Study on Seismic Response Law of Multi-Age Buried Steel Pipes Consid- ering Random Corrosion

Zheng Shansuo

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Study on Seismic Response Law of Multi-Age Buried Steel Pipes Consid- ering Random Corrosion

更新时间：2025-09-25

- Study on Seismic Response Law of Multi-Age Buried Steel Pipes Consid- ering Random Corrosion
- Issue 2, Pages: 255-264(2021)
- 作者机构：
  
  西安建筑科技大学土木工程学院,陕西,西安,710055
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU990.3
- Published：2021
- 稿件说明：
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郑山锁,谢孝奎,董淑卿,贺金川,郑淏,龙立.考虑随机腐蚀的多龄期埋地钢管地震响应规律∗[J].防灾减灾工程学报,2021,(2):255-264

Zheng Shansuo. Study on Seismic Response Law of Multi-Age Buried Steel Pipes Consid- ering Random Corrosion[J]. 2021, (2): 255-264.
郑山锁,谢孝奎,董淑卿,贺金川,郑淏,龙立.考虑随机腐蚀的多龄期埋地钢管地震响应规律∗[J].防灾减灾工程学报,2021,(2):255-264 DOI：

Zheng Shansuo. Study on Seismic Response Law of Multi-Age Buried Steel Pipes Consid- ering Random Corrosion[J]. 2021, (2): 255-264. DOI：

摘要

埋地管线作为城市水、气等的重要传输载体，对城市正常功能的运行发挥着不可或缺的作用，由于土壤环境腐蚀的影响，在突发地震作用下极易发生破坏，造成环境污染及资源的浪费。基于随机腐蚀过程，针对多龄期埋地钢管的地震响应规律展开了系统深入的研究：考虑埋地管线腐蚀发生的随机性，建立了基于齐次马尔可夫过程的随机腐蚀发生模型；考虑不同腐蚀环境的影响，建立了酸性环境下的全面腐蚀模型与近中性及碱性环境下的局部腐蚀模型；基于钢材标准试件的加速腐蚀模拟及拉伸破坏试验，建立了考虑随机腐蚀作用的钢材力学性能退化模型及埋地钢管的时变本构模型；采用有限元软件 ANSYS 进行非线性动力时程分析，揭示了不同土壤环境下多龄期埋地钢管的地震响应规律，为埋地钢管的震前加固及震后破坏评价提供理论依据。

Abstract

As an important carrier of urban water and gas transmission，buried pipelines play an indispensable role in the normal operation of cities. Due to the impact of soil environmental corrosion，buried pipelines can be easily destroyed under sudden earthquakes，resulting in environmental pollution and waste of resources. In this paper，on the basis of the stochastic corrosion process，a systematical research was conducted to study the seismic response law of multi-aged buried steel pipes. Considering the randomness of buried pipeline corrosion，a stochastic corrosion occurrence model based on homogeneous Markov process was established. According to the influences of different corrosion environments，a comprehensive corrosion model in an acidic environment and a local corrosion model in nearneutral and alkaline environments were established. Based on the accelerated corrosion and tensile tests of steel standard specimens，a Mechanical Property Deterioration Model of steel and a time-varying constitutive model of buried steel pipe were established and they both incorporated the stochasticcorrosion effects. Then the nonlinear dynamic time-history analysis was conducted on buried steel pipe by using the finite element software ANSYS. And the seismic response law of multi-age buried steel pipe under different soil environments was revealed，which provided a theoretical basis for the preearthquake reinforcement and post-earthquake damage evaluation of buried steel pipe.

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references

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