摘要
超高性能混凝土(UHPC)具有良好的力学性能,其抗拉、抗压强度远远超过常规混凝土。同时超高性能混凝土(UHPC)与常规混凝土的浇筑连接面的粘结强度也超过常规混凝土,能与常规混凝土非常好地形成一个整体,因此采用超高性能混凝土(UHPC)将桥梁预制结构连接成整体的施工方法已经被广泛应用。以南浦大桥W3匝道改建工程为背景,介绍了截除部分桥墩立柱后,采用超高性能混凝土(UHPC)连接上下立柱的设计施工要点,表明了超高性能混凝土(UHPC)在类似的桥梁改建项目中具有广泛的应用价值。
Ultra High Performance Concrete(UHPC)has good mechanical properties and ultra-high compressive and tensile strength.The bonding strength of the joint surface between ultra high performance concrete(UHPC)and normal concrete is also ultra high with forming good combination.So the construction method using ultra high performance concrete(UHPC)to connect the prefabricated structure of bridge has been widely used.In this paper,using the reforming of Ramp W3 of Nanpu Bridge as an example,it has been shown that ultra high performance concrete(UHPC)has wide application value in the similar projects of existing bridge reforming.
作者
章烽锋
ZHANG Fengfeng(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092)
出处
《广东公路交通》
2019年第5期31-34,共4页
Guangdong Highway Communications
关键词
UHPC
桥梁改建
施工方法
ultra high performance concrete(UHPC)
existing bridge reforming
construction method
