摘要
研究目的:山区铁路桥梁设计不仅要考虑纵向地貌的影响,而且要考虑横向地貌的影响,在设计过程中需要绘制很多桥墩横断面图,计算不规则几何实体的工程数量,因此有必要研究出一套算法,能够自动绘制设计图纸,准确计算工程数量,以满足大规模铁路设计的需要。研究结论:(1)本文所述能够智能地从航测平面图中读取二维地面信息、从全桥布置图中读取纵向地面线和纵向刷坡线,从而完成设计数据的输入;(2)根据设计者定义的横向刷坡方案,自动完成桥墩横断面的设计;(3)能够将三维工程实体分解成多个横向关键断面,自动完成关键断面设计后,累计出刷坡和边坡防护工程的数量,绘制临时征地范围图;(4)该算法编制的程序已成功应用于长昆客专,在人员少、工期短的不利情况下,能够保证设计任务的顺利完成。
Research purposes :The design of railway bridge in Mountain area should not only consider the influence of longitudinal ground,but also consider the influence of the transverse ground.In the process of design we need draw a lot of cross -sectional drawings of pier,calculate the number of projects of irregular geometry.So we must work out an algorithm which can automatically draw the design drawing and calculate the number of projects accurately,in order to meet the needs of large -scale railway design. Research conclusions:(1 )The input of the design data can be obtained by intelligently reading two -dimensional ground information from the aerial survey plan,reading the longitudinal ground line and the longitudinal slope cutting line from the whole bridge layout.(2)The design of cross -section of pier is completed automatically according to the plan of transverse slope cutting by the designer.(3)The three -dimensional engineering entity can be decomposed into several cross -sectional key sections.After the key section design is completed automatically,the number of the slope cutting and the slope protection project is accumulated,and a map of temporary land requisition is drawn.(4)The application of this algorithm was successfully applied to Changsha -Kunming Railway Passenger Dedicated Line,which can guarantee the smooth completion of the design task in the case of low personnel and short working period.
作者
廖立坚
LIAO Li-jian(China Railway Design Corporation,Tianjin 300142,China)
出处
《铁道工程学报》
EI
北大核心
2018年第12期20-25,共6页
Journal of Railway Engineering Society
基金
中国铁路设计集团有限公司内部项目(921003)
关键词
桥梁设计
山区铁路
桥墩横断面
土石方数量
bridge design
mountain railway
cross -section of pier
quantity of earth work
