Analysis of Cable Replacement and Cable Force Adjustment for the Cable-stayed Suspension Pipe Bridge
The research expounds the principle and method of cable force adjustment with analysing the whole bridge structure per-formance after cable replacement on a engineering project of cable-stayed suspension pipe bridge.Combining the finite element model of plane truss and practical method for mutual influence matrix of cable force adjustment,the trial and error method is adopted to de-termine the cable force adjustment scheme,and the pipe stress,deformation and cable force of cable after cable replacement are mo-nitored and analyzed.The results show that it is reasonable and appropriate for the nonlinear super-flexible structure such as cable-stayed and suspension system pipe bridge through finite element simulation,cable force measurement and adjustment meth-od considering nonlinear effect of large deformation of structure.The purpose of cable adjustment is to maintain the stress of the whole bridge structure more reasonable.The linear change of the pipeline after adjustment meets the requirements,and obvious-ly changes the unreasonable stress state of pipe bridge and abnormal pipeline alignment before cable replacement.
cable-stayed suspension systempipe bridgecable replacementcable force adjustmentfinite element analysis
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