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The design deformation study of the domestic high-speed railway concrete cable-stayed bridge less design for four-wire single-tower cable-stayed bridge , railway , in the canonical basis of comparison countries , the establishment of a full-bridge model using finite element analysis software MIDAS China specification , European norms , the Japanese specification for the bridge inspecting calculation of internal force analysis and deformation limits , according to the results of the analysis and seized count , the bridge design assessment . The analysis showed that: ( 1) China, Europe and Japan have different national conditions , the standard live load each specification there are also differences in the three specifications for the deformation limit requirements of the railway bridge is not the same ; ( 2 ) China Railway Code for bridge dynamic characteristics of the natural vibration frequency limit provisions , at the same time due to the loading bridge vertical deformation , the lateral deformation deck torsional deformation , beam end of vertical corner and pier the lateral horizontal stiffness , etc. , limit provisions . Bridge is in the limit to meet the requirements , but the deck torsional deformation reaches the the specification maximum limit of 1.5mm , it is recommended that the program be modified to enhance the performance of bridges torsional , thereby reducing the torsional deformation ; ( 3 ) enhanced bridge anti twist , the key is to increase the stiffness of a bridge , for the cable-stayed bridge , by increasing the beam , single cable plane on double cable planes and other methods to increase stiffness ; ( 4 ) the use of Eurocodes analysis showed that the vertical , horizontal deformation , beam end of vertical corner to meet the requirements , but the torsional deformation does not meet the requirements , the programs need to be modified , the same need to enhance the bridge torsional ; text (5 ) of the actual train load and norms prescribed standard live load comparison, in the same cloth as set out under the conditions of the internal forces and deformation C62B trucks about in - live load, the internal forces and deformation of 70 % CRH2 type passenger dedicated internal forces and deformation of about ZK live load, Load and deformation of 50% . Therefore , the standard live load relative to the actual train , there are sufficient safety reserves .
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