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地震荷载作用下大跨城市地下综合管廊抗震性能分析

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
文中利用有限元软件建立地震荷载作用下综合管廊抗震分析数值模型,分析舱室数量、土体性质、覆土厚度等对大跨城市地下综合管廊抗震力学响应的影响.结果表明,覆土厚度从3、5 mm增至7 mm,顶板峰值应力降幅分别为 9.5%、12.7%,底板峰值应力降幅分别为5.4%、10.7%,左侧墙峰值应力降幅分别为25%、31.2%,右侧墙峰值应力降幅分别为 9.1%、18.2%.土体从粉土到粉质黏土再到沙土,顶板峰值应力增幅分别为44.2%、90.7%,底板峰值应力增幅分别为51.4%、131.4%,左侧墙峰值应力增幅分别为14.3%、185.7%,右侧墙峰值应力增幅分别为100%、340%.
Analysis of Seismic Performance of Large SpanCity Underground Integrated Pipeline Corridor under Seismic Load
In this paper,a numerical model for seismic analysis of integrated pipeline corridors under seismic loads is established by using finite element software.The effects of the number of cabins,soil properties,and soil cover thickness on the seismic mechanical response of large-span urban underground integrated pipeline corridors are analyzed.The results show that when the thickness of soil cover increases from 3mm and 5mm to 7mm,the peak stress of roof decreases by 9.5%and 12.7%,respectively.The reduction of peak stress of bottom plate was 5.4%and 10.7%,respectively.The peak stress reduction of the left wall was 25%and 31.2%,respectively.The peak stress reduction of the right wall was 9.1%and 18.2%,respectively.From silty soil to silty clay to sandy soil,the increase of peak stress of roof is 44.2%and 90.7%,respectively.The increase of peak stress of bottom plate is 51.4%and 131.4%respectively.The increase of peak stress on the left wall was 14.3%and 185.7%,respectively.The peak stress of the right wall increased by 100%and 340%,respectively.

Urban underground integrated pipe corridorEarthquake loadSeismic performanceThickness of soil coverSoil property

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龙里县城乡建设发展服务中心,贵州 黔南 551200

城市地下综合管廊 地震荷载 抗震性能 覆土厚度 土体性质

2024

江西建材
江西省建材科研设计院

江西建材

影响因子：2.247
ISSN：1006-2890
年,卷(期)：2024.(3)
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