Deformation joint structure suitable for underground engineering
The design of the Z-shaped waterstop assembly solves the problems of loosening and leakage of expansion joint waterstops, achieving efficient waterproofing and seepage prevention, and is suitable for expansion joint structures in underground engineering.
Patent Information
- Application Number
- CN202422094893.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-08-28
AI Technical Summary
Existing expansion joint waterstops are prone to loosening and leakage in underground engineering, and the rubber waterstops have poor adhesion to concrete, making it difficult to effectively prevent water seepage.
The Z-shaped waterstop assembly consists of an elastic rubber ring and an L-shaped waterstop. The elastic rubber ring is compressed and deformed in the expansion joint to fit tightly against the concrete, while the L-shaped waterstop is embedded in the concrete. Combined with a highly elastic sealant and a drainage pipe, it forms a multi-line contact and double waterproof structure.
It effectively reduces the risk of water seepage, improves waterproof performance, is replaceable, adapts to the elastic deformation of expansion joints, reduces the risk of leakage, and has a significant pressure relief effect, especially in high water pressure environments.
Smart Images
Figure CN223468797U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction, more particularly to a deformation joint structure suitable for underground engineering, in particular to a deformation joint structure suitable for plate structure of underground engineering. BACKGROUND
[0002] The deformation joint is set to prevent the structure from being damaged due to deformation (expansion, settlement, etc.). From the effect, it is mainly divided into expansion joint and settlement joint. Therefore, the construction of the deformation joint focuses on the deformation range of the joint, waterproofing and sealing.
[0003] Among the commonly used waterproof measures for deformation, the commonly used ones are the middle-buried water stop belt and the externally attached water stop belt. The middle-buried steel plate water stop belt is convenient to pre-bury and fix, is not easy to deform, and has good water permeation resistance. However, the steel plate water stop belt and the concrete section are both rigid, and a small amount of deformation during pouring and use can easily cause joint gap leakage. The rubber water stop belt has strong deformation adaptability, and the compression rebound sealing performance is improved compared with the steel plate water stop belt. However, it cannot completely fill and seal the joint gap outside the deformation. In addition, the adhesion performance of the rubber and other high molecular materials to the concrete is poor. The rubber water stop belt is pre-buried and fixed by iron wire binding. The rigidity is not as good as the steel plate water stop belt. During the vibrating process during pouring, it is easy to loosen and bend, and even form a hole, causing the concrete at the joint to be not dense.
[0004] The commonly used type of externally attached water stop belt is plastic or rubber. It uses the high elasticity of rubber to make the water stop belt tightly press against the concrete under external action, reducing the risk of water permeation. However, due to the poor adhesion of the rubber material to the concrete, it still provides an interface for water permeation. For structures with high risk of settlement deformation, the detachable Ω-shaped water stop belt is also used. However, the corrosion prevention of the Ω-shaped water stop belt is critical. The pre-buried steel plate and the cover-shaped nut are installed in the early stage. The Ω-shaped rubber water stop belt may have rusted during the later installation. Although the Ω-shaped water stop belt can be replaced, if the pre-buried steel plate and the nut have rusted, it is meaningless to replace them. SUMMARY
[0005] The utility model aims at the problems existing in the prior art and provides a deformation joint structure suitable for underground engineering.
[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0007] The application discloses a deformation joint structure suitable for underground engineering, which comprises pre-poured waterproof concrete, post-poured waterproof concrete and a deformation joint between the pre-poured waterproof concrete and the post-poured waterproof concrete, wherein a Z-shaped waterstop assembly is arranged in the deformation joint, the Z-shaped waterstop assembly comprises an elastic rubber ring which is tightly abutted against the pre-poured waterproof concrete and the post-poured waterproof concrete, a first L-shaped waterstop is arranged above the elastic rubber ring, a second L-shaped waterstop is arranged below the elastic rubber ring, the end of the first L-shaped waterstop is embedded in the post-poured waterproof concrete, and the end of the second L-shaped waterstop is embedded in the pre-poured waterproof concrete; or the end of the first L-shaped waterstop is embedded in the pre-poured waterproof concrete, and the end of the second L-shaped waterstop is embedded in the post-poured waterproof concrete.
[0008] The deformation joint structure suitable for underground engineering has the advantages of simple structure, easy installation and use, good waterproof and anti-seepage performance, good adaptability to the deformation joint and good contact with the concrete by arranging the Z-shaped waterstop assembly, reduced water seepage risk, long service life, replaceability and the like.
[0009] The Z-shaped waterstop assembly has at least double waterproof effects, that is, the elastic rubber ring is in a compressed state and has counteracting forces acting on both sides, can be tightly abutted against the pre-poured waterproof concrete and the post-poured waterproof concrete, and can effectively prevent water from seeping from the gap between the elastic rubber ring and the concrete; the first L-shaped waterstop and the second L-shaped waterstop are inserted into the concrete and form waterstop structures in the concrete on both sides, and the elastic rubber ring and the first L-shaped waterstop and the second L-shaped waterstop both have the effect of prolonging the water seepage path.
[0010] The elastic rubber ring has a circular ring structure in a normal state, has good elastic deformation capacity, is arranged in the deformation joint, is compressed and deformed, has an elliptical structure, tightly abuts against the concrete, changes single-line contact into multi-line contact and surface contact, has a larger contact area with the concrete, has better sealing effect, and is beneficial to building a water blocking and anti-seepage barrier.
[0011] The Z-shaped waterstop assembly is vertically arranged in the center of the deformation joint during installation, that is, the first L-shaped waterstop and the second L-shaped waterstop can be embedded in the concrete in the upward and downward directions respectively, form waterstop structures in two directions, and the elastic rubber ring can be relatively stably fixed in the deformation joint through the connection of the first L-shaped waterstop and the second L-shaped waterstop.
[0012] Further, the deformation joint is further filled with high-elasticity sealing glue on the side of the backwater surface, so that the waterproof performance is further improved.
[0013] Further, the lower part of the waterproof concrete and the waterproof concrete is further provided with a cushion layer, the deformation joint is further provided with a drain pipe on the water side, the drain pipe is arranged at the intersection of the cushion layer and the deformation joint, and underground water at the deformation joint position can be collected.
[0014] Further, the first L-shaped waterstop and the second L-shaped waterstop are respectively L-shaped galvanized steel plates, and the first L-shaped waterstop and the second L-shaped waterstop are symmetrically arranged with the center axis of the elastic rubber ring as the center.
[0015] Further, the vertical part of the L-shaped galvanized steel plate extends into the elastic rubber ring and is fixed, and the horizontal part of the L-shaped galvanized steel plate extends into the waterproof concrete or the waterproof concrete by a distance not less than half of the width of the deformation joint.
[0016] Further, the end of the first L-shaped waterstop and the second L-shaped waterstop is provided with a plurality of clamping protrusions in the length direction, the elastic rubber ring is provided with a plurality of clamping holes, and the clamping protrusions are respectively inserted into the clamping holes.
[0017] Alternatively, the end of the first L-shaped waterstop and the second L-shaped waterstop is provided with a positioning column in the length direction, the outer periphery of the elastic rubber ring is provided with two upper and lower grooves in the length direction, the grooves are provided with positioning holes, the end of the first L-shaped waterstop and the second L-shaped waterstop is clamped in the groove, and the positioning column passes through the positioning hole.
[0018] Alternatively, the elastic rubber ring is a pair of semicircular structures, and the end faces of the semicircular structures are respectively fixedly connected with the side faces of the first L-shaped waterstop and the second L-shaped waterstop.
[0019] Compared with the prior art, the utility model has the advantages of: 1, the deformed joint structure suitable for underground engineering simple structure, easy to install and use, has good waterproof, anti -permeable performance, utilize the setting of Z shaped water stop belt assembly can be better adaptation deformed joint and with concrete contact, effectively reduced the risk of seepage, and durable, also have the characteristics of replaceable;2, Z shaped water stop belt assembly at least has the function of double waterproof, first, its elastic rubber ring is in compression state, can tightly fit the first pouring waterproof concrete and the post -cured waterproof concrete, effectively prevent moisture from the gap between elastic rubber ring and concrete seepage;Second, the first L shaped water stop belt and the second L shaped water stop belt extend into the concrete, form water -stop structure in the concrete on both sides, and with elastic rubber ring itself all have the effect of extending the seepage path;3, the elastic rubber ring setting in the deformed joint can be compressed and deformed, present similar to the structure of ellipse, like this not only let it exist reaction force, make it close to concrete, and can let single line contact become multi -line contact and face contact, let its contact area with concrete be larger, the sealing effect formed is better, be favorable to build a water -blocking, anti -permeable barrier;4, the drainage pipe is arranged on the water side, and the groundwater in the deformed joint position is collected, and for the groundwater with high water pressure, also can play the role of pressure relief, reduce the risk of leakage. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the whole structure schematic view of the deformed joint structure suitable for underground engineering of the utility model;
[0021] Figure 2 It is a structure schematic view of the Z shaped water stop belt assembly of the utility model;
[0022] Figure 3 It is Figure 2 It is the local structure schematic view of A-A section in;
[0023] Figure 4 It is another connection structure schematic view of the Z shaped water stop belt assembly of the utility model;
[0024] Figure 5 It is Figure 2 It is the local structure schematic view of B in;
[0025] Figure 6 It is another connection structure schematic view of the Z shaped water stop belt assembly of the utility model;
[0026] Figure 7 It is Figure 6 It is the further improved structure schematic view of the Z shaped water stop belt assembly;
[0027] In the figure: 1. Pour waterproof concrete first; 2. Pour waterproof concrete later; 3. Expansion joint; 4. Z-shaped waterstop assembly; 401. Elastic rubber ring; 402. First L-shaped waterstop; 403. Second L-shaped waterstop; 5. High-elasticity sealant; 6. Pad layer; 7. Drain pipe; 8. Snap-in protrusion; 9. Snap-in hole; 10. Positioning column; 11. Groove; 12. Positioning hole; 13. Metal shrapnel. DETAILED DESCRIPTION
[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1
[0030] like Figure 1 As shown, a deformation joint structure suitable for underground engineering includes pre-cast waterproof concrete 1, post-cast waterproof concrete 2, and a deformation joint 3 located between the pre-cast waterproof concrete 1 and the post-cast waterproof concrete 2, wherein a Z-shaped waterstop assembly 4 is provided in the deformation joint 3, and the Z-shaped waterstop assembly 4 includes an elastic rubber ring 401 that is sealed against the pre-cast waterproof concrete 1 and the post-cast waterproof concrete 2, a first L-shaped waterstop 402 is provided above the elastic rubber ring 401, and a second L-shaped waterstop 403 is provided below the elastic rubber ring 401, an end of the first L-shaped waterstop 402 is buried in the post-cast waterproof concrete 2, and an end of the second L-shaped waterstop 403 is buried in the pre-cast waterproof concrete 1; or, an end of the first L-shaped waterstop 402 is buried in the pre-cast waterproof concrete 1, and an end of the second L-shaped waterstop 403 is buried in the post-cast waterproof concrete 2. Both connection methods are acceptable, as long as the pre-cast waterproof concrete and the post-cast waterproof concrete are respectively connected with L-shaped waterstops.
[0031] The deformation joint structure suitable for underground engineering has simple structure, is easy to install and use, has good waterproof and anti-leakage performance, can be well matched with the deformation joint and contact with the concrete by arranging the Z-shaped water stop belt assembly 4, effectively reduces the water leakage risk, is durable, and has the replaceable feature.
[0032] The Z-shaped water stop belt assembly 4 has at least a double waterproof effect, one is that the elastic rubber ring 401 is in a compressed state and has a reaction force acting on both sides, which can tightly fit the first-poured waterproof concrete and the second-poured waterproof concrete, effectively preventing water from seeping from the gap between the elastic rubber ring and the concrete, and the other is that the first L-shaped water stop belt 402 and the second L-shaped water stop belt 403 extend into the concrete to form a water stop structure in the concrete on both sides, and both have the effect of extending the water seepage path.
[0033] The elastic rubber ring 401 has a circular ring structure in a normal state, and has good elastic deformation capacity, so that when it is arranged in the deformation joint, the elastic rubber ring 401 is compressed and deformed to have an elliptical structure, which not only allows it to have a reaction force to tightly fit the concrete, but also allows single-line contact to become multi-line contact and surface contact, so that the contact area between the elastic rubber ring and the concrete is larger, the sealing effect is better, and a water-blocking and anti-seepage barrier is formed.
[0034] The Z-shaped water stop belt assembly 4 is vertically arranged in the center of the deformation joint during installation, that is, the first L-shaped water stop belt 402 and the second L-shaped water stop belt 403 can be embedded in the concrete in the upward and downward directions to form a waterproof structure in two directions, and the elastic rubber ring can be relatively stably fixed in the deformation joint through the connection of the first L-shaped water stop belt and the second L-shaped water stop belt.
[0035] Preferably, the first-poured waterproof concrete 1 and the second-poured waterproof concrete 2 are added with magnesium oxide expanding agent to prepare shrinkage-compensating concrete, which can prevent the whole concrete from producing through cracks and forming new water leakage channels.
[0036] Further, the deformation joint 3 is filled with high-elasticity sealant 5 on the backwater side, the high-elasticity sealant 5 is used to seal above the deformation joint 3, which can seal the gap between the first-poured waterproof concrete 1 and the second-poured waterproof concrete 2 above, and further improve the waterproof performance.
[0037] The high-elasticity sealant 5 can be an MS sealant, which is a cross-linked polymer based on silane-terminated polyether, generally free of silicone components and solvents, free of polyurethane groups, most formulations are odorless and environmentally friendly, and have inherent elasticity, can absorb and compensate dynamic load, uniformly transmit stress, prevent premature fatigue of materials, and can realize bonding between various substrates.
[0038] Further, the pre-poured waterproof concrete 1 and the post-poured waterproof concrete 2 are further provided with a cushion layer 6, and the deformation joint 3 is further provided with a drain pipe 7 on the water-facing side, which is arranged at the intersection of the cushion layer 6 and the deformation joint 3. The drain pipe 7 is arranged on the water-facing side to collect underground water at the position of the deformation joint, and for underground water with high water pressure, it can also play a role in pressure relief, reducing the risk of leakage.
[0039] The arrangement of the drain pipe 7 is beneficial to the preferential collection of underground water into the drain pipe, while eliminating the adverse effects of the deformation joint on the drain pipe in the later stage. Preferably, the drain pipe 7 is a semicircular PVC drain pipe, and the diameter of the PVC drain pipe is substantially the same as the width of the deformation joint.
[0040] Further, the first L-shaped waterstop 402 and the second L-shaped waterstop 403 are L-shaped galvanized steel plates, which have good corrosion resistance; the first L-shaped waterstop 402 and the second L-shaped waterstop 403 are symmetrically arranged with the central axis of the elastic rubber ring 401 as the center, so that the pre-poured waterproof concrete 1 and the post-poured waterproof concrete 2 can be connected to the L-shaped galvanized steel plate.
[0041] Further, the vertical part of the L-shaped galvanized steel plate extends into the elastic rubber ring and is fixed, and the horizontal part of the L-shaped galvanized steel plate extends into the pre-poured waterproof concrete or the post-poured waterproof concrete by a distance not less than half the width of the deformation joint, which can ensure the connection strength and reasonably prevent water seepage in the concrete.
[0042] Further, in combination with the Figure 2 and Figure 3 , the end portions of the first L-shaped waterstop 402 and the second L-shaped waterstop 403 are provided with a plurality of clamping protrusions 8 along the length direction, the elastic rubber ring 401 is provided with a plurality of clamping holes 9, and the clamping protrusions 8 are respectively inserted into the clamping holes 9.
[0043] The clamping protrusions 8 can be a plurality of clamping protrusions arranged at intervals, and the clamping protrusions 8 can be connected to the L-shaped waterstop and the elastic rubber ring by being inserted into the clamping holes 9. Since the elastic rubber ring 401 has a certain elasticity and softness, the clamping holes can be expanded during connection, so that the size of the clamping holes can be slightly smaller than the size of the clamping protrusions, so that the two can be better tightly connected. Embodiment 2
[0044] This embodiment provides another structure of the connection between the L-shaped water stop belt and the elastic rubber ring. Figure 4 and Figure 5 As shown in the figure, the end of the first L-shaped water stop belt 402 and the second L-shaped water stop belt 403 is provided with a positioning column 10 along the length direction, the outer periphery of the elastic rubber ring 401 is provided with two upper and lower grooves 11 along the length direction, the positioning hole 12 is arranged in the groove 11, and the end of the first L-shaped water stop belt and the second L-shaped water stop belt is clamped in the groove 11, and the positioning column 10 passes through the positioning hole 12.
[0045] When connected, the positioning column 10 is inserted into the positioning hole 12 one by one, and the end of the first L-shaped water stop belt 402 and the second L-shaped water stop belt 403 abuts in the groove 11, so that the connection structure is more simple and convenient, and can be disassembled later. Embodiment 3
[0046] This embodiment provides another structure of the connection between the L-shaped water stop belt and the elastic rubber ring. Figure 6 As shown in the figure, the elastic rubber ring 401 is a pair of semicircular structures, and the end surface of the semicircular structure is fixedly connected with the side surface of the first L-shaped water stop belt 402 and the second L-shaped water stop belt 403 respectively. In this structure, the end surface of the semicircular structure can be connected and fixed by welding or bonding.
[0047] As a further improvement of this embodiment, the arc-shaped metal spring 13 can be fixedly connected with the side surface of the first L-shaped water stop belt 402 and the second L-shaped water stop belt 403 respectively, and then the elastic rubber ring is coated outside the metal spring 13, so that the connection structure not only has good elastic deformation ability, but also has certain rigidity and better support.
[0048] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A deformation joint structure suitable for underground engineering, comprising pre-cast waterproof concrete, post-cast waterproof concrete, and a deformation joint located between the pre-cast waterproof concrete and the post-cast waterproof concrete, characterized in that: The Z-shaped waterstop assembly is arranged in the deformation joint, and the Z-shaped waterstop assembly comprises an elastic rubber ring which is sealed against the early-poured waterproof concrete and the late-poured waterproof concrete, a first L-shaped waterstop is arranged above the elastic rubber ring, and a second L-shaped waterstop is arranged below the elastic rubber ring, the end of the first L-shaped waterstop is embedded in the late-poured waterproof concrete, and the end of the second L-shaped waterstop is embedded in the early-poured waterproof concrete; or the end of the first L-shaped waterstop is embedded in the early-poured waterproof concrete, and the end of the second L-shaped waterstop is embedded in the late-poured waterproof concrete.
2. The deformation joint construction for underground works as claimed in claim 1, wherein, The deformation joint is further filled with high-elasticity sealant on the side of the backwater surface.
3. The construction of a deformation joint suitable for underground works according to claim 1, characterized in that, The early-poured waterproof concrete and the late-poured waterproof concrete are further provided with a cushion layer below, and the deformation joint is further provided with a drain pipe on the side of the water surface, and the drain pipe is arranged at the intersection of the cushion layer and the deformation joint.
4. The construction of a deformation joint suitable for underground works according to claim 1, characterized in that, The first L-shaped waterstop and the second L-shaped waterstop are L-shaped galvanized steel plates, and the first L-shaped waterstop and the second L-shaped waterstop are arranged in a central symmetry mode with the central axis of the elastic rubber ring as the center.
5. The deformation joint construction for underground works as claimed in claim 4, wherein, The vertical part of the L-shaped galvanized steel plate extends into the elastic rubber ring and is fixed, and the horizontal part of the L-shaped galvanized steel plate extends into the early-poured waterproof concrete or the late-poured waterproof concrete by a distance not less than half of the width of the deformation joint.
6. The construction of a deformation joint suitable for use in underground works according to claim 1, characterised in that, The ends of the first L-shaped waterstop and the second L-shaped waterstop are provided with a plurality of clamping protrusions in the length direction, the elastic rubber ring is provided with a plurality of clamping holes, and the clamping protrusions are respectively inserted into the clamping holes.
7. The deformation joint construction for underground works as claimed in claim 1, wherein, The ends of the first L-shaped waterstop and the second L-shaped waterstop are provided with positioning columns in the length direction, the outer periphery of the elastic rubber ring is provided with two upper and lower grooves in the length direction, the grooves are provided with positioning holes, the ends of the first L-shaped waterstop and the second L-shaped waterstop are clamped in the grooves, and the positioning columns pass through the positioning holes.
8. The deformation joint construction for underground works as claimed in claim 1, wherein, The elastic rubber ring is a pair of semicircular structures, and the end faces of the semicircular structures are fixedly connected with the side faces of the first L-shaped waterstop and the second L-shaped waterstop, respectively.