【摘要】 桥梁施工平面控制网必要精度,可按桥式、桥长或桥墩中心放样三种方法确定。结合工程实例,对三种方法的优缺点及其适用范围进行对比分析,提出了不同桥型结构和不同建网技术条件下的桥梁施工平面控制网必要精度的估算方法,对相关规范的修订具有重要的参考价值。更多还原

【Abstract】 The accuracy requirement for horizontal control network of bridge construction can be estimated by three methods associated with bridge style, bridge length and bridge pier center setting out. Integrating with engineering instance, this paper compares and analyses the three methods in their merits and demerits, as well as their explicabilities. And then different methods are advanced so as to adapt to different bridge styles and different surveying technologies of control network, which will contribute a great deal to the revision of correlative specifications.更多还原