CN219280952U

CN219280952U - Vertical waterproof structure of prefabricated outer wall component

Info

Publication number: CN219280952U
Application number: CN202320824884.7U
Authority: CN
Inventors: 周渊; 林志芬; 沈俊; 周鹣鸣; 黄岚
Original assignee: Shanghai Zhuzong Engineering Materials Co ltd; Shanghai Urban Construction Materials Co ltd
Current assignee: Shanghai Zhuzong Engineering Materials Co ltd; Shanghai Urban Construction Materials Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-06-30
Anticipated expiration: 2033-04-13

Abstract

The utility model relates to the technical field of waterproof of prefabricated outer walls, in particular to a node waterproof structure of a prefabricated outer wall component and a vertical cast-in-place position, which comprises a cast-in-place concrete structure and a prefabricated component connected with the cast-in-place concrete structure, wherein waterproof paint is arranged on the outer side of the joint of the cast-in-place concrete structure and the prefabricated component, and a reverse inclined plane is arranged on the outer side of the joint of the prefabricated component and the cast-in-place concrete structure; the prefabricated component is equipped with logical groove with cast in situ concrete structure junction one side far away from the outdoor, leads to the inslot to be filled with flexible material. Compared with the prior art, the utility model has the advantages that: the water seepage and water leakage problems of the waterproof connection of the assembled concrete outer wall are effectively solved; the problem of high maintenance cost in the later period is reduced, and the waterproof effect and the same service life of the building are realized.

Description

Vertical waterproof structure of prefabricated outer wall component

Technical Field

The utility model relates to the technical field of prefabricated outer wall waterproofing, in particular to a node waterproof structure of a prefabricated outer wall component and a vertical cast-in-situ position.

Background

The technology of the waterproof node of the assembled outer wall of the engineering site still needs to be improved, the hidden danger of structural safety and leakage caused by improper design of the waterproof node of the outer wall of partial engineering exists, and the technology of the waterproof node of the vertical joint of the prefabricated outer wall and the cast-in-place concrete is imperfect.

With the use of a large number of assembled residential buildings, the water seepage and water leakage problems of the outer protection system are increasingly prominent. The problem of water leakage is an important problem about 'settling' of common people, is also a problem to be solved urgently in the development of the assembled residential building, and is required to improve the overall waterproof reliability of the assembled residential building through a more scientific design.

Referring to fig. 5, the prefabricated outer wall waterproof structure in the prior art mainly realizes a waterproof function through a layer of waterproof material, and has the following defects:

(1) The design life of the waterproof material of the decorative layer is far lower than that of the structure, and rainwater is directly contacted with the structure after the waterproof material fails. The structure is formed by combining prefabricated components and cast-in-place concrete. The waterproofing material during the design life is also affected by the level of worker construction, possibly resulting in the functional failure of the local waterproofing material.

(2) The prefabricated part and the cast-in-place concrete have different pouring time, different shrinkage rates in the same time, and shrinkage cracks are easy to form at the joint, and the joint surface of the prefabricated part and the cast-in-place concrete in the prior art is flat and straight. In strong wind weather, rainwater is easy to be affected by wind pressure, and gradually permeates into the shrinkage cracks in the indoor direction. If the water in the crack is not evaporated completely, the crack can be enlarged under the action of freeze thawing, and the hidden trouble of indoor water seepage is further increased.

Therefore, the technical problems to be solved at present are as follows: the waterproof problem of the prefabricated outer wall component and the node of the vertical cast-in-situ position is solved, the rigid waterproof (the vertical reverse guide slope rabbet and the inner notch) double waterproof design is adopted, so that the waterproof material has the same service life as a building, the defect that the effective life of the design of the improved flexible waterproof material is far lower than the service life of the building is overcome, and the water leakage phenomenon of the outer wall of the current Shanghai fabricated building residence is changed.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the vertical waterproof structure of the prefabricated outer wall component with better waterproof effect.

In order to achieve the above purpose, a vertical waterproof structure of a prefabricated outer wall component is designed, and comprises a cast-in-place concrete structure and a prefabricated component connected with the cast-in-place concrete structure, wherein waterproof paint is arranged on the outer side of the joint of the cast-in-place concrete structure and the prefabricated component, and a reverse inclined plane is arranged on the outer side of the joint of the prefabricated component and the cast-in-place concrete structure; the prefabricated component is equipped with logical groove with cast in situ concrete structure junction one side far away from the outdoor, leads to the inslot to be filled with flexible material.

Preferably, one side of the prefabricated component connected with the cast-in-place concrete structure is provided with a first vertical surface and a second vertical surface, the first vertical surface is close to one outdoor side, the second vertical surface is far away from one outdoor side, the first vertical surface and the second vertical surface are not on the same vertical surface, the first vertical surface and the second vertical surface are in transition through an inverse inclined plane, and a through groove is formed in the second vertical surface.

Compared with the prior art, the utility model has the advantages that:

1. the water seepage and water leakage problems of waterproof connection of the assembled concrete outer wall are effectively solved, through grooves are added on the basis of the traditional vertical waterproof nodes, and reverse inclined planes are formed. If the waterproof material of the decorative layer fails, rainwater invades into the room under the action of strong wind, the wind pressure is greatly reduced when the wind and rain reach the reverse inclined plane, and the reverse inclined plane cannot be broken through basically and invaded into the room again. At the moment, a notch is additionally arranged behind the reverse inclined plane, and is separated by using a flexible material, so that rainwater can hardly break through a second physical defense line.

2. The problem of high maintenance cost in the later period is reduced, and the waterproof effect and the same service life of the building are realized.

Drawings

Fig. 1 is a schematic structural view of a waterproof structure provided in embodiment 1 of the present utility model;

fig. 2 is a schematic view of a cast-in-place waterproof structure according to embodiment 1 of the present utility model;

fig. 3 is a schematic structural view of a waterproof structure according to embodiment 2 of the present utility model;

fig. 4 is a schematic view of a cast-in-place waterproof structure according to embodiment 2 of the present utility model;

fig. 5 is a schematic view of a cast-in-place waterproof structure according to the background art of the present utility model.

In the figure: 1. a prefabricated member; 2. cast-in-place walls or constructional columns; 3. a through groove; 4. an inverse inclined plane; 5. a first vertical surface; 6. a second vertical surface; 7. waterproof paint.

Detailed Description

The construction and principles of the present utility model will be readily apparent to those skilled in the art from the following description taken in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

Referring to fig. 1 and 2, the present embodiment discloses a vertical waterproof structure of a prefabricated outer wall member, and the present embodiment is provided with a first vertical surface near an outdoor side and a second vertical surface near an indoor side at a junction of the prefabricated member and a cast-in-place concrete mechanism.

The first vertical surface and the second vertical surface are connected through the reverse inclined surface close to the outdoor side, and the reverse inclined surface faces the outdoor side, so that the first vertical surface and the second vertical surface are not on the same vertical surface, the first vertical surface is located on one side of the cast-in-place concrete structure of the second vertical surface, wind pressure after wind and rain blows to the building surface is greatly reduced, possibility that wind and rain breaks through the reverse inclined surface and invades indoors is reduced, and watertight performance is improved.

A through groove close to one side of the room is formed in the second vertical surface, flexible material is filled in the through groove to isolate the room, and the waterproof effect is achieved as a second physical defense line.

The joint of the cast-in-place concrete structure and the prefabricated component is close to the outdoor side wall body and is also provided with an alkali-resistant glass fiber grid cloth, the outer side of the grid cloth is coated with waterproof paint 7, and the waterproof performance of the wall surface is improved.

Example 2

Referring to fig. 3 and 4, this embodiment discloses a vertical waterproof structure of a prefabricated outer wall member, on the basis of embodiment 1, the reverse inclined surface of this embodiment is close to the outdoor side and faces the indoor side, the first vertical surface and the second vertical surface are not on the same vertical surface, the first vertical surface is located on the prefabricated structure side of the second vertical surface, and the other structures are the same as those of embodiment 1.

After the utility model is produced, a third party detection mechanism is entrusted, the water tightness of the assembly means of the inner and outer concave rabbets of the prefabricated external concrete wall panels is judged through the on-site spray test of the assembled concrete prefabricated external wall panel inner and outer concave rabbet joints by a standard method (GB/T21086-2007 annex D of building curtain wall and DG/TJ 08-2252-2018 of assembly integral concrete building detection technical standard), and the water tightness of the two connection modes at the limit water pressure and spray time is verified through the water pressure spray under the limit state.

Site spray (formal spray): the spray nozzle (such as B-25, model # 6.030) is adopted, the water pressure at the spray nozzle is 200kPa and 250kPa, the spraying time is 10 minutes, the spray is repeated twice, the two spraying intervals are required to be at least longer than 30 minutes when the external wall panel is completely air-dried.

Limit spraying: a nozzle (such as B-25, model # 6.030) was used, and the ultimate spray water pressure was 250kPa and 300kPa. The spraying time is 10 minutes, the spraying is repeated twice, the external wall panel is required to be completely air-dried at intervals of at least 30 minutes.

And carrying out a water spraying test on the prefabricated external concrete wall panel by a third-party detection mechanism, wherein the water spraying pressure is 200kpa to 235kpa according to the standard D standard of annex D of GB/T21086-2007 building curtain wall, the spraying time is 5 minutes, the water spraying test is beyond the standard range, no leakage occurs at the detected part, and the effectiveness of the vertical waterproof node of the prefabricated external concrete wall panel is further verified.

The above description is only specific to the embodiments of the utility model, but the scope of the utility model is not limited thereto, and any person skilled in the art who is skilled in the art to which the utility model pertains shall apply to the technical solution and the novel concept according to the utility model, and shall all be covered by the scope of the utility model.

Claims

1. The utility model provides a vertical waterproof construction of prefabricated outer wall component, includes cast in situ concrete structure and the prefabricated component of being connected with cast in situ concrete structure, cast in situ concrete structure and prefabricated component junction outside are equipped with waterproof coating, its characterized in that

A reverse inclined plane is arranged at the joint of the prefabricated part and the cast-in-place concrete structure and close to the outdoor side;

and a through groove is formed in one side, far away from the outside, of the junction of the prefabricated part and the cast-in-place concrete structure, and flexible materials are filled in the through groove.

2. The vertical waterproof structure of prefabricated outer wall components according to claim 1, wherein a first vertical surface and a second vertical surface are arranged on one side, connected with the cast-in-place concrete structure, of the prefabricated components, the first vertical surface is close to one outdoor side, the second vertical surface is far away from one outdoor side, the first vertical surface and the second vertical surface are not on the same vertical surface, transition is carried out between the first vertical surface and the second vertical surface through an inverse inclined surface, and a through groove is formed in the second vertical surface.