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爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应

杨骁 蒋志云 张敏

杨骁, 蒋志云, 张敏. 爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应[J]. 工程力学, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
引用本文: 杨骁, 蒋志云, 张敏. 爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应[J]. 工程力学, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
YANG Xiao, JIANG Zhi-yun, ZHANG Min. DYNAMICAL ANALYSIS OF A SATURATED SOIL-LINING SYSTEM WITH A DEEPLY BURIED CIRCULAR TUNNEL SUBJIECTED TO A BLAST LOAD[J]. Engineering Mechanics, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
Citation: YANG Xiao, JIANG Zhi-yun, ZHANG Min. DYNAMICAL ANALYSIS OF A SATURATED SOIL-LINING SYSTEM WITH A DEEPLY BURIED CIRCULAR TUNNEL SUBJIECTED TO A BLAST LOAD[J]. Engineering Mechanics, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083

爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应

doi: 10.6052/j.issn.1000-4750.2013.11.1083
基金项目: 国家自然科学基金项目(10872124)
详细信息
    作者简介:

    蒋志云(1990―),男,上海人,硕士生,从事饱和多孔介质研究(E-mail: 1753986976@qq.com);张 敏(1989―),女,山西晋中人,硕士生,从事结构非线性动力分析研究(E-mail: 742226833@qq.com).

  • 中图分类号: O327; TU435

DYNAMICAL ANALYSIS OF A SATURATED SOIL-LINING SYSTEM WITH A DEEPLY BURIED CIRCULAR TUNNEL SUBJIECTED TO A BLAST LOAD

  • 摘要: 考虑隧洞衬砌内壁对爆炸波的反射作用及其负压效应,将衬砌视为弹性介质,研究了深埋圆形隧洞饱和土-弹性衬砌耦合系统在隧洞轴线发生爆炸时的轴对称瞬态动力响应。首先,基于Biot理论和弹性理论,考虑边界条件以及弹性衬砌和饱和土接触面处的连续性条件,利用Laplace变换得到饱和土和弹性衬砌位移、应力和孔隙水压力等在Laplace变换域中的解析表达式。在此基础上,利用Laplace数值逆变换得到其时间域的动力响应,数值分析重点考察了不同隧洞模型和不同爆炸载荷模型对饱和土动力响应的影响,并进行了参数研究。结果表明:爆炸波反射产生的负压效应对饱和土体的动力响应有显著影响。同时,饱和土-壳体衬砌系统、饱和土-弹性衬砌系统和无衬砌饱和土隧洞的响应性态基本一致,但响应周期和幅度依次增大。
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  • 收稿日期:  2013-11-22
  • 修回日期:  2014-03-07
  • 刊出日期:  2015-05-25

爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应

doi: 10.6052/j.issn.1000-4750.2013.11.1083
    基金项目:  国家自然科学基金项目(10872124)
    作者简介:

    蒋志云(1990―),男,上海人,硕士生,从事饱和多孔介质研究(E-mail: 1753986976@qq.com);张 敏(1989―),女,山西晋中人,硕士生,从事结构非线性动力分析研究(E-mail: 742226833@qq.com).

  • 中图分类号: O327; TU435

摘要: 考虑隧洞衬砌内壁对爆炸波的反射作用及其负压效应,将衬砌视为弹性介质,研究了深埋圆形隧洞饱和土-弹性衬砌耦合系统在隧洞轴线发生爆炸时的轴对称瞬态动力响应。首先,基于Biot理论和弹性理论,考虑边界条件以及弹性衬砌和饱和土接触面处的连续性条件,利用Laplace变换得到饱和土和弹性衬砌位移、应力和孔隙水压力等在Laplace变换域中的解析表达式。在此基础上,利用Laplace数值逆变换得到其时间域的动力响应,数值分析重点考察了不同隧洞模型和不同爆炸载荷模型对饱和土动力响应的影响,并进行了参数研究。结果表明:爆炸波反射产生的负压效应对饱和土体的动力响应有显著影响。同时,饱和土-壳体衬砌系统、饱和土-弹性衬砌系统和无衬砌饱和土隧洞的响应性态基本一致,但响应周期和幅度依次增大。

English Abstract

杨骁, 蒋志云, 张敏. 爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应[J]. 工程力学, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
引用本文: 杨骁, 蒋志云, 张敏. 爆炸荷载作用下深埋圆形隧洞饱和土-衬砌系统的动力响应[J]. 工程力学, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
YANG Xiao, JIANG Zhi-yun, ZHANG Min. DYNAMICAL ANALYSIS OF A SATURATED SOIL-LINING SYSTEM WITH A DEEPLY BURIED CIRCULAR TUNNEL SUBJIECTED TO A BLAST LOAD[J]. Engineering Mechanics, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
Citation: YANG Xiao, JIANG Zhi-yun, ZHANG Min. DYNAMICAL ANALYSIS OF A SATURATED SOIL-LINING SYSTEM WITH A DEEPLY BURIED CIRCULAR TUNNEL SUBJIECTED TO A BLAST LOAD[J]. Engineering Mechanics, 2015, 32(5): 138-146. doi: 10.6052/j.issn.1000-4750.2013.11.1083
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