公路隧道衬砌厚度不足对衬砌安全性影响

王华牢; 李宁; 褚方平

doi:10.19818/j.cnki.1671-1637.2009.02.007

公路隧道衬砌厚度不足对衬砌安全性影响

doi: 10.19818/j.cnki.1671-1637.2009.02.007

王华牢^{1, 2,},
李宁¹,
褚方平³

1.
西安理工大学水利水电学院陕西西安 710048
2.
中交第一公路勘察设计研究院有限公司, 陕西西安 710075
3.
同济大学土木工程学院, 上海 200092

基金项目:

国家西部交通建设科技项目 200331849018

详细信息

作者简介:
王华牢(1961-), 男, 陕西蒲城人, 中交第一公路勘察设计研究院有限公司教授级高级工程师, 工学博士, 从事隧道设计研究

中图分类号: U451.4
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- 被引次数: 0
出版历程
- 收稿日期: 2008-10-12
- 刊出日期: 2009-04-25

Effect of lining thickness lack on lining safety for highway tunnel

1.
School of Water Resources and Hydroelectric Power, Xi'an University of Technology, Xi'an 710048, Shaanxi, China
2.
CCCC First Highway Consultants Co., Ltd., Xi'an 710075, Shaanxi, China
3.
School of Civil Engineering, Tongji University, Shanghai 200092, China

More Information

Author Bio:
WANG Hua-lao(1961-), male, senior engineer, PhD, +86-29-88322888, .cnwanghl@ccroad.com

摘要

摘要: 针对Ⅲ级和Ⅳ级围岩两种不同的支护形式, 建立衬砌厚度不足计算模型。在有无病害条件下, 比较隧道衬砌各位置的内力和安全系数, 并根据衬砌厚度不足病害程度和宽度, 采用数值计算的方法, 分析公路隧道衬砌厚度不足对衬砌安全性的影响。分析结果表明: 隧道衬砌边墙、拱腰和拱顶的弯矩、剪力和轴力都比较大, 属于病害发生的敏感部位; 隧道衬砌出现厚度不足病害时, 安全系数显著减小; 衬砌安全系数随着病害程度的加剧, 左边墙呈线性减小, 而拱腰和拱顶呈曲线形减小; 衬砌安全系数随着病害宽度的增加, 先是显著减小, 最后又有小幅增长, 但整体呈减小趋势; 随着病害区域从边墙向拱顶转移, 衬砌受影响的范围逐渐增大。
- 公路隧道 /
- 衬砌 /
- 厚度不足 /
- 安全性 /
- 数值分析
Abstract: The calculation models of lining thickness lack were set up for surrounding rock Ⅲ and rock Ⅳ. The internal forces and safety factors of tunnel lining at various locations were compared under the conditions of tunnel linings with disease and without disease. Using numerical methods, the effect of lining thickness lack caused by disease extent and range on lining safety were analyzed. Analysis result shows that the values of the bending moments, shears and axial forces at the wall, haunch and vault of lining are large, so these sections are belonging to the sensitive parts to disease. When thickness lack disease appears, the safety factor of tunnel lining significantly reduces. With the increase of disease degree, the safety factor of left wall linearly decreases, but the safety factors of haunch and vault curvily reduce. With the increase of disease width, the safety factor firstly decreases obviously and then increases in small range, but the overall trend is decrescent. With the transfer of disease region from wall to vault, the influenced region of lining increases gradually.
- highway tunnel /
- lining /
- thickness lack /
- safety /
- numerical analysis

HTML全文

图 1 厚度不足病害

Figure 1. Disease of thickness lack

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图 2 Ⅲ级围岩隧道衬砌计算模型

Figure 2. Calculation model of tunnel lining under rock Ⅲ

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图 3 Ⅳ级围岩隧道衬砌计算模型

Figure 3. Calculation model of tunnel lining under rock Ⅳ

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图 4 Ⅲ级围岩衬砌轴力

Figure 4. Axial force of tunnel lining under rock Ⅲ

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图 5 Ⅲ级围岩衬砌弯矩

Figure 5. Moment of tunnel lining under rock Ⅲ

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图 6 Ⅲ级围岩衬砌剪力

Figure 6. Shear force of tunnel lining under rock Ⅲ

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图 7 Ⅳ级围岩衬砌轴力

Figure 7. Axial force of tunnel lining under rock Ⅳ

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图 8 Ⅳ级围岩衬砌弯矩

Figure 8. Moment of tunnel lining under rock Ⅳ

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图 9 Ⅳ级围岩衬砌剪力

Figure 9. Shear force of tunnel lining under rock Ⅳ

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图 10 受左边墙厚度不足影响的衬砌安全系数

Figure 10. Safety factors of lining influenced by thickness lack of left wall

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图 11 受左拱腰厚度不足影响的衬砌安全系数

Figure 11. Safety factors of lining influenced by thickness lack of left haunch

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图 12 受拱顶厚度不足影响的衬砌安全系数

Figure 12. Safety factors of lining influenced by thickness lack of vault

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图 13 受病害厚度影响的不同部位衬砌安全系数

Figure 13. Safety factors of lining influenced by disease thicknesses at different positions

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图 14 受左边墙病害宽度影响的衬砌安全系数

Figure 14. Safety factors of lining influenced by disease width of left wall

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图 15 受左拱腰病害宽度影响的衬砌安全系数

Figure 15. Safety factors of lining influenced by disease width of left haunch

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图 16 受拱顶病害宽度影响的衬砌安全系数

Figure 16. Safety factors of lining influenced by disease width of vault

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图 17 受病害宽度影响的不同部位衬砌安全系数

Figure 17. Safety factors of lining influenced by disease widthes at different positions

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