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| Application of Vacuum Auxiliary Mud Jacking in Construction of Box Girder for Passenger Dedicated Line |
| WU An-feng |
| China Zhongtie Major Bridge Engineering Group, Zhengzhou, Henan 450053, China |
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Abstract Research purposes：This paper mainly describes the main points for the quality control for the construction technology of vacuum auxiliary mud jacking applied in construction of post-tensioned prestressing box girder of Pingyang Bridge of Wenzhou-Fuzhou Passenger Dedicated Line and introduces the experiences and measures for the quality control for the construction technology of vacuum auxiliary mud jacking.
Research conclusions：For construction of the post-tensioned presstressing box girder with traditional mud jacking technology, there are bubble and poisoned rain water in the mud to easily corrupt the pore space and prestressed reinforcement, resulting in reducing durability of the structure. In addition, the jacked mud probably is not compacted and saturated, resulting in pore space to reserve the hidden trouble in quality of the box girder. Application of vacuum auxiliary mud jacking technology can guarantee the compactness of pretressed duct after mud jacking and enhance the durability, security and service life of the structure.
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Received: 05 November 2009
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[ 1 ] 刘秉京.混凝土技术[M].北京:人民交通出版社, 1998.
Liu Bingjing. Concrete Technology[M]. Beijing: Peoples' Communications Press, 1998.
[ 2 ] 铁建设[2005]157号,铁路混凝土结构耐久性设计暂行规定[S].
Railway Construction [2005] No.157, The Railway Interim Provisions on the Durability Design of Concrete Structures[S].
[ 3 ] 铁建设[2005]160号,铁路混凝土工程施工质量验收补充标准[S].
Railway Construction [2005] No.160, Railway Construction Quality Acceptance of Concrete Additional Criteria[S].
[ 4 ] 范立础.桥梁工程[M].北京:人民交通出版社, 1979.
Fan Lichu. Bridge Engineering[M]. Beijing: People 's Communications Press, 1979.
[ 5 ] 铁建设[2005]160号,铁路桥涵工程施工质量验收暂行标准[S].
Railway Construction [2005] No.160, Provisional Standard for Construction Quality and Acceptance of Railway Bridge and Culvert[S].
[ 6 ] 铁科技函[2004]120号,客运专线预应力砼预制梁暂行技术条件[S].
Railway Science and Technology Letter [2004] No.120, Temporary Technical Conditions of Precast Prestressed Concrete Beam s for Passenger Dedicated Line[S].
[ 7 ] TZ 213—2005,客运专线铁路桥涵工程施工技术指南[S].
TZ 213—2005, Technical Guidelines of Bridge and Culvert Construction for Passenger Dedicated Line[S].
[ 8 ] 邓运清.高速铁路简支箱梁设计研究[J]. 铁道标准设计, 2004(7): 125-129.
Deng Yunqing. High-speed Railway Simply Supported Box Girder Design Study [J]. Railway Standard Design, 2004 (7) : 125 -129.
[ 9 ] 王召祜.京沪高速铁路桥梁设计[J]. 铁道科学与工程学报, 2005(10): 13-16.
Wang Zhaohu. Beijing-Shanghai High-speed Railway Bridge Design[J]. Journal of Railway Science and Engineering, 2005 (10) : 13 -16.
[ 10 ]温朝斌,成志伟.真空辅助压浆工艺在客运专线箱梁中的应用[J]. 铁道标准设计, 2007(8): 74 -75.
Wen Chaobin, Cheng Zhiwei. Vacuum-assisted Grouting Technology in Passenger Dedicated Line Box Girder Application[J]. Railway Standard Design, 2007(8) : 74 -75.
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2010, Vol. 27 
