Prefabricated shear wall in cast-in-situ connection mode

Abstract

The invention relates to a prefabricated shear wall in a cast-in-situ connection mode. The prefabricated shear wall comprises a wall, pier heads, bottom upper concave sections and a bottom outer side plate. Side edges are respectively arranged on two sides of the wall, and a groove is formed in the middle of each side edge and is vertically perforated through the wall; wall vertical reinforcing bars are arranged in the wall; the bottom upper concave sections are uniformly distributed at the bottom of the wall; each pier head is arranged between the two corresponding adjacent bottom upper concave sections; air holes are formed in positions above the middles of the bottom upper concave sections; the air holes are communicated with the bottom upper concave sections via pipelines; the thicknesses of the pier heads are identical to the thickness of the wall, and holes are formed in the pier heads; the bottom outer side plate and the wall are integrated with each other, and the bottom outer side plate is positioned on the outer sides of the bottom upper concave sections; internally threaded pipes are embedded in positions close to the side edges of the wall, above the bottom upper concave sections and on the pier heads. The prefabricated shear wall in the cast-in-situ connection mode has the diversified advantages of firm structure, convenience in construction, reliability in connection and the like.

Description

【Technical field】 [0001] The invention relates to a shear wall, in particular to a prefabricated shear wall adopting a cast-in-place connection mode, and belongs to the technical field of construction engineering. 【Background technique】 [0002] The industrialization of construction is an inevitable direction for the development of China's construction industry. At present, prefabricated integral shear walls are being promoted in China. The bottom of the prefabricated shear wall is horizontal, and some vertical steel bars are connected with the lower vertical steel bars of the shear wall by pre-embedded grout anchor sleeves, while the rest of the vertical steel bars are not connected at all. Although the experimental results of this approach in the laboratory can meet the force requirements, there are many problems in reality, and it also leaves many quality problems for the building structure. If due to prefabrication or construction errors, the upper and lower shear wal...

AI Technical Summary

Problems solved by technology

Although the experimental effect of this method in the laboratory can meet the force requirements, there are many problems in reality, and it also leaves many quality problems for the building structure.

If due to prefabrication or construction errors, the upper and lower shear wall steel bars may be misaligned. At this time, it is difficult to insert the lower steel bars into the slurry anchor sleeves. In addition, the connection method of the slurry anchor sleeves requires a certain anchorage length for the upper and lower steel bars. , the steel bar should be placed in the center of the grouting anchor casing, and the grout should be injected from the grouting hole in the lower part of the grouting anchor casing at a constant speed, and flow out from the upper grouting hole; but in the field operation, the anchoring of the steel bar often occurs Insufficient length, steel bars sticking to the casing wall, grouting from top to bottom or rapid grouting, resulting in insufficient grout in the casing, etc. These problems are difficult to check and rework once the construction is completed , leaving permanent quality problems

In addition, the vertical reinforcement of the prefabricated shear wall does not connect up and down, after all, it weakens the shear resistance of the shear wall. At the same time, the bottom of the shear wall is horizontal, which also creates horizontal construction joints, which brings the possibility of water seepage in the later stage.

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