通过分析红枫湖特大桥原设计的合拢方案，发现其在实际施工过程中存在一些问题。
Through analyzing the design plan for Hongfeng-Lake bridge, some problems in actual construction are found.
改进经过分析阀门存在的问题，对其结构、止回阀操作及环境进行了改进。
Improved After analysis of valve problems, its structure, operation and environment was improved.
改进经过分析阀门存在的问题，对其结构、止回阀操作及环境进行了改进。
Improved After analysis of valve problems, its structure, operation and environment was improved.
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