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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Seismic responses of deep buried pipeline under non-uniform excitations from large scale shaking table test
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Seismic responses of deep buried pipeline under non-uniform excitations from large scale shaking table test

机译：大型振动台试验在非均匀激励下的深埋管道地震响应

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摘要

The seismic response of long deep buried pipeline under non-uniform excitation is very important for suitable seismic design. However, due to restriction by excitation devices, few model tests have been carried out. In this study, a large-scale shaking table model test for a long deep buried pipeline was carried out, where two controlled-independent tables were used to excite two model containers and the excitations for the two tables are in the three directions and non-uniform. From the model test, the strains and deformations of the pipeline and the accelerations of the soil in containers were measured and evaluated. Some results were achieved: (1) non-uniform seismic excitation has great influence on the acceleration amplification in soil and the strain and displacement of the pipeline; (2) the deep buried pipe in ground has few impact on ground surface acceleration response, but has greater impact on the acceleration response of the soil surrounding the pipe; (3) the bending stain and permanent displacement under uniform excitation are negligible, but not neglected for non-uniform excitation; (4) the model test proves that there is obvious rotation of the pipeline in addition to horizontal and vertical displacements under non-uniform excitation.
机译：在不均匀激励下，深埋长管道的地震响应对于合适的地震设计非常重要。但是，由于励磁装置的限制，很少进行模型测试。在这项研究中，我们针对深长的地下管道进行了大型振动台模型试验，其中使用两个独立于控制的工作台来激发两个模型容器，并且两个工作台的激励是在三个方向上进行的，并且没有制服。通过模型测试，测量并评估了管道的应变和变形以及容器中土壤的加速度。取得了一些结果：（1）非均匀地震激励对土壤中的加​​速度放大以及管道的应变和位移有很大的影响； （2）地下深埋管对地表加速度响应影响较小，但对管周围土壤的加速度响应影响较大； （3）均匀激励下的弯曲污点和永久位移可以忽略不计，但对于不均匀激励，则可以忽略不计； （4）模型试验证明，在非均匀激励下，除了水平和垂直位移外，管道还有明显的旋转。

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