CN109594671B - Energy dissipation and shock absorption system of T-shaped lever mechanism cantilever truss - Google Patents
Energy dissipation and shock absorption system of T-shaped lever mechanism cantilever truss Download PDFInfo
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- CN109594671B CN109594671B CN201811549989.6A CN201811549989A CN109594671B CN 109594671 B CN109594671 B CN 109594671B CN 201811549989 A CN201811549989 A CN 201811549989A CN 109594671 B CN109594671 B CN 109594671B
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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
- 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
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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
- E04H9/14—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 against other dangerous influences, e.g. tornadoes, floods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses an energy dissipation and shock absorption system of a T-shaped lever mechanism cantilever truss, which comprises a cantilever truss arranged between a core tube and a frame column, wherein the end part of the cantilever truss is connected with a shock absorption mechanism hinged by a T-shaped lever and a damper; one end of the T-shaped lever is hinged with the outer end of the cantilever truss, and the other end of the T-shaped lever is hinged with the frame column; the lower end of the T-shaped lever is hinged with the damper, and the extending end of the damper is hinged with the outer end of the cantilever truss. The energy consumption efficiency of the damper is improved by realizing the amplification effect of the cantilever lever by meeting the relation between the connection length and the connection height of the T-shaped lever and the damper and the extension length of the upper chord member of the cantilever truss from the core tube. The displacement amplification coefficient of the invention can reach about 10.0, and the system has good damping effect and high working efficiency.
Description
Technical Field
The invention relates to the field of civil structure engineering, in particular to an energy dissipation and shock absorption system of a T-shaped lever mechanism cantilever truss.
Background
With the development of social economy and the acceleration of urban process in China, the development of super high-rise buildings is rapid. Under the action of earthquake and wind load, the energy consumed by the building is limited, and currently, energy dissipation and shock absorption technology is generally adopted to dissipate or absorb the energy in the earthquake input structure. The damper is gradually applied to super high-rise building design because of being capable of effectively improving the anti-seismic performance and economy of the structure. However, the arrangement mode of the damper has a great influence on the working efficiency, and the working efficiency of the damper is judged by using a displacement amplification factor f, and the conventional damper arrangement mode mainly comprises a diagonal support (see fig. 1), a lasso arrangement mechanism (see fig. 2), vertical arrangement of the ends of the cantilever truss (see fig. 3) and a herringbone support mechanism, wherein the diagonal support and the herringbone support play a role of the damper by utilizing the shearing deformation between structural layers. The displacement amplification factor f of the diagonal mechanism and the herringbone supporting mechanism is smaller than 1, the amplification factor is too small, and the damping effect is poor. A relatively large number of dampers need to be arranged in order to achieve a relatively ideal damping effect. And thus, the engineering cost is increased, and the method is not economical. The damper is vertically arranged at the end part of the cantilever truss in the reinforcing layer, the function of the damper is exerted by utilizing structural bending deformation, the energy consumption efficiency of the damper can be improved by the amplification function of the cantilever lever, and the displacement amplification factor f of the damper is positively related to the cantilever length and the cantilever truss height.
The super high-rise building frame-core tube structure system is generally provided with a cantilever truss on a building equipment layer (or a refuge layer) to form a rigid reinforcing layer, so that the overall side rigidity and anti-overturning capability of the structure are enhanced. However, after the arrangement, the whole rigidity of the structure is increased, so that the period is shortened, the earthquake effect is increased, meanwhile, the internal force of the core tube is suddenly changed, a weak layer is formed, the core tube is seriously damaged, and the later repair difficulty is high. In order to solve the problem of earthquake-resistant design of the structure, the existing cantilever truss needs to be improved.
Disclosure of Invention
In order to solve the above-mentioned defects existing in the prior art, an object of the present invention is to provide an energy dissipation and shock absorption system for a cantilever truss of a T-shaped lever mechanism, wherein a damper is arranged in a conventional rigid cantilever truss to form a cantilever truss (also called a flexible reinforcing layer) with a damper; the T-shaped deformation amplifying arrangement device for amplifying the energy consumption effect of the damper is provided; the energy dissipation and shock absorption system of the cantilever truss of the T-shaped lever mechanism is finally provided by combining the two, the arrangement mechanism creatively moves the interlayer side of the structure to the two ends of the damper to effectively amplify, the energy consumption efficiency of the damper is fully exerted, the additional damping ratio of the structure under the wind load and earthquake action is improved, and the shock absorption effect is better. In order to ensure the safety of the T-shaped lever in rare earthquakes and ensure the function of the damper, the invention adopts related construction measures to prevent the device from destabilizing out of plane under the action of rare earthquakes.
The invention is realized by the following technical scheme.
The energy dissipation and shock absorption system of the cantilever truss of the T-shaped lever mechanism comprises a cantilever truss arranged between a core tube and a frame column, wherein the end part of the cantilever truss is connected with a shock absorption mechanism hinged by a T-shaped lever and a damper; one end of the T-shaped lever is hinged with the outer end of the cantilever truss, and the other end of the T-shaped lever is hinged with the frame column; the lower end of the T-shaped lever is hinged with a damper, and the extension end of the damper is hinged at the outer end of the cantilever truss;
the length L of the damper, the length R1 of the T-shaped lever cross rod, the length L2 of the upper chord of the boom truss extending from the core barrel and the length L3 of the lower chord of the boom truss extending from the core barrel are as follows:
L＝0.5R1+L2-L3
the displacement amplification factor f of the damping mechanism, the boom truss height L1, the extension length L2 of the boom truss upper chord member from the core tube, the length R1 of the T-shaped lever cross rod and the length R2 of the T-shaped lever vertical rod satisfy the following conditions:
f＝L2·R2/L1·R1。
for the above technical solution, the present invention is further preferred:
preferably, the cantilever truss comprises an upper chord member, a lower chord member and a diagonal web member, wherein the diagonal web member is diagonally and cross-connected between the upper chord member and the lower chord member; one end of the cantilever truss is connected with the core tube, and the cross connection part of the inclined web member 11 at the other end and the upper chord member is connected with the end plate.
Preferably, the T-shaped lever comprises a T-shaped lever cross rod and a T-shaped lever vertical rod, and two ends of the T-shaped lever cross rod are respectively connected with the frame column and the cross connection part of the inclined web member and the upper chord member through lug plates; the lower end of the T-shaped lever vertical rod is hinged with the damper through an ear plate.
Preferably, the ear plates comprise a first ear plate and a second ear plate which are hinged with two ends of the T-shaped lever cross rod, and a third ear plate which is hinged with the damper; the other end of the first lug plate hinged with the T-shaped lever cross rod is connected with a node plate arranged on the frame column; the other end of the second lug plate hinged with the T-shaped lever cross rod is connected with the end plate; the other end of the third lug plate hinged with the damper is connected with the outer end part of the lower chord member of the cantilever truss.
Preferably, the end plate is connected with the second ear plate by welding or bolts; the second lug plate is hinged with the T-shaped lever cross rod through a rotating shaft; the other end of the end plate is connected with the intersection of the inclined web member at the outer end of the cantilever truss and the upper chord member through welding.
Preferably, the front side and the rear side of the T-shaped lever vertical rod are symmetrically connected with an anti-instability plate, the anti-instability plate is not connected with the middle part of the T-shaped lever vertical rod, and the upper end and the lower end of the anti-instability plate are respectively connected with the T-shaped lever vertical rod.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1) The invention arranges the damper in the traditional rigid cantilever truss to form the cantilever truss (also called as a flexible reinforcing layer) with the damper, thereby solving the problem of unfavorable anti-seismic design brought by the rigid reinforcing layer, fully playing the energy dissipation and shock absorption effects of the damper and simultaneously playing the advantages of the cantilever truss.
2) In super high-rise buildings, under the action of earthquake and wind load, when the inner core tube is bent and deformed, the structure generates interlayer displacement to drive the outer end part of the cantilever truss to move up and down to generate vertical deformation, and the vertical deformation amplifies the displacement to two ends of the damper again through the T-shaped lever.
3) Compared with the direct combination of the dampers and the cantilever trusses, when the same quantity and the same damper parameters are arranged in the super high-rise building, the device can further increase the energy consumption of the dampers, improve the additional damping ratio of the structure under the action of earthquake and wind load, and ensure the safety of the structure; also, the number of dampers arranged on the same structure under the same earthquake and wind load can be reduced, thereby reducing the construction cost.
4) Compared with the mode that the damper is vertically arranged at the end part of the cantilever truss in the reinforcing layer, the damping system can achieve 5.0 times of the displacement amplification coefficient of the damper which is vertically arranged at the end part of the cantilever truss in the reinforcing layer. The displacement amplification coefficient can reach about 10.0, the shock absorption effect is good, and the working efficiency is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate and do not limit the invention, and together with the description serve to explain the principle of the invention:
FIG. 1 is a schematic diagram of a prior art diagonal arrangement mechanism;
FIG. 2 is a schematic diagram of a prior art lasso deployment mechanism;
FIG. 3 is a schematic view of a prior art boom truss end vertically disposed damper;
FIG. 4 is a front elevational view of the structure of the present invention;
FIG. 5 is a schematic illustration of a displacement of a device damper;
FIG. 6 is a second schematic diagram of displacement of a device damper;
FIG. 7 is a schematic diagram of the overall structure of the original structure;
FIG. 8 is a schematic diagram of the overall structure of the present invention;
FIG. 9 is a schematic view of the overall structure of a prior art reinforcement layer with dampers vertically disposed at the ends of the outrigger truss;
reference numerals in the drawings: 1. the device comprises a frame column, a core tube, a 3 end plate, a 4 node plate, a 5.T-shaped lever, a 5-1T-shaped lever cross rod, a 5-2T-shaped lever vertical rod, a 6 first lug plate, a 7 second lug plate, a 8 third lug plate, a 9 damper, a 10 upper chord, a 11 diagonal web member, a 12 lower chord and a 13 instability prevention plate.
Detailed Description
The present invention will now be described in detail with reference to the drawings and the specific embodiments thereof, wherein the exemplary embodiments and descriptions of the present invention are provided for illustration of the invention and are not intended to be limiting.
As shown in fig. 4, an energy dissipation and shock absorption system of a T-shaped lever mechanism cantilever truss comprises a cantilever truss arranged between a core tube 2 and a frame column 1, wherein the end part of the cantilever truss is connected with a shock absorption mechanism hinged by a T-shaped lever 5 and a damper 9; the T-shaped lever 5 comprises a T-shaped lever cross rod 5-1 and a T-shaped lever vertical rod 5-2, wherein the right end of the T-shaped lever cross rod 5-1 is hinged with the outer end of the cantilever truss, and the left end of the T-shaped lever cross rod 5-1 is hinged with the frame column 1; the T-shaped lever vertical rod 5-2 is hinged with the left end of the damper 9, and the right end of the damper 9 is hinged with the outer end of the cantilever truss.
The cantilever truss body comprises an upper chord member 10, a lower chord member 12 and a diagonal web member 11, wherein the diagonal web member 11 is diagonally and cross-connected between the upper chord member 10 and the lower chord member 12. The outer end of the cantilever truss is not directly connected with the peripheral frame column 1, but a layout space for placing the T-shaped lever 5 and the damper 9 is reserved. One end of the cantilever truss is connected with the core tube 2, and the cross connection part of the inclined web member 11 at the other end and the upper chord member 10 is connected with the ear plate through the end plate 3. The end plate 3 is designed to connect the outer end of the cantilever truss with the right end of the T-shaped lever cross rod, the end plate 3 is arranged at the intersection of the inclined web member 11 at the outer end of the cantilever truss and the upper chord member 10, and the end plate is fixedly connected with the lug plate 7 by adopting welding or bolt connection; the right end of the T-shaped lever cross rod is connected with the end plate 3 through the lug plate 7, and the T-shaped lever cross rod is hinged with the lug plate 7 through a rotating shaft; the outer end inclined web member 11 and the upper chord member 10 of the boom truss are connected with the end plate 3 through welding. The specific materials, strength and model of the end plate meet the related standard requirements, and the dimension of the end plate is processed and manufactured according to the end condition of the cantilever truss.
The ear plates comprise a first ear plate 6 and a second ear plate 7 which are connected with two ends of the T-shaped lever cross rod 5-1, and a third ear plate 8 which is connected with a damper 9, wherein one end of the first ear plate 6 is hinged with the T-shaped lever cross rod 5-1, and the other end is connected with a node plate 4 arranged on the frame column 1; one end of the second lug plate 7 is hinged with the T-shaped lever cross rod 5-1, and the other end of the second lug plate is connected with the end plate 3; one end of the third lug plate 8 is hinged with the damper 9, and the other end of the third lug plate is connected with the outer end part of the lower chord member 12 of the cantilever truss.
The node plate 4 is arranged on the inner side surface of the frame column 1, the node plate is fixedly connected with the first lug plate 6 by adopting welding or bolting, and the left end of the first lug plate 6 and the left end of the T-shaped lever cross rod 5-1 are hinged through a rotating shaft. The end plate 3 at the cross connection part of the inclined web member 11 at the outer end of the cantilever truss and the upper chord member 10 is welded or connected by bolts, the end plate 3 is fixedly connected with the second lug plate 7, and the second lug plate 7 is hinged with the right end of the T-shaped lever cross rod 5-1 through a rotating shaft. The cross connection part of the inclined web member 11 at the outer end of the boom truss and the lower chord member 12 is connected with the third lug plate 8, and the third lug plate 8 is hinged with the outer end of the lower chord member 12 of the boom truss through a rotating shaft.
The device also comprises anti-instability plates 13 which are welded and connected to the front side and the rear side of the T-shaped lever vertical rod 5-2 and are symmetrically arranged, the middle part of the anti-instability plates 13 and the middle part of the T-shaped lever vertical rod 5-2 are not in welding relation, the upper ends of the anti-instability plates 13 are welded with the upper ends of the T-shaped lever vertical rods 5-2, and the lower ends of the anti-instability plates 13 are welded and connected with the lower ends of the T-shaped lever vertical rods 5-2.
In the invention, when the damper reaches the limit displacement or the limit speed, the node plate is in an elastic working state under the action of the corresponding damping force and cannot be damaged by slipping, pulling out and the like; the end plate is also in an elastic working state and cannot be damaged by sliding, pulling out and the like; the earplates are also in an elastic working state and cannot be damaged by sliding, pulling out and the like.
The working efficiency of the damper is judged by using a displacement amplification factor f, and the value of the displacement amplification factor f is the ratio of the relative displacement of two ends of the damper to the interlayer displacement. The invention relates to an energy dissipation and shock absorption system of a T-shaped lever mechanism cantilever truss, which is characterized in that the length R2 of a T-shaped lever vertical rod, the length R1 of a T-shaped lever cross rod and the length of a damper are determined according to the height L1 of the cantilever truss, the extension length L2 of an upper chord of the cantilever truss from a core tube, the extension length L3 of a lower chord of the cantilever truss from the core tube and the limit displacement of the damper. According to one embodiment of the invention, the extension length L2 of the upper chord member of the boom truss from the core barrel is as large as possible, and the core barrel enables the two ends of the damper to deform through leverage, so that the damping efficiency is higher. The T-shaped lever vertical rod R2 can take the boom truss height L1, namely R2=L1; in this embodiment, the damper length is l=0.5r1+l2-L3.
In the prior art, the displacement amplification coefficient f of the diagonal mechanism and the herringbone mechanism is smaller than 1, the working rate is lower, and the occupied building space is overlarge. In addition, the damper is vertically arranged at the end part of the cantilever truss in the reinforcing layer, the core tube is utilized to bend and deform to play a role of the damper, the energy consumption efficiency of the damper is improved through the amplification of the cantilever lever, and the displacement amplification factor f of the damper is the ratio of the cantilever length L2 to the cantilever truss height L1, namely f=L2/L1=U2/U1. In one embodiment of the invention, l2=7-12 m, l1=3.9-5.2 m, when l2=10 m, l1=5 m, f=2.0.
For the vertically arranged T-lever connected horizontally arranged damper of the present invention, it was deduced that the displacement amplification factor f=l2·r2/l1·r1 of the damper arrangement mechanism of the present invention, according to engineering experience, r1=1-2 m, r2=l1=3.9-5.2 m, when r2=l1=5 m, r1=1, l2=10 m, f=l2·r2/l1·r1≡10.0. The displacement amplification coefficient of the invention can reach 5 times of the displacement amplification coefficient of the cantilever truss end part vertically arranged damper type in the reinforcing layer. According to deduction, the displacement amplification coefficient of the invention can reach about 10.0, the damping effect is good, and the working efficiency is high.
Table 1 below shows the displacement magnification ratio comparison of the damper arrangement mechanism of the present invention with the prior art in the form of a damper vertically arranged at the end of the outrigger truss in the diagonal arrangement mechanism, lasso arrangement mechanism and reinforcement layer.
TABLE 1 contrast of the damper arrangement mechanism of the present invention with the displacement magnification factor in the form of vertically arranging dampers at the ends of the outrigger truss in the diagonal arrangement mechanism, lasso arrangement mechanism and reinforcement layer
An embodiment of the displacement of the damper of the device according to the invention is shown in fig. 5, in which the solid lines represent the positions of the bars when undeformed and the dashed lines represent the positions of the bars after deformation. Under the action of earthquake and wind load, the structure is laterally deformed, the core tube is laterally deformed, relative displacement U1 is generated rightwards between layers, the bending deformation is transmitted to the outer end part of the cantilever truss (the joint of the cantilever truss and the T-shaped lever) through the leverage of the cantilever truss body, the T-shaped lever is driven to displace, the displacement of the two ends of the damper is reduced, and the damper starts to work and consumes energy.
A further embodiment of the device according to the invention is shown in which the damper is displaced, as shown in fig. 6, wherein the solid lines represent the positions of the bars when undeformed and the dashed lines represent the positions of the bars after deformation. Under the action of earthquake and wind load, the structure is laterally deformed, the core tube is laterally deformed, relative displacement U1 is generated between layers leftwards, the bending deformation is transmitted to the outer end part of the cantilever truss (the joint of the cantilever truss and the T-shaped lever) through the leverage of the cantilever truss body, the T-shaped lever is driven to displace, the displacement of the two ends of the damper is increased, and the damper starts to work to consume energy.
As shown in fig. 7, a schematic overall structure of the original structure is shown. The super high-rise building frame-core tube structure system is generally provided with a cantilever truss on a building equipment layer (or a refuge layer) to form a rigid reinforcing layer, so that the overall side rigidity and anti-overturning capability of the structure are enhanced. However, after the arrangement, the whole rigidity of the structure is increased, so that the period is shortened, the earthquake effect is increased, meanwhile, the internal force of the core tube is suddenly changed, a weak layer is formed, the core tube is seriously damaged, and the later repair difficulty is high.
Fig. 9 is a view showing a conventional reinforcement layer in which dampers are vertically arranged at the ends of a cantilever truss. As shown in FIG. 8, the invention is a schematic diagram of the whole structure, and the T-shaped lever damper arrangement mechanism is arranged in the traditional rigid cantilever truss to form the cantilever truss (also called as a flexible reinforcing layer) with the damper, so that the problem of unfavorable earthquake-proof design brought by the rigid reinforcing layer is solved under the action of earthquake and wind load, the energy dissipation and vibration reduction effects of the damper are fully exerted, and the advantages of the cantilever truss can be exerted.
The damping process of the invention is as follows:
under the action of earthquake and wind load, relative displacement U1 is generated between layers, the displacement is transmitted to the end part of the cantilever truss (the joint of the cantilever truss and the T-shaped lever) through the cantilever truss, the T-shaped lever is driven to displace, and the damper generates a tension and compression trend along the axis direction, so that the distance between the two ends of the damper is changed to generate displacement, and further the damper 9 works to realize energy dissipation and shock absorption.
Under the action of earthquake and wind load, the damper is amplified twice before and after displacement, firstly, the bending deformation of the core tube is transmitted to the vertical deformation U2 at the outer end part of the cantilever truss through the lever action of the cantilever truss body, and the vertical deformation is amplified to the two ends of the damper again through the T-shaped lever, namely, the invention finally amplifies the bending deformation of the core tube to the two ends of the damper 9, gradually realizes the gradual amplification function, and realizes the purposes of energy dissipation and shock absorption through the damper 9.
Modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the scope of the appended claims. Therefore, the invention is not limited to the above embodiments, and those skilled in the art, based on the disclosure of the invention, should make improvements and modifications without departing from the scope of the invention.
Claims (5)
1. The energy dissipation and shock absorption system of the cantilever truss of the T-shaped lever mechanism comprises a cantilever truss arranged between a core tube (2) and a frame column (1), and is characterized in that the end part of the cantilever truss is connected with a shock absorption mechanism hinged by a T-shaped lever (5) and a damper (9); one end of the T-shaped lever (5) is hinged with the outer end of the cantilever truss, and the other end of the T-shaped lever is hinged with the frame column (1); the lower end of the T-shaped lever (5) is hinged with a damper (9), and the extending end of the damper (9) is hinged at the outer end of the cantilever truss;
the cantilever truss comprises an upper chord member (10), a lower chord member (12) and an inclined web member (11);
the T-shaped lever (5) comprises a T-shaped lever cross rod (5-1) and a T-shaped lever vertical rod (5-2), and two ends of the T-shaped lever cross rod (5-1) are respectively connected with the cross connection part of the frame column (1) and the inclined web member (11) and the upper chord member (10) through lug plates; the lower end of the T-shaped lever vertical rod (5-2) is hinged with the damper (9) through an ear plate;
damper lengthLength of cross bar of T-shaped lever>Extension of the upper chord of the boom truss from the core tube>And extension length of lower chord of boom truss from core tube +.>The method meets the following conditions:
displacement amplification factor of shock absorbing mechanismHeight of truss with cantilever>Extension length of upper chord member of boom truss from core tubeT-shaped lever cross bar length->And T-shaped lever vertical rod length->The method meets the following conditions:
。
2. a T-lever mechanism boom truss energy dissipating and shock absorbing system according to claim 1, wherein said diagonal web member (11) is diagonally cross-connected between said upper chord member (10) and lower chord member (12); one end of the cantilever truss is connected with the core tube (2), and the cross connection part of the other end of the cantilever truss, the upper chord member (10) and the inclined web member (11) is connected with the end plate (3).
3. The energy dissipation and shock absorption system of the cantilever truss of the T-shaped lever mechanism according to claim 1, wherein the ear plates comprise a first ear plate (6) and a second ear plate (7) hinged with two ends of a cross rod (5-1) of the T-shaped lever, and a third ear plate (8) hinged with a damper (9); the other end of a first lug plate (6) hinged with the T-shaped lever cross rod (5-1) is connected with a node plate (4) arranged on the frame column (1); the other end of a second lug plate (7) hinged with the T-shaped lever cross rod (5-1) is connected with the end plate (3); the other end of the third lug plate (8) hinged with the damper (9) is connected with the outer end part of the lower chord member (12) of the cantilever truss.
4. A T-lever mechanism boom truss energy dissipating and shock absorbing system according to claim 3, wherein said end plate (3) is welded or bolted to the second ear plate (7); the second lug plate (7) is hinged with the T-shaped lever cross rod (5-1) through a rotating shaft; the other end of the end plate (3) is connected with the intersection of the inclined web member (11) at the outer end of the cantilever truss and the upper chord member (10) through welding.
5. The energy dissipation and shock absorption system of the cantilever truss of the T-shaped lever mechanism according to claim 1, wherein the front side and the rear side of the T-shaped lever vertical rod (5-2) are symmetrically connected with an anti-instability plate (13), the anti-instability plate (13) is not connected with the middle part of the T-shaped lever vertical rod (5-2), and the upper end and the lower end of the anti-instability plate (13) are respectively connected with the T-shaped lever vertical rod (5-2).
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| CN113585844A (en) * | 2021-07-07 | 2021-11-02 | 北京市建筑设计研究院有限公司 | Lever type amplification energy dissipation cantilever with lead core rubber support |
| CN113818584B (en) * | 2021-10-22 | 2022-08-16 | 同济大学 | Assembled energy dissipation cantilever structure based on particle damping |
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| CN109594671A (en) | 2019-04-09 |
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