CN107386461B - Steel truss multidirectional cross connecting box type node welding die carrier and node assembling method - Google Patents
Steel truss multidirectional cross connecting box type node welding die carrier and node assembling method Download PDFInfo
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- CN107386461B CN107386461B CN201710742917.2A CN201710742917A CN107386461B CN 107386461 B CN107386461 B CN 107386461B CN 201710742917 A CN201710742917 A CN 201710742917A CN 107386461 B CN107386461 B CN 107386461B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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Abstract
The invention discloses a steel truss multidirectional cross connecting box type node welding die carrier and a node assembling method, wherein the steel truss multidirectional cross connecting box type node welding die carrier comprises a lower base and an upper constraint body, the lower base comprises a vertically arranged supporting pipe, and a plurality of open slots penetrating through the pipe wall and having upward openings are formed in the pipe wall of the upper end part of the supporting pipe along the thickness direction of the pipe wall; the upper portion restraint body includes the restraint pipe, be fixed with the cardboard of a plurality of perpendicular to outer wall along circumference on the outer wall of restraint pipe lower part end portion and be provided with the restraint board of a plurality of perpendicular to outer wall along circumference on the outer wall of upper portion end portion, upper portion restraint body lower part end portion detachably is connected with stay tube upper portion end portion, a plurality of cardboard and a plurality of open slot one-to-one and looks adaptation. When the die carrier is used for assembling the multidirectional distributing box type node, the upper and lower bending whole plates of the node are supported and positioned through the upper constraint body, so that the manufacturing precision is high, the working procedures are simplified, the construction efficiency is improved, and constructors can easily master the die carrier.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a steel truss multidirectional distributing box type node welding formwork and a node assembling method.
Background
Along with the vigorous development of steel structure buildings in China, the steel truss is more and more widely applied, has the advantages of large light transmission area, small occupied space and the like, and can meet the requirements of high-grade hotels and shopping centers on space, span and lighting. The steel truss is composed of rod pieces, the rod pieces are mostly rectangular steel pipes, and the steel truss is often integrally provided with a certain radian, wherein the radian is realized through fold lines, namely, the mode of transition from the nodes to the fold lines is realized.
The node of the steel truss usually adopts a multidirectional distributing box type node, and the multidirectional distributing box type node is usually provided with a junction and a connecting part, because the connecting direction of the multidirectional distributing box type node is multidirectional, each connecting direction is provided with a connecting part, the connecting line between the included angle vertexes of each adjacent connecting part forms a central bending line, the part inside the central bending line is the junction of the multidirectional distributing box type node (the included angle vertexes of each adjacent connecting part are all vertexes of the junction), and a plurality of connecting parts are fixed with the junction and form a node whole. At present, the multidirectional distribution box type node is commonly two of a four-way distribution box type node and a six-way distribution box type node, wherein the multidirectional distribution box type node is divided into a main box and a secondary box and is of a space bending structure, and the structure of the multidirectional distribution box type node is from bottom to top, namely a lower bending whole plate, a web plate (a main box web plate and a secondary box web plate), a stiffening plate and a sealing plate, and an upper bending whole plate. The six-way junction box type node (having six connecting portions) shown in fig. 1 and the four-way junction box type node (having four connecting portions) shown in fig. 2 each include a lower bending whole plate 31, an upper bending whole plate 32, a main box web 33, a sub box web 34, a main box sealing plate 35, a sub box sealing plate 36 and a reinforcing plate 37; the main box web 33, the secondary box web 34 and the reinforcing plates 37 are equal in height, the main box web 33, the secondary box web 34 and the reinforcing plates 37 are all arranged between the lower bending whole plate 31 and the upper bending whole plate 32 and play a supporting role, the main box web 33 is two parallel and through long whole plates, the secondary box web 34 is fixed on two sides of the main box web 33, the reinforcing plates 37 are fixed between the two main box webs 33, and the main box sealing plates 35 and the secondary box sealing plates 36 seal the ends of all connecting parts of the multidirectional junction box type nodes. At present, the upper and lower bending whole plates of the multidirectional distributing box type node realize whole plate blanking, and the arc degree of the professional bending machine is processed, so that the smooth transition of the truss structure is ensured. However, because the rod piece connected with the node belongs to a space bending structure, the cross section is small, and high requirements are put forward on the angle, the length and the plane bending radian of the node joint in the manufacturing precision, the conventional construction cross connecting box type welding node has a plurality of difficulties, such as low manufacturing precision, complex working procedure and low construction efficiency, and is not easy to master by constructors.
Disclosure of Invention
The invention aims to provide a steel truss multidirectional cross-connecting box type node welding die carrier and a node assembling method, wherein when the die carrier is used for assembling the steel truss multidirectional cross-connecting box type node, upper and lower bending whole plates of the multidirectional cross-connecting box type node are supported and positioned through an upper constraint body, the manufacturing precision is high, the working procedures are simplified, the construction efficiency is improved, and constructors can easily master the steel truss multidirectional cross-connecting box type node.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, a multidirectional distributing box type node welding die carrier of steel truss, its characterized in that: the device comprises a lower base and an upper constraint body, wherein the lower base comprises a vertically arranged supporting tube, and a plurality of open slots with upward openings and penetrating through the tube wall are formed in the tube wall of the upper end head part of the supporting tube along the thickness direction of the tube wall; the upper constraint body comprises a constraint tube, and a plurality of clamping plates perpendicular to the outer wall are fixed on the outer wall of the lower end head part of the constraint tube along the circumferential direction; the lower end head part of the upper restraining body is detachably connected with the upper end head part of the supporting tube, the outer diameter of the restraining tube is matched with the inner diameter of the supporting tube, and the clamping plates are in one-to-one correspondence and are matched with the open slots; the outer wall of the upper end head part of the constraint pipe is circumferentially provided with a plurality of constraint plates perpendicular to the outer wall, each constraint plate is formed by a horizontal first part and a vertical second part and is L-shaped, the first part is fixed with the outer wall of the upper end head part of the constraint pipe, the upper end of the first part exceeds the upper end of the constraint pipe, the second part is fixed on the upper side of the first part, the width of the second part is smaller than that of the first part, so that the upper side of the first part forms steps on the side close to the constraint pipe, and the number of the constraint plates is the same as the number of connecting parts on a multi-directional connecting box type node of a steel truss to be welded; the distance between the second parts of all the two adjacent constraint plates is matched with the width of the connecting part on the multi-directional connecting box type node of the steel truss to be welded one by one, so that all the connecting parts can be clamped in the gaps between the second parts of the two corresponding constraint plates.
The die carrier supports the lower bending whole plate through the first part of the constraint plate of the upper constraint body, positions the web plate and the upper bending whole plate through the second part of the constraint plate of the upper constraint body, and can achieve the precision and accuracy of the design requirement without other auxiliary positioning measures in the operation process, thereby ensuring the manufacturing quality of the multi-directional junction box type node; the steel truss multidirectional cross connecting box type node is easy to operate, more accurate in positioning, higher in manufacturing quality, easy to master for constructors and capable of improving construction efficiency when being assembled by the formwork; the lower base of the die carrier is connected with the upper constraint body through the clamping plate, one lower base can be abutted against the upper constraint body of multiple types, and the multidirectional distributing box type nodes of different types can be assembled.
Further, the lower base of the invention further comprises a first H-shaped steel, a second H-shaped steel and a third H-shaped steel, wherein the web plates of the first H-shaped steel, the second H-shaped steel and the third H-shaped steel are horizontally arranged, the second H-shaped steel and the third H-shaped steel are symmetrically fixed on two sides of the middle part of the first H-shaped steel and form a cross shape with the first H-shaped steel, and the lower end of the supporting tube is fixed with the web plate center of the first H-shaped steel.
Furthermore, inclined struts with reinforcing structures are respectively arranged between the side wall of the support tube and the cross four directions formed by the first H-shaped steel, the second H-shaped steel and the third H-shaped steel, the upper ends of the inclined struts are fixed with the side wall of the support tube, and the lower ends of the inclined struts are fixed with webs of the H-shaped steel at the corresponding side.
Furthermore, the diagonal brace adopts angle steel.
Further, the constraint plates are six and are uniformly distributed along the circumferential direction of the upper part of the constraint pipe.
Further, the constraint plates are four.
Furthermore, the clamping plates are four and are uniformly distributed along the circumference of the lower part of the constraint tube.
In a second aspect, a method for assembling a steel truss multidirectional cross connecting box type node, which adopts the steel truss multidirectional cross connecting box type node welding mould frame for assembly, comprises the following steps:
step 5, assembling the stiffening plate, and referring to the secondary box web plate when assembling the stiffening plate, so as to ensure that the stiffening plate and the corresponding secondary box web plate are positioned in the same plane;
step 6, assembling a main box sealing plate and a secondary box sealing plate;
and 7, placing and assembling a bending whole plate on the main box web plate, the secondary box web plate, the stiffening plate, the main box sealing plate and the secondary box sealing plate, wherein the parts of the upper bending whole plate corresponding to the connecting parts are respectively clamped between the second parts of the two corresponding adjacent constraint plates.
Further, when the upper constraint body in the steel truss multidirectional transfer box type node welding mould frame is designed, a BIM technology is adopted to carry out 1:1 lofting to accurately establish a three-dimensional model of the multidirectional transfer box type node, local coordinates and three-dimensional positioning dimensions of the multidirectional transfer box type node are generated, and then the upper constraint body is designed according to the local coordinates and the three-dimensional positioning dimensions of the multidirectional transfer box type node, and the method comprises the following steps:
step a, according to the positioning point of the lower bending whole plate center bending line: A. b, C, D, E, F … … the length L of the diagonal of the central bending line is known, and the radius R of the constraint tube is determined according to the length L of the diagonal, wherein R is smaller than L/2;
step b, under the condition that the center of a constraint tube is simulated to coincide with the center of a whole steel truss multidirectional cross box type node lower bending plate to be assembled, determining the installation position a, b, c, d, e, f … … of each constraint plate through the intersection point of the diagonal line of a central bending line and the constraint tube, wherein one constraint plate is arranged at the installation position of each constraint plate, and meanwhile, the second part distance between two adjacent constraint plates is matched with the corresponding steel truss multidirectional cross box type node connecting part;
and c, determining the height of the second part of the constraint plate according to the thickness of the upper bending whole plate, the height of the main box web plate/the secondary box web plate and the thickness of the lower bending whole plate, wherein the height of the second part of the constraint plate is larger than the sum of the thickness of the upper bending whole plate, the height of the main box web plate/the secondary box web plate and the thickness of the lower bending whole plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the die carrier supports the lower bending whole plate through the first part of the constraint plate of the upper constraint body, positions the web plate and the upper bending whole plate through the second part of the constraint plate of the upper constraint body, and can achieve the precision and accuracy of the design requirement without other auxiliary positioning measures in the operation process, thereby ensuring the manufacturing quality of the connecting box type node; the steel truss multidirectional cross connecting box type node is easy to operate, more accurate in positioning, higher in manufacturing quality, easy to master for constructors and capable of improving construction efficiency when being assembled by the formwork;
2. the lower base of the die carrier is connected with the upper constraint body through the cross clamping plates, one lower base can be in butt joint with multiple types of upper constraint bodies, and different types of multidirectional distributing box type nodes can be assembled;
3. the die carrier has the advantages of simple manufacturing materials, no need of independent purchase, low manufacturing cost by adopting engineering waste materials, realization of recycling of resources and realization of energy conservation and environmental protection.
Drawings
FIG. 1 is a schematic view of a six-way junction box type node structure of a steel truss;
FIG. 2 is a schematic view of a four-way junction box type node structure of a steel truss;
fig. 3 is a schematic structural diagram of a six-way cross connecting box type welding formwork of a steel truss according to the first embodiment of the invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a top view of the upper restraint body of a steel truss four-way cross connecting box type welding formwork in a second embodiment of the invention;
fig. 6 is a schematic diagram of the upper structure of a six-way cross-connecting box type welding formwork for a steel truss according to the first embodiment of the present invention when the six-way cross-connecting box type welding formwork is assembled;
FIG. 7 is a top view of FIG. 6;
fig. 8 is a schematic diagram of the upper structure of a steel truss four-way cross connecting box type welding formwork in the second embodiment of the present invention when a four-way cross connecting box type node is assembled;
fig. 9 is a top view of fig. 8.
In the accompanying drawings: 1-a lower base; 2-an upper restraint; 3-multidirectional distributing box type nodes; 4-a central bending line;
11-supporting a tube; 12-first H-shaped steel; 13-a second H-section steel; 14-third H-shaped steel; 15-diagonal bracing; 21-a restraining tube; 22-clamping plates; 23-restraining plates; 31-bending the whole plate downwards; 32-bending the whole plate upwards; 33-a main box web; 34-secondary box webs; 35-a main box sealing plate; 36-secondary box sealing plates; 37-stiffened plate.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
As shown in fig. 3 and 4, the multi-directional steel truss cross-connecting box type node welding die carrier of the embodiment comprises a lower base 1 and an upper constraint body 2, wherein the lower base 1 comprises a support pipe 11 which is vertically arranged, and a plurality of open slots with upward openings and penetrating through the pipe wall are formed in the pipe wall of the upper end part of the support pipe 11 along the thickness direction of the pipe wall; the upper restraint body 2 comprises a restraint tube 21, and a plurality of clamping plates 22 perpendicular to the outer wall are fixed on the outer wall of the lower end part of the restraint tube 21 along the circumferential direction; the lower end head of the upper restraint body 2 is detachably connected with the upper end head of the support tube 11, the outer diameter of the restraint tube 21 is matched with the inner diameter of the support tube 11, and the clamping plates 22 are in one-to-one correspondence and are matched with the open slots; a plurality of constraint plates 23 perpendicular to the outer wall are arranged on the outer wall of the upper end part of the constraint tube 21 along the circumferential direction, the constraint plates 23 are formed by a horizontal first part and a vertical second part and are L-shaped, the first part is fixed with the outer wall of the upper end part of the constraint tube, the upper end of the first part exceeds the upper end of the constraint tube 21, the second part is fixed on the upper side of the first part, the width of the second part is smaller than that of the first part, so that the upper side of the first part forms steps on the side close to the constraint tube 21, and the number of the constraint plates 23 is the same as the number of connecting parts on a multi-directional junction box type node of a steel truss to be welded; the distance between the second parts of all adjacent two constraint plates 23 is matched with the width of the connecting parts on the multi-directional connecting box type node of the steel truss to be welded one by one, so that all the connecting parts can be clamped in the gaps between the second parts of the corresponding two constraint plates 23. Specifically, in this embodiment, the first portion and the second portion are both rectangular, and may be designed into other shapes according to actual needs, so long as installation and use are not affected.
As shown in fig. 3 and 4, the die carrier supports the lower bending whole plate 31 through the first part of the constraint plate 23 of the upper constraint body 2, positions the web plate and the upper bending whole plate 32 through the second part of the constraint plate 23 of the upper constraint body 2, and can achieve the precision and accuracy of the design requirement without other auxiliary positioning measures in the operation process, thereby ensuring the manufacturing quality of the junction box type node. The steel truss multidirectional cross connecting box type node is easy to operate, more accurate in positioning, higher in manufacturing quality, easy to master for constructors and capable of improving construction efficiency when being assembled by the formwork; the lower base 1 of the die carrier is connected with the upper constraint body 2 through the cross clamping plates 22, one lower base 1 can be abutted against multiple types of upper constraint bodies 2, and different types of multidirectional distributing box type nodes 3 can be assembled. The die carrier has the advantages of simple manufacturing materials, no need of independent purchase, low manufacturing cost by adopting engineering waste materials, realization of recycling of resources and realization of energy conservation and environmental protection.
The number of the constraint plates 23 of the upper constraint body 2 is equal to and matched with the number of the steel truss multidirectional transfer box type nodes, as shown in fig. 6 and 7, in the first embodiment, when the steel truss multidirectional transfer box type nodes are welded, the number of the constraint plates 23 of the upper constraint body 2 is six and uniformly distributed along the upper circumference of the constraint tube 21; as shown in fig. 8 and 9, in the second embodiment, four restraint plates 23 of the upper restraint body 2 are provided when the four-way junction box type node of the steel truss is welded.
As shown in fig. 3 and 4, the lower base 1 further includes a first H-shaped steel 12, a second H-shaped steel 13 and a third H-shaped steel 14 with a web plate horizontally arranged, the second H-shaped steel 13 and the third H-shaped steel 14 are symmetrically fixed on two sides of the middle of the first H-shaped steel 12 and form a cross with the first H-shaped steel 12, and the lower end of the support tube 11 is fixed with the web plate center of the first H-shaped steel 12. Inclined struts 15 with reinforcing structures are respectively arranged between the side walls of the support pipes 11 and the cross four directions formed by the first H-shaped steel 12, the second H-shaped steel 13 and the third H-shaped steel 14, the upper ends of the inclined struts 15 are fixed with the side walls of the support pipes 11, and the lower ends of the inclined struts 15 are fixed with webs of the H-shaped steel on the corresponding sides. Specifically, in this embodiment, the diagonal brace 15 adopts angle steel, and in practical application, the diagonal brace 15 may also adopt other section steel, so long as the structure is stable, and the use of other components is not affected.
As shown in fig. 1 and 2 and fig. 6 to 9, the invention provides a method for assembling a multidirectional cross connecting box type node of a steel truss, which comprises the following steps:
step 5, assembling the stiffening plate 37, and referring to the secondary box web 34 when assembling the stiffening plate 37, so as to ensure that the stiffening plate 37 and the corresponding secondary box web 34 are positioned in the same plane;
step 6, assembling a main box sealing plate 35 and a secondary box sealing plate 36;
and 7, placing and assembling the upper bending whole plate 32 on the main box web 33, the secondary box web 34, the stiffening plate 37, the main box sealing plate 35 and the secondary box sealing plate 36, wherein the parts of the upper bending whole plate 32 corresponding to the connecting parts are respectively clamped between the second parts of the two corresponding adjacent constraint plates.
As shown in fig. 1 and 2 and fig. 6 to 9, when designing an upper constraint body 2 in a multi-directional joint box node welding mould frame of a steel truss, firstly, 1:1 lofting is performed by adopting a BIM technology to accurately establish a three-dimensional model of the multi-directional box node, local coordinates and three-dimensional positioning dimensions of the multi-directional joint box node are generated, and then the upper constraint body 2 is designed according to the local coordinates and the three-dimensional positioning dimensions of the multi-directional joint box node, and the method comprises the following steps:
step a, according to the positioning point of the lower bending whole plate center bending line 4: A. b, C, D, E, F … … the length L of the diagonal of the central bending line 4, and the radius R of the constraint tube 21 is determined according to the length L of the diagonal, wherein R is smaller than L/2;
step b, under the condition that the center of a constraint tube is simulated and overlapped with the center of a whole lower bending plate of a multi-directional steel truss connecting box type node to be assembled, determining the installation position a, b, c, d, e, f … … of the constraint plates 23 through the intersection point of the diagonal line of a central bending line 4 and the constraint tube 21 and the intersection point of the diagonal line of the central bending line 4 and the constraint tube 21, arranging one constraint plate 23 at the installation position of each constraint plate 23, ensuring that the constraint plates 23 are perpendicular to the constraint tube 21, and simultaneously, matching the second part spacing of two adjacent constraint plates with the corresponding multi-directional steel truss connecting box type node connecting part;
and c, determining the height of a second part of the constraint plate according to the thickness of the upper bending whole plate 32, the height of the main box web 33/secondary box web 34 and the thickness of the lower bending whole plate 31, wherein the height of the second part of the constraint plate is larger than the sum of the thickness of the upper bending whole plate 32, the height of the main box web 33/secondary box web 34 and the thickness of the lower bending whole plate 31.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the applicant has described the present invention in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (8)
1. A steel truss multidirectional distribution box type node assembly method is characterized in that: the steel truss multidirectional transfer box type node welding die frame is assembled, and comprises a lower base and an upper constraint body, wherein the lower base comprises a support pipe which is vertically arranged, and a plurality of open slots with openings upwards and penetrating through the pipe wall are formed in the pipe wall of the upper end part of the support pipe along the thickness direction of the pipe wall; the upper constraint body comprises a constraint tube, and a plurality of clamping plates perpendicular to the outer wall are fixed on the outer wall of the lower end head part of the constraint tube along the circumferential direction; the lower end head part of the upper restraining body is detachably connected with the upper end head part of the supporting tube, the outer diameter of the restraining tube is matched with the inner diameter of the supporting tube, and the clamping plates are in one-to-one correspondence and are matched with the open slots; the outer wall of the upper end head part of the constraint pipe is circumferentially provided with a plurality of constraint plates perpendicular to the outer wall, each constraint plate is formed by a horizontal first part and a vertical second part and is L-shaped, the first part is fixed with the outer wall of the upper end head part of the constraint pipe, the upper end of the first part exceeds the upper end of the constraint pipe, the second part is fixed on the upper side of the first part, the width of the second part is smaller than that of the first part, so that the upper side of the first part forms steps on the side close to the constraint pipe, and the number of the constraint plates is the same as the number of connecting parts on a multi-directional connecting box type node of a steel truss to be welded; the distance between the second parts of all the two adjacent constraint plates is matched with the width of the connecting part on the multidirectional connecting box type node of the steel truss to be welded one by one, so that all the connecting parts can be clamped in the gaps between the second parts of the two corresponding constraint plates; the method comprises the following steps:
step 1, blanking according to design requirements to form each part of a steel truss multidirectional distributing box type node;
step 2, placing the lower bending whole plate on the upper constraint body of the welding mould frame, wherein the middle part of the lower bending whole plate is placed above the first parts of the constraint plates, and the parts of the lower bending whole plate corresponding to the connecting parts are respectively clamped between the second parts of the two adjacent constraint plates; the first part of the constraint plate plays a role in vertically supporting the lower bending whole plate, and the second part of the constraint plate plays a role in laterally constraining and positioning the lower bending whole plate;
step 3, assembling a main box web on the lower bending whole plate, wherein the main box web is vertical to the lower bending whole plate, the bottom of the main box web is aligned with the edge of the lower bending whole plate, and the side surface of the main box web is abutted against the first parts of the two corresponding constraint plates;
step 4, assembling a secondary box web, wherein the secondary box web is perpendicular to the lower bending whole plate, the bottom of the secondary box web is aligned with the edge of the lower bending whole plate, one end of the secondary box web is abutted with the main box web, and one side surface near the abutting end abuts against the corresponding first part of the constraint plate;
step 5, assembling the stiffening plate, and referring to the secondary box web plate when assembling the stiffening plate, so as to ensure that the stiffening plate and the corresponding secondary box web plate are positioned in the same plane;
step 6, assembling a main box sealing plate and a secondary box sealing plate;
and 7, placing and assembling a bending whole plate on the main box web plate, the secondary box web plate, the stiffening plate, the main box sealing plate and the secondary box sealing plate, wherein the parts of the upper bending whole plate corresponding to the connecting parts are respectively clamped between the second parts of the two corresponding adjacent constraint plates.
2. The steel truss multidirectional distribution box node assembly method according to claim 1, wherein: when an upper constraint body in a steel truss multidirectional transfer box type node welding mould frame is designed, a BIM technology is adopted to carry out 1:1 lofting to accurately establish a three-dimensional model of the multidirectional transfer box type node, local coordinates and three-dimensional positioning dimensions of the multidirectional transfer box type node are generated, and then the upper constraint body is designed according to the local coordinates and the three-dimensional positioning dimensions of the multidirectional transfer box type node, and the method comprises the following steps:
step a, calculating the length L of a diagonal line of a central bending line according to a locating point of the central bending line of the lower bending whole plate, and determining the radius R of the constraint tube according to the length L of the diagonal line, wherein R is less than L/2;
step b, under the condition that the center of a constraint tube is overlapped with the center of a whole steel truss multidirectional cross box type node to be assembled in a simulated mode, determining the installation position of each constraint plate through the intersection point of the diagonal line of a central bending line and the constraint tube, wherein one constraint plate is arranged at the installation position of each constraint plate, and meanwhile, the second part distance between two adjacent constraint plates is matched with the corresponding steel truss multidirectional cross box type node connecting part;
and c, determining the height of the second part of the constraint plate according to the thickness of the upper bending whole plate, the height of the main box web plate/the secondary box web plate and the thickness of the lower bending whole plate, wherein the height of the second part of the constraint plate is larger than the sum of the thickness of the upper bending whole plate, the height of the main box web plate/the secondary box web plate and the thickness of the lower bending whole plate.
3. The steel truss multidirectional distribution box node assembly method according to claim 1, wherein: the lower base further comprises first H-shaped steel, second H-shaped steel and third H-shaped steel, wherein the web plates of the first H-shaped steel, the second H-shaped steel and the third H-shaped steel are horizontally arranged, the second H-shaped steel and the third H-shaped steel are symmetrically fixed on two sides of the middle of the first H-shaped steel and form a cross shape with the first H-shaped steel, and the lower end of the supporting tube is fixed with the web plate center of the first H-shaped steel.
4. A method of assembling a steel truss multidirectional cross-connecting box node according to claim 3, wherein: and inclined struts with reinforcing structures are respectively arranged between the side walls of the support pipes and four directions of the cross shape formed by the first H-shaped steel, the second H-shaped steel and the third H-shaped steel, and the upper ends of the inclined struts are fixed with the side walls of the support pipes, and the lower ends of the inclined struts are fixed with webs of the H-shaped steel at the corresponding sides.
5. The method for assembling the steel truss multidirectional distribution box type node according to claim 4, wherein the method comprises the following steps: the diagonal bracing adopts angle steel.
6. The steel truss multidirectional distribution box node assembly method according to claim 1, wherein: the constraint plates are six and are uniformly distributed along the circumferential direction of the upper part of the constraint tube.
7. The steel truss multidirectional distribution box node assembly method according to claim 1, wherein: the constraint plates are four.
8. The steel truss multidirectional distribution box node assembly method according to claim 1, wherein: the clamping plates are four and are uniformly distributed along the circumference of the lower part of the constraint tube.
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| CN202655850U (en) * | 2012-06-14 | 2013-01-09 | 中建钢构江苏有限公司 | Round pipe penetrating positioning frame |
| CN103321350B (en) * | 2013-06-03 | 2016-01-20 | 江苏沪宁钢机股份有限公司 | A kind of multi-link heavy in section combined box type slab side column and construction method thereof |
| CN203866960U (en) * | 2014-05-23 | 2014-10-08 | 浙江东南网架股份有限公司 | X-shaped cross point with box type section |
| CN105089150B (en) * | 2015-06-24 | 2017-05-10 | 成都东南钢结构有限公司 | Single-layer latticed shell structure with drum type nodes, and assembly method |
| CN207130891U (en) * | 2017-08-25 | 2018-03-23 | 中冶建工集团有限公司 | A kind of multidirectional handing-over box node weld mould bases of steel truss |
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