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作 者:黄业胜 郭彩霞 郭庆宇 张小颖 李继波 傅睿智 Huang Yesheng;Guo Caixia;Guo Qingyu;Zhang Xiaoying;Li Jibo;Fu Ruizhi(Beijing Electric Power Economic and Technological Research Institute Co.,Ltd.,Beijing 100120,China;Key Laboratory of Urban Security and Disaster Engineering,Beijing University of Technology,Beijing 100124,China;Beijing Municipal Construction Co.,Ltd.,Beijing 100048,China)
机构地区:[1]北京电力经济技术研究院有限公司,北京100120 [2]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124 [3]北京市政建设集团有限责任公司,北京100048
出 处:《市政技术》2023年第8期54-60,252,共8页Journal of Municipal Technology
基 金:国家自然科学基金面上项目(52278385);北京市教育委员会科技计划项目(KM202210005019)。
摘 要:隧道断面设计对电力隧道的安全性、经济性与可靠性等性能有着直接的影响,因此需要设计人员对隧道断面内力进行深入的研究分析,以保障电力隧道各项性能符合要求。为有效缓解人工计算的压力,解决不同施工工法下的电力隧道合理断面形式设计问题,并满足快速施工要求,该研究通过有限元软件对不同施工工法下的电力隧道断面设计进行了大量的参数分析与计算,构建出圆形、矩形与马蹄形隧道断面的内力计算数据库,再利用BP神经网络对数据集进行学习与预测,实现了通过隧道尺寸、地基刚度与荷载水平预测其最大弯矩与轴力的目的。并以MSE值作为模型的评价指标,验证了模型的有效性。最终以此为基础设计出一款新型的电力隧道断面辅助设计软件,以期为电力隧道设计和施工提供有益的参考与指导,并通过北京市的2个实际工程案例验证了该软件的有效性与实用性。Tunnel section design has a direct impact on the safety,economy and reliability of the power tunnel performance.It is necessary for designers to carry out in-depth research and analysis of the internal force to ensure that the performance of the power tunnel meets the requirements.In order to effectively relieve the pressure of manual calculation,solve the problem of reasonable section form design of power tunnel under different construction methods,and meet the requirements of rapid construction,a large number of parameter analysis and calculation on the section design of power tunnel under different construction methods was carried out by finite element software,built the internal force calculation database of circular,rectangular and horseshoe-shaped tunnel sections in this study.The data set was learned and predicted by BP neural network to predict the maximum bending moment and axial force by tunnel size,foundation stiffness and load level.Being the evaluation index,the MSE value verified the validity of the model.Finally,a new type of auxiliary design software for power tunnel section was designed to provide useful reference and guidance for the design and construction of power tunnel,whose effectiveness and practicability were further verified by two practical engineering cases in Beijing.
分 类 号:U452.2[建筑科学—桥梁与隧道工程]
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