Tunnels are often constructed in complex geological environments,and those located in fault zones are subject to higher construction and operational risks,making it crucial to enhance their fault resistance.To this end,the combined use of steel-polypropylene fiber reinforced concrete and integrated seismic joints is employed to improve the flexural and fault resistance performance of tunnel structures.Numerical simulation analysis of this composite structure was conducted using ABAQUS software.The results indicate that the combination of seismic joints and steel-polypropylene fiber reinforced concrete linings significantly enhances the fault resistance of the structure.By only adjusting the fiber content and the aspect ratio of steel fibers in the composite,the maximum reduction in longitudinal tensile and compressive strain reached 36.1%and 6.3%,respectively,while the maximum reduction in tensile and compressive damage was 1.7%and 13.9%,respectively.It was found that by adjusting the parameters of the composite,tunnels can be made to adapt to different working conditions,offering a more flexible design solution for engineering applications.
关键词
隧道/钢-聚丙烯纤维/组合抗震缝/减震/抗错断
Key words
tunnel/steel-polypropylene fiber/combined seismic joints/seismic mitigation/resistant to faulting
维普
万方数据