Monitoring and measurement,Mechanical parameter of rock mass,Undersea tunnel," /> Normal Calculation Back Analysis of Dynamic Incremental Displacement and its Application in Tunnel Engineering
 
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MODERN TUNNELLING TECHNOLOGY 2014, Vol. 51 Issue (6) :78-82    DOI:
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Normal Calculation Back Analysis of Dynamic Incremental Displacement and its Application in Tunnel Engineering
(1 Geotechnical and Structure Engineering Research Center, Shandong University, Jinan 250061; 2 Jinan Engineering Vocational Technical College, Jinan 250020)
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Abstract In order to optimize the inversion method for physical and mechanical parameters of tunnel surrounding rock and to improve the computational speed, normal calculation back analysis for dynamic incremental displacement in tunnel engineering is presented in this paper and applied in the Jiaozhou Bay subsea tunnel in Qingdao. With the establishment of an inversion prediction model of elastic-plastic dynamic incremental displacement, and the improvement of traditional elastic-plastic forward-optimized back analysis method, a construction process based inversion normal calculation back analysis of linear elastic dynamic incremental displacement is derived that is used for simplified analysis. A comparison is carried out regarding the calculated displacement and actual displacement in three construction sections of the Jiaozhou Bay subsea tunnel. Study results show that dynamic incremental displacement inversion normal calculation back analysis can reflect the increment measure information in any construction stage during dynamic construction, and guarantee the implementation of deformation control techniques; compared with the traditional elastic-plastic forward-optimized back analysis method, the proposed one increases efficiency and ensures calculation accuracy.
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ZHAO Cheng-Long-1
2
LI Shu-Cai-1
XU Bang-Shu-1
ZHANG Le-Wen-1
Keywords： Dynamic incremental displacement   Normal calculation back analysis   font-family: "Calibri","sans-serif"   mso-bidi-font-size: 11.0pt   mso-fareast-font-family: 宋体   mso-bidi-font-family: "Times New Roman"   mso-font-kerning: 1.0pt   mso-ansi-language: EN-US   mso-fareast-language: ZH-CN   Monitoring and measurement')" href="#">mso-bidi-language: AR-SA">Monitoring and measurement   Mechanical parameter of rock mass   Undersea tunnel     
Abstract： In order to optimize the inversion method for physical and mechanical parameters of tunnel surrounding rock and to improve the computational speed, normal calculation back analysis for dynamic incremental displacement in tunnel engineering is presented in this paper and applied in the Jiaozhou Bay subsea tunnel in Qingdao. With the establishment of an inversion prediction model of elastic-plastic dynamic incremental displacement, and the improvement of traditional elastic-plastic forward-optimized back analysis method, a construction process based inversion normal calculation back analysis of linear elastic dynamic incremental displacement is derived that is used for simplified analysis. A comparison is carried out regarding the calculated displacement and actual displacement in three construction sections of the Jiaozhou Bay subsea tunnel. Study results show that dynamic incremental displacement inversion normal calculation back analysis can reflect the increment measure information in any construction stage during dynamic construction, and guarantee the implementation of deformation control techniques; compared with the traditional elastic-plastic forward-optimized back analysis method, the proposed one increases efficiency and ensures calculation accuracy.
Keywords： Dynamic incremental displacement,   Normal calculation back analysis,   font-family: "Calibri","sans-serif",   mso-bidi-font-size: 11.0pt,   mso-fareast-font-family: 宋体,   mso-bidi-font-family: "Times New Roman",   mso-font-kerning: 1.0pt,   mso-ansi-language: EN-US,   mso-fareast-language: ZH-CN,   Monitoring and measurement')" href="#">mso-bidi-language: AR-SA">Monitoring and measurement,   Mechanical parameter of rock mass,   Undersea tunnel     
published: 2013-08-29
Cite this article:   
ZHAO Cheng-Long-1, 2 , LI Shu-Cai-1 etc .Normal Calculation Back Analysis of Dynamic Incremental Displacement and its Application in Tunnel Engineering[J]  MODERN TUNNELLING TECHNOLOGY, 2014,V51(6): 78-82
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