厦漳跨海大桥建造的关键技术问题及对策
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摘要
厦漳跨海大桥全长9.333km,分为北汊桥、海门岛立交及收费服务区、南汊桥、海平立交四大部分,工程建设条件复杂(包括地层层状风化严重、海洋强腐蚀环境、多台风、高地震烈度等),对该工程建造过程中的关键技术问题及对策进行总结。针对北汊主桥特殊的工程地质状况,采用调整斜拉桥跨径、设置长短桩、改进钻机等处理措施;为确保大桥结构的耐久性,对混凝土结构采用海工高性能混凝土、阻锈剂,对钢结构采用长效型防腐涂装体系、设置除湿机等防腐措施;为确保南汊、北汊主桥的抗风安全,施工期间采用设置抗风临时墩,运营期间采用设置导流板、阻尼器、减振器等抗风措施;为满足规定的抗震目标,对主桥采用阻尼器、引桥采用滑动限位式铅芯橡胶支座等抗震措施。
The Xiazhang Sea-Crossing Bridge,totally 9. 333 km long,is made up of four major parts of the north bridge,Haimen Island interchange and toll service area,south bridge and Haiping interchange. The construction conditions ( including the severe stratum weathering,strong corrosive marine environment,frequent typhoon visiting and high intensity earthquake) of the bridge are complicated. In this paper,the critical technical problems and countermeasures taken in the construction of the bridge are summarized. In the light of the special engineering geology of the north main bridge,the measures of adjusting the span length of the cable-stayed bridge,utilizing the short and long piles and improving the boring machines were taken. To ensure the durability of the structures of the whole bridge,the corrosion protection measures of the high performance marine concrete and rust inhibitor for the concrete structures and the long-term protection coating system and dehumidifiers for the steel structures were taken. To ensure the wind safety of the south and north main bridges,the wind resistant measures of utilizing the temporary piers in the construction process and the guide vanes,dampers,vibration absorbers at the operation stage were taken and to meet the specified seismic resistance target,the measures of utilizing the dampers for the main bridges and the sliding and limiting lead core rubber bearings for the approach bridges were taken.
The Xiazhang Sea-Crossing Bridge,totally 9. 333 km long,is made up of four major parts of the north bridge,Haimen Island interchange and toll service area,south bridge and Haiping interchange. The construction conditions ( including the severe stratum weathering,strong corrosive marine environment,frequent typhoon visiting and high intensity earthquake) of the bridge are complicated. In this paper,the critical technical problems and countermeasures taken in the construction of the bridge are summarized. In the light of the special engineering geology of the north main bridge,the measures of adjusting the span length of the cable-stayed bridge,utilizing the short and long piles and improving the boring machines were taken. To ensure the durability of the structures of the whole bridge,the corrosion protection measures of the high performance marine concrete and rust inhibitor for the concrete structures and the long-term protection coating system and dehumidifiers for the steel structures were taken. To ensure the wind safety of the south and north main bridges,the wind resistant measures of utilizing the temporary piers in the construction process and the guide vanes,dampers,vibration absorbers at the operation stage were taken and to meet the specified seismic resistance target,the measures of utilizing the dampers for the main bridges and the sliding and limiting lead core rubber bearings for the approach bridges were taken.
引文
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[9]重庆交通科研设计院.厦漳跨海大桥抗震分析与模型试验研究报告[R].重庆:2009.(China Merchants Chongqing Transport Research&Design Institute Co.,Ltd.Report of Analysis and Model Test Study of Seismic Resistance of Xiazhang Sea-Crossing Bridge[R].Chongqing:2009.in Chi-nese)
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[2]王建,任文峰.苏拉马都大桥钻孔桩泥浆性能研究[J].桥梁机械与施工技术,2007,(2):44-46.(WANG Jian,REN Wen-feng.Study on Slurry Character of Suramadu Bridge Bored Pile[J].Bridge Machinery&Construction Technology,2007,(2):44-46.in Chi-nese)
[3]李述宝,赵鹍鹏.海中球状风化地层大直径超长钻孔桩施工技术[J].桥梁建设,2011,(3):85-88.(LI Shu-bao,ZHAO Kun-peng.Construction Techniques for Large Diameter and Very Long Bored Piles in Spheroi-dal Weathering Granite Layer in Sea[J].Bridge Con-struction,2011,(3):85-88.in Chinese)
[4]金伟良,赵羽习.混凝土结构耐久性研究的回顾与展望[J].浙江大学学报(工学版),2002,36(4):371-380.(JIN Wei-liang,ZHAO Yu-xi.State-of-the-Art on Dura-bility of Concrete Structures[J].Journal of Zhejiang Uni-versity(Engineering Science),2002,36(4):371-380.in Chinese)
[5]重庆交通科研设计院.厦漳跨海大桥抗风稳定性分析与试验研究报告[R].重庆:2009.(China Merchants Chongqing Transport Research&De-sign Institute Co.,Ltd.Report of Analysis and Test Study of Wind Stability of Xiazhang Sea-Crossing Bridge[R].Chongqing:2009.in Chinese)
[6]张鸿,罗承斌,张永涛,等.苏通大桥主桥上部结构施工及控制技术研究[J].中国工程科学,2009,(3):85-91.(ZHANG Hong,LUO Cheng-bin,ZHANG Yong-tao,et al.Research of Construction and Control Techniques for Superstructure of Main Bridge of Sutong Bridge[J].Engineering Sciences,2009,(3):85-91.in Chi-nese)
[7]殷峰,李宗平.上海长江大桥主通航孔桥关键施工技术应用及创新[J].上海公路,2009,(1):42-46.(YIN Feng,LI Zong-ping.Application and Innovation of Key Techniques for Main Shipping Channel Bridge of Shanghai Changjiang River Bridge[J].Shanghai High-ways,2009,(1):42-46.in Chinese)
[8]厦漳跨海大桥设计联合体.厦漳跨海大桥工程两阶段施工图设计[Z].重庆:2009.(Design Consortium of Xiazhang Sea-Crossing Bridge.Two-Stage Construction Drawing Design of Xiazhang Sea-Crossing Bridge[Z].Chongqing:2009.in Chi-nese)
[9]重庆交通科研设计院.厦漳跨海大桥抗震分析与模型试验研究报告[R].重庆:2009.(China Merchants Chongqing Transport Research&Design Institute Co.,Ltd.Report of Analysis and Model Test Study of Seismic Resistance of Xiazhang Sea-Crossing Bridge[R].Chongqing:2009.in Chi-nese)
[10]华中科技大学.高烈度地震区连续体系隔震桥梁减震效果理论与试验研究报告[R].武汉:2009.(Huazhong University of Science and Technology.Re-port of Theory and Test Study of Seismic Mitigation Effect of Continuous System Bridge with Seismic Isolators in High-Intensity Earthquake Region[R].Wuhan:2009.in Chinese)
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