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桥梁实施规范(BS5400)目前正在编写之中,其中混凝土桥规范则已出版。本文目的是提供与混凝土桥裂缝控制有关的规范条款的基本背景资料。并着重说明现行建筑规范中所未列入的某些条款,因为它们涉及到在桥梁中而不是在房屋建筑中出现的结构形式或应力状态,例如与裂缝不垂直的钢筋及厚的空心板。文中在适当的地方对规范条款及其含义与目前的桥梁设计实践作了对比。
The Bridge Implementation Code (BS5400) is currently under preparation and the Concrete Bridge Code has been published. The purpose of this paper is to provide basic background information on the specifications of the crack control of concrete bridges. Highlighting some items not included in the current building codes as they relate to structural forms or stress conditions found in bridges rather than in building structures such as rebar and thick hollow slab not perpendicular to the fracture. The text in the appropriate place for the specification terms and their meaning with the current practice of bridge design were compared.