Basement outer wall induction joint structure and construction method thereof
By setting up multiple waterproofing measures and steel bar connections at the induction joints of the basement exterior wall, the leakage and irregular cracks of the ultra-long seamless basement structure are solved, the waterproof performance is improved and construction complexity and cost are reduced.
Patent Information
- Application Number
- CN202510681361.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2025-07-29
AI Technical Summary
The exterior wall leakage of existing ultra-long seamless basement structures is common and the cracks are irregular. The later waterproofing and leak prevention work is large and the cost is high.
The outer water stop, inner water stop, caulking plate and water connection tank are installed at the induction joints of the basement exterior wall, and connected to the wall reinforcement through reinforcement steel bars, combining crack-resistant fibers and sealing paste to form multiple waterproof layers to resist the shrinkage deformation stress of concrete.
It effectively improves the waterproof performance of the basement exterior wall, simplifies the construction process, reduces the impact of cracks on the strength of concrete structures, and reduces the risk of leakage.
Smart Images
Figure CN120384550A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of building construction, and particularly relates to an induced joint structure for the basement exterior wall and a construction method thereof. Background Art
[0002] With the development of the economy, large-scale group buildings are increasing day by day, the length of the underground structure walls is continuously increasing, and the cracking and leakage of the basement exterior walls are relatively common. Due to the limitations of the basement's use function and to avoid structural leakage, expansion joints are usually not provided, and measures such as optimizing the reinforcement or concrete mix ratio, setting post-cast strips, strengthening strips, adding fibers to the concrete, increasing and densifying the reinforcement are adopted to control the wall cracks, thus forming an extra-long seamless basement structure. However, even with this, the problem of wall cracking has not been completely solved. Due to various reasons, the leakage of such basement exterior walls is very common, and the cracks are irregularly distributed, resulting in a large amount of work and high cost for later waterproofing and plugging. Summary of the Invention
[0003] To overcome the defects existing in the prior art, the present invention provides an induced joint structure for the basement exterior wall and a construction method thereof to solve the problems of common leakage of the exterior walls of the existing extra-long seamless basement structures and irregular crack distribution.
[0004] To achieve the above object, an induced joint structure for the basement exterior wall is provided, including:
[0005] An external water stop belt, the basement exterior wall is cast on the inner side of the retaining structure, and the external water stop belt is laid at the side joint of the induced joint of the basement exterior wall facing the retaining structure;
[0006] An internal water stop belt, which is arranged in the middle of the induced joint, and reinforcing layer steel bars are arranged on the opposite sides of the internal water stop belt. The opposite sides of the reinforcing layer steel bars are embedded in the basement exterior walls on the opposite sides of the induced joint, and anti-cracking fibers are incorporated into the concrete of the basement exterior walls on the opposite sides of the induced joint;
[0007] A caulking board, the caulking boards are respectively embedded on the opposite sides of the induced joint, the two caulking boards are respectively arranged on the opposite sides of the internal water stop belt, and the wall steel bars on the inner and outer sides of the basement exterior wall are cut off at the induced joint and then bent inward and connected to the reinforcing layer steel bars;
[0008] A water receiving trough, which covers the outside of the other side joint of the induced joint away from the retaining structure, and a sealing paste is filled in the other side joint of the induced joint.
[0009] Further, a waterproof coiled material is laid on one side of the enclosure structure facing the basement exterior wall, a waterproof strengthening layer is laid on one side of the waterproof coiled material facing the basement exterior wall, and the position of the waterproof strengthening layer corresponds to the position of the induced joint.
[0010] Further, the external waterstop is a back-mounted waterstop.
[0011] Further, the internal waterstop is a steel-edge rubber waterstop.
[0012] Further, a receiving groove is formed on the side surface of the caulking board facing the joint wall of the induced joint, and a water-swellable waterstop rubber is filled in the receiving groove.
[0013] Further, two receiving grooves are arranged on each side surface of the caulking board, a grouting pipe is buried in the basement exterior wall, and one end of the grouting pipe extends into the induced joint and is arranged between the two receiving grooves.
[0014] The present invention provides a construction method for the induced joint structure of the basement exterior wall, including the following steps:
[0015] Lay the external waterstop on the inner side of the enclosure structure so that the position of the external waterstop corresponds to the position of the induced joint of the basement exterior wall;
[0016] Bind the steel bars of the basement exterior wall, and arrange strengthening layer steel bars at the induced joint of the basement exterior wall, so that the steel bars on the inner and outer side walls of the basement exterior wall are cut off at the induced joint and bent inward and connected to the strengthening layer steel bars;
[0017] Arrange the internal waterstop in the middle of the induced joint so that the internal waterstop is arranged between the two strengthening layer steel bars;
[0018] Caulking boards are respectively embedded on the opposite sides of the induced joint, and the two caulking boards are respectively arranged on the opposite sides of the internal waterstop;
[0019] Pour the concrete of the basement exterior wall, and add anti-cracking fibers to the concrete of the basement exterior wall on the opposite sides of the induced joint;
[0020] Fill a sealing paste in the other side seam of the induced joint;
[0021] Cover a water receiving trough outside the other side seam of the induced joint far from the enclosure structure.
[0022] The beneficial effects of the present invention are as follows. For the induced joint structure of the basement exterior wall of the present invention, waterstops are respectively arranged on the outer side and the middle part of the basement exterior wall. Through multiple waterproof measures, the waterproof performance of the basement exterior wall is enhanced. At the same time, the steel bar structure of the basement exterior wall is integrally connected with the steel bars of the strengthening layer, effectively resisting the shrinkage deformation stress of the concrete. By externally arranging an induced joint to form a pre-cracked part, the middle part of the basement exterior wall is pulled. Meanwhile, multiple waterproof layers are added, the operation is simple and easy, and the popularization is strong, which can effectively reduce the influence of cracks on the strength of the concrete structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:
[0024] Figure 1 It is a schematic structural diagram of the induced joint structure of the basement exterior wall of the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The following further describes the present application in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.
[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.
[0027] Referring to Figure 1 As shown, the present invention provides an induced joint structure for a basement exterior wall, including: an outer waterstop 1, an inner waterstop 2, a caulking plate 3, and a water receiving groove 4.
[0028] In this embodiment, the basement exterior wall is poured on the inner side of the retaining structure 6. The retaining structure 6 is a diaphragm wall. The outer waterstop 1 is laid at the side seam opening of the induced joint of the basement exterior wall facing the retaining structure 6.
[0029] As a preferred embodiment, a waterproof coiled material 61 is laid on the side of the retaining structure 6 facing the basement exterior wall. A waterproof strengthening layer is laid on the side of the waterproof coiled material 61 facing the basement exterior wall. The position of the waterproof strengthening layer corresponds to the position of the induced joint.
[0030] In this embodiment, a leveling layer 62 is poured on the inner side of the retaining structure 6, and the waterproof coiled material 61 is laid on the leveling layer 62. The outer waterstop 1 is arranged on the side of the waterproof strengthening layer away from the waterproof coiled material 61.
[0031] The internal water stop 2 is arranged in the middle of the induced joint. Reinforcing layer steel bars 8 are arranged on the opposite sides of the internal water stop 2. The opposite sides of the reinforcing layer steel bars 8 are embedded in the external basement walls on the opposite sides of the induced joint.
[0032] As a preferred embodiment, the external water stop 1 is a back-mounted water stop. Rigid self-adhesive layers are arranged on both sides of the back-mounted water stop, which can ensure the effective connection between the back-mounted water stop and the concrete external wall.
[0033] As a preferred embodiment, the internal water stop 2 is a steel-edge rubber water stop. The middle part of the steel-edge rubber water stop is a hollow pipe structure, which can maintain effective deformation when the concrete on both sides moves, avoid being torn, form a closed waterproof line, and at the same time, triangular columns and steel plates are provided at both ends, which can not only ensure the effective connection with the concrete wall, but also prevent water from seeping in through the gap.
[0034] Anti-cracking fibers are incorporated into the concrete of the external basement walls on the opposite sides of the induced joint.
[0035] During the process of pouring the concrete of the external basement wall, polypropylene anti-cracking fibers are incorporated into the concrete inside the two sides of the induced joint to achieve the effect of combining rigidity and flexibility, thereby reducing and controlling the development of cracks on the wall surface of the external basement wall and restricting the range of cracking and deformation.
[0036] Caulking plates 3 are respectively embedded on the opposite sides of the induced joint. The two caulking plates 3 are respectively arranged on the opposite sides of the internal water stop 2. The wall reinforcement on the inner and outer sides of the external basement wall is cut off at the induced joint and then bent inward and connected to the reinforcing layer steel bars 8.
[0037] In this embodiment, reinforcing layer steel bars 8 are arranged in the middle of the wall of the external basement wall. Reinforcing structures 7 are arranged on the opposite sides of the wall of the external basement wall. The reinforcing layer steel bars 8 and the reinforcing structures are steel mesh sheets.
[0038] The steel bar spacing specifications of the two rows of two-meter-long reinforcing layer steel bars 8 are the same as those of the reinforcing structure of the external basement wall. Near the induced joint of the reinforcing structure of the external basement wall, the horizontal bars of the reinforcing structures of the two external basement walls on the inside and outside are bent into the wall by one-third, and at the same time, they are anchored and connected to the middle reinforcing layer steel bars 8. The reinforcing structure of the external basement wall is connected with the reinforcing layer steel bars 8 as a whole, which can effectively resist the concrete shrinkage deformation stress. By setting an induced joint externally, a pre-cracked part is formed. The middle part of the external basement wall is under tension, and at the same time, multiple waterproof layers are added. The operation is simple and easy, and the popularization is strong, which can effectively reduce the influence of cracks on the strength of the concrete structure.
[0039] The water receiving groove 4 covers the outside of the other side seam opening of the induced joint far away from the enclosure structure 6. The other side seam opening of the induced joint is filled with a sealing paste 5.
[0040] As a preferred embodiment, the sealing paste 5 is a two-component polysulfide sealing paste 5. After the caulking board 3 is arranged at the end of the indoor area close to the induced joint, the two-component polysulfide sealing paste 5 is used for closing, which can not only play a waterproof role, but also ensure that it will not be damaged during the deformation of the concrete due to its flexible material.
[0041] As a preferred embodiment, a receiving groove is formed on the side surface of the caulking board 3 facing the joint wall of the induced joint. The receiving groove is filled with water-swellable waterstop rubber.
[0042] In this embodiment, two receiving grooves are arranged on each side surface of the caulking board 3. A grouting pipe 9 is buried in the basement exterior wall. One end of the grouting pipe 9 extends into the induced joint and is arranged between the two receiving grooves.
[0043] As a preferred embodiment, the caulking board 3 is a PE foam board. Two grooves are arranged on the upper part of the PE foam board, and water-swellable waterstop rubber is embedded inside the grooves. The grouting pipe 9 is arranged between the two water-swellable waterstop rubbers to play a bottom-supporting role.
[0044] The present invention provides a construction method for the structure of the induced joint of the basement exterior wall, including the following steps:
[0045] S1. Lay the outer waterstop 1 on the inner side of the retaining structure 6 so that the position of the outer waterstop 1 corresponds to the position of the induced joint of the basement exterior wall.
[0046] S2. Bind the steel bars of the basement exterior wall, and set the strengthening layer steel bars 8 at the induced joint of the basement exterior wall, so that the wall steel bars on both the inner and outer sides of the basement exterior wall are cut off at the induced joint and then bent inward and connected to the strengthening layer steel bars 8.
[0047] S3. Set the inner waterstop 2 in the middle of the induced joint so that the inner waterstop 2 is arranged between the two strengthening layer steel bars 8.
[0048] S4. Caulking boards 3 are respectively embedded on the opposite sides of the induced joint, and the two caulking boards 3 are respectively arranged on the opposite sides of the inner waterstop 2.
[0049] S5. Pour the concrete of the basement exterior wall, and add anti-cracking fibers into the concrete of the basement exterior wall on the opposite sides of the induced joint.
[0050] S6. Fill the other side joint of the induced joint with the sealing paste 5.
[0051] S7. Cover the outside of the other side joint of the induced joint far from the retaining structure 6 with a water receiving trough 4.
[0052] Finally, a stainless-steel water receiving tank 4 is arranged outside the induced joint, and the infiltrated water is introduced into the sectional drain in an organized manner and discharged into the wastewater pump house. Starting from structural waterproofing, this waterproof structure can effectively improve the waterproof performance of the expansion joint and solve the problem of water seepage in the basement exterior wall.
[0053] For the induced joint structure of the basement exterior wall of the present invention, waterstops are respectively arranged on the outer side and the middle part of the basement exterior wall. Through multiple waterproof measures, the waterproof performance of the basement exterior wall is enhanced. At the same time, the steel bar structure of the basement exterior wall is integrally connected with the steel bars of the strengthening layer, effectively resisting the stress of concrete shrinkage deformation. By arranging an induced joint externally to form a pre-cracked part, the middle part of the basement exterior wall is pulled. Additionally, multiple waterproof layers are added. The operation is simple and easy, and the popularization is strong. It can effectively reduce the influence of cracks on the strength of the concrete structure.
[0054] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.
Claims
1. An induced joint structure for the exterior wall of a basement, characterized in that Including: An external water stop belt, the basement exterior wall is cast on the inner side of the retaining structure, and the external water stop belt is laid at the side seam opening facing the retaining structure of the induced joint of the basement exterior wall; An internal water stop belt, which is arranged in the middle of the induced joint. Reinforcing layer steel bars are arranged on the opposite sides of the internal water stop belt, and the opposite sides of the reinforcing layer steel bars are embedded in the basement exterior walls on the opposite sides of the induced joint. Anti-cracking fibers are incorporated into the concrete of the basement exterior walls on the opposite sides of the induced joint; Caulking boards, the caulking boards are respectively embedded on the opposite sides of the induced joint, and the two caulking boards are respectively arranged on the opposite sides of the internal water stop belt. The wall steel bars on the inner and outer sides of the basement exterior wall are cut off at the induced joint and then bent inward and connected to the reinforcing layer steel bars; A water receiving trough, which covers the outside of the other side seam opening of the induced joint away from the retaining structure, and a sealing paste is filled in the other side seam opening of the induced joint.
2. The induced joint structure of the basement exterior wall according to claim 1, characterized in that, A waterproof coiled material is laid on the side of the retaining structure facing the basement exterior wall, and a waterproof strengthening layer is laid on the side of the waterproof coiled material facing the basement exterior wall, and the position of the waterproof strengthening layer corresponds to the position of the induced joint.
3. The induced joint structure of the basement exterior wall according to claim 1, characterized in that, The external water stop belt is a back-bonded water stop belt.
4. The induced joint structure of the basement exterior wall according to claim 1, characterized in that The internal water stop belt is a steel-edge rubber water stop belt.
5. The induced joint structure of the basement exterior wall according to claim 1, wherein A receiving groove is formed on the side surface of the caulking board facing the seam wall of the induced joint, and a water-swelling water stop glue is filled in the receiving groove.
6. The induced joint structure of the basement exterior wall according to claim 5, characterized in that, Two receiving grooves are arranged on each side surface of the caulking board, and a grouting pipe is buried in the basement exterior wall. One end of the grouting pipe extends into the induced joint and is arranged between the two receiving grooves.
7. A construction method for the induced joint structure of the basement exterior wall according to any one of claims 1 to 6, characterized in that, Including the following steps: Lay the external water stop belt on the inner side of the retaining structure so that the position of the external water stop belt corresponds to the position of the induced joint of the basement exterior wall; Bind the steel bars of the basement exterior wall, and set reinforcing layer steel bars at the induced joint of the basement exterior wall, so that the wall steel bars on the inner and outer sides of the basement exterior wall are cut off at the induced joint and then bent inward and connected to the reinforcing layer steel bars; Set the internal water stop belt in the middle of the induced joint so that the internal water stop belt is arranged between the two reinforcing layer steel bars; Caulking boards are respectively embedded on the opposite sides of the induced joint, and the two caulking boards are respectively arranged on the opposite sides of the internal water stop belt; Pour the concrete of the basement exterior wall, and incorporate anti-cracking fibers into the concrete of the basement exterior walls on the opposite sides of the induced joint; Fill a sealing paste in the other side seam opening of the induced joint; Cover a water receiving trough outside the other side seam opening of the induced joint away from the retaining structure.