桥隧搭接工程多源损伤及车辆冲击模型试验研究

PDF(796 KB)

振动与冲击 ›› 2013, Vol. 32 ›› Issue (2) : 115-123.

论文

桥隧搭接工程多源损伤及车辆冲击模型试验研究

孙广臣1，2，傅鹤林1，巢万里1,3

作者信息 +

Study on Model Tests on Multiple-Source Damages and Vehicle Impacts of Bridge and Tunnel Lap Joint Project

SUN Guang-chen1,2, FU He-lin1, CHAO Wan-li1,3

Author information +

文章历史 +

摘要

分析了Ⅳ、Ⅴ级围岩条件下的桥隧搭接工程的特点及多源损伤机理，并在此基础上成功研制了相关模型试验装置和测试方法。通过模型试验及对试验结果的分析和研究，得出以下结论：运营中搭接处的汽车荷载及其冲击作用，会对桥梁、隧道各关键部位及洞周围岩等产生明显不利影响，长期状况下易使桥梁、隧道的各关键部位产生损伤，因而影响桥梁结构、隧道衬砌、桩基础的耐久以及洞口围岩的稳定。因此，应采取措施减小汽车荷载及其冲击的影响，如对桥、隧及围岩关键部位采取局部加强措施，或采用桩基础，减小桥梁跨径，加大搭接长度等。

Abstract

Analysis on characteristics and multiple-source damage mechanism of bridge and tunnel lap joint projects under grade Ⅳ or Ⅴ surrounding rocks have been made, on the basis of which related model test equipments and test methods have been successfully developed. The study of model test and its results indicated that: Vehicle loads and impact actions during post operation stage have obvious harmful effect on bridge, tunnel and surrounding rocks nearby the entrance, which may cause damages to key parts of bridge or tunnel in the long run, and therefore do harm to the durability of bridge, tunnel lining, pile foundation or the stability of surrounding rocks. Consequently, some measures should be taken for the purpose of reducing the influence caused by vehicle loads and impact, such as strengthening key parts of bridge, tunnel lining and surrounding rocks nearby the entrance, or using pile foundation, decreasing bridge span, lengthening the lap joint period and so on.

导出引用

孙广臣;傅鹤林;巢万里;. 桥隧搭接工程多源损伤及车辆冲击模型试验研究[J]. 振动与冲击, 2013, 32(2): 115-123

SUN Guang-chen;FU He-lin;CHAO Wan-li;. Study on Model Tests on Multiple-Source Damages and Vehicle Impacts of Bridge and Tunnel Lap Joint Project[J]. Journal of Vibration and Shock, 2013, 32(2): 115-123