CN113027211B - Energy consumption device based on compressive yielding or buckling deformation control and working method - Google Patents
Energy consumption device based on compressive yielding or buckling deformation control and working method Download PDFInfo
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- CN113027211B CN113027211B CN202110286082.0A CN202110286082A CN113027211B CN 113027211 B CN113027211 B CN 113027211B CN 202110286082 A CN202110286082 A CN 202110286082A CN 113027211 B CN113027211 B CN 113027211B
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- 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
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- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
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Abstract
The invention relates to an energy consumption device based on compressive yielding or buckling deformation control and a working method, and belongs to the field of earthquake resistance of constructional engineering structures. The energy dissipation device comprises a shell, a piston arranged in the shell, a push-pull rod connected to one side of the piston and extending out of the shell, a reset mechanism connected to the other side of the piston, and thin steel sheets which are connected to two sides of the piston and used as energy dissipation elements; the end part of the thin steel sheet at one side of the piston is abutted against the shell, and the end part of the thin steel sheet at the other side of the piston is abutted against an upper limiting baffle fixedly connected in the shell; during earthquake, the thin steel sheet can be pressed to yield or bend so as to reduce the earthquake action input to the wooden frame, and the reset mechanism can generate tensile force or pressure to reset the thin steel sheet. The energy dissipation device is installed at the included angle of the connecting joint of the beam column of the wooden frame, and achieves the purposes of dissipating energy and damping, reducing the displacement of the side and preventing large deformation and even collapse. Each part is replaceable, and the processing, construction, installation and the like are simple; the material source is wide, the cost is low, and the method is suitable for wide popularization.
Description
Technical Field
The invention belongs to the field of earthquake resistance of constructional engineering structures, and relates to an energy consumption device based on compressive yielding or buckling deformation control and a working method.
Background
China is one of the most serious countries suffering from earthquake disasters in the world, and the earthquake-resistant urban area has the other characteristics of more earthquake times and wide distribution range, namely that earthquake-prone areas are just rural areas and towns with laggard economic development, and the earthquake damage of the structures is obviously higher than that of cities due to weak house construction measures, poor earthquake resistance, lack of professional design, construction guidance and the like in the areas, so that houses in villages and towns in China become the weakest link in earthquake-proof and disaster-reduction career. In order to reduce the loss of the country and the society in the earthquake, the research on the energy dissipation and shock absorption technology of the houses in the villages and small towns is of great significance.
The wooden frame is formed by connecting the wooden ring beams and the wooden constructional columns in a certain mode, has the advantages of enhancing the structural integrity, improving the structural earthquake resistance and the like, and is widely applied to the existing village and town building structures, such as a raw soil structure, a wooden frame-filled wall and the like. Under the action of an earthquake, the timber frame can be used as a second defense line after the wall fails, the collapse resistance of the timber frame is of great importance, and the collapse resistance of the timber frame is usually determined by the strength of beam-column connection nodes of the timber frame, so that the beam-column connection nodes of the timber frame are the more critical parts of the whole structure. The traditional connection mode of the beam-column connection node of the wooden framework mainly comprises tenon connection and nail-removing connection, the connection strength is limited, and the joint is easy to loosen; secondly, the construction difficulty is high and depends on the construction experience of workers; moreover, most structures have irrecoverability and non-replaceability, and do not conform to the concept of the shock absorption structure with the function recoverable advocated at present.
Disclosure of Invention
In view of the above, the present invention provides an energy dissipation device based on compressive yielding or buckling deformation control and a working method thereof, so as to solve the defects of the traditional connection mode of timber beam-column connection nodes.
In order to achieve the purpose, the invention provides the following technical scheme:
the energy consumption device based on the compression yield or buckling deformation control comprises a shell, a piston arranged in the shell, a push-pull rod connected to one side of the piston and extending out of the shell, a reset mechanism connected to the other side of the piston, and energy consumption elements connected to two sides of the piston; the energy dissipation element is a thin steel sheet, the end part of the thin steel sheet at one side of the piston is abutted against the shell, and the end part of the thin steel sheet at the other side of the piston is abutted against an upper limit baffle fixedly welded in the shell; during earthquake, the thin steel sheet can be pressed to yield or bend so as to reduce the earthquake action input to the timber frame, and the reset mechanism can generate tensile force or pressure to reset the thin steel sheet.
Further, the push-pull rod is welded to one side of the piston.
Furthermore, the thin steel plates on each side of the piston are symmetrically distributed relative to the push-pull rod.
Furthermore, one end of the thin steel sheet is clamped by a mounting seat, and the mounting seat is fixed on the piston.
Further, the upper limit baffle is welded in the shell.
Furthermore, the reset mechanism comprises a reset spring, one end of the reset spring is connected to a spring connecting piece fixedly connected to the piston, and the other end of the reset spring is connected to a spring connecting piece fixedly connected to the inner side of the shell; the spring connecting pieces at the two ends of the reset spring are respectively fixed on the piston and the shell through screws.
Further, the shell, the piston, the push-pull rod and the reset mechanism are arranged coaxially.
Further, the shell is made of steel and comprises a cylindrical shell and end covers which are detachably connected to two ends of the shell respectively; the two ends of the shell are provided with external threads, and the end covers are correspondingly provided with matched internal threads to be connected with the shell.
Furthermore, one end of the push-pull rod extending out of the shell is provided with a hinge so as to be hinged with a wood constructional column of the wood frame; the shell body at the end opposite to the push-pull rod is provided with a hinge to be hinged with the wooden ring beam of the wooden frame, so that the wooden frame energy dissipation node is formed.
The working method of the energy consumption device based on the compression yield or buckling deformation control is suitable for the energy consumption device and comprises the following steps:
s1, a push-pull rod of an energy consumption device is hinged with a timber structure column of a timber structure, a shell body at the opposite end of the push-pull rod is hinged with a timber ring beam of the timber structure, and therefore the energy consumption device is installed at the included angle of a connecting node of the timber structure beam column;
s2, according to a design target, when the energy consumption device is in a small earthquake, namely the interlayer displacement angle is 1/350, the thin steel sheet in the energy consumption device is not deformed, and the energy consumption device does not consume energy;
when the earthquake occurs, namely the interlayer displacement angle is 1/150, the included angle of the connecting node of the beam column of the wood frame is enlarged or reduced under the action of the earthquake, so that the push-pull rod moves to drive the piston, the thin steel sheet begins to be pressed to yield or bend, the plastic stage is started, and the energy consumption device begins to consume energy;
when the earthquake occurs, namely the interlayer displacement angle is 1/50, the thin steel sheet is pressed to yield or bend but does not reach the tensile strength of steel, so that the timber frame is prevented from collapsing in the whole earthquake action, and the timber frame is also ensured to have the vertical supporting effect in the earthquake;
and S3, after the earthquake is finished, the piston moves under the action of the reset mechanism, and the moving direction of the piston is opposite to that under the action of the earthquake, so that the thin steel sheet is reset.
Further, according to the Euler critical stress formula, the internal force of the energy consumption device under large vibration is still smaller than the Euler critical stress which enables the thin steel sheet to generate out-of-plane deformation, so that the thin steel sheet is ensured not to generate out-of-plane deformation, and the energy consumption under pressure yield is realized;
or the internal force of the energy consumption device under the middle earthquake is larger than or equal to the Euler critical stress by controlling the section size and the slenderness ratio of the thin steel sheet, so that the thin steel sheet is deformed out of a plane under the middle earthquake and the large earthquake, and the buckling energy consumption under pressure is realized.
The invention has the beneficial effects that:
1. the energy dissipation device disclosed by the invention is arranged at the included angle of the connecting joint of the beam column of the wooden framework, and the wooden ring beam and the wooden constructional column are fastened and connected by adopting steel clamping plates through fastening bolts, so that the relative slippage in the joint stress and deformation processes is prevented. The wooden ring beam clamping plates and the wooden constructional column clamping plates are connected at corners through hinges, and the rotating capacity of the wooden constructional column beam connecting joint can be guaranteed. Timber frame beam column connected node is the comparatively key part of whole structure, and timber frame's collapse resistance often depends on timber frame beam column connected node's power, sets up power consumption device to important and weak link department beam column connected node of timber frame, compares in traditional joggle, takes off nail connected node, can strengthen the intensity of node, has reduced the destroyed risk of node, has solved the problem that timber frame beam column connected node received the earthquake damage. Meanwhile, the traditional wood frame beam column joint connection mode is high in construction difficulty and relatively depends on construction experience of workers, the energy consumption device can be assembled, and is relatively simple in processing, construction, installation and the like, and is particularly suitable for remote village and town areas with low manual quality and shortage of technical strength.
2. The energy dissipation device disclosed by the invention is realized by means of the stage from the yield strength to the tensile strength of the thin steel plate as an energy dissipation element. Under the action of small earthquake, the energy dissipation device and the wooden framework form a frame structure with larger lateral rigidity resistance, the structure resists earthquake by self, the thin steel sheet does not yield, and the whole body is in an elastic state; under the action of a medium shock, the push-pull rod acts on the piston under an external force, and the piston moves to instantaneously drive the thin steel sheet to act on the upper limiting baffle plate to be pressed and begin to yield or buckle; under the action of a large earthquake, the thin steel sheet does not reach the tensile strength, so that the energy consumption device can play an energy consumption role under the action of the whole earthquake, and the wood framework is prevented from being deformed greatly and even collapsing. Meanwhile, the lateral bearing capacity of the wooden frame can be improved, the lateral displacement of the wooden frame is effectively reduced, the natural vibration period of the wooden frame is prolonged, and the purposes of energy dissipation, shock absorption and structural seismic performance improvement are achieved.
3. The energy consumption device disclosed by the invention has replaceability, and after the thin steel sheet of the energy consumption element loses energy consumption capacity, a new energy consumption element can be replaced, so that the coming of next sudden earthquake can be prevented.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of an energy consuming device according to the present invention;
FIG. 2 is a view I-I of FIG. 1;
fig. 3 is a schematic view of the installation of the energy consuming device of the present invention.
Reference numerals: wooden constructional column 1, wooden constructional column clamping plate 2, wooden ring beam 3, wooden ring beam clamping plate 4, hinge 5, hinge 6, bolt 7, energy consumption device 8, hinge 801, push-pull rod 802, lower end cover 803, mounting seat 804, thin steel sheet 805, shell 806, piston 807, screw 808, upper limiting baffle 809, spring connecting piece 810, return spring 811, upper end cover 812 and hinge 813.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, an energy dissipation device 8 based on compressive yielding or buckling deformation control is disclosed, wherein the energy dissipation device 8 includes a housing made of steel and composed of a cylindrical outer shell 806, an upper end cap 812 and a lower end cap 803; the upper end and the lower end of the housing 806 are respectively provided with external threads, and the upper end cover 812 and the lower end cover 803 are correspondingly provided with matched internal threads for connecting the upper end and the lower end of the housing 806. The axis position outside the upper end cover 812 is provided with a hinge 813 to hinge with the wooden collar 3 of the wooden frame.
A circular piston 807 is arranged in the outer shell 806, which is coaxial with the piston, the lower side of the piston 807 is vertically welded with one end of a push-pull rod 802, which is coaxial with the piston, the other end of the push-pull rod 802 extends out of the shell through a preformed hole arranged on the axis of the lower end cover 803, and the end is also provided with a hinge 801 to be hinged with the wood constructional column 1 of the wood frame.
The upper side of the piston 807 is provided with a reset mechanism coaxial with the piston, the reset mechanism comprises a reset spring 811, two ends of the reset spring 811 are respectively connected with spring connectors 810, and the two spring connectors 810 are respectively fixed on the upper side of the piston 807 and the inner side of an upper end cover 812 through four uniformly distributed screws 808.
Two axisymmetrically distributed dissipative elements, in this embodiment, thin steel plates 805 are connected to the upper and lower sides of the piston 807, respectively. One end of the thin steel plate 805 is clamped by an installation base 804, the installation base 804 is composed of two angle steels arranged back to back, one end of the thin steel plate 805 is inserted between the two angle steels and fastened through a bolt vertically penetrating through the angle steels and the thin steel plate 805, and the two angle steels are fixed on the piston 807 through the bolt. The other end of the thin steel plate 805 on the lower side of the piston 807 abuts against the lower end cover 803, the other end of the thin steel plate 805 on the upper side of the piston 807 abuts against an upper limit baffle 809 welded in the housing 806, and the lower end cover 803 also functions as the upper limit baffle 809. The axis of the upper limit baffle 809 is provided with a through hole for the return spring 811 to pass through, so as to avoid interference. The lower end cap 803 corresponds to a lower limit baffle, and like the upper limit baffle 809, can limit the thin steel sheet 805 to cause the thin steel sheet 805 to yield or buckle under pressure.
As shown in fig. 3, a working method of an energy consuming device based on the compressive yielding or buckling deformation control adopts the energy consuming device 8 provided in this embodiment. Wherein, wooden collar tie beam 3 and wooden constructional column 1 adopt wooden collar tie beam splint 4 and wooden constructional column splint 2 respectively and carry out fastening connection through bolt 7, prevent that timber frame beam column connected node atress and deformation in-process from taking place relative slip. The wooden ring beam clamp plate 4 and the wooden constructional column clamp plate 2 at the beam-column connection node of the wooden frame are connected by the hinge 5 and the hinge 6 respectively, so that the rotation capacity of the beam-column connection node of the wooden frame is ensured.
The working method comprises the following steps:
s1, a push-pull rod 802 of an energy consumption device 8 is hinged with a wood structure column 1 of a wood frame, an upper end cover 812 is hinged with a wood ring beam 3 of the wood frame, and therefore the energy consumption device 8 is installed at an included angle of a beam-column connecting node of the wood frame;
s2, according to a design target, when the energy consumption device 8 is in a small earthquake, namely the interlayer displacement angle is 1/350, the thin steel sheet 805 in the energy consumption device 8 is not deformed, and the energy consumption device 8 does not consume energy;
when the earthquake occurs, namely the interlayer displacement angle is 1/150, the included angle of the connecting node of the beam column of the wood frame is increased or decreased under the action of the earthquake, so that the push-pull rod 802 moves to drive the piston 807, the thin steel sheet 805 begins to be pressed, buckled or buckled, the plastic stage is started, and the energy consumption device 8 begins to consume energy;
when the earthquake occurs, namely the interlayer displacement angle is 1/50, the thin steel sheet 805 is pressed to yield or bend but does not reach the tensile strength of steel, so that the timber frame is prevented from collapsing in the whole earthquake action, and the timber frame is also ensured to have the vertical supporting function in the earthquake;
and S3, after the earthquake is ended, the piston 807 moves under the action of elastic force provided by the return spring 811, and the moving direction of the piston is opposite to that of the piston under the action of the earthquake, so that the thin steel sheet 805 is quickly reset.
In order to realize the energy consumption of the thin steel sheet 805 under the compressive yielding, according to the euler critical stress formula, the internal force of the energy consumption device 8 under the large shock is still smaller than the euler critical stress which enables the thin steel sheet 805 to generate out-of-plane deformation, so that the thin steel sheet 805 is ensured not to generate out-of-plane deformation, and the energy consumption of the compressive yielding is realized.
If the thin steel sheet 805 needs to be subjected to compression buckling energy consumption, the cross section size and the slenderness ratio of the thin steel sheet 805 are controlled, so that the internal force of the energy consumption device 8 under a middle earthquake is larger than or equal to the Euler critical stress, the thin steel sheet 805 is subjected to out-of-plane deformation under the middle earthquake and a large earthquake, and the compression buckling energy consumption is realized.
Each part of the energy consumption device 8 is replaceable, and the processing, construction, installation and the like are simple; the material source is wide, the manufacturing cost is low, and the method is relatively suitable for rural areas with laggard economy.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. Energy consumption device based on under-pressure yield or buckling deformation control, its characterized in that: the energy-consuming device comprises a shell, a piston arranged in the shell, a push-pull rod connected to one side of the piston and extending out of the shell, a reset mechanism connected to the other side of the piston, and energy-consuming elements connected to two sides of the piston; the energy dissipation element is a thin steel sheet, the end part of the thin steel sheet at one side of the piston is abutted against the shell, and the end part of the thin steel sheet at the other side of the piston is abutted against an upper limiting baffle fixedly connected in the shell; the thin steel sheets on each side of the piston are symmetrically distributed relative to the push-pull rod; the shell, the piston, the push-pull rod and the reset mechanism are coaxially arranged; one end of the push-pull rod, which extends out of the shell, is provided with a hinge so as to be hinged with a wood structure column of the wood frame; the shell body at the end opposite to the push-pull rod is provided with a hinge to be hinged with a wooden ring beam of the wooden frame, so that an energy consumption node of the wooden frame is formed; during earthquake, the thin steel sheet can be pressed to yield or bend so as to reduce the earthquake action input to the wooden frame, and the reset mechanism can generate tensile force or pressure to reset the thin steel sheet.
2. The energy consumption device based on the compressive yielding or buckling deformation control as claimed in claim 1, wherein: one end of the thin steel sheet is clamped by a mounting seat, and the mounting seat is fixed on the piston.
3. The energy consumption device based on the compressive yielding or buckling deformation control as claimed in claim 1, wherein: the upper limiting baffle is welded in the shell.
4. The energy consumption device based on the compressive yielding or buckling deformation control as claimed in claim 1, wherein: the reset mechanism comprises a reset spring, one end of the reset spring is connected to a spring connecting piece fixedly connected to the piston, and the other end of the reset spring is connected to a spring connecting piece fixedly connected to the inner side of the shell; the spring connecting pieces at the two ends of the reset spring are respectively fixed on the piston and the shell through screws.
5. The energy consumption device based on the compressive yielding or buckling deformation control as claimed in claim 1, wherein: the shell is made of steel and comprises a cylindrical shell and end covers which are detachably connected to two ends of the shell respectively; the two ends of the shell are provided with external threads, and the end cover is correspondingly provided with adaptive internal threads for connecting the shell.
6. A working method of an energy consumption device based on compressive yielding or buckling deformation control is suitable for the energy consumption device of any one of claims 1 to 5, and is characterized in that: the method comprises the following steps:
s1, a push-pull rod of an energy consumption device is hinged with a timber structure column of a timber structure, a shell body at the opposite end of the push-pull rod is hinged with a wooden ring beam of the timber structure, and therefore the energy consumption device is installed at the included angle of the beam-column connection node of the timber structure;
s2, according to a design target, when the energy consumption device is in a small earthquake, namely the interlayer displacement angle is 1/350, the thin steel sheet in the energy consumption device is not deformed, and the energy consumption device does not consume energy;
when the earthquake occurs, namely the interlayer displacement angle is 1/150, the included angle of the connecting node of the beam column of the wood frame is enlarged or reduced under the action of the earthquake, so that the push-pull rod moves to drive the piston, the thin steel sheet begins to be pressed to yield or bend, the plastic stage is started, and the energy consumption device begins to consume energy;
when the earthquake occurs, namely the interlayer displacement angle is 1/50, the thin steel sheet is pressed to yield or bend but does not reach the tensile strength of steel, so that the timber frame is prevented from collapsing in the whole earthquake action, and the timber frame is also ensured to have the vertical supporting effect in the earthquake;
and S3, after the earthquake is finished, the piston moves under the action of the reset mechanism, and the moving direction of the piston is opposite to that under the action of the earthquake, so that the thin steel sheet is reset.
7. The working method of the energy consumption device based on the compressive yielding or buckling deformation control as claimed in claim 6, wherein: according to the Euler critical stress formula, the internal force of the energy consumption device under large vibration is still smaller than the Euler critical stress which enables the thin steel sheet to generate out-of-plane deformation, so that the thin steel sheet is ensured not to generate out-of-plane deformation, and the yield energy consumption under pressure is realized;
or the cross section size and the slenderness ratio of the thin steel sheet are controlled, so that the internal force of the energy consumption device under the middle earthquake is larger than or equal to the Euler critical stress, the thin steel sheet is subjected to out-of-plane deformation under the middle earthquake and the large earthquake, and the buckling energy consumption under the compression is realized.
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| JP3772499B2 (en) * | 1997-11-13 | 2006-05-10 | オイレス工業株式会社 | Lock mechanism for seismic isolation bearing and seismic isolation support device using the same |
| CN203926580U (en) * | 2014-06-17 | 2014-11-05 | 常州容大结构减振设备有限公司 | A kind of string assisting vehicle structure that possesses antivibration function |
| CN104153481B (en) * | 2014-08-27 | 2017-01-25 | 广州大学 | Squeezing damper device |
| JP6613443B1 (en) * | 2019-03-19 | 2019-12-04 | 黒沢建設株式会社 | Spring-type damping damper |
| CN110714546A (en) * | 2019-11-04 | 2020-01-21 | 上海市建筑科学研究院 | Self-adaptive buckling-restrained brace |
| CN111441494A (en) * | 2020-04-20 | 2020-07-24 | 南京工业大学 | Pore type viscous damper |
| CN214784942U (en) * | 2021-03-17 | 2021-11-19 | 石河子大学 | Energy consumption device based on compressive yielding or buckling deformation control |
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