摘要
文章详细讨论了斜拉桥花瓶式塔柱变形监测方案的拟订过程。依据塔柱所能承受的允许荷载正演塔柱允许变形 ;以必要观测精度不掩盖变形点位移为准则 (即满足m≤ (1/ 10 ～ 1/ 2 0 )×Δ ,Δ为变形点的允许位移 )确定塔柱变形监测的必要精度 ;对必要观测精度进一步细化 ,按精度匹配原则量化各项影响误差 ,以此为基础拟订观测方案包括仪器选型 ,方案设计等。该方案充分考虑了被监测对象的结构力学特征 ,具有相当的参考价值。
In this paper,the observational plan on tower post of large-scale stayed-bridge is stated in details.According to the pernitted load that the tower post may bears,compute the allowed deformation of the tower post.On the premise of m≤(1/10-1/20)×Δ,whereΔ is the permitted deformation,determining the essential precision of surveying.Based on the decomposition of the necessary precision,designing the plan for observation including instruments'pattern,program drawing etc.The specific properties of constructional mechanics about the observed objects is in full consideration ,so the observational plan is rather referential.
出处
《东北测绘》
2000年第3期24-26,共3页
Northeast Surveying and Mapping
关键词
斜拉桥
塔柱
允许位移
索塔
变形监测
tower post
stayed-bridge
permitted deformation
precision matching
