Study On The Construction Of The Suspension Bridge Deck System And Its Mechanical Properties

The stable type suspension bridge due to anti tensioned structure increases,the bridge is located in the pre state,the overall stiffness increases,resulting in a substantial increase in the stability of bridge deck design.Unlike the ordinary suspension bridge that can be obtained by increasing the weight of the bridge bridge gravity stiffness,but only to meet the bridge static and dynamic effect the stiffness and strength can load the need.Therefore,the bridge structure can be designed to be more thin and light,to play the role of material and reduce the cost.In this paper,the structure and mechanical properties of the bridge deck system are studied,and the different structural forms are compared and analyzed to optimize the structure and layout.The main research work and achievements are as follows:1.As the induction and statistical analysis and structural parameters of the bridge type 1 of stable type suspension bridge in the analysis of characteristics of type selection.The structural characteristics and structural types of bridges.The conventional control of the original design and the I-shaped bridge concrete bridge scheme design as stiffened square beam beam scheme,comparative analysis of technical and economic characteristics of the thickness of concrete deck.2.Related theory analysis of suspension bridge,intends to choose the large-scale general finite element software ANSYS as the structure analysis software.In the solving process can be seen in many aspects,computing model of bridge linkage.Prior to the opening of the beam,beam and beam of closed sealing,find the mechanical section of good performance.The mechanical analysis of its application in the stable type suspension bridge.3.According to the loading of the bridge deck,designed three kinds of bridge structure,structure and method for the three kinds of static state of the application of finite element strength and stiffness analysis,especially stiffness analysis of torsion.Choose the bridge structure form good mechanical properties.4.Establish a finite element model of stable type suspension bridge.Considering the geometric nonlinear characteristics of the bridge in the three deck system in full bridge system under the condition of the bridge under the most unfavorable static load lateral deformation and torsion deformation on the structure.In order to improve the overall performance for structure determination of deck.5.The inherent characteristics of the bridge are calculated and compared with the existing results,the influence of the change of the bridge deck system on the inherent characteristics of the bridge is studied.Through the above aspects so as to find out the most suitable type of stiffening girder.The stable type suspension bridge can be optimized further on the stability of suspension bridge.Based on the static characteristics,structure characteristics and dynamic characteristics of comparison,find out the optimization model of stable type suspension bridge.