路基支挡结构之锚固桩的“方”与“圆”  

"Square"and"Circle"of Anchor Pile in Subgrade Retaining Structure

作　　者：赵振荣 ZHAO Zhenrong(Xi'an Survey,Design and Research Institute Co.,Ltd.of CREC,Xi'an 710054,China)

机构地区：[1]中铁西安勘察设计研究院有限责任公司,西安710054

出　　处：《路基工程》2024年第2期49-54,共6页Subgrade Engineering

摘　　要：从截面抵抗能力、桩土相互作用机理、经济效益和施工角度等多方面,充分论证方形桩与圆形桩的优缺点,改进方形桩成桩工艺并应用于3个施工项目。结果表明:用于边坡支挡的锚固桩,无论从受力性能还是经济性上,方形桩均具有优势,仅是施工工法和施工机具落后于圆形桩;目前方形桩的成孔技术和机械机具已在研发与应用中,并有较成功的经验;相较于圆桩,方桩依然是边坡支护的首选。It is demonstrated the advantages and disadvantages of square pile and circular pile from the aspects of section resistance,pile-soil interaction mechanism,economic benefit and construction.The technology of forming square colum was improved and applied to three construction projects.The result shows that the anchor square pile used for slope support has its advantages in terms of mechanical performance and economy,but the construction method and construction equipment lag behind the circular pile.At the present,the hole forming technologies and mechanical tools of square piles have been in the development and application,and have more successful experience.Compared with circularpiles,square piles are still the first choice for slope support.

关 键 词：锚固桩 支挡结构 截面抵抗能力 桩土相互作用 机械成孔 经济效益 

分 类 号：U213.152.1[交通运输工程—道路与铁道工程]