(1 四川省川建勘察设计院有限公司, 成都 610095; 2 四川省建筑设计研究院有限公司,成都 610095; 3 四川省建筑设计研究院有限公司复杂结构设计研究中心, 成都 610095)

摘要: 大直径钢管混凝土桩具有强度高、承载力大、变形小、施工快速等特点,适用于应急抢险工程. 在吴家沟安置区滑坡应急抢险工程中设置 6 根直径 2m 钢管混凝土抗滑桩,采用全回旋工艺成孔. 介绍了大直径钢管混凝土桩设计过程,分析了大直径钢管混凝土桩施工前后滑坡位移监测数据. 结果表明,大直径钢管混凝土桩短时间内有效控制了滑坡体变形速率,保证了永久抗滑工程的实施;处置后的滑坡处于稳定状态,工程治理效果良好,为类似工程提供了一种新的思路.

关键词: 大直径钢管混凝土桩; 滑坡; 应急抢险工程; 变形监测

中图分类号:TU473. 1 文献标志码:A 文章编号:1002-848X(2023)07-0137-06

DOI:10. 19701 / j. jzjg. SADI2321

Analysis on application of large-diameter concrete-filled steel pile in landslide emergency rescue in a resettlement area

LUO Yongzhong1,2, ZHOU Jun1,2, ZHAO Shixing2,3, NIE Haofan1,2,HUANG Xiangchun1,2, XIONG Bin1,2

(1 Sichuan Chuanjian Geotecnical Survey Design Institute Co. , Ltd. , Chengdu 610095, China; 2 Sichuan ProvincialArchitectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China; 3 Complex Structure Design andResearch Center, Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China)

Abstract: Large-diameter concrete-filled steel pile has the characteristics of high strength, high bearing capacity, littledeformation,rapid construction, etc. , which is suitable for emergency rescue engineering. The landslide emergency rescueengineering in Wujiagou resettlement area was equipped with 6 concrete-filled anti-slide steel piles with a diameter of 2mand the full swing process was used to drill holes. The design process of large-diameter concrete-filled steel pile wasintroduced, and the monitoring data of landslide displacement before and after the construction of large-diameter concretefilled steel pile were analyzed. The result show that the large-diameter concrete-filled steel pile effectively controls thedeformation rate of the landslide mass in a short time, which ensures the implementation of permanent anti-slideengineering. The landslide after treatment is in a stable state, and engineering treatment is quite effective, which providesa new method to deal with similar projects.

Keywords:large-diameter concrete-filled steel pile; landslide; emergency rescue engineering; deformation monitoring

第一作者:罗永忠,硕士,教授级高级工程师,主要从事岩土工程、地质灾害勘察(查)、设计、施工工作,Email:351041227@qq. com.

[引用本文] 罗永忠,周俊,赵仕兴,等. 大直径钢管混凝土桩在某安置区滑坡应急抢险中的应用研究[J]. 建筑结构,2023,53(7):137-142. LUO Yongzhong,ZHOU Jun,ZHAO Shixing,et al. Analysis on application of large-diameterconcrete-filled steel pile in landslide emergency rescue in a resettlement area [ J]. Building Structure, 2023, 53 ( 7):137-142.