| 变形缝对T型交叉管廊地震响应的影响 |
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| 引用本文： | 王长祥,闫启超,梁建文.变形缝对T型交叉管廊地震响应的影响[J].世界地震工程,2022,38(1):037-45. |
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| 作者姓名： | 王长祥 闫启超 梁建文 |
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| 作者单位： | 1 中国市政工程华北设计研究总院有限公司, 天津300074;2 天津大学 建筑工程学院, 天津 300350 |
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| 基金项目： | 国家重点研发项目(2017YFC0805000)。 |
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| 摘 要： | 整体现浇式地下综合管廊通常设置变形缝，以使管廊结构有效增强抵抗土体不均匀沉降的能力。本文以某拟建的整体现浇式T型交叉管廊为例，采用时程分析法计算了其在地震作用下的动力响应，研究了在地震作用下变形缝对管廊内力的影响，以及变形缝的相对变位。研究表明:在地震作用下，变形缝可以显著降低T型交叉管廊节点内力，但变形缝相对变位也会随之增大，最大张开量、压缩量和错位量分别可达5 mm、6 mm和3.2 mm。研究对整体现浇式T型交叉管廊的抗震设计具有一定的参考价值。
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| 关 键 词： | T型交叉管廊 整体现浇式 变形缝 抗震分析 时程分析法 地震内力 |
Influence of deformation joints on seismic response of T-type utility tunnels |
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| WANG Changxiang,YAN Qichao,LIANG Jianwen.Influence of deformation joints on seismic response of T-type utility tunnels[J].World Information On Earthquake Engineering,2022,38(1):037-45. |
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| Authors: | WANG Changxiang YAN Qichao LIANG Jianwen |
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| Institution: | 1 North China Municipal Engineering Design & Research Institute Co., Ltd., Tianjin 300074, China;2 School of Civil Engineering, Tianjin University, Tianjin 300350, China |
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| Abstract: | The integral cast-in-place underground utility tunnels are usually equipped with deformation joints to enhance effectively their resistance to the uneven settlement of the soils. This paper made seismic analysis of T-type utility tunnels with deformation joints by the time-history analysis method，and studied the influence of the deformation joints on the seismic internal forces and the deformations at the deformation joints of the T-type utility tunnels. The results show that the deformation joints can effectively reduce the seismic internal forces at the junction sections of T-type utility tunnels，but the deformations at the deformation joints increase，and the maximum opening， compression and drift of the deformation joints may be up to 5 mm，6 mm and 3.2 mm，respectively. The results may be a reference for the design of the deformation joints of T-type utility tunnels. |
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| Keywords: | T-type utility tunnels integral cast-in-place deformation joints seismic analysis time-history analysis method seismic internal forces |
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