地震荷载作用下埋地玻璃钢夹砂管的动力响应分析

玻璃钢夹砂管在土木水利工程领域得到了愈来愈广泛的应用,但现有的埋地管道地震响应分析模型大多不考虑管-土动力相互作用,且多针对均质材料管道,无法应用于具有明显层状复合材料结构特征的玻璃钢夹砂管。基于玻璃钢夹砂管的层状复合材料结构特征,建立了完整的埋地玻璃钢夹砂管地震响应分析模型,在数值分析模型中,考虑了管-土间复杂的动力相互作用,以及地震散射波从有限域向无限域的传播。算例分析表明,所建立的埋地玻璃钢夹砂管地震响应分析模型可合理地分析埋地玻璃钢夹砂管在地震荷载作用下的动力响应。

Numerical Analysis of Dynamic Response of Buried FRPM Pipe under Seismic Loading

Fiber Reinforced Plastic Mortar pipes(FRPM pipes) have been widely used in civil and hydraulic engineering.The current seismic analysis models for buried pipes generally ignore the dynamic interaction between pipe and surrounding soil,and most of the models are for homogeneous pipe.For the above-mentioned reasons,the current seismic analysis models for buried pipes cannot be applied to FRPM pipes with laminated structure.The whole seismic analysis model for buried FRPM pipes is presented.The model takes the laminated structure of FRPM pipes into consideration,and the complicated dynamic interaction between pipe and surrounding soil and the propagation of seismic scattering waves from finite field to infinite field are also considered in the presented model.The analysis results of an engineering example show that the proposed model in the paper can rational analyzed the dynamic response of buried FRPM pipe under seismic loading.