CN102828472B - Method for cutting off temporary support of continuous girder bridge by wire saw - Google Patents
Method for cutting off temporary support of continuous girder bridge by wire saw Download PDFInfo
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- CN102828472B CN102828472B CN201210351989.1A CN201210351989A CN102828472B CN 102828472 B CN102828472 B CN 102828472B CN 201210351989 A CN201210351989 A CN 201210351989A CN 102828472 B CN102828472 B CN 102828472B
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- temporary support
- rope
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- rope saw
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Abstract
The invention relates to a method for cutting off a temporary support of a continuous girder bridge by a wire saw. The method comprises the following steps of: 1, chiseling a first groove at each of four corners of the lower part of the temporary support; 2, mounting wire saw equipment and a cutting wire; 3, cutting off the section of the lower part of the temporary support to perforate; 4, stuffing a disc steel bar into a gap at the section of the cut-off lower part of the temporary support; 5, chiseling a second groove at each of four corners of the upper part of the temporary support; 6, mounting the wire saw equipment and the cutting wire; 7, cutting the section of the upper part of the temporary support to perforate; 8, dismantling the wire saw equipment and the cutting wire; 9, pushing out the whole separated temporary support by a jack; and 10, symmetrically cutting off the residual temporary supports according to the modes from the step 1 to the step 9. According to the invention, in a process of dismantling the temporary supports of the continuous girder bridge, an accident can be effectively avoided, and the dismantling speed of the temporary supports can be quickened.
Description
Technical field
The present invention relates to a kind of method of removing continuous girder bridge temporary support, be specifically related to a kind of method of removing continuous girder bridge temporary support with rope sawing.
Background technology
In the continuous beam bridge construction, after the closure of beam body, must remove temporary support and become continuous system conversion to reach firm structure.At present, conventionally adopt artificial hand-held air rock drill to cut the temporary support of continuous girder bridge.During construction, first temporary support surrounding reinforcement cover concrete is divested, then with gas cutting, cut off anchor bar, finally cut again residue concrete.This method is when implementing, and because temporary support is between beam body and pier shaft top cap, construction space is narrower, is not easy to artificial chisel except construction, and belongs to work high above the ground, and personal safety has a big risk; In addition, temporary support concrete design strength is high, and reinforcing bar is intensive, and artificial chisel is except very difficult, causes removing efficiency low, directly affects follow-up work, makes all can not better realize in the management objectives such as safety, cost, progress.Therefore, for the dismounting of continuous girder bridge temporary support, need to develop a kind of new construction method.
Summary of the invention
The object of this invention is to provide a kind of method of using rope sawing to remove continuous girder bridge temporary support, adopt the method construction, can effectively avoid the generation of security incident and the dismounting speed of quickening temporary support.
The method of removing continuous girder bridge temporary support with rope sawing of the present invention, its step is as follows:
Step 3, the cross section of being cut off when temporary support bottom are greater than two of temporary support cross section/for the moment, rope saw equipment is installed to the opposite side of temporary support bottom, retighten rope saw equipment and install and cut rope, start rope saw equipment cuts off perforation by temporary support lower section;
In step 4, the lower section gap of having been cut off at temporary support, fill at least two steel-bars, as roller bearing, use;
Step 5, on four corner angle on temporary support top, cut a hole respectively second groove, and near two second grooves in pier shaft outside higher than two the second grooves near permanent bearing one side, in order to facilitate ejecting of follow-up temporary support;
Step 6, on temporary support top one side installing rope saw equipment, and this rope saw equipment is fixed on the surface of temporary support, then by rope saw equipment cut rope sling on temporary support, and by cut rope put in four second grooves on temporary support top, start rope saw equipment starts to cut off;
Step 7, the cross section of being cut off when temporary support top are greater than two of temporary support cross section/for the moment, rope saw equipment is installed to the opposite side on temporary support top, retighten rope saw equipment and install and cut rope, start rope saw equipment cuts off perforation by cross section, temporary support top;
Step 8, remove rope saw equipment and cut rope;
Step 9, use jack, eject as roller bearing the temporary support integral body of having separated by steel-bar;
Step 10, the mode according to step 1 to step 9, symmetry is cut off on bridge pier other temporary support.
Beneficial effect of the present invention: adopt the method to remove continuous girder bridge temporary support, can guarantee constructor's safety, greatly improve the efficiency of removing temporary support, and the effectively lower cost of construction.
Accompanying drawing explanation
Fig. 1 removes one of construction schematic diagram of continuous girder bridge temporary support with rope sawing;
Fig. 2 is except two of the construction schematic diagram of continuous girder bridge temporary support with rope sawing;
Fig. 3 is except three of the construction schematic diagram of continuous girder bridge temporary support with rope sawing;
Fig. 4 is except four of the construction schematic diagram of continuous girder bridge temporary support with rope sawing;
Fig. 5 is except five of the construction schematic diagram of continuous girder bridge temporary support with rope sawing.
The specific embodiment
Now by reference to the accompanying drawings the present invention is described in further detail:
The method except continuous girder bridge temporary support with rope sawing as shown in Figures 1 to 5,
Step 3, as shown in Figure 3, the cross section of being cut off when temporary support 1 bottom is greater than two of temporary support 1 cross section/for the moment, rope saw equipment 3 is installed to the opposite side of temporary support 1 bottom, this rope saw equipment 3 is fixed on the surface of temporary support 1, then the rope 4 that cuts of rope saw equipment 3 is enclosed within on temporary support 1, and put in four the first grooves 2 of temporary support 1 bottom cutting rope 1, start rope saw equipment 3 cuts off perforation by temporary support 1 lower section;
Step 4, as shown in Figure 4, fills at least two steel-bars 6 in the lower section gap of having been cut off at temporary support 1 and uses as roller bearing, and the quantity of steel-bar 6 is determined according to the size of temporary support 1;
Step 5, on four corner angle on temporary support 1 top, cut a hole respectively second groove 5, and near two second grooves 5 in pier shaft outside higher than two the second grooves 5 near permanent bearing 1 one sides;
Step 6, at temporary support 1 top one side installing rope saw equipment 3, and this rope saw equipment 3 is fixed on the surface of temporary support 1, then the rope 4 that cuts of rope saw equipment 3 is enclosed within on temporary support 1, and put in four second grooves 5 on temporary support 1 top cutting rope 1, start rope saw equipment 3 starts to cut off;
Step 7, the cross section of being cut off when temporary support 1 top are greater than two of temporary support 1 cross section/for the moment, rope saw equipment 3 is installed to the opposite side on temporary support 1 top, this rope saw equipment 3 is fixed on the surface of temporary support 1, then the rope 4 that cuts of rope saw equipment 3 is enclosed within on temporary support 1, and put in four second grooves 5 on temporary support 1 top cutting rope 1, start rope saw equipment 3 cuts off perforation by temporary support 1 cross section, top;
Step 8, remove rope saw equipment 3 and cut rope 4;
Step 9, as shown in Figure 5, the base of jack 7 utilizes permanent bearing for fulcrum, by steel-bar 6, as roller bearing, the temporary support of having separated 1 integral body is ejected.
Step 10, the mode according to step 1 to step 9, symmetry is cut off remaining temporary support 1.
Claims (1)
1. with rope sawing, remove a method for continuous girder bridge temporary support, its step is as follows:
Step 1, on four corner angle of temporary support (1) bottom, cut a hole respectively first groove (2), and near two first grooves in pier shaft outside lower than two the first grooves near permanent bearing one side;
Step 2, at temporary support (1) bottom one side installing rope saw equipment (3), and this rope saw equipment is fixed on the surface of temporary support, then the rope (4) that cuts of rope saw equipment is enclosed within on temporary support, and put in four first grooves (2) of temporary support bottom cutting rope, start rope saw equipment starts to cut off;
Step 3, the cross section of being cut off when temporary support (1) bottom are greater than two of temporary support cross section/for the moment, the saw equipment (3) of restricting is installed to the opposite side of temporary support bottom, retighten rope saw equipment and install and cut rope, start rope saw equipment cuts off perforation by temporary support lower section;
In step 4, the lower section gap of having been cut off at temporary support (1), fill at least two steel-bars (6);
Step 5, on four corner angle on temporary support (1) top, cut a hole respectively second groove (5), and near two second grooves in pier shaft outside higher than two the second grooves near permanent bearing one side;
Step 6, at temporary support (1) top one side installing rope saw equipment (3), and this rope saw equipment is fixed on the surface of temporary support, then the rope (4) that cuts of rope saw equipment is enclosed within on temporary support, and put in four second grooves (5) on temporary support top cutting rope, start rope saw equipment starts to cut off;
Step 7, the cross section of being cut off when temporary support (1) top are greater than two of temporary support cross section/for the moment, the saw equipment (3) of restricting is installed the opposite side on temporary support top, retighten rope saw equipment and install and cut rope, start rope saw equipment cuts off perforation by cross section, temporary support top;
Step 8, remove rope saw equipment (3) and cut rope (4);
Step 9, with jack (7), release the temporary support of having separated (1) is whole;
Step 10, the mode according to step 1 to step 9, symmetry is cut off remaining temporary support (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351989.1A CN102828472B (en) | 2012-09-20 | 2012-09-20 | Method for cutting off temporary support of continuous girder bridge by wire saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351989.1A CN102828472B (en) | 2012-09-20 | 2012-09-20 | Method for cutting off temporary support of continuous girder bridge by wire saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828472A CN102828472A (en) | 2012-12-19 |
| CN102828472B true CN102828472B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210351989.1A Expired - Fee Related CN102828472B (en) | 2012-09-20 | 2012-09-20 | Method for cutting off temporary support of continuous girder bridge by wire saw |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386007B (en) * | 2018-03-28 | 2021-04-23 | 深圳市工勘岩土集团有限公司 | Construction method for directionally dismantling large-volume reinforced concrete by using wire saw |
| CN108453908B (en) * | 2018-04-30 | 2023-09-26 | 安徽省公路桥梁工程有限公司 | Temporary consolidation cutting system and method for cantilever casting box girder |
| CN110939064A (en) * | 2019-11-19 | 2020-03-31 | 中国铁建大桥工程局集团有限公司 | Method for quickly removing continuous beam pier and beam consolidation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256031A (en) * | 1992-12-15 | 1993-10-05 | Daimoshiya:Kk | Cutting and demolishing device for reinforced concrete structure |
| JPH10249847A (en) * | 1997-03-11 | 1998-09-22 | Concrete Kooring Kk | Horizontally cutting method for concrete structure |
| JP2002327543A (en) * | 2001-05-02 | 2002-11-15 | Nippon Concrete Cutting Kogyo Osaka:Kk | Horizontal cutting construction method for columnar concrete structure |
| KR20030096204A (en) * | 2003-12-02 | 2003-12-24 | 한용철 | Repair method for bridge shoe |
| CN101768926A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Diamond rope saw static force cutting method |
| CN101892636A (en) * | 2010-08-12 | 2010-11-24 | 上海先为土木工程有限公司 | Integral lifting reconstruction method for high-span overweight continuous box girder |
-
2012
- 2012-09-20 CN CN201210351989.1A patent/CN102828472B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256031A (en) * | 1992-12-15 | 1993-10-05 | Daimoshiya:Kk | Cutting and demolishing device for reinforced concrete structure |
| JPH10249847A (en) * | 1997-03-11 | 1998-09-22 | Concrete Kooring Kk | Horizontally cutting method for concrete structure |
| JP2002327543A (en) * | 2001-05-02 | 2002-11-15 | Nippon Concrete Cutting Kogyo Osaka:Kk | Horizontal cutting construction method for columnar concrete structure |
| KR20030096204A (en) * | 2003-12-02 | 2003-12-24 | 한용철 | Repair method for bridge shoe |
| CN101768926A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Diamond rope saw static force cutting method |
| CN101892636A (en) * | 2010-08-12 | 2010-11-24 | 上海先为土木工程有限公司 | Integral lifting reconstruction method for high-span overweight continuous box girder |
Non-Patent Citations (4)
| Title |
|---|
| 刚构桥盆式支座更换技术;高文波;《广东建材》;20090313(第1期);第40-42页 * |
| 吴淞路闸桥切割拆除施工流程;罗志军;《中国市政工程》;20120420(第6期);第54-57页 * |
| 罗志军.吴淞路闸桥切割拆除施工流程.《中国市政工程》.2012,(第6期),第54-57页. |
| 高文波.刚构桥盆式支座更换技术.《广东建材》.2009,(第1期),第40-42页. |
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