基于桥梁改造的新旧混凝土结构植筋加固粘接技术研究  

Research on planting reinforcement bondingtechnologyof old and new concrete structures based onbridge reconstruction

作　　者：项沛 崔力宁[2] 杨彤[1] XIANG Pei;CUI Lining;YANG Tong(Xi’an Railway Vocational&Technical Institute,xi’an 710026,China)

机构地区：[1]西安铁路职业技术学院,陕西西安710026 [2]中交第一公路勘察设计研究院有限公司,陕西西安710000

出　　处：《粘接》2023年第11期98-101,共4页Adhesion

基　　金：西安铁路职业技术学院课题(项目编号:XTZY19G12)。

摘　　要：随着桥梁承受荷载的增加与老化程度的加深,一些桥梁已成危桥,其使用安全性得不到保障,因此对其进行加固与改造是非常必要的。植筋技术是一种在混凝土结构中植入钢筋进行粘接加固的桥梁改造技术,在实际加固工程中较受欢迎。阐述了旧危桥梁新旧混凝土结构加固设计的基本要求与方法,植筋技术原理与加固步骤,探究了新旧混凝土结构植筋技术加固实践,并对该技术应用下新旧混凝土结合面的抗剪强度进行实验设计与测试,提出旧危桥梁加固改造措施和建议。With the increase of bridge load and the deepening of the aging degree,some Bridges have become dangerous bridge,the use of safety is not guaranteed,so it is very necessary to strengthen and transform.The technique of planting reinforcement is a bridge reconstruction technique in which the reinforcement is inserted into the concrete structure to reinforce the bridge.Based on this,the paper expounds the basic requirements and methods of reinforcement design of old and new concrete structures of old and dangerous Bridges,and introduces the principle of reinforcement technology and reinforcement steps.The practice of reinforcing old and new concrete structures by planting reinforcement technology is explored,and the shear strength of new and old concrete joints is designed and tested experimentally.Finally,the measures and suggestions for the reinforcement and reconstruction of the old dangerous bridge are put forward in order to provide reference suggestions for the reinforcement and reconstruction of the concrete structure of the old dangerous bridge.

关 键 词：桥梁改造 新旧混凝土 植筋技术 抗剪强度 粘接加固 

分 类 号：TQ437.1[化学工程] TG494[金属学及工艺—焊接]