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Estimation of Applicability of Empirical Design Procedure for Predicting Seismic Response of Buried Gas Pipelines through 3D Time-history Analysis

机译:利用三维时程分析预测埋地燃气管道地震反应经验设计程序的适用性

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摘要

??????? ?????? ??? ???? ??? ?? ????. ????? ???? ???? ????? ?? ??? ??? ??? ??? ??? ??? ???? ???? ??? ???? ??? ????? ?? ????? ?? ???? ??? ??? ??. ? ????? 1?? ??????? ???? ??????? ??-????? ??????, ?? ??? ??????? ???? ???? ??? ?????. ???? ??? ????? 3?? ?-??? ??? ???? ?????. ???????? ??? ??? ????? ???? ?? ???? ?????. ?? ??, ??? ???? ???? ??????? ???? ?? ??? ????. ??? ????? ???? ????? ???? ??? ??? ? ??? ??? ????? ??? ? ?? ??? ????. ??, ??? ?? ??? ??? ??? ??, ???? ??? ??? ???? ???? ??? ??? ?? ??? ??? ????. ? ?? ??? ????? ??? ??? ??????? ????? ??? ?? ???? ??? ?????? ? ??? ??? ?? ?? ??? ?? ???? ????? ??? ???? ? ??? ???? ?? ????. Longitudinal strain is an important component of seismic design for buried pipelines. A design procedure which determines the wavelength from site natural period and shear wave velocity of the soil layer and closed-form solutions of pipelines under a harmonic motion is typically used in design. However, the applicability of the procedure has not yet been thoroughly investigated. In this paper, displacement-time histories extracted from 1D site response analyses are used in 3D shell-spring model to accurately predict the response of pipelines. The results are closely compared to those from the design procedure. The area of interest is East Siberia. Performing a site response analysis to determine site specific displacement time history is highlighted. The site natural period may be used to predict the predominant period of the acceleration time history, but cannot be used to estimate the predominant period of the displacement time history. If an accurate estimate of the predominant period of the displacement time history is provided, it is demonstrated that the design equation can be successfully used to predict the response of pipelines.
机译:??????? ?????? ??? ???? ??? ?? ????。 ?????? ???? ???? ?????? ?? ??? ??? ??? ??? ??? ??? ???? ???? ??? ???? ??? ?????? ?? ?????? ?? ???? ??? ??? ??。 ? ?????? 1 ?? ??????? ???? ??????? ??-?????? ??????,?? ??? ??????? ???? ???? ??? ?????? ???? ??? ?????? 3 ?? ?-??? ??? ???? ?????? ????????? ??? ??? ?????? ???? ?? ???? ?????? ?? ??,??? ???? ???? ??????? ???? ?? ??? ????。 ??? ?????? ???? ?????? ???? ??? ??? ? ??? ??? ?????? ??? ? ?? ??? ????。 ??,??? ?? ??? ??? ??? ??,???? ??? ??? ???? ???? ??? ??? ?? ??? ??? ????。 ? ?? ??? ?????? ??? ??? ??????? ?????? ??? ?? ???? ??? ?????? ? ??? ??? ?? ?? ??? ?? ???? ?????? ??? ???? ? ??? ???? ?? ????。纵向应变是地下管道抗震设计的重要组成部分。在设计中通常使用一种设计程序,该程序根据场地自然周期和土层的剪切波速度以及在谐波运动下管道的封闭形式解来确定波长。但是,该程序的适用性尚未得到彻底研究。在本文中,从1D场地响应分析中提取的位移时间历史记录用于3D壳弹簧模型中,以准确预测管道的响应。将结果与设计过程中的结果进行了紧密比较。地区是东西伯利亚。突出显示了执行站点响应分析以确定站点特定的位移时间历史。站点自然周期可用于预测加速时间历史的主要时段,但不能用于估计位移时间历史的主要时段。如果提供了位移时间历程的主要周期的准确估计,则表明设计方程可以成功地用于预测管道的响应。

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