Limiting anti-overturning device of bridge aerial work platform supporting system and construction method

Abstract

The invention discloses a limiting anti-overturning device of a bridge aerial work platform supporting system; the device comprises a cross-core rod horizontally arranged on a bridge pier in a penetrating manner, a jack is vertically arranged on channel steel above the cross-core rod, a platform main beam is arranged above the jack, and the device also includes an anti-overturning box; the anti-overturning box is defined by two half buckles and is locked and fixed to form a rigid box, the main body of the jack is covered in the rigid box, and the top end of the jack penetrates through the anti-overturning box to abut against the bottom of the platform main beam. Meanwhile, the invention further provides an anti-overturning construction method of the bridge aerial work platform supporting system. The anti-overturning box completely wraps the jack to limit the displacement phenomenon of the jack; once the jack fails, the main beam of the platform directly falls above the anti-overturning box, the rigid box plays a role in temporarily supporting the operation platform, escape time is reserved for operators, enough time can be reserved even if the jack fails, so that safe escape of the operators is guaranteed, and the anti-overturning device has the advantages of being convenient to install and safe and reliable to use.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a device for preventing the support system of a bridge aerial work platform from overturning, and a construction method for preventing the overturning of a bridge aerial work platform support system. Background technique [0002] Such as figure 1 As shown, when constructing the lower structural girder and cover girder of the bridge with the traditional technology, the piercing rod 2 is horizontally pierced on the pier 1, and the jack 3 is placed on the channel steel 4 above the piercing rod 2, and the top of the jack 3 is the main girder of the platform 5 (using 45a I-beam), the distribution beam and the operation platform are arranged on the platform main beam 5, and the distribution beam and the operation platform are supported by the jack 3. The traditional approach mainly has the following shortcomings: [0003] (1) When installing the jack, it is necessary...

AI Technical Summary

Problems solved by technology

[0003] (1) When installing the jack, it is necessary to adjust the left and right jacks to the same height. If there is a deviation in the height, the main girder of the platform will be tilted after erection, and there will be a risk of slippage in the jack, which will cause an imbalance of force and eventually lead to the overturning of the support system, making installation difficult

[0004] (2) After the installation of the jack is completed, the main beam of the platform is directly erected above the jack. The contact area between the jack and the main beam of the platform is too small.

[0005] (3) The main beam of the platform is directly laid on the jack, and the jack itself has no fixing and limiting device. Once the jack slips or fails, the entire operation platform will be unstable and overturned. The safety of personnel cannot be guaranteed, which increases the danger of working at heights coefficient, poor safety performance

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