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浏览/检索结果: 共5条，第1-5条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Preliminary study on determination of reasonable ratio of spacing to diameter of double tunnels under earthquake 会议论文 Zhuhai, PEOPLES R CHINA, MAR 11-12, 2017 作者:  Zhou Yongqiang;  Sheng Qian;  Leng Xianlun;  Fu Xiaodong;  Li Nana 收藏  |  浏览/下载：19/0  |  提交时间：2018/06/05 earthquake  reasonable ratio of spacing to diameter  double tunnels  relative displacement  plastic zone   Analysis on ground surface deformation induced by the subway double tunnels construction 会议论文 作者:  Wu, Yan-Kai;  Gu, Ming-Fen 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/31 Research of Surface Deformation with Metro Double Tunnels Construction and the relative Position Change 会议论文 8th International Conference on Fracture and Strength of Solids (FEOFS) 2010, JUN 07-09, 2010 作者:  Wu Yankai;  Feng Wei 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/31 Metro tunnel  FEM  Numerical simulation  Surface settlement   Study on integrated vehicle navigation system of "Beidou" double-star/DR (EI CONFERENCE) 会议论文 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China Liu H.; Liu J.; Zhai L.; Xiu J. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25 Vehicle navigation is the corn element of Intelligent Transport System. The integrated system of "Beidou" Double-star/DR is studied in this paper according to the present state of vehicle navigation in our country. "Beidou" Double-star navigation position system is one regional satellite position system built up by our country  which can provide rapidly not only highly precision position and brevity telegram service. However  when the vehicles go around the tall buildings  high mountain area  wayside trees and in the tunnels  all signal may not be received. If the satellite navigation position system is used only  the precision will be reduced. Therefore  this paper proposes a nonlinear self-adaptive Kalman filter model and its algorithm for a Double-star/DR integrated navigation system in land vehicles  and verifies effectively the algorithm and scheme through the means of simulation. Next  this paper introduces map match approach. The roads are segmented and character information is brought out. Then  proper search rules and map match algorithm are adopted. According to the current vehicle position information that Double-Star/DR system provides  the nearest road can be found in the map database. The vehicle position will be matched and displayed on the road. The result of the experiment shows that the Double-star/DR integrated algorithm and map match can improve reliability and the precision of vehicle navigation system efficiently.   Analysis of Ground Displacement Induced by Double-tube Parallel Shield Tunnels 会议论文 Hong Kong, PEOPLES R CHINA, DEC 22-23, 2016 作者:  Rong, Weiquan[1];  Yuan, Hong[1];  Yang, Xiongfei[1];  Wu, Jiayu[1] 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/17