CN112976297B - Remanufacturing method of T-beam prefabricated pedestal - Google Patents
Remanufacturing method of T-beam prefabricated pedestal Download PDFInfo
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- CN112976297B CN112976297B CN202110186459.5A CN202110186459A CN112976297B CN 112976297 B CN112976297 B CN 112976297B CN 202110186459 A CN202110186459 A CN 202110186459A CN 112976297 B CN112976297 B CN 112976297B
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The application discloses method of remaking of T roof beam prefabrication pedestal calculates the difference M of length numerical value and the difference N of width numerical value between original T roof beam prefabrication pedestal and the target T roof beam prefabrication pedestal that need remaking, adds two extension sections of the difference M/2 length of numerical value at original T roof beam prefabrication pedestal both ends, adds two extension sections of the difference N/2 length of numerical value at original T roof beam prefabrication pedestal both sides. The pedestal is simple in modification method, convenient to operate and easy to construct. The method saves the time for pouring reinforced concrete and maintaining the concrete strength of the common pedestal, and can simultaneously carry out drilling and welding construction at multiple points, thereby saving the construction period and improving the construction efficiency. The method adopts phi 25 thread steel bars as bottom supports, saves construction cost compared with the traditional reinforced concrete structure pedestal, and has better economy.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a remanufacturing method of a T-beam prefabricating pedestal.
Background
As a common bridge construction mode, the precast beam needs to be built in a precast beam field and constructed by means of a precast beam pedestal in the construction process. Due to the fact that the prefabricated beam is various in structural form, the corresponding prefabricated pedestal structure is different in size. Generally, the size of the 30m prefabricated T-beam base is 31m × 50 cm × 40 cm (length × width × height), and the size of the 40m prefabricated T-beam base is 41m × 60 cm × 40 cm (length × width × height). The prefabricated pedestal is generally cast by adopting a reinforced concrete structure, and an enlarged foundation form is adopted within the range of 2m from the end of the pedestal.
In general practical application, the arrangement needs to be carried out according to the whole construction schedule of a project and the limitation of the site space of a precast beam field, and the condition that the specification of a precast T beam platform is changed exists in the precast beam construction process. For example, it is a conventional practice to break a 30m prefabricated T-beam platform and then pour it again in a size of 40m prefabricated T-beam platform, or to chisel a portion of a 30m prefabricated T-beam platform and then pour it again in a size of 40m prefabricated T-beam platform, which undoubtedly increases the amount of construction work and the construction period time, and brings about a certain economic loss.
Disclosure of Invention
The application mainly aims to provide a remanufacturing method of a T-beam prefabricating pedestal, which is used for remanufacturing an original T-beam prefabricating pedestal into a required specification, and can shorten the construction period and save the cost.
The application mainly aims to provide a remanufacturing method of a T-beam prefabricated pedestal, which comprises the following steps:
calculating the length numerical difference M and the width numerical difference N between the original T-beam prefabrication pedestal and a target T-beam prefabrication pedestal to be remanufactured, adding two lengthening sections with the numerical difference M/2 length at two ends of the original T-beam prefabrication pedestal, and adding two widening sections with the numerical difference N/2 length at two sides of the original T-beam prefabrication pedestal.
Preferably, adopt the plank sheathing when two extension sections are pour, carry out reinforcing bar processing production according to the prefabricated pedestal steel reinforcement skeleton texture size of target T roof beam in the reinforcing bar processing field, carry out the concrete placement construction after the installation reinforcing bar.
Preferably, during construction of the two lengthening sections, one M/2 long 5# channel steel is embedded at each of two ends of the upper portion of the existing pedestal, and after the strength of concrete reaches design requirements, steel plates with the thickness of 10-20 mm are paved on the concrete and the upper portion of the 5# channel steel.
Preferably, phi 25 threaded steel bars are used as bottom supports during construction of the two widening sections, and 5# channel steel legs are 3.7 cm in width.
Preferably, the phi 25 threaded steel bar is buried at a distance of 6.3 cm from the original T beam prefabrication bench side.
Preferably, during construction of the two widening sections, one side of each steel bar is transversely welded with a transverse phi 25 threaded steel bar, the newly-embedded steel bar is welded and fixed with the original T-shaped beam prefabrication pedestal, the other side of the steel bar is welded and fixed with the 5# channel steel, and then steel plates with the thickness of 10-20 mm are paved on the phi 25 threaded steel bar and the upper portion of the 5# channel steel.
Preferably, the original T-beam prefabricated pedestal size is 31m × 50 cm × 40 cm, and the target T-beam prefabricated pedestal size is 41m × 60 cm × 40 cm.
Preferably, firstly, drilling holes with a row spacing of 30 cm at a distance of 6.3 cm from the original T beam prefabrication bench side by adopting an electric drill, wherein the drilling depth is 5 cm, and phi 25 threaded steel bars are inserted into the holes, and the length of each phi 25 threaded steel bar is 45 cm;
fourthly, removing a rubber pipe in 5# channel steel of the original T-beam prefabrication pedestal, which is close to the side of the drilled hole, and transversely connecting and reinforcing the steel bar inserted into the drilled hole and the channel steel of the original T-beam prefabrication pedestal by adopting phi 25 threaded steel bars, namely, inserting one end of the steel bar into the 5# channel steel of the original T-beam prefabrication pedestal and welding and reinforcing the steel bar by adopting phi 25 threaded steel bars with the length of 10 cm, and welding and reinforcing the other end of the steel bar and the phi 25 threaded steel bars inserted into the drilled hole;
fifthly, welding a 5# channel steel with the length of 31m on the other side of the phi 25 twisted steel inserted into the drill hole;
and (3) paving a steel plate with the thickness of 10 mm on the phi 25 threaded steel bar and the upper part of the 5# channel steel, electrically welding and reinforcing the steel plate and the steel bar on the original T-beam prefabricating pedestal, wherein the space between welding points is 20 cm, and after welding, grinding the steel plate by a grinding wheel grinder through welding lines, so that the original 30m prefabricated T-beam pedestal is reformed into a 40mT beam prefabricating pedestal.
The beneficial effect of this application is: the application provides a construction method of simply reforming short construction period, saving cost, makes up the drawback and the not enough that exist in the construction method of conventional T roof beam prefabrication pedestal to required T roof beam prefabrication pedestal, reduces precast beam engineering because of the shared time of pedestal transformation and economic input. The pedestal is simple in modification method, convenient to operate and easy to construct. The method saves the time for pouring reinforced concrete and maintaining the concrete strength of the common pedestal, and can simultaneously carry out drilling and welding construction at multiple points, thereby saving the construction period and improving the construction efficiency. The method adopts phi 25 threaded steel bars as bottom supports, saves construction cost compared with the traditional pedestal with a reinforced concrete structure, and has better economy.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and the description of the exemplary embodiments of the present application are provided for explaining the present application and do not constitute an undue limitation on the present application. In the drawings:
FIG. 1 is a sectional view of the present invention in a modification.
FIG. 2 is a schematic diagram of the modified structure of the present invention.
1-prefabricating a pedestal of an original T-shaped beam; 2-phi 25 twisted steel; 3-5 # channel steel; 4-lengthening section; 5-a steel plate; 6-widening section.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1-2, the present application provides a method for modifying a T-beam prefabrication pedestal, which includes calculating a length value difference M and a width value difference N between an original T-beam prefabrication pedestal and a target T-beam prefabrication pedestal 1 to be modified, adding two lengthening sections 4 of the length of the value difference M/2 to two ends of the original T-beam prefabrication pedestal 1, and adding two widening sections 6 of the length of the value difference N/2 to two sides of the original T-beam prefabrication pedestal.
For example, a simple construction method for changing a 30m prefabricated T-beam pedestal into a 40m prefabricated T-beam pedestal. Since the size of the 30m prefabricated T beam platform is 31m × 50 cm × 40 cm (length × width × height), and the size of the 40m prefabricated T beam platform is 41m × 60 cm × 40 cm (length × width × height), the construction method is composed of two parts: firstly, lengthening 4 parts of two ends of an original 30m prefabricated T beam, for example, two ends of a platform seat of the original 30m prefabricated T beam are respectively lengthened by 5 m; secondly, two sides of the original 30m prefabricated T-beam platform are widened, for example, the width of the original 30m prefabricated T-beam platform is 50 cm to 60 cm. Namely, the original 30m prefabricated T-beam pedestal is lengthened and widened respectively, and a 10 mm thick pedestal steel plate is laid at the corresponding position, so that the 30m prefabricated T-beam pedestal is transformed into a 40m prefabricated T-beam pedestal.
The original 30m prefabricated T beam platform is widened to 60 cm from both sides, 5# channel steel 3 is welded on one side of the upper portion of the widening section, and phi 25 threaded steel bars are used as bottom supports during construction. Because the width of the 30m prefabricated T beam bench is 50 cm, the width of the 40m prefabricated T beam bench is 60 cm, and the width of the 5# channel steel leg is 3.7 cm, phi 25 threaded steel bars 2 are buried at a position 6.3 cm away from one side of the original 30m prefabricated T beam bench, one side of each steel bar is transversely welded with the transverse phi 25 threaded steel bars to weld and fix the newly buried steel bars with the original 30m prefabricated T beam bench, the other side of each steel bar is welded and fixed with the 5# channel steel 3, and then steel plates with the thickness of 10 mm are laid on the phi 25 threaded steel bars and the upper part of the 5# channel steel.
The specific construction method comprises the following steps: firstly, drilling holes with a row of intervals of 30 cm at the position 6.3 cm away from one side of an original 30m prefabricated T beam by using an electric drill, wherein the drilling depth is 5 cm, and phi 25 threaded reinforcing steel bars are inserted into the holes, and the length of each phi 25 threaded reinforcing steel bar is 45 cm; secondly, removing a rubber pipe in 5# channel steel on the side, close to the drilled hole, of the original 30m prefabricated T-beam platform, transversely connecting and reinforcing the steel bar inserted into the drilled hole and the channel steel of the original 30m prefabricated T-beam platform by adopting phi 25 threaded steel bars, namely adopting phi 25 threaded steel bars with the length of 10 cm, inserting one end of the steel bar into the 5# channel steel of the original 30m prefabricated T-beam platform and welding and reinforcing the steel bar, and welding and reinforcing the other end of the steel bar and the phi 25 threaded steel bar inserted into the drilled hole; thirdly, welding 5# channel steel with the length of 31m on the other side of the phi 25 twisted steel inserted into the drill hole; fourthly, a steel plate with the thickness of 10 mm is laid on the phi 25 threaded steel bar and the upper portion of the 5# channel steel, the steel plate is electrically welded and reinforced with the steel bar on the original 30m prefabricated T-beam platform base, the space between welding spots is 20 cm, the steel plate is ground through welding seams by a grinding wheel grinding machine after welding, and then the original 30m prefabricated T-beam platform base is modified into a 40mT beam prefabricated platform base.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. A remanufacturing method of a T-beam prefabricated pedestal is characterized in that,
calculating a length numerical difference M and a width numerical difference N between an original T-beam prefabrication pedestal and a target T-beam prefabrication pedestal to be remanufactured, adding two lengthening sections with the numerical difference M/2 length at two ends of the original T-beam prefabrication pedestal, and adding two widening sections with the numerical difference N/2 length at two sides of the original T-beam prefabrication pedestal;
when the two lengthening sections are constructed, an M/2 long 5# channel steel is pre-buried at two ends of the upper part of the existing pedestal respectively, and after the concrete strength reaches the design requirement, steel plates with the thickness of 10-20 mm are laid on the concrete and the upper part of the 5# channel steel;
during construction of the two widening sections, one side of each steel bar is transversely welded with a transverse phi 25 threaded steel bar, the newly embedded steel bar is welded and fixed with the original T-shaped beam prefabrication pedestal, the other side of the steel bar is welded and fixed with the No. 5 channel steel, and then steel plates with the thickness of 10-20 mm are paved on the phi 25 threaded steel bar and the upper portion of the No. 5 channel steel;
the construction method of the lengthening section and the widening section comprises the following steps:
firstly, drilling holes with a row of intervals of 30 cm at the side of an original T beam prefabricating bench by using an electric drill, wherein the drilling depth is 5 cm, and phi 25 threaded steel bars are inserted into the holes, and the length of each phi 25 threaded steel bar is 45 cm;
secondly, removing a rubber pipe in 5# channel steel of the original T-beam prefabrication pedestal, which is close to the side of the drilled hole, and transversely connecting and reinforcing the steel bar inserted into the drilled hole and the channel steel of the original T-beam prefabrication pedestal by adopting phi 25 threaded steel bars, namely, inserting one end of the steel bar into the 5# channel steel of the original T-beam prefabrication pedestal and welding and reinforcing the steel bar by adopting phi 25 threaded steel bars with the length of 10 cm, and welding and reinforcing the other end of the steel bar and the phi 25 threaded steel bars inserted into the drilled hole;
thirdly, welding 5# channel steel with the length of 31m on the other side of the phi 25 twisted steel inserted into the drill hole;
and (2) paving a steel plate with the thickness of 10 mm on the phi 25 threaded steel bar and the upper part of 5# channel steel, electrically welding and reinforcing the steel plate and the steel bar on the original T-beam prefabrication pedestal, wherein the space between welding points is 20 cm, and grinding the steel plate through welding seams by using a grinding wheel grinder after welding, so that the original 30m prefabricated T-beam pedestal is modified into a 40mT beam prefabrication pedestal.
2. A method of retrofitting a T-beam precast block according to claim 1,
adopt the plank sheathing when two extension sections are pour, carry out reinforcing bar processing production according to the prefabricated pedestal steel reinforcement skeleton texture size of target T roof beam in the reinforcement processing field, carry out the concrete placement construction after the installation reinforcing bar.
3. A T-beam prefabrication platform remanufacturing method as claimed in claim 1,
and phi 25 threaded steel bars are used as bottom supports during construction of the two widening sections, and the 5# channel steel legs are 3.7 cm wide.
4. A T-beam prefabrication platform remanufacturing method as claimed in claim 3,
the phi 25 threaded steel bar is buried at a distance of 6.3 cm from the original T beam prefabrication bench side.
5. A method of retrofitting a T-beam precast block according to claim 1,
the original T beam prefabricated base size is 31m × 50 cm × 40 cm, and the target T beam prefabricated base size is 41m × 60 cm × 40 cm.
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| CN202110186459.5A CN112976297B (en) | 2021-02-08 | 2021-02-08 | Remanufacturing method of T-beam prefabricated pedestal |
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| CN202110186459.5A CN112976297B (en) | 2021-02-08 | 2021-02-08 | Remanufacturing method of T-beam prefabricated pedestal |
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| CN113696302A (en) * | 2021-08-31 | 2021-11-26 | 中交路桥建设有限公司 | Construction method for changing prefabricated T beam into multi-span prefabricated box beam pedestal |
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| CN206825658U (en) * | 2017-05-31 | 2018-01-02 | 中铁四局集团路桥工程有限公司 | The prefabricated clipping adjustable T beams pedestal for becoming length T beams |
| CN211517947U (en) * | 2019-11-29 | 2020-09-18 | 广西路建工程集团有限公司 | Bridge case roof beam is prefabricated with shaped steel pedestal |
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| US6449791B1 (en) * | 2001-03-19 | 2002-09-17 | Dennis A. Vodicka | Prefabricated pier system |
| CN204054323U (en) * | 2014-06-28 | 2014-12-31 | 中铁十局集团第三建设有限公司 | Steel construction assembled beam making bench |
| CN205818147U (en) * | 2016-07-11 | 2016-12-21 | 李爱华 | A kind of highway special T girder prefabricated pedestal |
| CN106976157A (en) * | 2017-04-20 | 2017-07-25 | 南昌大学 | A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape |
| HUP1700206A1 (en) * | 2017-05-15 | 2018-11-29 | Dvb Delmagyarorszagi Vasbetonipari Kft | Portable structure for prefabrication of prestressed reinforced concrete beams |
| CN209408816U (en) * | 2018-09-29 | 2019-09-20 | 中铁二局集团有限公司 | A kind of precast pedestal suitable for more beam type T beams |
| CN110788984A (en) * | 2019-10-28 | 2020-02-14 | 中建三局基础设施建设投资有限公司 | Precast beam making pedestal side width device and implementation method thereof |
| CN211993513U (en) * | 2020-01-13 | 2020-11-24 | 安徽省路港工程有限责任公司 | Steel bench for beam slab prefabricating field |
| CN211868181U (en) * | 2020-03-26 | 2020-11-06 | 中交隧道工程局有限公司 | Prefabricated pedestal of highway case roof beam |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206825658U (en) * | 2017-05-31 | 2018-01-02 | 中铁四局集团路桥工程有限公司 | The prefabricated clipping adjustable T beams pedestal for becoming length T beams |
| CN211517947U (en) * | 2019-11-29 | 2020-09-18 | 广西路建工程集团有限公司 | Bridge case roof beam is prefabricated with shaped steel pedestal |
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