Ultra-light Hanging Basket Main Truss

Abstract

The invention provides an ultra-light hanging basket main truss, and belongs to the field of bridge construction load-bearing structures. The ultra-light hanging basket main truss comprises a main crossbeam, auxiliary crossbeams, longitudinal beams, a steel sling system, a pre-buried structure and an anchoring lead screw. The pre-buried structure is pre-buried in the previous section of poured boxarc section. The anchoring lead screw is arranged in the poured box arc section in a penetrating mode and arranged at the front end of the pre-buried structure. The main crossbeam is arranged at thebottom end of the anchoring lead screw. One ends of the longitudinal beams are arranged on the main crossbeam and are unparallel to the main crossbeam, and the other ends of the longitudinal beams arearranged at the bottom end of a truss steel sling. The auxiliary crossbeams stretch across the longitudinal beams. One end of the steel sling system is connected with the longitudinal beams, and theother end of the steel sling system is connected with the pre-buried structure. By arranging the rhombic truss, front end displacement of a rear-support hanging basket is effectively reduced, and theproblems of mounting and demounting of a lateral formwork are also solved well; the hanging basket main truss is arranged downwards to enable the gravity center of the hanging basket to be lowest, thus the stability of travelling and a suspended pouring state is ensured, and meanwhile, the maximum working space is provided for a section to be subjected to suspended pouring; and the downwards-arranged hanging basket main truss is anchored on the poured section through the lead screw, and thus self-balance of the hanging basket in the suspended pouring state is ensured.

Description

technical field [0001] The invention relates to the field of bridge construction load-bearing structures, in particular to the main truss of an ultra-light hanging basket. Background technique [0002] As an important equipment in the cantilever pouring construction method, the hanging basket plays the role of bearing the wet weight of the segment and providing a working platform during the concrete pouring process of the arch ring. Because the hanging basket is installed on the curved arch ring, its structure is quite different from the hanging basket structure used in continuous girder bridges, continuous rigid frame bridges and cable-stayed bridges. Whether the design of the hanging basket is reasonable will be directly related to the difficulty of construction, the quality of bridge construction and the progress of construction. For the assembly situation of the lower hanging basket affected by the water level or the cliff, it is impossible to use the existing hanging b...

AI Technical Summary

Problems solved by technology

[0004] The displacement of the front end of the existing hanging basket is relatively large, which increases the difficulty of cantilever construction control; the center of gravity of the existing hanging basket is relatively high, and there are problems of poor running and working stability of the hanging basket; the rear anchor part of the hanging basket currently on the market needs a corresponding mechanism To ensure the reliability of anchoring, the structure is more complicated and the safety risk is greater; the height of the main truss of the existing hanging basket is too large, generally exceeding 3m, but the height of the main truss of the hanging basket under the bridge is affected by the water level or ground elevation When it is less than 1m, or even tens of centimeters, and you don’t want to add extra engineering, the existing hanging basket is powerless

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