Published 2020-01-01
“…With an aqueduct as the engineering background,this paper establishes a finite element model of spatial entity by auxiliary pier reinforcement,analyzes the force of each construction
stage before and after the aqueduct reinforcement with consideration to the material nonlinearity of concrete,and compares and analyzes the influence of different
jacking forces on the reinforcement effect.Through calculation and analysis,the following conclusions can be drawn:①The structural stress, deformation and crack width of the aqueduct can be significantly reduced by auxiliary pier reinforcement method.②The reinforcement effect can be enhanced with a suitable
jacking force during aqueduct reinforcement.③When the
jacking force is gradually increased from zero,the vertical displacement of the aqueduct after reinforcement is reduced first and then increased,the maximum principal tensile stress of the aqueduct after
jacking and reinforcement also shows a trend of decreasing first and then increasing.④The
jacking force should not be too large.Otherwise,the upper edge of the aqueduct will easily crack at the mid-
span position and its adjacent position.Comparative calculation and analysis of the
jacking force is required before reinforcement construction.…”
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