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1. 发明授权

US07556451B2 Precast concrete bridge and headwall assembly and method of production 有权
标题翻译：预制混凝土桥梁及后台组装及生产方法
公开(公告)号：US07556451B2
公开(公告)日：2009-07-07
申请号：US11223566
申请日：2005-09-09
申请人： Timothy J. Beach , Jeffrey Von Handorf
发明人： Timothy J. Beach , Jeffrey Von Handorf
IPC分类号： F16L37/00 , F16L49/00
CPC分类号： E01D4/00 , E01D2101/26
摘要： A precast steel reinforced concrete bridge unit has an arcuate top wall integrally connecting opposite side walls, and a series of precast reinforced concrete counterforts are releasably connected to the top wall of the bridge unit at laterally spaced intervals. The counterforts have vertical end surfaces spaced from an end surface of the bridge unit, and end portions of reinforcing bars project from the vertical end surfaces of the counterforts. An end surface of the bridge unit is located on a horizontal casting surface, and a reinforced concrete headwall is cast on the casting surface with the reinforcing bars depending from the counterforts embedded in the concrete forming the headwall. After curing, the concrete headwall and counterforts are removed as a unit from the bridge unit to facilitate handling and shipping of the bridge unit and headwall and counterfort unit.
摘要翻译：预制钢筋混凝土桥梁单元具有一体地连接相对侧壁的弓形顶壁，并且一系列预制钢筋混凝土搅拌器以横向间隔的间隔可释放地连接到桥接单元的顶壁。所述反击件具有与所述桥接单元的端面间隔开的垂直端面，并且所述钢筋的端部从所述反击件的垂直端面突出。桥梁单元的端面位于水平铸造表面上，并且钢筋混凝土墙壁被浇铸在铸造表面上，钢筋从嵌入混凝土中的反浇口形成，形成后壁。固化后，从桥梁单元将混凝土墙壁和反驳装置作为一个单元拆除，以便于桥梁单元和后台和扶手单元的搬运和运输。

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