CN110952451A - Air-sounding prevention method for epoxy resin support - Google Patents
Air-sounding prevention method for epoxy resin support Download PDFInfo
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- CN110952451A CN110952451A CN201911131966.8A CN201911131966A CN110952451A CN 110952451 A CN110952451 A CN 110952451A CN 201911131966 A CN201911131966 A CN 201911131966A CN 110952451 A CN110952451 A CN 110952451A
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- support
- epoxy resin
- embedded plate
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an anti-airborne sound method for an epoxy resin support, which comprises the following steps: firstly, cleaning the surface of a pre-buried plate of a support; then, a reinforcing mesh is placed on the embedded plate, then epoxy resin glue is coated on the outer side of the reinforcing mesh, and finally, broken stones are arranged on the surface of the epoxy resin glue. The transition structure is arranged between the embedded plate of the support and the concrete, so that the influence of the difference of expansion coefficients of the embedded plate of the support and the concrete beam in the expansion and contraction process is relieved to the maximum extent, the embedded plate of the support and the concrete has high combination degree and good compactness, and the air noise defect is avoided.
Description
Technical Field
The invention belongs to the technical field of prestressed concrete simply supported box girder construction, and particularly relates to an air-sound preventing method for an epoxy resin support.
Background
The prefabricated box girder of high-speed railway adopts batch production centralized production, the embedded support steel sheet in box girder bottom is pour with the roof beam body together, install bridge beam supports in embedded support board during the frame roof beam again, by the support crab-bolt through the crab-bolt hole on the stone pad be fixed in the stone pad through modes such as grout, the dead weight of prefabricated girder, second phase dead load and operation load all transmit to the pier through support department, if support board department has the sound, when the support board bears, support department probably forms the invagination or the formula that creeps is sunken, to upper portion bridge structure, traffic safety and the stability of roof beam body itself produce adverse effect, can cause the railway traffic accident when serious. At present, in the construction of prestressed concrete simply supported box girders, the air noise of a support embedded steel plate (support plate for short) is a common defect of the railway prefabricated box girders, and the air noise can be generated when the air noise is expressed by hammering the lower surface of the embedded support plate. The formation of the support plate hollow sound is related to the beam concrete pouring incompact at the support or the support plate and the beam concrete are not organically bonded and have gaps. The bearing plate hollow noise is a common 'symptom' in box girder prefabrication, and always troubles the production of high-speed railway bridges. Therefore, it is necessary to research the treatment measures for preventing and eliminating the seat plate blank noise, and the specific reasons are analyzed as follows: 1. the support plate with the improper concrete vibration belongs to a centralized stress point, the design of reinforcing steel bars is dense, the concrete penetrability is poor, a vibrating rod is not easy to insert in place during pouring, local leakage vibration is caused, and the concrete cannot be uniformly and compactly distributed, so that a gap is generated. 2. The poor bonding between the surface of the support plate and the concrete is caused by the difference between the steel materials of the support plate and the concrete, so that the difference between the expansion coefficients is large; the surface of the bearing plate is smooth in anti-corrosion treatment coating, so that concrete and the bearing cannot be organically bonded, physical separation can be formed between the concrete and the bearing plate, and then a gap is formed, so that the phenomenon of air noise of the bearing plate is caused. 3. The concrete shrinkage creep and the concrete shrinkage creep with large difference of the expansion coefficients of the steel plate and the concrete easily cause gaps between the support plate and the concrete; the expansion coefficients of the steel plate and the concrete have large difference, and the gap between the support plate and the concrete is easily caused along with expansion with heat and contraction with cold.
Disclosure of Invention
In view of the above, the present invention provides an anti-rattle method for an epoxy resin support, which aims to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an anti-aircraft sound method for an epoxy resin support comprises the following steps:
s1, cleaning the surface of the embedded plate of the support;
s2, adding dibutyl ester and ethylenediamine into the epoxy resin, fully and uniformly stirring to form a mixture, pouring the mixture onto the embedded plate of the support within 30 minutes, and uniformly brushing by using the hanging pieces to form a brushing area;
s3, placing a steel bar mesh at the painting area, and spot-welding the steel bar mesh on the embedded plate of the support;
s4, coating epoxy resin glue on the outer side of the steel bar mesh, and then uniformly sprinkling a layer of broken stone consistent with the raw material of the beam concrete on the surface of the epoxy resin glue;
and S5, standing for 30 minutes, and then performing the next process.
Further, when the embedded plate of the support is cleaned, oil stains and dust on the surface of the embedded plate of the support are wiped by using dry cotton cloth.
Further, the blending ratio of dibutyl ester and ethylenediamine in the mixture of step S2 is: 100ml of dibutyl ester and 60ml of ethylenediamine are added per 1Kg of epoxy resin.
Furthermore, the crushed stone in the step S4 is 5mm-10mm size crushed stone brushed by a screen.
Further, in the step S4, the occupied area of the broken stones accounts for 70% -85% of the total area of the painting area.
Further, the crushed stone in step S4 occupies an area of 80% of the total area of the painting area.
Furthermore, the reinforcing mesh is a 400 × 700mm square frame formed by welding phi 16 reinforcing steel bars.
Furthermore, the using amount of the mixture on the single embedded plate of the support is 0.3 Kg.
Further, a high-frequency vibrator is installed on the lower side of the support embedded plate.
Compared with the prior art, the invention has the following advantages:
the transition structure is arranged between the embedded plate of the support and the concrete, so that the influence of the difference of expansion coefficients of the embedded plate of the support and the concrete beam in the expansion and contraction process is relieved to the maximum extent, the embedded plate of the support and the concrete has high combination degree and good compactness, and the air noise defect is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
fig. 1 is a schematic diagram of a support embedded plate with a transition structure.
Description of reference numerals:
1-a support embedded plate; 2-reinforcing mesh; 3-breaking stone; 4-mixing the materials.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
An anti-air-noise method for an epoxy resin support is shown in figure 1 and comprises the following steps:
s1, cleaning the surface of the support embedded plate 1, specifically, wiping dirt and impurities such as oil stain, dust and the like on the surface of the support embedded plate by using dry cotton cloth;
s2, adding dibutyl ester and ethylenediamine into the epoxy resin, fully and uniformly stirring to form a mixture 4, pouring the mixture onto the embedded plate of the support within 30 minutes, and uniformly brushing by using the hanging pieces to form a brushing area; it should be noted that the brushing area generally avoids structures such as sleeves on the pre-embedded plate of the support, and is convenient for laying steel bar meshes;
s3, placing the reinforcing mesh 2 at the painting area, and spot-welding the reinforcing mesh on the embedded plate of the support;
s4, coating epoxy resin glue on the outer side of the steel bar mesh, and then uniformly sprinkling a layer of broken stone 3 consistent with the raw material of the beam concrete on the surface of the epoxy resin glue;
the mixture, the steel bar mesh, the epoxy resin glue and the broken stones form a transition structure between the support embedded plate and the concrete beam. It should be noted that the arrangement operation of the crushed stones is uniform as much as possible, so that the formed crushed stone layer is more natural, the stability of the crushed stones naturally falling under the action of gravity is better, and the stability of a transition structure on the embedded plate of the support is ensured;
and S5, standing for 30 minutes, and then performing the next process.
In a preferred embodiment, the blending ratio of dibutyl ester and ethylenediamine in the mixture of step S2 is: 100ml of dibutyl ester and 60ml of ethylenediamine are added per 1Kg of epoxy resin. During the specific operation, the mixture is quickly and uniformly stirred to form a mixture, and the mixture can be used without bubbles or color difference after being uniformly stirred, and the mixture needs to be used within 30 min.
The crushed stone in the step S4 is 5mm-10mm crushed stone brushed by a screen. The specific operation is as follows: the method comprises the steps of adopting the same broken stones as a beam body, taking the broken stones by using a 10mm sieve for the first time, sieving the sieved broken stones by using a 5mm sieve, taking the broken stones with the size of 5mm-10mm on the sieve, washing the broken stones by using water, spreading the broken stones at a ventilation position, and airing or drying the broken stones by using a blower.
In the step S4, the occupied area of the broken stones accounts for 70-85% of the total area of the painting area. Preferably, the area occupied by the crushed stones is 80% of the total area of the painting area.
In an alternative embodiment, the mesh of steel bars is a 400 x 700mm square frame welded by using phi 16 steel bars. In this example, the amount of the mixture used on the pre-buried plate of the single support is 0.3 Kg. The mixture is weighed once before and after being poured out so as to determine the using amount, the using amount of the mixture of the pre-embedded steel plates of the single support is controlled to be about 0.3kg, and tests prove that the combination firmness is influenced by too much and too little using amount of the mixture.
According to the invention, reasonable components are matched to prepare the mixture, the use amount of the mixture is controlled, and meanwhile, the covering area of the crushed stone is combined, so that the gap between the embedded plate of the support and the concrete beam is effectively reduced, the adhesion stability of the material is improved, the uniform and compact concrete pouring is ensured to the greatest extent from the structure, and the defect of air noise of the support is avoided.
In order to further improve the compactness of the material on the support embedded plate, in an alternative embodiment, a high-frequency vibrator can be arranged on the lower side of the support embedded plate.
The transition structure is arranged between the embedded plate of the support and the concrete, so that the influence of the difference of expansion coefficients of the embedded plate of the support and the concrete beam in the expansion and contraction process is relieved to the maximum extent, the embedded plate of the support and the concrete has high combination degree and good compactness, and the air noise defect is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (9)
1. An anti-aircraft sound method for an epoxy resin support is characterized by comprising the following steps:
s1, cleaning the surface of the embedded plate of the support;
s2, adding dibutyl ester and ethylenediamine into the epoxy resin, fully and uniformly stirring to form a mixture, pouring the mixture onto the embedded plate of the support within 30 minutes, and uniformly brushing by using the hanging pieces to form a brushing area;
s3, placing a steel bar mesh at the painting area, and spot-welding the steel bar mesh on the embedded plate of the support;
s4, coating epoxy resin glue on the outer side of the steel bar mesh, and then uniformly sprinkling a layer of broken stone consistent with the raw material of the beam concrete on the surface of the epoxy resin glue;
and S5, standing for 30 minutes, and then performing the next process.
2. The method of claim 1, wherein the method comprises the following steps: when the embedded plate of the support is cleaned, oil stains and dust on the surface of the embedded plate of the support are wiped by using dry cotton cloth.
3. The method of claim 1, wherein the method comprises the following steps: the doping proportion of the dibutyl ester and the ethylenediamine in the mixture obtained in the step S2 is as follows: 100ml of dibutyl ester and 60ml of ethylenediamine are added per 1Kg of epoxy resin.
4. The method of claim 1, wherein the method comprises the following steps: the crushed stone in the step S4 is 5mm-10mm crushed stone brushed by a screen.
5. The method of claim 1 or 4, wherein the epoxy resin support has an anti-rattle effect, and the method comprises: in the step S4, the occupied area of the broken stones accounts for 70-85% of the total area of the painting area.
6. The method of claim 5, wherein the method comprises the following steps: the area occupied by the crushed stones in the step S4 accounts for 80% of the total area of the painting area.
7. The method of claim 1, wherein the method comprises the following steps: the reinforcing mesh is a 400 x 700mm square frame formed by welding phi 16 reinforcing steel bars.
8. The method of claim 7, wherein the method comprises the following steps: the using amount of the mixture on the pre-embedded plate of the single support is 0.3 Kg.
9. The method of claim 1, wherein the method comprises the following steps: and a high-frequency vibrator is arranged on the lower side of the embedded plate of the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911131966.8A CN110952451A (en) | 2019-11-19 | 2019-11-19 | Air-sounding prevention method for epoxy resin support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911131966.8A CN110952451A (en) | 2019-11-19 | 2019-11-19 | Air-sounding prevention method for epoxy resin support |
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| Publication Number | Publication Date |
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| CN110952451A true CN110952451A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911131966.8A Pending CN110952451A (en) | 2019-11-19 | 2019-11-19 | Air-sounding prevention method for epoxy resin support |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2289677B3 (en) * | 1974-10-29 | 1977-11-18 | Felt Products Mfg Co | |
| JP2000170393A (en) * | 1998-12-10 | 2000-06-20 | Toho Kenzai:Kk | Separation prevention member for interior and exterior tile of building or the like |
| CN104594211A (en) * | 2015-01-27 | 2015-05-06 | 沈阳建筑大学 | Existing hollow board beam bridge bearing separation consolidating structure and construction method |
| CN105297620A (en) * | 2015-11-07 | 2016-02-03 | 西安公路研究院 | Steel plate spherical crown polymer mortar structure support and construction method thereof |
| CN106677068A (en) * | 2016-12-26 | 2017-05-17 | 中铁十九局集团第工程有限公司 | Construction method capable of preventing hollowing at box girder support plate |
| CN107313605A (en) * | 2017-07-14 | 2017-11-03 | 深圳市坤巽建筑设计顾问有限公司 | A kind of hollowing restorative procedure |
| KR20200078730A (en) * | 2018-12-21 | 2020-07-02 | 주식회사 경호엔지니어링 종합건축사사무소 | Covering apparatus for protecting bridge support |
-
2019
- 2019-11-19 CN CN201911131966.8A patent/CN110952451A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2289677B3 (en) * | 1974-10-29 | 1977-11-18 | Felt Products Mfg Co | |
| JP2000170393A (en) * | 1998-12-10 | 2000-06-20 | Toho Kenzai:Kk | Separation prevention member for interior and exterior tile of building or the like |
| CN104594211A (en) * | 2015-01-27 | 2015-05-06 | 沈阳建筑大学 | Existing hollow board beam bridge bearing separation consolidating structure and construction method |
| CN105297620A (en) * | 2015-11-07 | 2016-02-03 | 西安公路研究院 | Steel plate spherical crown polymer mortar structure support and construction method thereof |
| CN106677068A (en) * | 2016-12-26 | 2017-05-17 | 中铁十九局集团第工程有限公司 | Construction method capable of preventing hollowing at box girder support plate |
| CN107313605A (en) * | 2017-07-14 | 2017-11-03 | 深圳市坤巽建筑设计顾问有限公司 | A kind of hollowing restorative procedure |
| KR20200078730A (en) * | 2018-12-21 | 2020-07-02 | 주식회사 경호엔지니어링 종합건축사사무소 | Covering apparatus for protecting bridge support |
Non-Patent Citations (1)
| Title |
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| 随风飘逝: "箱梁支座板空响预防工艺性试验总结", 《HTTPS://WENKU.BAIDU.COM/VIEW/471B9BC0F71FB7360B4C2E3F5727A5E9846A2743.HTML》 * |
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Application publication date: 20200403 |