地震动竖向分量对铁路房屋的地震响应性能影响
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摘要
为了提高铁路房屋的抗震能力,分析地震动竖向分量对铁路房屋的地震响应性能,提出基于荷载—变形关系联合评估的地震动竖向分量对铁路房屋的地震响应评估模型。构建地震动竖向分量的力学响应评估模型,识别铁路房屋的地震屈服响应参数,采用荷载—变形关系和极限荷载结合的方法进行铁路房屋的地震屈服响应应力评估,分析地震动竖向分量对铁路房屋的响应。建立动量平衡方程和弯矩平衡方程,构建铁路房屋的地震响应的三阶段荷载—变形模式,实现地震动竖向分量对铁路房屋的地震响应性能评估模型的优化设计。测试结果表明,采用该模型能有效分析地震动竖向分量对铁路房屋的地震响应性能影响, Simulink仿真结果和有限元模拟结果的准确性较高,力学参数辨识性能优越,计算结果准确可靠。
In order to improve the seismic capacity of railway buildings, effect of vertical components of ground motion on seismic response of the buildings is analyzed, and an evaluation model of seismic response of railway buildings based on joint assessment of load-deformation relation is proposed. The mechanical response evaluation model of vertical component of ground motion is constructed, the seismic yield response parameters of railway buildings are identified, and the seismic yield response stress of railway buildings is evaluated by the combination of load-deformation relation and limit load. The response of vertical component of earthquake ground motion to railway building is analyzed. The momentum equilibrium equation and bending moment equilibrium equation are established to construct the three-stage load-variation of earthquake response of railway buildings and to optimize the evaluation model of seismic response performance of railway buildings with vertical components of ground motion. The test results show that the model can effectively analyze the effect of vertical component of ground motion on seismic response of railway buildings. Simulink simulation results and finite element simulation results have higher accuracy, superior identification performance of mechanical parameters and accurate and reliable calculation results.
In order to improve the seismic capacity of railway buildings, effect of vertical components of ground motion on seismic response of the buildings is analyzed, and an evaluation model of seismic response of railway buildings based on joint assessment of load-deformation relation is proposed. The mechanical response evaluation model of vertical component of ground motion is constructed, the seismic yield response parameters of railway buildings are identified, and the seismic yield response stress of railway buildings is evaluated by the combination of load-deformation relation and limit load. The response of vertical component of earthquake ground motion to railway building is analyzed. The momentum equilibrium equation and bending moment equilibrium equation are established to construct the three-stage load-variation of earthquake response of railway buildings and to optimize the evaluation model of seismic response performance of railway buildings with vertical components of ground motion. The test results show that the model can effectively analyze the effect of vertical component of ground motion on seismic response of railway buildings. Simulink simulation results and finite element simulation results have higher accuracy, superior identification performance of mechanical parameters and accurate and reliable calculation results.
引文
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[2]王伟,廖芳芳,陈以一.基于微观机制的钢结构节点延性断裂预测与裂后路径分析[J].工程力学,2014,31(3):101-108.
[3]位三栋,马跃强,彭斌,等.超高性能混凝土加固历史保护建筑砖砌体承重墙性能试验研究[J].建筑结构学报,2018,39(2):284-289.
[4]臧传君.对建筑改造工程结构加固技术研究分析[J].工程技术研究,2018(15):233-234.
[5]郑世杰,郭树勋,杨锐.混凝土裂缝问题的研究及防治措施[J].施工技术,2018,47(1):1762-1765.
[6]李健,罗永峰,郭小农,等.双层钢板组合剪力墙抗震性能试验研究[J].同济大学学报(自然科学版),2013,41(11):1636-1643.
[7]赵顺增,李长成,贾福杰,等. HCSA补偿收缩混凝土收缩裂缝自愈合性研究[J].混凝土,2018(09):1-3.
[8]梁佶,文兴红,杨铭钊,等.昆明某老建筑的隔震加固设计[J].工程抗震与加固改造,2019,41(01):132-136.
[9]白雪见,任栋,贾源源,等.汶川8.0级大震的余震最大强度用科里奥利力效应方法的判定[J].地震工程学报,2018,40(05):1073-1077.
[10]李英民,刘烁宇,戴明辉.长周期地震动及其在超高层建筑抗震校验中的应用[J].土木工程学报,2018,51(11):53-60.