Spatial stay-cable positioning method of multispan continuous S-shaped landscape bridge

Abstract

The invention relates to a spatial stay-cable positioning method of a multispan continuous S-shaped landscape bridge, which belongs to the building field, and the method is characterized in that a central calibrator is used for positioning a central point of an anchor bearing plate on an anchoring end of a stay cable and a central point of an outlet of the stay cable, i.e. the central line of the anchor bearing plate is overlapped with the central line of the central calibrator, the central position of the anchor bearing plate is determined, and the central calibrator is a circular steel plate with the diameter which is identical to the inner diameter of a stay cable conduit; the a semicircular central calibrator is vertical to a bushing of the stay cable conduit which is previously calibrated and plugged into an outer opening of the bushing by utilizing the calibration of the semicircular central calibrator for the center of the outlet of the stay cable conduit on the outer side of an S-shaped landscape bridge main tower wall, the arc edge and the center of the semicircular central calibrator is are matched with the inner wall of the bushing, and the central position of the outlet of the stay cable conduit on the outer side of the S-shaped landscape bridge main tower wall can be obtained; and the semicircular central calibrator is a semicircular steel plate with the diameter being identical to the inner diameter of the stay cable conduit. The positioning method is high in precision and fast in speed.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a space stay cable positioning method for a multi-span continuous "S"-shaped landscape bridge. Background technique [0002] The cable-stayed bridge is a stable spatial load-bearing structural system formed by the joint stress of the main tower, cable-stayed cables, cable towers and steel box girder vertical and horizontal connections. In this spatial structure system, the cable-stayed cable is the link connecting the steel box girder and the cable tower, which makes the steel box girder a multi-point elastic support, makes the cable-stayed bridge similar to a multi-span continuous beam, and greatly reduces the size of the steel box girder. At the same time, the self-weight and live load of the steel box girder transmit the cable force to the main tower through the stay cables. Due to the symmetrical distribution of the stay cables, the cable tower and the steel box girder...

AI Technical Summary

Problems solved by technology

[0003] In the process of force transmission, the stay cable plays a key role, and the stay cable is directly anchored on the tower and the main beam through the cableway tube, so the accuracy of its anchorage position will directly affect the cable force. The distribution on the cable tower and the main girder; if the accuracy is not enough, the overall stress structure of the bridge may change, or under the action of wind and other external forces, the cableway nozzle will rub against the stay cables, shortening the cable stay. cable life