CN109537726B - Rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint and construction method - Google Patents
Rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint and construction method Download PDFInfo
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- CN109537726B CN109537726B CN201811638078.0A CN201811638078A CN109537726B CN 109537726 B CN109537726 B CN 109537726B CN 201811638078 A CN201811638078 A CN 201811638078A CN 109537726 B CN109537726 B CN 109537726B
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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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- 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
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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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 rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint and a construction method, wherein the rectangular steel pipe column, the H-shaped steel beam and a connection force transmission component are included; the connecting force transmission component comprises an upper rectangular hoop, a lower rectangular hoop, an upper inequality angle steel, a lower inequality angle steel and a vertical web connecting plate; the upper and lower inequality angle steel comprises inequality angle steel short limbs connected with the rectangular steel pipe column and inequality angle steel long limbs connected with the flange of the H-shaped steel beam; the upper rectangular hoop and the lower rectangular hoop are sleeved on the outer sides of the short limbs of the unequal angle steel and are connected with the rectangular steel pipe column through unidirectional locking high-strength bolts; the vertical web connecting plate is positioned at the web of the H-shaped steel beam, is fixed with the rectangular steel pipe column and is connected with the web of the H-shaped steel beam. The joint is reasonable and reliable in force transmission, standardized in design, standardized in manufacture, accurate and convenient to install, suitable for assembly connection of square steel pipe columns and H-shaped steel beam structures, and good in ductility and high in earthquake resistance and energy consumption.
Description
Technical Field
The invention relates to constructional engineering, in particular to a rectangular steel pipe column-H-shaped steel beam full-bolt connection semi-rigid node and a construction method thereof.
Background
Since 2016, intensive outlay on steel structure building industrialization and assembly building policies has been proposed to actively popularize green buildings and building materials and to vigorously develop steel structures and assembly buildings. The fabricated steel structure system refers to a building produced by manufacturing a house unit or a member according to a unified and standard building part specification, and then transporting the house unit or the member to a construction site for assembly in place. The method is characterized by light building quality, energy conservation, environmental protection, high construction speed, high industrialization degree and the like, can solve the problems of low industrialization level of the building in China, low labor productivity of building construction, low quality of the traditional building products and the like, and is suitable for the development of the building industry in China. The rectangular steel pipe column has no obvious weak axis and has larger torsional rigidity compared with hot rolled H-shaped steel, and the rectangular steel pipe column has the bearing capacity fully developed in a frame system, thereby being an important column section form in the design of a multi-layer steel frame. However, the rectangular steel pipe column is a closed section, so that space cannot be provided for high-strength bolt connection construction, and assembly connection is difficult to be carried out by using a conventional high-strength bolt like an H-shaped steel column. The beam-column connection technology is the most core technology in an assembled steel frame structure system, and the connection structure and the node performance play an important role in controlling the performance of the whole system. The connection of the bolt end plate between the steel pipe concrete column and the I-beam is researched by students at home and abroad, but the related research conclusion is difficult to popularize into the connection node of the box column and the I-beam because the concrete has obvious limiting effect on the deformation of the steel pipe wall.
The node is divided into rigid connection, hinging connection and semi-rigid connection according to different rigidity performances, and the semi-rigid connection steel frame has stronger deformability and energy consumption capability due to the node, so that the self-vibration period of the structure can be prolonged, the plastic hinge at the beam end can be controlled to dissipate earthquake energy, and the collapse of the structure caused by the damage of the connection node is prevented, so that earthquake damage is greatly reduced, and earthquake resistance is facilitated. The main types of the existing steel structure rectangular steel pipe column-H-shaped steel beam semi-rigid joint are as follows: the connection of the core-penetrating bolt end plates, the connection of the beam flanges and the column wall through the connecting piece and the repair welding connection form of the column wall opening, and the semi-rigid connection form is various but has a certain degree of defects: the connection of the penetrating bolt end plates requires special long opposite-pull high-strength bolts with through column sections, the requirements on machining and construction precision are very high, the construction efficiency is reduced, and when the unequal-height special-shaped nodes are adopted, the connection of the bolt penetrating end plates is not applicable any more; the beam flange of the connecting piece type node adopts high-strength bolts, so that the ductility and the anti-seismic performance of the node are improved, the field welding quantity is reduced, the field installation and the construction are facilitated, but the steel pipe is free from force transmission of an inner partition plate, and the steel pipe column is easy to generate local buckling of the column wall. The method has low construction efficiency, and the temporary construction hole damages the integrity of the original steel pipe, and the field repair welding introduces welding residual stress and reduces the bearing capacity of the original steel pipe.
The beam column node is a basic component of the frame structure, and has great influence on the stress and safety of the whole structure. Once the connection is broken, the structural member cannot function, and whether the structure is reasonable or not is directly related to the safety and reliability of the structure. The construction method of the beam column node directly influences the construction speed of the engineering and the assembly degree of the structure, so that the beam column node is connected by bolts which are convenient to operate as much as possible, and the arrangement of the bolts is likely to be easy for workers to fasten on site.
Therefore, the full bolt assembly type connecting node which is convenient to construct, can effectively improve the bearing capacity of the rectangular steel pipe column and the H-shaped steel and has low comprehensive cost is required to be provided in engineering, and the stress performance and the integrity of a frame structure formed by the H-shaped steel beam and the rectangular steel pipe column can be greatly improved.
Disclosure of Invention
The invention aims to overcome the defects of the existing H-shaped steel beam and rectangular steel pipe column joint technology, and provides a full-bolt assembled semi-rigid connection joint with convenient construction and high bearing performance and a construction method thereof, so that the full assembly of the structure is realized, the assembly speed of members is improved, and the requirements and characteristics of a multi-high-rise assembled steel structure system are fully met.
The technical scheme adopted by the invention is as follows: a rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint comprises a rectangular steel pipe column, an H-shaped steel beam and a connection force transmission component; the connecting force transmission component comprises an upper rectangular hoop, a lower rectangular hoop, an upper inequality angle steel, a lower inequality angle steel and a vertical web connecting plate;
the upper inequality angle steel comprises an upper inequality angle steel short limb and an upper inequality angle steel long limb, the inner wall of the upper inequality angle steel short limb is attached to the outer wall of the rectangular steel pipe column, and the lower surface of the upper inequality angle steel long limb is attached to the upper flange of the H-shaped steel beam and fixedly connected with the upper flange of the H-shaped steel beam;
the lower inequality angle steel comprises a lower inequality angle steel short limb and a lower inequality angle steel long limb, the inner wall of the lower inequality angle steel short limb is attached to the outer wall of the rectangular steel pipe column, and the lower surface of the lower inequality angle steel long limb is attached to the lower flange of the H-shaped steel beam and fixedly connected with the lower flange of the H-shaped steel beam;
the upper rectangular hoop is sleeved on the outer side of the upper unequal limb angle steel short limb, and the upper unequal limb angle steel short limb is pressed on the rectangular steel pipe column; the upper rectangular hoop sleeve is fixedly connected with the rectangular steel pipe column through a one-way locking high-strength bolt and fixedly connects the upper inequality angle steel short limb on the rectangular steel pipe column;
the lower rectangular hoop is sleeved on the outer side of the lower inequality angle steel short limb, and the lower inequality angle steel short limb is pressed on the rectangular steel pipe column; the lower rectangular hoop sleeve is fixedly connected with the rectangular steel pipe column through a one-way locking high-strength bolt and fixedly connects the lower inequality angle steel short limb on the rectangular steel pipe column;
the vertical web connecting plate is adhered to the web of the H-shaped steel beam and is fixedly connected with the web of the H-shaped steel beam, and the inner end part of the vertical web connecting plate is fixedly connected with the wall plate of the rectangular steel pipe column.
Further, the length of the upper inequality angle steel long limb is changed from equal to the length of the upper inequality angle steel short limb to equal to the width of the upper flange of the H-shaped steel beam through arc chamfering at the back position of the upper inequality angle steel long limb; the length of the upper unequal angle steel short limb is equal to the width of the rectangular steel pipe column; the length of the lower inequality angle steel long limb is changed from equal to the length of the lower inequality angle steel short limb to equal to the width of the lower flange of the H-shaped steel beam through arc chamfering at the back position of the lower inequality angle steel long limb; the length of the lower unequal angle steel short limb is equal to the width of the rectangular steel pipe column.
Further, the dimensions of the upper rectangular cuff and the lower rectangular cuff are determined according to the cross-sectional size of the rectangular steel pipe column.
Further, the thickness of the upper rectangular hoop is larger than or equal to the wall thickness of the rectangular steel pipe column, and the distance between the upper rectangular hoop and the rectangular steel pipe column is equal to the thickness of the upper unequal limb angle steel; the thickness of the lower rectangular hoop is larger than or equal to the thickness of the rectangular steel pipe column, and the distance between the lower rectangular hoop and the rectangular steel pipe column is equal to the thickness of the lower unequal angle steel.
Further, the upper flange and the lower flange of the H-shaped steel beam are fixedly connected with the upper inequality angle steel long limb and the lower inequality angle steel long limb through first high-strength bolts respectively.
Further, the vertical web connecting plate is fixedly connected with the web of the H-shaped steel beam through a first high-strength bolt; the inner end of the vertical web connecting plate is fixedly connected with the wall plate of the rectangular steel pipe column in a welding mode.
The invention adopts another technical scheme that: the construction method for the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint comprises the following steps:
step 1, respectively manufacturing an upper rectangular hoop, a lower rectangular hoop, an upper unequal limb angle steel and a lower unequal limb angle steel; the outer wall of the rectangular steel pipe column is fixedly connected with a vertical web plate connecting plate;
step 2, installing lower inequality angle steel and a lower rectangular hoop, wherein the lower rectangular hoop is sleeved on the outer side of a short limb of the lower inequality angle steel and is connected with a rectangular steel pipe column through a one-way locking high-strength bolt;
step 3, installing and positioning an H-shaped steel beam, and connecting the lower flange of the H-shaped steel beam with the lower unequal limb angle steel long limb through a first high-strength bolt;
step 4, installing unequal angle steel and an upper rectangular hoop, wherein the upper rectangular hoop is sleeved on the outer side of a short limb of the upper unequal angle steel and is connected with a rectangular steel pipe column through a one-way locking high-strength bolt;
step 5, connecting the upper flange of the H-shaped steel beam with the upper unequal angle steel long limb through a first high-strength bolt,
and 6, connecting the vertical web plate with the H-shaped steel beam web plate through a second high-strength bolt, and completing the assembly of the joints.
In step 1, the manufacturing method of the upper rectangular cuff and the lower rectangular cuff comprises the following steps: after the design of the regular section size, the rectangular steel plate is welded to form the rectangular closed hoop.
In step 1, the manufacturing method of the upper rectangular cuff and the lower rectangular cuff comprises the following steps: after the design of the regular section size, the steel pipe is cut off through a complete rectangular steel pipe to form a rectangular closed hoop.
The beneficial effects of the invention are as follows:
1. the design of the upper rectangular hoop, the lower rectangular hoop, the upper unequal limb angle steel and the lower unequal limb angle steel is not limited to one form, and can be designed according to the section sizes of rectangular steel columns and H-shaped steel beams and the force transmission condition of frame joints, so that the forms are various; the upper rectangular hoop, the lower rectangular hoop, the upper unequal angle steel and the lower unequal angle steel can be manufactured in batch by factories, and the production efficiency is high and the quality is reliable;
2. the upper rectangular hoops and the lower rectangular hoops are respectively sleeved at the short limbs of the upper unequal limb angle steel and the lower unequal limb angle steel, and are connected with the rectangular steel pipe column through the unidirectional locking high-strength bolt, the existence of the rectangular hoops improves the anchoring effect of the rectangular steel pipe column on the unidirectional locking high-strength bolt, so that the local buckling and the insufficient anchoring of the unidirectional locking high-strength bolt caused by the fact that the wall of the rectangular steel pipe column is too thin are effectively prevented, the rectangular steel pipe column works together with the unequal limb angle steel, and the overall stress performance of the rectangular steel pipe column and the node can be enhanced;
3. the invention is suitable for the development of an assembled steel structure, the welding part of the vertical web connecting plate is completed in a factory, the rectangular steel pipe column is connected with the upper rectangular hoops, the lower rectangular hoops and the upper unequal angle steel and the lower unequal angle steel, and the reasonable construction sequence is adopted, so that the assembly can be completed by adopting bolts on a construction site, the field construction is realized without welding, and the construction efficiency is improved;
4. the connecting node of the invention has the advantages that the upper rectangular hoop, the lower rectangular hoop and the upper unequal limb angle steel at the node position are mutually constrained to work together: the tension and pressure transmitted by the flange of the H-shaped steel beam are mainly transmitted to the rectangular steel pipe column and the rectangular hoop through the long limbs of the unequal angle steel; the shearing force transmitted by the H-shaped steel beam is mainly transmitted to the rectangular steel pipe column through the vertical web plate connecting plate, so that the anchoring effect of the rectangular steel pipe column on the unidirectional locking high-strength bolt is improved, certain rigidity is provided for unequal angle steel connection, meanwhile, the local stability of the rectangular steel pipe column wall plate in the joint area is ensured, all stress components are mutually supplemented and fully exerted, and the whole connecting joint has definite force transmission, reliable connection and good overall performance;
5. according to the connecting node, the H-shaped steel beam and the rectangular steel pipe column are connected through the rectangular hoops, the unequal angle steel, the vertical web connecting plates, the unidirectional locking high-strength bolts and the high-strength bolts, and the anti-seismic design principle of 'strong column and weak beam', 'strong node and weak rod piece' can be realized by utilizing good deformation capacity, energy consumption capacity and other anti-seismic performances of the semi-rigid node, so that the integral damage of the structure caused by brittle failure of the node is avoided, the anti-seismic performance of the structure is improved, economic loss is reduced, and casualties are reduced.
Drawings
Fig. 1: the three-dimensional space schematic diagram of the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node is provided;
fig. 2: the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node plan view of the invention;
fig. 3: the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node front elevation schematic diagram is provided;
fig. 4: the rectangular steel pipe column three-dimensional schematic diagram of the invention;
fig. 5: the H-shaped steel beam is in a three-dimensional schematic view;
fig. 6: the upper rectangular hoop is a three-dimensional schematic diagram;
fig. 7: the lower rectangular hoop is shown in a schematic perspective view;
fig. 8: the upper unequal limb angle steel of the invention is a three-dimensional schematic diagram;
fig. 9: the lower inequality angle steel of the invention is a three-dimensional schematic diagram;
the drawings are marked: 1-rectangular steel pipe column, 1a, 1b, 1c, 1 d-steel wallboard, 2-H-shaped steel beam, 3-upper rectangular cuff, 4-lower rectangular cuff, 5-upper inequality angle steel, 6-lower inequality angle steel, 7-vertical web connecting plate, 8-first high-strength bolt, 9-second high-strength bolt, 10-one-way locking high-strength bolt, 11-full penetration groove butt weld, 12-bolt hole, 13-full penetration groove butt weld, 21-upper flange, 22-lower flange, 23-web, 24-H-shaped steel beam flange bolt hole, 25-H-shaped steel beam web bolt hole, 31-upper rectangular cuff bolt hole, 41-lower rectangular cuff bolt hole, 51-upper inequality angle steel short limb, 52-upper inequality angle steel long limb, 53-upper inequality angle steel bolt hole, 61-lower inequality angle steel short limb, 62-lower inequality angle steel long limb, 63-lower inequality angle steel bolt hole, 71-bolt hole.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:
as shown in fig. 1 to 9, a rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint comprises a rectangular steel pipe column 1, an H-shaped steel beam 2 and a connection force transmission component.
The rectangular steel pipe column 1 is a welding box type combined section column, wherein the rectangular steel pipe column 1 is formed by connecting a steel wall plate 1a, a steel wall plate 1b, a steel wall plate 1c and a steel wall plate 1d according to a certain welding sequence.
The connecting force transmission component comprises an upper rectangular hoop 3, a lower rectangular hoop 4, an upper inequality angle steel 5, a lower inequality angle steel 6, a vertical web connecting plate 7, a first high-strength bolt 8, a second high-strength bolt 9 and a one-way locking high-strength bolt 10.
The upper inequality angle steel 5 comprises an upper inequality angle steel short limb 51 and an upper inequality angle steel long limb 52, the inner wall of the upper inequality angle steel short limb 51 is attached to the outer wall of the rectangular steel pipe column 1, and the lower surface of the upper inequality angle steel long limb 52 is attached to the upper flange 21 of the H-shaped steel beam 2 and fixedly connected with the upper flange 21 of the H-shaped steel beam 2 through a first high-strength bolt 8. Wherein, the length of the upper unequal limb angle long limb 52 is changed from the length equal to the length of the upper unequal limb angle short limb 51 to the width equal to the width of the upper flange 21 of the H-shaped steel beam 2 through arc chamfering at the limb back position; the length of the upper unequal angle steel short limb 51 is equal to the width of the rectangular steel pipe column 1.
The lower inequality angle steel 6 comprises a lower inequality angle steel short limb 61 and a lower inequality angle steel long limb 62, the inner wall of the lower inequality angle steel short limb 61 is attached to the outer wall of the rectangular steel pipe column 1, and the lower surface of the lower inequality angle steel long limb 62 is attached to the lower flange 22 of the H-shaped steel beam 2 and fixedly connected with the lower flange 22 of the H-shaped steel beam 2 through a first high-strength bolt 8. Wherein the length of the lower inequality angle steel long limb 62 is changed from the length equal to the length of the lower inequality angle steel short limb 61 to the width equal to the width of the lower flange 22 of the H-shaped steel beam 2 through circular arc chamfering at the limb back position; the length of the lower unequal angle steel short limb 61 is equal to the width of the rectangular steel pipe column 1.
The upper rectangular hoop 3 is sleeved on the outer side of the upper inequality angle steel short limb 51, the upper inequality angle steel short limb 51 is pressed on the rectangular steel pipe column 1, the upper rectangular hoop 3 is fixedly connected with the rectangular steel pipe column 1 through a one-way locking high-strength bolt 10, and the upper inequality angle steel short limb 51 is fixedly connected to the rectangular steel pipe column 1; the lower rectangular cuff 4 is sleeved on the outer side of the lower inequality angle steel short limb 61 and tightly presses the lower inequality angle steel short limb 61 on the rectangular steel pipe column 1, and the lower rectangular cuff 4 is fixedly connected with the rectangular steel pipe column 1 through a one-way locking high-strength bolt 10 and fixedly connected with the lower inequality angle steel short limb 61 on the rectangular steel pipe column 1. The arrangement of the upper rectangular hoop 3 sleeve and the lower rectangular hoop 4 sleeve effectively prevents the defects of local buckling and unidirectional locking of the high-strength bolt 10 anchoring caused by too thin column wall of the rectangular steel pipe column 1, improves the bearing capacity of the joint of the rectangular steel pipe column 1 and the H-shaped steel beam 2 unidirectional locking high-strength bolt 10, and can enhance the overall stress performance of the rectangular steel pipe column 1 and the joints.
The thickness of the upper rectangular hoop 3 is larger than or equal to the thickness of the column wall section of the rectangular steel pipe column 1, and the distance between the upper rectangular hoop 3 and the rectangular steel pipe column 1 is equal to the thickness of the upper unequal limb angle 5; the thickness of the lower rectangular hoop 4 is larger than or equal to the thickness of the column wall section of the rectangular steel pipe column 1, and the distance between the lower rectangular hoop 4 and the rectangular steel pipe column 1 is equal to the thickness of the lower inequality angle steel 6.
The dimensions of the upper rectangular hoop 3, the lower rectangular hoop 4, the upper unequal limb angle steel 5 and the lower unequal limb angle steel 6 are determined according to the section sizes of the rectangular steel pipe column 1 and the H-shaped steel beam 2 and the frame joint force transmission condition, and the rectangular hoops and the unequal limb angle steel can be manufactured in batch by factories.
The vertical web connecting plate 7 is attached to the web 23 of the H-shaped steel beam 2 and is fixedly connected with the web 23 of the H-shaped steel beam 2 through a second high-strength bolt 9, and the inner end part of the vertical web connecting plate 7 is fixedly connected with the wall plate of the rectangular steel pipe column 1 in a welding mode. The rectangular steel pipe column 1 and the vertical web connecting plate 7 are completed in a factory through the welding part of the full penetration groove butt welding seam 11, and the second high-strength bolt 9 is assembled and connected with the web 23 of the H-shaped steel beam 2 in a construction site.
As shown in fig. 3, the vertical web connection plate 7 is located at the web 23 position of the H-shaped steel beam 2, is welded with the outer wall of the rectangular steel pipe column 1 through a full penetration groove butt weld 11 in a factory, and is connected with the web 23 of the H-shaped steel beam 2 on site through a second high-strength bolt 9; the upper flange 21 and the lower flange 22 of the H-shaped steel beam 2 are respectively connected with the upper unequal limb angle steel long limb 52 and the lower unequal limb angle steel long limb 62 through a first high-strength bolt 8.
As shown in fig. 4 and 5, the rectangular steel pipe column 1 is formed by welding box-shaped combined sections, and the steel wall plates 1a, 1b, 1c and 1d of the rectangular steel pipe column 1 are reasonably welded with the vertical web connecting plates 7 in the following order:
(1) The steel wall plates 1a and 1b and the steel wall plates 1b and 1c of the rectangular steel pipe column 1 are welded by adopting full penetration groove butt welds 11 respectively, the specification and the position of a unidirectional locking high-strength bolt 10 are determined according to the joint design and the frame joint force transmission condition, and bolt holes 12 are formed in the wall plates of the rectangular steel pipe column 1 in advance;
(2) And at the web 23 position of the H-shaped steel beam 2, welding the vertical web connecting plate 7 with the steel wall plates 1a, 1b, 1c and 1d of the rectangular steel pipe column 1 by adopting a full penetration groove butt welding seam 13, and determining a pre-opened bolt hole 71 on the vertical web connecting plate 7 according to the joint design and the frame joint force transmission condition.
As shown in fig. 6 and 7, the first method for manufacturing the upper rectangular ferrule 3 and the lower rectangular ferrule 4 comprises: after the design of the regular section size, the rectangular steel plate is welded to form the rectangular closed hoop.
As shown in fig. 6 and 7, the second method for manufacturing the upper rectangular ferrule 3 and the lower rectangular ferrule 4 comprises: after the design of the regular section size, the steel pipe is cut off through a complete rectangular steel pipe to form a rectangular closed hoop.
As shown in fig. 8, the length of the upper unequal leg angle long limb 52 is changed from the same length as the upper unequal leg angle short limb 51 to the same width as the upper flange 21 of the H-shaped steel beam 2 by arc chamfering at the limb back position thereof.
As shown in fig. 9, the length of the lower unequal leg angle long limb 62 is changed from the same length as the lower unequal leg angle short limb 61 to the same width as the lower flange 22 of the H-shaped steel beam 2 by arc chamfering at the limb back position thereof.
The reasonable connection sequence of the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node is as follows:
1. according to reasonable design, the upper rectangular hoops 3 and the lower rectangular hoops 4 are manufactured by factory processing, the upper unequal limb angle steel 5 and the lower unequal limb angle steel 6 are manufactured, the sizes and the positions of the first high-strength bolt 8, the second high-strength bolt 9 and the unidirectional locking high-strength bolt 10 are determined according to the section sizes of the rectangular steel pipe column 1 and the H-shaped steel beam 2 and the frame node force transmission condition, and corresponding upper rectangular hoops bolt holes 31, lower rectangular hoops bolt holes 41, upper unequal limb angle steel bolt holes 53, lower unequal limb angle steel bolt holes 63, H-shaped steel beam flange bolt holes 24 and H-shaped steel beam web bolt holes 25 are reserved;
2. the lower rectangular hoop 4 is installed, the lower unequal limb angle steel 6 is installed, the lower rectangular hoop 4 is sleeved on the lower unequal limb angle steel short limb 61 for preliminary positioning, and is connected with the rectangular steel pipe column 1 through the unidirectional locking high-strength bolt 10, so that the problems that the rectangular steel pipe column 1 is locally buckled and the unidirectional locking high-strength bolt 10 is not sufficiently anchored due to the fact that the column wall is too thin are effectively prevented, the lower rectangular hoop 4 works together with the unequal limb angle steel, and the overall stress performance of the rectangular steel pipe column 1 and the node can be enhanced;
3. installing and positioning the H-shaped steel beam 2, and connecting the lower flange 22 of the H-shaped steel beam 2 with the lower unequal limb angle steel long limb 62 through a first high-strength bolt 8;
4. the non-equal angle steel 5 is installed, the rectangular hoops 3 are installed, the upper rectangular hoops 3 are sleeved on the short limbs 51 of the non-equal angle steel for preliminary positioning, and are connected with the rectangular steel pipe column 1 through the unidirectional locking high-strength bolt 10 to work together with the non-equal angle steel, so that the local buckling of the rectangular steel pipe column 1 and the insufficient anchoring of the unidirectional locking high-strength bolt 10 caused by too thin column wall are effectively prevented;
5. the upper flange 21 of the H-shaped steel beam 2 is connected with the upper unequal limb angle steel long limb 52 through the first high-strength bolt 8, so that an integral joint formed by the rectangular steel pipe column 1, the H-shaped steel beam 2 and the connecting force transmission component is formed, and the integral stress performance of the rectangular steel pipe column 1 and the joint can be enhanced;
6. the vertical web connecting plate 7 is assembled and connected with the web 23 of the H-shaped steel beam 2 through the second high-strength bolts 9, so that no welding is caused in site construction, and the construction efficiency is improved.
7. After the structure is installed, the first high-strength bolt 8, the second high-strength bolt 9 and the unidirectional locking high-strength bolt 10 which are connected with the force transmission component are finally screwed, and the joint installation is completed.
The upper rectangular hoop 3, the lower rectangular hoop 4 and the upper unequal limb angle steel 5 and the lower unequal limb angle steel 6 at the joint position are mutually constrained to work together: the upper rectangular hoops 3 are sleeved at the upper unequal limb angle steel short limbs 51 and are connected with the rectangular steel pipe column 1 through the unidirectional locking high-strength bolts 10, the lower rectangular hoops 4 are sleeved at the lower unequal limb angle steel short limbs 61 and are connected with the rectangular steel pipe column 1 through the unidirectional locking high-strength bolts 10, so that the anchoring effect of the rectangular steel pipe column 1 on the unidirectional locking high-strength bolts 10 is improved, certain rigidity is provided for the unequal limb angle steel connection, and meanwhile, the local stability of the wall plate of the rectangular steel pipe column 1 in the node area is also ensured;
the shear force on the H-shaped steel beam 2 is borne by the web plates 23, the vertical shear force transmitted by the web plates 23 of the H-shaped steel beam 2 is transmitted to the vertical web plate connecting plate 7 through the friction force generated by the connection of the second high-strength bolts 9, and then the shear force borne by the vertical web plate connecting plate 7 is mainly transmitted to the steel wall plate 1a of the rectangular steel pipe column 1 through the vertical full penetration groove butt weld joint 13; the horizontal load transmitted by the flanges (an upper flange 21 and a lower flange 22) of the H-shaped steel beam 2 is transmitted to the unequal limb angle steel (an upper unequal limb angle steel 5 and a lower unequal limb angle steel 6) through the friction force generated by connection of the first high-strength bolt 8 or the extrusion force of the bolt rod and the hole wall, then the unequal limb angle steel transmits the horizontal load to the rectangular hoops (the upper rectangular hoops 3 and the lower rectangular hoops 4) and the rectangular steel pipe column 1 through the unidirectional locking high-strength bolt 10, and the rectangular steel pipe column 1 and the rectangular hoops bear moment action together. The stress components complement each other and give full play to each other, and the whole connecting node has definite force transmission, reliable connection and good overall performance.
In conclusion, the invention is suitable for the development of an assembled steel structure, the welded part of the vertical web connecting plate 7 is completed in a factory, bolts are adopted for assembly on site, the joint force transmission is reasonable and reliable, the design is standardized, the manufacture is standardized, the installation is accurate and convenient, the invention is suitable for the assembled connection of the rectangular steel pipe column 1 and the H-shaped steel beam 2 structure, and meanwhile, the joint is a semi-rigid joint, has good ductility and strong anti-seismic energy consumption capability.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are within the scope of the present invention.
Claims (7)
1. The rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint comprises a rectangular steel pipe column (1) and an H-shaped steel beam (2), and is characterized by further comprising a connection force transmission component; the connecting force transmission component comprises an upper rectangular hoop (3), a lower rectangular hoop (4), an upper inequality angle steel (5), a lower inequality angle steel (6) and a vertical web connecting plate (7);
the upper inequality angle steel (5) comprises an upper inequality angle steel short limb (51) and an upper inequality angle steel long limb (52), the inner wall of the upper inequality angle steel short limb (51) is attached to the outer wall of the rectangular steel pipe column (1), and the lower surface of the upper inequality angle steel long limb (52) is attached to the upper flange (21) of the H-shaped steel beam (2) and fixedly connected with the upper flange (21) of the H-shaped steel beam (2);
the lower inequality angle steel (6) comprises a lower inequality angle steel short limb (61) and a lower inequality angle steel long limb (62), the inner wall of the lower inequality angle steel short limb (61) is attached to the outer wall of the rectangular steel pipe column (1), and the lower surface of the lower inequality angle steel long limb (62) is attached to the lower flange (22) of the H-shaped steel beam (2) and fixedly connected with the lower flange (22) of the H-shaped steel beam (2);
the upper rectangular hoop (3) is sleeved on the outer side of the upper unequal limb angle short limb (51), and the upper unequal limb angle short limb (51) is pressed on the rectangular steel pipe column (1); the upper rectangular hoop (3) is fixedly connected with the rectangular steel pipe column (1) through a one-way locking high-strength bolt (10) and fixedly connects the upper unequal angle steel short limb (51) on the rectangular steel pipe column (1);
the lower rectangular hoop (4) is sleeved on the outer side of the lower unequal limb angle short limb (61), and the lower unequal limb angle short limb (61) is pressed on the rectangular steel pipe column (1); the lower rectangular hoop (4) is fixedly connected with the rectangular steel pipe column (1) through a one-way locking high-strength bolt (10) and fixedly connects the lower unequal angle steel short limb (61) on the rectangular steel pipe column (1);
the vertical web connecting plate (7) is adhered to the web (23) of the H-shaped steel beam (2) and fixedly connected with the web (23) of the H-shaped steel beam (2), and the inner end part of the vertical web connecting plate (7) is fixedly connected with the wall plate of the rectangular steel pipe column (1);
the length of the upper unequal limb angle long limb (52) is changed from equal length of the upper unequal limb angle short limb (51) to equal width of the upper flange (21) of the H-shaped steel beam (2) through arc chamfering at the back position of the upper unequal limb angle long limb (52); the length of the upper unequal angle steel short limb (51) is equal to the width of the rectangular steel pipe column (1); the length of the lower inequality angle steel long limb (62) is changed from equal to the length of the lower inequality angle steel short limb (61) to equal to the width of the lower flange (22) of the H-shaped steel beam (2) through arc chamfering at the limb back position of the lower inequality angle steel long limb (62); the length of the lower unequal angle steel short limb (61) is equal to the width of the rectangular steel pipe column (1);
the sizes of the upper rectangular hoops (3) and the lower rectangular hoops (4) are determined according to the size of the section of the rectangular steel pipe column (1).
2. The rectangular steel pipe column-H steel beam full-bolting semi-rigid joint according to claim 1, characterized in that the thickness of said upper rectangular cuff (3) is greater than or equal to the wall thickness of said rectangular steel pipe column (1), the distance between said upper rectangular cuff (3) and said rectangular steel pipe column (1) being equal to the thickness of said upper inequality angle steel (5); the thickness of the lower rectangular hoop (4) is larger than or equal to the wall thickness of the rectangular steel pipe column (1), and the distance between the lower rectangular hoop (4) and the rectangular steel pipe column (1) is equal to the thickness of the lower unequal angle steel (6).
3. The rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node according to claim 1, wherein an upper flange (21) and a lower flange (22) of the H-shaped steel beam (2) are fixedly connected with the upper inequality angle steel long limb (52) and the lower inequality angle steel long limb (62) through first high-strength bolts (8) respectively.
4. The rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node according to claim 1, characterized in that the vertical web connection plate (7) is fixedly connected with the web (23) of the H-shaped steel beam (2) through a first high-strength bolt (8); the inner end part of the vertical web connecting plate (7) is fixedly connected with the wall plate of the rectangular steel pipe column (1) in a welding mode.
5. A construction method of the rectangular steel pipe column-H steel beam full bolt connection semi-rigid joint according to any one of claims 1 to 4, comprising the steps of:
step 1, respectively manufacturing an upper rectangular hoop (3), a lower rectangular hoop (4), an upper inequality angle steel (5) and a lower inequality angle steel (6); the outer wall of the rectangular steel pipe column (1) is fixedly connected with a vertical web connecting plate (7);
step 2, installing lower unequal limb angle steel (6) and a lower rectangular hoop (4), wherein the lower rectangular hoop (4) is sleeved on the outer side of a lower unequal limb angle steel short limb (61) and is connected with a rectangular steel pipe column (1) through a one-way locking high-strength bolt (10);
step 3, installing and positioning an H-shaped steel beam (2), and connecting a lower flange (22) of the H-shaped steel beam (2) with a lower unequal limb angle long limb (62) through a first high-strength bolt (8);
step 4, installing unequal limb angle steel (5) and an upper rectangular hoop (3), wherein the upper rectangular hoop (3) is sleeved on the outer side of the short limb (51) of the unequal limb angle steel and is connected with the rectangular steel pipe column (1) through a one-way locking high-strength bolt (10);
step 5, connecting the upper flange (21) of the H-shaped steel beam (2) with the upper unequal limb angle steel long limb (52) through a first high-strength bolt (8),
and 6, connecting the vertical web connecting plate (7) with the web (23) of the H-shaped steel beam (2) through a second high-strength bolt (9), and completing the assembly of the joints.
6. The construction method of the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node according to claim 5, wherein in the step 1, the manufacturing method of the upper rectangular hoop (3) and the lower rectangular hoop (4) is as follows: after the design of the regular section size, the rectangular steel plate is welded to form the rectangular closed hoop.
7. The construction method of the rectangular steel pipe column-H steel beam full-bolt connection semi-rigid node according to claim 5, wherein in the step 1, the manufacturing method of the upper rectangular hoop (3) and the lower rectangular hoop (4) is as follows: after the design of the regular section size, the steel pipe is cut off through a complete rectangular steel pipe to form a rectangular closed hoop.
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| CN201811638078.0A CN109537726B (en) | 2018-12-29 | 2018-12-29 | Rectangular steel pipe column-H steel beam full-bolt connection semi-rigid joint and construction method |
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