CN221030721U - Antiseep structure for junction of new and old building - Google Patents

Abstract

The utility model discloses an anti-leakage structure at the junction of a new building and an old building, which comprises the anti-leakage structure at the junction of the new building and the old building in the vertical direction, and comprises the following components: a groove body formed on the existing bottom plate and the wall body of the old building; bentonite waterproof slurry filled in the tank body; paving the end head of an old waterproof layer on the existing wall body on bentonite waterproof slurry at the groove body; constructing a newly built bottom plate and a wall body, wherein the newly built wall body is vertically connected with the existing wall body; a new waterproof layer is paved on the outer side surface of the newly built wall body, and the end head of the new waterproof layer is paved on bentonite waterproof slurry at the groove body of the existing wall body; metal strips are arranged at the joint of the new waterproof layer and the old waterproof layer, and the metal strips are pressed on the bentonite waterproof slurry at the groove of the existing wall; and extending the constructed concrete water stop wall along the outer side surfaces of the existing wall body and the newly-built wall body, wherein the concrete water stop wall is vertically connected to the existing wall body and the newly-built wall body. The utility model can improve the waterproof performance of the junction of new and old buildings.

Description

Antiseep structure for junction of new and old building

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to an anti-leakage structure at a junction of a new building and an old building.

Background

In the batch development building engineering, the junction of new and old buildings has the problem of leakage prevention, and the common practice in the field is as follows: the waterproof joint is reserved at the existing old building construction stage of the junction, a protective layer is arranged, the protective layer is broken during new building construction, waterproof engineering construction is carried out, and a water stop steel plate and a rubber water stop strip are arranged. Because the development interval period of the new and old buildings is longer, the reserved waterproof joints can possibly produce ageing, damage and other conditions, meanwhile, the exposed concrete part of the old building is different from the affinity of the concrete aggregate of the new building, and the influence of factors such as shrinkage deformation of the newly poured concrete, settlement of the newly built foundation and the like is added, so that cracks are easy to produce at the concrete joint of the new and old buildings, the water-stopping steel plates and the rubber water-stopping bars can synchronously settle, and the water leakage problem is caused at the junction of the new and old buildings due to the height difference.

Disclosure of utility model

The utility model aims to provide an anti-leakage structure for the junction of a new building and an old building, so as to solve the problem of leakage and water resistance of the junction of the new building and the old building.

In order to solve the technical problems, the utility model provides an anti-leakage structure for a junction of a new building and an old building, which comprises the following components: the anti-leakage structure of the junction of the new building and the old building in the vertical direction comprises:

grooving an existing bottom plate and an existing wall body of an old building to form mutually communicated groove bodies;

bentonite waterproof slurry filled in the tank body;

The end head of an old waterproof layer on the existing wall body of the old building is paved on bentonite waterproof slurry at the groove body;

Constructing a new bottom plate of a new building along the existing bottom plate of an old building and constructing a new wall of the new building in the vertical direction of the existing wall of the old building, wherein the new bottom plate is connected with the existing bottom plate, and the new wall is vertically connected with the existing wall;

a new waterproof layer is paved on the outer side surface of a newly-built wall body, and the end head of the new waterproof layer is paved on bentonite waterproof slurry at the groove body of the existing wall body of an old building;

The metal strips are arranged at the joint of the new waterproof layer and the old waterproof layer, and the metal strips are pressed on the new waterproof layer and the old waterproof layer to be fixedly arranged on bentonite waterproof slurry at the groove of the existing wall;

And (3) extending and constructing a concrete water stop wall along the outer side surfaces of the existing wall body of the old building and the newly-built wall body of the new building, wherein the concrete water stop wall is vertically connected to the existing wall body and the newly-built wall body and covers the new waterproof layer and the old waterproof layer.

Furthermore, according to the anti-leakage structure for the junction of the new building and the old building, the metal strips are pressed into the new waterproof layer and the old waterproof layer through the fixing nails to be fixedly arranged on the bentonite waterproof slurry at the groove body of the existing wall body.

Furthermore, according to the antiseep method for the junction of the new building and the old building, the fixing nails are screws or pins.

Further, the anti-leakage structure at the junction of the new and old building provided by the utility model further comprises an anti-leakage structure at the junction of the new bottom plate of the new and old building and the existing bottom plate in the linear direction, wherein the anti-leakage structure at the junction of the new bottom plate of the new and old building and the existing bottom plate in the linear direction comprises the following components:

The novel grouting device comprises two water-swelling water stop bars and a grouting pipe, wherein the two water-swelling water stop bars and the grouting pipe are arranged on the side wall of the junction of the existing bottom plate of the old building and the newly-built bottom plate of the new building, the two water-swelling water stop bars are respectively arranged at 1/4 part and 3/4 part of the thickness of the side wall, the grouting pipe is arranged at 2/4 part of the thickness of the side wall, a grouting hole is formed in the grouting pipe in a surrounding mode along the length direction of the grouting pipe, a three-way pipe is arranged on the grouting pipe and comprises a connecting end communicated with the grouting pipe and a grouting end perpendicular to the connecting end, and the grouting end extends out of the upper surface of the newly-built bottom plate.

Compared with the prior art, the utility model has the following beneficial effects:

According to the anti-leakage structure for the junction of the new and old building, the anti-leakage structure for the junction of the new and old building is formed by the groove body on the existing wall body, the bentonite waterproof slurry filled in the groove body, the new and old waterproof layers paved on the bentonite waterproof slurry, the metal strips pressed on the new and old waterproof layers and fixedly arranged on the bentonite waterproof slurry, and the concrete water stop wall vertically connected on the existing wall body and the newly built wall body, the new and old waterproof layers are pressed and sealed on the bentonite waterproof slurry through the metal strips, the defect that the new and old waterproof layers of the new and old building cannot be closed can be effectively overcome through the functional characteristics of high expansibility, low permeability and self-healing repair cracks of the bentonite waterproof slurry, and the dense and continuous gel waterproof layers can be formed in the groove body by effectively filling up gaps of the lap joints, nail holes and concrete in the bentonite waterproof slurry, so that leakage of the new and old waterproof layers is prevented at the junction; the waterproof wall has the advantages that the anti-seepage problem of the new waterproof layer at the joint can be further improved through shielding of the joint of the new waterproof layer and the old waterproof layer by the concrete water wall, the concrete water wall is respectively connected with the existing wall and the new wall, so that the concrete water stop wall can block water leakage of the outer side face of the new wall and the existing wall to form a water stop barrier, the water leakage is prevented from directly impacting the corner of the new wall and the existing wall, and the waterproof capability of the outer side face of the new wall and the existing wall is improved.

Drawings

FIGS. 1 to 2 are schematic plan view of a leakage-proof structure at the junction of a new building and an old building in the vertical direction;

FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 1;

FIG. 4 is a schematic diagram of a side perspective structure of a leakage-proof structure at the junction of a newly built base plate of a new or old building and an existing base plate in a straight line direction;

FIG. 5 is a schematic cross-sectional view of the structure at B-B in FIG. 4;

the figure shows:

100. An antiseep structure at the junction of new and old buildings;

110. Old building, 111, existing bottom plate, 112, existing wall, 113, old waterproof layer;

120. new building, 121, new bottom plate, 122, new wall, 123, old waterproof layer;

130. The anti-seepage structure of the junction of the new building and the old building in the vertical direction comprises 131, a tank body, 132, bentonite waterproof slurry, 133, metal strips, 134 and a concrete water-stop wall;

140. A foundation pit edge;

150. The new bottom plate of the new and old building and the existing bottom plate are in an anti-leakage structure at the junction of the straight line direction, and the anti-leakage structure comprises 151, water-swelling water stop bars, 152, grouting pipes, 153 and a three-way pipe.

Detailed Description

The utility model is described in detail below with reference to the attached drawing figures: the advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

Example 1

Referring to fig. 1 to 5, a first embodiment of the present utility model provides a method for preventing leakage at a junction of a new building and an old building, including a method for preventing leakage at a junction of a new building and an old building in a vertical direction, wherein the method for preventing leakage at a junction of a new building and an old building in a vertical direction may include the following steps:

In step 201, referring to fig. 1 and 3, the existing bottom plate 111 and the existing wall 112 of the old building 110 are grooved to form mutually penetrating grooves 131. The grooving size may be 50×20mm (width×depth), and the grooving position may be not less than 250mm from the outer side of the newly built wall 122.

In step 202, please refer to fig. 1 and 3, the bentonite waterproof slurry 132 is filled in the tank 131. To enhance the filling effect, the bentonite waterproof slurry 132 may be densely filled in the tank 131.

In step 203, please refer to fig. 1 and 3, the end of the old waterproof layer 113 on the existing wall 112 of the old building 110 is laid on the bentonite waterproof slurry 132 at the tank 131. I.e. the old waterproof layer 113 is collected at the bentonite waterproof slurry 132 in the tank body 131.

In step 204, referring to fig. 1, 2 and 5, the new floor 121 of the new building 120 is constructed along the existing floor 111 of the old building 110 and the new wall 122 of the new building 120 is constructed in the vertical direction of the existing wall 112 of the old building 110, the new floor 121 is connected with the existing floor 111, and the new wall 122 is vertically connected with the existing wall 112. In this step, the newly built bottom plate 121 in fig. 1 to 2 is covered by the newly built wall 122.

In step 205, please refer to fig. 1, a new waterproof layer 123 is laid on the outer side of the new wall 122 of the new building 120 and extends onto the bentonite waterproof slurry 132 at the trough 131 of the existing wall 112 of the old building 110. I.e. the new waterproof layer 123 is collected at the bentonite waterproof slurry 132 in the tank body 131. Wherein the new waterproof layer and the old waterproof layer can be waterproof coiled materials.

In step 206, referring to fig. 1 to 2, the metal strip 133 is used to press-seal the waterproof layer 113 of the new and old building 110 onto the waterproof slurry 132 of bentonite at the trough 131 of the existing wall 112. Wherein the new waterproof layer 123 and the old waterproof layer 113 can be pressed and embedded in the groove 131 of the existing wall 112 by the metal strips 133, so as to improve the sealing and combining effects of the new waterproof layer and the old waterproof layer, and avoid gaps. The metal strip 133 in fig. 1 is not embedded in the groove 131, and the metal strip 133 in fig. 2 is embedded in the groove.

In step 207, referring to fig. 2, the concrete water stop wall 134 is constructed along the outer side of the existing wall 112 of the old building 110 and the new wall 122 of the new building 120, such that the concrete water stop wall 134 is vertically connected to the existing wall 112 and the new wall 122 and covers the new and old waterproof layers 113. For example, concrete retaining wall 134 may extend 2 meters each along the outside of existing wall 112 and the outside of newly built wall 122 to form a rectangular wall with a cross-section of 4 square meters.

Referring to fig. 1 to 3, a new and old building junction anti-leakage structure 100 according to a first embodiment of the present utility model further includes: a new and old building vertical direction juncture antiseep construction 130, the new and old building vertical direction juncture antiseep construction 130 comprising: grooving the existing bottom plate 111 and the existing wall 112 of the old building 110 to form mutually communicated groove bodies 131; a bentonite waterproof slurry 132 filled in the tank 131; the end of the old waterproof layer 113 on the existing wall 112 of the old building 110 is paved on the bentonite waterproof slurry 132 at the groove 131; constructing a new bottom plate 121 of a new building 120 along an existing bottom plate 111 of an old building 110 and constructing a new wall 122 of the new building 120 in a vertical direction of an existing wall 112 of the old building 110, wherein the new bottom plate 121 is connected with the existing bottom plate 111, and the new wall 122 is vertically connected with the existing wall 112; a new waterproof layer 123 laid on the outer side surface of the new wall 122 of the new building 120, the new waterproof layer 123 being disposed on the bentonite waterproof slurry 132 at the trough 131 of the existing wall 112 of the old building 110; a metal strip 133 is arranged at the joint of the new waterproof layer 113 and the old waterproof layer 113, the metal strip 133 presses the new waterproof layer 113 and the old waterproof layer 113 to be fixedly arranged on the bentonite waterproof slurry 132 at the groove 131 of the existing wall 112; a concrete water stop wall 134 is constructed along the outer side of the existing wall 112 of the old building 110 and the outer side of the new wall 122 of the new building 120, and the concrete water stop wall 134 is vertically connected to the existing wall 112 and the new wall 122 and covers the new and old waterproof layers 113.

Referring to fig. 1 to 2, in the anti-leakage method and structure for junction of new and old building provided in the first embodiment of the present utility model, the groove 131 on the existing wall 112 and the bentonite waterproof slurry 132 filled therein, the new and old waterproof layers 113 laid on the bentonite waterproof slurry 132, the metal strip 133 pressed on the new and old waterproof layers 113 and fixedly arranged on the bentonite waterproof slurry 132, and the concrete water-stop wall 134 vertically connected on the existing wall 112 and the newly built wall 122 form the anti-leakage structure 130 for junction of new and old building, the new and old waterproof layers 113 are pressed and sealed on the bentonite waterproof slurry 132 through the metal strip 133, and the defect that the new and old waterproof layers 113 of the new and old building 110 cannot be closed can be effectively solved through the high expansibility, low permeability and self-healing repairing crack function characteristics of the bentonite waterproof slurry 132, and the tight and continuous gel waterproof layers can be effectively filled in the lap joint, nail hole and the pore of the concrete in the groove 131 so as to prevent the new and old waterproof layers 113 from leaking at the junction; the anti-seepage problem of the new waterproof layer 113 at the joint can be further improved through shielding the joint of the new waterproof layer 113 and the old waterproof layer 113 by the concrete water wall, and the concrete water wall is respectively connected with the existing wall 112 and the new wall 122, so that the concrete water stop wall 134 can block the water leakage of the outer side surface of the new wall 122 and the existing wall 112 to form a water stop barrier, the water leakage is prevented from directly impacting the corner of the new wall 122 and the existing wall 112, and the waterproof capability of the outer side surface of the new wall 122 and the existing wall 112 is improved.

Referring to fig. 1 to 2, in the antiseep method and structure for junction of new and old buildings according to the first embodiment of the present utility model, when the shrinkage deformation of the newly poured concrete of the new building 120, the settlement of the foundation of the new building 120, etc. are affected, the crack and settlement are generated at the junction of the concrete of the new and old building 110, after the bentonite waterproof slurry 132 swells with water, the height difference generated by the crack and settlement can be filled, so as to improve the waterproof performance of the crack and settlement.

Referring to fig. 1 to 2, in the method and structure for preventing leakage at the junction between a new building and an old building according to the first embodiment of the present utility model, a groove 131 is formed on an existing base plate 111 by grooving, so as to avoid the problem of water leakage caused by different elevation at the bottom of a new waterproof layer 113 due to the difference between the existing base plate 111 and a newly built base plate 121 for subsequent construction. The groove 131 formed on the existing wall 112 provides necessary space for filling the bentonite waterproof slurry 132 and collecting the new waterproof layer and the old waterproof layer, and improves the sealing effect of the joint of the new waterproof layer and the old waterproof layer.

Referring to fig. 1, in order to improve the waterproof effect of the old waterproof layer 113 on the existing wall, according to the method and structure for preventing leakage at the junction of the new and old buildings provided in the first embodiment of the present utility model, when the old waterproof layer 113 on the existing wall 112 of the old building 110 is damaged or aged, the old waterproof layer 113 is laid again.

In order to improve the fixing effect on the new waterproof layer and the old waterproof layer, the anti-leakage method and structure for the junction of the new and the old buildings provided by the first embodiment of the utility model are to fix the metal strip 133 on the bentonite waterproof slurry 132 at the groove 131 by using the fixing nails such as screws and pins.

Referring to fig. 2, in order to improve the water-stopping effect, in the method and structure for preventing leakage at the junction of new and old buildings according to the first embodiment of the present utility model, the casting material of the concrete water-stopping wall 134 is C15 plain concrete with a seepage-resistant grade P8, and is mixed with 0.9kg/m ³ polypropylene fiber, and is mixed with 12% concrete expansion agent.

Example two

Referring to fig. 1 to 5, in order to improve the waterproof effect of the junction between the newly-built bottom plate 121 and the existing bottom plate 111 in the linear direction, a second embodiment of the present utility model provides a new and old building junction anti-leakage method, which is improved on the basis of the first embodiment, and further includes a new-built bottom plate 121 of the new and old building 110 and the existing bottom plate 111 in the linear direction junction anti-leakage method, wherein the new-built bottom plate 121 of the new and old building 110 and the existing bottom plate 111 in the linear direction junction anti-leakage method may include:

step 301, roughening the side walls of the existing floor 111 of the old building 110.

In step 302, two water-swelling water stop strips 151 are arranged on the side wall of the existing bottom plate 111, and the two water-swelling water stop strips 151 are respectively arranged at 1/4 and 3/4 of the thickness of the existing bottom plate 111.

In step 303, a grouting pipe 152 is pre-buried in the center of the side wall of the existing bottom plate 111, a grouting hole is circumferentially formed in the grouting pipe 152 along the length direction of the grouting pipe, a tee pipe 153 is installed on the grouting pipe 152, and the tee pipe 153 comprises a connection end communicated with the grouting pipe 152 and a grouting end perpendicular to the connection end.

Step 304, constructing a new bottom plate 121 of the new building 120 along the linear direction of the existing bottom plate 111, connecting the new bottom plate 121 with the existing bottom plate 111, and distributing the two water-swelling water stop strips 151 and the grouting pipes 152 at the junction of the new bottom plate 121 and the existing bottom plate 111. Wherein the grouting end of the tee 153 extends out of the upper surface of the newly-built bottom plate 121.

The second embodiment of the present utility model further provides an anti-leakage structure 100 at a junction between a new floor 121 and an existing floor 111 of a new and old building 110, and further includes an anti-leakage structure 150 at a junction between the new floor 121 and the existing floor 111 of the new and old building 110 in a linear direction, where the anti-leakage structure 150 at the junction between the new floor 121 and the existing floor 111 in the linear direction includes:

The novel building comprises two water-swelling water stop bars 151 and a grouting pipe 152, wherein the two water-swelling water stop bars 151 and the grouting pipe 152 are arranged on the side wall of the junction between the existing bottom plate 111 of the old building 110 and the newly-built bottom plate 121 of the new building 120, the two water-swelling water stop bars 151 are respectively arranged at 1/4 and 3/4 of the thickness of the side wall, the grouting pipe 152 is arranged at 2/4 of the thickness of the side wall, a grouting hole is circumferentially arranged on the grouting pipe 152 along the length direction of the grouting pipe, a three-way pipe 153 is arranged on the grouting pipe 152, and the three-way pipe 153 comprises a connecting end communicated with the grouting pipe 152 and a grouting end perpendicular to the connecting end, and the grouting end extends out of the upper surface of the newly-built bottom plate 121. Wherein the grouting end can be higher than the newly built bottom plate by about 200 mm.

According to the anti-leakage structure 100 at the junction of the new building and the old building provided by the second embodiment of the utility model, the waterproof capability of the junction of the newly built bottom plate 121 and the existing bottom plate 111 can be improved through the two water-swelling water stop bars 151, and the risk of leakage of underground water is reduced. The pre-buried grouting pipe 152 provides convenience for grouting and plugging in the corresponding later-stage water leakage section, and the grouting pipe 152 can be subjected to low-pressure grouting through the three-way pipe 153, so that the harm of high-pressure grouting to concrete is effectively reduced, and the grouting cost is reduced. The grouting pipes 152 may be arranged in a 5-meter section, and two adjacent sections of grouting pipes 152 may overlap by 200mm. The grouting pipe 152 may have a diameter of 20mm. The grouting end of the tee 153 is higher than the elevation of the newly-built bottom plate 121, so that grouting operation is facilitated. After grouting the grouting pipe 152, the slurry in the grouting pipe 152 overflows from the slurry outlet holes and diffuses to capillary holes in the concrete, and leakage is blocked at the leakage position.

Example III

The antiseep method and structure at the junction of the new and old building provided in the third embodiment of the present utility model may further include a antiseep method and structure at the junction of the existing wall 112 in the straight line direction of the newly-built wall 122 of the new and old building 110, and may include:

step 401, roughening the side wall of the existing wall 112 of the old building 110.

In step 402, two water-swelling water stop strips 151 are arranged on the side wall of the existing wall 112, and the two water-swelling water stop strips 151 are respectively arranged at 1/4 and 3/4 of the thickness of the existing wall 112.

In step 403, a grouting pipe 152 is pre-buried in the center of the side wall of the existing wall 112, the grouting pipe 152 is circumferentially provided with a grouting hole along the length direction thereof, a tee pipe 153 is installed on the grouting pipe 152, and the tee pipe 153 comprises a connection end communicated with the grouting pipe 152 and a grouting end perpendicular to the connection end.

Step 404, constructing the new wall 112 of the new building 120 along the linear direction of the existing wall 112, connecting the new wall 112 with the existing wall 112, and distributing the two water-swelling water stop bars 151 and the grouting pipes 152 at the junction of the new wall 112 and the existing wall 112. Wherein the grouting end of the tee 153 extends out of the end of the newly-built wall 112.

The third embodiment has the same effect as the second embodiment.

The present utility model is not limited to the above-described embodiments, but rather, the above-described embodiments are merely examples of some, but not all embodiments of the present utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model. Other levels of modification and variation to the present utility model may occur to those skilled in the art. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims.

Claims (4)

1. A new and old building juncture antiseep structure, characterized by comprising: the anti-leakage structure of the junction of the new building and the old building in the vertical direction comprises:

grooving an existing bottom plate and an existing wall body of an old building to form mutually communicated groove bodies;

bentonite waterproof slurry filled in the tank body;

The end head of an old waterproof layer on the existing wall body of the old building is paved on bentonite waterproof slurry at the groove body;

Constructing a new bottom plate of a new building along the existing bottom plate of an old building and constructing a new wall of the new building in the vertical direction of the existing wall of the old building, wherein the new bottom plate is connected with the existing bottom plate, and the new wall is vertically connected with the existing wall;

a new waterproof layer is paved on the outer side surface of a newly-built wall body, and the end head of the new waterproof layer is paved on bentonite waterproof slurry at the groove body of the existing wall body of an old building;

The metal strips are arranged at the joint of the new waterproof layer and the old waterproof layer, and the metal strips are pressed on the new waterproof layer and the old waterproof layer to be fixedly arranged on bentonite waterproof slurry at the groove of the existing wall;

And (3) extending and constructing a concrete water stop wall along the outer side surfaces of the existing wall body of the old building and the newly-built wall body of the new building, wherein the concrete water stop wall is vertically connected to the existing wall body and the newly-built wall body and covers the new waterproof layer and the old waterproof layer.

2. The leakage preventing construction for junction of old and new building according to claim 1, wherein the metal strip is pressed on the waterproof layer of the old and new building by the fixing nails to fix the waterproof slurry of bentonite at the groove of the existing wall.

3. The construction of claim 2, wherein the fastener is a screw or pin.

4. The new and old building junction antiseep construction according to claim 1, further comprising a new floor panel and an existing floor panel of the new and old building junction antiseep construction in a straight line direction, the new floor panel and the existing floor panel junction antiseep construction of the new and old building comprising:

The novel grouting device comprises two water-swelling water stop bars and a grouting pipe, wherein the two water-swelling water stop bars and the grouting pipe are arranged on the side wall of the junction of the existing bottom plate of the old building and the newly-built bottom plate of the new building, the two water-swelling water stop bars are respectively arranged at 1/4 part and 3/4 part of the thickness of the side wall, the grouting pipe is arranged at 2/4 part of the thickness of the side wall, a grouting hole is formed in the grouting pipe in a surrounding mode along the length direction of the grouting pipe, a three-way pipe is arranged on the grouting pipe and comprises a connecting end communicated with the grouting pipe and a grouting end perpendicular to the connecting end, and the grouting end extends out of the upper surface of the newly-built bottom plate.