本溪衍水大桥施工关键技术

Key Construction Technology for Benxi Yanshui Bridge

本溪衍水大桥主桥为单拱斜塔双索面斜拉桥,主桥主跨采用152m双箱双室钢箱梁,主桥边跨为(48m+42m)双箱双室预应力混凝土现浇箱梁。大桥施工采用的高强度嵌岩钻孔桩旋挖钻快速成孔技术、大体积承台混凝土温控技术及塔梁同步平衡法施工技术施工速度快,安全可靠,为同类桥梁的建造积累了宝贵的经验。

The main bridge of Benxi Yanshui Bridge is a double plane cable stayed bridge with a single - arch leaning tower, the main span of the main bridge adopts a 152m double -box and double -room steel box girder, and the side span of the main bridge adopts a（48m ＋ 42m） double - box and double - room cast - in - situ box girder of prestressed concrete. The bridge construction adopts rapid pore - creating technology for rotary excavating drill of high strength rock - socketed bored pile, temperature control technology for mass concrete of bearing platform and construction technology with synchronized balance method for tower beam, with rapid construction speed and safety and reliability, thus accumulating valuable experience for the construction of similar bridge.