CN210151972U - Water-stopping abrasion-resisting protection structure for surface layer of expansion joint of drainage structure - Google Patents
Water-stopping abrasion-resisting protection structure for surface layer of expansion joint of drainage structure Download PDFInfo
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- CN210151972U CN210151972U CN201920666095.9U CN201920666095U CN210151972U CN 210151972 U CN210151972 U CN 210151972U CN 201920666095 U CN201920666095 U CN 201920666095U CN 210151972 U CN210151972 U CN 210151972U
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- expansion joint
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- 239000002344 surface layer Substances 0.000 title claims description 16
- 229920002396 Polyurea Polymers 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 23
- 238000005299 abrasion Methods 0.000 claims description 9
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 7
- 230000002441 reversible effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000009991 scouring Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004587 polysulfide sealant Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model provides a water release structure expansion joint top layer stagnant water is anti dashing to grind protective structure relates to building expansion joint top layer stagnant water and is anti dashing to grind protection technical field. The method comprises the following steps: an expansion joint is formed between two adjacent concretes, and a compression plate is embedded in the expansion joint; the middle part of rectangular channel is located the compression board directly over, and the top surface of rectangular channel and the top surface of concrete are located the coplanar, and the rectangular channel is filled with the high elasticity mortar, and the top surface of two adjacent concrete and the top surface of high elasticity mortar are brushed with one deck interfacial agent, and the polyurea coating has been scribbled on this layer interfacial agent, is provided with child base cloth in the polyurea coating. The utility model discloses constitute with the compound child base cloth of high elasticity mortar and polyurea and synthesize anti dashing and grind prevention of seepage system, can resist flood discharge building high-speed rivers and erode and anti normal/reverse water pressure, can adapt to the deformation at expansion joint, improved the reliability and the security of expansion joint top layer stagnant water greatly.
Description
Technical Field
The utility model relates to a building expansion joint top layer stagnant water and anti dashing grind protection technical field, especially indicate a water release building expansion joint top layer stagnant water is anti dashing to grind protective structure.
Background
Temperature change, uneven settlement and the like often cause the deformation of concrete structure, and hydraulic structure is in order to adapt to the structural deformation that temperature change and uneven settlement etc. caused, often needs to set up a series of expansion joints, and it is required to satisfy deformation requirement and seepage prevention requirement simultaneously. The water stopping of the expansion joint of the hydraulic structure is a very important and very easy neglected problem, the engineering stops the distortion, dislocation and deformation of the water band, the concrete is vibrated loosely and is damaged artificially, etc., which often causes the leakage phenomenon of the expansion joint, and brings hidden troubles to the safe operation of the structure, especially the expansion joint of the water release structure such as an overflow dam, a spillway, a flood discharge tunnel, a dam body culvert and the like, and once water leakage happens, the engineering safety is seriously threatened.
According to the characteristics of a water release structure, the water stop material on the surface layer of the expansion joint is selected to adapt to the structural deformation of the expansion joint, not to be damaged under the action of internal and external water pressure, and to have good durability and high-speed water flow scouring resistance, so that higher requirements are provided for the seepage-proofing treatment technology of the surface layer of the expansion joint. The water-stopping materials commonly used on the surface layer of the expansion joint in the past comprise water-stopping materials such as asphalt mortar, plastic factice, polyvinyl chloride cement, tar plastic cement and the like, and in recent years, high polymer materials such as polyurethane, polysulfide sealant and the like are widely applied to hydraulic engineering, but the water-stopping materials have the outstanding problems of easy aging, low cohesive force, poor adaptive deformation capability, environmental pollution and the like, the reliability and the safety of water stopping on the surface layer of the expansion joint are greatly reduced, and the water-stopping materials cannot meet the engineering requirements easily.
SUMMERY OF THE UTILITY MODEL
The utility model provides a construction is simple, the prevention of seepage performance is good, anti dashing grinds, is applicable to the anti dashing of outlet structure expansion joint top layer stagnant water of high-speed rivers scouring action and grinds protective structure, has solved the above-mentioned problem that prior art exists.
The technical scheme of the utility model is realized like this:
anti abrasive protection architecture that dashes of outlet structure expansion joint top layer stagnant water includes:
an expansion joint is formed between two adjacent concretes, and a compression plate is embedded in the expansion joint;
the middle part of rectangular channel is located directly over the compression board, and the top surface of rectangular channel and the top surface of concrete are located the coplanar, and the rectangular channel is filled with high elasticity mortar, and high elasticity mortar is the special product of development and production by the engineering technique ltd of the aquatic of Beijing. The top surfaces of two adjacent concretes and the top surface of the high-elasticity mortar are coated with a layer of interface agent, the interface agent is coated with a polyurea coating, and a tire base cloth is arranged in the polyurea coating.
Furthermore, a layer of interface agent is coated on the side wall of the rectangular groove, a layer of single-component polyurea is coated on the surface of the interface agent, and high-elasticity mortar is backfilled among the single-component polyurea.
Preferably, the dimensions of the rectangular groove are: the width is 2-6 cm, the depth is 1.5-4 cm, and the width is larger than the depth.
Preferably, the thickness of the polyurea coating is 3-5 mm, and the width of the polyurea coating is 25-100 cm.
Preferably, the width of the tire base fabric is smaller than the width of the polyurea coating.
Preferably, the polyurea has a width less than the width of the interfacial agent.
Furthermore, the polyurea coating is single-component polyurea or double-component slow curing polyurea, the tensile strength of the polyurea coating is more than 15MPa, the elongation at break of the polyurea coating is more than 150 percent, and the water absorption of the polyurea coating is less than 5 percent.
Preferably, the compression plate is one of polystyrene plate, polystyrene plate and wood plate.
Preferably, the high-elasticity mortar has the tensile strength of more than 1.5MPa, the elongation at break of more than 15%, the impact resistance of more than 15000 times, the bonding strength with concrete of more than 2.0MPa, the compressive strength of more than 15MPa, and elasticity, and can recover to the original shape after being compressed by 30-50% and unloaded.
The utility model has the advantages that:
1. aiming at the limitation of water stopping on the surface layer of the traditional expansion joint of a building, the complexity of seepage prevention of the expansion joint under the action of high-speed water flow scouring and forward/reverse water pressure is considered, a comprehensive seepage prevention system is formed by high-elasticity mortar and polyurea composite tire base cloth, the seepage prevention system is formed by filling the expansion joint with the high-elasticity mortar and a closed layer on the surface of the polyurea composite tire base cloth, and the reliability and the safety of water stopping on the surface layer of the expansion joint are greatly improved.
2. The anti-freezing anti-seepage construction method has the advantages of being capable of adapting to high-speed water flow scouring and normal/reverse water pressure of flood discharge buildings, good in anti-freezing property, anti-seepage property and durability, and simple and convenient in construction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the utility model relates to a water stop and abrasion resistance protection structure for the surface layer of the expansion joint of the drainage structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a water stop and abrasion resistance protection structure and construction method for expansion joint surface layer of drainage structure, include:
an expansion joint 2 is formed between two adjacent concretes 1, and a compression plate 3 is embedded in the expansion joint 2;
The side wall of the rectangular groove 4 is coated with a layer of interfacial agent 9, the inner side of the layer of interfacial agent 9 is coated with a layer of monocomponent polyurea 10, and the high-elasticity mortar 5 is backfilled among the monocomponent polyurea 10.
The dimensions of the rectangular groove 4 are: the width is 2-6 cm, the depth is 1.5-4 cm, and the width is larger than the depth. The rectangular groove 4 is positioned on the surface layer of the expansion joint 2.
The polyurea coating 7 is 3-5 mm in thickness and 25-100 cm in width.
The width of the tire base fabric 8 is smaller than the width of the polyurea coating.
The polyurea coating 7 has a width smaller than the width of the interfacial agent 6.
The polyurea coating 7 is single-component polyurea or double-component slow curing polyurea, and has tensile strength of more than 15MPa, elongation at break of more than 150 percent and water absorption of less than 5 percent.
The compression plate 3 is one of a polystyrene plate, a polystyrene plate and a wood plate.
The high-elasticity mortar 5 has the tensile strength of more than 1.5MPa, the elongation at break of more than 15%, the impact resistance of more than 15000 times, the bonding strength with concrete of more than 2.0MPa, the compressive strength of more than 15MPa, excellent elasticity and capability of recovering the original shape after being compressed by 30-50% and unloaded.
The construction method of the water-stopping abrasion-resistant protective structure for the surface layer of the expansion joint of the drainage building comprises the following steps:
1) cutting a rectangular groove on the surface layer of the expansion joint or constructing the rectangular groove by using the original seam width;
2) a compression plate is embedded and filled in the middle of the expansion joint for supporting;
3) coating a layer of interfacial agent on two sides of the rectangular groove in the step 1), coating a layer of single-component polyurea on the surface of the interfacial agent after the interfacial agent is dried, then backfilling high-elasticity mortar capable of adapting to the deformation of the expansion joint into the rectangular groove, and compacting and leveling;
4) and (3) coating a layer of interface agent on the concrete surfaces on two sides of the expansion joint and the surface of the high-elasticity mortar, coating a first layer of polyurea after the interface agent is finger-dried, then adhering a layer of tire base cloth, and coating 2-4 layers of polyurea after the polyurea is dried until the polyurea coating reaches 3-5 mm.
The utility model discloses can satisfy following requirement:
(1) meet the requirements of resisting the water pressure of 0.5-1.0 MPa of the back water surface and 1.0-2.5 MPa of the upstream water surface.
(2) The construction requirement of 2-8 cm of expansion joint seam width can be met.
(3) Can meet the requirement of large deformation of the expansion joint.
(4) Good durability, freeze-thaw resistance, water resistance, seepage prevention and scouring resistance (the flow rate is about 40m/s), and can meet the long-term operation requirement.
(5) The construction is convenient, and the original structure is not damaged.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a water stop of outlet structure expansion joint top layer is anti dashes and is ground protective structure which characterized in that includes:
an expansion joint is formed between two adjacent concretes, and a compression plate is embedded in the expansion joint;
the middle part of rectangular channel is located the compression board directly over, and the top surface of rectangular channel and the top surface of concrete are located the coplanar, and the rectangular channel is filled with the high elasticity mortar, and the top surface of two adjacent concrete and the top surface of high elasticity mortar are brushed with one deck interfacial agent, and the polyurea coating has been scribbled on this layer interfacial agent, is provided with child base cloth in the polyurea coating.
2. The water stop, abrasion resistant and protective structure for the surface layer of the expansion joint of the drainage building as claimed in claim 1, wherein the side wall of the rectangular groove is coated with a layer of interfacial agent, the surface of the layer of interfacial agent is coated with a layer of monocomponent polyurea, and the high elastic mortar is backfilled between the monocomponent polyureas.
3. The water stop and abrasion resistant protective structure for the expansion joint surface of the outlet building as claimed in claim 2, wherein the rectangular groove has the dimensions: the width is 2-6 cm, the depth is 1.5-4 cm, and the width is larger than the depth.
4. The water-stopping abrasion-resistant protection structure for the expansion joint surface layer of the water release building as claimed in claim 1, wherein the thickness of the polyurea coating is 3-5 mm, the width of the polyurea coating is 25-100 cm, and the bonding strength between the polyurea coating and the base surface concrete is more than or equal to 2.5 MPa.
5. The water stop, abrasion resistant and protective structure for the expansion joint surface of the drainage building as claimed in claim 1, wherein the width of the tire base fabric is smaller than the width of the polyurea coating.
6. The water stop and abrasion resistant protective structure for the expansion joint surface of the outlet building as claimed in claim 5, wherein the width of the polyurea is smaller than the width of the interface agent.
7. The water-stopping abrasion-resistant protection structure for the surface layer of the expansion joint of the water drainage building as claimed in claim 1, wherein the compression plate is one of polystyrene plate, polystyrene plate and wood plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920666095.9U CN210151972U (en) | 2019-05-09 | 2019-05-09 | Water-stopping abrasion-resisting protection structure for surface layer of expansion joint of drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920666095.9U CN210151972U (en) | 2019-05-09 | 2019-05-09 | Water-stopping abrasion-resisting protection structure for surface layer of expansion joint of drainage structure |
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| Publication Number | Publication Date |
|---|---|
| CN210151972U true CN210151972U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920666095.9U Expired - Fee Related CN210151972U (en) | 2019-05-09 | 2019-05-09 | Water-stopping abrasion-resisting protection structure for surface layer of expansion joint of drainage structure |
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| Country | Link |
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| CN (1) | CN210151972U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676908A (en) * | 2020-06-18 | 2020-09-18 | 中国水利水电科学研究院 | Concrete panel tensile joint and peripheral joint surface water stop structure and construction method thereof |
| CN112342876A (en) * | 2020-10-30 | 2021-02-09 | 中国五冶集团有限公司 | Retaining structure for foam concrete pouring rapid partition construction and construction method thereof |
-
2019
- 2019-05-09 CN CN201920666095.9U patent/CN210151972U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676908A (en) * | 2020-06-18 | 2020-09-18 | 中国水利水电科学研究院 | Concrete panel tensile joint and peripheral joint surface water stop structure and construction method thereof |
| CN112342876A (en) * | 2020-10-30 | 2021-02-09 | 中国五冶集团有限公司 | Retaining structure for foam concrete pouring rapid partition construction and construction method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 Termination date: 20210509 |