CN117605186A - Vibration reduction subframe containing partially-encased concrete combined column-combined assembled energy dissipation beam - Google Patents

Vibration reduction subframe containing partially-encased concrete combined column-combined assembled energy dissipation beam Download PDF

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Publication number
CN117605186A
CN117605186A CN202311538901.1A CN202311538901A CN117605186A CN 117605186 A CN117605186 A CN 117605186A CN 202311538901 A CN202311538901 A CN 202311538901A CN 117605186 A CN117605186 A CN 117605186A
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China
Prior art keywords
column
flange
energy consumption
steel
concrete
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CN202311538901.1A
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Chinese (zh)
Inventor
曹青
何浩祥
李荣鑫
周大兴
丁建为
李宏远
赵海龙
程扬
高晓建
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Beijing University of Technology
China Railway Construction Group Co Ltd
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Beijing University of Technology
China Railway Construction Group Co Ltd
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Application filed by Beijing University of Technology, China Railway Construction Group Co Ltd filed Critical Beijing University of Technology
Priority to CN202311538901.1A priority Critical patent/CN117605186A/en
Publication of CN117605186A publication Critical patent/CN117605186A/en
Pending legal-status Critical Current

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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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
    • 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
    • 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
    • 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
    • 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
    • E04H9/025—Structures with concrete columns

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention discloses a vibration reduction subframe containing a part of outsourced concrete combined column-combined energy consumption beam, belonging to the technical field of structural engineering vibration resistance and vibration reduction; compared with steel columns such as H steel, square steel pipes and the like, the part of the partially-encased concrete composite column formed by filling concrete has higher rigidity and bearing capacity, and the upper column end and the lower column end of the part of the partially-encased concrete composite column are stuck with high-performance reinforced fiber cloth for local reinforcement, so that the bearing capacity of column nodes is higher, and the anti-seismic design requirements of 'strong column weak beams and strong node weak members' are met; the combined assembly type energy consumption beam comprises an end beam, an I-shaped energy consumption beam and a middle beam, wherein the upper flange and the lower flange of the energy consumption beam are provided with flange connecting plates, the flange is in an I shape, the flange adopts a dog-bone structure, the web plate adopts a round or diamond hole form, the energy consumption beam fully absorbs earthquake energy under the action of an earthquake, only the energy consumption beam section is guaranteed to be subjected to yielding damage when the earthquake occurs, other beam sections are kept intact, and only the damaged energy consumption beam needs to be replaced during repair.

Description

Vibration reduction subframe containing partially-encased concrete combined column-combined assembled energy dissipation beam
Technical Field
The invention relates to the technical field of structural engineering earthquake resistance and vibration reduction, in particular to a vibration reduction subframe containing a part of outsourcing concrete combined column-combined assembly type energy consumption beam.
Background
At present, the reinforced concrete side-force-resistant wall body applied to a building structure is over concentrated in wall damage distribution under the action of earthquake, the ductility of concrete serving as one of energy consumption main bodies is limited, and only a small part of internal section steel or reinforcing steel participates in energy consumption, so that the whole ductility and energy consumption effect of the wall body are not ideal. The steel plate side force resisting wall is characterized in that a stiffening rib is welded or surface constraints are additionally arranged on two sides of the steel plate for controlling the buckling of the steel plate, so that the cost of the wall is high, and the engineering popularization is limited.
Disclosure of Invention
The invention provides a vibration-damping subframe containing a part of outsourcing concrete combined column-combined assembly type energy-consuming beam, which is convenient for maintenance and replacement of the vibration-damping subframe after vibration, and reduces the replacement amount of energy-consuming beam sections to the greatest extent, and the energy-consuming beam sections can enter deformation and reach a yield stage at first when in vibration by adopting a dog-bone structure on the flange of the energy-consuming beam, adopting a round or diamond-shaped hole form on the web, and adopting low yield point steel for the whole energy-consuming beam section, and other beam sections are kept intact and improve the integral vibration-resisting performance of the node, so that a beam-end plastic hinge is formed for energy-consuming vibration damping; the vibration reduction subframe is easy to construct, install and maintain and low in cost, and only the damaged energy consumption beam needs to be replaced during post-earthquake repair.
In order to achieve the above purpose, the invention provides an energy consumption beam, which comprises an upper flange, a lower flange and a connecting web arranged between the upper flange and the lower flange, wherein the upper flange and the lower flange are symmetrically provided with notches with respect to the connecting web, and the length extension direction of the notches is parallel to the longitudinal directions of the upper flange and the lower flange; the curve shape of the notch is a symmetrical quadratic parabola, so that a dog-bone structure is formed.
Preferably, the length a of the notch is 3/4 of the height h of the energy dissipation beam, and the maximum width b of the notch is 1/4 of the width w of the energy dissipation beam.
Preferably, a circular hole or a diamond hole is formed in the connecting web plate, and the diameter D of the circular hole is 1/4-1/3 of the height h of the energy dissipation beam.
Preferably, the center line of the circular or diamond-shaped hole is in the same plane as the center line of the notch.
The invention also provides a vibration reduction subframe containing a part of the outsourcing concrete combined column-combined energy consumption beam, which comprises a part of the outsourcing concrete combined column and the combined energy consumption beam which are arranged in the outer wall plate, wherein the combined energy consumption beam comprises an end beam, the energy consumption beam and a middle beam which are assembled and connected in sequence, and the end beam is fixedly connected with the PEC combined column; the upper flange and the lower flange of the energy consumption beam are respectively provided with a flange connecting plate, and the flange connecting plates are connected with flange cover-free plates of the end beam and the middle beam; the connecting webs of the energy consumption beams are connected with the webs of the end beams and the middle beams through web connecting plates.
Preferably, the partially-encased concrete composite column comprises H steel, a through long longitudinal bar, a stirrup sleeve, end plates and a shear member, wherein the through long longitudinal bar is placed in the H steel, the stirrup sleeves used for fixing the through long longitudinal bar are arranged at intervals in the whole height range of the two sides of a web plate of the H steel, and the stirrup sleeves are fixedly connected with the web plate of the H steel; square end plates are welded at the upper end and the lower end of the H steel, and a plurality of shearing resistant pieces are arranged on the inner sides of the end plates; the inside of the part of the outsourcing concrete combined column is filled with concrete with the strength grade of the concrete not less than C30, the two ends of the part of the outsourcing concrete combined column are adhered with high-performance carbon fiber composite materials, and the adhering length L of the high-performance carbon fiber composite materials is 1/3-1/2 of the height H of the energy consumption Liang Zhizhu end.
Preferably, the end plate thickness is greater than the flange thickness of the H steel.
Preferably, stirrup penetrating holes are reserved in the whole height range of the web plate of the H steel at intervals of 100-200 mm, and the perforated U-shaped stirrups penetrate through the stirrup penetrating holes and are connected with the short limb U-shaped stirrups to form a stirrup sleeve.
Preferably, column foot stiffening ribs are arranged at the joint of the end plates and the flanges of the H steel; a column flange stiffening plate is arranged in the H steel, and the arrangement height of the column flange stiffening plate is the same as that of the upper flange and the lower flange of the end beam; and longitudinal rib penetrating holes for the through long longitudinal ribs to penetrate are reserved on the column flange stiffening plates.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a vibration reduction subframe containing a part of outsourcing concrete combined column-combined assembled energy consumption beam, which is a novel assembled wall body applied to various frame structures and large-span structures and aims to improve side rigidity and energy consumption resistance of the structure so as to improve the earthquake resistance of the structure. The wall body is connected with a frame beam in the structure by means of high-strength bolts, and is a structural member assembled in a full-dry mode. The wall body has small steel consumption and flexible and simple structure, and can adjust the wall body performance parameters by changing the structures, the number and the like of the combined assembled energy consumption beam and the partially encased concrete combined column so as to adapt to engineering requirements. In addition, the wall is easy to construct, install and replace after earthquake, can greatly improve the construction speed, quickly recover the anti-seismic toughness of the structure, and has good application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a three-dimensional side view of a vibration damping subframe;
FIG. 2 is a split view of a single span vibration damping subframe (left side column without concrete);
FIG. 3 is a lower cross-sectional view of the vibration damping subframe taken along section line 1 A-A;
FIG. 4 is a lower cross-sectional view of the vibration damping subframe taken along section lines B-B of FIG. 1;
FIG. 5 is a schematic view of a partial disassembly of a steel skeleton of a partially encased concrete composite column;
fig. 6 is a side view of the energy consumption Liang Sanwei;
in the figure: 1. the concrete composite column is partially wrapped, wherein the concrete composite column comprises 2 parts of end beams, 3 parts of energy consumption beams, 4 parts of middle beams, 5 parts of web connecting plates, 6 parts of high-strength bolts, 7 parts of high-performance carbon fiber composite materials, 101 parts of H steel, 102 parts of filling concrete, 103 parts of column flange stiffening plates, 104 parts of end plates, 105 parts of column foot stiffening ribs, 106 parts of stirrup penetrating holes, 107 parts of shearing resistant parts, 108 parts of mounting holes, 109 parts of longitudinal stirrups, 110 parts of perforated U-shaped stirrups, 111 parts of short-limb U-shaped stirrups, 112 parts of longitudinal stirrup penetrating holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 6, the present embodiment provides a vibration damping subframe including a partially-encased concrete composite column-composite assembled energy dissipating beam, the vibration damping subframe being composed of a partially-encased concrete composite column 1, an end beam 2, an energy dissipating beam 3, a center beam 4, a web connection plate 5, a high-strength bolt 6, a high-performance carbon fiber composite 7, H steel 101, filled concrete 102, column flange stiffening plates 103, end plates 104, column foot stiffening ribs 105, stirrup penetrating holes 106, shear members 107, mounting holes 108, longitudinal ribs 109, perforated U-shaped stirrups 110, short-limb U-shaped stirrups 111, longitudinal rib penetrating holes 112. The vibration damping sub-frame is assembled by a part of outer-covered concrete combined column and a 5-section combined assembled energy consumption beam, has smaller steel consumption and flexible and simple structure, and can adjust the wall performance parameters by changing the structures, the number and the like of the combined assembled energy consumption beam and the part of outer-covered concrete combined column 1 so as to adapt to engineering requirements. The 5-section combined assembled energy consumption beam mainly comprises a 2-section end beam 2, a 2-section energy consumption beam 3 and a 1-section middle beam 4; the part of the outsourcing concrete combined column 1 is welded with the end beam 2, the welding work is completed in a factory, and the end beam 2 and the part of the outsourcing concrete combined column 1 are integrated when transported to the site; the upper flange and the lower flange of the energy consumption beam 3 are provided with flange connecting plates, so that cover plate-free connection with the upper flange and the lower flange of the end beam 2 and the middle beam 4 is realized, the installation quantity of field movable connecting plates is reduced, the efficiency is higher, the web plates are connected by adopting web plate connecting plates 5, the field organization is convenient, and the full field assembly of the vibration reduction device frame is realized. The flange of the energy consumption beam 3 adopts a dog bone structure, the web plate adopts a round or diamond hole-forming mode, the whole section of the energy consumption beam 3 can adopt low yield point steel, such as building steel with the yield point not higher than 160MPa, the energy consumption beam 3 can fully absorb earthquake energy under the action of earthquake, so that only the energy consumption beam 3 section is ensured to be subjected to yield failure when the earthquake happens, other beam sections are kept intact, and only the damaged energy consumption beam 3 needs to be replaced during repair.
Further, the partially-encased concrete combined column 1 is provided with at least 4 longitudinal through-length reinforcements 109 within the range of the filled concrete 102, and simultaneously stirrup penetrating holes 106 are reserved at intervals of 100 mm-200 mm within the full height range of the H steel 101 web plate, and a large stirrup sleeve is formed by welding a perforated U-shaped stirrup 110 and a short-limb U-shaped stirrup 111; square end plates 104 are welded at the upper end and the lower end of the H steel 101, the thickness of the end plates 104 is larger than that of an H steel flange, 4 shear-resistant pieces 107 are prepared at the inner side of the end plates 104, the shear-resistant pieces 107 can be welded steel studs, the studs are uniformly and symmetrically arranged at two sides of a web plate, 2 column foot stiffening ribs 105 are respectively welded at the outer side surfaces of the joint of the end plates 104 and the flange of the H steel 101, and the strength of a joint of the end plates and the H steel 101 is improved; the H steel 101 can be hot rolled H-shaped steel or welded H-shaped section steel, the yield strength of the steel is not less than 345MPa, and Q345 grade steel is selected. Under the combined action of the through long longitudinal ribs 109, the shearing resistant parts 107 and the large stirrup sleeves, the whole prefabrication work of the part of the outsourcing concrete combination column 1 with better integrity and stronger cooperative stress performance is completed by a factory.
Further, a reinforcing measure is adopted at the joint of the partially-encased concrete composite column 1 and the end beam 2, a column flange stiffening plate 103 is added in H steel 101 for reinforcing, the column flange stiffening plate 103 and the upper flange and the lower flange of the end beam 2 are at the same height, the thickness is preferably 2mm larger than the thickness of the flange of the end beam 2, the width exceeds the width of the flange of the end beam 2, a longitudinal rib penetrating hole 112 is reserved at the column flange stiffening plate 103, the longitudinal rib 109 is ensured to penetrate from top to bottom, and the cooperative stress of the column flange stiffening plate 103 and the filled concrete 102 is enhanced. The reinforcement measures enable the stress of the beam column joint area to be more reasonable, avoid stress concentration, and effectively avoid the early damage of the joint area caused by repeated pulling and pressing of the flange of the H-steel 101 under the action of an earthquake, so that the integrity is better.
Further, the upper flange and the lower flange of the energy consumption beam 3 are provided with flange connecting plates and are in an I shape, the upper flange and the lower flange are respectively and symmetrically cut with the web plate along the longitudinal direction of the beam, the curve shape of a flange cutting part at any side is ensured to be a symmetrical quadratic parabola, a dog-bone structure is formed, the cutting length a of a flange cutting part at one side is preferably 3/4 of the height h of a steel beam, and the cutting maximum width b is preferably 1/4 of the width w of the steel beam; along the direction perpendicular to the longitudinal direction of the steel beam, the central line of the web circular or diamond-shaped hole part and the central line of the flange dog-bone part should be consistent or in the same plane, the diameter D of the web circular hole is not preferably 1/4-1/3 of the height h of the steel beam, and the area of the diamond-shaped hole is not preferably more than that of the circular hole under the same condition.
Further, the filling concrete 102 in the partially-encased concrete composite column 1 can be ordinary concrete, the strength grade of the concrete is not suitable to be smaller than C30, the rigidity of the upper column end and the lower column end of the partially-encased concrete composite column 1 is enhanced, local buckling damage of the column ends under the action of an earthquake is avoided, the high-performance carbon fiber composite material 7 is adhered to the upper column end and the lower column end, and the adhering length L of the single-side column end is 1/3-1/2 of the height H of the energy consumption Liang Zhizhu end. The high-performance carbon fiber composite material 7 is mainly formed by converting organic fibers through special heat treatment, inorganic high-performance fibers with carbon content higher than 90 percent have tensile strength of more than 3500Mpa, tensile elastic modulus of 23000-43000 Mpa, higher impact strength and bending strength, low electrochemical activity, good corrosion resistance, effectively prolonged service life, high and low temperature resistance, small thermal expansion coefficient, energy absorption and vibration resistance and the like.
Further, the web connecting plate 5 can be a single-sided connecting plate or a double-sided connecting plate, when the single-sided connecting plate is adopted, the thickness of the web connecting plate 5 is at least 2mm larger than the smaller value of the web connecting plates connected to two sides, when the double-sided connecting plate is adopted, the thickness of the web connecting plate 5 is at least 2mm larger than half of the smaller value of the web connecting plates connected to two sides, the web connecting plate 5 is prevented from yielding damage under the action of an earthquake, and the web connecting plate 5 can be removed smoothly when the energy-dissipating beam sections are repaired and replaced conveniently in the later period.
Further, the whole span direction of the vibration reduction subframe is symmetrically arranged along the central axis vertical to the span direction, and the single span inner part is externally covered with the concrete combined column 1 and the assembled energy consumption beam combined by the end beam 2, the energy consumption beam 3 and the middle beam 4 are symmetrically arranged along the span central axis vertical to the span direction; the height-direction vibration damping device frames are symmetrically arranged along the central axis parallel to the span, and the upper layer beams and the lower layer Liang Juzhu are equal in end-to-end spacing.
Further, the upper end plate 104 and the lower end plate 104 of the partially-encased concrete combined column 1 are reserved with mounting holes 108 in advance along the periphery, the mounting holes 108 are uniformly and symmetrically distributed, a new structure is pre-embedded with high-strength screws or pre-embedded steel plates in advance during construction, the partially-encased concrete combined column 1 is fixed with a main body structure in a bolting or welding mode, and when the existing building is reinforced and reformed, the chemical anchor bolts and the main body existing structural beams are anchored through the reserved mounting holes 108.
Taking a piece of vibration damper frame as an example, the subframe takes two cross 2 layers, and assembly components at all parts are assembled as follows:
the prefabrication work of the partially-encased concrete composite column 1 is directly completed by a factory, and when filling concrete 102 is poured, a single-side horizontal pouring mode is recommended, so that the filling concrete 102, end plates 104, column flange stiffening plates 103 and other parts are filled compactly, and the phenomenon of hollowness is prevented. The work of pasting the high-performance carbon fiber composite material 7 on the upper and lower column ends is finished in advance in a factory, and protection work is finished. The part of the outsourcing concrete combination column 1 and the end beam 2 are connected by welding, the welding work is completed in a factory, and the end beam 2 and the part of the outsourcing concrete combination column 1 are integrated when the welding work is transported to the site.
Firstly, determining the layout position of the vibration damper frame according to the vibration-resistant requirement, completing pre-embedding reservation work in advance, pre-embedding mounting bolts or pre-embedding connecting steel plates in advance for a newly built building, and pre-sinking expansion bolt hole sites for existing buildings according to the mounting points.
And secondly, the mounting part is covered with the concrete composite column 1, the newly-built building is fixed with the main body structural beam in a high-strength bolt connection or welding mode, and when the existing building is reinforced and reformed, a chemical anchor bolt can be adopted to anchor the main body existing structural beam. And (3) installing the partially-encased concrete combined columns 1 one by one from one side in sequence.
And thirdly, installing the energy consumption beam 3, after the two side parts are partially covered with the concrete combination column 1 and the end beam 2, directly inserting the energy consumption beam 3 from one side surface of the end beam 2 in a plane through small hoisting equipment or manually, respectively fixing the upper flange and the lower flange of the end beam 2 and the energy consumption beam 3 by using high-strength bolts 6, fixing the web connecting plate 5 and the webs of the end beam 2 and the energy consumption beam 3 by using the high-strength bolts 6, and sequentially installing the energy consumption beam 3 from bottom to top and from left to right, wherein the lower layer is installed and then the upper layer is installed for convenient hoisting.
And fourthly, installing the middle beam 4, after the energy consumption beams 3 on the two sides are installed, transversely embedding the middle beam 4 from outside a plane through small hoisting equipment or manually, respectively fixing the upper flange and the lower flange of the middle beam 4 and the energy consumption beams 3 by using high-strength bolts 6, and fixing web connecting plates 5, the middle beam 4 and webs of the energy consumption beams 3 by using the high-strength bolts 6, wherein the lower layer is installed and then the upper layer is installed for convenient hoisting.
Finally, the anti-corrosion and anti-rust work is finished, the installation work of the vibration damper frame is finished, and the anti-corrosion and anti-rust work such as anti-rust paint brushing and the like is finished according to the design requirement.
After earthquake, only the energy-consumption beam 3 with yield damage is removed and replaced according to the damage condition;
compared with the prior art, the invention has the advantages that:
the wall body has simple structure and small steel consumption, and can adjust the performance parameters of the wall body by changing the structure, the number and the like of the combined assembled energy consumption beam and the partially encased concrete combined column so as to adapt to engineering requirements, so that the wall body is flexible in arrangement and high in applicability.
The energy-consumption steel beam adopts a 5-section type, wherein the flange of the energy-consumption beam adopts a dog-bone structure, the web plate adopts a round or diamond-shaped hole forming mode, the whole energy-consumption beam section can adopt low yield point steel, when an earthquake happens, the energy-consumption beam section firstly enters into deformation and reaches a yield stage, a plastic hinge is formed, the energy-consumption beam section enters into a hysteresis energy-consumption stage, the energy-consumption beam section has good ductility, and other beam sections remain intact.
The end beam and part of the outsourcing concrete composite column are welded in advance, and the column flange stiffening plates and the H-steel web plate play a role in reinforcing the part of the end beam, so that the part is stable, the H-steel flange is prevented from being pulled to be partially separated from the concrete under the earthquake action, and the stress is more reasonable.
Compared with a steel tube concrete column, the vibration reduction subframe fully utilizes the characteristic of stronger rigidity in the plane of the partially-encased concrete combined column, has more reasonable stress and more full material utilization.
By sticking the high-performance carbon fiber composite material on the upper and lower column ends, the rigidity of the column ends of the combined column is enhanced, local buckling damage of the column ends under the action of an earthquake is avoided, and the service life and the reuse rate of the vibration damping subframe are improved.
The vibration damping subframe is constructed by adopting full-dry assembly, has simple structure and high standardization level, is convenient to construct, install and maintain and has good vibration damping effect.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.

Claims (9)

1. The energy consumption beam is characterized by comprising an upper flange, a lower flange and a connecting web plate arranged between the upper flange and the lower flange, wherein gaps are formed on the upper flange and the lower flange symmetrically to the connecting web plate, and the length extension direction of the gaps is parallel to the longitudinal directions of the upper flange and the lower flange; the curve shape of the notch is a symmetrical quadratic parabola, so that a dog-bone structure is formed.
2. The energy dissipating beam of claim 1, wherein: the length a of the notch is 3/4 of the height h of the energy dissipation beam, and the maximum width b of the notch is 1/4 of the width w of the energy dissipation beam.
3. The energy consuming beam of claim 1 or 2, wherein: the connecting web plate is provided with a circular hole or a diamond hole, and the diameter D of the circular hole is 1/4-1/3 of the height h of the energy dissipation beam.
4. A beam according to claim 3, characterized in that: the center line of the round hole or the diamond hole is in the same plane with the center line of the notch.
5. A vibration damping subframe comprising a part of an outsourcing concrete combination column-combination energy consumption beam, which is characterized by comprising a part of an outsourcing concrete combination column arranged inside an outer wall plate and a combination energy consumption beam, wherein the combination energy consumption beam comprises an end beam, the energy consumption beam and a middle beam which are assembled and connected in sequence, and the end beam is fixedly connected with the PEC combination column; the upper flange and the lower flange of the energy consumption beam are respectively provided with a flange connecting plate, and the flange connecting plates are connected with flange cover-free plates of the end beam and the middle beam; the connecting webs of the energy consumption beams are connected with the webs of the end beams and the middle beams through web connecting plates.
6. The vibration-damping subframe with partially encased concrete composite post-composite energy-dissipating beam of claim 5, wherein: the part of the outsourcing concrete combination column comprises H steel, a through long longitudinal bar, a stirrup sleeve, an end plate and a shearing resistant piece, wherein the through long longitudinal bar is placed in the H steel, the stirrup sleeves used for fixing the through long longitudinal bar are arranged at intervals in the whole height range of the two sides of a web plate of the H steel, and the stirrup sleeves are fixedly connected with the web plate of the H steel; square end plates are welded at the upper end and the lower end of the H steel, and a plurality of shearing resistant pieces are arranged on the inner sides of the end plates; the inside of the part of the outsourcing concrete combined column is filled with concrete with the strength grade of the concrete not less than C30, the two ends of the part of the outsourcing concrete combined column are adhered with high-performance carbon fiber composite materials, and the adhering length L of the high-performance carbon fiber composite materials is 1/3-1/2 of the height H of the energy consumption Liang Zhizhu end.
7. The vibration-damping subframe with partially encased concrete composite post-composite energy-dissipating beam of claim 6, wherein: the thickness of the end plate is larger than that of the flange of the H steel.
8. The vibration-damping subframe with partially encased concrete composite post-composite energy-dissipating beam of claim 6, wherein: the web of the H steel is reserved with stirrup penetrating holes at intervals of 100-200 mm in the whole height range, and the perforated U-shaped stirrups penetrate through the stirrup penetrating holes and are connected with the short limb U-shaped stirrups to form a stirrup sleeve.
9. The vibration-damping subframe with partially encased concrete composite post-composite energy-dissipating beam of claim 6, wherein: column foot stiffening ribs are arranged at the joint of the end plates and the flanges of the H steel; a column flange stiffening plate is arranged in the H steel, and the arrangement height of the column flange stiffening plate is the same as that of the upper flange and the lower flange of the end beam; and longitudinal rib penetrating holes for the through long longitudinal ribs to penetrate are reserved on the column flange stiffening plates.
CN202311538901.1A 2023-11-17 2023-11-17 Vibration reduction subframe containing partially-encased concrete combined column-combined assembled energy dissipation beam Pending CN117605186A (en)

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