| 飞机荷载对下穿TBM隧道管片结构与地层附加应力影响研究 |
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| 引用本文： | 陈安惠,张忠刚,马兴叶,覃亮,邓昆.飞机荷载对下穿TBM隧道管片结构与地层附加应力影响研究[J].铁道标准设计通讯,2019(8):108-113. |
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| 作者姓名： | 陈安惠 张忠刚 马兴叶 覃亮 邓昆 |
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| 作者单位： | 中铁开发投资有限公司;中铁隧道集团二处有限公司;西南交通大学土木工程学院;西南交通大学交通隧道工程教育部重点实验室;中铁三局集团第二工程有限公司 |
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| 摘 要： | 随着地铁隧道下穿机场跑道案例的增多,研究飞机荷载对TBM隧道掘进影响具有重大的意义。依托重庆轨道交通10号线T3航站楼-T2航站楼区间,运用FLAC3D软件研究分析飞机在不同位置下对TBM隧道管片位移与内力的影响,飞机荷载作用下围岩附加应力的变化情况。结果表明:飞机荷载虽然对管片内力与结构都有一定的影响,但其影响较小,管片安全;附加应力在同一深度下中间位置最大向周围逐渐减小,附加应力纵向上呈中间大两边小的趋势。
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| 关 键 词： | 地铁隧道 复合式TBM 飞机荷载 盾构管片 数值计算 附加应力 |
Study on the Influence of Aircraft Load on the Segmental Structure and Stratigraphic Additional Stress of TBM Tunnel |
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| Institution: | ,China Railway Development Investment Co., Ltd.,Erchu Co.Ltd of China Railway Tunnel Group,School of Civil Engineering, Southwest Jiaotong University,Key Laboratory of Transportation Tunnel Engineering, Ministry of Education,China Railway No.3 Engineering Group Fifth Engineering Co.,Ltd. |
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| Abstract: | With the increase of the subway tunnel passing through the airport runway, it is significant to study the influence of aircraft load on TBM tunneling. This paper is based on the T3 terminal to T2 terminal section of Chongqing rail transit line ten, using FLAC3D software, analyzed the influence of the displacement and internal force of segment TBM tunnel in different plane position, the change of the additional stress in the surrounding rock under the load of the airplane. The results show that although the aircraft loads have certain influence on the internal force and structure, but its influence is small, the segment is safety; At the same depth, the additional stress is the largest in the center position, decrease gradually around.in the longitudinal direction. The additional stress is large in the middle and small on both sides. |
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| Keywords: | subway tunnel compound TBM aircraft load numerical simulation additional stress |
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