Concrete-filled steel tube bridge tower and construction method thereof

Abstract

The invention relates to the technical field of suspension bridges, in particular to a concrete-filled steel tube bridge tower and a construction method thereof. The tower structurally comprises a plurality of first steel tubes used for restraining concrete and a plurality of consolidation units arranged in the axial direction of the bridge tower, and each consolidation unit comprises a plurality of second steel tubes; the second steel pipes are transversely connected with the two adjacent first steel pipes in the circumferential direction of the bridge tower, the bridge tower structure can be divided into a plurality of splicing sections by cutting the first steel pipes between the two adjacent consolidation units, and each splicing section at least comprises one consolidation unit. According to the concrete-filled steel tube bridge tower structure based on the specific design, the bridge tower is divided into the multiple splicing sections only by cutting along the first steel tube, so that prefabricated transportation and high-distance pouring construction of the bridge tower structure are conveniently achieved, aerial intersecting line welding is avoided, the construction difficulty is lowered, the welding seam quality is easier to guarantee. The construction efficiency is improved, the construction is convenient and fast, and the transportation cost and the construction cost are low.

Description

technical field [0001] The invention relates to the technical field of suspension bridges, in particular to a steel pipe concrete bridge tower and a construction method thereof. Background technique [0002] The main tower of the suspension bridge is the main load-bearing member of the suspension bridge to resist the vertical load, mainly under compression. The main tower of the traditional suspension bridge adopts concrete bridge tower, steel bridge tower and hybrid bridge tower structure; among them, the concrete bridge tower is widely used because of its high bearing capacity, but due to its large self-weight, the bearing capacity under earthquake will be lower instead, and the concrete bridge tower More sand and gravel are needed, the construction cost is high, and the construction period is generally more than one year, which takes a long time; the steel tower has a small weight, which is good for earthquake resistance, but the amount of steel is large and the cost is h...

AI Technical Summary

Problems solved by technology

The main tower of the traditional suspension bridge adopts concrete bridge tower, steel bridge tower and hybrid bridge tower structure; among them, the concrete bridge tower is widely used because of its high bearing capacity, but due to its large self-weight, the bearing capacity under earthquake will be lower instead, and the concrete bridge tower More sand and gravel are needed, the construction cost is high, and the construction period is generally more than one year, which takes a long time; the steel tower has a small weight, which is good for earthquake resistance, but the amount of steel is large and the cost is high, and the mountainous environment does not have large-scale The transportation conditions of steel components, and the steel box tower column is prone to vortex-induced vibration under the action of wind load; while the hybrid bridge tower has the advantages of both the concrete bridge tower and the steel tower, while having a high bearing capacity, it can to a certain extent Reduce the self-weight of the main tower, but it does not solve the problem fundamentally, and still has the inherent defects of concrete bridge towers and steel towers

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