CN217923754U

CN217923754U - Waterproof and drainage system for joints of new and old building structures of underground engineering

Info

Publication number: CN217923754U
Application number: CN202221730991.5U
Authority: CN
Inventors: 黄慧
Original assignee: Zhejiang Gad Co ltd
Current assignee: Zhejiang Gad Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-11-29
Anticipated expiration: 2032-07-05

Abstract

The utility model discloses a prevent drainage system that is used for new and old building structure seam of underground works department, including waterproof structure (1) outside the structure seam that is located secret roof, lie in stagnant water structure (2) between the structure seam of secret roof and along drainage structure (3) of structure seam downwardly extending to secret bottom plate of secret roof. The utility model discloses a multichannel water-proof measures combines together, has waterproof tight, the good characteristics of long term water-proof effects.

Description

Waterproof and drainage system for joints of new and old building structures of underground engineering

Technical Field

The utility model relates to a building water-proof and drainage system, especially the water-proof and drainage system who is used for new and old structure seam department of underground works.

Background

For underground engineering, the problem of leakage at the structural joint at the interface of new and old buildings is troubled by experts and scholars in the engineering world and becomes one of the main diseases of the current underground engineering.

In the existing stage, the waterproof method for the structural joint is generally to scabble the surface of old concrete, arrange the water-swelling water stop strip and integrally cast with new concrete, however, the actual waterproof effect is poor, and the water-swelling water stop strip cannot completely seal the structural joint. The filling materials and the water stop belts are additionally arranged in the structural joints of the new building and the old building, and the fastening piece pressing plates and the rubber water stop belts are arranged on the outer surfaces of the structural joints to prevent water, but the durability of the building has certain defects, and the waterproof effect of the building is reduced to a certain extent along with the lapse of time. Therefore, the existing waterproof structure of the structural joint at the interface of the new building and the old building has the problems of poor waterproof effect or poor durability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterproof and drainage system that is used for new and old building structure seam department of underground works. The utility model discloses a multichannel water-proof measures combines together, has waterproof tight, the good characteristics of long term water-proof effects.

The technical scheme of the utility model: a water-proof and drainage system for the structural joints of new and old buildings in underground engineering is composed of a water-proof structure outside the structural joints of underground top plate, a water-proof structure between the structural joints of underground top plate, and a drainage structure extended downward to underground bottom plate along the structural joints of underground top plate.

In the waterproof and drainage system for the structural joint of the new and old building in the underground engineering, the waterproof structure comprises structural surface expanded concrete covering the structural joint, a waterproof layer is arranged on the outer side of the structural surface expanded concrete, and a water stop belt positioned at the surface layer of the structural joint is arranged between the structural surface expanded concrete and the waterproof layer.

In the waterproof and drainage system for the joints of the old and new building structures in the underground engineering, the waterproof layer comprises the waterproof coating, the waterproof coiled material and the rigid protective layer which are sequentially paved from bottom to top.

In the waterproof and drainage system for the structural joint of the old and new underground engineering, the water-stopping structure comprises the water-stopping strips and the guide pipes, the water-stopping strips are positioned in the structural joint and distributed along the whole length of the structural joint, one end of each guide pipe is communicated with the structural joint, and the other end of each guide pipe extends out of the underground top plate. The guide pipe is used for plugging the structural joint after the structure is finished, a high-pressure grouting method is adopted, a plugging agent is injected into the structural joint through the guide pipe at high pressure, the compactness of the structural joint is further improved, and meanwhile, the guide pipe can be used for water leakage grouting plugging of the structural joint in the subsequent structural service process.

In the waterproof and drainage system for the structural joint of the old building and the new building in the underground engineering, the U-shaped clamping groove is formed in one side of the structural joint of the old building, and the water stop strip is embedded into the U-shaped clamping groove.

In the waterproof and drainage system for the structural joint of the new and old building in the underground engineering, the drainage structure comprises the drainage groove arranged at the bottom of the structural joint of the underground top plate, one side of the drainage groove is connected with the old building, the other side of the drainage groove is connected with the new building, the water outlet end of the drainage groove is connected with the drainage guide pipe, the drainage guide pipe is communicated with the drainage ditch of the underground bottom plate, and the drainage ditch is communicated with the water collecting pit of the underground bottom plate.

In the waterproof and drainage system for the structural joint of the new and old building in the underground engineering, a first groove and a first water dripping line inclining downwards towards the structural joint are arranged on one side, close to the structural joint, of the bottom of the underground top plate of the old building, a second groove and a second water dripping line inclining downwards towards the structural joint are arranged on one side, close to the structural joint, of the bottom of the underground top plate of the new building, and the first groove, the first water dripping line, the second groove and the second water dripping line are all located above the drainage grooves.

Compared with the prior art, the utility model has the advantages that three lines of defense are arranged aiming at the problem of water leakage of the new and old underground structural joints, the first line of defense is a waterproof structure outside the structural joints, so that external water flow is prevented from penetrating into the structural joints, and the external waterproof function of the structural joints is improved; the second defense line is a water stop structure between the structural joints, so that the self compactness of the structural joints is enhanced, and the self waterproof performance of the structural joints is enhanced; the third line of defence is the drainage structure, will pass through the infiltration rivers discharge of two waterproof lines of defence in the front through the drainage structure, and inside the prevention infiltration rivers got into the structure, the inside drainage function of new and old building structure was realized. The invention can effectively improve the waterproof function of the structural joint connecting the new building and the old building, and simultaneously adds a drainage program, thereby finally realizing the complete control of the seepage water flow between the structural joints.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a structural seam of a basement roof;

FIG. 3 is a schematic view of the mounting structure of the water stop strip;

fig. 4 is a schematic view of an anti-sagging construction.

The labels in the figures are: 1. a waterproof construction; 101. structural surface expansive concrete; 102. a water stop; 103. a waterproof layer; 2. a water stop structure; 201. a water stop bar; 202. a conduit; 203. a U-shaped clamping groove; 3. a drainage structure; 301. a drain tank 302, a drain conduit; 303. a drainage ditch; 304. a sump; 4. old buildings; 401. a first groove; 402. a first waterline; 5. building a new building; 501. a second groove; 502. a second drip line.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

The embodiment is as follows:

as shown in fig. 1-4, a drainage preventing system for new and old structural joints of underground engineering, for example, a basement, includes a waterproof structure 1 outside the structural joints of an underground roof, a water stopping structure 2 between the structural joints of the underground roof, and a drainage structure 3 extending downward to an underground floor along the structural joints of the underground roof.

The waterproof structure 1 comprises structural surface expanded concrete 101 covering the structural joint, a waterproof layer 103 is arranged on the outer side of the structural surface expanded concrete 101, and a water stop belt 102 located at the surface layer of the structural joint is arranged between the structural surface expanded concrete 101 and the waterproof layer 103. Before the structural surface expansive concrete 101 is poured, the surface layer concrete at the joint of the old building 5 needs to be chiseled to the reinforcing steel bar position, and then the structural surface expansive concrete 101 is poured to ensure that the structural surface expansive concrete covers the whole structural joint. During construction, the water stop 102 and the structural surface expansive concrete 101 are integrally cast.

The waterproof layer 103 comprises a waterproof coating, a waterproof coiled material and a rigid protective layer which are sequentially paved from bottom to top.

The water stopping structure 2 comprises a water stopping strip 201 and a guide pipe 202, wherein the water stopping strip 201 is located in the middle of the structural joint and distributed along the length of the structural joint, one end of the guide pipe 202 is communicated with the structural joint, and the other end of the guide pipe 202 extends out of an underground top plate. The guide pipes 202 are pre-embedded before concrete pouring, after the structure is completed, a high-pressure grouting method is adopted to inject the plugging agent into the structural joint through the guide pipes 202 at high pressure, so that the compactness of the structural joint is improved, and meanwhile, the guide pipes 202 can be used for water leakage grouting plugging of the structural joint in the subsequent structural service process.

And a U-shaped clamping groove 203 is formed in one side of the structural joint of the old building 4, and the water stop strip 201 is embedded into the U-shaped clamping groove 203. And grouting and plugging are carried out after the water stopping structure 2 is finished so as to strengthen the self compactness of the structural joint and enhance the self waterproof performance of the structural joint.

The waterproof function of the structural joint between the new building 5 and the old building 5 of the underground engineering is realized through the waterproof structure outside the structural joint and the water stop structure between the structural joints.

The drainage structure 3 comprises a drainage groove 301 arranged at the bottom of a structural joint of the underground roof, one side of the drainage groove 301 is connected with the old building 4, the other side of the drainage groove 301 is connected with the new building 5, a drainage conduit 302 is connected with the water outlet end of the drainage groove 301, the drainage conduit 302 is communicated with a drainage ditch 303 of the underground floor, and the drainage ditch is communicated with a water collecting pit 304 of the underground floor. The drainage construction 3 performs a drainage function of a structural joint between the new building 5 and the old building 5.

The bottom of the underground roof of the old building 4 is provided with a first groove 401 and a first water dripping line 402 inclining downwards towards the structural joint direction on one side close to the structural joint, the first water dripping line 402 is positioned between the first groove 401 and the structural joint, the bottom of the underground roof of the new building 5 is provided with a second groove 501 and a second water dripping line 502 inclining downwards towards the structural joint direction on one side close to the structural joint, the second water dripping line 502 is positioned between the second groove 501 and the structural joint, and the first groove 401, the first water dripping line 402, the second groove 501 and the second water dripping line 502 are all positioned above the drainage groove 301. The first groove 401, the first water dropping line 402, the second groove 501 and the second water dropping line 502 constitute a sagging prevention structure for guiding the permeate water flowing into the drain guide 302 through the drain groove 301.

Claims

1. A waterproof and drainage system for joints of new and old building structures of underground engineering is characterized in that: the underground water-saving drainage structure comprises a waterproof structure (1) positioned outside a structural joint of an underground top plate, a water-stopping structure (2) positioned between the structural joints of the underground top plate and a drainage structure (3) extending downwards to an underground bottom plate along the structural joint of the underground top plate.

2. The waterproof and drainage system for the joints of the old and new building structures of underground engineering as claimed in claim 1, wherein: the waterproof structure (1) comprises structural surface expanded concrete (101) covering the structural joint, a waterproof layer (103) is arranged on the outer side of the structural surface expanded concrete (101), and a water stop (102) located at the surface layer of the structural joint is arranged between the structural surface expanded concrete (101) and the waterproof layer (103).

3. The waterproof and drainage system for the joints of the old and new building structures of the underground engineering according to claim 2, wherein: the waterproof layer (103) comprises a waterproof coating, a waterproof coiled material and a rigid protective layer which are sequentially paved from bottom to top.

4. The waterproof and drainage system for the joints of the old and new building structures of the underground engineering according to claim 1, wherein: the water stopping structure (2) comprises a water stopping strip (201) and a guide pipe (202), the water stopping strip (201) is located in the structural seam and distributed along the structural seam in a long mode, one end of the guide pipe (202) is communicated with the structural seam, and the other end of the guide pipe (202) extends out of the underground top plate.

5. The waterproof and drainage system for the joints of the old and new building structures of the underground engineering according to claim 4, wherein: a U-shaped clamping groove (203) is formed in one side, located on the structural joint, of the old building (4), and the water stop strip (201) is embedded into the U-shaped clamping groove (203).

6. The waterproof and drainage system for the joints of the old and new building structures of the underground engineering according to claim 1, wherein: the drainage structure (3) comprises a drainage groove (301) arranged at the bottom of a structural joint of the underground roof, one side of the drainage groove (301) is connected with an old building (4), the other side of the drainage groove (301) is connected with a new building (5), a drainage guide pipe (302) is connected with the water outlet end of the drainage groove (301), the drainage guide pipe (302) is communicated with a drainage ditch (303) of the underground floor, and the drainage ditch is communicated with a water collecting pit (304) of the underground floor.

7. The waterproof and drainage system for the joints of the old and new building structures of the underground engineering according to claim 6, wherein: the bottom of the underground roof of the old building (4) is provided with a first groove (401) and a first water dripping line (402) inclining downwards towards the structural joint direction on the side close to the structural joint, the bottom of the underground roof of the new building (5) is provided with a second groove (501) and a second water dripping line (502) inclining downwards towards the structural joint direction on the side close to the structural joint, and the first groove (401), the first water dripping line (402), the second groove (501) and the second water dripping line (502) are all located above the water drainage groove (301).