CN113957795B - Method and system for preparing beam by using large-span beam type bracket - Google Patents
Method and system for preparing beam by using large-span beam type bracket Download PDFInfo
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- CN113957795B CN113957795B CN202111103926.XA CN202111103926A CN113957795B CN 113957795 B CN113957795 B CN 113957795B CN 202111103926 A CN202111103926 A CN 202111103926A CN 113957795 B CN113957795 B CN 113957795B
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The application relates to a method and a system for preparing a beam by a large-span beam type bracket, which relate to the technical field of bridge construction, and comprise the following steps: a steel pipe column structure for supporting is arranged on the bottom surface of a preset large-span main beam; a girder support structure is arranged on the top surface of the large-span girder; a cast-in-situ mold device for pouring is arranged on the main girder support structure; and moving the girder support structure and the cast-in-situ mold device to a preset casting area by utilizing the transverse moving device, and casting in the cast-in-situ mold device. The device is used in a combined mode through the corresponding device, pouring is directly carried out on the large-span main beam, pouring parts are moved, preparation work before cast-in-situ is simplified, and a safe, reliable and stable construction platform and a space woven by reinforcing steel bars and templates for cast-in-situ are provided for cast-in-situ.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a method and a system for preparing a beam by a large-span beam bracket method.
Background
The steel pipe piles of the common cast-in-situ support structure are arranged in a Bailey beam structure mode, the pier positions of the high pier support are scattered and spliced, the influence of weather is large, pile foundations are needed to be adopted, the address condition is complex, the construction period is long, the high-altitude construction operation of the traditional construction mode is more, and the high-altitude construction method has high potential safety hazard
In bridge construction environment, traditional support construction erection has high requirements on the ground, needs to be leveled and firm on site, and has large consumption of support templates for construction, long construction period and great limitation on bridges and high piers in water areas.
Therefore, in order to solve the problems of wave height, water depth, rapid flow and obvious tide in the cast-in-situ construction of the large-span bridge box girder in the severe marine environment, a new girder manufacturing technical scheme is urgently needed to meet the current construction requirements.
Disclosure of Invention
The application provides a girder preparation method and system of a large-span girder type bracket, which are combined by corresponding devices, directly cast on a large-span girder and move a casting part, simplify the preparation work before cast-in-situ, provide a safe, reliable and stable construction platform for cast-in-situ and set up the space woven by steel bars and templates for cast-in-situ.
In a first aspect, the present application provides a method for preparing a beam by using a long span beam type bracket, the method comprising the following steps:
a steel pipe column structure for supporting is arranged on the bottom surface of a preset large-span main beam;
a girder support structure is arranged on the top surface of the large-span girder;
a cast-in-situ mold device for pouring is arranged on the main girder support structure;
and moving the girder support structure and the cast-in-situ mold device to a preset casting area by utilizing a transverse moving device, and casting in the cast-in-situ mold device.
Preferably, the steel pipe column structure and the girder support structure are respectively positioned on the bottom surface and the top surface of the same area of the large-span girder.
Further, the method comprises the following steps:
and transverse limiting pieces are arranged at two ends of a moving area of the top surface of the large-span girder, which is positioned at the transverse moving device and used for moving the girder support structure and the cast-in-situ mold device.
Specifically, the cast-in-situ mold device comprises:
the cast-in-situ bottom die device is positioned on the top surface of the main beam bracket structure;
and the cast-in-situ side mold devices are arranged at two sides of the cast-in-situ bottom mold device.
Specifically, the traversing device comprises:
the device comprises a traversing cushion block, a cushion block connecting system, a jack, an anchor seat and a steel strand.
In a second aspect, the present application provides a long span beam bracket beam making system, the system comprising:
the steel pipe column structure is arranged on the bottom surface of the preset large-span main beam and used for supporting;
the girder support structure is arranged on the top surface of the large-span girder;
the cast-in-situ mold device is arranged on the main beam support structure and used for pouring;
and the transverse moving device is used for moving the girder support structure and the cast-in-situ mold device on the top surface of the large-span girder.
Further, the system further comprises:
the steel pipe column structure and the girder support structure are respectively positioned on the bottom surface and the top surface of the same area of the large-span girder.
Further, the system further comprises:
the transverse limiting piece is arranged on the top surface of the large-span girder and positioned at two ends of a moving area of the transverse moving device for moving the girder support structure and the cast-in-situ mold device.
Specifically, the cast-in-situ mold device comprises:
the cast-in-situ bottom die device is positioned on the top surface of the main beam bracket structure;
and the cast-in-situ side mold devices are arranged at two sides of the cast-in-situ bottom mold device.
Further, the traversing device includes:
the device comprises a traversing cushion block, a cushion block connecting system, a jack, an anchor seat and a steel strand.
The beneficial effects that technical scheme that this application provided brought include:
the device is used in a combined mode through the corresponding device, pouring is directly carried out on the large-span main beam, pouring parts are moved, preparation work before cast-in-situ is simplified, and a safe, reliable and stable construction platform and a space woven by reinforcing steel bars and templates for cast-in-situ are provided for cast-in-situ.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for preparing beams by a large span beam bracket method provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a girder system prepared by a long span girder type bracket provided in an embodiment of the present application;
FIG. 3 is a construction schematic diagram of a beam making system for a long span beam type bracket method for performing a traversing operation provided in an embodiment of the present application;
FIG. 4 is a schematic connection diagram of a beam making system for a long span beam type bracket method for traversing operation provided in an embodiment of the present application;
in the figure:
A. a large span main beam; B. left-width highway box girder; C. road piers; D. railway box girders; 1. a steel pipe column structure; 10. a bolster; 11. a steel pipe column; 12. a holding frame; 13. a wall-attached structure; 14. pile top distribution beams; 15. a hooking beam; 2. a main beam support structure; 3. a cast-in-situ mold device; 30. a cast-in-situ bottom die device; 31. a cast-in-situ side mold device; 4. a traversing device; 40. traversing the cushion block; 41. a cushion block connection system; 42. an anchor seat; 43. steel strand; 44. a transverse limiting member; 5. and a sand cylinder.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Embodiments of the present application are described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a method and a system for preparing a girder by a large-span girder bracket method, which are combined by corresponding devices, directly cast on a large-span girder and move a casting part, simplify the preparation work before cast-in-situ, provide a safe, reliable and stable construction platform for cast-in-situ and set up the space woven by reinforcing steel bars and templates for cast-in-situ.
In order to achieve the technical effects, the general idea of the application is as follows:
a method for preparing a beam by a large-span beam type bracket method comprises the following steps:
s1, arranging a steel pipe column structure 1 for supporting on the bottom surface of a preset large-span main beam A;
s2, arranging a girder support structure 2 on the top surface of the large-span girder A;
s3, arranging a cast-in-situ mold device 3 for pouring on the main beam support structure 2;
s4, moving the girder support structure 2 and the cast-in-situ mold device 3 to a preset casting area by utilizing the transverse moving device 4, and carrying out casting operation in the cast-in-situ mold device 3.
Embodiments of the present application are described in further detail below with reference to the accompanying drawings.
In a first aspect, referring to fig. 1, an embodiment of the present application provides a method for preparing a beam by using a long span beam type bracket, the method including the following steps:
s1, arranging a steel pipe column structure 1 for supporting on the bottom surface of a preset large-span main beam A;
s2, arranging a girder support structure 2 on the top surface of the large-span girder A;
s3, arranging a cast-in-situ mold device 3 for pouring on the main beam support structure 2;
s4, moving the girder support structure 2 and the cast-in-situ mold device 3 to a preset casting area by utilizing the transverse moving device 4, and carrying out casting operation in the cast-in-situ mold device 3.
It should be noted that the cast-in-situ mold device 3 can be used for casting and manufacturing a large-span bridge box girder.
According to the embodiment of the application, the devices are used in a combined mode, pouring is directly carried out on the large-span main beam A, the pouring piece is moved, the preparation work before cast-in-situ is simplified, and a safe, reliable and stable construction platform and a space woven by the steel bars and the templates for cast-in-situ are provided for cast-in-situ.
The embodiment of the application mainly solves the problems of wave height, water depth, urgent flow and obvious tide in the cast-in-situ construction of the large-span bridge box girder in the severe marine environment, can simplify the preparation work before cast-in-situ, and provides a safe, reliable and stable construction platform for cast-in-situ and a space for building reinforcing steel bars and templates for cast-in-situ.
The construction method is suitable for the situation of poor natural conditions and low construction work efficiency in the sea area, and can effectively reduce the number of days of construction operation;
the steel pipe column structure 1 and the main beam support structure 2 can be integrally assembled on land, and the construction method of integral hoisting of the large-scale floating crane is utilized to change the water construction into the factory construction and the shore construction, so that the quality of the support structure is ensured, and the construction period is shortened;
the steel pipe column structure 1 and the main beam support structure 2 are integrally constructed, so that offshore operation time is reduced, and overhead operation risk is reduced;
the steel pipe column structure 1 and the main beam support structure 2 can reduce material investment, save construction cost and have good economic benefit;
in addition, compared with the method of the Bailey beam and the steel pipe column, the transverse moving device 4 saves steel and construction cost;
the steel pipe column structure 1 and the main beam support structure 2 are combined, a supporting structure is not needed, the requirements on the terrain are low, the overall hoisting requirements on hoisting equipment are high, the steel pipe column structure is suitable for the construction of the high pier large-span box girder in the complex sea area, and the steel pipe column structure has certain guiding significance on the field construction of the same type.
It should be noted that, the embodiment of the application further includes the following steps:
after the prestress tensioning of the large-span bridge box girder is completed, the main girder support structure 2 moves to the traversing device 4, and the cast-in-situ side mold device 31 is removed;
traversing the girder support structure 2 to the left side to the railway center line position by utilizing a traversing device 4;
and the main beam support structure 2 and the cast-in-situ bottom die device 30 of the cast-in-situ die device 3 are arranged by using a railway beam surface crane.
It should be noted that, in the embodiment of the present application, the steel pipe column structure 1 includes a bolster 10, a steel pipe column 11, a holding frame 12, a wall attaching structure 13, and a pile top distribution beam 14;
the bolster 10 is tightly held with the highway pier body and the support bolster by stretching the finish rolling deformed bar, the pretension of single finish rolling deformed bar is 30t, and in addition, in order to prevent the bolster 10 from tilting up, a hook beam 15 is arranged outside a transverse bridge;
the steel pipe upright post 11, the holding frame 12 and the wall attaching structure 13 are combined, and the pile top distribution beam 14 and the backing beam 10 are connected to play a supporting role;
the pile top distribution beam 14 is positioned at the bottom of the large-span main beam A;
the mounting sequence of the steel pipe column structure 1 is as follows: the beam comprises a bolster 10, a pier top steel pipe column 11, a wall attaching structure 13, a steel pipe bracket of a beam surface, a connecting system and a pile top distribution beam 14;
the steel pipe support is assembled by sections of wharfs, the bridge deck crane is integrally hoisted and mounted, the middle upright post is integrally assembled, and the left upright post and the right upright post are connected into a whole by a connecting system;
the pile top distributing beams 14 are installed in three sections from left to right in sequence.
Specifically, the girder support structure 2 is formed by adopting a girder, parallel connection and distribution girder mode, and the first span and the middle span girders are reworked by the original movable mould frame girders.
The traversing device 4 comprises traversing cushion blocks 40, cushion block connecting systems 41, jacks, anchor seats 42 and steel stranded wires 43,
after the transverse moving device 4 finishes the prestress tensioning of the large-span bridge box girder, the girder of the girder support structure 2 falls onto the transverse moving cushion block 40,
and the main beam bracket structure 2 is transversely moved from the left width to the right width design position by utilizing the transverse moving device 4.
It should be noted that, the steel pipe column structure 1 and the girder support structure 2 are respectively located at the bottom surface and the top surface of the same area of the large-span girder a.
Further, the method comprises the following steps:
transverse limiting pieces 44 are arranged at two ends of the top surface of the large-span girder A, which are positioned in the moving area of the transverse moving device 4 for moving the girder support structure 2 and the cast-in-situ mold device 3.
Specifically, the cast-in-situ mold apparatus 3 includes:
a cast-in-situ bottom die device 30 positioned on the top surface of the main beam bracket structure 2;
cast-in-situ side mold devices 31 disposed on either side of the cast-in-situ bottom mold device 30.
Specifically, the traversing device 4 includes:
cushion blocks, cushion block connecting systems, jacks, anchor seats and steel stranded wires.
Specifically, the method for preparing the girder by the large-span girder type bracket in the embodiment of the application comprises the following steps when in specific implementation:
firstly, constructing a steel pipe column structure 1, wherein the steel pipe column structure 1 comprises a bolster 10, a steel pipe column 11, a holding frame 12, a wall attaching structure 13 and a pile top distribution beam 14;
the bolster 10 is tightly held with the highway pier body and the support bolster by stretching the finish rolling deformed bar, the pretension of single finish rolling deformed bar is 30t, in addition, in order to prevent the bolster 10 from tilting up, a hook beam 15 is arranged outside the transverse bridge
The upper structure main beam, main beam parallel connection and distribution beam form of the steel pipe column structure 1 are subjected to integral assembly of a cast-in-situ bracket in advance, the upper structure of the cast-in-situ bracket is assembled at one time, and then 2200t floating cranes are utilized to integrally hoist, transport and lower the cast-in-situ bracket to the designed pier position
Secondly, after the hoisting of the steel pipe column structure 1 is completed, moving the main beam structure of the steel pipe column structure 1, installing a traversing system, traversing the main beam structure to a construction design position by utilizing a traversing device 4, and ensuring the synchronous operation of the large mileage and the small mileage in the traversing process;
after the horizontal moving is in place, the main girder and the bottom die system are lifted to 5cm beyond the top surface of the sand cylinder 5 through 200 jacks, the sand cylinder 5 is installed, the oil return beam falls on the sand cylinder 5 with the elevation adjusted, after the left-width highway box girder, namely the large-span bridge box girder on the left side of the bridge, is constructed as shown in B in fig. 3, the cast-in-situ bracket main girder and the bottom die system adopt the sand cylinder 5 to complete the falling frame, the main girder falls onto a horizontal moving cushion block 40, and then the horizontal moving device is used for horizontal moving to the construction position of the right-width highway box girder, namely the large-span bridge box girder on the right side of the bridge;
58 sand cylinders are needed for the single-hole support falling frame, 4 jacks are needed for 200t, and two sets of small and large mileage of the traversing device 4 are needed;
524 sand cylinders are required in the cast-in-situ bracket construction section; the bolster, the bolster connecting system and the tensioning anchor 6 are sleeved; 4 jacks of 200t, a matched oil pump and a steel strand are used in an inverted mode;
wherein, sideslip device 4 includes sideslip cushion 40, cushion connection 41, jack, anchor pad 42 and steel strand wires 43.
Thirdly, pre-pressing the cast-in-situ mold device 3, wherein the purpose of pre-pressing the cast-in-situ mold device 3 is to eliminate the influence of inelastic deformation of a bracket, a template and the like;
measuring the actual elastic deformation value of the bracket as the basis for setting the pre-arch of the beam template system; meanwhile, the strength, rigidity and stress stability of the support are checked, whether the bearing capacity of the support can meet the design requirement is verified, and the construction safety is ensured;
the pre-pressing of the cast-in-situ bracket is carried out by adopting a hole-by-hole pre-pressing method, namely, the weight is carried out three times, and each section is divided into different load areas according to the structural size of the box girder;
the weight is pre-pressed by a cast-in-situ bracket by adopting a sand bag, and the load of each area is graded and loaded according to 1.1 times of the maximum construction load of the cast-in-situ bracket;
and after each hole cast-in-situ bracket is assembled for the first time, the construction total load which is not less than 1.1 times is adopted for prepressing.
Fourthly, dismantling the cast-in-situ mold device 3 after pouring work is completed;
and after the whole main beam of the cast-in-situ mold device 3 is lowered to the ground by using a jack, the main beam of the cast-in-situ mold device 3 is disassembled by using a ground crawler crane or is disassembled after being scattered at the railway beam surface position by using a beam surface crawler crane.
In a second aspect, referring to fig. 2 to 4, an embodiment of the present application provides a girder preparation system for a long span girder preparation method based on the girder preparation method for a long span girder preparation method according to the first aspect, the system comprising:
the steel pipe column structure 1 is arranged on the bottom surface of the preset large-span main beam A and used for supporting;
the girder support structure 2 is arranged on the top surface of the large-span girder A;
the cast-in-situ mold device 3 is arranged on the main beam bracket structure 2 and used for pouring;
and the transverse moving device 4 is used for moving the girder support structure 2 and the cast-in-situ mold device 3 on the top surface of the large-span girder A.
It should be noted that the cast-in-situ mold device 3 can be used for casting and manufacturing a large-span bridge box girder.
According to the embodiment of the application, the devices are used in a combined mode, pouring is directly carried out on the large-span main beam A, the pouring piece is moved, the preparation work before cast-in-situ is simplified, and a safe, reliable and stable construction platform and a space woven by the steel bars and the templates for cast-in-situ are provided for cast-in-situ.
The embodiment of the application mainly solves the problems of wave height, water depth, urgent flow and obvious tide in the cast-in-situ construction of the large-span bridge box girder in the severe marine environment, can simplify the preparation work before cast-in-situ, and provides a safe, reliable and stable construction platform for cast-in-situ and a space for building reinforcing steel bars and templates for cast-in-situ.
The construction method is suitable for the situation of poor natural conditions and low construction work efficiency in the sea area, and can effectively reduce the number of days of construction operation;
the steel pipe column structure 1 and the main beam support structure 2 can be integrally assembled on land, and the construction method of integral hoisting of the large-scale floating crane is utilized to change the water construction into the factory construction and the shore construction, so that the quality of the support structure is ensured, and the construction period is shortened;
the steel pipe column structure 1 and the main beam support structure 2 are integrally constructed, so that offshore operation time is reduced, and overhead operation risk is reduced;
the steel pipe column structure 1 and the main beam support structure 2 can reduce material investment, save construction cost and have good economic benefit;
in addition, compared with the method of the Bailey beam and the steel pipe column, the transverse moving device 4 saves steel and construction cost;
the steel pipe column structure 1 and the main beam support structure 2 are combined, a supporting structure is not needed, the requirements on the terrain are low, the overall hoisting requirements on hoisting equipment are high, the steel pipe column structure is suitable for the construction of the high pier large-span box girder in the complex sea area, and the steel pipe column structure has certain guiding significance on the field construction of the same type.
It should be noted that, in the embodiment of the present application, the steel pipe column structure 1 includes a bolster 10, a steel pipe column 11, a holding frame 12, a wall attaching structure 13, and a pile top distribution beam 14;
the bolster 10 is tightly held with the highway pier body and the support bolster by stretching the finish rolling deformed bar, the pretension of single finish rolling deformed bar is 30t, and in addition, in order to prevent the bolster 10 from tilting up, a hook beam 15 is arranged outside a transverse bridge;
the steel pipe upright post 11, the holding frame 12 and the wall attaching structure 13 are combined, and the pile top distribution beam 14 and the backing beam 10 are connected to play a supporting role;
the pile top distribution beam 14 is positioned at the bottom of the large-span main beam A;
the mounting sequence of the steel pipe column structure 1 is as follows: the beam comprises a bolster 10, a pier top steel pipe column 11, a wall attaching structure 13, a steel pipe bracket of a beam surface, a connecting system and a pile top distribution beam 14;
the steel pipe support is assembled by sections of wharfs, the bridge deck crane is integrally hoisted and mounted, the middle upright post is integrally assembled, and the left upright post and the right upright post are connected into a whole by a connecting system;
the pile top distributing beams 14 are installed in three sections from left to right in sequence.
Specifically, the girder support structure 2 is formed by adopting a girder, parallel connection and distribution girder mode, and the first span and the middle span girders are reworked by the original movable mould frame girders.
The traversing device 4 comprises traversing cushion blocks 40, cushion block connecting systems 41, jacks, anchor seats 42 and steel stranded wires 43,
after the transverse moving device 4 finishes the prestress tensioning of the large-span bridge box girder, the girder of the girder support structure 2 falls onto the transverse moving cushion block 40,
and the main beam bracket structure 2 is transversely moved from the left width to the right width design position by utilizing the transverse moving device 4.
It should be noted that, the steel pipe column structure 1 and the girder support structure 2 are respectively located at the bottom surface and the top surface of the same area of the large-span girder a.
Further, the system further comprises:
the steel pipe column structure 1 and the girder support structure 2 are respectively positioned on the bottom surface and the top surface of the same area of the large-span girder A.
Further, the system further comprises:
the transverse limiting pieces 44 are arranged on the two ends of the moving area of the transverse moving device 4, where the transverse limiting pieces 44 are arranged on the top surface of the large-span girder A, and the moving area of the transverse moving device 4, where the girder support structure 2 and the cast-in-situ mold device 3 move.
Specifically, the cast-in-situ mold apparatus 3 includes:
a cast-in-situ bottom die device 30 positioned on the top surface of the main beam bracket structure 2;
cast-in-situ side mold devices 31 disposed on either side of the cast-in-situ bottom mold device 30.
Specifically, the traversing device 4 includes:
traversing spacer 40, spacer connection 41, jack, anchor 42 and steel strand 43.
It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for preparing a beam by a large span beam type bracket method, which is characterized by comprising the following steps:
a steel pipe column structure (1) for supporting is arranged on the bottom surface of a preset large-span main beam (A);
a girder support structure (2) is arranged on the top surface of the large-span girder (A);
a cast-in-situ mold device (3) for pouring is arranged on the main beam support structure (2);
the transverse moving device (4) is utilized to move the main beam support structure (2) and the cast-in-situ mold device (3) to a preset casting area, and casting operation is carried out in the cast-in-situ mold device (3);
the steel pipe column structure (1) and the girder support structure (2) are respectively positioned on the bottom surface and the top surface of the same area of the large-span girder (A).
2. The method for preparing the beam by using the large span beam type bracket according to claim 1, wherein the method further comprises the following steps:
and transverse limiting pieces (44) are arranged at two ends of a moving area of the large-span girder (A) where the transverse moving device (4) moves the girder support structure (2) and the cast-in-situ mold device (3).
3. A method of girder fabrication with a large span beam bracket as claimed in claim 1, characterized in that said cast-in-place mould device (3) comprises:
the cast-in-situ bottom die device (30) is positioned on the top surface of the main beam bracket structure (2);
cast-in-situ side mold devices (31) arranged at two sides of the cast-in-situ bottom mold device (30).
4. A method for making a beam with a long span beam bracket as claimed in claim 1, wherein said traversing means (4) comprises:
a traversing cushion block (40), a cushion block connecting system (41), a jack, an anchor seat (42) and a steel strand (43).
5. A longspan beam-fabrication system using the longspan beam-fabrication method of claim 1, the system comprising:
the steel pipe column structure (1) is arranged on the bottom surface of the preset large-span main beam (A) and used for supporting;
the girder support structure (2) is arranged on the top surface of the large-span girder (A);
the cast-in-situ mold device (3) is arranged on the main beam support structure (2) and used for pouring;
a traversing device (4) for moving the girder support structure (2) and the cast-in-situ mold device (3) on the top surface of the large-span girder (A);
the steel pipe column structure (1) and the girder support structure (2) are respectively positioned on the bottom surface and the top surface of the same area of the large-span girder (A).
6. The long span beam bracket girder system of claim 5, further comprising:
the transverse limiting piece (44) is arranged on the top surface of the large-span main beam (A), and is positioned at two ends of a moving area of the transverse moving device (4) for moving the main beam support structure (2) and the cast-in-situ mold device (3).
7. The girder system according to claim 5, wherein the cast-in-place mould device (3) comprises:
the cast-in-situ bottom die device (30) is positioned on the top surface of the main beam bracket structure (2);
cast-in-situ side mold devices (31) arranged at two sides of the cast-in-situ bottom mold device (30).
8. The girder-making system for a long span girder type bracket as claimed in claim 5, wherein said traversing means (4) comprises:
a traversing cushion block (40), a cushion block connecting system (41), a jack, an anchor seat (42) and a steel strand (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111103926.XA CN113957795B (en) | 2021-09-18 | 2021-09-18 | Method and system for preparing beam by using large-span beam type bracket |
Applications Claiming Priority (1)
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