Analysis ofContinuous Rigid FrameBridgeJackingForceCalculation andOptimization

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Analysis ofContinuous Rigid FrameBridgeJackingForceCalculation andOptimization

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[1]LI JielCHEN Bin.Analysis ofContinuous Rigid FrameBridgeJackingForceCalculation andOptimization[J].Journal of Zhengzhou University (Engineering Science),2013,34(06):85-89.[doi:10.3969／j.issn.167l一6833.2013.00.021]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 34 Number of periods: 2013 06 Page number: 85-89 Column: Public date: 2013-12-30

Title:: Analysis ofContinuous Rigid FrameBridgeJackingForceCalculation andOptimization

Author(s):: LI Jiel．CHEN Bin; 1.Sch001 of Civil Engineering，Zhengzhou University，Zhengzhou450001，China；2.Henan HighwaySupervision Consultation Co．Ltd．，Zhengzhou450000，China)

Keywords:: Continuous rigid frame bridge; closure; jacking force; temperature correction

CLC:: U441

DOI:: 10.3969／j.issn.167l一6833.2013.00.021

Abstract:: Taking the Baishuiyu bridge as the back ground，using the finite element software MIDAS／Civil to buih the space beam finite element modelof five span continuous rigid frame bridge，horizontaldisplacement of the finished bridge’s main girder is analyzed under differentjackingforce，then effect among the closure’s temperature．jacking forceand horizontal displacement is discussed．Through numerical calculation and con‘ trast。it drawsthe conclusion that the relationbetweenjackingforceand horizontal displacement are linearvar。iation．The effect of iacking force of the side middle span and middle span to pier top’s horizontal displace。ment is different．When iackingforce of sidemiddle span is increased，it is favorable to the side span’s main pier of the horizontal displacement and unfavorable to the middle span’s main pier of the horizontal displace。ment．When iackingforce of middle span is increased，it is favorable to all main pier of the horizontal dis。Dlacement．So to the five span continuous rigid frame bridge，it should preferentially adjust jacking force of main span．Finally．according to temperature of the fact site，to use relation between closure’s temperature andhorizontal displacement，jacking force is adjusted to optimize thejacking force．

References:: [1]徐建国,陈淮,王博,等．连续箱梁桥力学性能分析[ J]．郑州大学学报:工学版,2004,25( 1 ):28 - 30.
[2]张刚刚,吴重男．连续刚构桥合龙段顶推力设计探讨[J.中外公路,2011,35(5) :119- 122.

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