Box girder formwork
A box girder and mandrel technology, applied in bridges, bridge construction, mold separation devices, etc., can solve problems such as damage to the corners of box girders, and achieve a stable formwork structure
Active Publication Date: 2020-10-27
安徽鸿宇路桥工程有限公司
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Problems solved by technology
[0006] The box girder needs to be poured with molds. The current box girder formwork includes an outer mold, a core mold, and an end mold. The outer mold is an integral structure, and taking out the box girder is likely to cause damage to the corners
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[0030] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.
[0031] A box girder formwork, such as figure 1 , including a base 1, an outer mold 2, a core mold 3, and an end mold 4, all of which are made of steel.
[0032] Such as figure 2 The outer mold 2 includes a bottom plate 21 fixed on the base 1, and side plates 22 symmetrically arranged on both sides of the bottom plate 21. The bottom of the side plate 22 is in contact with the bottom plate 21, and the side plate 22 is arranged to be inclined outward from the place where it abuts against the bottom plate 21. A guide plate 23 is welded at the bottom of the side plate 22, the bottom of the guide plat...
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The invention discloses a box girder supporting formwork which comprises a base, an outer mold, a core mole and an end mold, wherein the outer mold comprises a base plate fixed on a base and side plates symmetrically arranged on two sides of the base plate; the base plate and the side plates form an accommodating space for the placement of the core mold; a hydraulic cylinder for driving the side plates to translate is fixed on the base; the end mold closes two ends of the outer mold and is fixed on the base; the core mold is located in the accommodating space and has two ends penetrating through the end mold; electromagnetic iron plates are fixed on outer walls of the side plates; a rod assembly is arranged between the core mold and each side plate; the rod assembly comprises a steel sleeve having two ends respectively abutted against inner walls of the side plates and an outer wall of the core mold, and a screw rod stretching into the steel sleeve and subjecting to threaded connectionwith the steel sleeve; one end of the screw rod far away from the steel sleeve penetrates through the core mold and is connected with a fixing nut; and the outer mold is separated to facilitate removal of a box girder.
Description
technical field [0001] The invention relates to bridge construction, in particular to box girder formwork. Background technique [0002] Box girder is a kind of middle beam in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, which is similar to a box, hence the name. Divided into single box and multi-box. [0003] The box girder of reinforced concrete structure is divided into prefabricated box girder and cast-in-place box girder. The prefabricated box girder combined with the bridge erecting machine can be erected after the completion of the substructure, which can speed up the progress of the project and save the construction period; the cast-in-place box girder is mostly used for large continuous bridges. Commonly divided by materials, there are two main types, one is prestressed reinforced concrete box girder, and the other is steel box girder. Among them, the prestressed reinforced concrete box girder is constructed on site. In...
Claims
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IPC IPC(8): B28B7/26E01D21/00E01D2/04
Inventor 汪庭魏刚周魏鑫段侠光
Owner 安徽鸿宇路桥工程有限公司