Structural joint water stop structure of pervious concrete building

Abstract

The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a structural joint water stop structure of a pervious concrete building. The water stop structure comprises sealant and a U-shaped water stop belt, the U-shaped water stop belt is used for blocking the end, facing water flow, of the structural joint, the sealant is used for filling and blocking the end, back to the water flow, of the structural joint, and the portion, between the sealant and the U-shaped water stop belt, of the structural joint is filled with cement mortar and a foam board. And the cement mortar is wrapped by the foam board. The stability of the water stop structure is guaranteed through cement mortar, the foam board is used for buffering, damage to the water stop structure is avoided, the water stop effect is guaranteed through the U-shaped water stop belt, and effective water stop and building structure safety are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a structural joint water-stopping structure of a water-passing concrete building. Background Art

[0002] At present, water conservancy and hydropower projects generally require reconstruction and expansion due to the need to repair concrete damage to structures and changes in project functions during operation.

[0003] For example, after long-term operation of structures such as water tunnels, spillway chutes, and water diversion culverts, the concrete structures may crack or fall off, requiring large-scale demolition. Changes in structural functions may require demolition of the original structures due to the addition of new structures. In the above construction, there are problems with the treatment of joints between new and old concrete structures. For water-passing structures, especially those with a certain head of water, improper treatment of structural joints will lead to the risk of water seepage, which will accelerate the erosion and damage of the structure and reduce the reasonable service life of the building.

[0004] In the prior art, the conventional treatment measures for structural joints of existing projects are to fill them with flexible materials and apply chemical anti-seepage agents on the surface. However, the water-stopping effect is not ideal in important structures or under the action of large flow rates and a certain water head. At the same time, chemical anti-seepage agents pose a hidden danger to the water diversion safety of water supply projects.

[0005] Therefore, how to ensure effective and reliable water stopping of the joints of the built engineering structures to improve the operational safety of the built structures is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a structural joint water-stopping structure for a water-permeable concrete building, which utilizes cement mortar support to ensure the stability of the water-stopping structure, utilizes foam boards for buffering to avoid damage to the water-stopping structure, and uses U-shaped water-stopping strips and sealants for sealing to ensure the water-stopping effect, effective and reliable water-stopping, and safety of the building structure.

[0007] In response to the above technical problems, the technical solution provided by the utility model is a structural joint water-stopping structure for water-passing concrete buildings, characterized in that it includes a sealant and a U-shaped waterstop strip, the U-shaped waterstop strip is used to seal the end of the structural joint facing the water flow, and the sealant is used to fill and seal the end of the structural joint facing away from the water flow, the structural joint between the sealant and the U-shaped waterstop strip is filled with cement mortar and foam board, and the cement mortar is wrapped by the foam board.

[0008] Furthermore, the U-shaped waterstop includes a U-shaped rubber waterstop and a U-shaped stainless steel waterstop from the inside to the outside, and the U-shaped stainless steel waterstop is fixedly installed on both sides of the structural seam by a stainless steel bolt assembly.

[0009] Furthermore, it also includes an anti-seepage coating layer, which is used to be applied on both sides of the structural joint facing the water flow end.

[0010] Furthermore, a vertically penetrating opening is provided on the foam board, and the cement mortar is filled in the opening.

[0011] Furthermore, the opening is a C-shaped opening facing one of the side walls of the structural seam.

[0012] Furthermore, the outer side surface of the foam board is used to be flush with the end of the structural seam facing the water flow, and the outer side surface of the foam board is provided with an adaptive U-shaped notch corresponding to the U-shaped part of the U-shaped waterstop.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The present application utilizes sealant to seal the joint, ensuring the sealing and water stopping of the end of the structural joint facing away from its joint opening. Cement mortar is arranged in the structural joint, and the rigidity of the cement mortar is utilized to provide strength support for the entire water-stopping structure, ensuring the structural stability of the water-stopping structure under high flow rate and certain water head, avoiding drastic deformation of the water-stopping structure and affecting the water-stopping effect. The foam board can be used as a buffer to avoid hard contact between the cement mortar and the concrete building structure, and between the U-shaped water-stop strip and the cement mortar during use, which may cause damage to the water-stopping structure and ensure the service life of the water-stopping structure. The U-shaped water-stop strip can be used to seal the joint opening of the structural joint, which can prevent water from seeping into the interior of the structural joint from the joint opening of the structural joint, and can adapt to uneven deformation during project operation, avoid structural deformation and pulling damage, and ensure the water-stopping effect. In summary, the water-stopping structure of the utility model can effectively and reliably stop water during long-term use, and can ensure service life and ensure the safe operation of the built structure on the other hand.

[0015] (2) The U-shaped waterstop is a double-layer waterstop, in which the inner layer of the U-shaped rubber waterstop can flexibly solve the gaps caused by the unevenness of the concrete facing the water surface, and at the same time play a buffering role for the rigid concrete and stainless steel bolt components, using double insurance to ensure the water-stopping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of a structural joint water-stopping structure of a water-passing building in Example 1 of the utility model.

[0017] Figure 2 It is a top view schematic diagram of a structural joint water-stopping structure of a water-passing building in Example 1 of the utility model.

[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0019] In the figure: 1. first concrete structure; 11. first water-facing surface; 2. second concrete structure; 21. second water-facing surface; 3. structural joint; 4. U-shaped waterstop; 41. U-shaped rubber waterstop; 42. U-shaped stainless steel waterstop; 43. U-shaped part; 5. sealant; 6. cement mortar; 7. foam board; 8. anti-seepage coating layer; 9. C-shaped opening; 10. stainless steel bolt; 101. stainless steel nut; 102. stainless steel strip; 103. bolt hole; S, water flow. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application: Specific embodiment 1:

[0022] like Figure 1 As shown, the left-right direction is the spacing direction between the first concrete structure 1 and the second concrete structure 2 .

[0023] like Figure 1 , 2 As shown, in this embodiment, the water-passing concrete building includes a first concrete structure 1 and a second concrete structure 2 arranged at intervals in the left-right direction, wherein the sides of the first concrete structure 1 and the second concrete structure 2 facing the water flow S are respectively a first water-facing surface 11 and a second water-facing surface 21. In this embodiment, the first water-facing surface 11 is aligned with the second water-facing surface 21, and the first water-facing surface 11 and the second water-facing surface 21 are flat as a whole without protrusions. A structural seam 3 is formed between the first concrete structure 1 and the second concrete structure 2, and the end of the structural seam 3 facing the water flow S is its seam opening.

[0024] refer to Figures 1 to 3 In the present embodiment, a structural joint water-stopping structure (hereinafter referred to as the water-stopping structure) of a water-passing concrete building of the utility model comprises a sealant 5 and a U-shaped water-stop strip 4, wherein the U-shaped water-stop strip 4 is used to seal one end of the structural joint 3 facing the water flow S, and the U-shaped portion 43 of the U-shaped water-stop strip 4 penetrates into the interior of the structural joint 3, the U-shaped water-stop strip 4 is symmetrically arranged along the structural joint 3 in the left-right direction, and the left and right sides of the U-shaped water-stop strip 4 are respectively fixed on the first water-facing surface 11 and the second water-facing surface 21.

[0025] The sealant 5 is used to fill and seal the end of the structural joint 3 facing away from the water flow S. The structural joint 3 between the sealant 5 and the U-shaped water stop 4 is filled with cement mortar 6 and foam board 7, and the cement mortar 6 is wrapped by the foam board 7.

[0026] In this way, the rigidity of cement mortar 6 can be used to provide strength support for the entire water-stopping structure, ensuring the structural stability of the water-stopping structure under high flow rate and certain water head, avoiding severe deformation of the water-stopping structure and affecting the water-stopping effect. The foam board 7 can be used as a buffer to avoid hard contact between cement mortar 6 and concrete building structure, and between U-shaped water-stop strip 4 and cement mortar 6 during use, thereby preventing damage to the water-stopping structure and ensuring the service life of the water-stopping structure.

[0027] The U-shaped water stop strip 4 can be used to block the opening of the structural seam 3. On the one hand, the water can be stopped outside the water-facing surface to prevent water from penetrating into the interior of the structural seam 3 from the opening of the structural seam 3. On the other hand, it can adapt to the uneven deformation during the operation of the project, avoid structural deformation and pulling damage, and ensure the water-stopping effect. In this way, the water-stopping structure of the present application can effectively and reliably stop water during long-term use, and on the other hand, it can ensure the service life and the safe operation of the built structure.

[0028] Preferably, in this embodiment, Figure 3 As shown, the U-shaped waterstop 4 includes a U-shaped rubber waterstop 41 and a U-shaped stainless steel waterstop 42 from the inside to the outside, and the U-shaped stainless steel waterstop 42 is fixedly installed on both sides of the structural seam 3 by a stainless steel bolt assembly. Of course, in other embodiments, when meeting actual use requirements, the U-shaped waterstop 4 may only include the U-shaped rubber waterstop 41.

[0029] Specifically, Figure 1 , 2 As shown, a plurality of bolt holes 103 are symmetrically provided on the first water-facing surface 11 and the second water-facing surface 21 at positions corresponding to the U-shaped waterstop 4, and the stainless steel bolt assembly includes stainless steel bolts 10 embedded and fixed in the bolt holes 103, and a stainless steel pressure strip 102 is sleeved on each vertical row of stainless steel bolts 10, and the vertical length of the stainless steel pressure strip 102 is adapted to the vertical length of the U-shaped waterstop 4.

[0030] The stainless steel pressure strip 102 is pressed against the U-shaped stainless steel water stop 42 by the stainless steel nut 101 screwed on the stainless steel bolt 10. In this way, while the entire U-shaped water stop 4 is fixed to the water-facing surface of the corresponding side, the inner U-shaped rubber water stop 41 can flexibly solve the gaps caused by the uneven concrete water-facing surface, ensure sealing, and play a buffering role between the rigid concrete and the stainless steel bolt 10 assembly, using double insurance to ensure the water-stopping effect. Of course, in other embodiments, when ensuring actual use requirements, the stainless steel pressure strip 102 can also be a sheet structure that is individually sleeved on each stainless steel bolt 10.

[0031] Preferably, in this embodiment, the first water-facing surface 11 and the second water-facing surface 21 are painted from inside to outside as Figure 3The anti-seepage coating layer 8 is shown, and the anti-seepage coating layer 8 is arranged on the inner side of the U-shaped water stop strip 4, further improving the water-stopping and anti-seepage effect. In this embodiment, the anti-seepage coating layer 8 is SR anti-seepage coating. The specific anti-seepage coating can be selected according to the actual design requirements. It is common knowledge known to those skilled in the art and will not be repeated here.

[0032] Preferably, in this embodiment, Figure 2 As shown, the inner side surface of the foam board 7 facing the sealant 5 is arranged in contact with the sealant 5, and the outer side surface of the foam board 7 facing the U-shaped waterstop strip 4 is flush with the seam opening of the structural seam 3, that is, it is arranged flush with the first water-facing surface 11. The foam board 7 passes through the structural seam 3 as a whole, and a matching U-shaped notch is provided on the foam board 7 corresponding to the U-shaped part 43 of the U-shaped waterstop strip 4. The foam board 7 can be used to buffer the deformation of the U-shaped part 43 to protect the U-shaped waterstop strip 4.

[0033] Preferably, an opening is provided on the foam board 7 that passes through in the vertical direction, and the opening is a C-shaped opening 9 facing one of the side walls of the structural joint 3, and the cement mortar 6 is filled in the U-shaped opening. In the present embodiment, the C-shaped opening 9 is opened toward the first concrete structure 1, so that on the one hand, the cement mortar 6 can be wrapped in the foam board 7, avoiding the cement mortar 6 from being in hard contact with the first concrete structure 1 and the second concrete structure 2 at the same time. At the same time, after the cement mortar 6 is cured, it can be integrated with the first concrete structure 1, keeping the position unchanged and improving stability. Of course, in other embodiments, when meeting actual use requirements, the opening on the foam board 7 can be a "mouth"-shaped opening, in which case the foam board 7 is a cylindrical structure, and the cement mortar 6 is poured inside the cylindrical structure.

[0034] In the present embodiment, the foam board 7 may be a polyethylene foam board 7. Of course, in other embodiments, the foam board 7 may also be other types of foam boards 7 while satisfying the buffering and water-stopping effects.

[0035] In this embodiment, the arrangement process of the water-stop structure is taken as an example of the installation process of the water-stop structure during the repair process of the concrete structure of the built water-filled building, and the specific steps are as follows:

[0036] Step 1: When repairing the concrete structure of a flooded building, first remove the old concrete structure at the repair section and remove the floating dust on the surface of the concrete structure on both sides;

[0037] Step 2: Cast the demolished section concrete structure and wait for the strength to reach the standard, forming a first concrete structure 1 and a second concrete structure 2, and forming a structural joint 3 between the concrete structures on both sides.

[0038] Step 3: Keep the first water-facing surface 11 and the second water-facing surface 21 flat as a whole, and polish the raised parts.

[0039] Step 4: Drill bolt holes 103 on the first water-facing surface 11 and the second water-facing surface 21, and the bolt holes 103 are symmetrically arranged on the left and right sides;

[0040] Step 5: Fill the structural joint 3 with sealant 5, polyethylene foam board 7 and cement mortar 6 according to the design.

[0041] Step 6: Apply an anti-seepage coating layer 8, affix a U-shaped rubber waterstop strip 41, and a U-shaped stainless steel waterstop strip 42 on the first water-facing surface 11 and the second water-facing surface 21 from the inside to the outside respectively.

[0042] Step 7: Install the stainless steel pressure strip 102 and the stainless steel nut 101 at the points, and the implementation is completed.

[0043] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0044] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A structural joint water-stopping structure for a water-filled concrete building, characterized in that: It includes sealant and U-shaped waterstop, the U-shaped waterstop is used to seal the end of the structural joint facing the water flow, the sealant is used to fill and seal the end of the structural joint facing away from the water flow, the structural joint between the sealant and the U-shaped waterstop is filled with cement mortar and foam board, and the cement mortar is wrapped by the foam board.

2. The structural joint water-stopping structure of a water-passing concrete building according to claim 1 is characterized in that: The U-shaped waterstop includes a U-shaped rubber waterstop and a U-shaped stainless steel waterstop from the inside to the outside. The U-shaped stainless steel waterstop is fixedly installed on both sides of the structural joint by a stainless steel bolt assembly.

3. The structural joint water-stopping structure of a water-passing concrete building according to claim 2 is characterized in that: It also includes an anti-seepage coating layer, which is used to be applied on both sides of the structural joint at one end facing the water flow.

4. The structural joint water-stopping structure of a water-passing concrete building according to claim 1 is characterized in that: The foam board is provided with a vertically penetrating opening, and the cement mortar is filled in the opening.

5. The structural joint water-stopping structure of a water-passing concrete building according to claim 4 is characterized in that: The opening is a C-shaped opening facing one side wall of the structural seam.

6. The structural joint water-stopping structure of a water-passing concrete building according to claim 1, characterized in that: The outer side surface of the foam board is used to be flush with the end of the structural joint facing the water flow, and the outer side surface of the foam board is provided with an adaptive U-shaped notch corresponding to the U-shaped part of the U-shaped waterstop.

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