Mobile formwork bridge fabrication machine and construction method for cast-in-situ bridge fabrication

Abstract

The invention relates to a mobile formwork bridge fabrication machine and a construction method for cast-in-situ bridge fabrication. According to the mobile formwork bridge fabrication machine, a front auxiliary supporting leg is arranged at the front end of a front guide beam, a rear auxiliary supporting leg is arranged on a rear guide beam, and a front main supporting leg and a rear main supporting leg are arranged on a bearing main beam; a rail is arranged below the bearing main beam and the rear guide beam, a reinforcement cage lifting system is arranged on the rail, and multiple sets of hanging outer ribs are arranged at the left and right sides of the bearing main beam and connected with the bearing main beam; the rear auxiliary supporting leg and the rear main supporting leg can upwards rotate and be folded, the heights of the front auxiliary supporting leg and the front main supporting leg can be adjusted, and a reinforcement cage binding mobile jig frame is distributed on thepoured beam surface on the rear portion. According to the construction method for cast-in-situ bridge fabrication, the mobile formwork bridge fabrication machine is adopted; by using the machine and the method, for cast-in-situ bridge fabrication, the processes of reinforcement binding, inner mold splicing and prestressed reinforcement pipe installation and the processes of concrete pouring, maintenance and tension of bridges can be conducted synchronously, and the construction period of cast-in-situ bridge fabrication can be effectively shortened.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a mobile formwork bridge building machine and a construction method for a cast-in-place bridge. Background technique [0002] According to the national medium and long-term railway network plan, the mileage of high-speed railways should reach 45,000 kilometers. At present, the operating mileage of China's high-speed railways has reached 22,000 kilometers, and there is still a large amount of railway mileage to be built. [0003] As an important part of high-speed rail lines, bridges account for more than 50%. How to quickly manufacture and erect beams is the key to ensuring the construction period. As the high-speed railway construction advances towards the western mountainous area, the construction of the beam field is becoming more and more difficult; the construction of the beam field is not economical due to the fact that the number of counter beams is less than 150 holes,...

AI Technical Summary

Problems solved by technology

[0005] The above seven processes must be carried out in sequence, which leads to low work efficiency and high construction costs; and the steel bars are bound on site in the cavity of the outer mold system of the formwork, so quality control is difficult; the inner mold system needs to wait until the end and the web steel bars are formed manually, which is difficult Large, slow speed, long waiting time for different types of work, insufficient utilization of labor force, long construction period, high construction cost, and poor economy

[0006] For example, the prior invention patent ZL 201510692243.0 discloses a cast-in-place construction method for the sound barrier beam flange plate of the mobile formwork vehicle, which mainly includes "construction preparation → formwork vehicle assembly → walking in place, inspection equipment → external formwork system falling into place → Installation of fine-rolled rebar → preparation of steel bars, placement of embedded parts → installation of hanging formwork and formwork → concrete pouring → formwork removal → lifting of bottom formwork, transition” and other steps, all processes cannot be carried out at the same time, the construction efficiency is low and the cycle is long

[0007] Therefore, there is a lack of equipment and methods that can effectively shorten the construction period of cast-in-place bridges in the prior art

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