CAJ | 학술논문

为克服风洞试验存在周期长、成本较高、设备复杂等不足，采用数值模拟提取三分力系数方法对某型装配式钢桁架桥梁典型断面三分力系数进行分析。采用计算流体力学(computational fluid dynamics，CFD)方法，对某型装配式钢桁架桥的三分力系数进行数值模拟。在对数值仿真结果与风洞试验结果对比分析的基础上，对桥梁的3种典型断面三分力系数进行分析，并给出3种典型断面的压力和速度分布图。结果表明：该方法与风洞实验值吻合较好，具有较好的可行性与可靠性，能为该桥的抗风性能分析提供直接的数据支持，并为桥梁结构优化提供参考。
위극복풍동시험존재주기장、성본교고、설비복잡등불족，채용수치모의제취삼분력계수방법대모형장배식강항가교량전형단면삼분력계수진행분석。채용계산류체역학(computational fluid dynamics，CFD)방법，대모형장배식강항가교적삼분력계수진행수치모의。재대수치방진결과여풍동시험결과대비분석적기출상，대교량적3충전형단면삼분력계수진행분석，병급출3충전형단면적압력화속도분포도。결과표명：해방법여풍동실험치문합교호，구유교호적가행성여가고성，능위해교적항풍성능분석제공직접적수거지지，병위교량결구우화제공삼고。
To overcome the long wind tunnel test cycle, the higher costs, complex equipment brought by wind tunnel test, we used numerical simulation method to analyze tri-component force coefficient of a certain fabricated steel truss bridge. By use the computational fluid dynamics method, the tri-component force coefficient of a certain fabricated steel truss bridge was simulated. Based on the comparison between the numerical simulation results and wind tunnel test results, the tri-component force coefficient of 3 typical cross-sections of the bridge was analyzed. The pressure and velocity distribution was obtained. The results show that this method agrees well with the wind tunnel test results and has good feasibility and reliability. It not only provides a direct data support for the analysis of the bridge wind resistance, but also provides a reference for the optimization of the bridge structure.