Assembly type prefabricated shear wall horizontal abutted seam steel channel welding and connecting device and connecting method

Abstract

The invention discloses an assembly type prefabricated shear wall horizontal abutted seam steel channel welding and connecting device and a connecting method. An upper steel channel of the device is composed of a flange and a web, and a lower steel channel of the device is composed of a flange and a web. The web of the upper steel channel is arranged in the mode of being closely attached to the bottom face of an upper prefabricated shear wall. The flange of the upper steel channel is upward and is welded to upper connecting reinforcement. The web of the lower steel channel is arranged in the mode of being closely attached to the top face of a lower prefabricated shear wall. The flange of the lower steel channel is downward and is welded to lower connecting reinforcement. The upper steel channel of the upper prefabricated shear wall and the lower steel channel of the lower prefabricated shear wall are connected through steel channel edge weld seams. The upper connecting reinforcement and the lower connecting reinforcement are connected in an aligned mode. When the upper prefabricated shear wall and the lower prefabricated shear wall are spliced, by connecting a temporary fixing rod with an upper raise ear and a lower raise ear, the upper prefabricated shear wall and the lower prefabricated shear wall are fixed temporarily, and then welding is carried out on side edges of the steel channels to connect the upper steel channel and the lower steel channel. According to the device, the assembly process of the prefabricated shear walls can be simplified, the construction period can be shortened, labor consumption is reduced, and site pollution and material waste are reduced.

Description

technical field [0001] The present invention relates to a connection method of prefabricated shear walls, in particular to a welding connection device and connection method for horizontal seam channel steel of prefabricated prefabricated shear walls. The connection of patchwork belongs to the field of construction engineering. Background technique [0002] Shear wall is a very widely used component type in construction engineering, which is used to bear vertical loads (such as the self-weight of buildings, service loads, etc.) and horizontal actions (such as wind, horizontal earthquakes, etc.). In general, the shear wall bears shear force, bending moment and axial force. [0003] There are generally two ways to construct shear walls: "cast-in-place" and "assembly". "Cast-in-place" is a traditional construction method: tie steel bars on the construction site, set up formwork and supports, pour concrete into the formwork and vibrate compactly, and the formwork can be removed...

AI Technical Summary

Problems solved by technology

According to the existing technology of using the sleeve grouting connection device, the number of sleeves is the same as the number of vertical steel bars in the upper prefabricated shear wall 1 and the lower prefabricated shear wall 4, which requires a lot of sleeves, and the material cost is very high. Moreover, each sleeve needs to be embedded in an accurate position, and grout needs to be filled into the sleeve, which is difficult and time-consuming

[0021] 2. According to the existing technology using the slurry anchor connection device, the number of spiral hoops is the same as the number of vertical steel bars in the upper prefabricated shear wall 1 and the lower prefabricated shear wall 4, which requires a lot of spiral hoops, and the material cost is very high , and each spiral hoop needs to be embedded in an accurate position, and needs to be grouted into the sleeve, which is difficult and time-consuming

[0022] 3. According to the existing technology of adopting the pre-welded steel plate and the steel bar welding connection device, the upper connecting steel bar 3 and the connecting steel plate 8 need to be overlapped and welded, and then the lower connecting steel bar 5 and the connecting steel plate 8 should be overlapped and welded. There are many, so the welding cost is very high, and it is time-consuming

[0023] 4. According to the existing technology of adopting the lap joint welding connection device of steel bars, the upper connecting steel bars 3 and the lower connecting steel bars 5 need to be welded one by one by lap joints. Due to the large number of steel bars, the welding cost is very high and labor-consuming

The bottom of the upper prefabricated shear wall 1 also has such horizontally distributed steel bars. According to the existing technology of using pre-welded steel plate and steel bar welding connection device and adopting the overlapping welding connection device of steel bars, there are concave holes at the bottom of the upper prefabricated shear wall 1. grooves, which caused inconvenience in the manufacture of the upper prefabricated shear wall 1, and also hindered the setting of horizontally distributed steel bars in the upper prefabricated shear wall 1

[0026] 7. In order to ensure the quality of grouting and compact connection, a gap of 20 mm is set between the upper prefabricated shear wall 1 and the lower prefabricated shear wall 4 in the prior art, so that before the post-grouting material reaches a certain strength, it must be installed Enough and reliable brackets can make the upper prefabricated shear wall 1 positioned and stable, which consumes materials and man-hours

However, this will easily cause dislocation of the upper prefabricated shear wall 1 and the lower prefabricated shear wall 4 when the upper prefabricated shear wall 1 is hoisted, making it difficult to align

Images