CN109881808B

CN109881808B - High-performance steel frame damping support

Info

Publication number: CN109881808B
Application number: CN201910212518.4A
Authority: CN
Inventors: 韩爱红; 张新中; 郭滕滕; 唐克东; 李帆; 邓硕; 王玉超; 刘天昊
Original assignee: North China University of Water Resources and Electric Power
Current assignee: North China University of Water Resources and Electric Power
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-05-22
Anticipated expiration: 2039-03-20
Also published as: CN109881808A

Abstract

The invention provides a high-performance steel frame shock absorption support which mainly comprises a third fixing plate and a support base body, wherein the third fixing plate is positioned above the support base body, the support base body comprises a horizontal shock absorption base body and a vertical shock absorption base body, the horizontal shock absorption base body comprises a first fixing plate, a second fixing plate, a lead body and a buffer sleeve, a shock absorption body is arranged between the first fixing plate and the second fixing plate, the lead body vertically penetrates through the middle parts of the first fixing plate, the second fixing plate and the shock absorption body, the buffer sleeve is sleeved on the outer wall of the lead body, the vertical shock absorption base body is fixed above the second fixing plate, the vertical shock absorption base body comprises an elastic piece and a guide piece, the guide piece is positioned in the middle part of the vertical shock absorption base body, guide rods are vertically arranged in a guide area, and support rods are respectively arranged on the left side and the right. The invention can accelerate the damping rate and the anti-seismic effect of the vibration and has high energy absorption capacity.

Description

High-performance steel frame damping support

Technical Field

The invention belongs to the technical field of building structures, and particularly relates to a high-performance steel frame damping support.

Background

The shock-isolating support is a shock-isolating technology developed in recent years for the bottom of a building structure, and is characterized in that horizontal earthquake acting force is effectively isolated and transmitted to an upper structure through a foundation, so that the horizontal vibration of the upper structure is reduced, and the upper structure is effectively protected. The existing product is mainly a lead core rubber shock insulation support. The existing various shock insulation support products are widely applied to multi-layer and high-rise shock insulation structures. Although the research of multidimensional earthquake has made some breakthrough progress, the application is less; at present, the theoretical level of the mature earthquake calculation analysis applied to the actual engineering structure reaches three-dimension, so that the shock insulation research aiming at the structure three-dimension earthquake is particularly important. Under the action of a three-dimensional earthquake, because of the conflict between the vertical rigidity requirement of a building structure and vertical shock insulation, the existing devices for vertical shock insulation are few.

In order to improve the seismic performance of the structure, seismic isolation design is generally applied. The seismic isolation and reduction technology is used for separating a structure from seismic motion which possibly causes damage as much as possible by adopting an isolation and reduction device, so that seismic force and energy transmitted to the structure are reduced. In the prior art, the separation is generally realized by increasing the flexibility of a system and providing proper damping, and the principle is that the self-vibration period of a building structure is prolonged by a vibration isolation device, and the damping characteristic of the structure is increased, so that the acceleration response of the building structure in the earthquake is reduced, and simultaneously, the earthquake force can be uniformly distributed on each structure, and the earthquake resistance of the building structure is improved. The existing shock insulation device generally adopts a lead core rubber support with lower cost, simple manufacturing process and stable performance. The lead core rubber support comprises a lead core rod, a rubber layer and a steel plate, the rubber layer and the steel plate are laminated and bonded, the lead core rod is vertically embedded in the rubber support, and the lead core rubber support is fixedly connected with a bridge and a pier through a connecting plate.

The types of laminated rubber supports which are applied more in practical engineering mainly comprise natural rubber supports, lead core rubber supports and high-damping rubber supports. However, the results of the mechanical property tests of the laminated rubber bearing by national scholars such as New Zealand, Japan, China and America show that the torsion resistance of the laminated rubber bearing is still weak. The application of the laminated rubber bearing to the irregular structure still difficultly solves the problem that the torsional deformation of the upper structure exceeds the standard, and more dangerously, the torsional deformation of the upper structure is transmitted to the rubber bearing with weak torsional resistance, so that the rubber bearing is fatally damaged, and the overall shock resistance and torsional resistance of the structure are reduced. In order to improve the defects of insufficient tensile and torsional resistance of the laminated rubber support and reduce the fatigue damage of horizontal and vertical external forces to the support, the laminated rubber support has the effects of high performance and high stability and effectively attenuates the frequency of vibration transmission between steel frames.

Disclosure of Invention

Aiming at the problems, the invention provides a high-performance steel frame damping support.

The technical scheme of the invention is as follows: a high-performance steel frame shock absorption support mainly comprises a third fixing plate and a support base body, wherein the third fixing plate is located above the support base body, the support base body comprises a horizontal shock absorption base body and a vertical shock absorption base body, the horizontal shock absorption base body comprises a first fixing plate, a second fixing plate, a lead body and a buffer sleeve, a shock absorption body is arranged between the first fixing plate and the second fixing plate, the lead body vertically penetrates through the middle parts of the first fixing plate, the second fixing plate and the shock absorption body, the shock absorption body is formed by vertically staggering and vulcanizing a plurality of steel plates and a bonding layer, the buffer sleeve is sleeved on the outer wall of the lead body, constraint blocks are uniformly distributed in the buffer sleeve, steel blocks are respectively arranged at the four corners and the center of each constraint block, 8 elastic rods are arranged in each constraint block, and 4 steel blocks at the four corners are sequentially connected through 4 elastic rods, the steel block at the center is connected with the middle parts of 4 elastic rods for connecting the steel blocks at four corners through 4 elastic rods, a field structure is formed between the steel block and the elastic rods, the vertical shock insulation base body comprises elastic pieces and guide pieces, each elastic piece comprises a first connecting sleeve, an elastic plate, a spring plate, a second connecting sleeve and a damping layer, the lower end of the first connecting sleeve is rigidly connected with a second fixing plate, the spring plates are positioned in the middle part above the second fixing plate and are symmetrically positioned at the left end and the right end of the spring plate, one end of each elastic plate is hinged with the upper end of the corresponding spring plate, the other end of each elastic plate is connected with the lower end of the corresponding first connecting sleeve, the second connecting sleeve is positioned on the inner side of the corresponding first connecting sleeve, the lower end of the corresponding second connecting sleeve is connected with the corresponding elastic plate, the upper end of the corresponding second connecting sleeve is connected with a third fixing plate, and the damping layer is positioned between the first connecting sleeve, the left and right sides of damping layer is equipped with places the chamber, it is equipped with first buffer beam and second buffer beam to place the vertical symmetry of intracavity portion, first buffer beam and second buffer beam overcoat respectively are equipped with the spring, and first buffer beam top links to each other with the third fixed plate, and first buffer beam below is equipped with the recess, second buffer beam top be equipped with the identical lug of recess, second buffer beam below links to each other with the elastic plate, the guide is located vertical shock insulation base member middle part, and the vertical guide bar that is equipped with of guide, the guide bar below links to each other with the spring plate, and the guide bar top links to each other with the third fixed plate, and the vertical left and right sides of guide bar equidistance respectively is equipped with the bracing piece, bracing piece one end and guide bar outer wall rigid connection, the other end and second connecting sleeve rigid connection.

Furthermore, the joint is fixed in the handing-over department of principal post and girder, connects for being the standing groove of cross structure, and the terminal surface is equipped with the screw from top to bottom, and both sides are equipped with the handing-over board, the both ends of girder and the identical cross projection of joint, the girder both sides be equipped with the principal post about the terminal surface pass through bolted connection, both sides pass through the bolt in the girder connection, improve the stability between principal post and the girder, do not take place relative displacement.

Furthermore, the support rods on the left side and the right side of the guide rod are connected through the stabilizer bar, and when the guide rod moves up and down, the stabilizing effect is achieved.

Further, the lower end of the third fixing plate is provided with a groove, a third connecting plate is arranged in the groove, a bonding plate is arranged between the third connecting plate and the groove, the bonding plate has good compression resistance and a limiting effect, the longitudinal compression resistance is prevented from being excessive, and the stability of the vertical anti-seismic support is improved.

Further, the damping layer 415 is made of the following components in parts by weight: 10-35 parts of methyl hydrogen-containing silicone oil, 6-12 parts of polyvinylidene fluoride, 15-25 parts of fiber, 13-30 parts of fluorocarbon resin, 8-15 parts of graphene, 15-20 parts of dibenzoyl peroxide and 12-15 parts of mica powder, so that the earthquake energy can be effectively reduced, and the stability is improved.

Furthermore, the inclination angle between the stay bar and the guide bar is 125 degrees, so that the external force applied to the guide bar can be shared, and the external force is buffered.

Furthermore, the restraint blocks are vertically in a staggered distribution structure in the buffer sleeve, so that the lead body is guaranteed to be subjected to external force, the external force can be prevented from being overlarge, the lead body is protected, and the external force is dispersed.

Further, the preparation method of the damping layer material comprises the following steps: 10-35 parts of methyl hydrogen-containing silicone oil, 6-12 parts of polyvinylidene fluoride, 15-25 parts of fiber, 13-30 parts of fluorocarbon resin, 8-15 parts of graphene, 15-20 parts of dibenzoyl peroxide and 12-15 parts of mica powder are sequentially added into a stirrer for mixing and stirring, the temperature is increased to 180-fold organic silicon temperature of 220 ℃ in the nitrogen atmosphere, the stirring speed is 1500-fold organic silicon temperature of 1800r/min, the heat preservation treatment is 20-30min, the pressure is adjusted to 0.2-0.3MPa, the melting treatment is carried out at the temperature of 260-fold organic silicon temperature of 330 ℃, the homogenization treatment is carried out, and the pressure forming is carried out at normal temperature.

The working principle of the invention is as follows: about block can extrude the lead body in the cushion collar when taking place the earthquake, about block carries out external force dispersion through the elastic rod, it causes the damage fracture to lead body surface to reduce the deformation power, ultimate load capacity reinforcing, improve the yield power consumption performance, elastic component and guide bar consume vertical external force in the vertical shock insulation base member, first buffer lever and second buffer lever reciprocate in the damping zone, the structure has been reduced and has swayd under vertical earthquake action, the guide bar passes through under the effect of elastic plate and spring plate, combine the second connecting sleeve, initial displacement in the opposite direction of relative displacement, consumption ability is strong and improve the damping, the third fixed plate prevents that excessive longitudinal sliding from causing the damage, do benefit to the stability of protection steel frame.

Compared with the prior art, the invention has the beneficial effects that: the main column and the main beam are connected through the steel frame, deformation of the steel frame is reduced, deformation performance of the steel frame is improved, the anti-seismic support is fixed below the steel frame and can overcome deformation caused by external force in an earthquake process, damping can be improved horizontally and vertically through the anti-seismic support, earthquake energy caused by earthquake is consumed, fatigue damage cannot be caused, the anti-seismic support has strong deformation capacity, different displacements and loads are adapted, vibration transmission of the steel frame is effectively attenuated, damping of the vertical anti-seismic support is improved through lead body protection, and damping rate and anti-seismic effect of the earthquake are accelerated.

Drawings

FIG. 1 is a schematic structural view of a seismic isolation mount of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a constraint block according to the present invention;

fig. 4 is a cross-sectional view B-B of fig. 1.

Wherein, 1-third fixed plate, 11-groove, 12-third connecting plate, 13-bonding plate, 2-vibration isolation support, 3-horizontal vibration isolation base body, 31-first fixed plate, 32-second fixed plate, 33-lead body, 34-buffer sleeve, 35-vibration isolation body, 351-steel plate, 352-bonding layer, 36-constraint block, 37-steel block, 38-elastic rod, 4-vertical vibration isolation base body, 41-elastic piece, 411-first connecting sleeve, 412-elastic plate, 413-spring plate, 414-second connecting sleeve, 415-damping layer, 42-guide piece, 421-guide rod, 422-support rod, 423-stabilizer rod, 5-placing cavity, 51-first buffer rod, 511-groove, 511-second connecting sleeve, 52-second bumper, 521-bump.

Detailed Description

Example 1

As shown in fig. 1 and 2, a high-performance steel frame damping support mainly comprises a third fixing plate 1 and a support base body 2, the third fixing plate 1 is positioned above the support base body 2, a groove 11 is formed in the lower end of the third fixing plate 1, a third connecting plate 12 is arranged in the groove 11, a bonding plate 13 is arranged between the third connecting plate 12 and the groove 11, the support base body 2 comprises a horizontal shock insulation base body 3 and a vertical shock insulation base body 4, the horizontal shock insulation base body 3 comprises a first fixing plate 31, a second fixing plate 32, a lead body 33 and a buffer sleeve 34, a shock insulation body 35 is arranged between the first fixing plate 31 and the second fixing plate 32, the lead body 33 vertically penetrates through the middle parts of the first fixing plate 31, the second fixing plate 32 and the shock insulation body 35, the shock insulation body 35 is formed by vertically staggered vulcanization of a plurality of steel plates 2 and the bonding layer 3, the buffer sleeve 34 is sleeved on the outer wall of the lead body 33, the, the elastic member 41 comprises a first connecting sleeve 411, an elastic plate 412, a spring plate 413, a second connecting sleeve 414 and a damping layer 415, wherein the lower end of the first connecting sleeve 411 is rigidly connected with the second fixing plate 32, the spring plate 413 is positioned in the middle part above the second fixing plate 32, two elastic plates 412 are arranged and symmetrically positioned at the left end and the right end of the spring plate 413, one end of the elastic plate 412 is hinged with the upper end of the spring plate 413, the other end of the elastic plate 412 is connected with the lower end of the first connecting sleeve 411, the second connecting sleeve 414 is positioned inside the first connecting sleeve 411, the lower end of the second connecting sleeve 414 is connected with the elastic plate 412, the upper end of the second connecting sleeve 414 is connected with the third fixing plate 1, the damping layer 415 is positioned between the first connecting sleeve 411 and the second connecting sleeve 414, the damping layer 415 is made of a composite fiber vibration isolation pad material, the left side and the right side of the damping layer 415 are provided with a placing cavity 5, a first buffer rod 51 and a, the first buffer rod 51 and the second buffer rod 52 are respectively sleeved with a spring 53, the upper part of the first buffer rod 51 is connected with the third fixing plate 1, a groove 511 is arranged below the first buffer rod 51, a convex block 521 matched with the groove 511 is arranged above the second buffer rod 52, the lower part of the second buffer rod 52 is connected with the elastic plate 412, and the guide piece 42 is positioned in the middle of the vertical shock insulation base body 4.

As shown in fig. 1 and 3, restraint blocks 36 are uniformly distributed in the buffer sleeve 34, the restraint blocks 37 are in a staggered distribution structure in the vertical direction of the buffer sleeve 34, steel blocks 37 are respectively arranged at four corners and the center of the restraint blocks 36, 8 elastic rods 38 are arranged in the restraint blocks 36, the 4 steel blocks 37 at the four corners are sequentially connected through the 4 elastic rods 38, the steel block 37 at the center is connected with the middle parts of the 4 elastic rods 38 connected with the steel blocks 37 at the four corners through the 4 elastic rods 38, and a field structure is formed between the steel blocks and the elastic rods.

As shown in fig. 1 and 4, a guide rod 421 is vertically arranged on the guide member 42, the lower portion of the guide rod 421 is connected to the spring plate 413, the upper portion of the guide rod 421 is connected to the third fixing plate 1, support rods 422 are equidistantly arranged on the vertical left and right sides of the guide rod 421, one end of each support rod 422 is rigidly connected to the outer wall of the guide rod 421, the other end of each support rod 422 is rigidly connected to the second connecting sleeve 414, the support rods 422 on the left and right sides of the guide rod 421 are connected to each other through a stabilizing rod 423, and the inclination angle between each support rod 422 and the guide rod.

Example 2

Different from the embodiment 1, the damping layer 415 is made of the following components in parts by weight: 35 parts of methyl hydrogen-containing silicone oil, 12 parts of polyvinylidene fluoride, 25 parts of fiber, 30 parts of fluorocarbon resin, 15 parts of graphene, 20 parts of dibenzoyl peroxide and 15 parts of mica powder, wherein the preparation method comprises the following steps: sequentially adding into a stirrer for mixing and stirring, heating to 220 deg.C under nitrogen atmosphere, stirring at 1800r/min, maintaining the temperature for 30min, adjusting pressure to 0.3MPa, melting at 330 deg.C, homogenizing, and molding under normal temperature under pressure.

Restraint piece 36 can extrude plumb body 33 in buffer jacket 34 when taking place the earthquake, restraint piece 36 carries out external force dispersion through elastic rod 38, it causes the damage fracture to plumb body 33 surface to reduce the deformation power, ultimate load capacity reinforcing, improve the yield energy consumption performance, elastic component 41 and guide bar 421 consume vertical external force in the vertical shock insulation base member 4, first buffer bar 51 and second buffer bar 52 reciprocate in damping layer 415, the structure has reduced swaying under the vertical earthquake effect, guide bar 421 passes through the effect of elastic plate 412 and spring plate 413, combine second connecting sleeve 414, initial displacement in opposite direction can be shifted relatively, consumption ability reinforce and improvement damping, third fixed plate 1 prevents that excessive longitudinal sliding from causing the damage, do benefit to the stability of protection steel frame.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a steel frame shock mount of high performance, its characterized in that mainly includes third fixed plate (1) and support base member (2), third fixed plate (1) is located support base member (2) top, support base member (2) are including horizontal shock insulation base member (3) and vertical shock insulation base member (4), horizontal shock insulation base member (3) are including first fixed plate (31), second fixed plate (32), lead body (33), cushion collar (34), first fixed plate (31) with be equipped with shock insulation body (35) between second fixed plate (32), the vertical middle part that runs through to be located first fixed plate (31), second fixed plate (32) and shock insulation body (35) of lead body (33), shock insulation body (35) are by a plurality of steel sheet (351) and tie coat (352) crisscross vulcanization from top to bottom and make, cushion collar (34) cover is established on lead body (33) outer wall, restraint blocks (36) are uniformly distributed in the buffer sleeve (34), steel blocks (37) are respectively arranged at four corners and the center of each restraint block (36), 8 elastic rods (38) are arranged in each restraint block (36), 4 steel blocks (37) at the four corners are sequentially connected through 4 elastic rods (38), the steel block (37) at the center is connected with the middle of 4 elastic rods (38) connected with the steel blocks (37) at the four corners through 4 elastic rods (38), a field structure is formed between each steel block (37) and each elastic rod (38), each vertical shock insulation base body (4) comprises an elastic piece (41) and a guide piece (42), each elastic piece (41) comprises a first connecting sleeve (411), an elastic plate (412), a spring plate (413), a second connecting sleeve (414) and a damping layer (415), the lower end of each first connecting sleeve (411) is rigidly connected with a second fixing plate (32), the spring plate (413) is located in the middle above the second fixing plate (32), the number of the elastic plates (412) is two, the two ends are symmetrically located at the left end and the right end of the spring plate (413), one end of the elastic plate (412) is hinged to the upper end of the spring plate (413), the other end of the elastic plate (412) is connected with the lower end of the first connecting sleeve (411), the second connecting sleeve (414) is located on the inner side of the first connecting sleeve (411), the lower end of the second connecting sleeve (414) is connected with the elastic plate (412), the upper end of the second connecting sleeve (414) is connected with the third fixing plate (1), the damping layer (415) is located between the first connecting sleeve (411) and the second connecting sleeve (414), the left side and the right side of the damping layer (415) are provided with placing cavities (5), the first buffer rod (51) and the second buffer rod (52) are vertically and symmetrically arranged inside the placing cavities (5), and springs (53) are respectively sleeved outside the first buffer rod (51) and the second buffer rod (52), first buffer beam (51) top links to each other with third fixed plate (1), and first buffer beam (51) below is equipped with recess (511), second buffer beam (52) top be equipped with identical lug (521) of recess (511), second buffer beam (52) below links to each other with elastic plate (412), guide (42) are located vertical shock insulation base member (4) middle part, and guide (42) are vertical to be equipped with guide bar (421), guide bar (421) below links to each other with springboard (413), and guide bar (421) top links to each other with third fixed plate (1), and the vertical left and right sides of guide bar (421) equidistance respectively is equipped with bracing piece (422), bracing piece (422) one end and guide bar (421) outer wall rigid connection, the other end and second connecting sleeve (414) rigid connection.

2. A high performance steel frame shock mount as claimed in claim 1 wherein said damping layer (415) is a composite fiber vibration isolation pad material.

3. A high-performance steel frame shock-absorbing mount as set forth in claim 1, wherein the support rods (422) of the guide bar (421) at left and right sides are connected to each other by a stabilizer bar (423).

4. A high-performance steel frame shock absorption support as claimed in claim 1, wherein a groove (11) is formed at the lower end of said third fixing plate (1), a third connecting plate (12) is arranged in said groove (11), and a bonding plate (13) is arranged between said third connecting plate (12) and said groove (11).

5. A high performance steel frame shock mount as claimed in claim 1 wherein said damping layer (415) is made of the following materials in parts by weight: 10-35 parts of methyl hydrogen-containing silicone oil, 6-12 parts of polyvinylidene fluoride, 15-25 parts of fiber, 13-30 parts of fluorocarbon resin, 8-15 parts of graphene, 15-20 parts of dibenzoyl peroxide and 12-15 parts of mica powder.

6. A high performance steel frame shock mount as claimed in claim 3 wherein the angle of inclination between the support bar (422) and the guide bar (521) is 125 °.

7. A high performance steel frame shock mount as claimed in claim 1 wherein said restraint blocks (36) are vertically staggered within the cushion sheath (34).