Advance closed structure and construction method of post-cast belt on basement exterior wall

Abstract

The invention relates to a basement exterior wall post-cast strip advanced sealing structure. The basement exterior wall post-cast strip advanced sealing structure is characterized by comprising a sealing plate (4), a brick masonry protection layer (5), a waterproof layer (6), a mortar leveling layer (7), a connecting steel plate (8), a water stop steel plate (9), connecting cotters (10) and the like; the sealing plate (4) is assembled on the outer side of the mortar leveling layer (7), protruding bars (43) at the upper end of the sealing plate (4) are embedded in grooves (44) in the lower end of the sealing plate (4) and are connected with the grooves (44) in the lower end of the sealing plate (4) into a whole through connecting ribs (45) in the perpendicular direction; one end of the connecting steel plate (8) is clamped in clamping grooves (48) in the sealing plate (4) and are provided with reinforcing steel bar penetrating holes, and horizontal bars penetrate in the reinforcing steel bar penetrating holes and are welded to the connecting steel plate (8); and the other end of the connecting steel plate (8) is provided with post-cast strip formwork fixing and connecting screw rods (15). The basement exterior wall post-cast strip advanced sealing structure belongs to the field of basement exterior wall and post-cast strip construction in industrial and civil construction body structures and has the beneficial effects that advanced water stop and soil retaining effects are good, and the construction speed is high; and good technological and economic benefits are achieved.

Description

technical field [0001] The invention relates to an advanced sealing structure and construction method of the post-cast belt of the basement exterior wall, which belongs to the construction field of the basement exterior wall and the post-cast strip in the main structure of industrial and civil buildings, and is mainly used in the advanced protection of the post-cast strip of the basement exterior wall and the later post-casting Pouring strip concrete under construction. Background technique [0002] In the construction of the basement exterior wall, due to the limitation of the length of the wall in a single construction and the requirement of deformation control during construction, it is necessary to set a post-casting belt on the exterior wall of the basement. The construction work carried out before the post-poured belt of the basement exterior wall is closed not only has potential safety hazards, but also debris, rainwater and construction water are easy to enter the ba...

AI Technical Summary

Problems solved by technology

The construction work carried out before the post-pouring belt of the basement exterior wall is closed is not only a safety hazard, but also debris, rainwater and construction water are easy to enter the basement before the post-pouring belt is closed, affecting the quality and normal construction of the post-pouring belt

The time interval for concrete pouring of the post-cast belt of the outdoor wall of the basement is long. Generally, the construction of the post-cast belt needs to be carried out after the construction of the main underground structure is completed. Can not provide the necessary site for the main structure and equipment installation

[0003] At present, the post-cast belt of the basement exterior wall is closed in advance by using a prefabricated concrete closing slab for construction. The closed structure and construction method have been described in the document "Construction Technology of the Outer Groove Formwork of the Post-cast Zone of the Basement Exterior Wall" ("Construction Technology", 2015, 44( 23): 85-87), which solved the problem of soil retaining and anti-seepage of post-pouring belt advanced closed structure, but there are still the following problems: (1) The closed structure is assembled from multiple prefabricated panels, and during construction It is easy to tilt and shift, which leads to the serious displacement of the closed structure under the structural deformation during the post-pouring belt pouring in the later stage, which affects the construction; (2) The closed structure itself is not impermeable, and the waterproof layer is torn on the outside due to large construction deformation. When it is damaged, the waterproofing of the closed structure cannot work; (3) the basement exterior wall and post-cast concrete pouring formwork are complicated

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