Combined type bridge temporary support and construction method for rapidly building continuous beams by virtue of same

Abstract

The invention discloses a combined type bridge temporary support and a construction method for rapidly building continuous beams by virtue of the same. According to the combined type bridge temporary support, by virtue of adequate utilization of mechanical properties of materials of steel, wood and concrete, the problems of poor compressive stability and durability, convenience in mounting and dismounting, low in bridge positioning accuracy and the like of various existing bridge temporary supports are solved. A top-open wood sand box serves as a dry sand container, and the lateral pressure of the sand box is negligible under loading; steel pipes and sand serve as a loaded entirety, i.e., the extremely good compressive property and stability of sand under a lateral constrain condition are adequately utilized; a concrete cube has good compressive property as well; the bridge temporary support produced by combining the dry sand container, the loaded entirety and the concrete cube has the advantages of safety, economical efficiency, environmental friendliness and stability. The bridge temporary support is low in production cost, high in mounting and dismounting speeds, safe and stable and can be repeatedly and circularly used; by virtue of a rapid positioning method of a T-shaped beam plate, bridges can be accurately mounted in one time, and the actual application effect of the bridge temporary support is good.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction, in particular to a bridge temporary support and a construction method for quickly erecting continuous beams using it. Background technique [0002] Simply supported first and then continuous bridge is the bridge form widely used in my country, that is, the beam body is prefabricated in the prefabrication field and erected on site, which can give full play to the mechanical properties, effectively improve labor efficiency, save a lot of formwork and supports, and thus speed up the construction progress. Reduced construction costs. The upper and lower parts of the simply supported and then continuous bridge structure can be constructed at the same time, and the progress is fast. The construction method of the simply supported beam is used for the upper structure, but the continuous beam with a better structure is obtained. In my country's highway construction, a large number of...

AI Technical Summary

Problems solved by technology

[0011] The process of temporary support for steel sand box is relatively complicated. In the case of standardized use, it needs to be customized in batches, which consumes a lot of labor and requires a large steel beam. In the case of small turnover, the cost of use is high

[0012] The sand release hole of the steel sand box is generally sealed with wooden wedges or screws. During the construction process, the seal will fall off, causing sand to leak out and causing quality accidents such as beam and slab sinking.

[0013] 3. Some bridge temporary supports of other structural forms are also used on the construction site, such as wooden sand box temporary supports, etc., but these bridge temporary supports are generally used for small bridges or bridge temporary supports with a small demand Bridges or other unloading devices that are not high, have low reliability, difficulty in dismantling, or synchronization problems that cannot guarantee unloading

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