CN112976297A - Remanufacturing method of T-beam prefabricated pedestal - Google Patents
Remanufacturing method of T-beam prefabricated pedestal Download PDFInfo
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- CN112976297A CN112976297A CN202110186459.5A CN202110186459A CN112976297A CN 112976297 A CN112976297 A CN 112976297A CN 202110186459 A CN202110186459 A CN 202110186459A CN 112976297 A CN112976297 A CN 112976297A
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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
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Abstract
The application discloses a T-beam prefabricating pedestal remanufacturing method, which includes the steps of calculating a length numerical difference M and a width numerical difference N between an original T-beam prefabricating pedestal and a target T-beam prefabricating pedestal to be remanufactured, adding two lengthening sections with the numerical difference M/2 length to two ends of the original T-beam prefabricating pedestal, and adding two widening sections with the numerical difference N/2 length to two sides of the original T-beam prefabricating pedestal. The pedestal is simple in modification method, convenient to operate and easy to construct. The method saves the time for pouring reinforced concrete on a common pedestal and curing the strength of the concrete, 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-shaped 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 precast beam structure is various in form, the corresponding precast 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 is cast by adopting an expanded foundation form within the range of 2m of the end head 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 out a 30m prefabricated T-beam block and then to re-cast it in a 40m prefabricated T-beam block size, or to chisel out a portion of a 30m prefabricated T-beam block and then to re-cast it in a 40m prefabricated T-beam block size, which increases the amount of construction work and the time for construction work without doubt and brings about a certain economic loss.
Disclosure of Invention
The application mainly aims to provide a T-beam prefabricating pedestal remanufacturing method which is used for remanufacturing an original T-beam prefabricating pedestal into a required specification, shortening the construction period and saving 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, the two lengthened sections are poured by adopting a wood template, steel bars are machined and produced in a steel bar machining field according to the structural size of the steel bar framework of the target T-shaped beam prefabricating pedestal, and concrete pouring construction is carried out after the steel bars are installed.
Preferably, during construction of the two extension sections, two ends of the upper part of the existing pedestal are respectively embedded with one 5# channel steel with the length of M/2, and after the strength of concrete meets the design requirement, steel plates with the thickness of 10-20 mm are laid on the upper parts of the concrete and 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 wide.
Preferably, the phi 25 threaded steel bar is buried at a distance of 6.3 cm from the original T beam prefabrication pedestal 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 distance of 30 cm at the side of the original T-beam prefabricating bench at a distance of 6.3 cm 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;
fourthly, removing a rubber pipe in the 5# channel steel on the side, close to the drilled hole, of the original T-beam prefabricating pedestal, and transversely connecting and reinforcing the steel bar inserted into the drilled hole and the channel steel of the original T-beam prefabricating pedestal by adopting phi 25 deformed steel bars, namely, adopting phi 25 deformed steel bars with the length of 10 cm, inserting one end of the steel bar into the 5# channel steel of the original T-beam prefabricating pedestal and welding and reinforcing the steel bar, and welding and reinforcing the other end of the steel bar and the phi 25 deformed 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 with shortened construction period and saved cost, overcomes the defects and shortcomings existing in the construction method of reforming a conventional T-beam prefabricated pedestal into a required T-beam prefabricated pedestal, and reduces the occupied time and economic investment of prefabricated beam engineering due to pedestal reforming. The pedestal is simple in modification method, convenient to operate and easy to construct. The method saves the time for pouring reinforced concrete on a common pedestal and curing the strength of the concrete, 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.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve 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 their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a sectional view of the present invention in 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 such that embodiments of the application described herein may be used. 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 this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application 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 prefabricated T-beam pedestal of 30m into a prefabricated T-beam pedestal of 40 m. Since the size of the 30m prefabricated T beam bench is 31m × 50 cm × 40 cm (length × width × height), and the adopted size of the 40m prefabricated T beam bench 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; and secondly, widening sections on two sides of the original 30m prefabricated T-beam bench, for example, widening the original 30m prefabricated T-beam bench to 60 cm in width. 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 method is characterized in that the two sides of the original 30m prefabricated T-beam bench are widened to 60 cm, namely, the original 30m prefabricated T-beam bench is widened to 50 cm, 5# channel steel 3 is welded on one side of the upper portion of the widened 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 spacing of 30 cm at a distance of 6.3 cm 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 and the steel bar on the original 30m prefabricated T beam platform base are electrically welded and reinforced, the space between welding points is 20 cm, the steel plate is ground through welding lines by a grinding wheel grinding machine after being welded, and then the original 30m prefabricated T beam platform base is reformed 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, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A T-beam prefabrication pedestal remanufacturing method is characterized in that 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 are calculated, two lengthening sections with the numerical difference M/2 are added to two ends of the original T-beam prefabrication pedestal, and two widening sections with the numerical difference N/2 are added to two sides of the original T-beam prefabrication pedestal.
2. A method for remaking a T-beam prefabrication pedestal according to claim 1, wherein the two lengthened sections are poured by adopting a wooden template, steel bars are machined and produced in a steel bar machining field according to the structural size of a steel bar framework of the target T-beam prefabrication pedestal, and concrete pouring construction is carried out after the steel bars are installed.
3. The method for modifying a T-beam prefabrication pedestal of claim 2, wherein during the construction of the two lengthening sections, two ends of the upper part of the existing pedestal are respectively embedded with an M/2 long 5# channel steel, and after the concrete strength reaches the design requirement, steel plates with the thickness of 10-20 mm are laid on the upper parts of the concrete and the 5# channel steel.
4. The method for modifying the T-beam prefabrication pedestal of claim 3, wherein phi 25 thread steel bars are used as bottom supports during construction of the two widening sections, and the 5# channel steel legs are 3.7 cm in width.
5. The method for remanufacturing the T-beam prefabrication pedestal as claimed in claim 4, wherein the phi 25 threaded steel bar is buried at a distance of 6.3 cm from one side of the original T-beam prefabrication pedestal.
6. The method for modifying a T-beam prefabrication pedestal of claim 1, wherein during the construction of the two widening sections, one side of each steel bar is transversely welded with a transverse phi 25 screw steel bar to weld and fix the newly embedded steel bar with the original T-beam prefabrication pedestal, the other side of the steel bar is welded and fixed with the 5# channel steel bar, and then steel plates with the thickness of 10-20 mm are laid on the phi 25 screw steel bar and the upper part of the 5# channel steel bar.
7. The method for modifying the T-beam prefabrication bench as claimed in claim 1, wherein the original T-beam prefabrication bench size is 31m x 50 cm x 40 cm, and the target T-beam prefabrication bench size is 41m x 60 cm x 40 cm.
8. A T-beam prefabrication pedestal remanufacturing method as claimed in claim 7, wherein the construction method of the lengthened section and the widened section comprises the following steps: firstly, drilling holes with a row spacing of 30 cm at a distance of 6.3 cm from an original T beam prefabricating pedestal 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 T-beam prefabricating pedestal, adopting phi 25 deformed steel bars to transversely connect and reinforce the steel bars inserted into the drilled hole and the channel steel of the original T-beam prefabricating pedestal, namely adopting phi 25 deformed steel bars with the length of 10 cm, inserting one end of each steel bar into the 5# channel steel of the original T-beam prefabricating pedestal and welding and reinforcing the steel bars, and welding and reinforcing the other end of each steel bar and the phi 25 deformed 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 (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.
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116533368A (en) * | 2023-03-27 | 2023-08-04 | 四川省交通建设集团有限责任公司 | Adjustable 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 |
| CN116533368A (en) * | 2023-03-27 | 2023-08-04 | 四川省交通建设集团有限责任公司 | Adjustable pedestal |
| CN116533368B (en) * | 2023-03-27 | 2024-04-16 | 四川省交通建设集团有限责任公司 | Adjustable pedestal |
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|---|---|
| CN112976297B (en) | 2022-07-26 |
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