Safe Range of Retaining Pressure for Three-dimensional Face of Pressurized Tunnels based on Limit Analysis and Reliability Method
Safe Range of Retaining Pressure for Three-dimensional Face of Pressurized Tunnels based on Limit Analysis and Reliability Method
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基于极限分析和可靠度法的加压隧道三维面保持压力安全范围
DOI：
10.1007/s12205-017-0619-5
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发表时间：
2018-10
影响因子：
2.2
通讯作者：
Meng Fei
中科院分区：
文献类型：
--
作者：
Zhang Jia hua;Wang Wei jun;Zhang Dao bing;Zhang Biao;Meng Fei
基于现有研究，构建了受压隧道掌子面三维主动和被动破坏机制。利用切线技术将非线性失效准则引入到极限分析中。忽略土体参数的随机性，得到主动破坏的塌陷压力和被动破坏的井喷压力，即挡土压力的下限和上限，以及破坏范围。鉴于土体性质的随机性，建立了加压隧道掌子面三维随机模型，并根据多种相关破坏模式给出了加压隧道掌子面保压的最佳范围。以长沙地铁2号线为例，现场实测数据与挡土压力合理范围吻合良好，验证了本文方法的有效性。极限分析与可靠度方法相结合，可为今后加压隧道施工提供更加科学合理的支护参数。
Based on the existing research, the 3D active and passive failure mechanisms of a pressurized tunnel face are constructed. The nonlinear failure criterion is introduced into the limit analysis by virtue of the tangent technique. By neglecting the randomness of soil parameters, the collapse pressure of active failure and the blowout pressure of passive failure, namely the lower and upper limit of retaining pressure, are obtained along with the failure ranges. On account of the randomness of soil properties, a three-dimensional stochastic model of a pressurized tunnel face is established, and the optimal range of retaining pressure of the pressurized tunnel face is presented on the basis of the multiple correlated failure modes. Taking Changsha Metro Line 2 as an example, the good agreement of the measured data in situ with the reasonable range of retaining pressure verifies the presented method. The combination of limit analysis and reliability method can provide more scientific and reasonable support parameters for the construction of pressurized tunnels in the future.
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DOI：
--
发表时间：
2000-11
期刊：
--
影响因子：
--
作者：
A. Soubra
通讯作者：
A. Soubra
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影响因子：
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作者：
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DOI：
10.1061/(asce)gt.1943-5606.0000867
发表时间：
2013-09
影响因子：
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作者：
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通讯作者：
Tang, Jingzhou
DOI：
10.1061/(asce)gt.1943-5606.0000194
发表时间：
2010-01-01
影响因子：
3.9
作者：
Mollon, Guilhem;Dias, Daniel;Soubra, Abdul-Hamid
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Soubra, Abdul-Hamid