【摘要】 以某覆土波纹钢管涵工程为依托,通过现场动力特性实验测得了该管涵的自振频率。利用有限元软件ABAQUS建立了相应的有限元模型,计算得到了覆土波纹钢管涵的频率和振型,并将土-钢相互作用模型和只有土体的有限元模型的自振特性进行了对比分析。结果表明:对于覆土波纹钢管涵来说,土体的振动形式在土-钢相互作用整体结构的振动中起主导作用,而波纹钢管涵本身的振动特性表现的并不明显,这一特征和一般地下结构类似。因此,在覆土波纹钢桥涵的抗震分析中可以更多的借鉴一般地下结构的抗震分析方法。更多还原

【Abstract】 Based on a real corrugated steel pipe culvert,the natural frequency of the pipe culvert is measured by field dynamic characteristics experiment,the finite element model is established by using the finite element software ABAQUS. The frequency and mode of the corrugated steel pipe are calculated,and the soil-steel interaction model and the soil modelbased onfinite element method are compared and analyzed. The results show that the vibration form of the soil plays a leading role in the vibration of the whole soilsteel interaction systemof the buried corrugated steel pipe culvert,and the vibration characteristic of the corrugated steel pipe culvert itself is not obvious. This characteristic is similar with general underground structures. Therefore,it is possible to draw more reference to the seismic analysis method of the general underground structure in the seismic analysis of the buried corrugated steel bridge and culvert.更多还原