部分粘接预应力抗拔桩静荷载实验下的桩身受力分析  

Analysis on the Lateral Load Experiment of Part-bonding Prestress Uplift Pile

作　　者：赵乐华[1] 朱世平[1] 杜高恒[1] 许兴云[2] 

机构地区：[1]中国地质大学<北京>工程技术学院,北京100083 [2]江苏三水建设工程有限公司,江苏江堰225500

出　　处：《西部探矿工程》2008年第3期10-13,共4页West-China Exploration Engineering

摘　　要：传统的抗拔桩在承受抗拔荷载时,桩身混凝土受到拉伸,这样导致抗拔桩在没有承受多大的抗拔力的情况下,桩身混凝土已经发生拉伸破坏而产生裂隙,随后桩身钢筋结构锈蚀破坏。预应力抗拔桩有效改善了普通抗拔桩的桩身结构,能充分发挥抗拔桩的承载力,解决了普通抗拔桩所不能解决的问题。部分粘接是解决抗拔桩上施加预应力的一种方法和手段。通过现场实际的部分粘接预应力抗拔桩荷载试验,了解部分粘接预应力抗拔桩的桩身受力情况,为进一步完善预应力抗拔桩的受力机理分析提供了可靠的试验依据。When the traditional uplift pile withstands lateral load, the pile body concrete under the condition which stretches is carried on, Without bear big load, the body concrete of uplift-pile already had the tension failure to produce the crevasse and cause the pile body steel bar structure the rust eclipse destruction. The prestress uplift pile effectively improved the ordinary uplift pile body structure, can fully display the uplift pile bearing capacity, has solved the problem which is ordinary uplift pile cannot solve. The part-bonding is one method to solve how to exert the prestress on the uplift pile. Through the load experiment of the part-bonding prestress uplift pile to understand the body＇s stress situation, which provide the reliable experimental basis for further enhance the stress mechanism analysis of prestress uplift pile.

关 键 词：部分粘接预应力抗拔桩 静载荷试验 钢筋计 抗拔桩侧摩阻力 

分 类 号：TU473.11[建筑科学—结构工程]