• 已选条件:
  • × Jun Wan
 全选  【符合条件的数据共:209条】

来源:Advances in Mathematical Physics , 2015

作者:Jun Wang, Lu Xiao, Tao Xie

使用许可:署名(BY)

预览  |  原文链接  |  全文  [ 浏览:9 下载:5  ]     分享

来源:Advances in Materials Science and Engineering , 2015

作者:Jun Wang, Haohao Ma, Xiaolin Weng

使用许可:署名(BY)

预览  |  原文链接  |  全文  [ 浏览:11 下载:5  ]     分享

This paper presents a model test, used on the tunnels on Xi’an Metro Line 2, as the prototype for evaluating the reinforcing effect of the anchor rod in tunnel construction in loess areas. An independently designed fiber Bragg grating (FBG) sensor was used to monitor the seven strain conditions of the rock bolts during the construction. The result shows that the axial stress of the rock bolt changes after the excavation and increases steadily with the growing pressure in the wall rock. Results additionally show that the anchor rods at the tunnel vault are subjected to a compressive stress that remains relatively constant after the primary and the secondary lining, while those at the spandrel and the corner of the tunnel are subjected to increased tensile stress. This paper demonstrates the feasibility and the superiority of FBG technology for tunnel model tests.

    来源:Advances in Mathematical Physics , 2015

    作者:Jun Wang, Lu Xiao, Tao Xie

    使用许可:署名(BY)

    预览  |  原文链接  |  全文  [ 浏览:9 下载:5  ]     分享

    来源:Advances in Astronomy , 2015

    作者:Shudao Zhou, Bihua Zhou, Jun Wang

    使用许可:署名(BY)

    预览  |  原文链接  |  全文  [ 浏览:9 下载:7  ]     分享

    A novel nonlinear TEC forecasting model is proposed in the paper; the main produces of the model are as follows: first the EOF decomposition of TEC data is made, then the genetic algorithm is used to establish the nonlinear time field model, and finally the decomposed space field and the predicted time field are reconstructed to achieve the purpose of forecasting the TEC data. Experiments indicate that the performance of the novel forecasting model is effective and superior to the direct forecasting and linear forecasting models.

      来源:Advances in Materials Science and Engineering , 2015

      作者:Jun Wang, Haohao Ma, Xiaolin Weng

      使用许可:署名(BY)

      预览  |  原文链接  |  全文  [ 浏览:12 下载:6  ]     分享

      This paper presents a model test, used on the tunnels on Xi’an Metro Line 2, as the prototype for evaluating the reinforcing effect of the anchor rod in tunnel construction in loess areas. An independently designed fiber Bragg grating (FBG) sensor was used to monitor the seven strain conditions of the rock bolts during the construction. The result shows that the axial stress of the rock bolt changes after the excavation and increases steadily with the growing pressure in the wall rock. Results additionally show that the anchor rods at the tunnel vault are subjected to a compressive stress that remains relatively constant after the primary and the secondary lining, while those at the spandrel and the corner of the tunnel are subjected to increased tensile stress. This paper demonstrates the feasibility and the superiority of FBG technology for tunnel model tests.

        来源:Advances in Astronomy , 2015

        作者:Shudao Zhou, Bihua Zhou, Jun Wang

        使用许可:署名(BY)

        预览  |  原文链接  |  全文  [ 浏览:11 下载:7  ]     分享

        A novel nonlinear TEC forecasting model is proposed in the paper; the main produces of the model are as follows: first the EOF decomposition of TEC data is made, then the genetic algorithm is used to establish the nonlinear time field model, and finally the decomposed space field and the predicted time field are reconstructed to achieve the purpose of forecasting the TEC data. Experiments indicate that the performance of the novel forecasting model is effective and superior to the direct forecasting and linear forecasting models.