| 地铁明挖区间大跨度密排预应力框架箱型隧道技术 |
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| 引用本文： | 安应选.地铁明挖区间大跨度密排预应力框架箱型隧道技术[J].现代城市轨道交通,2012(4):27-29,33. |
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| 作者姓名： | 安应选 |
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| 作者单位： | 中铁二院西安公司地铁轻轨处,助理工程师,陕西西安710054 |
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| 摘 要： | 介绍地铁明挖区间大跨度密排预应力框架箱型隧道技术,该技术涉及土建和预应力专业,施工协调和工序转换相对一般地铁土建施工更为复杂。该施工技术通过在箱型结构内增加环向后张拉预应力密排框架梁,改善箱型隧道结构受力体系,提高箱型隧道结构承载能力,突破现有地铁结构空间限制。
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| 关 键 词： | 地铁 箱型隧道 明挖 大跨度 密排框架 预应力 |
Metro Construction Technology for Tunnel Structure with Long-Span Dense-Row Pre-Stressed Frame Box in Open-Cut Section |
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| An Yingxuan.Metro Construction Technology for Tunnel Structure with Long-Span Dense-Row Pre-Stressed Frame Box in Open-Cut Section[J].Modern Urban Transit,2012(4):27-29,33. |
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| Authors: | An Yingxuan |
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| Institution: | An Yingxuan |
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| Abstract: | It describes the metro construction technology for tunnel structure with long-span dense-row pre-stressed frame box in open-cut section, construction technology concerns civil engineering and pre-stressed concrete engineering, construction coordination and working process conversion is relatively more complex than ordinary metro civil construction projects. By using the construction techniques, a ring back tensile pre-stressed dense-row framework beam is added within the box structure, to improve the stress system of box-type tunnel structure and improve the carrying capacity of box-type tunnel structure, breaking the space constraints of the existing metro structures. |
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| Keywords: | metro box structure tunnel open-cut long-span dense-rowframework pre-stress |
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