Proposal on Design of Vertical Pre-Reinforced Bolt Method

竖向预筋锚杆法设计建议

• 批准号: 17560447
• 负责人: NISHIMURA Kazuo
• 金额: $ 2.11万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560447/
• 关键词: Tunnel; Vertical Pre-Reinforced Bolt Method; Subsidence; Model Test; Auxiliary Method; 垂直縫地工法; 低土被りトンネル; 都市NATM; DEM解析

During tunnel excavation in the area of the entrance of mountain tunnel or shallow tunnel, such many problems as subsidence of the ground surface and collapse of the cutting face of the tunnel or the land slide of the slope above the tunnel sometimes occur. The auxiliary method of coping with such problems, called "Vertical Pre-Reinforced Bolt Method," is adapted to keep the natural surroundings. However, the design of vertical pre-reinforced method based on the experience in respect of the equivalence force between ground movement and rock bolt. It is not a method for sufficiently evaluating the stiffening effect to protect a ground settlement and a land slide. In addition, there is still few data clarifying the effectiveness of this method from field measurements.This study was planned to verify the effectiveness of penetration depth of reinforce members below the bottom section level of the tunnel using model tests with the aim of reducing the width of site area and construction cost. The proposal of the suggested method on the design and construction of vertical pre-reinforced bolt method was pursued.As the result, the vertical pre-reinforced bolt behaved an axis reinforcement model to assist the ground arch of the ground by tunnel excavation. The load of tunnel excavation is effectively distributed in the front and side of the tunnel face by its reinforcement. This research is completed.

在山隧道或浅隧道入口区域的隧道开挖期间，诸如地面的沉降以及隧道的切割面的倒塌或有时会发生隧道上方坡度的陆地滑梯。应对此类问题的辅助方法称为“垂直增强螺栓方法”，适合保持自然环境。然而，基于地面运动和岩石螺栓之间的等效力的经验，垂直增强方法的设计。它不是一种充分评估较硬效果以保护地面沉降和陆地滑梯的方法。此外，仍然很少有数据阐明该方法从现场测量中的有效性。该研究计划使用模型测试来验证隧道底部以下的渗透深度的有效性，目的是降低现场面积和施工成本的宽度。提出了有关垂直增强螺栓方法设计和构建的建议方法的提议。结果，垂直的预增强螺栓表现为轴加固模型，以通过隧道挖掘来协助地面拱门。隧道开挖的负载通过钢筋有效地分布在隧道面的前侧和侧面。这项研究完成了。

项目成果

垂直縫地ボルトの補強効果

竖缝螺栓的加固效果

• 发表时间: 2005
• 期刊: 土木学会第60回年次学術講演会講演概要集 Vol.60-III(CD-ROM)
• 作者: 高橋 能久;西村 和夫;土門 剛
• 通讯作者: 土門 剛

Study on prediction method of ground movement during tunnel excavation

隧道开挖过程地震动预测方法研究

• 发表时间: 2006
• 期刊: The Proc. of the 60^<th>th JSCE Annual Meeting III-066(CD-ROM)
• 作者: 軽部大蔵;宇野尚雄;宇野 尚雄;亀井健史;亀井健史;亀井健史;亀井健史;Takeshi Kamei;亀井健史;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;亀井健史;亀井健史;Takeshi Kamei;亀井健史;亀井健史;亀井健史;亀井健史;亀井健史;亀井健史;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;亀井健史;亀井健史;藤原多聞;FUJIWARA Tamon
• 通讯作者: FUJIWARA Tamon

トンネル掘削に伴う地山挙動の予測手法に関する研究

隧道开挖岩石行为预测方法研究

• 发表时间: 2006
• 期刊: 土木学会第61回年次学術講演会講演概要集 Vol.61-3(CD-ROM)
• 作者: 軽部大蔵;宇野尚雄;宇野 尚雄;亀井健史;亀井健史;亀井健史;亀井健史;Takeshi Kamei;亀井健史;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;亀井健史;亀井健史;Takeshi Kamei;亀井健史;亀井健史;亀井健史;亀井健史;亀井健史;亀井健史;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;TAKESHI KAMEI;亀井健史;亀井健史;藤原多聞
• 通讯作者: 藤原多聞