CN219992416U - Self-sealing joint for underground diaphragm wall - Google Patents
Self-sealing joint for underground diaphragm wall Download PDFInfo
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- CN219992416U CN219992416U CN202321218840.6U CN202321218840U CN219992416U CN 219992416 U CN219992416 U CN 219992416U CN 202321218840 U CN202321218840 U CN 202321218840U CN 219992416 U CN219992416 U CN 219992416U
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- 238000007789 sealing Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims abstract description 18
- 239000011440 grout Substances 0.000 claims description 20
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 claims 2
- 241000283216 Phocidae Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 239000003673 groundwater Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model relates to a self-sealing joint of an underground diaphragm wall, which comprises an I-shaped joint body, wherein a first side of a web plate of the joint body is used for being fixed to a concrete wall body poured firstly, a second side of the web plate of the joint body is used for being fixed to a concrete wall body poured later, a fixing plate which is wavy is fixed on the second side of the web plate of the joint body, a containing space is formed between the web plate and the fixing plate, and water-swelling water-stop glue is filled in the containing space. According to the utility model, the wavy fixing plates are used for filling the water-swelling glue between the fixing plates, so that the water seepage path is increased, and the technical problem of poor water stopping effect of the ground wall joint in the prior art is solved. The wave-shaped fixing plate and the water-swelling water-stopping glue have combined action, so that the groundwater seepage path is prolonged, the wave-shaped prolonged path can be prevented from being invalid, the seepage path is automatically closed, and the impermeability of the joint is improved.
Description
Technical Field
The utility model relates to the field of building construction, in particular to a self-sealing joint of an underground diaphragm wall.
Background
The current diaphragm wall construction technology is mature, but from the current technical research and construction practice, how to ensure the joint construction quality still has problems and challenges. The construction joint of the underground diaphragm wall belongs to the construction joint which is artificially arranged due to the construction process requirement, the joint of the underground diaphragm wall is arranged at the construction joint, concrete is discontinuously formed to form a seepage channel due to the fact that concrete on two sides of the joint is poured in sequence, most of the underground diaphragm wall is constructed underwater, waterproof coating, waterproof adhesive tape and other measures are difficult to improve waterproof performance, and therefore the most convenient and feasible means is to design the joint model to gradually reduce seepage pressure to play a role in water stopping by increasing the turbulent flow path of underground water. In the prior art, a simple bolt or a water stop plate is often adopted as a ground wall joint, and the main reasons for the non-ideal anti-seepage effect are as follows: the joint form is defective, and the water stopping effect is poor; in the construction process, the joint is polluted by the cast-in concrete, so that the cast-in concrete has defects, and a seepage channel is formed.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a self-sealing joint of an underground diaphragm wall, which solves the technical problem of poor water stopping effect of the joint of the underground diaphragm wall in the prior art.
The utility model discloses a self-sealing joint of an underground diaphragm wall, which comprises an I-shaped joint body, wherein a first side of a web plate of the joint body is used for being fixed to a concrete wall body poured firstly, a second side of the web plate of the joint body is used for being fixed to a concrete wall body poured later, a fixing plate which is wavy is fixed on the second side of the web plate of the joint body, a containing space is formed between the web plate and the fixing plate, and water-swelling water stop glue is filled in the containing space.
The self-sealing joint for the underground diaphragm wall is further improved in that the flange plates at the two sides of the joint body are used for being fixed to the two sides of the reinforcing steel bars of the concrete wall body poured first, and the deformable grout stopping plates are respectively arranged at the outer sides of the flange plates at the two sides of the joint body.
The utility model further improves the self-sealing joint of the underground diaphragm wall, wherein the outer sides of the flange plates at the two sides of the joint body are respectively provided with a fixed seat for inserting the grout stop plate, one end of the grout stop plate is inserted into the fixed seat, and the other end of the grout stop plate is a free end which extends reversely to the concrete flow direction of the concrete wall poured first.
The self-sealing joint of the underground diaphragm wall is further improved in that the wave height of the fixing plate is gradually reduced from two sides to the middle, and the shape of one end, connected with the joint body, of the reinforcing steel bar of the concrete wall poured later is matched with the shape of the fixing plate.
The self-sealing joint of the underground diaphragm wall is further improved in that the fixing plate and the web plate are sealed by sealant.
Compared with the prior art, the utility model has positive and obvious effects. According to the utility model, the wavy fixing plates are used for filling the water-swelling glue between the fixing plates, so that the water seepage path is increased, and the technical problem of poor water stopping effect of the ground wall joint in the prior art is solved. The wave-shaped fixing plate and the water-swelling water-stopping glue have combined action, so that the groundwater seepage path is prolonged, the wave-shaped prolonged path can be prevented from being invalid, the seepage path is automatically closed, and the impermeability of the joint is improved. The grouting plate reduces the problem of pouring and flowing around of concrete of the first applied wall, avoids joint pollution, reduces the difficulty of cleaning the wall by brushing, and improves the joint connection quality and the impervious effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a longitudinal cross-sectional view of a self-sealing joint for an underground diaphragm wall of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the utility model provides a self-sealing joint for an underground diaphragm wall, which comprises an i-shaped joint body 1, wherein a web first side of the joint body 1 is used for being fixed to a concrete wall 2 poured firstly, a web second side of the joint body 1 is used for being fixed to a concrete wall 32 poured later, a wave-shaped fixing plate 4 is fixed on the web second side of the joint body 1, a containing space is formed between the web and the fixing plate 4, and water-swelling water-stop glue 5 is filled in the containing space (in the prior art, super water-stop materials PJ220 and PJ400 of the water-swelling water-stop glue 5 are adopted as water-stop materials with excellent construction performance, and are water-swelling single-liquid sealing agents). In this embodiment, the joint body 1 is i-steel. During construction, two sections of wavy fixing plates 4 with gradually changed cross sections are arranged on one side of the welded I-steel web plate, which is used for wall application, along the length of the I-steel, the fixing plates 4 are formed by rolling thin-wall steel plates with good elasticity and flexibility, two sides of the fixing plates 4 are welded with the I-steel web plate to form a cavity with the web plate, and the wavy cavity is filled with water-swelling water stop glue 5. On one hand, the bending of the fixing plate 4 is utilized to fully increase the length of the groundwater seepage path at the joint seam so as to gradually weaken the seepage pressure and achieve the water stopping purpose. On the other hand, the cavity formed by the fixing plate 4 and the I-steel web is filled with water-swelling water stop glue 5, so that the problem that groundwater directly enters the wave cavity to pass through the cavity due to the fact that the connection part of the fixing plate 4 and the I-steel web is not tight, and the effect of prolonging the path of the fixing plate 4 is invalid can be prevented; meanwhile, if the cavity of the fixing plate 4 is filled with water, the water stop glue is expanded, so that the fixing plate 4 is extruded to the concrete surface and is further closely attached to the concrete surface, and the water stop effect is improved. The joint of the utility model utilizes relatively simple measures to realize that the joint is subjected to adverse factors under water to lead the anti-detour and anti-leakage measures to be passively triggered, automatically block or seal the joint, and realize multiple fortification, thereby improving the joint connection quality and the anti-leakage capability.
More preferably, a one-way pressure valve can be arranged on the cavity formed by the fixing plate 4, when the water pressure reaches a set pressure value, the valve is opened, water enters the cavity to trigger the water-swelling water stop glue 5 to swell and react, and the seepage channel is closed.
Preferably, the flange plates at two sides of the joint body 1 are used for being fixed at two sides of the reinforcing steel bar 8 of the concrete wall body poured first, and the deformable grout stop plates 6 are respectively arranged at the outer sides of the flange plates at two sides of the joint body 1. The grout stop plate 6 is used for preventing the hidden trouble of joint water seepage caused by the fact that the grout stop plate is wound on two flange plates of the joint on one side of the rear wall when the concrete of the front wall is poured. The grout stop plate 6 adopts a thin-wall steel plate with excellent elasticity, one side of the grout stop plate is fixed on the I-steel flange plate, the other side of the grout stop plate is in a movable state, the movable end faces to the side of the first applied wall, and when concrete is poured, the grout stop plate 6 is outwards opened under the action of the lateral pressure of the concrete to enable the movable end to prop against the wall 10 of the continuous wall, so that the concrete is reversely stopped, and the purpose of blocking a concrete bypass channel is achieved. In fig. 1, the pulp sheet 6 is opened up to the position of the broken line.
Preferably, fixing seats 7 for inserting the grout stop plates 6 are respectively arranged on the outer sides of the flange plates on the two sides of the joint body 1, one end of each grout stop plate 6 is inserted into each fixing seat, and the other end of each grout stop plate 6 is a free end extending reversely in the concrete flow direction of the concrete wall 2 poured earlier. The fixed end of the slurry stopping plate 6 can be a fixed base with a clamping groove, the base is welded on the I-steel flange plate, and the slurry stopping plate 6 is inserted into the clamping groove, so that the slurry stopping plate is convenient to install and detach and has more flexible opportunity.
Preferably, the wave height of the fixing plate 4 decreases from two sides to the middle part, and the shape of one end of the reinforcing steel bar 9 of the concrete wall poured at the rear and the joint body 1 is matched with the shape of the fixing plate 4, so that the poured concrete has enough support to be tightly attached to the fixing plate 4, and the condition of a cavity is reduced. In this embodiment, the fixing plate 4 includes two unit plates, and the two unit plates are respectively disposed between the center line and the end of the web, so that the reinforcing steel bar 9 of the concrete wall poured later is formed into a shape of a "mountain" to be more closely attached to the fixing plate 4.
Preferably, the fixing plate 4 and the web are sealed by sealant. The sealing glue can further improve the water stopping effect of the joint body 1.
When in construction, the method comprises the following steps: firstly, manufacturing welding I-steel, and respectively welding a fixed base of a grout stop plate 6 and a gradual change wave-shaped fixed plate 4 on a flange plate and a web plate after the welding of the I-steel is finished. And then the welded joint is connected with a reinforcement cage for use. Before the reinforcement cage of the diaphragm wall is ready to be hoisted and placed in the well excavated groove of the diaphragm wall, the joint grout stop plate 6 is inserted into the clamping groove base on the ground, the installation and the fixation are well carried out, meanwhile, the water-swelling water stop glue 5 is filled in the accommodating cavity, the upper end and the lower end of the fixing plate 4 are tightly sealed by adopting sealing glue, and then the reinforcement cage and the joint can be placed in the groove together and concrete is poured.
According to the utility model, the wavy fixing plates are used for filling the water-swelling glue between the fixing plates, so that the water seepage path is increased, and the technical problem of poor water stopping effect of the ground wall joint in the prior art is solved. The wave-shaped fixing plate and the water-swelling water-stopping glue have combined action, so that the groundwater seepage path is prolonged, the wave-shaped prolonged path can be prevented from being invalid, the seepage path is automatically closed, and the impermeability of the joint is improved. The grouting plate reduces the problem of pouring and flowing around of concrete of the first applied wall, avoids joint pollution, reduces the difficulty of cleaning the wall by brushing, and improves the joint connection quality and the impervious effect.
None of the utility models are related to the same or are capable of being practiced in the prior art. The present utility model is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present utility model can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (5)
1. The utility model provides a diaphragm wall self sealss connects, its characterized in that, including the joint body that is the I shape, the first side of web of joint body is used for being fixed to the concrete wall who pours earlier, the web second side of joint body is used for being fixed to the concrete wall who pours after, the web second side of joint body is fixed with and is the fixed plate of wavy, the web with be formed with the accommodation space between the fixed plate, the accommodation space intussuseption is filled with water-swelling water stop glue.
2. The underground diaphragm wall self-sealing joint according to claim 1, wherein the two side flange plates of the joint body are used for being fixed to two sides of the reinforcing steel bars of the concrete wall body poured first, and the deformable grout stop plates are respectively arranged on the outer sides of the two side flange plates of the joint body.
3. The self-sealing joint of underground diaphragm wall according to claim 2, wherein the outer sides of the flange plates at the two sides of the joint body are respectively provided with a fixed seat for inserting the grout stop plate, one end of the grout stop plate is inserted into the fixed seat, and the other end of the grout stop plate is a free end extending reversely to the concrete flow direction of the concrete wall poured earlier.
4. The self-sealing joint of underground diaphragm wall according to claim 1, wherein the wave height of the fixing plate decreases from two sides to the middle position, and the shape of the end of the reinforcing steel bar of the concrete wall body poured later, which is connected with the joint body, is adapted to the shape of the fixing plate.
5. The self-sealing joint of diaphragm wall of claim 1, wherein said retaining plate is sealed with said web using a sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321218840.6U CN219992416U (en) | 2023-05-19 | 2023-05-19 | Self-sealing joint for underground diaphragm wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321218840.6U CN219992416U (en) | 2023-05-19 | 2023-05-19 | Self-sealing joint for underground diaphragm wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219992416U true CN219992416U (en) | 2023-11-10 |
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ID=88610535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321218840.6U Active CN219992416U (en) | 2023-05-19 | 2023-05-19 | Self-sealing joint for underground diaphragm wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219992416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117802971A (en) * | 2024-01-03 | 2024-04-02 | 广州地铁设计研究院股份有限公司 | Anti-winding structure for underground wall joint and construction method thereof |
-
2023
- 2023-05-19 CN CN202321218840.6U patent/CN219992416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117802971A (en) * | 2024-01-03 | 2024-04-02 | 广州地铁设计研究院股份有限公司 | Anti-winding structure for underground wall joint and construction method thereof |
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