Waterproof structure for expansion joint of building

Abstract

The waterproof structure for the building expansion joint comprises a waterproof bottom layer, an elastic sealing layer and a waterproof top layer, and the waterproof bottom layer is arranged above a building foundation in the first direction and seals buildings located on the two sides of the expansion joint in the second direction; the elastic sealing layer is laid above the waterproof bottom layer in the expansion joint and comprises fillers and a sealing structure, at least one filler is arranged on the waterproof bottom layer, the sealing structure is formed by curing grouting materials filled in the grouting flow path, and the grouting flow path at least comprises a first gap formed between the fillers and a building; the waterproof top layer is arranged above the expansion joint in the first direction and seals the elastic sealing layer. And under the condition that the buildings located on the two sides of the expansion joint in the second direction generate relative displacement, the elastic sealing layer can generate elastic deformation. The waterproof structure can move or deform along with the building through the elastic sealing layer, and the waterproof function is achieved while the deformation requirement of the expansion joint is met.

Description

Technical Field

[0001] This application belongs to the technical field of waterproof construction, and particularly relates to a waterproof structure for building expansion joints. Background Art

[0002] In the construction field, in order to reduce the damage of structural components caused by the deformation of buildings due to phenomena such as thermal expansion and contraction, expansion joints are usually constructed in buildings to reserve a deformation space. However, the expansion joint structure is prone to varying degrees of damage after long-term use, which in turn leads to leakage, not only affecting the structural safety of the building, but also causing long-term corrosion of structural components and shortening the service life of the building. Utility Model Content

[0003] The embodiment of this application provides a waterproof structure for building expansion joints, which has a simple structure and is easy to construct, and is particularly suitable for repairing building expansion joints that have leaked.

[0004] The embodiment of this application provides a waterproof structure for building expansion joints, including a waterproof bottom layer, an elastic sealing layer, and a waterproof top layer. The waterproof bottom layer is arranged above the building foundation along the first direction and forms a seal for the buildings on both sides of the expansion joint along the second direction; the elastic sealing layer is laid above the waterproof bottom layer in the expansion joint and includes a filler and a sealing structure. At least one filler is arranged on the waterproof bottom layer, and the sealing structure is formed by curing the grouting material filling the grouting flow path. The grouting flow path at least includes a first gap formed between the filler and the building; the waterproof top layer is arranged above the expansion joint along the first direction and forms a closure for the elastic sealing layer; wherein, in the case where the buildings on both sides of the expansion joint along the second direction undergo relative displacement, the elastic sealing layer can undergo elastic deformation.

[0005] In some embodiments, the filler is an elastic deformation member.

[0006] In some embodiments, a plurality of fillers are provided, and the grouting flow path further includes a second gap formed between the plurality of fillers.

[0007] In some embodiments, the plurality of fillers are irregularly arranged along at least one of the third direction, the second direction, and the first direction.

[0008] In some embodiments, the grouting flow path further includes a third gap inherent in the filler, wherein the filler is a porous material member to form the third gap, and / or the filler has a through hole to form the third gap.

[0009] In some embodiments, the sealing structure is an elastic deformation member.

[0010] In some embodiments, the grouting material is a polyurea grouting liquid or a mixture including a polyurea grouting liquid.

[0011] In some embodiments, the waterproof structure for building expansion joints further includes a capping member, which is fixedly connected to the building. The capping member encloses the elastic sealing layer and supports the waterproof top layer, and is provided with a groove recessed towards the expansion joint.

[0012] In some embodiments, the groove runs through the capping member along the third direction.

[0013] In some embodiments, the cross-sectional dimension of the groove gradually decreases in the direction away from the capping member.

[0014] In the waterproof structure for building expansion joints according to the embodiments of the present application, a waterproof bottom layer and a waterproof top layer are respectively provided at the existing expansion joints. It can not only prevent the moisture on the building ground from leaking downward to the expansion joint, but also prevent the moisture in the building foundation from leaking upward to the expansion joint, improving the waterproof effect. An elastic sealing layer is further provided between the waterproof top layer and the waterproof bottom layer. When the building deforms or displaces due to climate influence, the elastic sealing layer can undergo elastic deformation, meeting the deformation requirements of the expansion joint while realizing the waterproof and sealing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the waterproof structure for building expansion joints according to some embodiments of the present application;

[0017] Figure 2 is Figure 1 an enlarged view of part A in the shown waterproof structure.

[0018] Figure 3 is Figure 1 a top view schematic diagram of the capping member for the shown waterproof structure;

[0019] Figure 4a is Figure 3 a cross-sectional schematic diagram of an embodiment of the shown capping member;

[0020] Figure 4b is Figure 3 a cross-sectional schematic diagram of an embodiment of the shown capping member.

[0021] The reference numerals in the specific embodiments are as follows:

[0022] 11. Building; 12. Expansion joint;

[0023] 100, waterproof bottom layer; 210, filler; 220, sealing structure; 300, waterproof top layer; 310, protective part; 400, capping part; 401, groove; 500, counter-camber structure; 510, adhesion layer; 600, protection structure; 610, anti-seepage layer;

[0024] First direction Z; Second direction X; Third direction Y. Detailed implementation manners

[0025] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0028] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0031] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0032] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0033] In the field of building construction, during the long-term use of a building, it may be affected by factors such as climate change and undergo deformation or displacement, which may cause damage to structural components or more serious consequences. To this end, expansion joints are usually constructed in buildings to reserve space for later deformation.

[0034] However, expansion joints are prone to varying degrees of damage after long-term use, which may lead to leakage, affecting the structural safety of the building. Moreover, it will even corrode structural components for a long time and shorten the service life of the building.

[0035] In the related art, for the waterproof construction of expansion joints in existing buildings, sealing is usually achieved by directly grouting into the expansion joints. On the one hand, this process has the defects of slow curing time and long construction period, and is not suitable for the situation where the repair project needs to resume use as soon as possible. On the other hand, the ductility of the grouting material after curing is relatively low, resulting in the loss of part of the deformation ability of the expansion joint and affecting the protection effect of the expansion joint on the building.

[0036] Please refer to Figure 1, To solve the problems of the prior art, an embodiment of the present application provides a waterproof structure for building expansion joints, which includes a waterproof bottom layer 100, an elastic sealing layer, and a waterproof top layer 300. The waterproof bottom layer 100 is disposed above the foundation of the building 11 along the first direction (such as the Z direction in the figure), and both ends of the waterproof bottom layer 100 along the second direction (such as the X direction in the figure) are in contact with the building 11; the elastic sealing layer is disposed in the expansion joint 12 and laid above the waterproof bottom layer 100. The elastic sealing layer includes a filler 210 and a sealing structure 220. At least one filler 210 is disposed on the waterproof bottom layer 100, and the sealing structure 220 is formed by curing the grouting material filling the grouting flow path. The grouting flow path at least includes a first gap formed between the filler 210 and the building 11, and the sealing structure 220 is distributed along the grouting flow path; the waterproof top layer 300 is disposed above the expansion joint 12 along the first direction and forms a closure for the elastic sealing layer. Wherein, in the case of relative displacement of the buildings 11 on both sides of the expansion joint 12 along the second direction, the elastic sealing layer can undergo elastic deformation.

[0037] In the waterproof structure for building expansion joints, the waterproof bottom layer 100 can seal the buildings 11 on both sides of the expansion joint 12 along the second direction, preventing the moisture in the foundation of the building 11 from seeping up into the waterproof structure; the waterproof top layer 300 can be covered above the expansion joint 12 to prevent the moisture on the ground of the building 11 from entering the waterproof structure through the top opening of the expansion joint 12. The elastic sealing layer disposed between the waterproof top layer 300 and the waterproof bottom layer 100 can block the inside of the expansion joint 12, preventing the moisture that has strayed into the waterproof structure from further flowing inside the waterproof structure.

[0038] Thus, the waterproof bottom layer 100 and the waterproof top layer 300 can directly select existing structural components, such as steel lining plates or waterproof coiled materials, reducing the damage to the existing building 11 caused by the construction of the waterproof structure, and at the same time shortening the construction period of the waterproof structure to meet the requirement of quickly resuming use in the repair project.

[0039] Wherein, the elastic sealing layer forms a grouting flow path through the filler 210, and uses the grouting flow path as the distribution position of the sealing structure 220, so that the sealing structure 220 and the filler 210 form a complete elastic sealing layer, and the elastic sealing layer can be in contact with the buildings 11 on both sides of the expansion joint 12 along the second direction. In addition, at least one of the sealing structure 220 and the filler 210 can undergo elastic deformation, so that the overall structure of the elastic sealing layer can undergo elastic deformation.

[0040] Thus, the existence of the filler 210 can reduce the volume ratio of the sealing structure 220 in the elastic sealing layer, reduce the cost investment of the sealing structure 220, and shorten the production period of the sealing structure 220 to control the construction period of the waterproof structure.

[0041] Specifically, the grouting flow path at least includes a first gap formed between the filler 210 and the building 11. The sealing structure 220 is distributed in the first gap and plays an adhesive role between the filler 210 and the building 11, so that the elastic sealing layer and the buildings 11 on both sides of the expansion joint 12 form an integral whole.

[0042] Thus, the elastic sealing layer can elastically deform following the displacement or deformation of the two buildings 11 at the expansion joint 12, so as to reduce the influence of the waterproof structure construction on the deformation performance of the expansion joint 12.

[0043] In some embodiments of the present application, the filler 210 can elastically deform to enable the elastic sealing layer to have the ability of elastic deformation.

[0044] Optionally, the filler 210 includes an elastic deformation structural member.

[0045] Optionally, the overall structure of the filler 210 is an elastic deformation member.

[0046] Optionally, the production material of the filler 210 includes at least one of foamed plastics, rubber, elastic fibers, spring steel wires, silica gel, and sponge, so that the filler 210 has the ability of elastic deformation.

[0047] Thus, when the buildings 11 on both sides of the expansion joint 12 deform or displace, the sealing structure 220 bonded to the building 11 is driven to deform or displace, and then drives the filler 210 to elastically deform, so as to maintain the integral structure of the elastic sealing layer and the building 11 and achieve waterproofing.

[0048] In some embodiments of the present application, a plurality of fillers 210 are provided, and the grouting flow path further includes a second gap formed between the plurality of fillers 210.

[0049] Optionally, the plurality of fillers 210 are regularly arrayed and distributed in the expansion joint 12 to form a plurality of second gaps with consistent forms.

[0050] Thus, the sealing structure 220 can be distributed among the plurality of fillers 210 through the grouting flow path, so that the plurality of fillers 210 are bonded into an integral whole, and this integral whole is bonded and fixed to the building 11 through the sealing structure 220. The plurality of fillers 210 can more quickly respond to the deformation or displacement of the building 11 and elastically deform, improving the reliability of the elastic sealing layer in the expansion joint 12.

[0051] Furthermore, in some embodiments of the present application, the plurality of fillers 210 are irregularly arranged along at least one of a first direction, a second direction, and a third direction (such as the Y direction in the figure).

[0052] Optionally, the orientations of at least two of the plurality of fillers 210 are different.

[0053] That is, one of the two fillers 210 is obtained by rotating the other around at least one of a first direction, a second direction, and a third direction.

[0054] Thereby, the second voids formed between the plurality of fillers 210 have different shapes, making the path of the grouting flow path more diverse, so as to improve the bonding effect of the sealing structure 220 on the plurality of fillers 210 and enhance the integrity of the elastic sealing layer.

[0055] According to some embodiments of the present application, the filler 210 itself has a third void, and the grouting flow path includes this third void.

[0056] Optionally, the filler 210 is a structural member made of a porous material, and the porous material has a third void to accommodate the sealing structure 220.

[0057] Optionally, the porous material is sponge, foam plastic or other materials with a pore structure formed.

[0058] Optionally, the filler 210 has a through-hole, and the through-hole forms a third void to accommodate the sealing structure 220.

[0059] Optionally, the through-hole is arranged to penetrate along the thickness direction of the filler 210 itself.

[0060] Optionally, the through-hole is arranged to penetrate along its third direction.

[0061] Optionally, the through-hole is arranged to penetrate along its thickness direction.

[0062] Thereby, the sealing structure 220 can be distributed in the third void through the grouting flow path, so as to enhance the bonding effect between the sealing structure 220 and the filler 210 and improve the integrity of the elastic sealing layer.

[0063] According to some embodiments of the present application, the sealing structure 220 is formed by curing a grouting material in the grouting flow path, and the sealing structure 220 is an elastic structural member.

[0064] Optionally, the grouting material has ductility after curing, so that the sealing structure 220 can deform following the building 11.

[0065] Optionally, the grouting material is a mixture including a polyurea grouting liquid.

[0066] Optionally, the grouting material is a polyurea grouting liquid.

[0067] Thus, when the buildings 11 on both sides of the expansion joint 12 are deformed or displaced, the sealing structure 220 within the first gap can elastically deform to maintain the connection between the filler 210 and the building 11, enabling the elastic sealing layer to seal the interior of the expansion joint 12.

[0068] According to some other embodiments of the present application, the sealing structure 220 is formed by foaming a grouting material within the grouting flow path. While bonding the filler 210 and the building 11 into a whole, it can adapt to the deformation of the expansion joint 12 caused by the displacement of the building 11.

[0069] Please refer to Figure 2 , according to some embodiments of the present application, the waterproof structure for building expansion joints further includes a capping member 400. The capping member 400 is fixedly connected to the building 11, is disposed above the expansion joint 12 along the first direction, and forms a closure for the elastic sealing layer and bears the waterproof top layer 300.

[0070] Optionally, the capping member 400 is provided with a groove 401. The groove 401 is recessed from the capping member 400 towards the interior of the expansion joint 12. When the buildings 11 on both sides of the expansion joint 12 undergo relative displacement, the groove 401 can adapt to the deformation to maintain the fixed connection between the capping member 400 and the building 11. It can be understood that in some other embodiments, the capping member 400 extends towards the direction away from the expansion joint 12 to form a protrusion to adapt to the deformation of the expansion joint 12.

[0071] Further optionally, please refer to Figure 3 , the groove 401 penetrates through the capping member 400 along the third direction, so that the capping member 400 has the ability to adapt to the expansion or contraction displacement of the expansion joint 12 due to temperature changes throughout the third direction.

[0072] Further optionally, please refer to Figure 4a or Figure 4b , along the direction away from the capping member 400, the cross-sectional dimension of the groove 401 gradually decreases to balance the load brought to the capping member 400 by the relative displacement of the buildings 11 on both sides of the expansion joint 12.

[0073] Exemplarily, please refer to Figure 4a , the cross-section of the groove 401 is arranged in a V shape.

[0074] Exemplarily, please refer to Figure 4b , the cross-section of the groove 401 is arranged in an arc shape, and the angle of the arc is less than 180°.

[0075] Thus, the capping member 400 can form a closure for the expansion joint 12 to prevent external dust, impurities and other components from entering through the entrance of the expansion joint 12 to protect the elastic sealing layer. At the same time, the capping member 400 can level the entrance of the expansion joint 12 to facilitate the construction of the subsequent waterproof top layer 300.

[0076] According to some embodiments of the present application, the waterproof top layer 300 includes a first part located above the expansion joint 12 in a first direction, and second parts located on both sides of the first part in a second direction.

[0077] Optionally, in the second direction, the second parts cover at least a building 11 over a first distance.

[0078] Optionally, the first distance is determined according to the construction scope of the waterproof structure.

[0079] Optionally, the first distance is 500 mm.

[0080] Thus, the waterproof top layer 300 is lapped on the building 11 through the second parts, so that the first part forms a closure for the expansion joint 12 and the elastic sealing layer.

[0081] According to some other embodiments of the present application, the waterproof top layer 300 is formed by curing a waterproof coating, and the waterproof coating covers at least the setting of the capping member 400.

[0082] Optionally, the waterproof structure for building expansion joints further includes a protective member 310, and the protective member 310 covers at least the exposed part of the waterproof top layer 300 to protect the waterproof top layer 300.

[0083] Further optionally, the protective member 310 is a steel liner plate.

[0084] Further optionally, the protective member 310 is a stone slab.

[0085] Please refer to Figure 1 , according to some embodiments of the present application, the waterproof structure for building expansion joints further includes a counter-camber structure 500, and the counter-camber structure 500 is arranged between the building 11 and the waterproof top layer 300 in the first direction.

[0086] Optionally, the top surface of the counter-camber structure 500 is flush with the ground of the building 11.

[0087] Optionally, the top surface of the counter-camber structure 500 is set higher than the ground of the building 11.

[0088] Optionally, in the first direction, an adhesion layer 510 is provided between the counter-camber structure 500 and the building 11, and the counter-camber structure 500 is fixedly connected to the building 11 through the adhesion layer 510.

[0089] Further optionally, the adhesion layer 510 is a roughened surface layer.

[0090] Further optionally, the adhesion layer 510 is a steel mesh.

[0091] Thus, the counter-camber structure 500 can adjust the positional relationship between the waterproof top layer 300 and the ground of the building 11, raise the waterproof top layer 300 so that the waterproof top layer 300 is higher than the ground of the building 11, and prevent the moisture on the ground of the building 11 from entering the interior of the waterproof structure from the top end of the expansion joint 12.

[0092] Please refer to Figure 1 , according to some embodiments of the present application, the waterproof structure further includes an anti-seepage layer 610.

[0093] Along the first direction, the anti-seepage layer 610 is arranged above the building 11, and the anti-seepage layer 610 covers at least the part within the construction scope except the expansion joint 12, so as to reduce the moisture from entering the interior of the building 11 from the part within the construction scope except the expansion joint 12 and affecting the structural safety of the building 11.

[0094] Further, please continue to refer to Figure 1 , according to some embodiments of the present application, the waterproof structure for building expansion joints further includes a protection structure 600, and the protection structure 600 is arranged above the anti-seepage layer 610 along the first direction to extend the service life of the anti-seepage layer 610.

[0095] Optionally, the protection structure 600 is a concrete layer.

[0096] Thus, the influence of the waterproof structure construction on the service function of the existing building 11 is reduced.

[0097] Further optionally, the waterproof top layer 300 extends to cover the counter-camber structure 500 to reduce the moisture entering the expansion joint 12 through the counter-camber structure 500. Specifically, please refer to Figure 1 , along the second direction, there is a waterproof top layer 300 between the counter-camber structure 500 and the protection structure 600.

[0098] Even more optionally, the waterproof top layer 300 extends to cover the anti-seepage layer 610, protecting the anti-seepage layer 610 while reducing the moisture entering the expansion joint 12 through the junction of the protection structure 600 and the building 11, and improving the sealing and waterproof effect of the waterproof structure.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A waterproof structure for building expansion joints, characterized in that Comprising: A waterproof bottom layer, which is arranged above the building foundation along the first direction and seals the buildings located on both sides of the expansion joint along the second direction; An elastic sealing layer, which is laid above the waterproof bottom layer in the expansion joint. The elastic sealing layer includes a filler and a sealing structure. At least one filler is arranged on the waterproof bottom layer. The sealing structure is formed by curing the grouting material filling the grouting flow path. The grouting flow path at least includes a first gap formed between the filler and the building; A waterproof top layer, which is arranged above the expansion joint along the first direction and closes the elastic sealing layer; Wherein, in the case of relative displacement of the buildings located on both sides of the expansion joint along the second direction, the elastic sealing layer can undergo elastic deformation.

2. The waterproof structure for the expansion joint of a building according to claim 1, wherein The filler is an elastic deformation member.

3. The waterproof structure for building expansion joints according to claim 2, characterized in that, A plurality of the fillers are provided, and the grouting flow path further includes a second gap formed between the plurality of fillers.

4. The waterproof structure for building expansion joints according to claim 3, characterized in that, The plurality of fillers are irregularly arranged along at least one of the first direction, the second direction, and the third direction.

5. The waterproof structure for the expansion joint of a building according to claim 2, characterized in that, The grouting flow path further includes a third gap of the filler itself. Wherein, the filler is a porous material member to form the third gap, and / or, the filler has a through hole to form the third gap.

6. The waterproof structure for building expansion joints according to claim 1 or 2, characterized in that The sealing structure is an elastic deformation member.

7. The waterproof structure for building expansion joints according to claim 6, characterized in that, The grouting material is a polyurea grouting liquid or a mixture including a polyurea grouting liquid.

8. The waterproof structure for building expansion joints according to claim 1, characterized in that, The waterproof structure for the building expansion joint further includes a cover member, which is fixedly connected to the building. The cover member closes the elastic sealing layer and supports the waterproof top layer. The cover member is provided with a groove recessed towards the expansion joint.

9. The waterproof structure for building expansion joints according to claim 8, characterized in that, The groove penetrates the cover member along the third direction.

10. The waterproof structure for building expansion joints according to claim 8 or 9, characterized in that, Along the direction away from the cover member, the cross-sectional dimension of the groove gradually decreases.

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