CN116537112A - Water stop construction method for repairing structural joint failure - Google Patents
Water stop construction method for repairing structural joint failure Download PDFInfo
- Publication number
- CN116537112A CN116537112A CN202310746845.4A CN202310746845A CN116537112A CN 116537112 A CN116537112 A CN 116537112A CN 202310746845 A CN202310746845 A CN 202310746845A CN 116537112 A CN116537112 A CN 116537112A
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- Prior art keywords
- water
- structural joint
- joint
- film bag
- water stop
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 27
- 239000010426 asphalt Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000007569 slipcasting Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a water stop construction method for repairing structural joint failure, which comprises the following steps: selecting a plurality of hole sites at intervals along the longitudinal extending direction of the structural joint; vertical holes are formed in the hole sites from top to bottom, and the diameter of each vertical hole is 3-5cm wider than the gap of the structural joint; inserting a water-stopping film bag into the vertical hole, wherein the diameter of the water-stopping film bag is the same as that of the vertical hole, and a grouting pipe is arranged in the water-stopping film bag; grouting the water-stopping film bag from the bottom through a grouting pipe and filling the whole water-stopping film bag, so that the water-stopping film bag expands to support the structures on two sides, and the slurry adopts double-component high-strength reaction polyurethane; grouting filling is carried out in the gap of the structural joint between two adjacent water stop film bags with grouting completed, and grouting is carried out from the bottom of the structural joint until the gap space of the whole structural joint is filled. The invention has the advantages that: through steps such as going vertical pore-forming, inserting water-stop film bag, slip casting, can prevent vertical expansion joint and movement joint's seepage effectively, reduce cost of maintenance and risk.
Description
Technical Field
The invention belongs to the technical field of engineering water stop, and particularly relates to a water stop construction method for repairing structural joint failure.
Background
The vertical expansion joint or the deformation joint belongs to one of the structural joints, and the waterproof treatment is an important problem to be solved in engineering construction.
In hydraulic engineering, a gate wall and a wing wall are arranged for guaranteeing stability of roadbed slopes at two sides of a culvert or a gravity type bridge abutment and playing a role in guiding a river. The gate wall and the wing wall are influenced by factors such as temperature change, foundation settlement, load action and the like, and can deform to a certain extent. To accommodate this deformation, a vertical expansion joint is typically provided between the lock wall and the wing wall. The vertical expansion joint is a structural joint, and the position, the width, the depth and the filling material of the structural joint are all determined according to the design requirement. The main function of the vertical expansion joint is to allow the relative displacement between the gate wall and the wing wall, reduce stress concentration and prevent structural cracking. However, the vertical expansion joint also causes leakage of water flow, affects the waterproof performance of the gate wall and the wing wall, and even during rising of water level, a large amount of river water, seawater and the like can enter the rear part of the gate wall along the vertical expansion joint in a large amount, endangering the structural safety and causing loss.
The main reasons for the water leakage of the vertical expansion joint between the gate wall and the wing wall are as follows: (1) When the expansion joint is constructed, the waterproof material in the joint is not filled densely or fails, so that the waterproof effect is reduced or fails; (2) The expansion joint is subjected to external force or internal force to generate cracks or deformation, so that the original waterproof material is damaged or falls off; (3) The expansion joint is corroded by seawater, chemically corroded or aged, so that the performance of the water-stopping material is reduced or the water-stopping material is invalid.
Station connecting channels are important components of subway stations connecting different lines or different areas, and are usually located underground and affected by groundwater and soil pressure. The deformation joints of the station connecting channels are gaps arranged for adapting to the temperature change, sedimentation deformation and earthquake action of the structure, and the gaps play roles of buffering and damping in the structure. However, the deformation joint is also one of the main ways of water leakage, and if the waterproof treatment of the deformation joint is improper or fails, the water leakage phenomenon occurs in the station connecting channel, so that the use safety and the comfort of the station are affected.
The reason for the water leakage of the deformation joint of the station communicating channel mainly comprises the following aspects: (1) The performance of the water stop belt or the water stop glue material at the deformation joint is not up to standard or is not installed in place, so that the water stop effect is poor or fails; (2) The concrete at the deformation joint is not compact or has the defects of honeycomb pitting surface and the like, so that the concrete at the two sides of the deformation joint has water leakage holes; (3) The deformation joint is subjected to external force or internal force to generate cracks or openings, so that the water stopping material is damaged or falls off; (4) The deformation joint is subjected to chemical erosion or aging action to cause the performance of the water stopping material to be reduced or to be invalid; (5) The deformation joint is not maintained according to the design requirement, so that the water stopping material is damaged or fails.
In the prior art, the common plugging waterproof methods for the vertical expansion joints and the deformation joints mainly comprise the following steps:
filling method: and flexible materials such as rubber, asphalt, polyurethane and the like are filled in the vertical expansion joint, so that the vertical expansion joint is tightly attached to a structure, and a water stopping effect is achieved. The method is simple to operate and low in cost, but in actual construction, the expansion joint is deeper, filling is difficult, filling materials are easy to age, deform and fall off, and the water stopping effect is not durable.
Grouting: and (3) drilling and grouting are carried out in or near the vertical expansion joint, and grouting materials can be cement slurry, chemical slurry or mixed slurry and the like, so that the grouting materials fill gaps or cracks in the vertical expansion joint and play a role in stopping water. The method can improve the strength and rigidity of the structure, but the grouting is easy to run off and not full because the two sides of the expansion joint are not limited, the grouting material is easy to shrink, crack and fall off, and the grouting holes can also influence the beauty of the structure.
Plugging method: the two sides of the vertical expansion joint are provided with the plugging plates or the plugging belts, and the plugging plates or the plugging belts can be made of metal, plastic or other materials and are fixedly connected or movably connected with the structural objects to play a role in water stopping. The method can adapt to the deformation of the structure, but the plugging plate or the plugging belt is easy to damage, fall off and leak, and the water stopping effect is unreliable.
In summary, the existing construction methods have certain limitations and disadvantages, can not effectively solve the problem of leakage of the vertical expansion joint and the deformation joint, have unsatisfactory construction effects, and are specifically expressed in the following aspects:
(1) the expansion joint or the deformation joint is deeper, so that the expansion joint or the deformation joint is difficult to fill during construction, and the construction difficulty is high;
(2) during grouting construction, the two sides of the expansion joint are not limited, and grouting is easy to run off and not full;
(3) the traditional filling or grouting material has the problems of easy aging, deformation, shrinkage, cracking, falling off and the like;
(4) the externally attached plugging plate or the plugging belt is easy to damage, fall off, leak and have unreliable water stopping effect.
Therefore, the construction method for plugging and waterproofing of the vertical expansion joint between the gate wall and the wing wall and the deformation joint in the station connecting channel is not stable, reliable and effective for a long time.
Disclosure of Invention
According to the defect of the prior art, the invention provides a water stop construction method for repairing structural joint failure, which comprises the steps of arranging a plurality of vertical holes to the bottom at intervals on the structural joint, arranging water stop film bags in the vertical holes and grouting to fill the whole vertical holes, and simultaneously, grouting in a structural joint gap cavity between adjacent water stop film bags to repair the structural joint, so that the integral water stop of the structural joint is realized.
The invention is realized by the following technical scheme:
the water stop construction method for repairing the failure of the structural joint is characterized by comprising the following steps of: selecting a plurality of hole sites at intervals along the longitudinal extending direction of the structural joint; vertically forming holes from the top of the structural joint to the bottommost part of the structural joint by adopting a water drill downwards at each hole site, wherein the diameter of each vertical hole is 3-5cm wider than the gap of the structural joint; inserting a water stop film bag into the vertical hole, wherein the diameter of the water stop film bag is the same as that of the vertical hole, and a grouting pipe is arranged in the water stop film bag; grouting the water-stopping film bag from the bottom through the grouting pipe and filling the whole water-stopping film bag, so that the water-stopping film bag expands to support the structures on two sides, and the slurry adopts double-component high-strength reaction polyurethane; grouting filling is carried out in the gap of the structural joint between two adjacent water stop film bags, and grouting is carried out from the bottom of the structural joint until the gap space of the whole structural joint is filled.
The structure seam is a vertical expansion seam or a deformation seam, the vertical expansion seam is positioned between the gate walls, and the deformation seam is positioned between the station communicating channels.
At least two vertical holes are formed in the structural joint, the diameters of the vertical holes are 8-15cm, and the hole spacing between every two adjacent vertical holes is 80-150 cm.
The bag length of the water stopping film bag is 15cm larger than the hole depth of the vertical hole.
The water-stopping film bag is a flexible bag body made of non-woven fabrics or woven fabrics.
The two-component high-strength reactive polyurethane consists of isocyanate and polyol.
After filling the gap space of the structural joint, cutting off the water-stop film bag and the grouting pipe part higher than the top surface of the structural joint by using a handheld cutting machine, covering a waterproof layer on the top surface of the structural joint after cutting off, adhering or fixing two sides of the waterproof layer with structures on two sides of the structural joint, wherein the waterproof layer is one of silicone, asphalt coiled materials and plastic films.
The structure seam is the vertical expansion seam, and the water stop is arranged on the vertical expansion seam on one side of the upstream surface, and is made of metal or plastic.
The invention has the advantages that:
(1) The expansion joint and the deformation joint structure are perforated and embedded with water-stopping film bags, the two-component high-strength reaction polyurethane is used as grouting material, vertical water-stopping structures are formed on the two sides of the expansion joint and the deformation joint structure, the material reacts rapidly, the film bags are expanded and propped against the perforated grooves, and a high-strength vertical water-stopping body is formed with the original structure; then, pouring high-strength waterproof double-component polyurethane into the two vertical water stopping bodies to form a water stopping structure, wherein 1 or more water stopping structures can be arranged in the expansion joint;
(2) Through going steps such as vertical pore-forming, inserting water-stop film bag, slip casting, can prevent the seepage of vertical expansion joint and movement joint effectively, improve the structural stability and the functional performance of lock wall and wing wall, reduce cost of maintenance and risk.
Drawings
FIG. 1 is a schematic view of a water stop structure in a vertical section of the present invention;
FIG. 2 is a plan view of a water stopping structure according to the present invention;
FIG. 3 is a schematic vertical section of a water-break film pouch of the present invention;
FIG. 4 is a schematic view of the structure of the water-stopping film bag of the present invention.
Description of the embodiments
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
as shown in fig. 1-4, the labels in the figures are respectively: dykes and dams 1, stagnant water membrane bag 2, slip casting pipe 3, slip casting body 31, quick-operation joint 32, slip casting packing body 4, lock wall 5, structural joint 6.
Examples: as shown in fig. 1-4, the embodiment specifically relates to a water stop construction method for repairing failure of structural joints, the structural joints are vertical expansion joints between gate walls 5 in the water conservancy operation process, a dam 1 is arranged on an upstream surface of the gate walls 5, and the water stop construction method comprises the following steps:
(S1) selecting a plurality of hole sites at intervals along the longitudinal extension direction of the structural joint 6, as shown in fig. 1 and 2, in the embodiment, selecting five hole sites in total, wherein one hole site is respectively distributed at two ends of the structural joint 6, and the other three hole sites are distributed in the structural joint 6 at intervals; the water drill is adopted to drill vertical holes on all hole sites in sequence, vertical holes are drilled downwards from the top of the structural joint 6 until reaching the bottom of the structural joint 6, the diameter of the vertical holes is usually 8-15cm, the vertical holes are 3-5cm wider than the width of the structural joint 6, and the hole spacing between the vertical holes is 80-150 cm.
(S2) sequentially inserting the water-stop film bags 2 into the bottoms of the vertical holes, wherein the diameters of the water-stop film bags 2 are identical to the diameters of the vertical holes, the length of the water-stop film bags 2 is larger than the depth of the vertical holes by about 15cm, grouting pipes 3 are inserted into the water-stop film bags 2, each grouting pipe 3 comprises a grouting pipe body 31 and a quick connector 32, the grouting pipe body 31 stretches into the lowest part of the water-stop film bags 2, and the quick connector 32 is located at the upper end of the grouting pipe body 31 and is used for being connected with an external grouting system.
Wherein, the water-stopping film bag 2 is a flexible bag body made of non-woven fabrics or woven fabrics, and has the characteristics of water permeability, tensile property, aging resistance and the like.
(S3) injecting slurry into the bottom of the water-stopping film bag 2 through the grouting pipe 3 and filling the whole water-stopping film bag 2, so that the water-stopping film bag 2 expands to prop against the gate walls 5 on two sides to form two-side plugs; grouting of each water-stop film bag 2 is completed in sequence; the slurry adopts double-component high-strength reaction polyurethane, and the material reacts rapidly and can expand rapidly until the vertical holes are blocked.
The double-component high-strength reactive polyurethane is a double-component system composed of isocyanate and polyol, and has the characteristics of light weight, early strength, durability, low permeability, no reaction with water, bonding with soil, forming a composite waterproof layer and the like, and the material has high bonding strength and is densely and fully filled.
And (S4) after the grouting operation of each water-stopping film bag 2 is completed, grouting is started to perform grouting on the gap cavities of the structural joints 6 between the adjacent water-stopping film bags 2, the slurry is also prepared from the two-component high-strength reactive polyurethane, and the grouting is started from the bottom until the whole cavity is filled with the material, so that the grouting filler 4 is formed by rapid reaction expansion in the gap cavities of the structural joints 6. The grouting filler 4 and each water-stopping film bag 2 form a water-stopping structure together.
The water stop plate or water stop belt is arranged on the structural joint 6 at one side of the upstream surface and can be made of metal, plastic or other materials, and is fixedly connected or movably connected with the gate wall 5 to play a role in long-term water stop.
And (S5) cutting off the water stop film bag 2 and the grouting pipe 3 which are higher than the top surface of the structural joint 6 by using a handheld cutting machine, covering a waterproof layer on the top surface of the structural joint 6 after cutting off to perform sealing protection, and performing long-term water stop function, wherein the waterproof layer can be made of silicone, asphalt coiled materials, plastic films or other materials, and two side edges of the waterproof layer are fixedly connected or movably connected with the top surfaces of the gate walls 5 on two sides.
The beneficial effects of this embodiment lie in: the construction method adopts a water drill to vertically form holes, a water-stop film bag is inserted into the holes and grouting is carried out in the film bag, the film bag is inflated to form plugs at two sides, and then the two-component reaction inflated polyurethane is fully filled from the bottom grouting. The construction method adopts the double-component high-strength reaction polyurethane as grouting material, has the characteristics of swelling when meeting water, bonding with soil body, forming a composite waterproof layer and the like, can effectively prevent leakage of vertical expansion joints and deformation joints, improves the structural stability and functional performance of a gate wall and a wing wall, reduces maintenance cost and risk, and has innovation, practicability and economy.
Claims (8)
1. The water stop construction method for repairing the failure of the structural joint is characterized by comprising the following steps of: selecting a plurality of hole sites at intervals along the longitudinal extending direction of the structural joint; vertically forming holes from the top of the structural joint to the bottommost part of the structural joint by adopting a water drill downwards at each hole site, wherein the diameter of each vertical hole is 3-5cm wider than the gap of the structural joint; inserting a water stop film bag into the vertical hole, wherein the diameter of the water stop film bag is the same as that of the vertical hole, and a grouting pipe is arranged in the water stop film bag; grouting the water-stopping film bag from the bottom through the grouting pipe and filling the whole water-stopping film bag, so that the water-stopping film bag expands to support the structures on two sides, and the slurry adopts double-component high-strength reaction polyurethane; grouting filling is carried out in the gap of the structural joint between two adjacent water stop film bags, and grouting is carried out from the bottom of the structural joint until the gap space of the whole structural joint is filled.
2. The water stop construction method for repairing the failure of the structural joint according to claim 1, wherein the structural joint is a vertical expansion joint or a deformation joint, the vertical expansion joint is positioned between gate walls, and the deformation joint is positioned between station communicating channels.
3. The water stop construction method for repairing failure of a structural joint according to claim 1, wherein at least two vertical holes are formed in the structural joint, the diameters of the vertical holes are 8-15cm, and the hole spacing between every two adjacent vertical holes is 80-150 cm.
4. A water stopping construction method for repairing a structural joint failure according to claim 1, wherein the bag length of the water stopping film bag is 15cm greater than the hole depth of the vertical hole.
5. The water stop construction method for repairing a structural joint failure according to claim 1, wherein the water stop film bag is a flexible bag body made of non-woven fabric or woven cloth.
6. A water stopping construction method for repairing a structural joint failure according to claim 1, wherein said two-component high-strength reactive polyurethane is composed of isocyanate and polyol.
7. The water stop construction method for repairing a structural joint failure according to claim 1, wherein after filling the gap space of the structural joint, the water stop film bag and the grouting pipe part which are higher than the top surface of the structural joint are cut off by using a handheld cutting machine, waterproof layers are covered on the top surface of the structural joint after cutting, two sides of the waterproof layers are adhered or fixed with structures on two sides of the structural joint, and the waterproof layers are one of silicone, asphalt coiled materials and plastic films.
8. The water stop construction method for repairing the failure of the structural joint according to claim 2, wherein the structural joint is the vertical expansion joint, a water stop belt is arranged on the vertical expansion joint on the upstream surface side, and the water stop belt is metal or plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310746845.4A CN116537112A (en) | 2023-06-25 | 2023-06-25 | Water stop construction method for repairing structural joint failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310746845.4A CN116537112A (en) | 2023-06-25 | 2023-06-25 | Water stop construction method for repairing structural joint failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116537112A true CN116537112A (en) | 2023-08-04 |
Family
ID=87445547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310746845.4A Pending CN116537112A (en) | 2023-06-25 | 2023-06-25 | Water stop construction method for repairing structural joint failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116537112A (en) |
-
2023
- 2023-06-25 CN CN202310746845.4A patent/CN116537112A/en active Pending
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Effective date of registration: 20240122 Address after: 200092 Siping Road 1239, Shanghai, Yangpu District Applicant after: TONGJI University Country or region after: China Applicant after: SHANGHAI SHEN YUAN GEOTECHNICAL CO.,LTD. Applicant after: China Railway Shanghai Bureau Group Co.,Ltd. Shanghai high speed railway infrastructure section Address before: 201804 Cao Road 4800, Shanghai, Jiading District Applicant before: TONGJI University Country or region before: China Applicant before: SHANGHAI SHEN YUAN GEOTECHNICAL CO.,LTD. |