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    • 1. 发明授权
    • Stage construction of an elevated box girder and roadway structure
    • 高架箱梁和巷道结构的阶段施工
    • US4123485A
    • 1978-10-31
    • US789223
    • 1977-04-20
    • Man-Chung Tang
    • Man-Chung Tang
    • E01D21/00E04B1/16E01D19/12
    • E01D21/00E01D2101/26E01D2101/28
    • An elongated elevated box girder and roadway structure is constructed in a number of individual elongated sections with the support structure and formwork being reused, in turn, for each section. Each section is constructed in a number of stages. Initially, a support structure is built up from grade or is mounted on permanent upright members of the structure being formed, such as piers or abutments. Formwork for the bottom slab and the upright outside webs of the box girders are placed upon the support structure. Concrete is poured into the formwork for the bottom slab and webs and, after being allowed to set for a given period, and posttensioned, if necessary, the formwork is stripped and the support structure is removed. The support structure and formwork are then moved and set up for the next section to be constructed. The roadway slab includes the top slab of the box girder and cantilever sections extending laterally outwardly from each side of the top slab. The roadway slab is supported from the previously poured bottom slab and webs It can be poured in one or two steps, pouring the entire roadway at one time or first pouring the top slab and then, after supporting the formwork of the cantilever sections from the top slab, pouring the cantilever sections. After the concrete for the roadway sets for a given period, its formwork is stripped, moved and set up for pouring the next section.
    • 细长的高架箱梁和巷道结构被构造在多个单独的细长部分中,其中支撑结构和模板又被再次用于每个部分。 每个部分都是在多个阶段中构建的。 最初,从等级构建支撑结构,或者安装在正在形成的结构的永久性直立构件上,例如桥墩或基台。 用于底板和箱梁的直立外侧腹板的模板放置在支撑结构上。 将混凝土倒入底板和腹板的模板中,并在允许固定一定时间后进行后张,如果需要,将模板剥离并移除支撑结构。 然后将支撑结构和模板移动并设置为要构建的下一部分。 巷道板包括箱梁的顶板和从顶板的每一侧横向向外延伸的悬臂部分。 巷道板坯由先前浇筑的底板和腹板支撑,可以一到两个步骤浇注,一次倾倒整个道路,或者首先浇筑顶板,然后从顶部支撑悬臂部分的模板 板坯,浇注悬臂部分。 在给定时间段的道路混凝土后,其模板被剥离,移动并设置用于浇注下一节。