CN116104012B - Assembling method of space curve steel beam - Google Patents
Assembling method of space curve steel beam Download PDFInfo
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- CN116104012B CN116104012B CN202310040740.7A CN202310040740A CN116104012B CN 116104012 B CN116104012 B CN 116104012B CN 202310040740 A CN202310040740 A CN 202310040740A CN 116104012 B CN116104012 B CN 116104012B
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- 238000000034 method Methods 0.000 title claims abstract description 109
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 238000004080 punching Methods 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 11
- 230000010485 coping Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 241000309551 Arthraxon hispidus Species 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 7
- 210000001503 joint Anatomy 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D6/00—Truss-type bridges
Abstract
The invention relates to the technical field of bridges, and provides a method for assembling a space curve steel beam, which comprises the following steps: splicing a plurality of rod pieces together on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode; wherein: in each splicing procedure, corresponding rod pieces are spliced and fixed together by using punching nails and bolts; detecting whether the splicing position of the corresponding rod piece spliced by the splicing procedure is correct or not; and adjusting the rod piece with incorrect splicing position in the splicing process to the correct position, and fixing by using a punching nail and a bolt. After each assembling process is completed, the assembly, the inspection and the adjustment of the next assembling process are performed in time, and then the assembly, the inspection and the adjustment of the next assembling process are performed continuously, so that the assembly precision of the space curve steel beam is improved.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a method for assembling a space curve steel beam.
Background
In the prior art, the steel truss girder bridge is a structural form of a solid steel plate girder bridge according to a certain rule and a hollow mode, and the structure is a girder stress mode as a whole so as to bear bending moment and shearing force. Comprises a bridge deck, a support, a bridge pier and the like.
With the continuous development of technology, a space curve steel girder bridge gradually appears in the steel girder bridge, and the main difference is that the space curve steel girder mainly means that the steel girder is not only changed in the height direction, but also is curved on a plane, so that the manufacturing difficulty of the space curve steel girder is larger than that of a common steel girder bridge, and especially the assembly precision of the space curve steel girder is poor in control, so that the situation that the space curve steel girder is difficult to adjust due to on-site assembly butt joint after the assembly is completed occurs.
Disclosure of Invention
The invention aims to solve the problem that the existing assembly method of the space curve steel beam has poor assembly precision control.
In order to solve the above problems, the present invention provides a method for assembling a space curve steel beam, comprising:
splicing a plurality of rod pieces together on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode;
wherein:
in each splicing procedure, corresponding rod pieces are spliced and fixed together by using punching nails and bolts;
detecting whether the splicing position of the corresponding rod piece spliced by the splicing procedure is correct or not;
and adjusting the rod piece with incorrect splicing position in the splicing process to the correct position, and fixing by using a punching nail and a bolt.
Optionally, in each of the splicing processes, temporarily splicing the corresponding bars together using a punch pin and a bolt includes:
the corresponding rod piece is in a free state;
keeping the corresponding pre-camber of each point of the corresponding rod piece;
and temporarily splicing the corresponding rod pieces together by using punching nails and bolts.
Optionally, before the splicing the plurality of rods together on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode, the method comprises:
leveling the jig frame;
and establishing a measurement coordinate system on the jig frame, and splicing a plurality of rods together by using a bolt hole connection mode according to the measurement coordinate system in sequence according to a plurality of splicing procedures.
Optionally, the splicing the plurality of rods together on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode includes:
splicing a plurality of rods into an internode steel truss girder on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode;
the assembling method of the space curve steel beam further comprises the following steps: splicing a plurality of the internode steel trusses into a space curve steel beam;
the rod piece comprises a lower chord member, an upper chord member, a bridge deck plate, a web member, a lower parallel link and an inclined strut.
Optionally, the splicing the plurality of rods into the internode steel truss sequentially according to a plurality of splicing procedures by using a bolt hole connection mode on the jig comprises:
marking a beam system line for a pier top beam, hoisting and positioning the pier top beam to the jig frame according to the beam system line, and splicing the pier top beam and two lower chord members together;
marking chord system lines on a plurality of lower chords respectively, and placing and positioning the lower chords on the jig frame according to the chord system lines so that the lower chords are spliced with the cross beams respectively;
marking lower flat connector plate mounting system lines on the lower chord member and the pier top cross beam respectively, and splicing the lower flat connector plate, the pier top cross beam and the corresponding lower chord member together according to the lower flat connector plate mounting system lines;
sequentially hoisting a plurality of box-shaped web members, and splicing the box-shaped web members with the corresponding lower chords;
hoisting a plurality of upper chords, and splicing the upper chords with the corresponding box-shaped web members;
splicing a plurality of pier top reinforcing beams with the corresponding box-shaped web members;
the upper end and the lower end of the V-shaped transverse link rod are respectively connected with the corresponding upper chord member and the lower flat connector plate;
splicing the bridge deck and the two upper chords together.
Optionally, the marking the beam system line for the pier top beam, and hoisting and positioning the pier top beam to the jig frame according to the beam system line, and before splicing the pier top beam and the two lower chord members together, further includes:
marking a node system central line for the jig frame, and marking node central lines for the coordinates of the two lower chords;
placing the two lower chords on the jig frame, and enabling the node center line to coincide with the node system center line;
and detecting and keeping a set distance between the nodes of the two lower chord holders.
Optionally, in each of the splicing processes, the corresponding rod members are temporarily spliced together using a punch pin and a bolt, wherein the punch pin is not less than 10% of the total number of bolt holes, and the bolt is not less than 20% of the total number of bolt holes;
the total number of the bolt holes is the total number of the bolt holes at the corresponding temporary splicing position of the rod piece.
Optionally, in each of the splicing processes, the corresponding rod pieces are temporarily spliced together by using a punch pin and a bolt, and the method further includes:
checking and enabling the overlap ratio of the mounting holes of the rod piece which is not driven into the punching nails and the bolts to reach a set value.
Optionally, in each of the splicing processes, temporarily splicing the corresponding bars together using a punch pin and a bolt includes:
driving a punch pin in the center of a node of the rod member for installing Kong Kongqun;
a plurality of punches are driven around the mount Kong Kongqun in a distributed manner about the center of the node.
Optionally, before detecting whether the splicing position of the corresponding rod piece spliced in the splicing process is correct, the method further includes:
and storing a detection tool and a plurality of rods, which are used for detecting whether the splicing positions of the corresponding rods spliced in the splicing process are correct or not, under the same condition, so that the temperature of the detection tool is consistent with the temperature of the rods.
Compared with the prior art, the invention has the following technical effects:
aiming at the characteristic that the assembly method of the space curve steel beam generally adopts a bolt hole connection mode, in each assembly process of the space curve steel beam, corresponding rod pieces are temporarily spliced together by using punching nails and bolts on a jig frame, and the assembly of all the rod pieces is carried out on the jig frame by utilizing the characteristic that all the rod pieces are assembled on the jig frame, so that all the rod pieces take the jig frame as a reference, and the positioning accuracy of the assembly of a plurality of the rod pieces is ensured; and then detecting and adjusting the rod piece with incorrect splicing position to the correct position, and fixing the rod piece by using a punching nail and a bolt. Therefore, the assembly precision of the rod piece in each assembly process is effectively controlled, the assembly, the inspection and the adjustment are timely carried out after each assembly process is completed, then the assembly, the inspection and the adjustment of the next assembly process are continuously carried out, and the assembly precision of the space curve steel beam is improved, so that the situation that the assembly is difficult to adjust due to the fact that the on-site assembly is not butt joint is caused due to overlarge accumulated errors after all assembly is completed is fundamentally avoided.
Drawings
FIG. 1 is a schematic flow chart of the main procedures of the assembly method of the space curve steel beam of the invention;
FIG. 2 is a schematic flow chart of the main process steps of the internode steel joist of the present invention;
FIG. 3 is a schematic perspective view of an unassembled steel joist of the present invention;
fig. 4 is a schematic perspective view of an assembled steel truss girder between joints according to the present invention.
Reference numerals illustrate: 10. a lower chord mount; 20. a pier top beam; 30. a lower chord; 40. a lower flat joint plate; 50. box-shaped web members; 60. an upper chord; 70. v-shaped cross link; 80. bridge deck.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or illustrated embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.
In the drawings of the specification, the Z axis represents the vertical direction, that is, the up-down direction, and the positive direction of the Z axis (that is, the arrow of the Z axis points) represents the negative direction of the Z axis (that is, the direction opposite to the positive direction of the Z axis); the Y-axis in the drawings represents the front-to-back direction; the X-axis in the drawing represents the left-right direction; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the invention.
Referring to fig. 1, to solve the above technical problems, this embodiment provides a method for assembling a space curve steel beam, including:
splicing a plurality of rod pieces together on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode;
wherein:
s100, in each splicing procedure, corresponding rod pieces are spliced and fixed together by using punching nails and bolts;
s200, detecting whether the splicing position of the corresponding rod piece spliced in the splicing process is correct;
and S300, adjusting the rod piece with incorrect splicing position in the current splicing process to the correct position, and fixing by using a punching nail and a bolt.
The punch pins and bolts used in S300 may be the original punch pins and bolts in S100, or may be newly added punch pins and bolts after the rod is adjusted to the correct position.
In the embodiment, aiming at the characteristic that the assembly method of the space curve steel beam generally adopts a bolt hole connection mode, in each assembly procedure of the space curve steel beam, corresponding rod pieces are temporarily spliced together by using punching nails and bolts; and then detecting and adjusting the rod piece with incorrect splicing position to the correct position, and fixing the rod piece by using a punching nail and a bolt. Therefore, the assembly precision of the rod piece in each assembly process is effectively controlled, the assembly, the inspection and the adjustment are timely carried out after each assembly process is completed, then the assembly, the inspection and the adjustment of the next assembly process are continuously carried out, and the assembly precision of the space curve steel beam is improved, so that the situation that the assembly is difficult to adjust due to the fact that the on-site assembly is not butt joint is caused due to overlarge accumulated errors after all assembly is completed is fundamentally avoided.
Referring to fig. 1, further, in each splicing process, temporarily splicing the corresponding bars together using the punch pin and the bolt includes:
the corresponding rod piece is in a free state;
keeping the corresponding pre-camber of each point of the corresponding rod piece;
and temporarily splicing the corresponding rods together by using the punching nails and the bolts.
Considering that the rod piece can generate certain degree of downwarping due to dead weight and other factors, the reverse pre-arching of the downwarping is arranged, namely, each point of the corresponding rod piece keeps the corresponding pre-arching degree, so that the deformation of the rod piece is counteracted, and the rod piece can be ensured to be straight after the assembly of the rod piece is completed. Thereby improving the rod piece assembling precision in each assembling procedure.
Specifically, the hydraulic jack and the steel plate are used for adjusting the pre-camber of each point of the corresponding rod.
Referring to fig. 1, further, before splicing the plurality of rods together in the jig frame sequentially according to the plurality of splicing processes using the bolting mode, the method includes:
leveling the jig frame;
and establishing a measurement coordinate system on the jig frame, and splicing a plurality of rod pieces together by using a bolt hole connection mode according to the measurement coordinate system in sequence according to a plurality of splicing procedures.
The purpose of establishing a measurement coordinate system is to unify a reference, all rod piece positioning is based on the reference, a plurality of rod pieces are spliced together on a jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode, and the superposition errors of a plurality of coordinate systems caused by using a plurality of different coordinate systems in the rod piece splicing process are avoided. Therefore, the accurate positioning of each rod piece is ensured, and even if the rod piece interfaces have errors, the positions of the interfaces only need to be adjusted.
Specifically, a measurement coordinate system is established, the control point coordinates are precisely positioned through the total station, and the measurement coordinate system is established on the jig frame and mainly comprises measurement control points, measurement origins and fixed measurement points, so that precise measurement control is achieved.
Referring to fig. 1 and 2, further, splicing the plurality of rods together on the jig frame sequentially according to a plurality of splicing processes using a bolting mode includes:
splicing a plurality of rods into an internode steel truss girder on the jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode;
the assembling method of the space curve steel beam further comprises the following steps: splicing a plurality of internode steel trusses into a space curve steel beam;
the rods comprise a lower chord 30, an upper chord 60, a bridge deck 80, web members, a lower tie and diagonal braces.
The characteristics that the internode steel truss is a beam section and the space curve steel beam is composed of a plurality of internode steel trusses are utilized, so that the control of the assembly precision of each internode steel truss is realized, and the integral assembly precision of the space curve steel beam is ensured. Meanwhile, the internode steel trusses are used as assembling units, the purpose of simplifying the assembling process can be achieved, after the internode steel trusses are assembled in a factory respectively, the corresponding internode steel trusses are transported to the site for assembly respectively, so that the assembling process is greatly simplified, the assembling time of the space curve steel beams is saved, and the characteristic of modular operation of assembling the space curve steel beams is achieved.
Referring to fig. 1 and 2, further, splicing the plurality of rods into the inter-node steel truss beam sequentially according to a plurality of splicing processes using a bolting mode includes:
step 20: marking a beam system line for the pier top beam 20, hoisting and positioning the pier top beam 20 on a jig frame according to the beam system line, and splicing the pier top beam 20 with the two lower chord members 10;
step 30: marking chord system lines on the plurality of lower chords 30 respectively, and placing and positioning the plurality of lower chords 30 on the jig frame according to the chord system lines so that the plurality of lower chords 30 are spliced with the pier top cross beam 20 respectively;
process 40: marking lower flat header plate mounting system lines on the lower chord 30 and the pier top cross beam 20 respectively, and splicing the lower flat header plate 40, the pier top cross beam 20 and the corresponding lower chord 30 together according to the lower flat header plate mounting system lines;
step 50: sequentially hoisting a plurality of box-shaped web members 50, and splicing the box-shaped web members 50 with the corresponding lower chords 30;
step 60: hoisting a plurality of upper chords 60, and splicing the upper chords 60 with the corresponding box web members 50;
step 70: splicing a plurality of pier top reinforcing beams with corresponding box-shaped web members 50;
step 80: the upper and lower ends of the V-shaped cross link 70 are respectively connected with the corresponding upper chord 60 and lower flat header plate 40;
process 90: the bridge deck 80 is spliced with the two upper chords 60.
The steps S100 to S300 are performed every time the assembly process is performed for a total of 7 assembly processes from the process 20 to the process 80.
Referring to fig. 2 to 4, further, marking the coping beams 20 with beam system lines, and hoisting and positioning the coping beams 20 to the jig frame according to the beam system lines, before splicing the coping beams 20 with the two lower chord seats 10, further includes:
step 10: marking a node system center line for the jig frame, and marking node center lines for the two lower chord holders 10; placing two lower chord holders 10 on the jig frame, and enabling the node center line to coincide with the node system center line; a set distance is detected and maintained between the nodes of the two bottom chords seats 10.
The process 10 ensures that the two lower chord holders 10 are positioned accurately on the jig frame, thereby ensuring that the subsequent process 20 to the process 90 are positioned accurately at the standard assembling positions of the two lower chord holders 10.
In summary, the concrete method for splicing the plurality of rods into the internode steel truss by using the bolt hole connection mode sequentially according to the splicing procedures on the jig comprises the following steps:
step 10: marking a node system center line for the jig frame, and marking node center lines for the two lower chord holders 10; placing two lower chord holders 10 on the jig frame, and enabling the node center line to coincide with the node system center line; a set distance is detected and maintained between the nodes of the two bottom chords seats 10.
Step 20: marking a beam system line for the pier top beam 20, hoisting and positioning the pier top beam 20 on a jig frame according to the beam system line, and splicing the pier top beam 20 with the two lower chord members 10;
step 30: marking chord system lines on the plurality of lower chords 30 respectively, and placing and positioning the plurality of lower chords 30 on the jig frame according to the chord system lines so that the plurality of lower chords 30 are spliced with the cross beam respectively;
this includes measuring the dimensions of the pitch, truss width, flatness, diagonal, etc. and adjusting the splice plates between the bottom chords 30 without error, and temporarily connecting them with nails and bolts.
Process 40: marking lower flat header plate mounting system lines on the lower chord 30 and the pier top cross beam 20 respectively, and splicing the lower flat header plate 40, the pier top cross beam 20 and the corresponding lower chord 30 together according to the lower flat header plate mounting system lines;
specifically, the lower flat link parts on the large mileage side and the small mileage side are sequentially hoisted according to the ground sample, the lower flat link splice plates are practically matched after the dimension inspection is correct, and temporary connection is carried out by using punching nails and code plates.
Step 50: sequentially hoisting a plurality of box-shaped web members 50, and splicing the box-shaped web members 50 with the corresponding lower chords 30;
in addition, it is necessary to temporarily support the web members to prevent the web members from overturning, hoist the plurality of box-shaped web members 50, temporarily connect the box-shaped web members 50 to the plurality of lower chords 30 by splice plates, and temporarily support the web members to prevent the web members from overturning.
Step 60: hoisting a plurality of upper chords 60, and splicing the upper chords 60 with the corresponding box web members 50;
specifically, after the measurement of the truss height, the truss width, the diagonal line, the node center distance and other dimensions are adjusted to be qualified, the upper chord member 60 and the box web member 50 are fixed by using a temporary matching member in a welding mode, and a splice plate in a bolting mode of the upper chord member 60 and the box web member 50 is matched. The upper chord member 60 is matched with a splice plate in the form of bolting the box web member 50, temporary connection is performed by punching nails and bolts, and welding seams reserved at the web member joint plates and the like are welded.
Step 70: splicing a plurality of pier top reinforcing beams with corresponding box-shaped web members 50;
specifically, a pier top reinforcing transverse link is installed, and the sequence of a long rod piece, a large rod piece, a short rod piece and a small rod piece is arranged; and the lower layer structure is firstly installed in sequence, then the upper layer structure is sequentially installed, temporary supports are used for fixing, the reinforcing beam is prevented from overturning, the joint of each rod piece in a welding mode is temporarily connected by using a temporary matching piece or a code plate after being adjusted in place, the joint of the bolting mode is temporarily connected by using a splice plate, and welding seams reserved in the positions such as a transverse joint plate are welded.
Step 80: the upper and lower ends of the V-shaped cross link 70 are respectively connected with the corresponding upper chord 60 and lower flat header plate 40;
the connection position of the V-shaped cross section and the lower cross section is temporarily connected by a splice plate, and the splice plate at the connection position of the upper chord member 60 is temporarily connected by a punch pin and a bolt after being matched.
Process 90: the bridge deck 80 is spliced with the two upper chords 60.
And then assembling one another for the next internode steel truss by adopting the procedures 10 to 90.
Further, in each splicing process, the corresponding rod pieces are temporarily spliced together using the punch nails and the bolts, and the punch nails used are not less than 10% of the total number of the bolt holes, and the bolts used are not less than 20% of the total number of the bolt holes;
the total number of the bolt holes is the total number of the bolt holes at the corresponding temporary splicing position of the rod piece.
Preferably, the bolts used are 10% -15% of the total number of bolt holes, and the bolts used are 20% -30% of the total number of bolt holes.
The punching nails are not less than 10% of the total number of the bolt holes, and the bolts are not less than 20% of the total number of the bolt holes, so that the rod piece is firmly positioned and fixed, and meanwhile, the problem of low assembly efficiency caused by excessive punching nails and bolts is avoided; in addition, because a certain number of bolts and punching nails are required to be installed on each rod piece, if the bolts and the punching nails installed in the earlier stage are too many, the rod pieces are large in weight after being assembled, and therefore the transfer of the rod pieces is not facilitated.
Referring to fig. 1, further, in each of the splicing processes, the corresponding bars are temporarily spliced together using a punch pin and a bolt, and further comprising:
checking and enabling the overlap ratio of the mounting holes of the rod piece which is not driven into the punching nails and the bolts to reach a set value.
Specifically, the mounting holes of the rod pieces which are not driven into the punch pins and the bolts are checked for overlap by using a hole tester,
the hole tester checks that the coincidence ratio of the bolt holes of the Liang Zhuhe combined beam is about 100% free passing; whereas the bolt holes of the bridge deck system and the coupling system of the hole tester with the aperture smaller than the designed aperture should pass through the hole tester with the aperture smaller than the designed aperture by 1.0mm at 100% of freedom; the spliced bolt holes of the girder web of the plate girder can pass through the plate girder of the hole testing device with the aperture smaller than the designed aperture by 0.75mm freely by 100%, and other bolt holes can pass through the hole testing device with the aperture smaller than the designed aperture by 1.5mm freely by 100%.
Referring to fig. 1, further, in each of the splicing processes, temporarily splicing the corresponding bars together using a punch pin and a bolt includes:
driving a punch pin in the center of a node of the rod member for installing Kong Kongqun;
a plurality of punches are driven around the mount Kong Kongqun in a distributed manner about the center of the node.
By driving the punching nails at the center of the node of the rod piece for installing Kong Kongqun, the accurate positioning of the center of the installation Kong Kongqun is realized, and then, a plurality of punching nails are driven to the periphery of the installation Kong Kongqun in a distributed manner by the center of the node, so that the whole installation Kong Kongqun is accurately positioned and firmly positioned.
Referring to fig. 1, further, before detecting whether the splicing position of the corresponding rod piece spliced by the splicing procedure is correct, the method further includes:
and storing a detection tool and a plurality of rods, which are used for detecting whether the splicing positions of the corresponding rods spliced in the splicing process are correct or not, under the same condition, so that the temperature of the detection tool is consistent with the temperature of the rods.
It should be noted that, the detection tool may include a total station and a tape measure, so configured that the temperature of the detection tool is consistent with the temperature of a plurality of rods, thereby preventing the temperature of the detection tool and the plurality of rods from being inconsistent, and causing inaccurate detection of the splice position of the corresponding rods, so as to ensure the accuracy of detection.
Therefore, the assembling method of the space curve steel beam in the embodiment generally comprises the following steps:
leveling the jig frame;
establishing a measurement coordinate system on a jig frame;
and splicing the plurality of rod pieces together by using a bolt hole connection mode according to a plurality of splicing procedures in sequence according to the measurement coordinate system.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (8)
1. The assembling method of the space curve steel beam is characterized by comprising the following steps of:
leveling the jig frame;
a measurement coordinate system is established on the jig frame, and a plurality of rod pieces are spliced together in a bolt hole connection mode according to the measurement coordinate system in sequence according to a plurality of splicing procedures; the measurement coordinate system mainly comprises a measurement control point, a measurement origin and a fixed measurement point;
the method comprises the following steps of splicing a plurality of rod pieces together on a jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode: wherein,
splicing a plurality of rods on a jig frame sequentially according to a plurality of splicing procedures by using a bolt hole connection mode to form an internode steel truss;
the assembling method of the space curve steel beam further comprises the following steps: splicing a plurality of the internode steel trusses into a space curve steel beam;
the rod piece comprises a lower chord member (30), an upper chord member (60), a bridge deck plate (80), a web member, a lower parallel link and an inclined strut;
in each splicing procedure, corresponding rod pieces are spliced and fixed together by using punching nails and bolts;
detecting whether the splicing position of the corresponding rod piece spliced by the splicing procedure is correct or not;
and adjusting the rod piece with incorrect splicing position in the splicing process to the correct position, and fixing by using a punching nail and a bolt.
2. The assembling method of the space curve steel beam according to claim 1, wherein,
in each of the splicing processes, temporarily splicing the corresponding bars together using a punch pin and a bolt includes:
the corresponding rod piece is in a free state;
keeping the corresponding pre-camber of each point of the corresponding rod piece;
and temporarily splicing the corresponding rod pieces together by using punching nails and bolts.
3. The assembling method of space curve steel beams according to claim 1, wherein the splicing the plurality of rods into the inter-node steel truss beam by using the bolt hole connection mode sequentially according to the splicing process comprises the following steps:
marking a beam system line for a pier top beam (20), hoisting and positioning the pier top beam (20) on the jig frame according to the beam system line, and splicing the pier top beam (20) with two lower chord members (10);
marking chord system lines on a plurality of lower chords (30) respectively, and placing and positioning the lower chords (30) on the jig frame according to the chord system lines so that the lower chords (30) are spliced with the pier top cross beams (20) respectively;
marking lower flat header plate mounting system lines on the lower chords (30) and the pier top cross beams (20) respectively, and splicing the lower flat header plates (40), the pier top cross beams (20) and the corresponding lower chords (30) together according to the lower flat header plate mounting system lines;
sequentially hoisting a plurality of box-shaped web members (50), and splicing the box-shaped web members (50) with the corresponding lower chords (30);
hoisting a plurality of upper chords (60), and splicing the upper chords (60) with the corresponding box-shaped web members (50);
splicing a plurality of pier top reinforcing beams with the corresponding box-shaped web members (50);
the upper end and the lower end of the V-shaped transverse link rod (70) are respectively connected with the corresponding upper chord member (60) and the lower flat joint head plate (40);
-splicing together the bridge deck (80) with two of said upper chords (60).
4. A method of assembling a space curve steel girder according to claim 3, wherein the step of marking the beam system line with the pair of coping beams (20) and hoisting and positioning the coping beams (20) to the jig frame according to the beam system line, and before the step of assembling the coping beams (20) with the two lower chord members (10) further comprises:
marking a node system central line for the jig frame, and marking node central lines for the two lower chord holders (10);
placing two of said lower chord mounts (10) on said jig frame with said node centerlines coincident with said node system centerlines;
and detecting and keeping a set distance between the nodes of the two lower chord holders (10).
5. The assembling method of space curve steel beams according to claim 1, wherein in each of the assembling processes, the corresponding bars are temporarily assembled together using nails and bolts, and the nails used are not less than 10% of the total number of bolt holes, and the bolts used are not less than 20% of the total number of bolt holes;
the total number of the bolt holes is the total number of the bolt holes at the corresponding temporary splicing position of the rod piece.
6. The method of splicing space curve steel beams according to claim 5, wherein in each of the splicing processes, corresponding ones of the bars are temporarily spliced together using a punch pin and a bolt, further comprising:
checking and enabling the overlap ratio of the mounting holes of the rod piece which is not driven into the punching nails and the bolts to reach a set value.
7. The method of splicing space curve steel beams according to claim 5, wherein said temporarily splicing the corresponding bars together using a punch pin and a bolt in each of the splicing processes comprises:
driving the punch pin at the center of the node of the rod member where Kong Kongqun is mounted;
and driving a plurality of the nails around the installation Kong Kongqun in a distributed manner with the center of the joint.
8. The method for splicing a space curve steel beam according to any one of claims 1 to 7, wherein,
before detecting whether the splicing position of the corresponding rod piece spliced by the splicing process is correct, the method further comprises the following steps:
and storing a detection tool and a plurality of rods, which are used for detecting whether the splicing positions of the corresponding rods spliced in the splicing process are correct or not, under the same condition, so that the temperature of the detection tool is consistent with the temperature of the rods.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100108930A (en) * | 2009-03-31 | 2010-10-08 | 김학권 | The method of manufacturing for main girder with prefabricated truss type structure and the method of constructing for bridge by using the upper method |
| CN108330809A (en) * | 2017-12-27 | 2018-07-27 | 中铁宝桥集团有限公司 | One kind can the economic convenient type plate girder manufacture structure of high accuracy positioning |
| CN111021223A (en) * | 2019-12-12 | 2020-04-17 | 中铁九桥工程有限公司 | Manufacturing method of hyperbolic all-welded structural steel truss girder |
| CN114434105A (en) * | 2022-01-28 | 2022-05-06 | 中铁宝桥（扬州）有限公司 | Method for manufacturing hyperbolic chord member of bridge bolted steel truss girder |
-
2023
- 2023-01-12 CN CN202310040740.7A patent/CN116104012B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100108930A (en) * | 2009-03-31 | 2010-10-08 | 김학권 | The method of manufacturing for main girder with prefabricated truss type structure and the method of constructing for bridge by using the upper method |
| CN108330809A (en) * | 2017-12-27 | 2018-07-27 | 中铁宝桥集团有限公司 | One kind can the economic convenient type plate girder manufacture structure of high accuracy positioning |
| CN111021223A (en) * | 2019-12-12 | 2020-04-17 | 中铁九桥工程有限公司 | Manufacturing method of hyperbolic all-welded structural steel truss girder |
| CN114434105A (en) * | 2022-01-28 | 2022-05-06 | 中铁宝桥（扬州）有限公司 | Method for manufacturing hyperbolic chord member of bridge bolted steel truss girder |
Non-Patent Citations (3)
| Title |
|---|
| 空间异型管桁架空中散装施工工法;付志英;《绿色环保建材》(第11期);全文 * |
| 重庆菜园坝长江大桥的制作工艺;张瑶;《钢结构》(第3期);第46-50、103页 * |
| 集贤路跨派河桥钢桁拱桥施工关键技术;王鹏等;《城市道桥与防洪》(第1期);全文 * |
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