缓粘结预应力抗拔桩应用研究  

APPLICATION OF UPLIFT PILE WITH GENTILY BONDED PRESTRESSED

作　　者：任孟良 刘欢 姜波 李徐 毛宗原 Ren Meng-liang;Liu Huan;Jiang Bo;Li Xu;Mao Zong-yuan

机构地区：[1]中国建筑技术集团有限公司,北京100013 [2]紫光集团有限公司,北京100191 [3]北京京投银泰尚德置业有限公司,北京102200

出　　处：《建筑技术开发》2024年第4期66-69,共4页Building Technology Development

摘　　要：随着我国地下工程的发展,抗拔桩的应用得到普及,为解决传统抗拔桩桩身开裂及无粘结预应力抗拔桩预应力损失问题,将缓粘结预应力技术应用到抗拔桩中,并结合实际工程,介绍缓粘结预应力抗拔桩的桩身构造、技术参数以及施工工艺,通过对比工程原设计抗拔桩,缓粘结预应力抗拔桩可大幅节省钢筋用量,有效节约工程造价与工期。With the development of underground engineering in China,the application of unlift pile has been popularized.In order to solve the problems of cracking of traditional unlift pile and prestress loss of unbonded prestressed unlift pile,the gently bonded prestressed technology is applied.Combined with the practical project,the pile structure,technical parameters and construction technology of the gently bonded prestressed unlift pile are introduced.By comparing the original design of the project,the gently bonded prestressed unlift pile can greatly save the amount of reinforcement,the project cost and construction period.

关 键 词：预应力 缓粘结预应力 抗拔桩 

分 类 号：TU74[建筑科学—建筑技术科学]