CN114033059A - Novel combination device of prestressed steel strand-sliding connection-energy consumption section - Google Patents
Novel combination device of prestressed steel strand-sliding connection-energy consumption section Download PDFInfo
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- CN114033059A CN114033059A CN202111238862.4A CN202111238862A CN114033059A CN 114033059 A CN114033059 A CN 114033059A CN 202111238862 A CN202111238862 A CN 202111238862A CN 114033059 A CN114033059 A CN 114033059A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 238000005265 energy consumption Methods 0.000 title claims abstract description 55
- 229920005549 butyl rubber Polymers 0.000 claims description 12
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000003351 stiffener Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/10—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a novel combination device of a prestressed steel strand, a sliding connection section and an energy consumption section, which mainly comprises end beams on two sides, a middle steel beam, an energy consumption section, a supporting and connecting plate and the prestressed steel strand. The prestressed steel strands are anchored on the transverse stiffening ribs of the end beams at two sides after initial prestress is applied, the end beams are connected with the middle steel beam through shear resisting plates, and the energy consumption sections are fixed on the middle steel beam and the support connecting plate with the long round holes through bolts. When the novel device is applied to a Y-shaped eccentric supporting structure, the structure can consume earthquake energy by using the reaming bolt connection type energy consumption section under the earthquake action, and the damage of the structure is concentrated on the replaceable energy consumption section; and the residual deformation of the structure is reduced by combining the prestressed steel strands with the ultra-low friction sliding connection. The Y-shaped eccentric supporting structure provided with the novel device has the advantages of good anti-seismic performance, quick recovery after earthquake, easy assembly and replacement and the like, and can realize considerable economic and social benefits.
Description
Technical Field
The invention relates to the technical field of assembled building structures, in particular to a novel combined device of a prestressed steel strand, a sliding connection section and an energy consumption section.
Background
The aim of four-level earthquake fortification of a recoverable functional structure, namely 'small earthquake and medium earthquake damage prevention, large earthquake replacement, repairable and large earthquake collapse prevention' is proposed and increasingly paid attention to, and currently, the nation increasingly pays attention to the earthquake resistance of a building structure and the quick recovery capability of functions after earthquake. The Y-shaped eccentric supporting structure system is a structure system with good earthquake resistance and post-earthquake function recovery capability, the input energy is dissipated through the energy consumption section under the earthquake action, the damage is only concentrated on the energy consumption section, the main structure is effectively protected from being damaged, but the structure of the Y-shaped eccentric supporting structure can generate larger residual deformation under the earthquake action, the overlarge residual deformation directly influences the post-earthquake function recovery capability of the structure, the post-earthquake recovery efficiency of the structure is reduced, and the repair cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a novel combined device of a prestressed steel strand, a sliding connection section and an energy consumption section, and solves the problems of large structure residual deformation and large damage of a Y-shaped eccentric supporting structure under the action of an earthquake.
In order to solve the existing problems, the prestressed steel strand and the ultralow-friction sliding connection are applied to the Y-shaped eccentric supporting structure, so that the Y-shaped eccentric supporting structure can realize the quick recovery of the structural function after the earthquake. Under the action of earthquake, the restoring force of the prestressed steel strand is combined with the ultra-low friction sliding connection, so that the residual deformation of the structure can be effectively reduced; the reaming bolt connection type energy consumption section can increase the ductility of the structure. By the means, the Y-shaped eccentric supporting structure can effectively improve the anti-seismic performance and the function recovery capability after earthquake, and meets the new trend and new requirements of the anti-seismic design of the structure.
Based on the requirements, the invention provides a novel combined device of prestressed steel strands, a sliding connection section and an energy consumption section. The novel combined device has the advantages of good anti-seismic performance, strong capability of restoring the structural function after the earthquake, simple structure, easy realization and the like. Replaceable energy dissipation section for dissipating energy in anticipation of earthquake
The earthquake energy entering the structure ensures that the main structure is not damaged, after the earthquake, the ultra-low friction sliding connection is combined with the restoring force of the prestressed steel strand, the structural member is pulled back to the initial position, the residual deformation of the structure is reduced, and the high-efficiency self-resetting of the structure is realized; in addition, in order to reasonably exert the energy consumption capacity of the energy consumption section, the energy consumption section is connected in a sliding mode through a reaming bolt, and deformation and damage of the energy consumption section under the earthquake action are reduced. The prestressed steel strand resetting mechanism is combined with the ultralow friction sliding connection and the high-ductility energy consumption section, so that the residual deformation of the structure can be well controlled, the functional recovery capability of the structure after the earthquake is effectively improved, and considerable economic and social benefits are achieved.
In order to achieve the purpose, the invention provides the following technical scheme: a novel combination device of a prestressed steel strand, a sliding connection and an energy consumption section comprises end beams on two sides, a middle steel beam, the prestressed steel strand, the energy consumption section and a supporting and connecting plate. The end beam is provided with a transverse stiffening rib I and a longitudinal stiffening rib along two sides of a web plate, round holes are formed in the transverse stiffening rib I, an end plate I and two shear resisting plates are arranged at the end part of the end beam, round holes are reserved in the end plate I, and round bolt holes are formed in the shear resisting plates. The middle steel beam is provided with long round holes I on two sides of a web plate, reinforcing plates are arranged on flanges on two sides of the web plate, a transverse stiffening rib II is arranged at a position corresponding to the energy consumption section of the middle steel beam, a round hole is reserved for a prestressed steel strand by the transverse stiffening rib II, and a bolt hole is reserved at a position corresponding to the energy consumption section of a lower flange of the middle steel beam. In the sliding connection, the round hole of the shear-resistant plate and the long round hole I of the middle steel beam are connected through the high-strength bolt, and the butyl rubber gasket is arranged between the shear-resistant plate and the middle steel beam. And the prestressed steel strands are fixed on the transverse stiffening ribs I of the end beams at the two sides. The end beams at the two sides and the middle steel beam are drawn together by combining the sliding connection with the prestressed steel strands to form a complete steel beam. And two ends of the energy consumption section are respectively provided with an end plate II and an end plate III, and bolt holes are formed in the end plates II and III. The support connecting plate is provided with a long round hole II, a brass plate is arranged between the energy consumption section and the support connecting plate, and a butyl rubber gasket is arranged between the support connecting plate and the lower screw cap.
Preferably, the size of the oblong hole I is required to meet the requirements of sliding and rotating.
Preferably, the circle centers of the round holes on the transverse stiffening rib I, the end plate I and the transverse stiffening rib II are on the same horizontal line, and the diameter of the round hole is not smaller than that of the prestressed steel strand.
Preferably, the number of the longitudinal stiffening ribs I is the number of the prestressed steel strands minus 2.
Preferably, the position of the transverse stiffening rib II and the flange of the energy consumption section are kept on the same vertical line, and the thickness of the transverse stiffening rib II is the same as that of the flange of the energy consumption section.
Preferably, the energy dissipation section is fixedly connected with the beam section through an end plate II through a high-strength bolt, the width of the end plate II is as wide as that of the middle steel beam, the long edge of the end plate II extends out of the energy dissipation section by 100mm, and the end plate II is connected with the beam section through high-strength bolts on the inner side and the outer side of the energy dissipation section.
Preferably, the opening positions of the end plate III and the end plate II are the same. The energy consumption section is connected with the supporting and connecting plate through high-strength bolts by an end plate III and a brass plate, and the end plate III is connected with the supporting and connecting plate through high-strength bolts at the inner side and the outer side of the energy consumption section.
Preferably, the size of the long side of the long round hole II of the supporting and connecting plate is designed according to the expected earthquake requirement, and the center position of the long round hole II and the circle center position of the round hole on the end plate III are on the same vertical line. The supporting connection plate is connected with the end plate III through a high-strength bolt.
The invention provides a novel combination device of a prestressed steel strand, a sliding connection and an energy consumption section, which has the following beneficial effects:
the novel combined device fixes the energy consumption section on the combined device through the high-strength bolt, and can achieve the expected target of being replaceable after the earthquake. The butyl rubber gasket is arranged in the sliding connection between the end beam and the middle part, so that the effect of ultralow-friction sliding rotation can be achieved, and the butyl rubber gasket is low in price and easy to process. After the steel strand is tensioned, the end beams and the middle steel beam can be tied together, and great rotational rigidity is provided for sliding connection. Under the action of earthquake, the sliding connection forms an opening, the steel strand is stretched, and the restoring force of the prestressed steel strand can pull the structural member back to the initial position after the earthquake. The restoring force of the prestressed steel strand is combined with the sliding connection of the reaming bolt, so that the residual deformation of the structural member can be effectively reduced, and the expected self-resetting goal is achieved.
The energy consumption section is connected with the long round hole in the supporting and connecting plate through the end plate III, so that under the conditions of frequent earthquakes and fortification earthquakes, the energy consumption section only consumes energy through sliding friction of the end plate III and the supporting and connecting plate, the energy consumption section is kept in an elastic state, and under the action of a larger earthquake, the energy consumption section enters a plastic state to participate in energy consumption. In summary, the structure assembled with the novel combined device has the advantages of good anti-seismic performance, strong energy consumption capability, quick recovery of functions after earthquake, easy assembly, and the like, and can realize considerable economic and social benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic view of a Y-shaped eccentric supporting structure with a novel combination device.
Fig. 2 is a schematic view of a novel combination device of prestressed steel strands, a sliding connection and an energy consumption section.
FIG. 3 is a schematic view of an intermediate steel beam according to the present invention.
FIG. 4 is a schematic view of an end beam, transverse stiffeners I, longitudinal stiffeners, end plates I, and shear plate resistance in the present invention.
FIG. 5 is a schematic diagram of the energy dissipation section, end plate II and end plate III of the present invention.
FIG. 6 is a schematic view of the support connection plate of the present invention.
Fig. 7 is a sectional view taken along line a-a of fig. 2.
Fig. 8 is a schematic view of B-B of fig. 2.
Fig. 9 is a schematic view of C-C of fig. 2.
Fig. 10 is a schematic view of fig. 2D-D.
In the figure: 1. an end beam; 2. an intermediate steel beam; 3. an energy consumption section; 4. supporting the connecting plate; 5. pre-stressed steel strands; 6. a transverse stiffening rib I; 7. a longitudinal stiffener; 8. an end plate I; 9. shearing resisting plates; 10. a reinforcing plate; 11. a transverse stiffening rib II; 12. an end plate II; 13. an end plate III; 14. a horizontal bolt; 15. A vertical bolt I; 16. a vertical bolt II; 17. butyl rubber gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a novel combined device of prestressed steel strand-sliding connection-energy consumption section.
The energy-saving steel beam comprises end beams 1 on two sides, a middle steel beam 2, an energy consumption section 3, a supporting and connecting plate 4 and prestressed steel strands 5. An end plate I8 is welded at the end part of the end beam 1 at two sides, two shear resisting plates 9 are welded on the end plate I8, transverse stiffening ribs I6 are arranged along two sides of a web plate of the end beam 1, and a longitudinal stiffening rib 7 is arranged between the end plate I8 and the transverse stiffening rib I6 to form a complete end beam section, wherein the number of the beam sections is 2 in the invention and are respectively arranged along the central axis of the middle steel beam 2 in a mirror image manner;
the middle steel beam 2 is provided with a long round hole I in webs on two sides, the size of the long round hole I can meet the sliding and rotating requirements, reinforcing plates 10 are arranged on flanges on two sides, and transverse stiffening ribs II 11 are arranged at the positions corresponding to flanges 3 of the energy consumption section, specifically, the height of the middle steel beam 2 and the thickness of the reinforcing plates 10 are equal to that of the end beam 1 and slightly smaller than that of the end plate I8, and the thickness of the transverse stiffening ribs II 11 is equal to that of the flanges of the energy consumption section 3. And round bolt holes are formed in the positions, corresponding to the long round holes of the web plate of the middle steel beam 2, of the shear resistant plates 9. Butyl rubber gaskets 17 are arranged between the shear resistant plates 9 and the web plates of the middle steel beams 2, and the two shear resistant plates 9, the two butyl rubber gaskets 17 and the web plates of the middle steel beams 2 are connected together by the horizontal bolts 14 to form the sliding connection in the invention. Specifically, an end beam 1, a transverse stiffening rib I6, a longitudinal stiffening rib 7, an end plate I8 and two shear resisting plates 9 are welded into a complete end beam section; then, a web plate of the middle steel beam 2 extends between the two shear-resistant plates 9, a butyl rubber gasket 17 is arranged between the two shear-resistant plates, the beam sections are connected with the middle steel beam 2 through horizontal bolts 14, the middle steel beam 2 is tightly attached to the end plate I8, and no gap exists between the shear-resistant plates 9, the butyl rubber gasket 17 and the web plate of the middle steel beam 2.
Both sides end beam 1 sets up horizontal stiffening rib I6 in web both sides, sets up vertical stiffening rib 7 between horizontal stiffening rib I6 and the end plate I8 to reserve the round hole on horizontal stiffening rib I6, end plate I8 and horizontal stiffening rib II 11, its centre of a circle of above-mentioned round hole should be in same water flat line. And prestressed steel strands 5 applying initial prestress penetrate through the circular holes and are anchored on the transverse stiffening ribs I6 on the two sides, and the prestressed steel strands 5 are symmetrically arranged along the two sides of the web plate of the middle steel beam 2. The prestressed steel strands 5 are combined with the sliding connection to draw the end beams 1 at the two sides and the middle steel beam 2 together to form a complete steel beam.
3 both ends of power consumption section weld end plate II 12 and end plate III 13 respectively, fix end plate I8 in middle girder steel 2 edge of a wing middle part through vertical bolt I15. And circular bolt holes and long circular holes II are respectively formed in the positions, corresponding to the support connecting plate 4, of the end plate III 13, the circle centers of the circular bolt holes and the long circular holes II are positioned on the same vertical line, and the end plate III 13 is connected with the support connecting plate 4 through a vertical bolt II 16. Specifically, the end plates II 12 and III 13 are connected with the lower flange of the middle steel beam 2 and the support connecting plate 4 through round bolt holes on the inner side and the outer side of the energy consumption section 3, so that the energy consumption section 3 is prevented from being partially tilted when sliding and deforming.
The working principle is as follows: when the novel combined device is used, whether the combined device has the condition that a component is damaged or the connection is not firm is checked, and the novel combined device is used after the check is correct. Firstly, the end beam 1 is transversely stiffened
The rib I6, the longitudinal stiffening rib 7, the end plate I8 and the two shear resisting plates 9 are welded into a beam section; then, a web plate of the middle steel beam 2 extends between the two shear resistant plates 9, a butyl rubber gasket 17 is arranged between the two shear resistant plates, the beam sections are connected with the middle steel beam 2 through horizontal bolts 14, and the middle steel beam 2 is tightly attached to an end plate I8; and finally, one end of a prestressed steel strand 5 is fixed on the transverse stiffening rib I6 of the end beam 1 at one side, initial prestress is applied to the prestressed steel strand 5 at the other end, and the prestressed steel strand 5 is fixed on the end beam 1 at the other side after the prestress is applied. The energy dissipation section 3, the end plate II 12 and the end plate III 13 are welded to form a complete energy dissipation section, and the energy dissipation sections are fixed on the complete steel beam and the support connecting plate 4 through a vertical bolt I15 and a vertical bolt II 16 respectively. Under the action of a common earthquake and a fortification earthquake, an opening is formed at the sliding connection part, the prestressed steel strand is stretched, the energy consumption section slides and rubs to consume energy, and after the earthquake, the sliding connection and the energy consumption section are restored to the initial positions under the action of the restoring force of the prestressed steel strand, so that the self-resetting of the structure is realized; under the action of a larger earthquake, the sliding connection forms a larger opening, the prestressed steel strand is stretched for a longer time, the energy consumption section consumes energy through a sliding friction and plastic deformation dual mechanism, and the sliding connection and the energy consumption section recover to the initial position under the action of the restoring force of the larger prestressed steel strand after the earthquake, so that the self-resetting of the structure is realized. The prestressed steel strand applying the initial prestress can provide larger rotation rigidity and restoring force for sliding connection, the butyl rubber gasket with ultralow friction coefficient can effectively improve the function restoring capability of the combined device after the earthquake, and the replaceable reaming bolt connection type energy consumption section is arranged to improve the ductility of the combined device. By the means, the novel combined device has the advantages of good anti-seismic performance, self-resetting structure, high ductility, strong energy consumption, efficient assembly and the like, and the working principle of the novel combined device with the prestressed steel strand, the sliding connection and the energy consumption section is adopted.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a novel composite set of prestressing force steel strand-slip connection-power consumption section which characterized in that: the energy-saving steel beam comprises end beams (1) on two sides, a middle steel beam (2), an energy consumption section (3), a supporting connecting plate (4) and prestressed steel strands (5); an end plate I (8) is welded on one side of the end beam (1), two shear resisting plates (9) are welded on the end plate I (8), transverse stiffening ribs I (6) are welded on webs on two sides of the end beam (1), and longitudinal stiffening ribs (7) are arranged between the transverse stiffening ribs I (6) and the end plate I (8); the middle steel beam (2) is provided with oblong holes I on web plates on two sides, the middle part of the web plate is provided with a transverse stiffening rib II (11), and upper and lower flanges on two sides are provided with reinforcing plates (10); an end plate II (12) and an end plate III (13) are respectively arranged at two ends of the energy consumption section (3), and the end plate II (12) is connected with the middle steel beam (2) through a vertical bolt I (15); the support connecting plate (4) is provided with a long round hole II and is connected with an end plate III (13) through a vertical bolt II (16); the prestressed steel strands (5) are anchored on transverse stiffening ribs I (6) of the end beams I (1) on the two sides.
2. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: round bolt holes are formed in the shear resistant plate (9), the positions of the round bolt holes correspond to the positions of the long round holes I one by one, the horizontal bolts (14) penetrate through webs of the shear resistant plate (9) and the middle steel beam (2) to connect the end beams (1) on the two sides with the middle steel beam (2), and a butyl rubber gasket (17) is arranged between the web of the shear resistant plate (9) and the middle steel beam (2).
3. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: the transverse stiffening rib II (11) and the flange of the energy dissipation section (3) are positioned on the same vertical line, and the end plate II (12) and the end plate III (13) are provided with preset circular bolt holes and connected with the middle steel beam (2) and the support connecting plate (4) through high-strength bolts.
4. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: and the circle centers of the long round holes II on the supporting connecting plate (4) and the circle centers of the round bolt holes on the end plate III (13) are positioned on the same vertical line, and the size of the long edge of each long round hole II meets the expected earthquake-resistant design requirement.
5. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: horizontal stiffening rib I (6), end plate I (8), horizontal stiffening rib II (11) should reserve the round hole for prestressing steel strand wires (5), and its round hole diameter is not less than the diameter of prestressing steel strand wires (5), and reserves its centre of a circle of round hole and be in same water flat line.
6. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 2, wherein: the trompil size of the long round hole I on middle girder steel (2) web should satisfy the rotation requirement between end beam (1) and middle girder steel (2).
7. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: the height of the end plate I (8) is slightly larger than the beam height of the end beam (1); the beam height of the middle steel beam (2) and the thickness of the two reinforcing plates (10) are equal to the beam height of the end beam (1).
8. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: the length of the end beam (1) is required to be as small as possible under the condition that the anchoring requirement of the prestressed steel strand (5) is met.
9. The novel combination device of prestressed steel strand-slip connection-energy dissipation section as claimed in claim 3, wherein: the end plates II (12) and III (13) are connected with the lower flange of the middle steel beam (2) and the supporting and connecting plate (4) through round bolt holes on the inner side and the outer side of the energy consumption section (3), and the energy consumption section (3) is guaranteed not to be partially tilted when sliding and deforming.
10. The novel combination device of prestressed steel strand-sliding connection-energy dissipation section as claimed in claim 1, wherein: the shear resisting plate (9) is arranged on the web of the middle steel beam (2) in the middle, the width of the shear resisting plate (9) is smaller than the height of the web of the middle steel beam (2), and the rotation requirements of the end beam (1) and the middle steel beam (2) are met.
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| CN107190874A (en) * | 2017-05-03 | 2017-09-22 | 南昌大学 | A kind of replaceable reaming bolt connecting-type energy dissipating beam section and its construction method being used in Y shape eccentrically braces structure |
| CN113445799A (en) * | 2021-06-17 | 2021-09-28 | 北京建筑大学 | Core column type double-flange self-resetting beam column connecting node structure |
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