CN108708282B - Method for heightening and leveling support - Google Patents
Method for heightening and leveling support Download PDFInfo
- Publication number
- CN108708282B CN108708282B CN201810493776.XA CN201810493776A CN108708282B CN 108708282 B CN108708282 B CN 108708282B CN 201810493776 A CN201810493776 A CN 201810493776A CN 108708282 B CN108708282 B CN 108708282B
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- Prior art keywords
- support
- polymer material
- high polymer
- framework
- height
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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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- 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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/40—Plastics
Abstract
The invention discloses a method for heightening and leveling a support, which comprises the following steps: A. measuring the support seat void height, and calculating the use amount of the high polymer material and the layer number of the support framework; B. cutting the supporting framework according to the appearance of the support; C. placing a layer of support framework on the surface of a clean flat plate, uniformly coating a layer of high polymer material on the support framework, soaking the support framework in the high polymer material, and repeating the steps; D. c, jacking the beam, placing the support pad composite material prepared in the step C on the upper surface or the lower surface of the support, supporting the template around the support pad composite material, and reserving an overflow groove; E. reducing the height of the beam to an elevation, and placing a temporary support to enable the redundant high polymer material to flow out of the overflow groove; F. and after the high polymer material is cured, removing the temporary support and the template. The invention can improve the defects of the prior art, has no limit on construction clearance, is not graded, and is suitable for leveling and stepless height adjustment.
Description
Technical Field
The invention relates to the field of bridge erection, in particular to a method for heightening and leveling a support.
Background
In the bridge beam supports installation, to the precast beam, the bridge beam supports at first with precast beam is connected, secondly place precast beam and support together on the bed stone of pier, because there are the elevation of bed stone inconsistent and the deviation scheduling problem of bridge beam supports height, easily produce support and take off the sky and inhomogeneous supporting atress phenomenon. For continuous beams, the bridge support is firstly placed on the pad stone, and then the steel bars are bound to pour the beam body. When the support is replaced in the later period, the phenomena of support void and uneven stress can be caused due to the height deviation of the bridge support. In the use process of the bridge support, due to foundation settlement and other reasons, the phenomena of support void and uneven stress can be caused.
The bridge engineering requires that the beam body needs to be closely contacted with the support, the phenomenon that the beam body and the support are separated from each other cannot occur, if the phenomenon that the separation occurs, four-point support of the beam body is changed into three-point support or even two-point support, the support constraint of the beam body is changed, and the stress performance of the beam body is seriously influenced. The long-term action can generate various shearing damages to the beam body and damage the beam body, and the service life of the whole bridge is shortened. The Chinese patent 201510025146.6 discloses a method for leveling the bottom surface of a precast beam slab for mounting a bridge support, and proposes that mortar is filled in a space formed by a steel backing plate and a rubber surrounding sleeve, but the steel plate has a certain thickness, the thinnest opening flat steel plate is 2mm, and then the thickness of the bonding mortar is increased. Therefore, the method is not suitable for the support leveling with the clearance smaller than 2mm and the support replacement work of the old bridge, and the clearance when the support is replaced by the old bridge is caused by the deviation of the processing height of the support, and the deviation is smaller than 2 mm. The adhesive mortar is fastened above the steel base plate by the rubber surrounding sleeve, so that the thickness of the adhesive mortar is inconvenient to be too thick and the adhesive mortar is easy to flow out of the rubber surrounding sleeve, and the adhesive mortar is only suitable for leveling and is not suitable for heightening.
Disclosure of Invention
The invention aims to provide a method for heightening and leveling a support, which can overcome the defects of the prior art, is not limited in construction clearance, is not graded and is suitable for leveling and stepless heightening.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A method for heightening and leveling a support comprises the following steps:
A. measuring the support seat void height, and calculating the use amount of the high polymer material and the layer number of the support framework;
B. cutting a support framework according to the appearance of the support, wherein the outer contour of the support framework is larger than that of the support;
C. placing a layer of support framework on the surface of a clean flat plate, uniformly coating a layer of high polymer material on the surface of the clean flat plate, soaking the support framework in the high polymer material, repeating the steps, placing the support framework again, and coating the high polymer material until the support cushion composite material is finished, wherein the height of the support cushion composite material is higher than the height of the support seat void;
D. c, jacking the beam, placing the support pad composite material prepared in the step C on the upper surface or the lower surface of the support, supporting the template around the support pad composite material, and reserving an overflow groove;
E. reducing the height of the beam to an elevation, and placing a temporary support to enable the redundant high polymer material to flow out of the overflow groove;
F. and after the high polymer material is cured, removing the temporary support and the template.
Preferably, the height of each layer of supporting skeleton is 0.5 mm.
Preferably, the applied polymer material has a thickness of 0.5mm to 1mm per layer.
Preferably, when the support is empty and is less than 0.5mm, the polymer material is directly coated on the upper surface of the support or the upper surface of the abutment.
Preferably, the polymer material is polyurethane or resin.
Preferably, the support framework is glass fiber or carbon fiber or cord fabric.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention has no limit on construction clearance, is not graded, and is suitable for leveling and stepless height adjustment. The support is effectively guaranteed to be closely attached to the beam body or the abutment. The pressure-bearing capacity of the cured high polymer material can be enhanced by the supporting framework, and the phenomenon of crushing the high polymer material is avoided. Therefore, the phenomena of support seat void and uneven stress are solved, the stress performance of the beam body is ensured, and the service life of the bridge is further ensured.
Drawings
FIG. 1 is a block diagram of a bolster composite in accordance with an embodiment of the present invention.
Fig. 2 is a structural view of a construction site in an embodiment of the present invention.
In the figure: 1. a polymer material; 2. a support framework; 3. a beam; 4. a support; 5. pier abutment; 6. a bolster composite.
Detailed Description
A method for heightening and leveling a support comprises the following steps:
A. measuring the support seat void height, and calculating the use amount of the high polymer material and the layer number of the support framework;
B. cutting a support framework according to the appearance of the support, wherein the outer contour of the support framework is larger than that of the support;
C. placing a layer of support framework on the surface of a clean flat plate, uniformly coating a layer of high polymer material on the surface of the clean flat plate, soaking the support framework in the high polymer material, repeating the steps, placing the support framework again, and coating the high polymer material until the support cushion composite material is finished, wherein the height of the support cushion composite material is higher than the height of the support seat void;
D. c, jacking the beam, placing the support pad composite material prepared in the step C on the upper surface or the lower surface of the support, supporting the template around the support pad composite material, and reserving an overflow groove;
E. reducing the height of the beam to an elevation, and placing a temporary support to enable the redundant high polymer material to flow out of the overflow groove;
F. and after the high polymer material is cured, removing the temporary support and the template.
The height of each layer of supporting framework is 0.5 mm.
The thickness of each layer of the coated high polymer material is 0.5mm-1 mm.
When the support is less than 0.5mm in the height of coming to nothing, directly paint macromolecular material on the upper surface of support or abutment.
The high polymer material is polyurethane.
The supporting framework is made of carbon fiber.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A method for heightening and leveling a support is characterized by comprising the following steps:
A. measuring the support seat void height, and calculating the use amount of the high polymer material and the layer number of the support framework;
B. cutting a support framework according to the appearance of the support, wherein the outer contour of the support framework is larger than that of the support;
C. placing a layer of support framework on the surface of a clean flat plate, uniformly coating a layer of high polymer material on the surface of the clean flat plate, soaking the support framework in the high polymer material, repeating the steps, placing the support framework again, and coating the high polymer material until the support cushion composite material is finished, wherein the height of the support cushion composite material is higher than the height of the support seat void;
D. c, jacking the beam, placing the support pad composite material prepared in the step C on the upper surface or the lower surface of the support, supporting the template around the support pad composite material, and reserving an overflow groove;
E. reducing the height of the beam to an elevation, and placing a temporary support to enable the redundant high polymer material to flow out of the overflow groove;
F. after the high polymer material is cured, removing the temporary support and the template;
in addition, the height of each layer of supporting framework is 0.5mm, the thickness of each layer of coated high polymer material is 0.5mm-1mm, when the height of the support in the clearance is less than 0.5mm, the high polymer material is directly coated on the upper surface of the support or the upper surface of the abutment, the high polymer material is polyurethane, and the supporting framework is carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493776.XA CN108708282B (en) | 2018-05-22 | 2018-05-22 | Method for heightening and leveling support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493776.XA CN108708282B (en) | 2018-05-22 | 2018-05-22 | Method for heightening and leveling support |
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| Publication Number | Publication Date |
|---|---|
| CN108708282A CN108708282A (en) | 2018-10-26 |
| CN108708282B true CN108708282B (en) | 2020-05-05 |
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| CN201810493776.XA Active CN108708282B (en) | 2018-05-22 | 2018-05-22 | Method for heightening and leveling support |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220578A (en) * | 2008-01-30 | 2008-07-16 | 郑旭峰 | Adjustable bridge support |
| KR20090081231A (en) * | 2008-01-23 | 2009-07-28 | 주식회사 부흥시스템 | steel-laminated elastomeric bearings for supporting small-sized of a bridge |
| CN101768249A (en) * | 2009-12-30 | 2010-07-07 | 洛阳双瑞特种装备有限公司 | Filling resin for poured and cured type height-adjustable supports and preparing method thereof |
| CN202323694U (en) * | 2011-12-09 | 2012-07-11 | 衡水宝力工程橡胶有限公司 | Support height adjusting device |
| CN103833953A (en) * | 2014-03-03 | 2014-06-04 | 黎明化工研究设计院有限责任公司 | Polyurethane resin used for filling heightening support of bridge and preparation method and construction method thereof |
-
2018
- 2018-05-22 CN CN201810493776.XA patent/CN108708282B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090081231A (en) * | 2008-01-23 | 2009-07-28 | 주식회사 부흥시스템 | steel-laminated elastomeric bearings for supporting small-sized of a bridge |
| CN101220578A (en) * | 2008-01-30 | 2008-07-16 | 郑旭峰 | Adjustable bridge support |
| CN101768249A (en) * | 2009-12-30 | 2010-07-07 | 洛阳双瑞特种装备有限公司 | Filling resin for poured and cured type height-adjustable supports and preparing method thereof |
| CN202323694U (en) * | 2011-12-09 | 2012-07-11 | 衡水宝力工程橡胶有限公司 | Support height adjusting device |
| CN103833953A (en) * | 2014-03-03 | 2014-06-04 | 黎明化工研究设计院有限责任公司 | Polyurethane resin used for filling heightening support of bridge and preparation method and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN108708282A (en) | 2018-10-26 |
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Denomination of invention: A Method for Adjusting Height and Level of Bearing Effective date of registration: 20221103 Granted publication date: 20200505 Pledgee: Cangzhou Bank Co.,Ltd. Hengshui Branch Pledgor: SINO RUBBER TECHNOLOGY Co.,Ltd. Registration number: Y2022980020740 |