| 某公路隧道不同纤维混凝土支护结构性能比较 |
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| 引用本文： | 朱赞成,华渊,宋卫东.某公路隧道不同纤维混凝土支护结构性能比较[J].工程地质学报(英文版),2006,14(1):127-130. |
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| 作者姓名： | 朱赞成 华渊 宋卫东 |
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| 作者单位： | 1.江南大学土木系,无锡214063; |
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| 摘 要： | 软弱、破碎围岩的公路隧道支护一直是困扰公路隧道施工的技术难题。结合三里冲软弱围岩公路隧道工程地质条件和隧道开挖设计参数,采用FLAC软件对钢纤维混凝土锚喷和聚丙烯纤维混凝土锚喷2种初期支护结构进行数值模拟研究。从应力、位移和塑性区3个方面分析隧道围岩的稳定性。计算结果表明,聚丙烯纤维混凝土锚喷支护结构能充分发挥围岩自承载能力,提高隧道的稳定性,能有效减少二次衬砌混凝土的厚度。
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| 关 键 词： | 公路隧道 数值模拟 钢纤维混凝土 聚丙烯纤维混凝土 稳定性 |
| 文章编号： | 1004-9665/2006/14（01）-0127-04 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005-04-13 |
COMPARISON OF BEHAVOIRS OF LINING STRUCTURES MADE FROM WET-SPRAYED CONCRETE REINFORCED BY DIFFERENT TYPE FIBERS |
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| ZHU Zancheng,HUA Yuan,SONG Weidong.COMPARISON OF BEHAVOIRS OF LINING STRUCTURES MADE FROM WET-SPRAYED CONCRETE REINFORCED BY DIFFERENT TYPE FIBERS[J].Journal of Engineering Geology,2006,14(1):127-130. |
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| Authors: | ZHU Zancheng HUA Yuan SONG Weidong |
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| Institution: | 1.Department of Civil Engineering,Southern Yangtze University,Wuxi 214063;2.Department of Civil Engineering,Beijing University of Science and Technology,Beijing 100083 |
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| Abstract: | The support for porous and broken wall rock has been a major technical challenge in construction of highway tunnels.By combining geological engineering conditions and parameters of the cross section layout of Sanlichong highway tunnel,the authors simulated two cased using FLAC: support with Steel Fiber Reinforced Concrete(SFRC) and support with Polypropylene Fiber Reinforced Concrete(PFRC).The stability of the highway tunnel was analyzed for the stresses,displacements and plastic zones.The numerical simulation show that the PFRC structure could work well utilizing the utmost self-bearing capacity of the rock mass and effectively reduce thickness of the 2~(nd) support. |
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| Keywords: | Highway tunnel Numerical simulation Steel fiber reinforced concrete Polypropylene fiber reinforced concrete Stability |
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