Abstract Through analysis and comparison of the finite element modeling methods for GINA waterstop in im? mersed tube tunnels, it establishes 2D and 3D finite element models for the waterstop, analyzes vertical compression displacement and contact pressure of the waterstop, maximum principal strain of the rubber and vertical reaction force of loading tools, as well as finally compares the numerical simulation and test results of the waterstop. The results show that there are great differences between 2D and 3D finite element models of GINA waterstop in terms of analysis results. As for the 3D model of the waterstop, the numerical simulation results of the vertical reaction force of the loading tools are basically consistent with the test results, which verifies that the analysis results of the waterstop 3D model are rational; the numerical simulation results of the 3D finite element model are independent of the longitudinal length and circumferential perimeter of the waterstop. And so the scaled model can be used to perform numerical simulation and experimental study of GINA waterstop, with the priority of the segmented GINA waterstop for finite element modeling, as its more time-saving, efficiency and accuracy.
Abstract：
Through analysis and comparison of the finite element modeling methods for GINA waterstop in im? mersed tube tunnels, it establishes 2D and 3D finite element models for the waterstop, analyzes vertical compression displacement and contact pressure of the waterstop, maximum principal strain of the rubber and vertical reaction force of loading tools, as well as finally compares the numerical simulation and test results of the waterstop. The results show that there are great differences between 2D and 3D finite element models of GINA waterstop in terms of analysis results. As for the 3D model of the waterstop, the numerical simulation results of the vertical reaction force of the loading tools are basically consistent with the test results, which verifies that the analysis results of the waterstop 3D model are rational; the numerical simulation results of the 3D finite element model are independent of the longitudinal length and circumferential perimeter of the waterstop. And so the scaled model can be used to perform numerical simulation and experimental study of GINA waterstop, with the priority of the segmented GINA waterstop for finite element modeling, as its more time-saving, efficiency and accuracy.
WANG Weiqiang LUO Yonghuan KONG Lingjun ZHANG Yinxi CHEN Yanbei
.Numerical Simulation and Experimental Study of Mechanical Properties of GINA Waterstop[J] MODERN TUNNELLING TECHNOLOGY, 2021,V58(5): 237-243
2021, Vol. 58 