某预应力混凝土T梁桥病害检查与处治  

Inspection and Treatment of Diseases of a Prestressed Concrete T-Beam Bridge

作　　者：陈思鹏 CHEN Sipeng(Jiangsu Expressway Company Limited,Nanjing Jiangsu 210000,China)

机构地区：[1]江苏宁沪高速公路股份有限公司,江苏南京210000

出　　处：《北方建筑》2023年第6期26-30,共5页Northern Architecture

摘　　要：为了研究某预应力混凝土T梁桥开裂病害的原因及病害加固的方法,本文以某高速公路中一座预应力混凝土T梁桥作为研究对象,阐述了该桥的病害情况、检查手段、病害原因及加固手段。研究结果表明,T梁桥加固后5#梁实测动位移分布在0~0.5 mm区间内,振动幅度显著减弱,裂缝受温度及荷载作用下的宽度变化量较小,证明了加固措施的有效性,可为同类T梁桥病害分析及加固处理提供参考。In order to study the causes of cracking disease of a prestressed concrete T-beam bridge and the methods of strengthening the disease,this paper takes a prestressed concrete T-beam bridge of an expressway as the research object,expounds the disease situation,inspection means,disease causes and reinforcement means of the bridge.The research results show that the measured dynamic displacement of 5#beam after T-beam bridge reinforcement is in the range of 0~0.5 mm,the vibration amplitude is obviously weakened,and the width change of cracks under the action of temperature and load is small,which proves the effectiveness of reinforcement measures,and can provide reference for disease analysis and reinforcement treatment of similar T-beam bridges.

关 键 词：简支T梁桥 钢绞线锈断 注浆不密实 维修加固处治 

分 类 号：TU755[建筑科学—建筑技术科学]