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《Journal of Beijing Jiaotong University》 2013-01
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Objective alignment for rapid track beam replacement of straddle monorail transit

ZHONG Minglin,ZHU Eryu,ZHOU Yongzheng(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)  
Prestressed concrete(PC) track beam is the important part of straddle monorail transit.To achieve rapid replacement of PC track beam destroyed by man-made or natural disasters,research on the objective alignment for rapid replacement of track beam must be taken.PC track beam in Chongqing straddle monorail transit is selected as research object to analyze boundary conditions of objective alignment analysis during rapid replacement of PC track beam.The objective alignment analysis method is proposed based on the overall replacement principle.The overall alignment replacement program "Three Circular Curves+Straight Line" comprised of three kinds of circular curves(R=119,190,476 m)and straight line is developed through the objective alignment analysis of plane curve of PC track beam.Analysis results of PC track beam vertical curve show that the vertical curve can be ignored during rapid replacement and the objective alignment can achieve alignment replacement of all types of PC track beam during rapid replacement.
【Fund】: 国家自然科学基金资助项目(50778022);; 高等学校博士学科点专项科研基金资助项目(20110009110016)
【CateGory Index】: U232
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