| 大桥深水基础方案设计与施工及经济性研究 |
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| 引用本文： | 杨进.大桥深水基础方案设计与施工及经济性研究[J].桥梁建设,2011(2). |
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| 作者姓名： | 杨进 |
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| 作者单位： | 中铁大桥勘测设计院有限公司,湖北武汉,430050 |
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| 摘 要： | 大桥深水基础方案设计在技术上如能很好地与环境相适应,可以达到经济上更合理,现以2座大桥基础工程实例进行分析。肇庆西江公铁两用大桥水中4号墩基础外形与高承台管柱基础基本相似,采用全钢外壳,由于在施工中无需承受震动打桩机的强力冲击,所以结构截面比较轻型,用钢量并不高,且有相当一部分系使用后可以回收的常备式杆件,故在经济上更具优势而且工期也短。泰州长江公路大桥中塔沉井基础高76 m,分为12节,沉井平面布置12个大井孔,与当时在长江中习惯采用的大直径深钻孔集群桩基础方案相比,该沉井基础在材料上更节省,工艺上更简单,且在受力性能和经济性方面明显占优,具有明显的技术优势。
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| 关 键 词： | 桥梁基础 双承台 浮运沉井 构造 经济性 施工性 |
Study of Design Solutions,Construction and Economy of Deepwater Foundations for Major Bridges |
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| YANG Jin.Study of Design Solutions,Construction and Economy of Deepwater Foundations for Major Bridges[J].Bridge Construction,2011(2). |
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| Authors: | YANG Jin |
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| Institution: | YANG Jin(China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430050,China) |
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| Abstract: | If the design solutions of deepwater foundations for major bridges can technically accommodate very well the environment where the foundations are located,the solutions will be economically still more rational.The practical examples of the foundations of two major bridges are cited herewith and analyzed.The outline of the foundation for in-water Pier No.4 of Zhaoqing Xijiang River Rail-cum-Road Bridge,used with complete steel shell,is basically similar to the foundation of the cylindrical shafts with elevat... |
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| Keywords: | bridge foundation twin pier bases caisson floating structural formation economy construction |
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