, bear the function of load, also can improve the permeability of soil properties, in the foundation pit and edge (slide) in slope supporting engineering application more and more.Its main applications include sustain tension steel anchor pipe and spray of molten steel pipe pile under lateral load, and in the construction process caused by grouting pile soil properties change less attention. In this paper, based on a certain foundation pit project of Fengtai, do the sleeve valve tube grouting in the gravel soil, compared before and after the change of the soil parameters, grouting reveals the grouting reinforcement effect of soil, provide reference for later engineering application.
中文标题：
花管注浆改进碎石土的性能研究
Study on Improving the Performance of Gravel Soil by Using the Flow-tube Grouting
作者：
翟玉新1,戚建民2
Zhai Yuxin1,Qi Jianmin2
作者简介:翟玉新,男,1980年生,汉族,河北盐山人,大学本科,硕士,高级工程师,主要从事岩土工程设计、施工。E-mail:zhaiyuxin@ztjs.cn
通讯地址：
1. 中铁建设集团有限公司, 北京 100131; 2. 北京建工海亚建设工程有限公司, 北京 100020
1.ChinaRailwayConstructionGroupCo.,Ltd,Beijing100131,China; 2.BeijingConstructionEngineeringHaiyaConstructionEngineeringCo.,Ltd,Beijing100020,China
中图分类号:TU4724
doi:10.3969/j.issn.1007-2993.2018.02.009
出版物：岩土工程技术
收稿日期:2018-01-25
网络出版日期:2021-07-06
关键词:注浆,渗透系数,密实度
Key words:grouting,the permeability coefficient,compactness
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