CN215406745U

CN215406745U - Combined precast concrete wall connected by sleeve grouting

Info

Publication number: CN215406745U
Application number: CN202120536980.2U
Authority: CN
Inventors: 许晓春; 顾建群; 孙良君; 顾盛
Original assignee: Suzhou Wujiachen Construction Industry Co ltd
Current assignee: Suzhou Wujiachen Construction Industry Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2022-01-04
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses a combined precast concrete wall body connected by sleeve grouting, which comprises a shear wall, a light filler wall and a superposed beam which are integrally precast, wherein the shear wall, the light filler wall and the superposed beam are cast to form a whole body and have consistent thickness; shear force wall bottom and light infilled wall bottom have the difference in height structure, the bottom of shear force wall is provided with indentation portion and indented distance and equals the design thickness of shear force wall bottom seam, and shear force wall bottom still is provided with the sleeve, is provided with vertical connecting reinforcement in the shear force wall, vertical connecting reinforcement's lower extreme and sleeve correspond and are connected, the superposed beam setting at shear force wall top is stretched out to vertical connecting reinforcement's upper end. The wall surface leveling device is convenient and quick to install, high in construction efficiency, good in installation quality, high in wall surface flatness, free of plastering in the later period and greatly reduced in preparation and use cost.

Description

Combined precast concrete wall connected by sleeve grouting

Technical Field

The utility model relates to the technical field of assembly type buildings, in particular to a combined precast concrete wall body connected by sleeve grouting.

Background

The prefabricated building means that part or all of components and parts of the building are produced in a prefabrication factory and then transported to a construction site, and the components are assembled by adopting a reliable connection mode and a mounting machine to form the building with the design and use functions. Compared with the construction of a cast-in-place structure, the prefabricated structure has the advantages of convenience in construction, high engineering progress, small influence on the surrounding environment, easiness in ensuring the quality of building components and the like. The fabricated concrete structure has positive significance for promoting the urban construction process, improving the engineering quality, promoting energy conservation and emission reduction, improving the living environment, changing the production mode of the construction industry and the like.

At present, in an assembly type concrete shear wall structure, a precast concrete shear wall and a precast lightweight filler wall are separately manufactured and relatively independent, the precast concrete shear wall is firstly installed to form a main body structure, and then installation construction of the precast lightweight filler wall is carried out. The forming quality of the light filling wall cannot meet the plastering-free requirement, and a plastering layer and a hanging anti-cracking net must be arranged in a connecting area of the precast concrete shear wall and the precast light filling wall to prevent the precast light filling wall from cracking, so that the precast concrete shear wall and the precast light filling wall are both provided with the plastering layer of the whole wall, and the precast concrete shear wall and the precast light filling wall are arranged on the same plane to meet the decoration effect. In fact, the molding quality of the precast shear wall can meet the plastering-free requirement, and according to the existing construction process, the precast shear wall which originally does not need plastering is forced to be plastered on the whole wall, so that the defects of material waste, high cost, complex construction and long construction period exist.

Therefore, it is urgently needed to develop a combined precast concrete wall body connected by sleeve grouting to realize the integrated prefabrication and synchronous installation of the prefabricated light infilled wall and the precast concrete shear wall, and further improve the construction efficiency and the installation quality of the fabricated building.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a combined precast concrete wall connected by sleeve grouting, which is convenient and rapid to install, high in construction efficiency, good in installation quality, high in flatness of the surface of the wall, free of plastering in the later period and greatly reduced in preparation and use cost.

In order to solve the technical problems, the utility model provides a combined precast concrete wall body connected by sleeve grouting, which comprises a shear wall, a light filler wall and a superposed beam which are integrally precast, wherein the shear wall, the light filler wall and the superposed beam are cast to form a whole body and have consistent thickness; shear force wall bottom and light infilled wall bottom have the difference in height structure, the bottom of shear force wall is provided with indentation portion and indented distance and equals the design thickness of shear force wall bottom seam, and shear force wall bottom still is provided with the sleeve, is provided with vertical connecting reinforcement in the shear force wall, vertical connecting reinforcement's lower extreme and sleeve correspond and are connected, the superposed beam setting at shear force wall top is stretched out to vertical connecting reinforcement's upper end.

Furthermore, the light filling wall is composed of a reinforced concrete structural frame and a plurality of autoclaved light aerated concrete blocks, the autoclaved light aerated concrete blocks are distributed in the grids in the reinforced concrete structural frame, and the thickness of the autoclaved light aerated concrete blocks is consistent with that of the shear wall.

Furthermore, the length of the upper end of the vertical connecting steel bar extending out of the superposed beam is the sum of the designed thickness of the superposed floor slab, the designed thickness of the bottom joint of the shear wall and 8 times of the diameter of the vertical connecting steel bar.

Furthermore, the beam stirrups in the superposed beam are convexly arranged on the upper pouring surface of the superposed beam, and the height of the bulges is lower than the upper surface of the prefabricated floor slab assembled on the superposed beam; and beam bottom ribs in the superposed beams extend out of two ends of the superposed beams, and the extending parts are L-shaped and are used for anchoring into cast-in-place connecting sections between the superposed beams and other prefabricated walls.

Further, the transverse distribution ribs of the shear wall extend out of one side face of the shear wall, and the extending part is U-shaped.

Furthermore, a pre-buried hanging nail is arranged in the superposed beam.

Furthermore, embedded nuts for supporting are arranged on the shear wall and the light filling wall.

Furthermore, a key groove is formed in the side edge of the shear wall.

The utility model has the beneficial effects that:

1. the light infilled wall, the composite beam and the shear wall are integrally designed, prefabricated in factories and installed on site, the integrity of the components is higher, and the earthquake resistance of the house is stronger.

2. All walls in the design are prefabricated in factories, wall masonry and twice structural construction are not needed in a construction site, site construction templates and construction labor are reduced to the maximum extent, material loss is reduced, construction flying dust is reduced, construction water is reduced, and green construction is achieved.

3. The filler wall is prefabricated in a factory, no filler wall is constructed on a construction site, and common quality problems existing in traditional construction are essentially avoided.

4. After the main part construction is accomplished, only need to hang the net and criticize putty, reduce a large amount of materials and the recruitment of whitewashing, increase the usage space when avoiding whitewashing the quality general illness on the scene.

5. The integral assembly rate is improved to 70-80%, the construction period can be shortened by 10-20%, other components except for the on-site reinforcement binding and concrete pouring of the connecting nodes are all prefabricated in factories, the engineering quality is less influenced by climate and manpower, the durability of the components is longer, and the whole process of the whole quality is controlled and traceable.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

figure 3 is a schematic representation of the utility model in use.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1 to 3, an embodiment of the combined precast concrete wall connected by sleeve grouting according to the present invention includes an integrally precast shear wall 1, a lightweight filler wall 2, and a composite beam 3, wherein the shear wall, the lightweight filler wall, and the composite beam are cast to form an integral body and have uniform thickness, and specifically, reinforcement cages of the shear wall, the lightweight filler wall, and the composite beam are placed on the same casting platform and are bound and fixed to form an integral body, and then the integral body is cast in a unified manner to achieve the effect of integrally precast to form an integral body. The shear wall and the light infilled wall are adjacently arranged on the left and right sides, and the superposed beams are arranged above the shear wall and the light infilled wall and accord with the arrangement of wall structures.

The bottom of the shear wall and the bottom of the light filler wall are of a height difference structure, a retraction portion 4 is arranged at the bottom of the shear wall, the retraction distance is equal to the design thickness of a seam at the bottom of the shear wall and is usually 20 mm, a sleeve 5 is further arranged at the bottom of the shear wall, vertical connecting steel bars 6 are arranged in the shear wall, the lower ends of the vertical connecting steel bars are correspondingly connected with the sleeve, and the upper ends of the vertical connecting steel bars extend out of a superposed beam at the top of the shear wall. Due to the arrangement of the indentation part, when the integral assembly is carried out, the light filling wall is directly contacted with the floor slab 15 for hoisting and placing, a joint area exists after the light filling wall is in place, and the size of the joint is fixed, so that the stability of construction quality is ensured. The length that the superimposed beam was stretched out to the upper end of vertical connecting reinforcement equals coincide floor design thickness, shear wall bottom seam design thickness and 8 times vertical connecting reinforcement diameter three's sums, guarantees that steel bar muffjoint has effectual connection length.

The light infilled wall consists of a reinforced concrete structural frame 7 and a plurality of autoclaved lightweight aerated concrete blocks 8 which are distributed in grids in the reinforced concrete structural frame, when in preparation, the reinforcement cages in the shear wall, the superposed beam and the light filling wall can be bound firstly, then the steel reinforcement cages are placed on a pouring mould table, the steel reinforcement cages with the three structures are bound together to form a whole before pouring, when binding, a plurality of avoiding blank spaces are reserved on the light filling wall, before pouring, the autoclaved lightweight aerated concrete block is placed on a pouring mould platform corresponding to the avoiding blank spaces, and then pouring is carried out to form a shear wall, a superposed beam and the light filling wall, the autoclaved lightweight aerated concrete blocks are prepared in advance, and the reinforced concrete structural framework is combined with the autoclaved lightweight aerated concrete blocks into a whole through pouring concrete to obtain a lightweight filler wall;

the thickness of the autoclaved lightweight aerated concrete block is consistent with that of the reinforced concrete structural frame, and the evenness of the surface after preparation and forming is guaranteed to be consistent, namely in the preparation process, the thickness of the reinforced concrete structural frame is consistent with that of the autoclaved lightweight aerated concrete block, the autoclaved lightweight aerated concrete block is placed on a pouring mould table at the bottom due to the limitation of the pouring mould table, so that one surface of the filling wall can be guaranteed to be flat, the other surface of the filling wall is flush with the other surface of the autoclaved lightweight aerated concrete block through the limitation of the pouring thickness, and both surfaces of the filling wall can meet the evenness, the filling wall is of an integral structure, and the effect of avoiding plastering after the problems of unevenness, connection dislocation and the like do not exist.

In the structure prepared by the method, the lightweight infilled wall is provided with the reinforced concrete structural framework, so that the strength is high, the earthquake resistance and crack resistance are excellent, the autoclaved lightweight aerated concrete blocks in the reinforced concrete structural framework can ensure that the reinforced concrete structural framework is smoothly filled, the weight is light, and the weight of the integral wall body is effectively reduced compared with that of an integrally cast wall body.

The beam stirrups 9 in the superposed beam are convexly arranged on the upper pouring surface of the superposed beam, and the protruded height is lower than the upper surface of the prefabricated floor slab assembled on the superposed beam and used for cast-in-place combination; the beam bottom ribs 10 in the superposed beam extend out of two ends of the superposed beam, and the extending parts are L-shaped and are used for anchoring into cast-in-situ connecting sections between the superposed beam and other prefabricated walls. The transverse distribution ribs 11 of the shear wall extend out of one side face of the shear wall, the extending portion is in a U shape, effective combining capacity is provided, and key grooves 14 are formed in the side edges of the shear wall, so that the combining capacity is further improved.

For the convenience of construction, the built-in hanging nails 12 are arranged in the superposed beams. In order to facilitate assembly, the shear wall and the light filling wall are provided with embedded nuts 13 for supporting, and the embedded nuts are used for fixedly connecting inclined struts.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the utility model is all within the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

Claims

1. A combined precast concrete wall body connected by sleeve grouting is characterized by comprising a shear wall, a light filler wall and a superposed beam which are integrally precast, wherein the shear wall, the light filler wall and the superposed beam are poured to form a whole body and have consistent thickness; shear force wall bottom and light infilled wall bottom have the difference in height structure, the bottom of shear force wall is provided with indentation portion and indented distance and equals the design thickness of shear force wall bottom seam, and shear force wall bottom still is provided with the sleeve, is provided with vertical connecting reinforcement in the shear force wall, vertical connecting reinforcement's lower extreme and sleeve correspond and are connected, the superposed beam setting at shear force wall top is stretched out to vertical connecting reinforcement's upper end.

2. The combined precast concrete wall connected by grouting sleeves according to claim 1, wherein the light infill wall is composed of a reinforced concrete structural frame and a plurality of autoclaved lightweight aerated concrete blocks distributed in the squares in the reinforced concrete structural frame, and the thickness of the autoclaved lightweight aerated concrete blocks is consistent with that of the shear wall.

3. The precast concrete wall body of claim 1, wherein the length of the upper ends of the vertical connecting steel bars extending out of the composite beam is the sum of the designed thickness of the composite floor slab, the designed thickness of the bottom joint of the shear wall and 8 times the diameter of the vertical connecting steel bars.

4. The precast concrete wall unit connected by grouting sleeves according to claim 1, wherein the beam stirrups in the composite beam are protrudingly arranged on the upper casting surface of the composite beam, and the height of the protrusion is lower than the upper surface of the precast floor slab assembled on the composite beam; and beam bottom ribs in the superposed beams extend out of two ends of the superposed beams, and the extending parts are L-shaped and are used for anchoring into cast-in-place connecting sections between the superposed beams and other prefabricated walls.

5. The precast concrete wall unit connected by grouting with a sleeve according to claim 1, wherein the laterally distributed ribs of the shear wall extend out of one side surface of the shear wall, and the extending portion is U-shaped.

6. The precast concrete wall body of claim 1, wherein the overlapped beams are internally provided with embedded hanging nails.

7. The precast concrete wall unit connected by grouting sleeves according to claim 1, wherein pre-embedded nuts for supporting are provided on the shear wall and the lightweight infill wall.

8. The precast concrete wall unit connected by grouting sleeves according to claim 1, wherein key slots are formed at the side edges of the shear walls.