隧道纤维混凝土衬砌抗错断性能模型试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (13) : 50-56.

论文

崔光耀1，王李斌1，王明年2，王道远3,4

作者信息 +

Model tests for anti-breaking performance of a fiber reinforced concrete tunnel lining

CUI Guangyao1，WANG Libin1，WANG Mingnian2，WANG Daoyuan3,4

Author information +

文章历史 +

摘要

为研究隧道纤维混凝土衬砌的抗错断性能，以某地铁工程九家湾断裂F2-3区间隧道段为研究背景，开展了高烈度活动断裂区隧道纤维混凝土衬砌抗错断性能模型试验研究。研究结果表明：隧道纤维混凝土衬砌主应力抗错断效果达30%～40%，纵向应变抗错断效果达80%～90%，结构安全系数最小值增加倍数达4～5倍；隧道混杂纤维混凝土衬砌抗错断效果优于钢纤维混凝土衬砌，钢-聚丙烯混杂纤维混凝土隧道衬砌抗错断安全性最高，结构安全系数最小值为1.62；在提高隧道抗错断性能方面，纤维混凝土的增韧作用强于增强作用。研究成果对高烈度活动断裂区隧道抗错断性能的提高具有重要的意义。

Abstract

In order to study anti-breaking performance of fiber reinforced concrete tunnel lining, Jiujiawan fault F2-3 interval tunnel segment in a metro project was taken as the study background to conduct model tests for anti-breaking performance of a fiber reinforced concrete tunnel lining in a high-intensity seismically active fault zone. The study results showed that the anti-breaking effect of the principal stress of the fiber reinforced concrete tunnel lining reaches 30%-40%, the anti-breaking effect of its longitudinal strain reaches 80%-90%, the minimum value of the structural safety coefficient is increased by 4-5 times; compared to a steel fiber reinforced concrete lining, the anti-breaking effect of the fiber reinforced concrete one is better, the anti-breaking security of a steel-polypropylene hybrid fiber concrete lining is the highest, the minimum value of the structural safety coefficient is 1.62; toughening action of fiber reinforced concrete is stronger than its strengthening one in improving the anti-breaking performance of a tunnel; these results are significant to improve the anti-breaking performance of a tunnel in high-intensity seismically active fault zone.

导出引用

崔光耀1，王李斌1，王明年2，王道远3,4. 隧道纤维混凝土衬砌抗错断性能模型试验研究[J]. 振动与冲击, 2019, 38(13): 50-56

CUI Guangyao1，WANG Libin1，WANG Mingnian2，WANG Daoyuan3,4. Model tests for anti-breaking performance of a fiber reinforced concrete tunnel lining[J]. Journal of Vibration and Shock, 2019, 38(13): 50-56

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