Two-way adjustable connecting device and construction method thereof

Abstract

The invention discloses a two-way adjustable connecting device and a construction method thereof, relating to the field of erection construction of steel box girders of suspension bridges. The two-way adjustable connecting device comprises a first connection mechanism, a first adjusting rod, a second connection mechanism and a second adjusting rod, wherein the first connection mechanism comprises a limiting truss, a first anchor girder and a second anchor girder; the limiting truss is fixed on the first steel box girder; the first anchor girder and the second anchor girder are fixed on the second steel box girder; the limiting truss at least partially extends out of the first steel box girder and is located at the upper part of the second steel box girder; the first adjusting rod passes through and is fixed on the limiting truss and the first anchor girder; the first adjusting rod can move along the girder surface direction vertical to the second steel box girder; the second connection mechanism comprises a limiting girder which is fixed on the second steel box girder; the height of the limiting girder is greater than a height difference between the first steel box girder and the second steel box girder; and the second adjusting rod passes through and is fixed on the limiting girder and the second anchor girder, can move along the longitudinal direction of the first steel box girder and can slide along the limiting girder. Line-type control on the steel box girders is facilitated; the steel box girders can be adjusted and limited along with girder segment erection; and the girders are kept stable.

Description

technical field [0001] The invention relates to the technical field of steel box girder erection construction of a suspension bridge, in particular to a two-way adjustable connection device and a construction method thereof. Background technique [0002] The current steel box girder of suspension bridges is generally a streamlined flat closed single box structure, and the girder sections are connected by butt penetration welds. In the construction of the steel box girder erection, the steel box girder section is first vertically lifted by the cable-loaded crane. The lifting sequence is carried out from the mid-span to the two towers. , After closing, the circular seams are welded one by one. [0003] However, due to the limitation of external conditions, the hoisting sequence of some steel box girders was changed from the two towers to the mid-span direction, resulting in a large height difference and longitudinal gap between adjacent steel box girders, and the height diffe...

AI Technical Summary

Problems solved by technology

[0003] However, due to the limitation of external conditions, the hoisting sequence of some steel box girders was changed from the two towers to the mid-span direction, resulting in a large height difference and longitudinal gap between adjacent steel box girders, and the height difference and gap will be carried out with the construction progress. Therefore, it is no longer applicable to weld the circular seam one by one after the closure by installing the temporary connection between the beam sections, which cannot meet the adjustable two-way limit required by the construction.

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