CN111395206A - On-site deviation rectifying method for spherical support seat emptying - Google Patents
On-site deviation rectifying method for spherical support seat emptying Download PDFInfo
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- CN111395206A CN111395206A CN202010199554.4A CN202010199554A CN111395206A CN 111395206 A CN111395206 A CN 111395206A CN 202010199554 A CN202010199554 A CN 202010199554A CN 111395206 A CN111395206 A CN 111395206A
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- Prior art keywords
- support
- jack
- deviation rectifying
- seat plate
- spherical
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
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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 field deviation rectifying method for spherical support seat emptying, which comprises the following steps: step a, erecting a working platform beside a support, and simultaneously jacking a beam body at the upper part of the support by using a first jack through installing the first jack on the periphery of the support to remove the constraint between the support and the beam body; step b, drawing out the support and placing the support on a working platform; c, chiseling all mortar grouting materials between the lower seat plate of the support and the support cushion stone, placing a Ninong gasket at the center of the support cushion stone, pushing the support back to the original position, applying a second jack on the lower seat plate of the support, jacking the second jack, and correcting the support; d, erecting a template around the lower seat plate of the support and filling mortar grouting material, and removing the template and the jack after the strength of the mortar grouting material reaches the strength specified by the design. The on-site deviation rectifying method for spherical support seat emptying provided by the invention can achieve the effect of support seat deviation rectifying by utilizing the conditions of the project, and has the advantages of short time, high safety and cost saving.
Description
Technical Field
The invention relates to a field deviation rectifying method for spherical support seat emptying, and belongs to the technical field of bridge maintenance.
Background
The bridge bearing is an important structural component for connecting an upper structure and a lower structure of a bridge, is positioned between the bridge and the pad stone, can reliably transfer load and deformation (displacement and corner) borne by the upper structure of the bridge to the lower structure of the bridge, and is an important force transfer device of the bridge. When the lower base plate of the support is empty, the support deforms under the action of the weight of the upper beam, and the normal use of the bridge is affected. The bridge support deviation rectifying method comprises two methods: 1) and (4) drawing out the deformed support, and integrally replacing the support with a new support. 2) Adding a steel plate. However, both of the above methods have certain disadvantages.
The method for correcting the deviation of the deformed support is a common method for correcting the deviation of the replaced support, namely, jacks are arranged on the periphery of the support to jack a beam body, a damaged support is pulled out, and the beam body falls after the new support is replaced to finish correction treatment of the support, but the method has the following defects. 1) The construction cost is high, the cost for replacing the large-scale spherical support is up to forty-ten thousands, and the cost is high. Moreover, some supports have small deformation, can be continuously used after rectification, do not need to be replaced, and are not economical if directly replaced. 2) The construction period is long, and the method is not applicable to emergency projects or projects with requirements on time. And the jack jacking time is long and the potential safety hazard is increased. 3) For the replacement of the higher support of the pier, certain potential safety hazards exist in the disassembly and hoisting of the support.
The steel plate adding method mainly comprises the following steps: (a) determining the thickness of the steel plate, and preparing the steel plate; (b) a hydraulic jack supports the beam plate; (c) removing the emptied support and removing sundries on the support; (d) sticking the prepared steel plate on the hollow support base cushion stone by using epoxy resin glue, and sticking the support on the adjusted steel plate, wherein the adjustment cannot be carried out by using the overlapped steel plate; (e) the slowly dropping beam is in place. The steel plate adding method also has some disadvantages: 1) the construction condition is limited greatly and is limited greatly by the construction site conditions, the method is mainly used for construction under the beam body, the method is suitable for a better working surface under the beam body, the beam body is not heavy and is paved when the bridge deck is not constructed, if the bridge deck is paved, the beam body cannot be jacked up only by manpower and simple machinery, the jack is stressed mainly after the support is dismounted, and the time of the jack holding force is limited. 2) The construction period is long, the steel plate needs to be prefabricated in advance, and the method is not suitable for projects with short construction periods. 3) The hoisting and installation of the steel plate have certain potential safety hazards, the steel plate is not suitable for piers with higher heights, and the longer the deviation rectifying time of the support is, the higher the danger coefficient of the bridge is.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the on-site deviation rectifying method for spherical support emptying, which can achieve the effect of support deviation rectification by using the conditions of the project, and has the advantages of short time, high safety and cost saving.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a spherical support seat emptying field deviation rectifying method comprises the following steps:
step a, erecting a working platform beside a support, and simultaneously jacking a beam body at the upper part of the support by using a first jack through installing the first jack on the periphery of the support to remove the constraint between the support and the beam body;
step b, drawing out the support and placing the support on a working platform;
c, chiseling all mortar grouting materials between the lower seat plate of the support and the support cushion stone, placing a gasket at the center of the support cushion stone, pushing the support back to the original position, applying a second jack on the lower seat plate of the support, enabling the upper end of the second jack to be in contact with the lower surface of the upper seat plate of the support, jacking the second jack, and finally correcting the deviation of the void part of the spherical support by utilizing the jacking force of the second jack and the counter force provided by the self weight of the upper beam body;
and d, erecting a template around the lower seat plate of the support and filling mortar grouting material, and removing the template, the first jack and the second jack after the strength of the mortar grouting material reaches the strength specified by the design.
In the step a, the number of the first jacks is four, and the first jacks are uniformly distributed along the circumference of the support.
And b, arranging steel rails on two sides of the working platform, mounting an electric hoist at the bottom of the beam, and pulling the support to move onto the working platform along with the steel rails by the electric hoist.
In the step c, the size of the gasket is smaller than that of the lower seat plate of the support.
The gasket comprises a nylon material.
In the step c, the number of the second jacks is four, and the second jacks are respectively positioned at four corners of the lower seat plate of the support.
The invention has the beneficial effects that: the invention provides a field deviation rectifying method for spherical support seat emptying, which can rectify deviation of a support seat by utilizing the self weight of a beam body and the jacking force of a jack on the premise of not replacing the support seat, and solves the problem of deviation rectification of the support seat with short construction period. Meanwhile, large-scale mechanical equipment construction is not needed, the time is short, and the manufacturing cost is low.
Drawings
FIG. 1 is a schematic flow chart corresponding to a first step of the present invention;
FIG. 2 is a schematic flow chart corresponding to step two of the present invention;
FIG. 3 is a schematic flow chart corresponding to step three of the present invention;
FIG. 4 is a schematic flow chart corresponding to step four in the present invention;
FIG. 5 is a schematic diagram of the principle of deviation correction according to the present invention.
The reference numbers in the figures are as follows: 1-a beam body; 2-a seat board on the support; 3-a support lower seat plate; 4-a working platform; 5-first jack; 6-mortar grouting material; 7-support base stone; 8-support; 9-a second jack; 10-nylon gasket.
Detailed Description
The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
As shown in fig. 1 to 5, the invention discloses a field deviation rectifying method for spherical support seat emptying, which mainly comprises the following four steps:
step one, jacking a support and erecting a working platform. As shown in fig. 1, a working platform 4 is erected beside a deformed support 8, and meanwhile, four first jacks 5 are arranged around the support 8, and are uniformly distributed along the circumference of the support 8. The first jack 5 is utilized to jack the beam body 1 at the upper part of the support 8, and the constraint between the support 8 and the beam body 1 is removed.
And step two, steel rails are arranged on two sides of the working platform 4, an electric hoist is installed at the bottom of the beam, the electric hoist pulls the support 8 to move along the steel rails, and the support 8 is drawn out and placed on the working platform 4.
And step three, chiseling all mortar grouting materials 6 between the support lower seat plate 3 and the support cushion stone 7, placing a gasket 10 in the center of the support cushion stone 7, wherein the size of the gasket 10 is smaller than that of the support lower seat plate 3, and the material of the gasket 10 is preferably nylon. And pushing the support 8 back to the original position by using the steel rail, applying a second jack 9 on the support lower seat plate 3, and contacting the upper end of the second jack 9 with the lower surface of the support upper seat plate 2. The number of the second jacks 9 is four, and the second jacks are respectively positioned at four corners of the lower seat plate 3 of the support. At this time, the deformed part of the support 8 is corrected by the dead weight of the beam body 1 on the upper part of the support 8 and the thrust of the second jack 9.
And fourthly, erecting a template around the lower seat plate 3 of the support and filling mortar grouting material 6, and removing the template, the first jack 5 and the second jack 9 after the strength of the mortar grouting material 6 reaches the strength specified by the design.
According to the on-site deviation rectifying method for spherical support seat emptying provided by the invention, the deviation rectifying method for the support seat can be carried out by utilizing the self weight of the beam body and the jacking force of the jack on the premise of not replacing the support seat, so that the problem of support seat deviation rectifying with short construction period is solved, and the method has the advantages of no need of large-scale mechanical equipment construction, short time and low manufacturing cost.
The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. A spherical support seat emptying field deviation rectifying method is characterized in that: the method comprises the following steps:
step a, erecting a working platform (4) beside a support (8), and simultaneously jacking a beam body (1) at the upper part of the support (8) by using a first jack (5) through installing the first jack (5) on the periphery of the support (8) to remove the constraint between the support (8) and the beam body (1);
step b, the support (8) is drawn out and placed on the working platform (4);
c, chiseling all mortar grouting materials (6) between the lower seat plate (3) of the support and the support base stone (7), placing a gasket (10) at the center of the support base stone (7), pushing the support (8) back to the original position, applying a second jack (9) on the lower seat plate (3) of the support, enabling the upper end of the second jack (9) to be in contact with the lower surface of the upper seat plate (2) of the support, jacking the second jack (9), and finally correcting the deviation of the void part of the spherical support (8) by utilizing the jacking force of the second jack (9) and the counter force provided by the self weight of the upper beam body (1);
and d, erecting a template around the lower seat plate (3) of the support and filling mortar grouting material (6), and removing the template, the first jack (5) and the second jack (9) after the strength of the mortar grouting material (6) reaches the strength specified by the design.
2. The on-site deviation rectifying method for spherical support seat emptying according to claim 1, is characterized in that: in the step a, the number of the first jacks (5) is four, and the first jacks are uniformly distributed along the circumference of the support (8).
3. The on-site deviation rectifying method for spherical support seat emptying according to claim 1, is characterized in that: and in the step b, steel rails are arranged on two sides of the working platform (4), an electric hoist is installed at the bottom of the beam, and the electric hoist pulls the support (8) to move onto the working platform (4) along the steel rails.
4. The on-site deviation rectifying method for spherical support seat emptying according to claim 1, is characterized in that: in the step c, the size of the gasket (10) is smaller than that of the support lower seat plate (3).
5. The on-site deviation rectifying method for spherical support seat emptying according to claim 4, characterized in that: the gasket (10) is made of nylon.
6. The on-site deviation rectifying method for spherical support seat emptying according to claim 1, is characterized in that: in the step c, the number of the second jacks (9) is four, and the second jacks are respectively positioned at four corners of the support lower seat plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199554.4A CN111395206B (en) | 2020-03-20 | 2020-03-20 | On-site deviation rectifying method for spherical support seat emptying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199554.4A CN111395206B (en) | 2020-03-20 | 2020-03-20 | On-site deviation rectifying method for spherical support seat emptying |
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| CN111395206A true CN111395206A (en) | 2020-07-10 |
| CN111395206B CN111395206B (en) | 2021-05-25 |
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| CN202010199554.4A Active CN111395206B (en) | 2020-03-20 | 2020-03-20 | On-site deviation rectifying method for spherical support seat emptying |
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Citations (6)
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|---|---|---|---|---|
| JP2009180011A (en) * | 2008-01-31 | 2009-08-13 | Ihi Corp | Method of replacing sliding resin plate for supporting bridge |
| CN203429564U (en) * | 2013-09-05 | 2014-02-12 | 中铁二十局集团第六工程有限公司 | Accurate installation and construction structure for bridge support |
| CN104988845A (en) * | 2015-07-17 | 2015-10-21 | 重庆桥都桥梁技术有限公司 | Bridge bearer exchanging and newly-installation leveling method |
| CN106381817A (en) * | 2016-10-28 | 2017-02-08 | 柳州欧维姆工程有限公司 | Self-balancing type horizontal correcting device for correcting and resetting old bridge and construction method thereof |
| CN208266673U (en) * | 2018-04-10 | 2018-12-21 | 衡水盛田工程橡胶有限公司 | A kind of adjustable laminated rubber bearing |
| CN110835888A (en) * | 2019-11-28 | 2020-02-25 | 四川成通加固工程有限公司 | Construction method for leveling top surface of secondary beam falling support after jacking |
-
2020
- 2020-03-20 CN CN202010199554.4A patent/CN111395206B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009180011A (en) * | 2008-01-31 | 2009-08-13 | Ihi Corp | Method of replacing sliding resin plate for supporting bridge |
| CN203429564U (en) * | 2013-09-05 | 2014-02-12 | 中铁二十局集团第六工程有限公司 | Accurate installation and construction structure for bridge support |
| CN104988845A (en) * | 2015-07-17 | 2015-10-21 | 重庆桥都桥梁技术有限公司 | Bridge bearer exchanging and newly-installation leveling method |
| CN106381817A (en) * | 2016-10-28 | 2017-02-08 | 柳州欧维姆工程有限公司 | Self-balancing type horizontal correcting device for correcting and resetting old bridge and construction method thereof |
| CN208266673U (en) * | 2018-04-10 | 2018-12-21 | 衡水盛田工程橡胶有限公司 | A kind of adjustable laminated rubber bearing |
| CN110835888A (en) * | 2019-11-28 | 2020-02-25 | 四川成通加固工程有限公司 | Construction method for leveling top surface of secondary beam falling support after jacking |
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| CN111395206B (en) | 2021-05-25 |
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Address after: 210061 No. 8 Paneng Road, Jiangbei New District, Nanjing City, Jiangsu Province Applicant after: China Railway Bridge and Tunnel Technology Co.,Ltd. Address before: 210061 No. 8 Paneng Road, Jiangbei New District, Nanjing City, Jiangsu Province Applicant before: CHINA RAILWAY MAJOR BRIDGE (NANJING) BRIDGE AND RUNNEL INSPECT & RETROFIT Co.,Ltd. |
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