CN110804946A - Maintenance method for large-displacement modulus type telescopic device - Google Patents
Maintenance method for large-displacement modulus type telescopic device Download PDFInfo
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- CN110804946A CN110804946A CN201911058753.7A CN201911058753A CN110804946A CN 110804946 A CN110804946 A CN 110804946A CN 201911058753 A CN201911058753 A CN 201911058753A CN 110804946 A CN110804946 A CN 110804946A
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- maintained
- jacking
- telescopic device
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a maintenance method of a large-displacement modulus type telescopic device, which comprises the following steps: preparing a jacking tool; connecting a jacking tool with a middle beam to be maintained in the large-displacement modulus type telescopic device; carrying out jacking operation, and jacking the intermediate beam to be maintained out of the large-displacement analog-digital telescopic device; maintaining the ejected intermediate beam to be maintained; and after the maintenance is finished, the jacking tool is removed, and the pushed-out middle beam to be maintained automatically returns to the original position of the large-displacement modulus type telescopic device. The maintenance method greatly prolongs the service life of the large-displacement modulus type telescopic device.
Description
Technical Field
The invention belongs to the technical field of bridge expansion devices, and particularly relates to a maintenance method of a large-displacement modulus type expansion device.
Background
With the increase of domestic bridges and super-huge bridges, the use of large-displacement modulus type expansion devices is also increasing synchronously. The bridge expansion device needs to meet the requirements of longitudinal, transverse and vertical deflection and corner of the bridge caused by temperature change, hurricane, vehicle-mounted, earthquake and other conditions, is a structural protection product bearing the maximum power load in the bridge structure, and needs to bear various complex power loads or impacts with different magnitudes; meanwhile, the shock absorption and isolation device is also subjected to fatigue, abrasion and various chemical and physical erosion, and is a vital shock absorption and isolation device for protecting a bridge structure. Therefore, the large-displacement modulus type telescopic device is scientific and reasonable in maintenance, the service life of the telescopic device is prolonged, and the value of the telescopic device is maximized. However, in the past, the maintenance of the large displacement modulus type expansion device is not available, so that the service life of the large displacement modulus type expansion device is shortened, and the cost is increased.
Disclosure of Invention
The invention provides a simple and convenient maintenance method for a large-displacement modulus type expansion device, which aims to solve the problems that the service life of the conventional large-displacement modulus type expansion device is influenced because the conventional large-displacement modulus type expansion device is not maintained.
The invention relates to a maintenance method of a large-displacement modulus type telescopic device, which is characterized by comprising the following steps:
step one, preparing a jacking tool;
step two, connecting the jacking tool with a middle beam to be maintained in the large-displacement modulus type telescopic device;
step three, implementing jacking operation, and jacking the intermediate beam to be maintained out of the large-displacement modulus type telescopic device;
fourthly, maintaining the ejected intermediate beam to be maintained;
and step five, after the maintenance is finished, removing the jacking tool, and automatically returning the pushed-out middle beam to be maintained to the original position of the large-displacement modulus type telescopic device.
Preferably, in step one, the jacking tool comprises the following components: the lifting device comprises one or two jacks, a long steel beam, two short steel beams with through holes at two ends, four screw rods, a plurality of matched screw caps and four C-shaped steels with screw holes matched with the screw rods at one ends.
Preferably, the components are assembled as follows: four C shape steel lower extreme buckles are in the die cavity of centre sill, and the upper end respectively with four screw rod lower extreme threaded connection, four screw rods pass four through-holes of two short girder steels, use the nut fastening on the screw rod of through-hole both sides, place the jack on the centre sill, place long girder steel on the jack, long girder steel is located the middle part below of two short girder steels and is perpendicular with short girder steel.
Preferably, when the number of the jacks is two, and the short steel beam is located between the two jacks, the lower ends of the four C-shaped steels are buckled in the cavities on the two sides of the middle beam to be maintained, and the middle beam to be maintained is pulled upwards after jacking.
Preferably, when the jack is one and is located between two short steel beams, the lower ends of the four C-shaped steels are buckled in the cavities on the corresponding sides of the middle beams on the two sides of the middle beam to be maintained, and the middle beam to be maintained is ejected downwards after jacking.
Has the advantages that: the invention adopts the combination of common tools to realize the jacking of the middle beam to be maintained in the large-displacement modulus type expansion device and finish the maintenance, thereby greatly prolonging the service life of the large-displacement modulus type expansion device, increasing the economic benefit, and simultaneously having simple operation tools, simple and convenient operation and high efficiency.
Drawings
FIG. 1 is a schematic view of a method of maintaining an upper center sill to be maintained in a maintenance method according to the present invention;
FIG. 2 is a schematic view of the maintenance method of the present invention with the center sill to be maintained pushed downward;
FIG. 3 is a schematic view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of a short steel beam;
in the figure, 1, a jack; 2. a middle beam to be maintained; 3. a screw; 4. a nut; 5. a short steel beam; 6. a long steel beam; 7. a jack; 8. a sliding support; 9. a rubber strip; 10. a slide spring; 11. and a through hole.
Detailed Description
The technical solution of the present invention is described in detail by the following examples, but the scope of the present invention is not limited to the examples.
The invention relates to a maintenance method of a large-displacement modulus type expansion device, which is characterized by comprising the following steps:
step one, preparing a jacking tool;
step two, connecting the jacking tool with a middle beam 2 to be maintained in the large-displacement modulus type telescopic device;
step three, implementing jacking operation, and jacking the intermediate beam 2 to be maintained out of the large-displacement modulus type telescopic device;
fourthly, maintaining the ejected intermediate beam 2 to be maintained;
and step five, after the maintenance is finished, removing the jacking tool, and automatically returning the pushed-out middle beam 2 to be maintained to the original position of the large-displacement modulus type telescopic device.
The jacking tool comprises the following components: one or two jacks 1 (7), a long steel beam 6, two short steel beams 5 with through holes 11 at two ends, four screw rods 3 and a plurality of matched screw caps 4, and four C-shaped steel with screw holes matched with the screw rods 3 at one end. The components were assembled as follows: the four C-shaped steel lower ends are buckled in a cavity of the middle beam, the upper ends of the four C-shaped steel lower ends are respectively in threaded connection with the lower ends of the four screw rods 3, the four screw rods 3 penetrate through the four through holes 11 of the two short steel beams 5, the screw rods 3 on the two sides of the through holes 11 are fastened by the screw caps 4, the middle beam is provided with the jacks 1 (7), the long steel beams 6 are arranged on the jacks 1 (7), and the long steel beams 6 are positioned below the middle parts of the two short steel beams 5 and are perpendicular to the short steel beams 5. The type of the long steel beam 6 and the short steel beam 5 is not particularly limited as long as the bearing capacity is sufficient, and generally, an i-beam is used as the long steel beam 6 and a square steel is used as the short steel beam 5.
When the jacks are two, the short steel beam 5 is positioned between the two jacks 1 and 7, the lower ends of the four C-shaped steel beams are buckled in the cavities at the two sides of the middle beam 2 to be maintained, and the middle beam 2 to be maintained is pulled upwards after jacking.
When the jack is one and is located between the two short steel beams 5, the lower ends of the four C-shaped steels are buckled in the cavities of the corresponding sides of the middle beams on the two sides of the middle beam 2 to be maintained, and the middle beam 2 to be maintained is ejected downwards after jacking.
In the actual operation process, a jacking tool is assembled firstly, when a sliding support 8 of an intermediate beam 2 to be maintained needs to be maintained, a rubber strip 9 on the intermediate beam related to jacking operation is taken out firstly to expose out of a cavity, two ultrathin hydraulic jacks 1 and 7 in a jacking tool assembly are placed on the intermediate beams on two sides of the intermediate beam 2 to be maintained, C-shaped steel is buckled in the cavities on two side faces of the intermediate beam 2 to be maintained, the ultrathin hydraulic jacks 1 and 7 jack a long steel beam 6, the long steel beam 6 jacks a short steel beam 5 on the long steel beam, and the short steel beam 5 jacks the intermediate beam 2 to be maintained through a screw rod 3 and a screw cap 4. And pulling the intermediate beam 2 to be maintained out of the large-displacement modulus type telescopic device upwards for a certain distance, taking out the sliding support 8, replacing the new sliding support 8, removing jacking after the replacement is finished, and slowly and automatically returning the maintained intermediate beam.
When the sliding spring 10 needs to be maintained, one ultrathin hydraulic jack 1 is placed on the middle beam 2 to be maintained, each C-shaped steel is buckled in the cavities of the corresponding sides of the other two middle beams on the two sides of the middle beam 2 to be maintained, the ultrathin hydraulic jack 1 jacks the long steel beam 6 after jacking, but the C-shaped steel is buckled on the two other middle beams and is fixed more firmly, so that the long steel beam 6 transmits the jacking force to the short steel beam 5, the short steel beam 5 transmits the jacking force to the middle beam 2 to be maintained through the screw rod 3 and the screw cap 4, and the middle beam 2 to be maintained is pushed downwards. And after the middle beam 2 to be maintained is ejected downwards from the large-displacement modulus type telescopic device, the sliding spring 10 is taken out, a new sliding spring 10 is replaced, after the lifting is finished, the lifting is released, and the maintained middle beam slowly and automatically returns.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A maintenance method for a large-displacement modulus type expansion device is characterized by comprising the following steps:
step one, preparing a jacking tool;
step two, connecting the jacking tool with a middle beam to be maintained in the large-displacement modulus type telescopic device;
step three, implementing jacking operation, and jacking the intermediate beam to be maintained out of the large-displacement modulus type telescopic device;
fourthly, maintaining the ejected intermediate beam to be maintained;
and step five, after the maintenance is finished, removing the jacking tool, and automatically returning the pushed-out middle beam to be maintained to the original position of the large-displacement modulus type telescopic device.
2. The method of claim 1, wherein in the first step, the jacking tool comprises the following components: the lifting device comprises one or two jacks, a long steel beam, two short steel beams with through holes at two ends, four screw rods, a plurality of matched screw caps and four C-shaped steels with screw holes matched with the screw rods at one ends.
3. The method of claim 2, wherein the components are assembled as follows: four C shape steel lower extreme buckles are in the die cavity of centre sill, and the upper end respectively with four screw rod lower extreme threaded connection, four screw rods pass four through-holes of two short girder steels, use the nut fastening on the screw rod of through-hole both sides, place the jack on the centre sill, place long girder steel on the jack, long girder steel is located the middle part below of two short girder steels and is perpendicular with short girder steel.
4. The maintenance method of the large-displacement-modulus telescopic device according to claim 3, wherein when the number of the jacks is two, and the short steel beam is located between the two jacks, the lower ends of the four C-shaped steels are fastened in the cavities on two sides of the middle beam to be maintained, and the middle beam to be maintained is pulled upwards after jacking.
5. The maintenance method of the large-displacement-modulus telescopic device according to claim 3, wherein when one jack is arranged between the two short steel beams, the lower ends of the four C-shaped steels are fastened in the cavities on the corresponding sides of the middle beam on the two sides of the middle beam to be maintained, and the middle beam to be maintained is ejected downwards after jacking.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911058753.7A CN110804946A (en) | 2019-11-01 | 2019-11-01 | Maintenance method for large-displacement modulus type telescopic device |
| PCT/CN2020/100543 WO2021082513A1 (en) | 2019-11-01 | 2020-07-07 | Method for maintaining large-displacement modular expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911058753.7A CN110804946A (en) | 2019-11-01 | 2019-11-01 | Maintenance method for large-displacement modulus type telescopic device |
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| Publication Number | Publication Date |
|---|---|
| CN110804946A true CN110804946A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911058753.7A Pending CN110804946A (en) | 2019-11-01 | 2019-11-01 | Maintenance method for large-displacement modulus type telescopic device |
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|---|---|
| CN (1) | CN110804946A (en) |
| WO (1) | WO2021082513A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082513A1 (en) * | 2019-11-01 | 2021-05-06 | 南京毛勒工程材料有限公司 | Method for maintaining large-displacement modular expansion device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0039454A2 (en) * | 1980-05-03 | 1981-11-11 | Kober AG | Bridging device for expansion joints in bridges or the like |
| CN2031811U (en) * | 1988-06-22 | 1989-02-01 | 上海市政工程设计院 | Modular dilatation joint structure with large deformation quantity |
| CN2316335Y (en) * | 1997-06-24 | 1999-04-28 | 天津市公路管理局公路设施修造厂 | Bridge expansion joint device |
| JP2000257013A (en) * | 1999-03-09 | 2000-09-19 | Nippon Chuzo Kk | Expansion joint device |
| JP2005350855A (en) * | 2004-06-08 | 2005-12-22 | Kawaguchi Metal Industries Co Ltd | Bridge joint |
| JP2005350854A (en) * | 2004-06-08 | 2005-12-22 | Kawaguchi Metal Industries Co Ltd | Bridge joint |
| JP2011052434A (en) * | 2009-09-01 | 2011-03-17 | Ihi Infrastructure Systems Co Ltd | Method for replacing cross beam |
| CN103911947A (en) * | 2014-04-01 | 2014-07-09 | 秦皇岛路桥建设开发有限公司 | Bridge extending and contracting device |
| CN104404871A (en) * | 2014-11-18 | 2015-03-11 | 刘金顶 | Treatment method for expansion joint of bridge |
| CN205857042U (en) * | 2016-06-28 | 2017-01-04 | 广州毛勒桥梁附件有限公司 | A kind of supporting pad block changing device of big displacement quantity bridge extension joint |
| CN208183525U (en) * | 2017-12-26 | 2018-12-04 | *** | A kind of hydraulic combined type bridge extension joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804946A (en) * | 2019-11-01 | 2020-02-18 | 南京毛勒工程材料有限公司 | Maintenance method for large-displacement modulus type telescopic device |
-
2019
- 2019-11-01 CN CN201911058753.7A patent/CN110804946A/en active Pending
-
2020
- 2020-07-07 WO PCT/CN2020/100543 patent/WO2021082513A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0039454A2 (en) * | 1980-05-03 | 1981-11-11 | Kober AG | Bridging device for expansion joints in bridges or the like |
| CN2031811U (en) * | 1988-06-22 | 1989-02-01 | 上海市政工程设计院 | Modular dilatation joint structure with large deformation quantity |
| CN2316335Y (en) * | 1997-06-24 | 1999-04-28 | 天津市公路管理局公路设施修造厂 | Bridge expansion joint device |
| JP2000257013A (en) * | 1999-03-09 | 2000-09-19 | Nippon Chuzo Kk | Expansion joint device |
| JP2005350855A (en) * | 2004-06-08 | 2005-12-22 | Kawaguchi Metal Industries Co Ltd | Bridge joint |
| JP2005350854A (en) * | 2004-06-08 | 2005-12-22 | Kawaguchi Metal Industries Co Ltd | Bridge joint |
| JP2011052434A (en) * | 2009-09-01 | 2011-03-17 | Ihi Infrastructure Systems Co Ltd | Method for replacing cross beam |
| CN103911947A (en) * | 2014-04-01 | 2014-07-09 | 秦皇岛路桥建设开发有限公司 | Bridge extending and contracting device |
| CN104404871A (en) * | 2014-11-18 | 2015-03-11 | 刘金顶 | Treatment method for expansion joint of bridge |
| CN205857042U (en) * | 2016-06-28 | 2017-01-04 | 广州毛勒桥梁附件有限公司 | A kind of supporting pad block changing device of big displacement quantity bridge extension joint |
| CN208183525U (en) * | 2017-12-26 | 2018-12-04 | *** | A kind of hydraulic combined type bridge extension joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082513A1 (en) * | 2019-11-01 | 2021-05-06 | 南京毛勒工程材料有限公司 | Method for maintaining large-displacement modular expansion device |
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| WO2021082513A1 (en) | 2021-05-06 |
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Application publication date: 20200218 |