Evaluation system of remedial works for long-term stability of tunnels due to deterioration of surrounding ground
周边地基劣化隧道长期稳定性修复工程评价体系
基本信息
- 批准号:14550493
- 负责人:
- 金额:$ 2.18万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2003
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In this research, based on elasto-viscoplastic model with strain hardening and strain softening, finite element analyses were conducted to investigate the long-tem stability of tunnel in shuttered zone. The purpose of the research is to investigate the mechanism of the long-tem stability of the tunnel due to the time dependent behavior of surrounding ground. Particular attention has been paid to the redistribution of the stress within the ground due to the strain softening and the time dependent behaviors of soils. From the analysis, a new approach for assessing the long-term stability of tunnel and the effectiveness of the remedial work carried out for the tunnel was proposed. It is found that due to the time dependent behavior of the ground, the earth pressure acting on the tunnel lining changes constantly. It is also found that the existence of a cave may greatly change the distribution of the moment and may lead to the cracking of concrete. The remedial work, that is, the injection of mortar into existed cave, and rock bolts are found to be very effective in reducing the section force of lining. The calculated results are compared and checked with the results obtained from field measurements accumulated in a long period. It is found from the numerical analysis that the evaluating method using the numerical analysis proposed in this research is capable of simulating the mechanism of long-term stability of tunnel and the effectiveness of the remedial works to a reasonable accuracy and can be applied to field project.
本文基于考虑应变硬化和应变软化的弹粘塑性模型,对封闭区隧道的长期稳定性进行了有限元分析。研究的目的是探讨隧道的长期稳定性的机制,由于周围地层的时间依赖性的行为。由于土体的应变软化和时间依赖性,地基中的应力重新分布受到了特别的关注。通过分析,提出了一种新的方法来评估隧道的长期稳定性和修复工作的有效性。结果表明,由于地层的时变性,作用在隧道衬砌上的土压力是不断变化的。研究还发现,孔洞的存在会极大地改变弯矩的分布,并可能导致混凝土开裂。对既有溶洞进行注浆和锚杆加固等补救措施,对减小衬砌截面力有很好的效果。将计算结果与长期积累的实测结果进行了比较和检验。数值分析结果表明,本文提出的数值分析评价方法能够较好地模拟隧道长期稳定性的机理和整治工程的效果,具有一定的工程应用价值。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
F.Zhang, A.Yashima, G.L.Ye, T.Adachi, F.Oka: "An elastoplastic strain-softening constitutive model for soft rock considering the influence of intermediate stress"Soils and Foundations. Vol.43, No.5. 107-117 (2003)
F.Zhang,A.Yashima,G.L.Ye,T.Adachi,F.Oka:“考虑中间应力影响的软岩弹塑性应变软化本构模型”土壤与基础。
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- 影响因子:0
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F.ZHANG, A.Yashima, G.L.Ye, T.Adachi, F.Oka: "Numerical simulation of progressive failure in cut slope using a soil-water coupled analysis based on a strain-soften model"Soils and Foundations. Vol43,No.3. (2003)
F.ZHANG、A.Yashima、G.L.Ye、T.Adachi、F.Oka:“基于应变软化模型的土水耦合分析对路堑边坡渐进破坏的数值模拟”《土壤与地基》。
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- 影响因子:0
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F.Zhang, A.Yashima, S.Matsuda, Y.Sekine, H.Hyodo: "Evaluation of the remedial works for cracked tunnels in creep-behaved ground"Proc.of the 12^<th> Asian Regional Conference of Int.Society for Soil Mechanics and Geotechnical Engineering, Singapore, Leung
F.Zhang、A.Yashima、S.Matsuda、Y.Sekine、H.Hyodo:“蠕变地面裂缝隧道补救工程的评估”第 12 届国际国际会议亚洲区域会议议程。
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- 影响因子:0
- 作者:
- 通讯作者:
F.Zhang, A.Yashima, G.L.Ye, T.Adachi, F.Oka: "An elastoplastic strain-softening constitutive model for soft rock considering the influence of intermediate stress"Soils and Foundations. Vol.43,No.5. 107-117 (2003)
F.Zhang,A.Yashima,G.L.Ye,T.Adachi,F.Oka:“考虑中间应力影响的软岩弹塑性应变软化本构模型”土壤与基础。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
F.Zhang, A.Yashima, S.Matsuda, Y.Sekine, H.Hyodo: "Evaluation of the remedial works for cracked tunnels in creep-behaved ground"Proc.of the 12th Asian Regional Conference of Int.Society for Soil Mechanics and Geotechnical Engineering Singapore, (Leung et
F.Zhang、A.Yashima、S.Matsuda、Y.Sekine、H.Hyodo:“蠕变地面裂缝隧道修复工程的评估”第 12 届国际土壤力学学会亚洲区域会议论文集
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10.3866/pku.whxb20090305 - 发表时间:
2009-03 - 期刊:
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Strain Softening of Siltstones in Consolidation Process
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- DOI:
10.2472/jsms.69.250 - 发表时间:
2020 - 期刊:
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超声液位检测频率选择的理论计算和实验研究
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张峰;LI Bin;HE Xi-Ping;贺西平;ZHANG Feng;李斌 - 通讯作者:
李斌
ZHANG Feng的其他文献
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{{ truncateString('ZHANG Feng', 18)}}的其他基金
Comprehensive research on the formation process of the Bingo regional economy: focusing on technology accumulation and networks
宾果区域经济形成过程综合研究:关注技术积累和网络
- 批准号:
16K03800 - 财政年份:2016
- 资助金额:
$ 2.18万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Fundamental research on dynamic development of regional industrial districts after World War II
战后区域工业区动态发展的基础研究
- 批准号:
25380427 - 财政年份:2013
- 资助金额:
$ 2.18万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Establishment of evaluating method for remedial works against long-term instability of tunnels due to deterioration of surrounding ground
周围地基劣化导致隧道长期失稳修复工程评价方法的建立
- 批准号:
18560484 - 财政年份:2006
- 资助金额:
$ 2.18万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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