摘要
基于某在建隧道工程,首先采用Midas有限元软件建立了隧道和既有桥桩的三维数值模型;其次通过对计算值和实测值进行对比,验证了数值模型参数选取的合理性;最后从隧道埋深H、隧-桩间距S以及竖向荷载N3个因素深入讨论了隧道施工对既有桥桩的影响。研究结果表明:隧道埋深H、隧-桩间距S导致隧道施工对既有桥桩有很大的影响,竖向荷载N导致隧道施工对既有桥桩的影响不大;并且邻近在建隧道的桩能够起到很好的隔离作用,减小隧道施工对远离隧道的桩的影响。
Based on a tunnel project under construction,the three-dimensional numerical model of the tunnel and the existing bridge piles is established by using the finite element software Midas.The rationality of the numerical model parameters is verified by comparing the calculated values with the measured values.Finally,the influence of tunnel construction on the existing bridge piles is discussed from three factors:the buried depth of tunnel(H),the space between tunnel and piles(S)and the vertical load(N).The results show that the tunnel construction has a great impact on the existing bridge piles due to the tunnel buried depth(H)and the tunnel-pile spacing(S),while the vertical load(N)has little impact on the existing bridge piles due to the tunnel construction,and the piles adjacent to the tunnels under construction can play a good isolation role and reduce the impact of tunnel construction on the piles far away from the tunnels.
作者
邢利
XING Li(Shanghai Construction Engineering Investigation and Design Administration Center,Shanghai 200032,China)
出处
《建筑施工》
2024年第5期661-664,共4页
Building Construction
关键词
数值分析
在建隧道
既有桥桩
影响因素
numerical analysis
tunnel under construction
existing bridge piles
influencing factor
