CN110666941A - Box girder prefabricated end template dismounting device and construction method thereof - Google Patents
Box girder prefabricated end template dismounting device and construction method thereof Download PDFInfo
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- CN110666941A CN110666941A CN201911014050.4A CN201911014050A CN110666941A CN 110666941 A CN110666941 A CN 110666941A CN 201911014050 A CN201911014050 A CN 201911014050A CN 110666941 A CN110666941 A CN 110666941A
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- box girder
- dismounting
- steel
- end template
- mechanical jack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
Abstract
The invention discloses a box girder prefabricated end template dismounting device which comprises a mechanical jack, a dismounting ring, connecting pull rods, a clamping sleeve and a steel plate, wherein two connecting pull rods are symmetrically arranged on two sides of the steel plate, the clamping sleeve used for mounting the mechanical jack is arranged between the two connecting pull rods, the mechanical jack is clamped on the steel plate through the clamping sleeve, a port is arranged at the front end of the mechanical jack, the clamping sleeve is fixed above the steel plate through the two steel rods, and the dismounting ring is welded on an end module and is matched and connected with the connecting pull rods. The invention solves a series of problems of difficult disassembly of the end head template, high labor intensity and the like in the existing box girder prefabrication, ensures the quality of the box girder, and has the advantages of firm and stable fixation, convenient and quick operation and simple structure. The box girder prefabricated end template is used for dismounting, the automation degree is high, the whole construction process is in a safe, stable and quick controllable state, the engineering quality qualified rate is 100%, no safety production accident occurs in the construction process, the construction period is ensured, the construction quality is improved, and the social benefit is remarkable.
Description
Technical Field
The invention relates to a disassembling tool, in particular to a box girder prefabricated end template disassembling device and a construction method thereof.
Background
At present, modes such as manual prying and removing are generally adopted when an end template is detached in the box girder prefabricating process, so that the end damage of the box girder affects the appearance quality, even damages are caused to a box girder finished product when the end template is serious, the template operation difficulty is high when the end template is manually pried and removed, the safety risk is high, the man-machine operation matching is difficult, and the work efficiency is low.
Disclosure of Invention
In order to solve the problems, the invention provides a box girder prefabricated end template dismounting device and a construction method thereof, which effectively solve the problems of high labor intensity, low working efficiency, poor box girder appearance quality and the like in the traditional construction, ensure the overall quality of the prefabricated box girder and accelerate the construction progress.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a prefabricated end template dismounting device of case roof beam, comprises mechanical jack, stripper ring, connecting rod, cutting ferrule and steel sheet, and the steel sheet bilateral symmetry is provided with two connecting rod, installs a cutting ferrule that is used for installing mechanical jack between two connecting rod, and mechanical jack passes through the cutting ferrule joint on the steel sheet, and a port is installed to the front end, and the cutting ferrule passes through two steel poles to be fixed in the top of steel sheet, and the stripper ring welds at the end module, is connected with connecting rod cooperation.
Furthermore, two connecting pull rods are 7-shaped steel rods and penetrate through the steel plate, threads are uniformly arranged on the lower section of the connecting pull rod, and a nut is connected with the threads.
Furthermore, the upper ends of the two steel rods are welded with the two sides of the clamping sleeve, threads are uniformly arranged on the outer wall of the clamping sleeve, and the lower end of the clamping sleeve penetrates through the steel plate threads to be connected with a nut.
Furthermore, the port is a cylindrical steel pipe with two open ends.
Furthermore, the operating handle of the mechanical jack is perpendicular to the steel plate and is positioned outside the steel plate.
The construction method of the box girder prefabricated end template dismounting device comprises the following steps:
s1, before construction, firstly welding a disassembly ring on the box girder end template, only needing one welding, and facilitating recycling;
s2, connecting and fixing the upper ends of the connecting pull rods on the two sides with a dismantling ring welded on the end template, connecting the port of the box girder prefabricated end template dismantling device with a steel bar of a bottom plate phi 25 on the bottom surface of the box girder end template, and completing the installation of the dismantling device;
s3, when the box girder prefabricated end template dismounting device is dismounted, the two box girder prefabricated end template dismounting devices are synchronously carried out, the mechanical jack handle is rotated, the mechanical jack drives the end template to be slowly separated from the box girder along with pulling force during extension, the dismounting of the end template is finally completed, then the connecting pull rods on the two sides of the end template dismounting ring are removed, the dismounting ports are separated from the steel bars of the box girder bottom plate at the same time, the dismounting device is dismounted and completed, the templates are placed, the construction process ensures that the surface of the box girder end is smooth after the box girder end is dismounted, and.
The invention has the following beneficial effects:
1) the prefabricated box girder end template dismounting construction method is energy-saving, environment-friendly and free of noise pollution in the whole construction process, does not influence the construction site environment, meets the sustainable development, not only promotes the construction efficiency, but also effectively ensures the construction environment, and meets the requirement of green and environment protection.
2) The prefabricated box girder end template dismounting construction method is successfully applied to prefabrication of a super-large bridge box girder harvested in a PDSYSG-6 contract section of a highway Peng, and the device can be used for quickly and conveniently dismounting the end template, so that the labor intensity is greatly reduced, and the construction time is saved.
3) According to the prefabricated box girder end formwork dismounting construction method, machinery and equipment are not required to be matched for construction, energy consumption is effectively reduced in the construction process, and the energy-saving effect is obvious.
4) The end die plate has the advantages of being firm and stable in fixation, convenient and fast to operate and simple in structure. The box girder prefabricated end template is used for dismounting, the automation degree is high, the whole construction process is in a safe, stable and quick controllable state, the engineering quality qualified rate is 100%, no safety production accident occurs in the construction process, the construction period is ensured, the construction quality is improved, and the social benefit is remarkable.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the installation of the release ring in the embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, the box girder prefabricated end template dismounting device according to the embodiment of the invention is composed of a mechanical jack 1, a dismounting ring 2, connecting pull rods 3, a clamping sleeve 4 and a steel plate 5, wherein two connecting pull rods 3 are symmetrically arranged on two sides of the steel plate 5, the clamping sleeve 4 for mounting the mechanical jack is arranged between the two connecting pull rods 3, the mechanical jack 1 is clamped on the steel plate 3 through the clamping sleeve 4, a port 6 is arranged at the front end of the mechanical jack, the clamping sleeve 4 is fixed above the steel plate through two steel rods 7, and the dismounting ring 2 is welded on an end module and is matched and connected with the connecting pull rods. The two connecting pull rods are 7-shaped steel rods and penetrate through the steel plate, threads are uniformly arranged on the lower section of the connecting pull rod, and a nut is connected with the threads. The upper ends of the two steel rods are welded with the two sides of the cutting sleeve, the outer wall of the cutting sleeve is evenly provided with threads, and the lower end of the cutting sleeve penetrates through the steel plate and is connected with a nut in a threaded manner. The port is a cylindrical steel pipe with two open ends. And an operating handle of the mechanical jack is perpendicular to the steel plate and is positioned outside the steel plate. The model of the mechanical jack is 275mm of a 25T body, and the stroke is 130 mm.
As shown in fig. 1-2, the present embodiment includes the following steps:
s1, before construction, firstly welding a disassembly ring 2 (positioned on one side of a phi 25 bottom plate steel bar 8) on the box girder end template 7, and only once welding is needed, so that the box girder end template is convenient to recycle;
s2, connecting and fixing the upper ends of the connecting pull rods 3 at the two sides with the dismantling rings 2 welded on the end template, connecting the port of the box girder prefabricated end template dismantling device with a bottom plate steel bar 8 with the diameter of phi 25 on the bottom surface of the box girder end template, and completing the installation of the dismantling device;
s3, when the box girder prefabricated end template dismounting device is dismounted, the two box girder prefabricated end template dismounting devices are synchronously carried out, the mechanical jack handle is rotated, the mechanical jack drives the end template to be slowly separated from the box girder along with pulling force during extension, the dismounting of the end template is finally completed, then the connecting pull rods on the two sides of the end template dismounting ring are removed, the dismounting ports are separated from the steel bars of the box girder bottom plate at the same time, the dismounting device is dismounted and completed, the templates are placed, the construction process ensures that the surface of the box girder end is smooth after the box girder end is dismounted, and.
According to the concrete implementation, the end template is connected with the device, the template is slowly separated from the beam body by using the pulling force of the jack, the end template is disassembled simply and quickly, the construction progress is accelerated, the quality of the end of the box beam is ensured, the energy is saved, the environment is protected, no noise pollution is caused in the whole construction process, the construction site environment is not influenced, and the requirement of green and environment protection is met.
Reinforcing bar quality control
(1) All steel products need to have factory pass certificates before entering a field, the same furnace number does not exceed 60T or the steel products are used as a sampling unit according to batches, appearance and hardness inspection is carried out according to regulations during entering the field, and the steel products can be used after being inspected to be qualified.
(2) The steel plate is firstly processed into a semi-finished product, each section of processed semi-finished product is transported to the site and then is installed in sections, and the welding of the steel plate meets the standard requirement
Mechanical jack quality control
(1) When the jack is used, the force is uniformly exerted when the rocker is manually rotated, and the jack cannot ascend or descend quickly or slowly so as to avoid the condition that the jack cannot work normally.
(2) And (4) keeping the mechanical jack clean, and performing regular inspection and cleaning.
(3) The parts with friction need to be oiled regularly, and the damaged mechanical jack can not be used any more, and the mechanical jack needs to be repaired in time and then put into use.
Examples of the applications
The project name is as follows: super bridge box girder prefabrication for harvesting in PDSYSG-6 contract section of Pengda expressway
Engineering site: front beam society of village valley villages in mountain Kongtong area of Shang-Liang province in Gansu province
Construction period: the work is started in 2016, 12 and 15 days, and completed in 2018, 12 and 15 days
Construction cost: 58419.98 Wanyuan
Overview of the engineering: the length of the right line bridge of the harvest grand bridge is 1714.75m, the length of the left line bridge is 1657.5m, the left line and the right line are separated, the clear width is 12.5m, and the upper structure of the right width is 11-link: 9 (5 × 30) +2 (6 × 30), the left upper structure is 11-fold: 11*(5*30). The prestressed concrete post-tensioned continuous box girder is orthogonally arranged, and is simply supported and then continuous. The longitudinal section longitudinal slope of the bridge is-2.270 percent. The span is 30m, and 448 pieces of box girders are provided.
Application effects
The prefabricated box girder end template dismounting construction method has a good effect in the prefabricated construction of the extra-large bridge box girder of the harvest of the PDSYSG-6 contract section of the expanded expressway, the end template is usually dismounted by manual prying and the like, so that the box girder is damaged due to the end damage, the appearance quality is influenced, and even the box girder finished product is damaged in serious cases.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. The utility model provides a prefabricated end template dismounting device of case roof beam, its characterized in that comprises mechanical jack, stripper ring, connecting rod, cutting ferrule and steel sheet, and the steel sheet bilateral symmetry is provided with two connecting rod, installs a cutting ferrule that is used for installing mechanical jack between two connecting rod, and mechanical jack passes through the cutting ferrule joint on the steel sheet, and a port is installed to the front end, and the cutting ferrule passes through two steel poles to be fixed in the top of steel sheet, and the stripper ring welds in the end module, is connected with connecting rod cooperation.
2. A box girder prefabrication end formwork dismounting device as claimed in claim 1, wherein both the connecting pull rods are "7" shaped steel rods, are arranged through the steel plates, are uniformly provided with threads at the lower section, and are connected with a nut.
3. A box girder prefabrication end formwork detaching device as claimed in claim 1, wherein the upper ends of the two steel rods are welded with both sides of the cutting ferrule, the outer wall thereof is uniformly provided with threads, and the lower end is connected with a nut through the steel plate threads.
4. A box girder prefabricated end formwork dismounting device according to claim 1, wherein a cylindrical steel pipe with both ends opened is adopted for the port.
5. A box girder prefabrication end formwork dismantling device as claimed in claim 1, wherein the operating handle of said mechanical jack is disposed perpendicular to the steel plate and outside the steel plate.
6. A construction method of a box girder prefabricated end formwork dismounting device according to any one of claims 1 to 5, characterized by comprising the following steps:
s1, before construction, firstly welding a disassembly ring on the box girder end template, only needing one welding, and facilitating recycling;
s2, connecting and fixing the upper ends of the connecting pull rods on the two sides with a dismantling ring welded on the end template, connecting the port of the box girder prefabricated end template dismantling device with a steel bar of a bottom plate phi 25 on the bottom surface of the box girder end template, and completing the installation of the dismantling device;
s3, when the two box girder prefabricated end template dismounting devices are dismounted, the mechanical jack handle is rotated, the mechanical jack drives the end template to be slowly separated from the box girder along with pulling force during extension, the dismounting of the end template is finally completed, then the connecting pull rods on the two sides of the end template dismounting ring are removed, the dismounting port is separated from the steel bar of the box girder bottom plate, the dismounting device finishes dismounting, and the template is placed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014050.4A CN110666941A (en) | 2019-10-23 | 2019-10-23 | Box girder prefabricated end template dismounting device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014050.4A CN110666941A (en) | 2019-10-23 | 2019-10-23 | Box girder prefabricated end template dismounting device and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110666941A true CN110666941A (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911014050.4A Pending CN110666941A (en) | 2019-10-23 | 2019-10-23 | Box girder prefabricated end template dismounting device and construction method thereof |
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| CN (1) | CN110666941A (en) |
Citations (8)
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|---|---|---|---|---|
| JP3466136B2 (en) * | 2000-06-22 | 2003-11-10 | 株式会社ピーエス三菱 | Method and apparatus for overhanging PC bridge |
| WO2008132277A1 (en) * | 2007-04-27 | 2008-11-06 | Destia Oy | Scaffold arrangement and method for repairing the edge structure of a concrete bridge |
| CN202644407U (en) * | 2012-06-12 | 2013-01-02 | 甘肃路桥建设集团有限公司 | Demoulding device for bottom plate bracket of capping beam constructed by hoop method |
| CN204589820U (en) * | 2015-04-16 | 2015-08-26 | 安徽华骅桥梁设备制造有限公司 | A kind of Xiang Liang external mold travel mechanism |
| CN205399216U (en) * | 2016-02-16 | 2016-07-27 | 中铁四局集团第一工程有限公司 | Mould is demolishd in step to ballastless track precast box girder end mould |
| CN207564680U (en) * | 2017-10-27 | 2018-07-03 | 中铁十六局集团第五工程有限公司 | A kind of form removal equipment for T-shaped beam |
| CN207878279U (en) * | 2017-11-30 | 2018-09-18 | 江苏兆信工程项目管理有限公司 | A kind of bridge installation jacking apparatus based on bridge security performance |
| CN110103175A (en) * | 2019-06-17 | 2019-08-09 | 广西路桥工程集团有限公司 | A kind of T beam-ends mould dismounting device |
-
2019
- 2019-10-23 CN CN201911014050.4A patent/CN110666941A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3466136B2 (en) * | 2000-06-22 | 2003-11-10 | 株式会社ピーエス三菱 | Method and apparatus for overhanging PC bridge |
| WO2008132277A1 (en) * | 2007-04-27 | 2008-11-06 | Destia Oy | Scaffold arrangement and method for repairing the edge structure of a concrete bridge |
| CN202644407U (en) * | 2012-06-12 | 2013-01-02 | 甘肃路桥建设集团有限公司 | Demoulding device for bottom plate bracket of capping beam constructed by hoop method |
| CN204589820U (en) * | 2015-04-16 | 2015-08-26 | 安徽华骅桥梁设备制造有限公司 | A kind of Xiang Liang external mold travel mechanism |
| CN205399216U (en) * | 2016-02-16 | 2016-07-27 | 中铁四局集团第一工程有限公司 | Mould is demolishd in step to ballastless track precast box girder end mould |
| CN207564680U (en) * | 2017-10-27 | 2018-07-03 | 中铁十六局集团第五工程有限公司 | A kind of form removal equipment for T-shaped beam |
| CN207878279U (en) * | 2017-11-30 | 2018-09-18 | 江苏兆信工程项目管理有限公司 | A kind of bridge installation jacking apparatus based on bridge security performance |
| CN110103175A (en) * | 2019-06-17 | 2019-08-09 | 广西路桥工程集团有限公司 | A kind of T beam-ends mould dismounting device |
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Application publication date: 20200110 |
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