CN114941348A - Construction joint waterproof structure without water stop belt at structural interface and construction method thereof - Google Patents
Construction joint waterproof structure without water stop belt at structural interface and construction method thereof Download PDFInfo
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- CN114941348A CN114941348A CN202210614099.9A CN202210614099A CN114941348A CN 114941348 A CN114941348 A CN 114941348A CN 202210614099 A CN202210614099 A CN 202210614099A CN 114941348 A CN114941348 A CN 114941348A
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- pipe
- grouting
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- construction joint
- waterproof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The invention discloses a construction joint waterproof structure without a water stop belt at a structural joint and a construction method thereof, wherein the structure comprises the following steps: the grouting pipe is arranged on the concrete surface of the construction joint, and connecting pipes are sleeved outside two ends of the grouting pipe respectively; the plurality of grouting pipes are connected end to end through fixing pieces; one end of the grouting guide pipe is connected with the outer end of the connecting pipe, and the other end of the grouting guide pipe extends out of the construction joint; and the water stop strip is arranged in the groove on the concrete surface of the construction joint and is positioned on two outer sides of the grouting pipe. By the aid of the waterproof construction measures, waterproof materials such as water stop belts and the like can be not left at the construction joints of the underground structure, subsequent structural construction is connected with the waterproof structures of the existing structures and the weak parts of the construction joints, effects of no leakage and no wet stain of the construction joints of the interfaces are achieved through the grouting measures after grouting pipes, and the problems that the construction joints are hard connected, waterproof cannot be connected and water seepage occurs after the structural connection are solved.
Description
Technical Field
The invention relates to the technical field of waterproof construction, in particular to a construction joint waterproof structure without a water stop belt at a structure interface and a construction method thereof.
Background
For the underground structure interface without water stopping measures at the construction joint, water leakage is often serious, the method adopts grouting for plugging treatment, but the method needs drilling and grouting nozzles on two sides of the construction joint of the structure for grouting, the method has poor plugging effect due to serious water seepage at the construction joint, and generally has good effect after grouting but the foamed colloid in the joint can seep water again after long time, so that the plugging effect cannot be achieved. Meanwhile, the grouting colloid falls along the construction joint, so that the polluted concrete wall is not easy to clean, the wall surface needs to be drilled, and the surface of the concrete wall surface is damaged.
Disclosure of Invention
In order to solve the problems, the invention provides a construction joint waterproof structure without a water stop belt at a structure interface and a construction method thereof, and solves the problems that the construction joint is hard to connect, waterproof cannot be connected and water seepage occurs after the structure is connected.
In order to realize the purpose, the invention adopts the technical scheme that:
a construction joint waterproof construction for a waterstop-free structure interface, comprising:
the grouting pipe is arranged on the concrete surface of the construction joint, and connecting pipes are sleeved outside two ends of the grouting pipe respectively; the grouting pipes are connected end to end through fixing pieces, each fixing piece comprises a horizontally placed column casing and a flat plate horizontally arranged at the bottom of the column casing, the flat plates are fixedly arranged on concrete, and the end parts of the two grouting pipes are adjacent and are arranged in the column casing;
one end of the grouting guide pipe is connected with the outer end of the connecting pipe, and the other end of the grouting guide pipe extends out of the construction joint;
and the water stop strip is arranged in the groove on the surface of the concrete of the construction joint and is positioned on two outer sides of the grouting pipe.
As an embodiment, the grouting pipe comprises a spring pipe, a specially-made non-woven fabric arranged on the outer side of the spring pipe and a nylon thread woven sleeve arranged on the outer side of the specially-made non-woven fabric, the specially-made non-woven fabric is tightly attached to the outer side of the spring pipe, and the nylon thread woven sleeve is tightly attached to the outer side of the specially-made non-woven fabric.
As an embodiment, the grouting pipe comprises a grout guide pipe, a hard plastic core pipe arranged at the outer end of the grout guide pipe, chloroprene rubber arranged on the outer side of the hard plastic core pipe and a nylon wire woven sleeve arranged on the outer side of the chloroprene rubber, wherein a plurality of grout outlet holes are formed in the side surface of the hard plastic core pipe, and the grout guide pipe is communicated with the chloroprene rubber through the grout outlet holes.
As an embodiment, the hard plastic core tube has four and is respectively arranged on the outer side of the slurry guide tube in a circular array.
In one embodiment, the hard plastic core tube is provided with a plurality of protruding parts on the outer side surface, and the protruding parts are embedded in the inner side part of the chloroprene rubber.
A method of constructing a construction joint waterproofing structure as described above for a waterstop-free construction joint at a structural interface, comprising the steps of:
coating a cement-based capillary crystalline waterproof material on the concrete surface of the construction joint;
installing water stop strips in grooves reserved or chiseled on two sides of the concrete surface of the construction joint;
fixedly mounting a plurality of grouting pipes in the middle of the concrete surface of the construction joint by adopting a fixing piece;
and connecting pipes are sleeved outside the two ends of the grouting pipe, one end of the grouting pipe is connected with the outer end of the connecting pipe, and the other end of the grouting pipe extends out of the construction joint.
As an embodiment, when the cement-based permeable crystalline waterproof material is coated, the permeable crystalline waterproof material is uniformly coated in two ways, the coating direction between the two ways is vertical, and after each way is coated, maintenance is carried out.
As an embodiment, the water stopping strip is stuck in a groove of a construction joint by adopting an adhesive, and the part which is stuck infirm and hollowly is fixed by a cement nail.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
to the special construction of butt joint existing pipe gallery construction joints etc. no waterstop construction joint, special positions such as structural interface adopt the waterproof constructional measure of two ways water swelling sealing rod + full section slip casting pipe, joint department applies paint cement base infiltration crystallization processing and pre-buried stereoplasm rubber skeleton slip casting pipe with a brush, waterproof the carrying out multichannel enhancement to this department construction joint, rethread construction joint back slip casting processing technique has solved the waterproof unable problem of connecting, the infiltration of appearing in construction joint department after the piping lane is plugged into.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a construction joint waterproofing structure according to an embodiment of the present invention.
FIG. 2 is an installation view of a water-swellable stop in an embodiment of the invention.
FIG. 3 is a perspective view of a construction joint waterproofing structure according to an embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view of a first grouting pipe according to an embodiment of the present invention.
FIG. 5 is a schematic cross-sectional view of a second grouting pipe according to an embodiment of the present invention.
Wherein the reference numerals are: 1-grouting pipe; 11-a fixing member; 2-water stop strip; 3-grouting guide pipe; 4-connecting pipe; 5-nylon thread braiding sleeve; 6. specially-made non-woven fabrics; 7-a spring tube; 8-hard plastic core tube; 9-a slurry guide pipe; 10-slurry outlet; 11-neoprene rubber; 12-grooves.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The construction joint waterproof structure is suitable for the special condition that a middle-buried water stop belt cannot be arranged at a structural construction joint, no pre-buried waterproof measure is arranged at the construction joint or a deformation joint, a new structure needs to be connected after the structure is completed, waterproof measures need to be additionally arranged at an interface, the water stop belt cannot be arranged for waterproofing, and a special part waterproof detail structure is adopted at the new structure.
Referring to fig. 1 to 4, the embodiment provides a construction joint waterproof structure without a waterstop for a structural interface, which includes grouting pipes 1 arranged in a construction joint, connecting pipes 4 respectively arranged at two ends of the grouting pipes 1, and grouting guide pipes 3 with one ends connected with outer ends of the connecting pipes 4, wherein the other ends of the grouting guide pipes 3 extend out of the construction joint, the grouting pipes 1 are connected end to end through fixing members 11, and the connecting pipes 4 are sleeved at the ends of the grouting pipes 1; the mounting 11 includes that the column casing that the level was placed and the level set up the flat board in the column casing bottom, and the flat board is fixed to be set up on the concrete, and two slip casting pipe end portions are adjacent and all set up in the column casing, and wherein, anchors such as dull and stereotyped accessible screw or screw rod on the concrete. Two sealing strips 2 are arranged in the groove 12 on the concrete surface of the construction joint and are positioned at two outer sides of the grouting pipe 1, and the sealing strips 2 adopt water-swelling sealing strips.
Referring to fig. 4, the grouting pipe 1 of the present embodiment includes a spring pipe 7, a special non-woven fabric 6 disposed outside the spring pipe 7, and a nylon thread knitted jacket 5 disposed outside the special non-woven fabric 6, wherein the special non-woven fabric 6 is disposed to cling to the outside of the spring pipe 7, and the nylon thread knitted jacket 5 is disposed to cling to the outside of the special non-woven fabric 6. This kind of slip casting pipe adopts flexible material, and built-in spring pipe makes the slip casting pipe elasticity better, can change its straightness during the installation.
Further, referring to fig. 5, another grouting pipe form is provided, in which the grouting pipe 1 includes a grout guide pipe 9, a hard plastic core pipe 8 disposed at an outer end of the grout guide pipe 9, a chloroprene rubber 11 disposed at an outer side of the hard plastic core pipe 8, and a nylon thread woven sleeve disposed at an outer side of the chloroprene rubber 11, a plurality of grout outlet holes 10 are disposed at a side surface of the hard plastic core pipe 8, and the grout guide pipe 9 is communicated with the chloroprene rubber 11 through the grout outlet holes 10; the hard plastic core tube 8 is provided with four and is respectively embedded outside the slurry guide tube 9 in a circular array. This kind of slip casting pipe belongs to lamella formula slip casting pipe, compares preceding slip casting pipe, through the number that changes the stereoplasm plastic tubing, can adjust out the size in thick liquid hole, increases grouting pressure. Furthermore, the outer side surface of the hard plastic core tube 8 is provided with a plurality of protruding parts, and the protruding parts are embedded in the inner side part of the chloroprene rubber 11.
The waterproof structure of the construction joint is a waterproof structural measure of a double-channel water-swelling water stop strip and a full-section grouting pipe, wherein the water-swelling rubber water stop strip is a putty type product, and the section size is 30mm multiplied by 20 mm. The water stop strips 2 are positioned on the surface of the construction joint and are respectively 100mm away from the upstream surface and the downstream surface. The water stop bar is embedded into the concrete groove 12 of the construction joint, and the size of the structural open slot is 40mm multiplied by 20 mm.
The grouting pipe 1 is positioned in the middle of the wall body, a spring pipe of DN25 is adopted, the outside of the pipeline is wrapped by non-woven fabrics, the distance between grouting guide pipes is 5-6 m, and the position of the back surface of the grouting hole retention structure is 200-300mm away from the construction joint. Every two sections of grouting conduits are lapped by 20-30 mm, the grouting conduits are fixed by omega-shaped veneers, and the fixed distance is 200-300 mm.
The construction process of the construction joint waterproof structure in the embodiment is as follows:
(1) the method comprises the steps of firstly treating the surface of a construction joint base layer of an existing structure interface, roughening and cleaning the surface of a construction joint according to the standard requirement, wherein the surface is solid and clean and has no floating ash, floating slurry, oil stain, alkali resistance, peeling and loose parts. The surface of the base layer is free from accumulated water, and the surface of the base layer is kept wet before the waterproof coating is coated.
(2) The concrete surface of the construction joint is coated with a cement-based capillary crystalline waterproof material, and the surface consumption of the construction joint is 1.5kg/m 2 . When the cement-based permeable crystalline waterproof material is coated, the waterproof material is uniformly coated in two ways,the brushing direction between the two channels is vertical, and proper maintenance is required after each brushing. If the base layer is dry, the base layer should be fully wetted; if the environmental temperature is too high, the coating dries too fast, which causes the coating material to lack water, and the hydration reaction is not completely carried out.
(3) And water-swelling water stop strips 2 are arranged at two sides. The water stop strip 2 is arranged in a reserved groove 12 on the surface of the construction joint, if the groove is not reserved, a groove with the size of 40mm multiplied by 20mm is dug along the length direction of the construction joint, the surface, the bottom and the side surface of the construction joint are all solid, and the groove is ensured to be flat and clean without oil stain, loose, sand falling, peeling and the like. The water stop strip 2 is adhered in the construction joint groove 12 by a special adhesive, the adhesion is firm, the water stop strip is tightly adhered to the ground of the base layer, and the part which is not firmly adhered and hollows is fixed by cement nails. The water stop strip 12 is in butt joint, the butt joint part is tightly attached, and the edge rising phenomenon cannot occur. The portion that has expanded in the presence of water should be cut off and the water stop strip reinstalled.
(4) The grouting pipes 1, the connecting pipes 4 and the grouting guide pipes 3 are installed, the circumferential distance of the pre-buried grouting pipes is about 2-3 meters, and cement paste, superfine cement paste or other organic slurry can be injected after the grouting pipes are manufactured.
The grouting pipe refers to a full-section grouting pipe, and the open end of the grouting pipe is temporarily blocked. The grouting material should be selected from inorganic grouting materials such as self-leveling cement, superfine cement and the like; when leakage has occurred, chemical grouting materials such as epoxy, polyurethane, acrylic, and the like may be used. Grouting is carried out after the structure construction is finished and the precipitation is stopped; and all the pre-embedded grouting pipes are subjected to grouting plugging. The grouting should be slowed down by the low pressure of the grouting liquid from the lowest grouting end.
The grouting material no longer flows in and the pressure gauge shows no or almost little pressure loss, which should be maintained for at least 2 minutes.
By the aid of the waterproof construction measures, waterproof materials such as water stop belts and the like can be kept at the construction joint of the underground structure interface, subsequent structural construction is connected with the waterproof structure of the existing structure and the weak part of the construction joint, effects of no leakage and no wet stain of the interface construction joint are achieved by the post-grouting measures of the grouting pipes, and the problems of hard connection, water prevention, incapability of connection and water seepage of the construction joint after the structural connection are solved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (8)
1. A construction joint waterproof construction for a waterstop-free structure interface, comprising:
the grouting pipe is arranged on the concrete surface of the construction joint, and connecting pipes are sleeved outside two ends of the grouting pipe respectively; the grouting pipes are connected end to end through fixing pieces, each fixing piece comprises a horizontally placed column casing and a flat plate horizontally arranged at the bottom of the column casing, the flat plates are fixedly arranged on concrete, and the end parts of the two grouting pipes are adjacent and are arranged in the column casing;
one end of the grouting guide pipe is connected with the outer end of the connecting pipe, and the other end of the grouting guide pipe extends out of the construction joint;
and the water stop strip is arranged in the groove on the surface of the concrete of the construction joint and is positioned on two outer sides of the grouting pipe.
2. A construction joint waterproof construction without a waterstop at a structure interface as claimed in claim 1, wherein the grouting pipe comprises a spring pipe, a special non-woven fabric arranged outside the spring pipe and a nylon thread woven sleeve arranged outside the special non-woven fabric, the special non-woven fabric is tightly attached to the outside of the spring pipe, and the nylon thread woven sleeve is tightly attached to the outside of the special non-woven fabric.
3. A construction joint waterproof construction for no waterstop at structure interface as claimed in claim 1, characterized in that, the slip casting pipe includes leads thick liquid pipe, sets up in lead the rigid plastic core pipe of thick liquid pipe outer end, set up in the chloroprene rubber in the rigid plastic core pipe outside and set up in the nylon wire woven sleeve in the chloroprene rubber outside, rigid plastic core pipe side is provided with a plurality of grout outlet, lead thick liquid pipe pass through grout outlet with the chloroprene rubber intercommunication.
4. A construction joint waterproofing structure for a waterstop-free structure interface according to claim 3, wherein the rigid plastic core tube has four and is respectively arranged in a circular array on the outer side of the grout guide tube.
5. A construction joint waterproofing structure for a waterstop-free structure interface according to claim 4, wherein the hard plastic core tube outer side is provided with a plurality of protrusions embedded in the neoprene inner side.
6. A construction method for a construction joint waterproof structure without a water stop at a structure interface according to any one of claims 1 to 5, comprising the steps of:
coating a cement-based capillary crystalline waterproof material on the concrete surface of the construction joint;
installing water stop strips in grooves reserved or chiseled on two sides of the concrete surface of the construction joint;
fixedly mounting a plurality of grouting pipes in the middle of the concrete surface of the construction joint by adopting fixing pieces;
and connecting pipes are sleeved outside the two ends of the grouting pipe, one end of the grouting pipe is connected with the outer end of the connecting pipe, and the other end of the grouting pipe extends out of the construction joint.
7. The construction method according to claim 6, wherein the cement-based permeable crystalline waterproof material is coated in two uniform coating directions perpendicular to each other, and the maintenance is performed after each coating.
8. The construction method as claimed in claim 6, wherein the water stopping strip is adhered in the groove of the construction joint by adhesive, and the part which is not firmly adhered and is hollow is fixed by cement nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614099.9A CN114941348A (en) | 2022-05-31 | 2022-05-31 | Construction joint waterproof structure without water stop belt at structural interface and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614099.9A CN114941348A (en) | 2022-05-31 | 2022-05-31 | Construction joint waterproof structure without water stop belt at structural interface and construction method thereof |
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| CN114941348A true CN114941348A (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210614099.9A Pending CN114941348A (en) | 2022-05-31 | 2022-05-31 | Construction joint waterproof structure without water stop belt at structural interface and construction method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207987983U (en) * | 2017-12-31 | 2018-10-19 | 中铁十八局集团第五工程有限公司 | A kind of waterproof construction being used for underground engineering main body construction seam and post-cast strip |
| CN208533580U (en) * | 2018-04-16 | 2019-02-22 | 中国铁路设计集团有限公司 | A kind of water proof structure of Underground Construction seam |
| CN209100059U (en) * | 2018-11-23 | 2019-07-12 | 中铁二十局集团第二工程有限公司 | Subway station side wall construction joint water proof structure based on Grouting Pipe |
| CN110219673A (en) * | 2019-06-25 | 2019-09-10 | 中建八局第一建设有限公司 | A kind of Full-face pouring pipe device |
-
2022
- 2022-05-31 CN CN202210614099.9A patent/CN114941348A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207987983U (en) * | 2017-12-31 | 2018-10-19 | 中铁十八局集团第五工程有限公司 | A kind of waterproof construction being used for underground engineering main body construction seam and post-cast strip |
| CN208533580U (en) * | 2018-04-16 | 2019-02-22 | 中国铁路设计集团有限公司 | A kind of water proof structure of Underground Construction seam |
| CN209100059U (en) * | 2018-11-23 | 2019-07-12 | 中铁二十局集团第二工程有限公司 | Subway station side wall construction joint water proof structure based on Grouting Pipe |
| CN110219673A (en) * | 2019-06-25 | 2019-09-10 | 中建八局第一建设有限公司 | A kind of Full-face pouring pipe device |
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