船式支护在基坑中的应用
摘要:在深厚软土地区的基坑,对基坑底软土进行搅拌加固形成强度较高的底板而保证坑底稳定,侧壁采用支护桩支护保证侧壁的稳定使其不倾倒,支护桩与加固底板两者共同作用形成的船状结构支护体系类似轮船的船侧壁及船底板,以保证基坑的稳定。结合具体的工程实例,介绍了船式支护的侧壁及底板的设计方法。工程案例成功实施,监测结果表明,船式支护既可避免支护桩嵌固深度过长,又利于软土的土方施工及工程桩的保护,是安全可靠的,对类似工程有一定的参考意义。
Abstract:During the foundation excavations in the deep thick soft soil area, the soft soil at the bottom of the foundation is stirred and strengthened to form a high-strength floor to ensure the stability. The side wall is supported by supporting piles to avoid the side wall from collapsing. The ship-form structural support system formed by the combination of the supporting piles and reinforced bottom plates is similar to the ship's side wall and bottom plate to ensure the stability of the foundation excavation. Combining with specific engineering examples, the design method of the side wall and bottom plate of ship-form retaining are introduced. The successful implementation of the engineering case and the monitoring results show that the ship-form retaining can not only avoid the excessively deep embedding of the support piles, but also facilitate the earthwork construction of the soft soil and the protection of the engineering piles. It is safe and reliable. It has certain reference significance for similar projects.
中文标题：
船式支护在基坑中的应用
Application of Ship-form Retaining in Foundation Pit
作者：
何世达,徐忠,李燕枫
He Shida,Xu Zhong,Li Yanfeng
作者简介:何世达,男,1971年生,湖北武汉人,注册土木工程师(岩土),主要从事岩土工程勘察与设计工作。E-mail:464079627@qq.com
通讯地址：
中南勘察基础工程有限公司, 湖北武汉 430081
CentralSouthExploration&FoundationEngineeringCo.,Ltd.,Wuhan430081,Hubei,China
中图分类号:TU473
doi:10.3969/j.issn.1007-2993.2021.01.009
出版物：岩土工程技术
收稿日期:2020-01-10
网络出版日期:2021-07-06
刊出日期:2021-07-06
关键词:深厚软土,基坑,底板加固,支护桩,船式支护
Key words:deep thick soft soil,foundation pit,reinforcement of bottom plate,supporting piles,ship-form retaining
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