预应力混凝土小箱梁单梁静载试验研究  

Study on Load Test of Single Beam of Prestressed Concrete Small Box Girder

作　　者：秦飞 QIN Fei(Liaoning Provincial Communication Planning&Design Institute Co.,Ltd.,Shenyang 110111,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司,沈阳110111

出　　处：《价值工程》2024年第1期71-73,共3页Value Engineering

基　　金：辽宁省交通科技计划项目,基于状态检测和荷载试验相结合的中小跨径桥梁快速检测与评价技术研究(编号:201513)。

摘　　要：荷载试验作为桥梁交工验收的必要手段,可有效评价桥梁结构的整体受力性能、桥梁结构设计是否合理、桥梁施工质量情况、桥梁结构承载能力等,并为桥梁运营阶段的维修、养护和管理提供原始数据。本文通过对某公路实际桥梁预制的2片20m跨径预应力混凝土小箱梁进行单梁静载试验,现场测得2片小箱梁关键截面的挠度、应力数据以及裂缝发展情况,并结合相关标准规范,验证了现场预制的2片20m跨径预应力混凝土小箱梁的受力性能满足设计要求,进而判断桥梁结构刚度、裂缝、强度等指标满足规范要求,研究成果可为同类工程提供参考和借鉴。Load test,as a necessary means of bridge handover and acceptance,can effectively evaluate the overall mechanical performance of the bridge structure,whether the bridge structure design is reasonable,the construction quality of the bridge,the bearing capacity of the bridge structure,etc.,and provide original data for the maintenance and management of the bridge operation stage.This article conducts single beam static load tests on two prefabricated 20m span prestressed concrete small box beams of a certain highway bridge.The deflection,stress data,and crack development of the key sections of the two small box beams are measured on site,and combined with relevant standards and specifications,the mechanical performance of the two prefabricated 20m span prestressed concrete small box beams meets the design requirements,and the bridge structural stiffness,cracks,and The strength and other indicators meet the specification requirements,and the research results can provide reference and reference for similar projects.

关 键 词：桥梁工程 预应力混凝土小箱梁 荷载试验 承载能力 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]