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分析了水中桥墩施工允许误差,推导了桥梁施工高程控制网的必要精度,研究并设计了不同跨河长度下的桥梁高程控制测量等级和跨河水准测量的测回数及组数,研究成果可供相关规范修订时借鉴。
This paper analyzes the allowable errors of pier construction in water, deduces the necessary accuracy of bridge construction elevation control network, and studies and designs the bridge measurement level and cross-river leveling survey measurement and group number under different river length. The research results are available Related norms revised reference.