Multi-interface beam tower matching precision control method and device

Abstract

The invention relates to a multi-interface beam tower matching precision control method and device. Two steel main beams are located below a top plate, each steel main beam is provided with two tower beam combination ports, the ports are connected with tower columns in a welded mode; outer flower stands are arranged between the tower columns in a spot welding mode, and a core cylinder is arranged in the center of the tower columns; the four side faces of the core cylinder are in butt joint on the outer flower stands through spot welding of an inner flower stand; shear cylinders are arranged in the inner cavities of the tower columns; the shear cylinders are in spot welding connection with the inner walls of the tower columns through a plurality of cross arms. Components such as the shear cylinders, the core cylinders, the inner flower stand and the outer flower stands are arranged inside and outside the tower columns to form a composite frame-cylinder structure in which the inner frame cylinders and outer frame cylinders of the tower columns are matched with each other; the rigid fixing structures of inner shear walls and outer shear walls resist torsion caused by shear force caused by welding stress on the side walls of the tower columns and a shear force hysteresis effect, and the stability of the shapes of the tower columns is kept in the full penetration welding process; stress relief operation is completed through ultrasonic aging; and the mounting position precision of the tower columns on the steel beams is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of bridge manufacturing, and in particular relates to a method and device for controlling the matching accuracy of multi-interface beam towers. Background technique [0002] Zhuji Intercity HJZQ-1 Standard Jinhai Super Bridge spans the Modaomen Waterway. The main bridge is built on the same level as the road and railway. Steel box girder cable-stayed bridge. The total length is 1371.8m, the railway is arranged in the center of the bridge deck, the left and right sides of the road are arranged on both sides of the railway respectively, the total width of the bridge deck is 49.6m, and the bottom width is 17.6m. "" horizontal slope, the bottom plate is horizontal, and the bridge direction is ±5‰ longitudinal slope. The steel main girder of section 0' is the consolidation section of the tower beam, on which there are 4 tower columns of section T0 that need to be matched and installed. The installation form of...

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Problems solved by technology

[0003] However, in order to ensure sufficient mechanical strength, the butt joint between the tower column and the steel beam needs to be fully welded on all the contact parts of the two, so it is also accompanied by a large welding residual stress. If effective control measures are not applied, it will inevitably Lead to local deformation or cracking of the tower column, reducing the bearing capacity

Although the existing technology has the method of spot welding flower racks between the tower columns as a temporary control measure, due to the hollow box structure of the tower column itself, it will still cause relatively large stress deformation to its own tube wall after welding; and Due to the overall frame structure of the tower column and the flower stand, when the welding deformation generated by the tower column at one end is transmitted to the adjacent tower column through the flower stand, the abnormal distortion of the adjacent tower column will also be caused due to the shear lag effect, which will affect the after-effect. Matching form of sequentially docked towers

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