无黏结后张预应力抗拔桩施工技术  被引量:2

Construction Technology of Unbonded Post-tensioned Prestressed Uplift Pile

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作  者:杜鹏 DU Peng(China Railway Construction Engineering Group,Guangzhou,Guangdong 511400,China)

机构地区:[1]中铁建工集团有限公司,广东广州511400

出  处:《建筑施工》2022年第2期266-268,共3页Building Construction

摘  要:结合广州白云火车站工程实际情况,对无黏结后张预应力抗拔桩施工技术进行了介绍。从预应力抗拔桩技术原理、关键工艺等方面,总结了实施效果和效益。工程实践表明,预应力抗拔桩技术可有效解决传统抗拔桩的裂缝与耐久性问题,并可大幅度节约工程造价与工期,经济效益可观,具有良好的推广应用价值。Combined with the actual situation of Guangzhou Baiyun railway station project,the construction technology of unbonded post-tensioned prestressed uplift pile is introduced.The implementation effect and benefit are summarized from the technical principle and key technology of prestressed uplift pile.The engineering practice shows that the prestressed uplift pile technology can effectively solve the crack and durability problems of the traditional uplift pile,and can greatly save the project cost and construction period,with considerable economic benefits,and has good popularization and application value.

关 键 词:无黏结预应力 后张法 抗拔桩 裂缝控制 

分 类 号:TU753[建筑科学—建筑技术科学]

 

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