Corrugated steel web temporary fixation structure independent of template

Abstract

The invention discloses a corrugated steel web temporary fixation structure independent of a template. The corrugated steel web temporary fixation structure comprises a plurality of corrugated steel web sections, longitudinal steel supports and transverse steel supports; the multiple corrugated steel web sections are combined to form a square structure, every two adjacently-arranged corrugated steel web sections are fixedly connected through the corresponding longitudinal steel supports, and every two oppositely-arranged corrugated steel web sections are fixedly connected through the corresponding transverse steel supports; and the number of the longitudinal steel supports for connecting two adjacent corrugated steel web sections is two, and the two longitudinal steel supports are arranged in parallel. By means of the temporary fixation measures, the problem that during construction at present, steel webs are fixed through bottom dies or side dies, consequently, sampling wastes time, and plane deviations are caused on the steel webs before and after pouring is carried out is solved, and influences of the deviations of the steel webs on box girder stress are reduced.

Description

technical field [0001] The invention relates to a construction technology for temporarily fixing corrugated steel webs by cantilever pouring, in particular to a temporary fixing structure for corrugated steel webs independent of formwork. Background technique [0002] Comparing with the traditional prestressed concrete box girder bridge, corrugated steel web prestressed composite box girder bridge has developed rapidly in my country in recent years due to its advantages of lower dead weight, better seismic performance, high prestressing efficiency, and clear force. According to the needs of construction, the span gradually increases, and the weight of a single corrugated steel web can reach about 10t. The temporary fixing structure of the corrugated steel web has a great influence on the alignment and force of the steel web after pouring. [0003] At present, the temporary fixing measures adopted in the construction all need to rely on the side form to form the overall struct...

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Problems solved by technology

[0003] At present, the temporary fixing measures adopted in the construction all need to rely on the side form to form the overall structure fixation or rely on the bottom form to fix the steel web through other structures. The steel web can only be adjusted after the bottom form is set out, and the side form or bottom form is under construction If there is any deflection in the center, the steel web will also deflect accordingly. If this happens after the steel bars are bound, it is difficult to adjust

In actual construction, although the position of some segmental steel webs is correct before pouring, there will still be large deviations after pouring, indicating that the position of steel webs may still be affected by mold expansion or the connection between steel webs and roof and bottom plates during pouring. Changes due to structural damage

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