CN109898910B - Assembled mild steel friction composite damper and assembling method thereof - Google Patents
Assembled mild steel friction composite damper and assembling method thereof Download PDFInfo
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- CN109898910B CN109898910B CN201910296556.2A CN201910296556A CN109898910B CN 109898910 B CN109898910 B CN 109898910B CN 201910296556 A CN201910296556 A CN 201910296556A CN 109898910 B CN109898910 B CN 109898910B
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000746 Structural steel Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Abstract
The invention provides an assembled soft steel friction composite damper and an assembling method thereof, wherein the assembled soft steel friction composite damper comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is respectively connected with a longitudinal building component, the second connecting plate is connected with a horizontal building component, the first connecting plate is fixedly connected with a first friction plate through a high-strength bolt, the second connecting plate is fixedly connected with a second friction plate through a high-strength bolt, the first friction plate is fixedly connected with the second friction plate through the high-strength bolt, the joint of the first connecting plate and the first friction plate, the joint of the second connecting plate and the second friction plate, and the joint of the first friction plate and the second friction plate are provided with a penetrating soft steel rod; when deformation is increased to a certain degree, the soft steel rod starts to participate in energy consumption, the organic combination of two different energy consumption mechanisms is realized, the assembled soft steel friction composite damper is assembled by adopting a full bolt, the manufacturing cost is low, the installation and the disassembly are convenient, and the application range is wide.
Description
Technical Field
The invention relates to an assembled mild steel friction composite damper and an assembling method thereof.
Background
The soft steel damper achieves the purpose of energy dissipation and shock absorption of the engineering structure by utilizing the low yield point, the longer plastic section and the good hysteresis characteristic of the soft steel. In 1972, kelly and other scholars proposed a soft steel damper and applied to the technical field of engineering energy dissipation and shock absorption, and proved that the hysteresis curve of the soft steel damper is full, and the earthquake effect can be effectively weakened. After that, researches on soft steel dampers are more and more carried out at home and abroad, various soft steel dampers are provided, and experiments prove that the soft steel dampers have good performance stability and fatigue performance, but have the defects of single energy consumption mechanism, no function under small shock, high shape requirement and the like. Meanwhile, most of node connection of the soft steel damper adopts a welding mode, and under the action of reciprocating earthquake, soft steel is easy to damage due to stress concentration.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is that the node connection of the existing soft steel damper mostly adopts a welding mode, and the soft steel is easy to be damaged due to stress concentration under the reciprocating earthquake action.
The specific embodiments of the invention are: the assembled soft steel friction composite damper comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is respectively connected with a longitudinal building component, the second connecting plate is connected with a horizontal building component, the first connecting plate is fixedly connected with a first friction plate through a high-strength bolt, the second connecting plate is fixedly connected with a second friction plate through a high-strength bolt, the first friction plate is fixedly connected with the second friction plate through a high-strength bolt, and a penetrating soft steel rod is arranged at the joint of the first connecting plate and the first friction plate, the joint of the second connecting plate and the second friction plate and the joint of the first friction plate and the second friction plate.
Further, the first connecting plate and the second connecting plate comprise bottom plates, the bottom plates are fixedly connected with webs perpendicular to the bottom plates, the bottom plates of the first connecting plates are connected with horizontal building members through high-strength bolts, the bottom plates of the second connecting plates are connected with longitudinal building members through high-strength bolts, one sides of the webs, which deviate from the bottom plates, are provided with mounting holes for passing through the high-strength bolts, the periphery of each mounting hole is provided with a plurality of round holes for a soft steel rod to pass through, the first friction plates and the second friction plates are provided with bolt holes corresponding to the mounting holes, and the first friction plates and the second friction plates are provided with steel rod holes corresponding to the round holes and with equal diameters.
Further, opposite ends of the first friction plate and the second friction plate are provided with mutually communicated bolt butt joint holes, and a plurality of steel rod butt joint holes are formed in the periphery of each bolt butt joint hole.
Further, the round holes and the steel bar holes are four.
Further, the first friction plate and the second friction plate are provided with a pair, the web plate of the first connecting plate is clamped between the pair of first friction plates, the web plate of the second connecting plate is clamped between the pair of second friction plates, and the pair of first friction plates and the pair of second friction plates are fixed in a staggered manner.
Further, the first friction plate and the second friction plate are connected at a right angle of 90 degrees.
Furthermore, the connecting plates and the friction plates are made of carbon structural steel materials, and the soft steel bars are soft steel with low yield points.
Further, stiffening ribs are fixed between the bottom plates and the webs of the first connecting plate and the second connecting plate.
The invention also comprises a method for assembling the assembled soft steel friction composite damper, which is characterized by comprising the following specific steps:
step S1: the two first connecting plates, the second connecting plates, the first friction plates, the second friction plates, the soft steel bars, the high-strength bolts and the nuts which are matched in prefabricated size are several;
step S2: fixing the first connecting plate longitudinal and longitudinal building components by using high-strength bolts; fixing the second connecting plate and the horizontal building component by using a high-strength bolt; fixing the first connecting plate and the first friction plate by using a high-strength bolt, and fixing the second connecting plate and the second friction plate by using a high-strength bolt;
taking a soft steel rod, and passing through the joint of the first connecting plate and the first friction plate and the joint of the second connecting plate and the second friction plate;
step S3: the high-strength bolt fixedly connects the first friction plate with the second friction plate, and the soft steel rod penetrates through the first friction plate and the second friction plate.
Compared with the prior art, the invention has the following beneficial effects: when the beam-column joints are relatively deformed, the friction plates can slide relatively, and a friction energy consumption mechanism plays a role; when deformation is increased to a certain degree, the soft steel rod starts to participate in energy consumption, the organic combination of two different energy consumption mechanisms is realized, the assembled soft steel friction composite damper is assembled by adopting a full bolt, the occupied space is small, the form is simple, the manufacturing cost is low, the installation and the disassembly are convenient, and the application range is wide.
Drawings
FIG. 1 is a schematic view of an assembled mild steel-friction composite damper according to an embodiment of the present invention applied to a beam-column joint;
FIG. 2 is a schematic front view of an assembled mild steel-friction composite damper according to an embodiment of the present invention;
FIG. 3 is a schematic top view of an assembled mild steel-friction composite damper according to an embodiment of the invention;
FIG. 4 is a schematic side view of a first connecting plate according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a front structure of a first connecting plate according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a front structure of a friction plate according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the front structure of a mild steel rod according to an embodiment of the present invention;
an H-column; i-beam; 1-a first connection plate; 2-a second connection plate; 3 (3') -a first friction plate; 4 (4') -a second friction plate; 5-high-strength bolts; 6-soft steel bars; 7-a bottom plate; 8-a web; 9-stiffening ribs; 10-a round holes; 11-b round holes; 12-c round holes; 13-d round holes; 14-A round holes; 15-B round holes; 16-floor bolt holes.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 to 7, the present invention proposes an assembled mild steel-friction composite damper, which includes a first connection plate 1, a second connection plate 2, a first friction plate 3, a second friction plate 4, a high-strength bolt 5, and a mild steel rod 6.
The first connecting plate 1 consists of a bottom plate 7 and a web plate 8, stiffening ribs 9 for increasing strength are arranged between the bottom plate and the web plate, the bottom plate is provided with bottom plate bolt holes 16, and the bottom plate is fixed with the column H through high-strength bolts passing through the bottom plate bolt holes 16; the two side surfaces of the web 8 are subjected to sand blasting; the second connecting plate 2 and the first connecting plate have the same shape and size, and are fixed with the beam I through high-strength bolts passing through the bottom plate bolt holes 16;
the web 8 of the first connecting plate 1 and the second connecting plate 2 is provided with an A round hole 14 (mounting hole) for passing through a high-strength bolt and 4B round holes 15 (steel bar holes) which are arranged on the periphery side of the A round hole 14 and used for penetrating through a soft steel bar;
the two side surfaces of the first friction plate and the second friction plate are subjected to sand blasting, in order to realize butt joint with the web plate, one end of the first friction plate and the second friction plate, facing the butt joint web plate, is provided with an a round hole 10 (a bolt hole) corresponding to an A round hole 14 of the web plate 8, 4B round holes 11 penetrating through a corresponding B round hole 15 of the soft steel rod with the web plate, and c round holes 12 and 4 d round holes 13 are symmetrically arranged; the two first friction plates and the two second friction plates are identical in shape and size, the web plates of the first connecting plate are positioned at two sides between the two first friction plates, and the web plates of the second connecting plate are positioned at two sides between the two second friction plates.
When the friction plate is fixed, the high-strength bolts sequentially pass through the a round hole 10 of the first friction plate 3, the A round hole 14 of the first connecting plate web 8 and the a round hole 10 of the first friction plate 3', so that the first friction plate 3 (3') is connected with the first connecting plate, and the friction plate is fastened and fixed by nuts; the first friction plate and the web plate of the first connecting plate form a friction pair M and a friction pair M';
the soft steel rod sequentially passes through the B round hole 11 of the first friction plate 3, the B round hole 15 of the first connecting plate web 8 and the B round hole 11 of the first friction plate 3', and is fastened and fixed by a screw cap;
in this embodiment, the two second friction plates have the same shape and size as the first friction plate, and the same connection mode as the first friction plate and the first connection plate, and the second friction plate 4 (4 ') and the second connection plate are connected by sequentially passing through the a round hole 10 of the second friction plate 4, the a round hole 14 of the web 8 of the second connection plate and the a round hole 10 of the second friction plate 4' through high-strength bolts, and are fastened and fixed by nuts; the second friction plate and the web plate of the second connecting plate form a friction pair N and a friction pair N';
the soft steel rod sequentially passes through the B round hole 11 of the second friction plate 4, the B round hole 15 of the web plate 8 of the second connecting plate and the B round hole 11 of the second friction plate 4', and is fastened and fixed by a screw cap;
the first friction plate is connected with the second friction plate at a right angle of 90 degrees, opposite ends of the first friction plate and the second friction plate are provided with c round holes 12 which are matched with each other and used for penetrating through high-strength bolts, d round holes 13 which are used for penetrating through soft steel bars, the layout of the d round holes 13 and the c round holes 12 is identical to that of the arrangement of the A round holes 14 and the B round holes 15 of the web 8, and the d round holes 13 penetrating through the soft steel bars surround the periphery of the c round holes 12.
The two first friction plates and the two second friction plates are laminated in a staggered and parallel manner, and sequentially pass through the c round hole 12 of the first friction plate 3, the c round hole 12 of the second friction plate 4, the c round hole 12 of the first friction plate 3 'and the c round hole 12 of the second friction plate 4' through high-strength bolts, so that the first friction plates and the second friction plates are connected and fastened and fixed through nuts; the first friction plate and the second friction plate form three friction pairs F, F' and f; the soft steel rod sequentially passes through the d round hole 13 of the first friction plate 3, the d round hole 13 of the second friction plate 4, the d round hole 13 of the first friction plate 3 'and the d round hole 13 of the second friction plate 4', and is fastened and fixed by a screw cap.
The structural members are deformed relatively under the action of earthquake, the first connecting plate, the first friction plate, the second friction plate and the second connecting plate respectively generate relative sliding torsion taking the high-strength bolt as the center, the friction pairs M, M ', N, N ', F, F ', f generate relative sliding, and a friction energy consumption mechanism starts to play a role. When the deformation is increased to a certain extent, the soft steel bar is sheared into the plastic energy consumption section, and a soft steel energy consumption mechanism is started.
The connecting plate and the friction plate are made of carbon structural steel with high strength; the soft steel rod is made of low-yield-point soft steel;
the assembly method of the structure comprises the following steps:
step S1: 2 connecting plates, 4 friction plates, 12 soft steel bars, 3 high-strength bolts and a plurality of nuts with matched prefabricated sizes;
step S2: taking a first connecting plate 1, a high-strength bolt 5 and two first friction plates 3 (3'), placing the first friction plates on two sides of a connecting web, sequentially penetrating through an a round hole 10, an A round hole 14 and an a round hole 10 by using the high-strength bolt, connecting the first friction plates with the first connecting plate, and fastening and fixing by using a nut; then 4 soft steel bars 6 are taken to sequentially pass through the B round hole 11, the B round hole 15 and the B round hole 11, and are fastened and fixed by nuts;
step S3: taking a second connecting plate 2, a high-strength bolt 5 and two second friction plates 4 (4'), placing the second friction plates on two sides of a connecting web, sequentially penetrating through an a round hole 10, an A round hole 14 and an a round hole 10 by using the high-strength bolt, connecting the first friction plates with the first connecting plate, and fastening and fixing by using a nut; then 4 soft steel bars 6 are taken to sequentially pass through the B round hole 11, the B round hole 15 and the B round hole 11, and are fastened and fixed by nuts;
step S4: taking a high-strength bolt 5, sequentially penetrating through a c round hole of the first friction plate 3, a c round hole of the second friction plate 4, a c round hole of the first friction plate 3 'and a c round hole of the second friction plate 4' through the high-strength bolt, vertically connecting the first friction plate with the second friction plate, and tightly fastening and fixing the first friction plate and the second friction plate through nuts; and 4 soft steel rods 6 are taken, sequentially pass through the d round hole of the first friction plate 3, the d round hole of the second friction plate 4, the d round hole of the first friction plate 3 'and the d round hole of the second friction plate 4' through the soft steel rods, and are fastened and fixed by nuts.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
Meanwhile, if the above invention discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (5)
1. The method for assembling the soft steel friction composite damper is characterized by comprising a first connecting plate connected with a longitudinal building component and a second connecting plate connected with a horizontal building component, wherein the first connecting plate is fixedly connected with a first friction plate through a high-strength bolt, the second connecting plate is fixedly connected with a second friction plate through a high-strength bolt, the first friction plate is fixedly connected with the second friction plate through the high-strength bolt, and a penetrating soft steel rod is arranged at the joint of the first connecting plate and the first friction plate, the joint of the second connecting plate and the second friction plate and the joint of the first friction plate and the second friction plate;
the first connecting plate and the second connecting plate comprise bottom plates, the bottom plates are fixedly connected with webs perpendicular to the bottom plates, the bottom plates of the first connecting plates are connected with longitudinal building members through high-strength bolts, the bottom plates of the second connecting plates are connected with horizontal building members through high-strength bolts, one sides of the webs, which deviate from the bottom plates, are provided with mounting holes for passing through the high-strength bolts, the periphery of each mounting hole is provided with a plurality of round holes for allowing soft steel rods to pass through, the first friction plates and the second friction plates are provided with bolt holes corresponding to the mounting holes, and the first friction plates and the second friction plates are provided with steel rod holes which correspond to the round holes and have equal diameters;
the opposite ends of the first friction plate and the second friction plate are provided with mutually communicated bolt butt joint holes, and the periphery of each bolt butt joint hole is provided with a plurality of steel bar butt joint holes;
the first friction plate and the second friction plate are provided with a pair, the web plate of the first connecting plate is clamped between the pair of first friction plates, the web plate of the second connecting plate is clamped between the pair of second friction plates, and the pair of first friction plates and the pair of second friction plates are fixed in a staggered manner;
the method comprises the following specific steps:
step S1: the steel bar, the high-strength bolt and the screw cap are several in number;
step S2: fixing the first connecting plate and the longitudinal building member by using a high-strength bolt; fixing the second connecting plate and the horizontal building component by using a high-strength bolt; fixing the first connecting plate and the first friction plate by using a high-strength bolt, and fixing the second connecting plate and the second friction plate by using a high-strength bolt;
taking a soft steel rod, and passing through the joint of the first connecting plate and the first friction plate and the joint of the second connecting plate and the second friction plate;
step S3: the high-strength bolt fixedly connects the first friction plate with the second friction plate and penetrates through the first friction plate and the second friction plate by utilizing a soft steel rod.
2. The method of assembling a mild steel friction composite damper according to claim 1, wherein said circular bore and said steel rod bore are four.
3. The method of assembling a mild steel friction composite damper according to claim 1, wherein said first friction plate is connected at a 90 degree right angle to said second friction plate.
4. The method of assembling a mild steel friction composite damper according to claim 1, wherein said connecting plate and said friction plate are both made of carbon structural steel material, and said mild steel rod is a low yield point mild steel.
5. The method of assembling a mild steel friction composite damper according to claim 1, wherein stiffening ribs are secured between the bottom plates and the web plates of the first and second connection plates.
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