焊接接头预应力管桩耐久性研究  

STUDY ON DURABILITY OF WELDING JOINT PRESTRESSED TUBULAR PILE

作　　者：周晓龙[1] 萧凡[2] 廖红 姬耀斌 金波[1] 

机构地区：[1]杭州科技职业技术学院,杭州311402 [2]湖州职业技术学院,浙江湖州313000 [3]江西省赣建工程建设监理有限公司,南昌330000 [4]浙江省工程物探勘察院,杭州310020

出　　处：《建筑技术》2017年第3期311-313,共3页Architecture Technology

基　　金：浙江省建设厅科研课题(2015K127);浙江省自然科学基金(Y1091175)

摘　　要：焊接接头预应力管桩耐久性主要涉及桩身、金属端头、焊接接头耐久性方面,管桩焊缝是管桩传力和保证桩体结构整体性的关键部位,常见施工行为下焊接接头焊缝存在质量隐患,将严重影响接头焊缝的耐久性,针对常见施工行为的焊接接头设计耐久性试验方案,焊接接头预应力管桩寿命评估应建立在特定条件下对管桩桩身、金属端头、连接焊缝等部件耐久性进行综合评价考虑,并从管桩生产、设计、施工环节有效改进管桩整体耐久性。The durability of welding joint prestressed tubular pile is related to the durability of pile body, metal end and welding joint, while the welding of tubular pile is the key point insuring force transfer and structural integrity. The potential quality defect of welding joint under common construction behavior will have serious adverse influence on the welding. The test of service life of welding joint prestressed tubular pile shall take general consideration of the durability of tubular pile body, metal end and welding under specific conditions, and the general durability of tubular pile shall be improved on the aspects of tubular pile production, design and construction.

关 键 词：预应力管桩 焊接接头 耐久性 寿命评估 

分 类 号：TU473.1[建筑科学—结构工程]