岳阳南湖大桥旧桥爆破拆除

Mining Technology(2018)

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Abstract
岳阳市南湖大桥旧桥位于新建大桥及三眼桥之间,东侧距新建桥只有0.1m,西侧20 m处三眼桥为省级保护文物;待爆破拆除桥梁为钢筋混凝土中承式箱拱桥,纵梁及拱肋等主要受力结构均为薄壁箱梁结构.根据南湖大桥旧桥的结构特点、周边环境及工程要求,采用浅孔爆破、水压爆破、分段延期及定向倾倒等多项控制爆破技术,使桥梁分段解体并向西侧坍塌.爆破按设计倾倒坍塌,拱肋向西倾倒,新桥、三眼桥及其他需保护的建(构筑)物安全无损.
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