Calculation of Cable Force in Construction of Complex Spatial Multi-segment Cable Special-shaped Pylon Cable-stayed Bridge
The shape and structure of the complex spatial multi-segment cable special-shaped pylon cable-stayed bridge are peculiar and complex.Due to the interaction of spatial multi-segment cables,the calculation of cable force in the construction stage has always been the key and difficult points in the design and construction of such bridges.In order to solve this problem,taking the main bridge of Jueshui Bridge I in Suizhou City as the engineering background,combined with the positive iteration method based on the difference value method,the MIDAS Civil finite element analysis software is applied to establish the model of the whole bridge construction stage for its calculation and analysis.The results show that the maximum error between the cable force value of the completed bridge by using the positive iteration method based on the difference value method and the designed cable force value is 0.3％,which meets the calculation accuracy requirements.And the cable force value in the tensioning process is within the design range.
cable-stayed bridgeconstruction stagecable force calculationdifference value methodspatial multi-segment cable
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