CN113136898B - Repairing structure and repairing method for concrete construction joint - Google Patents
Repairing structure and repairing method for concrete construction joint Download PDFInfo
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- CN113136898B CN113136898B CN202110430743.2A CN202110430743A CN113136898B CN 113136898 B CN113136898 B CN 113136898B CN 202110430743 A CN202110430743 A CN 202110430743A CN 113136898 B CN113136898 B CN 113136898B
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- construction joint
- concrete construction
- tamping
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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
Abstract
The invention relates to a repairing structure and a repairing method of a concrete construction joint, wherein the concrete construction joint is formed by a first concrete structure surface and a second concrete structure surface which are oppositely spaced, the repairing structure is applied to a post-pouring structure surface of the concrete construction joint, and the repairing structure comprises: and the protective layer is attached to the outer side of the concrete construction joint and used for enhancing the tensile strength of the post-cast structural surface of the concrete construction joint. The concrete construction joint has the technical effects of increasing the tensile strength of the concrete construction joint and improving the stability of the whole concrete structure, and can be widely applied to the technical field of concrete construction.
Description
Technical Field
The invention relates to the technical field of concrete construction. More particularly, the present invention relates to a repair structure of a concrete construction joint and a repair method thereof.
Background
The horizontal construction joint is reserved in the concrete pouring structure body in the construction process under the restriction of the construction conditions, and the integrity of the concrete structure body is influenced to a great extent by the treatment measures of the construction joint, so that the strength of the concrete structure body is influenced. Particularly, the underground structure of the urban rail engineering has relatively high waterproof and impervious requirements and stricter treatment requirements on construction joints. The reasonable and effective construction method can effectively solve the adverse effect of the construction joint on the structural body, and has profound significance on the construction of constructional engineering.
Present construction joint is handled and is mostly adopted construction joint to bore a mao after applying paint cement base infiltration crystallization with a brush, these two kinds of measures play stagnant water effect and chisel hair thick inter-particle interlock again and remold structure body intensity inside the structure body, concrete itself does not have tensile property, can make new and old concrete joint seam department produce the crack under the pulling force effect, thereby influence the whole atress performance of structure, and simultaneously, crack department moisture can be along the partial infiltration structure body of construction joint, the reinforcing bar receives the corruption of moisture in the structure, when the structure is from giving birth to intensity greatly reduced, along with the corrosion of reinforcing bar, the structure body can increase gradually in construction joint department space, stagnant water ability reduces along with the increase in space gradually. This novel structure construction joint reinforcement method adopts new material to carry out the reinforcement to structure body construction joint outside on the basis that original construction joint was handled, both strengthened structure body self intensity, also made the seepage prevention performance also obtain very big improvement.
Disclosure of Invention
The invention aims to provide a repairing structure and a repairing method of a concrete construction joint with strong tensile toughness.
To achieve these objects and other advantages in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a repair structure for a concrete construction joint, the concrete construction joint being constructed of a first concrete structure face and a second concrete structure face which are spaced apart from each other, the repair structure being applied at a post-cast structure face of the concrete construction joint, the repair structure comprising:
and the protective layer is attached to the outer side of the first protective layer and used for enhancing the tensile strength of the post-cast structural surface of the concrete construction joint.
Preferably, the protective layer is a carbon fiber cloth.
Preferably, the carbon fiber cloth includes:
a sticking part which is stuck and covered on the outer side of the concrete construction joint;
the fixing part is integrally connected with the pasting part, and one side, far away from the pasting part, of the fixing part of the carbon fiber cloth extends to the first concrete structure surface or the second concrete structure surface for fixing;
the interval sets up the parting bead on the structural plane of fixed part, the parting bead is: the fixing portion of the carbon fiber cloth is divided into a plurality of structures at intervals.
A repairing method of a concrete construction joint is used for carrying out a reinforcing process on the concrete construction joint, and is characterized in that the reinforcing process comprises the following steps:
step S1, roughening opposite side walls of the first concrete structure surface and the second concrete structure surface which form the concrete construction joint;
s2, pouring the concrete construction joint to form a connecting body filled in the concrete construction joint;
a step S3 of performing a covering and curing process on the connection body in the step S2;
and S4, reinforcing the connecting body, the first concrete structure surface and the second concrete structure surface after the covering and curing process is finished in the step S3.
Preferably, in the step S2, the pouring of the concrete construction joint further includes adding compensation shrinkage concrete to the poured concrete during pouring.
Preferably, in the step S2, the temperature of the concrete in the concrete construction joint is monitored during the process of pouring the concrete construction joint.
Preferably, after the concrete construction joint is cast in step S2, the first heat-insulating layer is provided to maintain the temperature in the connection body within 25 ℃.
Preferably, a tamping procedure is required to be carried out in the concrete pouring process, and the tamping procedure comprises the following steps:
when concrete is poured in the concrete construction joint, a plurality of tamping point positions are arranged on a concrete structure in the concrete construction joint, and tamping is carried out, wherein the distance between each tamping point position is 300-400 mm.
Preferably, the tamping process further comprises: in the tamping process, the tamping tool is quickly contacted with the tamping point position, and then the tamping tool is pulled out at a constant speed in a time shorter than the time when the tamping tool is contacted with the tamping point position.
Preferably, in step S2, after the concrete pouring process is completed, a scraping and consolidating process is further included, where the scraping and consolidating process includes:
a1, scraping a poured surface according to a preset plane track by using a scraping tool;
and A2, pressing the poured pouring surface to be horizontal by using a compaction tool according to a preset plane track towards the direction of the pouring surface.
The invention at least comprises the following beneficial effects:
1. the repairing structure of the concrete construction joint can effectively overcome the self defects of the structure caused by the construction joint, and greatly improves the self strength, the overall performance and the anti-permeability performance of the structure; the repair structure includes, sets up the inoxidizing coating through the concrete layer outside after pouring the maintenance, is used for the reinforcing the tensile strength of pouring structural plane department behind the concrete construction joint, the inoxidizing coating is carbon cloth, can not make the inherent size of concrete take place obvious change in the middle of the process of using, and tensile strength is high, is applied to the reinforcement of various structure parts and repairs, for example: such as beams, plates, columns, roof trusses, piers, bridges, cylinders, construction joints of shells, and the like.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a front structural view of a repairing structure of a concrete construction joint according to the present invention;
FIG. 2 is a side view of a repair structure for a concrete construction joint according to the present invention;
description of reference numerals: 1. carbon fiber cloth; 2. concrete construction joint, 3, fixed part, 4, pasting part.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, the repairing structure for a concrete construction joint 2 according to the present invention includes a first concrete structure surface and a second concrete structure surface which are spaced from each other, and the first concrete structure and the second concrete structure include a pair of opposite concrete structures forming a gap, or a plurality of concrete structures forming a gap, wherein the repairing structure is applied to a post-cast structure surface of the concrete construction joint 2, and a protective layer is provided to enhance tensile strength of the post-cast structure surface of the concrete construction joint 2, and the protective layer may be made of carbon fiber cloth 1, and is wrapped and connected to the first concrete structure and the second concrete structure after the concrete construction joint 2 is completely cast, and wraps the concrete construction joint 2, thereby enhancing tensile strength of the concrete construction joint 2.
In another technical scheme, the concrete slump of the concrete pouring is 18-20 cm, and the adopted pouring gradient is 1: 6.
In another technical scheme, the protective layer is a carbon fiber cloth 1, a layer of carbon fiber cloth 1 (with a full length arrangement and a model of 300 g) with the width of 0.4m is adhered to a construction joint, and a layer of carbon fiber cloth 1 (with a full length arrangement) with the width of 0.2m is additionally arranged on the surface of the beam top; the upper part of the beam is additionally provided with a carbon fiber opening U-shaped hoop, the width of the hoop is 0.3m, the distance between the hoops is 0.5m, and the post-poured concrete is reinforced.
As shown in fig. 1 to 2, the carbon fiber cloth 1 includes:
a sticking part 4 stuck to the outside of the concrete construction joint 2 in a sticking covering manner;
the fixing part 3 is integrally connected with the pasting part 4, and one side, far away from the pasting part 4, of the fixing part 3 of the carbon fiber cloth 1 extends to the first concrete structure surface or the second concrete structure surface for fixing;
the interval sets up the parting bead on the structural plane of fixed part 3, the parting bead is: the fixing portion 3 of the carbon fiber cloth 1 is divided into a plurality of structures at intervals.
Further, one side of the fixing part 3 of the carbon fiber cloth 1, which is far away from the attaching part 4, extends to the first concrete structure surface or the second concrete structure surface for fixing, and a plurality of structures of the fixing part 3 are distributed in a cross shape.
A repairing method of a concrete construction joint 2 is used for carrying out a reinforcing process on the concrete construction joint 2, and is characterized in that the reinforcing process comprises the following steps:
step S1, conducting chiseling treatment on opposite side walls of the first concrete structure surface and the second concrete structure surface which form the concrete construction joint 2;
s2, pouring the concrete construction joint 2 to form a connecting body filled in the concrete construction joint 2;
step S3, performing a covering and curing process on the connection body in the step S2;
and S4, reinforcing the connecting body, the first concrete structure surface and the second concrete structure surface after the covering and curing process is finished in the step S3.
In another technical scheme, in the step S2, the pouring of the concrete construction joint 2 further includes adding compensation shrinkage concrete into the poured concrete during pouring.
In another technical scheme, in the step S2, the temperature of the concrete in the concrete construction joint 2 is monitored during the pouring process of the concrete construction joint 2.
In another technical scheme, after the concrete construction joint 2 is poured in the step S2, the first heat preservation layer is arranged to maintain the temperature in the connecting body within 25 ℃.
In another technical scheme, a tamping procedure is required to be performed in the concrete pouring process, and the tamping procedure comprises the following steps:
when carrying out concrete placement in the concrete construction joint 2, lieing in set up a plurality of points of vibrating on the concrete structure in the concrete construction joint 2 to smash and vibrate, every is smash the distance of vibration point position and is 300 ~ 400mm, when pouring according to the pump sending, forms the actual conditions of a slope naturally, arranges three vibrating spears around every pouring area, and the front track vibrating spear is arranged in bottom and concrete slope foot department, ensures that the lower part concrete is closely knit, and the rear track vibrating spear is arranged at the concrete unloading point, solves the tamping of upper portion concrete.
In another technical solution, the vibrating process further includes: in the vibrating process, the vibrating tool is quickly contacted with the vibrating point position and then is pulled out at a constant speed in the time shorter than the time when the vibrating tool is contacted with the vibrating point position, the vibrating whole body adopts the principle of quick insertion and slow pulling, the upper layer concrete is prevented from being vibrated firstly, the lower layer concrete bubbles cannot be discharged, and the vibrating rod is slightly pulled up and down, so that the vibrating is compact.
In another technical scheme, in the step S2, a striking-off and tamping procedure is further included after the concrete pouring procedure is completed, and the striking-off and tamping procedure includes:
a1, scraping a poured surface according to a preset plane track by using a scraping tool;
and A2, pressing the poured pouring surface to be horizontal by using a compaction tool according to a preset plane track towards the direction of the pouring surface.
(1) The strength of the carbon fiber cloth 1 is very high, which can make the original structural strength higher.
(2) The carbon fiber material basically does not change the size of the original firmware obviously in the using process, so the carbon fiber material is convenient to use and does not influence the size of the original product.
(3) The method is suitable for reinforcing and repairing various structural parts of various structural types, such as beams, plates, columns, roof trusses, piers, bridges, cylinders, shells and other structures.
(4) The reinforcement of the side surface can enhance the concrete cohesiveness of the construction joint, ensure the integrity of the concrete member, and the reinforcement of the beam top can increase the top pressure resistance of the beam and ensure the stress of the beam.
(5) The detection method of the carbon fiber cloth 1 is a drawing test, and the main mechanical indexes and detection reports of the carbon fiber cloth 1 are as follows.
Main mechanical index of carbon fiber sheet
| Performance items | Carbon fiber cloth | Carbon fiber plate |
| Standard value of tensile strength | ≥3000Mpa | ≥2000Mpa |
| Modulus of strength E | ≥2.1*100000Mpa | ≥1.4*100000Mpa |
| Elongation percentage | ≥1.5％ | ≥1.5％ |
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (1)
1. The utility model provides a repair structure of concrete construction joint, concrete construction joint comprises first concrete structure face and the relative interval of second concrete structure face, repair structure is used for right the concrete construction joint carries out the reinforcement process, the reinforcement process includes: roughening opposite side walls of the first concrete structure surface and the second concrete structure surface which form the concrete construction joint; pouring the concrete construction joint to form a connected body filled in the concrete construction joint; still need carry out the process of pounding in concrete placement, the process of pounding includes: when concrete is poured in the concrete construction joint, arranging a plurality of tamping point positions on a concrete structure in the concrete construction joint, and performing tamping, wherein the distance between each tamping point position is 300-400 mm; in the tamping process, the tamping tool is quickly contacted with the tamping point position, and then the tamping tool is pulled out at a constant speed in a time shorter than the time for contacting the tamping point position; a covering and curing step for the connected body; reinforcing the connecting body, the first concrete structure surface and the second concrete structure surface after the covering and curing process is finished; pouring the concrete construction joint further comprises adding compensation shrinkage concrete into the poured concrete during pouring; the repair structure is applied to the post-cast structure face department of concrete construction joint, its characterized in that, it includes to repair the structure:
the protective layer is attached to the outer side of the concrete construction joint, is connected with the first concrete structure and the second concrete structure in a covering mode, covers the concrete construction joint, and is used for enhancing the tensile strength of the post-cast structure surface of the concrete construction joint;
the protective layer is made of carbon fiber cloth;
the carbon fiber cloth includes:
a sticking part which is stuck and covered on the outer side of the concrete construction joint;
the fixing part is integrally connected with the pasting part, and one side, far away from the pasting part, of the fixing part of the carbon fiber cloth extends to the first concrete structure surface or the second concrete structure surface for fixing;
the interval sets up the parting bead on the structural plane of fixed part, the parting bead is: the fixing portion of the carbon fiber cloth is divided into a plurality of structures at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110430743.2A CN113136898B (en) | 2021-04-21 | 2021-04-21 | Repairing structure and repairing method for concrete construction joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110430743.2A CN113136898B (en) | 2021-04-21 | 2021-04-21 | Repairing structure and repairing method for concrete construction joint |
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| Publication Number | Publication Date |
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| CN113136898A CN113136898A (en) | 2021-07-20 |
| CN113136898B true CN113136898B (en) | 2023-03-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202214708U (en) * | 2011-09-06 | 2012-05-09 | 沈迪州 | Protective structure for horizontal concrete construction joint |
| CN109057353A (en) * | 2018-08-23 | 2018-12-21 | 国家电网有限公司 | A kind of concrete smashes method of slight and its device |
| EP3670751A1 (en) * | 2018-12-21 | 2020-06-24 | BESAPLAST KUNSTSTOFFE GmbH | Joint sealing device capable of handling heavy loads |
| CN211572039U (en) * | 2019-11-29 | 2020-09-25 | 长沙远大住宅工业集团股份有限公司 | Anti-cracking structure of fabricated building |
| CN112031821A (en) * | 2020-08-04 | 2020-12-04 | 北京鸿锐嘉科技发展有限公司 | Reinforcing protection treatment method for tunnel lining defects |
-
2021
- 2021-04-21 CN CN202110430743.2A patent/CN113136898B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202214708U (en) * | 2011-09-06 | 2012-05-09 | 沈迪州 | Protective structure for horizontal concrete construction joint |
| CN109057353A (en) * | 2018-08-23 | 2018-12-21 | 国家电网有限公司 | A kind of concrete smashes method of slight and its device |
| EP3670751A1 (en) * | 2018-12-21 | 2020-06-24 | BESAPLAST KUNSTSTOFFE GmbH | Joint sealing device capable of handling heavy loads |
| CN211572039U (en) * | 2019-11-29 | 2020-09-25 | 长沙远大住宅工业集团股份有限公司 | Anti-cracking structure of fabricated building |
| CN112031821A (en) * | 2020-08-04 | 2020-12-04 | 北京鸿锐嘉科技发展有限公司 | Reinforcing protection treatment method for tunnel lining defects |
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| CN113136898A (en) | 2021-07-20 |
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