摘要
为有效提升斜拉桥的成桥质量和工程进度,需着重加强斜拉索预埋导管的精密定位。通过分析预埋导管的相对基准极坐标法和差分三角高程法定位方法,同时结合实践经验,提出斜拉索预埋导管精密定位的具体实施步骤及定位过程中的注意事项,并给出定位过程中减小误差的具体措施。实践表明,该定位步骤及措施能够保证索导管轴线与设计斜拉索轴线的相对定位精度及锚固点位置的三维精度,确保定位要求,为类似斜拉桥索导管精密定位提供借鉴。
To effectively improve the quality of a cable-stayed bridge and the construction progresses, the embedded cable duct needs to be positioned precisely. Through the analysis of the relative polar coordinate datum method and the triangular elevation method, combined with practical experience, we put forward a precise positioning method for the embedded cable duct with concrete implementation steps and notation matters. Real examples show that the method can ensure the accuracy of the cable conduit axis relative positioning and the 3D positioning, which can be referred by the precise positioning of similar cable-stayed bridge.
出处
《工程勘察》
2017年第1期69-73,共5页
Geotechnical Investigation & Surveying
关键词
斜拉桥
预埋导管
定位
实施步骤
cable-stayed bridge
embedded cable duct
positioning
implementation step
