摘要
中科院500m口径球面射电望远镜(简称FAST)是利用贵州喀斯特地区的洼坑作为望远镜台址,建造500m左右球冠状主动反射面望远镜,FAST在洼地中的位置由球面曲率半径、主动反射面口径、球冠张角球底高程等台址参数决定,FAST设计方案的最优化要求以及大窝凼洼地的几何条件复杂性,导致台址开挖中心的选择直接影响挖方工程量及支护工程的造价。为减少支护工程、减少总开挖量,通过Civil3D软件建立FAST台址的BIM模型,对多个不同开挖中心处的开挖工作量进行计算,将计算结果通过函数拟合的方式优选出最佳开挖中心点,并最优化定位了50根支撑柱的平面位置和6个馈源塔塔基的空间坐标。
Five hundred meters aperture spherical telescope （FAST） had been built in Guizhou Karst depression which as the telescope sites, the location of FAST in depression was decided by spherical curvature radius, diameter of active reflective surface, spherical cap opening angle, ball bottom elevation and so on. Excavation quantities and support engineering cost had been influenced by the selection of excavation center, because of FAST design scheme optimization requirements and Dawodang depression geometry complexity. The BIM of FAST site had been built though Civil3D, lots of different excavation center excavation quantities had been calculated for reducing supporting engineering and total excavated volume, then the best center of excavation had been identified though the function fitting of excavation work calculation. The 50 columns of plan position and 6 feed tower foundation spatial coordinates had been optimized finally.
出处
《施工技术》
CAS
北大核心
2017年第24期71-75,共5页
Construction Technology
基金
贵州省科技计划项目(黔科合SY字(2014)3086)
贵州省科技计划项目(黔科合机字[2011]4002号)
关键词
FAST
建筑信息模型
岩溶洼地
开挖
优化
five hundred meters aperture spherical telescope （FAST）
building information modeling（BIM）
Karst depression
excavation
optimization
