Bailey beam support construction method based on variable section capping beam and support building system

Abstract

The embodiment of the invention discloses a bailey beam support construction method based on a variable section capping beam and a support building system. The bailey beam support construction methodbased on the variable section capping beam comprises the steps of step S1, construction of a support foundation; step S2, mounting of steel uprights; step S3, erection of multiple groups of bailey beam groups; step S4, mounting of upper I-shaped steel; step S5, laying of square timber and a bottom die; and step S6, construction of the variable section capping beam. According to the bailey beam support construction method based on the variable section capping beam and the support building system, as the support building system is a support system adopting the steel uprights+bailey beams+I-shaped steels, the pouring quality and safety of a diagonal bracing system at the variable section part can be guaranteed, the construction progress is accelerated, the construction period is shortened, the cost of the support construction system is also reduced, and the amount of labor used is reduced; with the continuous advancement of construction technology, it is particularly important to pay attention to the construction efficiency and quality; and the adoption of a bailey support system is undoubtedly more time-saving, economic, scientific and feasible.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of bridge construction, in particular to a construction method and a supporting building system for a Bailey beam support based on a variable-section cap beam. Background technique [0002] Zhengzhou 107 auxiliary road rapid transformation project PPP project first tender section (North Fourth Ring Interchange-Yangjin Road) covers a total of 2.4Km, and the entire line of the tender section adopts the form of a viaduct. 13 beams. Among them, the longest is 57.8m, the maximum span of a single hole is 28.9m, and the concrete pouring volume is more than 600m 3 , the height of the pier column is as high as 19.25m; and the setting of the cover beam is at an angle of 50° with the existing bridge. Under the bridge is the Jialu River with a width of 60m. The beach on both sides is heavily waterlogged and mostly silt. The geological conditions are poor and the construction conditions are ext...

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Problems solved by technology

Among them, the longest is 57.8m, the maximum span of a single hole is 28.9m, and the concrete pouring volume is more than 600m 3 , the height of the pier column is as high as 19.25m; and the setting of the cover beam is at an angle of 50° with the existing bridge. Under the bridge is the Jialu River with a width of 60m. The beach on both sides is heavily waterlogged, mostly silt. The geological conditions are poor and the construction conditions are extremely affected. The construction period is very tight, and the construction environment is very complicated, which brings great difficulties to the construction.

[0003] During the construction of the cover beam at this part, due to the complex environment and limited conditions, many supports are erected as the support system, which cannot meet the construction requirements

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