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海南琼海市万泉河东太大桥改建工程完工通车

2017-08-29 17:40:42   央广网

央广网海口8月29日消息(记者朱永 通讯员陈长吉 程剑花)昨天(2017年8月28日)上午,琼海市万泉河东太大桥改建工程完工通车。

东太大桥位于琼海市县道中峻线(中原镇至东太农场峻口)K29+500处,跨越万泉河,是东太农场及会山镇万泉河西岸近3万群众唯一的陆路通道,由海南省公路管理局琼海分局管养。2016年10月18日上午,该桥改建期间因施工便桥受台风“莎莉嘉”洪水冲断,东太农场成为孤岛群众无法出行而倍受社会关注。

该桥改建后桥梁上部构造为6-30米预应力混凝土小箱梁桥,全长 187 米,全宽 12.5 米,净宽 10米,桥梁荷载等级采用公路-Ⅰ级,设计洪水频率为50年一遇,抗震设防等级为6度。该改建工程项目业主为海南省公路管理局,由中交公路规划设计院有限公司代建。

据介绍,原东太大桥始建于1972年初,为2-70米钢筋混凝土双曲拱桥,长度约为174米,桥面全宽为7.4米,净宽6.4米。由于原桥结构钢材用量少,横向连接能力及整体结构性能差且年久失修等原因,改建之前出现腹拱圈、拱波与拱肋结合处及桥台多处开裂,严重渗水等病害,存在严重的安全隐患,被鉴定为四类桥。

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