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《Railway Engineering》 2018-09
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Research on Transverse-tensioning Construction Method for Prefabricated Small Box Beam

LI Lu;GAO Rui;School of Civil and Architectural Engineering,Wuhan University;  
In this paper,the common construction methods at present of the prestressed concrete beams were analyzed.And on this basis,transverse-tensioning prestressed concrete new technology used in small box beam was proposed.By comparing with reserving pipe post-tensioning method and theoretical analysis,the characteristics of transverse-tensioning prestressed concrete were analyzed.By introducing the construction of a box beam,this paper described the process and method of the transverse-tensioning construction method and presented a complete set of construction methods of transverse-tensioning small box beam.Meanwhile,the materials and equipments required to make the transverse-tensioning beam were introduced,and key steps of the transverse-tensioning construction method were pointed out. Finally,with comparison between theory and practice,and between new and old process difficulties,advantages and disadvantages of transverse-tensioning construction method were illustrated.
【Fund】: 湖北省科学技术厅基金(2015B0E069)
【CateGory Index】: U445.57
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