Method for measuring cable saddle of BIM-based steel-mixed composite structure cable bent tower
A technology of combined structure and measurement method, applied in the direction of measurement device, measurement instrument, surveying and navigation, etc., can solve the problem that conventional technology cannot accurately locate
Active Publication Date: 2018-11-16
CHINA RAILWAY NO 9 GRP 2ND ENG +1
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is: the installation of the conventional cable saddle is positioned on the cable tower, but the cable saddle of the steel-concrete composite structure cable tower, the positioning on the tower is greatly affected by space and other constraints, and the conventional process cannot be accurate Positioning, the present invention proposes a BIM-based steel-concrete composite structure cable tower cable saddle measurement method
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[0027] The present invention proposes a cable-saddle measurement method for a steel-concrete composite structure cable tower based on BIM. The operation flow of the method is as follows: familiarize with the design documents and the use method of the Leica MS60 measuring robot; establish according to the design documents and modeling rules Install the three-dimensional building information BIM model of the bridge tower space with the wire pipe and cable saddle, complete the pre-assembly of the outer wall panels of the steel-concrete composite structure cable tower segment and scan the solid point cloud, model the acquired solid point cloud data, and obtain Point cloud model, fit the 3D building information BIM model of the bridge tower space with the point cloud model, conduct comparative analysis, check whether the 3D building information BIM model of the bridge tower space and the pre-assembled tower meet the accuracy requirements, if they meet the accuracy requirements, The ...
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The invention discloses a method for measuring a cable saddle of a BIM-based steel-mixed composite structure cable bent tower and belongs to the technical field of bridge construction. The method comprises: building a cable bent tower spatial three-dimensional building information BIM model, pre-assembling cable bent tower outer wall panels to a ground bed-jig, carrying out spatial scanning on thecable bent tower assembled to the bed-jig through a measurement robot, turning the cable bent tower spatial three-dimensional building information BIM model to a position where the scanned three-dimensional point cloud model is arranged so that the cable bent tower spatial three-dimensional building information BIM model fits to the three-dimensional point cloud model, positioning the cable saddle through coordinates of measurement robot lofting sub-steel-pipe cable saddle anchoring pad corner points, and precisely positioning a cable bent tower hoist. The cable saddle of the steel-mixed composite structure cable bent tower is greatly limited by the space in the positioning so that the conventional process cannot realize precise positioning. The method comprises a construction scheme design, the implementation of the scheme and the acceptance inspection after construction. Through comparison of measured data and design data, the installation quality and whether the installation meetsthe construction requirements are verified and convenient construction and accurate positioning are realized.
Description
technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a BIM-based cable saddle measurement method for a steel-concrete composite structure cable tower. Background technique [0002] According to the construction characteristics of cable-stayed bridges with steel-concrete composite structure cable towers, the installation and positioning on the towers is difficult, and the construction accuracy is required to be high. [0003] Conventional cable-saddle measurement and positioning technology has some key problems that are difficult to solve. Common problems mainly exist in the following aspects: [0004] 1. The steel-concrete composite structure cable tower and the wire pipe cable saddle itself cannot be accepted for accuracy after processing, which may lead to structural installation mismatch; [0005] 2. Affected by the steel-concrete composite structure cable-stayed bridge cable towers assembled in a long l...
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CPCG01C15/00
Inventor 刘洋杨宗林张向明郭金龙姚富智张成建吴佳刚浦路戴金平吴昊杨博智张英立王玉峰孙鑫
Owner CHINA RAILWAY NO 9 GRP 2ND ENG