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Numerical Experiment for Support Effect of Umbrella Arch in Tunnel

Yuwen Wang1Zhao Hu2Yongli Xie2Chao Wang1Kaicheng Hua1Jinxing Lai2Hongpeng Lai2

1. Guangdong Huiqing Expressway Co.,Ltd.2. School of Highway,Chang'an University

摘要:Umbrella arch is often used as pre-support for shallow tunnel and poor surrounding rock.To evaluate the support effect quantitatively,12 cases by numerical analysis were used to study the effect of cover depth and condition of surrounding rock on the support effect of umbrella arch.Load percentage of umbrella arch was proposed to evaluate the effectiveness of umbrella arch.The umbrella arch could not work when the percentage was less than 50%.When the surrounding rock was poor and the shallower the cover depth,the better the support effect.
会议名称:

The 6th International Conference on Environmental Science and Civil Engineering(ESCE 2020)

会议时间:

2020-01-04

会议地点:

中国江西南昌

  • 专辑:

    理工C(机电航空交通水利建筑能源)

  • 专题:

    公路与水路运输

  • DOI:

    10.26914/c.cnkihy.2020.003929

  • 分类号:

    U455.7

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