Abnormal shape steel case and orthotropic plate bottom formwork combined type moving die carrier framework and construction method thereof
A technology of orthotropic plates and mobile formwork, which is applied in the direction of erecting/assembling bridges, bridge materials, bridges, etc., can solve the problems that the formwork through-hole technology cannot be adapted, and achieve good appearance quality, reasonable force, and high cost performance Effect
Active Publication Date: 2010-12-08
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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Problems solved by technology
For slab pier structures whose width is much larger than that of the bottom plate of concrete box girders, the conventional mobile formwork hole technology will not be able to adapt
Method used
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[0057] The combined mobile formwork of special-shaped steel box and orthotropic plate bottom formwork is mainly composed of load-bearing main girder (1), guide beam (2), supporting device (3), formwork system (4), and bottom formwork opening and closing system (5). , Longitudinal mold shifting system (6) and auxiliary structure.
[0058] 1. Load-bearing main beam: the main beam adopts special-shaped steel box girder, and a set of mobile formwork includes 2 main beams. The single main beam is manufactured in sections, and the sections are connected with bolts.
[0059] (1) Beam body: The beam body is a steel box structure, its top plate and inner web are inclined (the size of the external mold of the cast-in-place box girder), the bottom plate is horizontal, and the outer web is vertical. Partition plates and longitudinal stiffeners, bottom formwork hanging hinges and walkways are set at the bottom of the beams. Typical section of special-shaped steel box see image 3 . In or...
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A heterotype steel box and an orthogonal heterology plate bottom mold combined moving mould base and a construction method are provided, the load bearing beam of the moving mould base is the beam of the heterotype steel box, and a top plate and an inner web plate are the outer mould of a concrete box beam; the bottom mold employs orthogonal heterology structure, high toughness and low height, through opening and closing by flat pushing at one side, and line feed is performed in the space between the concrete box beam and a pier shaft. The main beam of the moving mold base is directly supported at the pier top, with the self-locking hydraulic jacket to transmit the load and adjust the height, the transverse moving of the moving mold base is finished at the pier top, and therefore, a steel structure landing leg is not required. The longitudinal moving of the moving mold employs a steel strand and a continuous hydraulic jacket for pushing and pulling, power for the longitudinal moving islocated at the front pier top, and removes the difficulty of the application of a bridge fabrication machine for a railway and a road bridge, is the construction equipment for the concrete box beam of the railway passenger line and used in the road bridge.
Description
technical field [0001] The invention relates to an innovative design and construction method of a mobile formwork used in cast-in-place box girders in bridge engineering. Background technique [0002] When the conventional mobile formwork travels through the hole, the formwork system (or bottom formwork system) will be divided into two in the direction of the bridge, and moved to both sides to the width of the pier body, using the space on both sides of the pier body File passed. The precondition is that the width of the pier body is close to the width of the bottom plate of the concrete box girder. For the slab pier structure whose width is much larger than the width of the concrete box girder bottom plate, the conventional mobile formwork passing technology will not be able to adapt. Contents of the invention [0003] The purpose of the present invention is to provide a new type of mobile formwork and its construction method with simple structure, simple operation, com...
Claims
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IPC IPC(8): E01D21/00E01D2/04E01D101/28
Inventor 李军堂马涛潘东发毛伟琦张瑞霞刘翠云姚发海
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD