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随着社会的进一步发展,新型和高难度、大跨径的公路桥梁不断涌现。承台作为桥梁工程不可缺少的承载结构,在体积上越来越大,故在施工工艺和方法上要不断更新。桥梁承台是桥梁工程中重要的组成部分,由于自身的结构特点,它属于大体积混凝土的施工。大体积混凝土因其结构厚、体积大、钢筋多、施工技术要求高等特点,施工中对其强度、刚度、稳定性、耐久性及温度控制的要求很高,所以要加强对桥梁承台施工实施有效的控制,这对整个桥梁今后的使用和安全起着重要的作用。本文以水城至盘县高速公路北盘江特大桥为例来讨论桥梁大体积承台的施工方法。
With the further development of society, new-typed and difficult, long-span highway bridges continue to emerge. As an indispensable load bearing structure of bridge project, the cap is getting bigger and bigger in volume, so it should be continuously updated in the construction technology and method. Bridge cap is an important part of bridge engineering, because of its structural characteristics, it belongs to the construction of mass concrete. Because of its thick structure, large volume, heavy reinforcement and high technical requirements of construction, mass concrete requires high strength, rigidity, stability, durability and temperature control during construction. Therefore, it is necessary to strengthen the construction of bridge cap Effective control, which plays an important role in the future use and safety of the entire bridge. This paper discusses the construction method of large-sized bridge caps in the case of Beipanjiang Bridge from Shuicheng to Panxian Expressway.