摘要
超高性能混凝土(UHPC)是一种新型水泥基复合材料,具有优异的力学性能和耐久性。与普通混凝土桥梁相比,UHPC桥梁强度高、抗裂性能优,大幅减轻了桥梁自重,利于装配化建设,且具有优异的耐久性;同时,UHPC还可以与钢或普通混凝土(NC)组合,发挥不同材料的性能优势,衍生出种类丰富的钢-UHPC和NC-UHPC组合结构桥梁;此外,将UHPC应用于在役桥梁加固或拓宽改造场景,不仅施工便利,还能显著延长在役桥梁的寿命。因此,通过将UHPC与桥梁工程的痛点需求结合,不仅丰富了桥梁结构的形式,还能进一步提升桥梁的性能和品质,助力桥梁结构的创新发展。对2024年发表在国内中文期刊的相关文献进行了调研和综述,以期归纳和总结UHPC桥梁的最新研究成果。
As an innovative cement-based composite material,ultra-high performance concrete(UHPC)has excellent mechanical behavior and durability.Compared with normal concrete(NC)bridges,high strength and superior anti-cracking behavior make UHPC bridges lighter,more favorable for prefabricated construction,and more durable;Further,UHPC can be composed with steel or NC to make full use of the advantages of different materials.Thus,a number of steel-UHPC and NC-UHPC composite bridge structures can be developed;In addition,UHPC can be used in the fields of in-service bridge strengthening or bridge expansion projects,which is not only convenient in construction but also favorable for extending the service life of bridges.Thus,the combination of UHPC and the practical pain-spot and demand in bridge engineering not only can increase the bridge structure patterns,but also further improves the performance and quality of bridges and is beneficial for the innovative development of bridge structures.The relevant domestic journal papers published in 2024 were investigated and reviewed in this paper,aiming to timely summarize the latest research outcomes for UHPC bridges.
作者
曹君辉
张阳
邵旭东
黄松龄
蔡文涌
张学鹏
Cao Junhui;Zhang Yang;Shao Xudong;Huang Songling;Cai Wenyong;Zhang Xuepeng(College of Civil Engineering,Hunan University,Changsha 410082,China;State Key Laboratory of Bridge Safety and Resilience,Changsha 410082,China)
出处
《市政技术》
2025年第3期1-17,共17页
Journal of Municipal Technology
基金
国家自然科学基金重点项目(52038003)
国家自然科学基金(52378154)
福建省交通运输科技示范工程(SF20210101)。
