| XJ Bridge at Zhaoqing is a tied-arch bridge with span arrangement (40.2+52+382+52+48.15)m and arch feet center distance450m, which allows two railway lines. Mechanical behaviors of XJ Bridge in the finished state and construction states is analyzed in this paper. Works and results of this paper is as follows:1. Considering the characteristics of the bridge XJ, the application of the finite element analysis software MIDAS established three different space finite element model, respectively applied for the arch rib self-respect, bridge deck department and the self-respect, the second phase of the constant load analysis. To the three model calculation results stack, get XJ bridge under constant load the stress state.2. The bridge to XJ complete various value the most unfavorable under the influence of live load analysis, temperature load and wind load additional forces analysis. The results show that the bridge static under the influence of live load across the nao than to1/2301, stiffness meet the requirements; All kinds of load combination bridge under the action of the whole stress level is not high, strength whole meet the requirements.3. The bridge to XJ bridge state of the stability and the dynamic performance analysis. The main bridge stability coefficient were working more than10, stable performance is good; The natural frequency of vibration of the bridge meet driving safety requirements, good dynamic performance.4. To XJ bridge construction process analysis. Including the bridge deck is assembled, arch rib construction and the boom the end of each stage, such as cable. Put forward two end of the cable two schemes. The construction process, stress components are smaller, stability meet the requirements, the two end of the scheme are feasible.The result of this paper can be for the design and construction of the bridge XJ provide basis, for other similar structure of the system in the design and construction of the bridge to provide the reference. |
PDF Full Text Request