CN113059317A - Manufacturing method of integral node type box-type rod piece of steel truss arch bridge - Google Patents
Manufacturing method of integral node type box-type rod piece of steel truss arch bridge Download PDFInfo
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- CN113059317A CN113059317A CN202110291080.0A CN202110291080A CN113059317A CN 113059317 A CN113059317 A CN 113059317A CN 202110291080 A CN202110291080 A CN 202110291080A CN 113059317 A CN113059317 A CN 113059317A
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Abstract
The invention discloses a method for manufacturing an integral node type box-type member of a steel truss arch bridge, which comprises the steps of cutting a steel plate, and then correcting by using a shaped steel plate correction platform; the welding of the integral node type box-type unit of the steel truss arch bridge is carried out by a welding platform of the steel truss arch bridge box-type unit, and a box-type member fixing support and an adjustable threaded sleeve support rod are adopted for fixing and processing; and after the welding of the integral node type box-type unit of the steel truss arch bridge is finished, the box-type unit of the steel truss arch bridge is corrected through a box-type unit correction platform of the steel truss arch bridge, and finally, the box-type unit of the steel truss arch bridge is installed. Compared with the traditional construction method, the integral node type box-shaped member of the steel truss arch bridge and the manufacturing method thereof can ensure the processing precision of on-site members, simultaneously accelerate the member manufacturing speed, reduce the later installation and construction difficulty, save the construction cost and obtain higher economic and technical benefits.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a manufacturing method of an integral node type box-shaped rod piece of a steel truss arch bridge.
Background
The bridge is one of municipal infrastructure, and its main function is not only alleviate urban traffic pressure, can also optimize city space landscape environment. In recent years, with the improvement of urbanization construction level, the style of the bridge gradually presents the characteristic of diversity, and the bridge structure tends to be diversified under the influence of factors such as regional culture and climate difference. The steel truss arch bridge has the characteristics of reasonable structural stress, strong integrity, material saving, small self weight and the like, has better adaptability to soft soil foundations, and is widely adopted. Meanwhile, the design and formation process of the bridge can only be considered according to a certain standard state, the actual formation process of the bridge is complex and has high technical difficulty (precise component processing, welding of a steel truss arch bridge box-type unit, correction of the steel truss arch bridge box-type unit and the like), a plurality of and variable influence factors and a plurality of problems of structural strength, stability and safety are encountered, and the process of the large system engineering needs to be controlled to ensure that the normal operation and the bridge formation state (linear type and internal force) of the large system engineering meet the design requirements.
Disclosure of Invention
The invention aims to make up the defects of the prior art and provides a method for manufacturing an integral node type box-type rod piece of a steel truss arch bridge. Compared with the traditional construction method, the integral node type box-shaped member of the steel truss arch bridge and the manufacturing method thereof are adopted, the machining precision of the on-site member can be ensured, the member manufacturing speed is increased, the later installation and construction difficulty is reduced, the construction cost is saved, and higher economic and technical benefits are obtained.
The invention is realized by the following technical scheme:
a manufacturing method of an integral node type box-type rod piece of a steel truss arch bridge comprises the following specific steps:
(1) cutting the steel plate to obtain a steel plate to be corrected;
(2) after the straightening steel plate is cut, adopting a shaped steel plate straightening platform to carry out straightening treatment;
(3) the corrected steel plates adopt a steel truss arch bridge box type unit welding platform to carry out integral node type box type unit welding construction on the steel truss arch bridge;
(4) after the welding of the integral node type box-type unit of the steel truss arch bridge is finished, the box-type unit of the steel truss arch bridge is corrected through a box-type unit correction platform;
(5) and finally, mounting the integral node type box type unit of the steel truss arch bridge.
In order to ensure that the manufacturing precision is inspected, the influence of accumulated errors in the manufacturing of the steel truss girder is predicted and controlled, the arch ribs are in a bridge linear shape and are smoothly installed on site, the full-bridge arch ribs are subjected to sectional trial assembly, and the full-bridge arch ribs are transported to a construction site for site installation after the trial assembly is completed.
Cutting the steel plate in the step (1), wherein the cutting method specifically comprises the following steps: and (3) blanking and precisely blanking by using a numerical control cutting machine, performing overall linear lofting on the steel truss arch bridge by using a computer, performing three-dimensional lofting on each node, and drilling bolt holes by using a three-dimensional numerical control drilling machine.
The sizing steel plate correcting platform comprises a first concrete foundation, wherein a first steel bottom plate is placed on the top surface of the first concrete foundation, first L-shaped steel pillars are welded on the first steel bottom plate at intervals, and first L-shaped steel cross beams are welded on the upper parts of the first L-shaped steel pillars; and each L-shaped steel beam I is connected with a steel plate fixing support.
The steel plate fixing support comprises a first threaded rod, a movable fixing steel plate, a first U-shaped notch base and a first adjustable bolt, wherein the movable fixing steel plate moves up and down on the first threaded rod; the steel plate fixing support is used for adjusting and moving on the edge of a flange of the L-shaped steel beam according to the position of a steel plate to be corrected, the steel plate fixing support is fixed through a first adjustable bolt, a movable fixed steel plate is placed on the upper portion of the steel plate to be corrected, the movable fixed steel plate and a first threaded rod are fixed through a first fixed bolt, a second adjustable bolt is arranged on the movable fixed steel plate, the steel plate to be corrected is further fixed through the second adjustable bolt after the movable fixed steel plate is fixed, and the steel plate to be corrected is corrected by adopting a flame correction method.
And an inclined support I is fixedly connected between the upper end of the L-shaped steel strut and the steel base plate I.
The steel truss arch bridge box type unit welding platform comprises a second concrete foundation, a second steel base plate is placed on the top surface of the second concrete foundation, second L-shaped steel pillars are welded on the second steel base plate at intervals, second L-shaped steel beams are welded on the upper portions of the second L-shaped steel pillars, and each second L-shaped steel beam is connected with a box type rod piece fixing support.
The box-type rod piece fixing support comprises a second threaded rod, a second L-shaped movable fixing steel plate, a second U-shaped notch base and a third adjustable bolt, wherein the second L-shaped movable fixing steel plate moves up and down on the second threaded rod, the second U-shaped notch base is fixed at the lower end of the second threaded rod, the second U-shaped notch base is installed on the flange of the second L-shaped cross beam, a second threaded hole is formed in the side plate at the upper end of the second U-shaped notch base, the side plate at the lower end of the second U-shaped notch base is located below the flange of the second L-shaped cross beam, the third adjustable bolt is arranged in the threaded hole of the side plate at the upper end, and the flange of the second L-shaped cross beam and the side plate; the box-type member fixing support is adjusted and moved on two flanges of the L-shaped steel beam according to the position of a box-type unit side plate of the steel truss arch bridge, the two side edges are fixed through an adjustable bolt III, a box-type unit bottom plate of the steel truss arch bridge is fixed through U-shaped notch bases II on two sides, then the box-type unit side plate of the steel truss arch bridge is hoisted, the upper part of the box-type unit side plate of the steel truss arch bridge is fixed through the box-type member fixing support, and the lower part of the box-type unit side plate of the steel truss; the L-shaped movable fixed steel plate is placed on the upper portion of the box type unit side plate of the steel truss arch bridge, and the L-shaped movable fixed steel plate and the threaded rod II are fixed through a second fixing bolt; the adjustable bolts IV are arranged on the L-shaped movable fixed steel plate, and after the L-shaped movable fixed steel plate is used for preliminarily fixing the box type unit side plates of the steel truss arch bridge, the box type unit side plates of the steel truss arch bridge are further fixed through the adjustable bolts IV on the L-shaped movable fixed steel plate; welding construction is carried out after steel purlin arch bridge box type unit bottom plate, steel purlin arch bridge box type unit curb plate are fixed to be accomplished, and after steel purlin arch bridge box type unit bottom plate, steel purlin arch bridge box type unit curb plate welding were accomplished, not hard up adjustable bolt four and fixing bolt two, heighten and 180 degrees rotation fixing the movable fixed steel sheet position of L type, hoist and mount steel purlin arch bridge box type unit roof and welding at last.
And a second inclined support is fixedly connected between the upper end of the second L-shaped steel support and the second steel base plate.
The box type unit correcting platform of the steel truss arch bridge comprises a concrete foundation III, a steel bottom plate III is placed on the top surface of the concrete foundation III, H-shaped steel pillars are welded on the steel bottom plate III at intervals, and steel base plates are welded at the top ends of the H-shaped steel pillars; a plurality of steel pipe piles are arranged on two sides of the H-shaped steel support at intervals, the lower ends of the steel pipe piles penetrate through a concrete foundation III, 4U-shaped placing steel plates are welded on the upper portion and the lower portion of each steel pipe pile at intervals, and jacks are placed on the inner sides of the U-shaped placing steel plates; placing the integral node type box type unit of the steel truss arch bridge on the H-shaped steel strut through a crane, and correcting the integral node type box type unit of the steel truss arch bridge through a jack; the position and the number of the jacks are dynamically adjusted according to the height or the line shape and the correction condition of the integral node type box type unit of the steel truss arch bridge.
The H-shaped steel support is reinforced through connecting and supporting; and the steel pipe piles are fixed through tie bars.
The invention has the advantages that: 1. the steel plate of the integral node type box-type member of the steel truss arch bridge is fixed and corrected on the shaped steel plate correction platform, the operation is simple, and the flatness and the later-stage welding quality of the steel plate are improved;
2. the integral node type box type member plate unit adopts a steel truss arch bridge box type unit welding platform, so that the processing precision of on-site members can be ensured, the construction progress is accelerated, the construction difficulty is reduced, and the construction cost is saved;
3. the integral node type box type member plate unit correction adopts the steel truss arch bridge box type unit correction platform, wherein the position and the number of the jacks can be dynamically adjusted according to the height or the line shape of the integral node type box type unit of the steel truss arch bridge and the correction condition, the precision of the steel truss arch bridge box type unit can be ensured, the construction speed is accelerated, and the construction cost is saved.
Drawings
FIG. 1 is a schematic cross-sectional layout of a modular steel plate orthotic platform;
FIG. 2 is a schematic diagram of the arrangement of the vertical planes of the sizing steel plate straightening platform; (ii) a
FIG. 3 is a schematic cross-sectional view of a steel plate fixing bracket;
FIG. 4 is a longitudinal elevation view of a steel plate fixing bracket;
FIG. 5 is a schematic diagram of the arrangement of the transverse elevation of a welding platform of the steel truss arch bridge box-type unit;
FIG. 6 is a longitudinal vertical plane layout schematic diagram of a welding platform of a box type unit of the steel truss arch bridge;
FIG. 7 is a schematic cross-sectional view of a box-type rod fixing bracket;
FIG. 8 is a longitudinal elevation view of a box-type rod fixing bracket;
FIG. 9 is a schematic diagram of the arrangement of the transverse elevation of the box type unit straightening platform of the steel truss arch bridge;
FIG. 10 is a schematic diagram of the arrangement of the longitudinal vertical surfaces of the box type unit straightening platforms of the steel truss arch bridge;
FIG. 11 is a flow chart of the construction process of the present invention.
Detailed Description
The invention will be further described with reference to the following examples, wherein the conventional construction methods of measuring and setting out, foundation processing, component hoisting, component coating and the like are not described in detail. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
FIG. 1 is a schematic cross-sectional layout of a modular steel plate orthotic platform; FIG. 2 is a schematic diagram of the arrangement of the vertical planes of the sizing steel plate straightening platform; FIG. 3 is a schematic view of a steel plate fixing bracket; FIG. 4 is a schematic diagram of the arrangement of the transverse elevation of a welding platform of the steel truss arch bridge box-type unit; FIG. 5 is a schematic diagram of the arrangement of the transverse elevation of a welding platform of the steel truss arch bridge box-type unit; FIG. 6 is a schematic view of a box-type rod fixing bracket; FIG. 7 is a schematic diagram of the arrangement of the transverse elevation of the box type unit straightening platform of the steel truss arch bridge; FIG. 8 is a schematic diagram of the arrangement of the longitudinal vertical surfaces of the box type unit straightening platforms of the steel truss arch bridge; FIG. 9 is a flow chart of the construction process of the present invention. Referring to the figures, the integral node type box-type member of the steel truss arch bridge is manufactured, wherein after the steel plate 1 to be corrected is cut, a shaped steel plate correction platform is adopted for correction; welding the corrected steel plate to an integral node type box unit of the steel truss arch bridge, constructing by adopting a welding platform of the steel truss arch bridge box unit, and fixing and processing by a box member fixing support 2 and an adjustable threaded sleeve support rod 3; and after the welding of the integral node type box units of the steel truss arch bridge is finished, the box units of the steel truss arch bridge are corrected through a box unit correction platform of the steel truss arch bridge, and finally, the integral node type box units of the steel truss arch bridge are installed.
As shown in fig. 1-4, the regularized steel plate straightening platform adopts a first concrete foundation 4, a first steel bottom plate 5 is placed on the upper portion of the first concrete foundation 4, first L-shaped steel pillars 6 are welded on the first steel bottom plate 5 at intervals, the first L-shaped steel pillars 6 are reinforced by inclined struts 7 and connected with the first steel bottom plate 5, and first L-shaped steel cross beams 8 are welded on the upper portions of the first L-shaped steel pillars 6; the steel plate fixing support 15 is composed of a first threaded rod 9, a movable fixing steel plate 10, a first U-shaped notch base 11 and a first adjustable bolt 12, the movable fixing steel plate 10 can move up and down on the first threaded rod 9, the first U-shaped notch base 11 is installed on an 8-edge flange of a first L-shaped steel beam, the steel plate fixing support 15 can adjust and move on the 8-edge flange of the first L-shaped steel beam according to the position of a steel plate 1 to be corrected, the movable fixing steel plate 10 is fixed through the first adjustable bolt 12 and placed on the upper portion of the steel plate 1 to be corrected, the movable fixing steel plate 10 and the first threaded rod 9 are fixed through a first fixed bolt 13, the steel plate 1 to be corrected is further fixed through a second adjustable bolt 14 on the movable fixing steel plate 10 after the movable fixing steel plate 10 is;
as shown in fig. 5-8, the steel truss arch bridge box-type unit welding platform adopts a second concrete foundation 16, a second steel bottom plate 17 is placed on the upper portion of the second concrete foundation 16, second L-shaped steel pillars 18 are welded on the second steel bottom plate 17 at intervals, the second L-shaped steel pillars 18 are reinforced by second inclined struts 19 and connected with the second steel bottom plate 17, and second L-shaped steel beams 20 are welded on the upper portions of the second L-shaped steel pillars 18; the box-type rod fixing support 2 consists of a second threaded rod 22, a movable L-type fixing steel plate 23, a second U-shaped notch base 24 and a third adjustable bolt 25, the movable L-type fixing steel plate 23 can move up and down on the second threaded rod 22, the second U-shaped notch base 24 is installed on the flange of the second L-shaped steel beam 20, the box-type rod fixing support 2 can adjust and move on the flange of the second L-shaped steel beam 20 according to the position of a box-type unit side plate 26 of the steel truss arch bridge, the box-type rod fixing support is fixed through the third adjustable bolt 25, a box-type unit bottom plate 27 of the steel truss arch bridge can be fixed through the second U-shaped notch bases 24 on two sides, then the box-type unit side plate 26 of the steel truss arch bridge is hoisted, the upper part of the box-type unit side plate 26 of the steel truss; the L-shaped movable fixing steel plate 23 is placed on the upper portion of the steel truss arch bridge box type unit side plate 26, the L-shaped movable fixing steel plate 23 and the threaded rod II 22 are fixed through the fixing bolt II 28, and after the L-shaped movable fixing steel plate 23 is preliminarily fixed on the steel truss arch bridge box type unit side plate 26, the steel truss arch bridge box type unit side plate 26 is further fixed through the adjustable bolt IV 21 on the L-shaped movable fixing steel plate; welding construction is carried out after the steel truss arch bridge box type unit bottom plate 27 and the steel truss arch bridge box type unit side plate 26 are fixed, after the steel truss arch bridge box type unit bottom plate 27 and the steel truss arch bridge box type unit side plate 26 are welded, the adjustable bolt IV 21 and the fixing bolt II 28 are loosened, the position of the L-shaped movable fixing steel plate 23 is heightened and fixed in a 180-degree rotating mode, and finally, the steel truss arch bridge box type unit top plate is hoisted and welded;
as shown in fig. 9-10, the box-type unit straightening platform for the steel truss arch bridge adopts a third concrete foundation 29, a third steel bottom plate 30 is placed on the third concrete foundation 29, H-shaped steel pillars 31 are welded on the third steel bottom plate 30 at intervals, the H-shaped steel pillars 31 are arranged at intervals and are reinforced by connecting supports 32, and steel backing plates 33 are welded on the upper parts of the H-shaped steel pillars 31; the steel pipe piles 34 penetrate through the concrete foundation III 29 and are arranged on two sides of the H-shaped steel support column 31 at intervals, and the steel pipe piles 34 are fixed through tie bars 35; 4U-shaped laying steel plates 36 are welded at the upper part of the steel pipe pile 34 at intervals, and a jack 37 is placed in each U-shaped laying steel plate 36; the integral node box type unit 38 of the steel truss arch bridge is placed on the H-shaped steel strut 31 through a crane, and the integral node box type unit 38 of the steel truss arch bridge is corrected through a jack 37. Wherein the position and number of the jacks 37 can be dynamically adjusted according to the height or line shape of the integral node type box type unit 38 of the steel truss arch bridge and the correction condition.
As shown in fig. 11, the invention also provides a construction method of the integral node type box member of the steel truss arch bridge, which mainly comprises the following construction steps:
step one, construction preparation: checking equipment such as cranes and cutting machines, checking related components, and performing basic treatment on related processing sites.
Step two, steel plate cutting construction: the bridge is beneficial to blanking and precise blanking of a numerical control cutting machine, integral linear lofting is carried out on the bridge by using a computer, three-dimensional lofting is carried out on each node, and the integral manufacturing linear of the structure, especially the mutual position relation of the parallel connection joint and the transverse connection joint, is ensured. And drilling a hole group positioning hole at one end of a main bolt hole of the rod piece by adopting a three-dimensional numerical control drilling machine.
Step three, steel plate straightening construction: the regularization steel plate correction platform adopts a concrete foundation I4, a steel bottom plate I5 is placed on the upper portion of the concrete foundation I4, L-shaped steel pillars I6 are welded on the steel bottom plate I5 at intervals, the L-shaped steel pillars I6 are reinforced and connected with the steel bottom plate I5 through inclined supports I7, and L-shaped steel cross beams I8 are welded on the upper portions of the L-shaped steel pillars I6; the steel plate fixing support 15 is composed of a first threaded rod 9, a movable fixing steel plate 10, a first U-shaped notch base 11 and a first adjustable bolt 12, the movable fixing steel plate 10 can move up and down on the first threaded rod 9, the first U-shaped notch base 11 is installed on an 8-edge flange of a first L-shaped steel beam, the steel plate fixing support 15 can adjust and move on the 8-edge flange of the first L-shaped steel beam according to the position of a steel plate 1 to be corrected, the movable fixing steel plate 10 is fixed through the first adjustable bolt 12 and placed on the upper portion of the steel plate 1 to be corrected, the movable fixing steel plate 10 and the first threaded rod 9 are fixed through a first fixed bolt 13, the steel plate 1 to be corrected is further fixed through a second adjustable bolt 14 on the movable fixing steel plate 10 after the movable fixing steel plate 10 is;
step four, welding the box type units of the steel truss arch bridge: the steel truss arch bridge box type unit welding platform adopts a second concrete foundation 16, a second steel bottom plate 17 is placed on the upper portion of the second concrete foundation 16, second L-shaped steel pillars 18 are welded on the second steel bottom plate 17 at intervals, the second L-shaped steel pillars 18 are reinforced and connected with the second steel bottom plate 17 through second inclined supports 19, and second L-shaped steel beams 20 are welded on the upper portions of the second L-shaped steel pillars 18; the box-type rod fixing support 2 consists of a second threaded rod 22, a movable L-type fixing steel plate 23, a second U-shaped notch base 24 and a third adjustable bolt 25, the movable L-type fixing steel plate 23 can move up and down on the second threaded rod 22, the second U-shaped notch base 24 is installed on the flange of the second L-shaped steel beam 20, the box-type rod fixing support 2 can adjust and move on the flange of the second L-shaped steel beam 20 according to the position of a box-type unit side plate 26 of the steel truss arch bridge, the box-type rod fixing support is fixed through the third adjustable bolt 25, a box-type unit bottom plate 27 of the steel truss arch bridge can be fixed through the second U-shaped notch bases 24 on two sides, then the box-type unit side plate 26 of the steel truss arch bridge is hoisted, the upper part of the box-type unit side plate 26 of the steel truss; the L-shaped movable fixing steel plate 20 is placed on the upper portion of the steel truss arch bridge box type unit side plate 26, the L-shaped movable fixing steel plate 20 and the threaded rod II 22 are fixed through the fixing bolt II 28, and after the L-shaped movable fixing steel plate 23 is preliminarily fixed on the steel truss arch bridge box type unit side plate 26, the steel truss arch bridge box type unit side plate 26 is further fixed through the adjustable bolt IV 21 on the L-shaped movable fixing steel plate; welding construction is carried out after the steel truss arch bridge box type unit bottom plate 27 and the steel truss arch bridge box type unit side plate 26 are fixed, after the steel truss arch bridge box type unit bottom plate 27 and the steel truss arch bridge box type unit side plate 26 are welded, the adjustable bolt IV 21 and the fixing bolt II 28 are loosened, the position of the L-shaped movable fixing steel plate 23 is heightened and fixed in a 180-degree rotating mode, and finally, the steel truss arch bridge box type unit top plate is hoisted and welded;
step five, correcting construction of the box type unit of the steel truss arch bridge: the box type unit rectification platform of the steel truss arch bridge adopts a third concrete foundation 29, a third steel bottom plate 30 is placed on the upper portion of the third concrete foundation 29, H-shaped steel pillars 31 are welded on the third steel bottom plate 30 at intervals, the H-shaped steel pillars 31 are arranged at intervals and are reinforced through connecting supports 32, and steel backing plates 33 are welded on the upper portions of the H-shaped steel pillars 31; the steel pipe piles 34 penetrate through the concrete foundation 29 and are arranged on two sides of the H-shaped steel strut 31 at intervals, and the steel pipe piles 34 are fixed through tie bars 35; 4U-shaped laying steel plates 36 are welded at the upper part of the steel pipe pile 34 at intervals, and a jack 37 is placed in each U-shaped laying steel plate 36; the integral node box type unit 38 of the steel truss arch bridge is placed on the H-shaped steel strut 31 through a crane, and the integral node box type unit 38 of the steel truss arch bridge is corrected through a jack 37. The position and the number of the jacks can be dynamically adjusted according to the height or the line shape of the integral node type box type unit of the steel truss arch bridge and the correction condition.
Step six, installing a box type unit of the steel truss arch bridge: in order to ensure that the manufacturing precision is inspected, the influence of accumulated errors in the manufacturing of the steel truss girder is predicted and controlled, the arch ribs are in a bridge linear shape and are smoothly installed on site, the full-bridge arch ribs are subjected to sectional trial assembly, and the full-bridge arch ribs are transported to a construction site for site installation after the trial assembly is completed.
Claims (10)
1. A manufacturing method of an integral node type box-type rod piece of a steel truss arch bridge is characterized by comprising the following steps of: the method comprises the following specific steps:
(1) cutting the steel plate to obtain a steel plate to be corrected;
(2) after the straightening steel plate is cut, adopting a shaped steel plate straightening platform to carry out straightening treatment;
(3) the corrected steel plates adopt a steel truss arch bridge box type unit welding platform to carry out integral node type box type unit welding construction on the steel truss arch bridge;
(4) after the welding of the integral node type box-type unit of the steel truss arch bridge is finished, the box-type unit of the steel truss arch bridge is corrected through a box-type unit correction platform;
(5) and finally, mounting the integral node type box type unit of the steel truss arch bridge.
2. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 1, wherein the method comprises the following steps: cutting the steel plate in the step (1), wherein the cutting method specifically comprises the following steps: and (3) blanking and precisely blanking by using a numerical control cutting machine, performing overall linear lofting on the steel truss arch bridge by using a computer, performing three-dimensional lofting on each node, and drilling bolt holes by using a three-dimensional numerical control drilling machine.
3. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 1, wherein the method comprises the following steps: the sizing steel plate correcting platform comprises a first concrete foundation, wherein a first steel bottom plate is placed on the top surface of the first concrete foundation, first L-shaped steel pillars are welded on the first steel bottom plate at intervals, and first L-shaped steel cross beams are welded on the upper parts of the first L-shaped steel pillars; and each L-shaped steel beam I is connected with a steel plate fixing support.
4. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 3, wherein the method comprises the following steps: the steel plate fixing support comprises a first threaded rod, a movable fixing steel plate, a first U-shaped notch base and a first adjustable bolt, wherein the movable fixing steel plate moves up and down on the first threaded rod; the steel plate fixing support is used for adjusting and moving on the edge of a flange of the L-shaped steel beam according to the position of a steel plate to be corrected, the steel plate fixing support is fixed through a first adjustable bolt, a movable fixed steel plate is placed on the upper portion of the steel plate to be corrected, the movable fixed steel plate and a first threaded rod are fixed through a first fixed bolt, a second adjustable bolt is arranged on the movable fixed steel plate, the steel plate to be corrected is further fixed through the second adjustable bolt after the movable fixed steel plate is fixed, and the steel plate to be corrected is corrected by adopting a flame correction method.
5. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 3, wherein the method comprises the following steps: and an inclined support I is fixedly connected between the upper end of the L-shaped steel strut and the steel base plate I.
6. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 1, wherein the method comprises the following steps: the steel truss arch bridge box type unit welding platform comprises a second concrete foundation, a second steel base plate is placed on the top surface of the second concrete foundation, second L-shaped steel pillars are welded on the second steel base plate at intervals, second L-shaped steel beams are welded on the upper portions of the second L-shaped steel pillars, and each second L-shaped steel beam is connected with a box type rod piece fixing support.
7. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 6, wherein the method comprises the following steps: the box-type rod piece fixing support comprises a second threaded rod, a second L-shaped movable fixing steel plate, a second U-shaped notch base and a third adjustable bolt, wherein the second L-shaped movable fixing steel plate moves up and down on the second threaded rod, the second U-shaped notch base is fixed at the lower end of the second threaded rod, the second U-shaped notch base is installed on the flange of the second L-shaped cross beam, a second threaded hole is formed in the side plate at the upper end of the second U-shaped notch base, the side plate at the lower end of the second U-shaped notch base is located below the flange of the second L-shaped cross beam, the third adjustable bolt is arranged in the threaded hole of the side plate at the upper end, and the flange of the second L-shaped cross beam and the side plate; the box-type member fixing support is adjusted and moved on two flanges of the L-shaped steel beam according to the position of a box-type unit side plate of the steel truss arch bridge, the two side edges are fixed through an adjustable bolt III, a box-type unit bottom plate of the steel truss arch bridge is fixed through U-shaped notch bases II on two sides, then the box-type unit side plate of the steel truss arch bridge is hoisted, the upper part of the box-type unit side plate of the steel truss arch bridge is fixed through the box-type member fixing support, and the lower part of the box-type unit side plate of the steel truss; the L-shaped movable fixed steel plate is placed on the upper portion of the box type unit side plate of the steel truss arch bridge, and the L-shaped movable fixed steel plate and the threaded rod II are fixed through a second fixing bolt; the adjustable bolts IV are arranged on the L-shaped movable fixed steel plate, and after the L-shaped movable fixed steel plate is used for preliminarily fixing the box type unit side plates of the steel truss arch bridge, the box type unit side plates of the steel truss arch bridge are further fixed through the adjustable bolts IV on the L-shaped movable fixed steel plate; welding construction is carried out after steel purlin arch bridge box type unit bottom plate, steel purlin arch bridge box type unit curb plate are fixed to be accomplished, and after steel purlin arch bridge box type unit bottom plate, steel purlin arch bridge box type unit curb plate welding were accomplished, not hard up adjustable bolt four and fixing bolt two, heighten and 180 degrees rotation fixing the movable fixed steel sheet position of L type, hoist and mount steel purlin arch bridge box type unit roof and welding at last.
8. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 6, wherein the method comprises the following steps: and a second inclined support is fixedly connected between the upper end of the second L-shaped steel support and the second steel base plate.
9. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 1, wherein the method comprises the following steps: the box type unit correcting platform of the steel truss arch bridge comprises a concrete foundation III, a steel bottom plate III is placed on the top surface of the concrete foundation III, H-shaped steel pillars are welded on the steel bottom plate III at intervals, and steel base plates are welded at the top ends of the H-shaped steel pillars; a plurality of steel pipe piles are arranged on two sides of the H-shaped steel support at intervals, the lower ends of the steel pipe piles penetrate through a concrete foundation III, 4U-shaped placing steel plates are welded on the upper portion and the lower portion of each steel pipe pile at intervals, and jacks are placed on the inner sides of the U-shaped placing steel plates; placing the integral node type box type unit of the steel truss arch bridge on the H-shaped steel strut through a crane, and correcting the integral node type box type unit of the steel truss arch bridge through a jack; the position and the number of the jacks are dynamically adjusted according to the height or the line shape and the correction condition of the integral node type box type unit of the steel truss arch bridge.
10. The method for manufacturing the integral node box type rod piece of the steel truss arch bridge according to claim 9, wherein the method comprises the following steps: the H-shaped steel support is reinforced through connecting and supporting; and the steel pipe piles are fixed through tie bars.
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