A kind of fish-belly continuous steel box girder with curved variable section and construction method thereof
A construction method and fish-bellied technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as difficulty in ensuring quality and difficulty in construction, and achieve a solution to technical difficulties in construction, improve construction efficiency, and facilitate construction. Effect
Active Publication Date: 2019-08-23
CHINA FIRST METALLURGICAL GROUP
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a fish-belly continuous steel box girder with curved and variable cross-section and its construction method in view of the defects in the prior art that the construction of the fish-belly continuous steel box girder is difficult and the quality is difficult to guarantee
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0028] Such as figure 1 As shown, the curved variable section fish-belly continuous steel box girder of the embodiment of the present invention includes: box girder cover plate 1, box girder arc plate 2, box girder partition 3, box girder longitudinal partition and reinforcing rib 4 and installation Tire frame 5; wherein: the tire frame 5 is installed at intervals, and the box girder arc plate 2 is arranged on the tire frame 5; the section of the box girder arc plate 2 is arc-shaped, and the cross-sectional area is not all equal; The partitions 3 are installed inside the box girder arc plate 2 at ...
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The invention discloses a curved variable cross-section fish-bellied type continuous steel box girder and a construction method thereof. The box girder comprises a box girder cover plate, a box girder arc plate, box girder partition plates, a longitudinal box girder partition plate and reinforcing rib, and installation jig frames. The construction method comprises the following steps that S1, according to the curve radius, the sectional dimension and the overall smoothness of different portions of the box girder, a deepening design drawing is obtained through computer building information model software and CAD two-dimensional deepening design; S2, the installation jig frames are erected on subsections according to construction requirements, positioning and lofting are conducted through an electronic total-station instrument, a theodolite and a balance level, the installation jig frames are assembled and built at lofting points, and the installation jig frames at all joints are welded and fixed and subjected to welding line detection after welding; S3, the box girder arc plate is manufactured and installed; S4, the box girder partition plates are manufactured and installed; S5, the longitudinal box girder partition plate and reinforcing rib is manufactured and installed; and S6, the box girder cover plate is manufactured and installed. According to the curved variable cross-section fish-bellied type continuous steel box girder and the construction method thereof, construction is convenient, the construction efficiency is improved, and the construction quality is ensured.
Description
technical field [0001] The invention relates to the technical field of construction of a steel structure box girder of a municipal engineering landscape bridge, in particular to a fish-belly continuous steel box girder with a curved variable cross-section and a construction method thereof. Background technique [0002] With the rapid development of the construction industry, urban bridges have higher and higher requirements for landscapes. Fish-belly box girder bridges are mostly designed. Fish-belly box girder bridges have the characteristics of beautiful appearance and conform to the aesthetic design of bridges. Ordinary fish-belly continuous Most of the box girders are of equal cross-section, and the assembly of the formwork in the construction of the box girder is relatively regular, while the shape and structural form of the fish-belly steel box girder with curved variable cross-section are complex, which brings new challenges to the design and construction of the steel ...
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IPC IPC(8): E01D2/04E01D21/00
Inventor 徐攀殷滇杨多娇徐兰张德松
Owner CHINA FIRST METALLURGICAL GROUP