京沪高速铁路跨阳澄湖特大桥不同施工方案SS浓度场模拟研究

摘要

为了对比京沪高铁双排筑坝围堰施工和钢栈桥施工两种施工方案对阳澄湖西湖湖区SS浓度场的影响程度,探讨阳澄湖大桥施工方式对阳澄湖SS浓度场的影响规律,开展阳澄湖现状水质监测,采用Delft-3D可视水动力-水质联合模拟软件系统对SS浓度场进行模拟研究。结果表明,相对于栈桥施工,双排筑坝围堰施工对水体SS浓度影响较小,对阳澄湖水环境保护作用明显。%To compare the effects of different construction ways for Beijing-Shanghai high-speed railway on the SS concentration field in the western area of Yangcheng Lake, two alternative construction plans, double row dam cofferdam method or steel trestle method were analyzed. The water quality of Yangcheng Lake was monitored and the SS concentration field was simulated adopting Delft-3D visual water power-water quality joint simulation software. The result showed that the method of double row dam cofferdam construction would affect the SS concentration less than the steel trestle construction. Consequently the former would protect the environment more significantly.