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地面爆炸荷载作用下土埋管道的动力响应研究 被引量:5
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作者 纪冲 汤晓勇 +1 位作者 汤建平 李强 《天然气与石油》 2014年第6期1-4,8,共4页
基于动力有限元程序LS-DYNA及Euler-Lagrange耦合方法,分别以75 g柱状和200 g块状TNT炸药为爆源,对管道在爆炸载荷作用下的非线性动态响应过程进行三维数值模拟,描述了管道在不同埋深和壁厚的动力响应,并与实验结果进行了对比。研究结... 基于动力有限元程序LS-DYNA及Euler-Lagrange耦合方法,分别以75 g柱状和200 g块状TNT炸药为爆源,对管道在爆炸载荷作用下的非线性动态响应过程进行三维数值模拟,描述了管道在不同埋深和壁厚的动力响应,并与实验结果进行了对比。研究结果为人防工程油气管道的抗爆能力分析和安全性评估提供了重要的参考依据。 展开更多
关键词 地面爆炸 冲击荷载 土埋管道 数值模拟 动力响应
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Design Guidelines for Buried Profile-Wall Pipe
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《Journal of Civil Engineering and Architecture》 2012年第1期26-43,共18页
The overall objective of this study was to provide guidance for proper design of profile-walled pipe. Data from buried pipe tests on HDPE pipes with thirteen different profiles were included in the study. These tests ... The overall objective of this study was to provide guidance for proper design of profile-walled pipe. Data from buried pipe tests on HDPE pipes with thirteen different profiles were included in the study. These tests were run in the soil cell at Utah State University. Also, parallel plate tests were also completed on the pipe samples. Data from 39 buried pipe tests were analyzed. The buried tests were at 75, 85 and 95 percent of standard Proctor density. This paper summarizes the results of that study and focuses on the tests buried in 85 percent dense soil. In addition to the experimental data, a portion of this paper focuses on finite element analysis results to confirm and extend the results from the physical tests. Design limits are recommended for several dimensionless parameters that describe profile geometry. One of the significant conclusions of this study was that pipes with profiles that perform well when buried in soil also perform well in a parallel plate tests. The identities of the pipe manufacturers are not disclosed, and pipes are only described in terms of basic parameters such as cross-sectional area and area moments of inertia. 展开更多
关键词 PIPE BURIED profile-wall guidelines.
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