Method for integrally disassembling descending movable formwork bridging machine

Abstract

The invention discloses a method for integrally disassembling a descending movable formwork bridging machine. The equipment for disassembling the movable formwork bridging machine comprises a bottom horizontal support system, two main girders, two nose girders, an external mold system, a front portal and a rear portal, wherein the bottom horizontal support system comprises two sets of pier-side brackets, a support trolley is installed on the pier-side brackets, and the two main girders are connected through multiple connection girders. The method comprises the following steps: (1) dismantling the front and rear portal and the nose girders; (2) installation of lifting system: installing a lifting system for lifting the disassembled movable formwork bridging machine on a constructed continuous girder by adopting lifting equipment; (3) hoisting the main girders, and longitudinally moving the pier-side brackets and the support trolley; (4) downward moving; (5) dismantling the pier-side brackets and the support trolley; (6) further downward moving; and (7) disassembling on the ground. The method disclosed by the invention is simple in step, reasonable in design, convenient in disassembly of the bridging machine, good in using effect, and capable of simply, conveniently and quickly finishing the disassembly processes of the movable formwork bridging machine; and the disassembly processes are safe, economical and practical.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to an integral disassembly method of a downward mobile formwork bridge building machine. Background technique [0002] The mobile formwork bridge building machine (referred to as the mobile formwork) is an advanced equipment for in-situ cast-in-place large girders, but its structural size and self-heavy weight of the components, after the beams are made, how to safely unload them is a key process. For example, when the large-scale bridge equipment MZ32 mobile formwork bridge-building machine is used to construct a long-span continuous box girder up to tens of meters, the mobile formwork bridge-building machine is mainly composed of front and rear masts, formwork systems, main girders, trolleys, and piers. The side bracket, column and electro-hydraulic system are composed of parts with a total weight of about 542t, of which the outer mold and support rod weigh...

AI Technical Summary

Problems solved by technology

Due to the shielding of the flange plate of the beam body, it is difficult to remove it with a large crane

[0003] Nowadays, there are mainly two methods for dismantling the downward mobile formwork bridge building machine: the first is to use the mobile formwork to retreat and dismantle at a high altitude: this method can be used with front and rear guide beams and can move forward and backward. The cost of this type of mobile formwork is more than 2 million yuan higher, and the high-altitude dismemberment of large-scale construction has great safety risks, cumbersome procedures, and many related auxiliary facilities and equipment; the second method is to remove the guide beams and formwork in advance System, this method is to dismantle from the top surface of the box girder, but because the box girder has been poured, it is difficult for the mobile formwork bridge building machine to remove it from the top surface of the box girder; This needs to reserve more holes on the box girder, and the working space between the mobile formwork bridge building machine and the box girder after demoulding is small, the implementation consumes many resources, the cycle is long, the safety risk and cost are high, and the operation is very difficult. difficulty

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