CN109653358B - Big headroom from restoring to throne steel frame center support system - Google Patents
Big headroom from restoring to throne steel frame center support system Download PDFInfo
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- CN109653358B CN109653358B CN201910071681.3A CN201910071681A CN109653358B CN 109653358 B CN109653358 B CN 109653358B CN 201910071681 A CN201910071681 A CN 201910071681A CN 109653358 B CN109653358 B CN 109653358B
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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
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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
- 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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- 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
- E04B2001/2466—Details of the elongated load-supporting parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a large-clearance self-resetting steel frame center supporting system, and belongs to the field of structural engineering. Each component of the system is processed by a factory and is connected and installed by high-strength bolts, so that the high requirements on the processing precision and quality of the components and the quick assembly are easy to realize, and the concept of an assembled green steel structure is met; the inclined strut system is an assembled buckling-restrained Y-shaped strut, energy dissipation elements are arranged at the positions of the inclined struts, the overall stability of the inclined strut system and the overall lateral force resistance of the structure are improved, and meanwhile, door openings can be formed at the positions where the struts are arranged, so that the design form is more flexible, and different structural forms can be met; through increasing novel combination from resetting means, can improve the whole bearing capacity of roof beam and can avoid the combination from the prestressing force load to the I-beam section that the cable pretension arouses among the resetting means, through exerting prestressing force cable pretension, make the structure can control plastic deformation's development and the accumulation of damage, make the structure have good anti-seismic performance and reset ability.
Description
Technical Field
The invention relates to a large-clearance self-resetting steel frame center supporting system, and belongs to the field of structural engineering.
Background
With the acceleration of urbanization process, the development and technical level of the building field are continuously promoted, and in addition, the influence of the problems of environmental pollution and resource waste, the defect of poor environmental protection property existing in the traditional building system is gradually exposed, and the green assembly type steel structure begins to become the main type of the building system. Compared with the traditional system, the system has remarkable advantages in the aspects of construction quality, construction efficiency and the like. The building block is a representative construction method, greatly accelerates the construction speed and saves the engineering fund. The method is applied to the design and development of various building systems, and is the main trend of future development in the building field.
The traditional frame support system adopts a linear type inclined strut, the space reserved at the opening position of the center part of the structure is smaller, however, in the practical structural engineering problem, a plurality of structures need to be windowed and door-opened, a larger opening is needed, the traditional frame support system cannot meet the requirement, and the inclined strut of the traditional frame support system has no energy consumption section, so that buckling damage is easy to occur at a certain part of the structure. The unreasonable design of traditional frame support body tie beam column node will lead to the emergence of "strong component weak point" condition, makes the structure take place serious earthquake damage under the earthquake load effect, threatens people's life and property safety. The existing research shows that the aim of outward movement of the plastic hinge can be achieved by performing targeted reinforcement on beam-column joints or weakening a specific area on a beam, so that the beam-column joints are protected, and the design requirements of 'strong joint and weak member' are met; meanwhile, the floor slabs and the beam sections are pre-assembled and then transported to a construction site for assembly, so that the time for on-site concrete pouring can be greatly saved; in addition, a recoverable functional structure capable of recovering the use function without or with slight repair after an earthquake is a research hotspot in the field of international earthquake engineering in recent years, not only can protect the life and property safety of people in the earthquake, but also can recover the use function as soon as possible after the earthquake, so that the idea of the recoverable functional structure needs to be implemented in the research and development design work of a new structure so as to realize the transformation of the building from singly pursuing collapse resistance to considering the repairable capability after the earthquake.
In order to overcome the problems, the invention provides a large-clearance self-resetting steel frame center supporting system with a flange plate. By adding the novel combined self-resetting device, the integral bearing capacity of the beam can be improved, and the overstress load on the I-beam section caused by the pretension of the stay cable in the combined self-resetting device can be avoided; the energy dissipation element is arranged at the inclined strut, the energy dissipation element absorbs energy when the inclined strut is stressed, the inclined strut is prevented from being damaged by instability, the integral lateral resistance of the structure is improved, the integral lateral resistance and the integral stability of the structure are improved, and meanwhile, the door opening can be formed in the position where the support is arranged, so that the design form is more flexible, and different structural forms can be met.
Disclosure of Invention
The invention provides a large-clearance self-resetting steel frame center supporting system, aiming at solving the self-resetting problem of a frame system; meanwhile, a novel supporting system is introduced, and the problem of opening door openings in the frame is solved.
In order to achieve the purpose, the invention adopts the following technical means:
the utility model provides a big headroom from restoring to throne steel frame center support system which characterized in that: the system consists of two welded and combined square steel pipe columns, an I-beam section with inclined support rods, two Y-shaped inclined struts, two inclined strut energy consumption sections, a group of combined self-resetting devices, two groups of first connecting devices, two groups of second connecting devices, two groups of third connecting devices, two groups of fourth connecting devices and two groups of fifth connecting devices; compared with a steel truss support and steel truss barrel structure system, the system is characterized in that energy dissipation elements are arranged at the positions of the inclined struts, the energy dissipation elements absorb energy through self internal buckling deformation when the inclined struts are stressed, the bearing capacity and stability of the inclined strut system are improved, meanwhile, the energy dissipation elements can be quickly installed through connecting devices, the assembled buckling-restrained support is realized, the integral lateral resistance of the structure is improved, the integral lateral resistance and the integral stability of the structure are improved, and meanwhile, door openings can be formed at the positions where the supports are arranged, so that the design form is more flexible, and different structural forms can be met; the system has a post-earthquake self-resetting function, the prestressed stay cable is fixed through a tool, the cantilever beam section and the I-beam section are tightly connected through a first connecting device, and the combination of the upper flange inner cover plate, the lower flange cover plate and the prestressed stay cable can improve the overall bearing capacity of the beam and avoid the overstress load on the I-beam section caused by the pretension of the prestressed stay cable in the combined self-resetting device; the cantilever beam section is tightly propped against the I-beam section, no gap is left after installation, the prestress loss of a guy cable caused by the rotation of the beam end is prevented, if the structure generates residual deformation after earthquake, the deformation is gradually recovered by loosening the connecting bolt, and the earthquake resistance and the resetting capability of the structure are improved; the cantilever beam section and the I-beam section are connected through the cover plate, the upper flange inner cover plate is designed in an inner cover plate mode, connection with a floor slab is facilitated, the lower flange cover plate is designed in an outer cover plate mode, the purpose is to install the cantilever beam section lower flange cover plate firstly, and the lower flange cover plate can serve as a support of the I-beam section in the installation process, so that construction speed is increased, construction quality is improved, and the assembled steel structure is suitable for development.
The utility model provides a big headroom from restoring to throne steel frame center support system which characterized in that: because the flange and the beam rib of the cantilever beam section and the I-shaped beam section are different in thickness, the I-shaped beam section upper flange base plate is added on the inner side of the upper flange inner cover plate, and the I-shaped beam section web base plate is added on the inner side of the inverted L-shaped web shear plate, so that the two beam sections at the connecting position are the same in thickness, and then the cantilever beam section and the I-shaped beam section are connected together through the first connecting device.
The utility model provides a big headroom from restoring to throne steel frame center support system which characterized in that: y type bracing passes through connecting device with each main part component and is connected, constitutes a novel support system, should support when guaranteeing the bearing capacity, can set up the entrance to a cave again simultaneously in the position that sets up the support, and the design is nimble, can satisfy the needs of different structural style, and should support and form with bolted connection by each part, accords with the advantage of assembled steel construction.
All components of the device are processed in factories, are connected and installed by high-strength bolts on site, are easy to realize high requirements on component processing precision and quality and quick assembly, and accord with the construction characteristics of assembled steel structures.
The advantages of the patent are mainly shown in the following aspects:
(1) the bracing is assembled buckling restrained Y font support. Bracing position department is equipped with energy dissipation component, energy dissipation component warp the absorbed energy through self inside bucking during the bracing atress, make the bracing bearing capacity promote, prevent that the bracing from taking place the unstability destruction, improve bracing system stability, energy dissipation component passes through connecting device simultaneously and can realize quick installation, realize assembled buckling restrained brace, the whole anti side force of structure improves, improve the whole anti side force of structure, when overall stability, can set up the position of support and set up the door opening, make the design more nimble, can satisfy different structural style.
(2) There is a combined self-resetting device in the structure. The combined self-resetting device consists of a first connecting device, a prestressed inhaul cable and a tool, and compared with the traditional inhaul cable combined self-resetting device, the combined self-resetting device formed by the cover plate and the prestressed inhaul cable has the advantages that under the condition that the prestressed inhaul cable has the same pretension, the integral bearing capacity of a beam adopting the combined self-resetting device is higher; under the condition that the bearing capacity of the beam is the same, the requirement for the pretension of the stay cable of the combined self-resetting device is reduced, and the overstress load of the pretension of the stay cable on the I-shaped beam section is avoided; by applying the pretension of the prestressed stay cable, the structure controls the development of plastic deformation and the accumulation of damage, so that the structure has good anti-seismic performance and resetting capability.
(3) The cantilever beam section and the I-beam section are connected through the cover plate, the upper flange inner cover plate is designed in an inner cover plate mode, connection with a floor slab is facilitated, the lower flange cover plate is designed in an outer cover plate mode, the purpose is to install the cantilever beam section lower flange cover plate firstly, and the lower flange cover plate can serve as a support of the I-beam section in the installation process, so that construction speed is increased, construction quality is improved, and the assembled steel structure is suitable for development.
(4) And segmenting the ultra-long and ultra-heavy component. The invention is based on the design concept of sectional assembly of components, the whole structure is divided into a plurality of sections which are connected into a whole through bolts, the frame supporting and holing system can effectively overcome the inconvenience of the traditional long and heavy components in the processes of processing, transporting and installing, the transporting and hoisting cost is reduced, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a three-dimensional view of a high clearance self-resetting steel frame center support system;
FIG. 2 is a disassembled view of a large headroom self-resetting steel frame center support system;
FIG. 3 is a front view of a large headroom self-resetting steel frame center support system;
FIG. 4 is a side view of a high clearance self-resetting steel frame center support system;
FIG. 5 is a top view of a high clearance self-resetting steel frame center support system;
FIG. 6 is a three-dimensional view of a large clearance self-resetting steel frame center support system bracing;
fig. 7 is a sectional view of a brace of a large headroom self-resetting steel frame center support system.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to fig. 1 to 7.
As shown in fig. 1 to 7, a steel frame central support system capable of opening a door comprises the following components:
1-welding a combined square steel pipe column;
2-I-beam section with inclined support rod;
3-Y-shaped diagonal bracing;
4-bracing energy consumption section;
5-Combined self-resetting device;
6-first connecting means;
7-second connecting means;
8-third connecting means;
9-fourth connecting means;
10-fifth connecting means;
11-square steel tube upper column;
12-square steel tube central column;
13-lower column of square steel tube;
14-upper cantilever section;
15-lower cantilever section;
16-tooling;
17-prestressed stay cable;
18-upper flange inner cover plate;
19-bottom flange cover plate;
20-inverted L-shaped web shear plate;
21-flange backing plate on the I-beam section;
22-web plate backing plate of I-shaped beam section.
As shown in fig. 1 to 7, the large-clearance self-resetting steel frame center support system includes two welded and combined square steel pipe columns 1, an i-beam section 2 with diagonal support rods, two Y-shaped diagonal braces 3, two diagonal brace energy dissipation sections 4, a group of combined self-resetting devices 5, two first connecting devices 6, two second connecting devices 7, two third connecting devices 8, two fourth connecting devices 9, and two fifth connecting devices 10; the welded and combined square steel pipe column 1 is formed by welding an upper square steel pipe column 11, a middle square steel pipe column 12, a lower square steel pipe column 13, an upper cantilever beam section 14, a lower cantilever beam section 15 and an inclined support section, a tool 16 is arranged at an arc striking position of the upper cantilever beam section and used for fixing a prestress cable 17 and applying pretightening force, an I-shaped beam section 2 with an inclined support rod is formed by connecting the inclined support rod and the I-shaped beam section through a high-strength bolt, a combined self-resetting device is composed of the prestress cable 17, the tool 16 and a first connecting device 6, the first connecting device is composed of an upper flange inner cover plate 18, a lower flange cover plate 19, an inverted L-shaped web shear plate 20 and a high-strength bolt group, an I-shaped beam section upper flange base plate 21 is added on the inner side of the upper flange inner cover plate, an I-shaped beam section web base plate 22 is added on the inner side of the inverted L-shaped web shear plate, and the second connecting device 7 and, The Y-shaped diagonal brace is connected with the welded and combined square steel pipe column, the I-shaped beam section with the diagonal support rod and the diagonal energy consumption section respectively through a second connecting device, a third connecting device and a fourth connecting device, and the diagonal energy consumption section is connected with the Y-shaped diagonal brace and the welded and combined square steel pipe column respectively through the fourth connecting device and the fifth connecting device.
Claims (2)
1. The utility model provides a big headroom from restoring to throne steel frame center support system which characterized in that: the system consists of two welded and combined square steel pipe columns, an I-beam section with inclined support rods, two Y-shaped inclined struts, two inclined strut energy consumption sections, a group of combined self-resetting devices, two groups of first connecting devices, two groups of second connecting devices, two groups of third connecting devices, two groups of fourth connecting devices and two groups of fifth connecting devices; the first connecting device comprises two upper flange inner cover plates, a lower flange cover plate, two inverted L-shaped web shearing plates and a high-strength bolt group, wherein the two upper flange inner cover plates are positioned on the inner sides of the upper flanges of the I-beam sections and are symmetrically arranged on two sides of the web of the I-beam sections, the upper flange inner cover plates and the lower flange cover plates are used for connecting the cantilever beam sections and the upper and lower flanges of the I-beam sections, the inverted L-shaped web shearing plates are used for connecting the web of the cantilever beam sections and the web of the I-beam sections, the L-shaped corner positions of the inverted L-shaped web shearing plates are close to the upper flanges, and the inverted L-shaped web shearing plates tightly prop against the upper; all components of the system are processed by factories and are connected and installed by high-strength bolts on site; the system reduces the requirement of the prestress of the inhaul cable through the combined self-resetting device; the system controls the development of plastic deformation and the accumulation of damage by applying the pretension of the prestressed stay cable, so that the structure has good anti-seismic performance and resetting capability; the cantilever beam section and the I-beam section of the system are connected by adopting the cover plate, the inner cover plate of the upper flange is designed in an inner cover plate mode, so that the cantilever beam section and the I-beam section are conveniently connected with a floor, and the lower flange cover plate is designed in an outer cover plate mode; the system inclined strut is an assembled buckling-restrained Y-shaped strut, an energy dissipation element is arranged at the position of the inclined strut, when the inclined strut is stressed, the energy dissipation element absorbs energy through self internal buckling deformation, so that the bearing capacity of the inclined strut is improved, the inclined strut is prevented from being unstably damaged, the stability of an inclined strut system is improved, meanwhile, the energy dissipation element can be quickly installed through a connecting device, the assembled buckling-restrained strut is realized, the integral lateral resistance of the structure is improved, the integral lateral resistance and the integral stability of the structure are improved, meanwhile, a door opening can be formed at the position where the strut is arranged, the design form is more flexible, and different structural forms can be met; the welded and combined square steel pipe column comprises a square steel pipe upper column, a square steel pipe middle column, a square steel pipe lower column, two cantilever beam sections and two diagonal support members, wherein the square steel pipe upper column is as high as the cantilever beam sections, the square steel pipe lower column is as high as the cantilever beam sections, the square steel pipe upper column is welded with the cantilever beam sections, the square steel pipe lower column is welded with another cantilever beam, the upper end of the square steel pipe lower column is welded with the lower end of the square steel pipe middle column, the lower end of the square steel pipe upper column is welded with the upper end of the square steel pipe middle column, the two diagonal support members are welded at the structural corner positions on the same side face of the square steel pipe middle column, the diagonal support members at the corner positions on the upper part of the middle column are connected with Y-shaped diagonal supports through second connecting devices, and the diagonal support members; the I-beam section with the diagonal braces comprises two diagonal braces and an I-beam section, the two diagonal braces are connected to the middle part of the lower flange of the I-beam section through a high-strength bolt group, the two diagonal braces are splayed, and the lower parts of the two diagonal braces are connected with the Y-shaped diagonal braces through a third connecting device; the lower end of the Y-shaped inclined strut is connected with the upper end of the energy consumption section of the inclined strut through a fifth connecting device; the combined self-resetting device consists of two groups of first connecting devices, four tools and a prestressed inhaul cable, wherein the tools are welded at the arc striking position of the cantilever beam section, and the prestressed inhaul cable is fixed through the tools; the cantilever beam section with the square steel pipe upper column is connected with the I-beam section through a first connecting device, a gap is not left in the middle, the flange heights of the cantilever beam section and the I-beam section are different from the thickness of a beam rib, the flange height of the connecting position of the two beam sections is the same by adding an I-beam section upper flange base plate on the inner side of an upper flange inner cover plate, the flange heights of the connecting position of the two beam sections are the same by adding an I-beam section web base plate on the inner side of an inverted L-shaped web shear plate, the web thickness of the connecting position of the two beam sections is the same, the I-beam section upper flange base plate is tightly attached to the I-beam section upper flange, the upper flange inner cover plate is tightly attached to the I-beam section upper flange base plate and the cantilever beam section upper flange, the lower flange cover plate is tightly attached to the I-beam.
2. The large headroom self-resetting steel frame center support system of claim 1, wherein: the second connecting device and the third connecting device are composed of two flange cover plates, two straight web shear plates and a high-strength bolt group; the fourth connecting device and the fifth connecting device are composed of high-strength bolt groups, and the bolts are annularly arranged along the periphery of the plate.
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| CN201910071681.3A CN109653358B (en) | 2019-01-25 | 2019-01-25 | Big headroom from restoring to throne steel frame center support system |
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| CN201910071681.3A CN109653358B (en) | 2019-01-25 | 2019-01-25 | Big headroom from restoring to throne steel frame center support system |
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| CN109653358B true CN109653358B (en) | 2021-04-09 |
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| JP5340998B2 (en) * | 2010-03-03 | 2013-11-13 | 長岡鉄工株式会社 | Construction method of seismic reinforcement steel brace |
| CN103088918B (en) * | 2013-02-05 | 2015-12-09 | 北京建筑大学 | There is after a kind of shake the novel pre-stressed steel frame beam column joint of Self-resetting function |
| CN203296166U (en) * | 2013-06-14 | 2013-11-20 | 天津市建筑设计院 | Supporting structure of main module unit in module building |
| CN105735472B (en) * | 2016-04-17 | 2018-04-06 | 北京工业大学 | A kind of assembled beam-column nodal connection device for recovering function |
| CN206052956U (en) * | 2016-08-31 | 2017-03-29 | 江西杭萧钢构有限公司 | A kind of H types cantilever beam-column splicing construction |
| CN106869325A (en) * | 2017-02-17 | 2017-06-20 | 北京工业大学 | A kind of assembled channel-section steel for recovering function punches beam column node connection device |
| CN106869316B (en) * | 2017-03-12 | 2019-01-25 | 东北石油大学 | The beam column edge of a wing is the group frame system and construction method of concrete filled steel tube |
| CN109057013A (en) * | 2018-07-22 | 2018-12-21 | 北京工业大学 | Self-resetting can assemble multistage beam concentrically braced steel frame after shake |
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