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川藏线“重大桥梁工程”选址原则及实践
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摘要
认识川藏铁路"重大桥梁工程选线"的意义,了解艰险山区桥梁选址的影响因素,探讨重大桥梁选址的原则,为艰险山区跨深沟峡谷的重大桥梁工程选线提供指导性建议。"重大桥梁工程选线"需充分考虑线路走向,桥址处工程地质、水文地质、环境地质、地形及河势条件、行洪及通航条件的影响,进行多桥址方案比选,选择技术可靠、风险可控、投资最省、运营维护最优的桥位,进而确定线位。
To understand the Sichuan-Tibet Railway 'Major Bridge Engineering route selection',and to comprehend the influential factors of bridge site selection in precipitous and mountainous areas,discussing the principles of the major bridge selection in order to provide the guidance and advice for major bridge engineering route selection in precipitous and mountainous areas.'Major bridge engineering route selection' need fully consider effects of the line alignment,engineering geology,hydrogeology,environmental geology,terrain and condition of river,flood and channel navigation conditions at the bridge site.Through the multiple bridge site schemes comparisons,determination of route is based the philosophy of choosing bride site which is technically reliable,riskily controllable,investment saving,optimal operation and maintenance.
引文
[1]朱颖.复杂山区铁路选线原则研究[C]II复杂艰险山区铁路选线与总体设计论文集.北京:人民交通出版社,2012.ZHU YING.Study on the principle of railway route selection on complex precipitous and mountainous areas[C]//Collection of essays:Complex precipitous and mountainous areas route selection and general design.Beijing:China Communications Press,2012.

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