CN212105324U - Assembled soft collision energy consumption device and damping energy consumption system - Google Patents

Abstract

The utility model discloses an assembled soft collision energy dissipation device and a damping energy dissipation system; the assembled soft collision energy dissipation device comprises a buckling restrained brace consisting of a restraining material, a middle core material and a buffer layer; the buckling restrained brace is arranged on the concrete base through the bearing plate and forms a damping and energy dissipation system together with the base shock insulation structure. The utility model discloses a soft collision energy consumption device of assembled has the ability of very strong buffer structure displacement, can prevent that basic shock insulation structure from taking place the rigidity collision with retaining wall under near field velocity pulse type ground vibrations effect, and then has avoided the harm to upper portion building structure. After the impact is finished, the buckling restrained brace and the bearing plate of the energy dissipation device can be detachably repaired or replaced. The utility model provides the recoverability of building structure under the earthquake effect.

Description

Assembled soft collision energy consumption device and damping energy consumption system

Technical Field

The utility model belongs to the building field, concretely relates to assembled soft collision energy consumption device and shock attenuation energy consumption system.

Background

According to the recent earthquake disaster phenomenon, under the action of near-fault velocity pulse type earthquake motion, the shock insulation building can generate overlarge displacement response to violently collide with a retaining wall or other limit structures, so that the upper building structure is damaged. In the prior art, between shock insulation building and retaining wall or other limit structure to there is not detachable bradyseism device.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, an object of the utility model is to provide a soft collision energy consumption device of assembled when shock insulation building structure takes place the striking with limit structure, plays buffering power consumption and guard action to can realize dismantling the change after the striking is accomplished, with the recoverability that promotes building structure under the earthquake disaster effect.

The utility model discloses a following technical scheme:

an assembled soft collision energy dissipating device comprising:

the buckling restrained brace is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end is used for being in contact with the shock insulation bottom plate, the second connecting end is used for being fixed on the concrete base to support the buckling restrained brace, and the third connecting end is used for being connected with the concrete base to serve as a force bearing end in the horizontal direction;

and the bearing bottom plate is used for connecting the third connecting end with the concrete base.

According to the utility model discloses a concrete scheme of assembled soft collision power consumption device, the bucking restraint is supported and is included:

the restraint material comprises a hard sleeve, and concrete is filled in the hard sleeve;

the middle core material is used for bearing axial force, is arranged in the hard sleeve, and two ends of the middle core material extend out of the sleeve, one end of the middle core material is a first connecting end and is fixedly provided with a contact plate, and the other end of the middle core material is a third connecting end and is connected with the bearing bottom plate;

and the buffer layer is arranged between the middle core material and the hard sleeve.

The middle core material and the constraint material are connected into a whole, and only the middle core material bears axial force; the buffer layer forms circumferential buffer on the middle core material; the constraint material forms rigid constraint and support for the middle core material.

According to the utility model discloses a concrete scheme of assembled soft collision power consumption device, first link with set up horizontal stiffening rib and vertical stiffening rib between middle core main shaft, enlarge the contact surface, and the part vertical stiffening rib buries among the restraint material, strengthen the power transmission of first link improves stability.

According to the utility model discloses a concrete scheme of assembled soft collision power consumption device, the third link with set up horizontal stiffening rib and vertical stiffening rib between middle core main shaft, enlarge the contact surface, strengthen the power transmission of third link improves stability.

The utility model discloses still include a shock attenuation power consumption system, shock attenuation power consumption system includes:

the assembled soft collision energy dissipation device;

a base isolation structure having an isolation floor;

the concrete base is a concrete block with a horizontal mounting surface, the horizontal mounting surface is provided with an upwardly arched mounting platform, and the mounting platform is provided with a vertical mounting surface;

the second connecting end of the buckling restrained brace is fixed on the horizontal mounting surface by using a mounting connecting piece;

one plate surface of the bearing bottom plate is connected with the third connecting end, and the other plate surface is fixed on the vertical mounting surface;

according to the utility model discloses a concrete scheme of shock attenuation energy consumption system, fixed back the bucking restraint support with the shock insulation bottom plate has same height and is a straight line, guarantees positive load and promotes the homogeneity of load, full play bucking restraint support's bradyseism effect.

According to a specific scheme of the damping and energy-consuming system of the utility model, the damping and energy-consuming system further comprises a plurality of through long pull rods which are fixed in the concrete base; the lower end face of the bearing bottom plate is embedded into the concrete base through the horizontal mounting face, and the through long pull rod penetrates through the bearing bottom plate and the concrete base. Through the arrangement of the through long pull rod, a tighter whole is formed between the buckling restrained brace, the bearing bottom plate and the concrete base, and the compression resistance and the stability are further improved.

According to the utility model discloses a concrete scheme of shock attenuation energy consumption system, erection joint spare is equilateral angle steel, equilateral angle steel one side with the bucking restraint is supported stereoplasm muffjoint is fixed, the opposite side with the concrete foundation is connected fixedly.

According to the utility model discloses a concrete scheme of shock attenuation energy consumption system, the angle steel that waits has set up stiffening rib, improves additional anti side rigidity, strengthens firm effect.

According to the utility model discloses a concrete scheme of shock attenuation energy consumption system, the embedding of the vertical stiffening rib of part of bearing bottom plate concrete base extremely the bottom of bearing bottom plate, the lower terminal surface of the vertical stiffening rib of part of embedding with bearing bottom plate's bottom is at same level.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

1. when the building shock insulation layer and the assembled soft collision energy consumption device disclosed by the invention are impacted, the core material of the buckling restrained support is contacted with the shock insulation layer of the building structure, and the displacement of the shock insulation layer of the building structure can be limited to a certain extent by means of the compressive design strength of the core material and the provided additional lateral stiffness, so that the shock insulation support is prevented from being damaged due to excessive deformation of the shock insulation layer, and the damage of an upper structure due to rigid collision between the shock insulation layer and a retaining wall is avoided.

2. The core material of the buckling restrained brace has good ductility and axial stress-deformation energy dissipation capacity, so that when a building seismic isolation layer collides with an energy dissipation device, the kinetic energy input by the building structure due to a velocity pulse type earthquake can be consumed to a certain extent through the axial deformation of the core material, so that the displacement response of the seismic isolation layer is reduced, and the effects of shock absorption and energy dissipation are achieved.

3. After the earthquake impact is finished, the assembled collision energy dissipation device can be detached, maintained or directly replaced, so that the restorability of the building structure is improved, mechanical design parameters of the assembled collision energy dissipation device required by buildings with similar structural properties are likely to be relatively close, and batch production can be realized in a factory so as to save the construction time and cost of the seismic isolation building.

Drawings

In order to more clearly illustrate the technical solution of the mode of the invention, the drawings that are required to be used in the embodiment are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the invention, and are not to be considered as limiting the scope, and that for a person skilled in the art, other relevant drawings can be obtained from these drawings without inventive effort.

FIG. 1 is an isometric view of an assembled soft crash energy dissipating device;

FIG. 2 is a front view of an assembled soft impact energy dissipating device;

FIG. 3 is a top plan view of an assembled soft impact dissipation device;

FIG. 4 is a side view of an assembled soft impact energy dissipating device;

FIG. 5 is a schematic view of the installation of the fabricated soft collision energy dissipation device;

FIG. 6 is a top acceleration response time course curve of example 2;

FIG. 7 is a graph showing the time course of displacement of the seismic isolation layer in example 2;

FIG. 8 is a time course of the collision force of example 2;

FIG. 9 is a time course of the bottom layer displacement of the upper structure of example 2;

FIG. 10 is a maximum absolute acceleration curve of the upper structure of embodiment 2;

FIG. 11 is a graph of the maximum interlayer displacement of the superstructure of example 2;

the figure illustrates 100-concrete foundation, 101-through long steel tie rod, 102-steel tie rod backing plate, 200-buckling restrained brace, 201-contact end steel plate core material, 202-first transverse stiffening rib, 203-first longitudinal stiffening rib, 204-equilateral angle steel, 205-constraint material, 206-triangular stiffening rib, 207-first bolt, 208-middle core material, 209-second longitudinal stiffening rib, 211-second connecting end, 221-third connecting end, 300-bearing bottom plate, 301-third longitudinal stiffening rib, 302-second transverse stiffening rib and 303-second bolt.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Example 1

The embodiment provides a fabricated soft collision energy dissipation device, as shown in fig. 1 to 4, including:

the buckling-restrained brace 200 comprises a restraining material 205 and a middle core material 208, wherein the restraining material 205 can be selected from a steel sleeve or other hard material sleeves, the material of the steel sleeve includes but is not limited to carbon steel such as Q235 or Q345, concrete is filled in the sleeve, and the bottom surface of the restraining material 205 is a second connecting end 211; the material of the middle core material 208 can be LY225, LY160 or other low-yield-strength steel, the middle core material 208 is installed in the constraint material 205, two ends of the middle core material extend out of the sleeve, one end of the middle core material 208 is a first connecting end 201 and is fixedly provided with a contact plate, the contact plate is made of a steel plate core material, and the other end of the middle core material 208 is a third connecting end 221; a buffer layer is filled between the middle core material 208 and the restraint material 205, the material of the buffer layer includes but is not limited to polyethylene, rubber, silica gel and other materials, after the buffer layer is filled, the middle core material 208 and the restraint material 205 form a whole, and only the middle core material bears axial force;

the device further comprises a supporting base plate 300 connected with the buckling restrained brace and used for connecting the buckling restrained brace 200 with the concrete base 100.

In a preferred embodiment of the present invention, the length of the intermediate core 208 extending out of the constraint material 205 on the side of the first connection end 201 is preferably 260mm, and the contact surface between the first connection end 201 and the intermediate core 208 is enlarged by the first transverse stiffener 202 and the first longitudinal stiffener 203; and the second longitudinal stiffening rib 209 extends from the first connecting end 201 and is embedded into the constraint material 205 by a certain length, preferably 50mm, so that the stability of the first connecting end is improved, and the shock insulation bottom plate is convenient to contact with the buckling constraint support 200.

In a preferred embodiment of this embodiment, when the second connecting end 211 of the buckling-restrained brace 200 is connected to the supporting base plate 300, the length of the middle core 208 of the buckling-restrained brace 200 extending out of the restraining material 205 is preferably 150mm, and the middle core is welded to the supporting base plate 300 to form a fixed connection, and at the same time, the second transverse stiffener 302 and the third longitudinal stiffener 301 are provided to reinforce the transmission of force, and part of the third longitudinal stiffener 301 penetrates through the bottom of the supporting base plate 300 at the same level as the bottom of the supporting base plate 300.

Example 2

The embodiment provides a damping and energy dissipating device, as shown in fig. 1 to 5, including:

the base isolation structure is used as a common arrangement of buildings in the prior art, is supported and arranged in an isolation trench by an isolation support, and the lower part of a base isolation structure main body is provided with an isolation bottom plate;

the concrete bases 100 are respectively arranged on two sides of the base isolation structure, optionally, the concrete bases 100 are made of concrete with the strength grade of C35 and are provided with horizontal installation surfaces, upward arched installation platforms are arranged on the horizontal installation surfaces, and the installation platforms are provided with vertical installation surfaces;

the fabricated soft collision energy dissipation device in embodiment 1 fixes the second connection end 211 of the buckling restrained brace on the horizontal installation surface of the concrete foundation 100 through the installation connection member. The buckling restrained brace is detachably mounted on the concrete base 100 through the mounting connecting piece, and later-stage maintenance and replacement are facilitated. Specifically, in the present embodiment, the constraint material 205 of the buckling constraint support is fixed on the horizontal installation surface of the concrete foundation 100 through the equal angle steel 204 at two sides, the equal angle steel 204 is connected with the constraint material 205 and the concrete foundation 100 through the first bolt 207, and alternatively, the first bolt 207 may be an M20 bolt. In a preferred embodiment of the present embodiment, 4 triangular stiffeners 206 are also provided on each side of the equilateral angles 204 to increase additional stiffness against lateral movement. The bearing bottom plate 300 is made of prefabricated perforated steel plates, and the upper part of the bearing bottom plate 300 is connected with a vertical mounting surface of the concrete base 100 through a second bolt 303.

In a preferred embodiment of this embodiment, the lower part of the supporting base plate 300 is embedded in the concrete base 100. The through-length steel pull rod 101 penetrates through the embedded part of the bearing bottom plate and the concrete base, and two ends of the through-length steel pull rod 101 are fixed on a steel pull rod base plate 102 of the concrete base 100 through bolts. Optionally, the number of the full-length steel pull rods 101 is 8 and the specification is Φ 25. Through the arrangement of the through long steel pull rod, a tighter whole is formed among the buckling restrained brace, the bearing bottom plate and the concrete base, and the compression resistance and the stability are further improved.

In a preferred scheme of the embodiment, the fixed buckling restrained brace and the seismic isolation base plate have the same height and are in a straight line.

The shock attenuation energy consumption system of this embodiment is when implementing, when building shock insulation layer and energy consumption device take place the striking, the core through bucking restraint support is in contact with building structure's shock insulation layer, rely on the compressive design intensity of core self and the additional anti side rigidity that provides, can restrict building structure's shock insulation layer's displacement to a certain extent, prevent the too big deformation of production on shock insulation layer and lead to the shock insulation support to damage, avoid shock insulation layer and retaining wall to take place the rigidity collision and lead to superstructure to destroy. As the core material of the buckling restrained brace has good ductility and axial stress-deformation energy dissipation capacity, when the building seismic isolation layer collides with the energy dissipation device, the kinetic energy input by the building structure due to the velocity pulse type earthquake can be consumed to a certain extent through the axial deformation of the core material, so that the displacement response of the seismic isolation layer is reduced, and the effects of shock absorption and energy dissipation are achieved.

The damping and energy-consuming device of the embodiment is applied to a specific engineering example, a 5-layer basic shock insulation structure is taken as an engineering calculation example, the mass and the rigidity of the structure are uniformly distributed along the height, and specific parameters are shown in table 1.

TABLE 1 structural Attribute parameters

The interlayer restoring force model and the seismic isolation layer restoring force model of the basic seismic isolation structure both adopt elastic-plastic models (Bouc-wen models), and the mass of each floor is assumed to be concentrated at the floor slab and the compression deformation is not considered. The near-field velocity pulse type earthquake motion is obtained by an ARCELIK station in KOCAELI earthquake of Turkey in 1999, and the earthquake motion is loaded after the peak acceleration PGA is 149.9gal amplitude-modulated to 0.4g (g is gravity acceleration).

According to whether the shock insulation structure collides or not and the type of collision, the following 3 conditions are considered: (1) no collision: under the conditions that the width of the shock insulation groove is enough and the shock insulation support does not generate instability, the shock insulation structure can freely move; (2) in the hard collision (namely, the assembled soft collision energy dissipation device is not installed), the distance from the edge of the base shock insulation structure to the mixed retaining wall or the foundation pit is taken to be 0.25m, the rigidity of the surrounding retaining wall or the foundation pit is extremely high, and the displacement of the shock insulation structure is limited; (3) soft collision: the concrete base which is integrally or respectively constructed and formed is installed at the position, close to the retaining wall or the foundation pit, of the shock insulation ditch, the assembly type soft collision energy dissipation device is installed on the concrete base by adopting the method of the embodiment 2, the distance between the assembly type soft collision energy dissipation device and the base shock insulation structure is 0.15m, the device restoring force model adopts an elastic-plastic model (Bouc-wen model), and the parameters are shown in the table 1.

The power time-course response of the 3 conditions is detailed in the attached figures 6-11 of the specification, and the working form and characteristics of the energy consumption device are explored by analyzing different working conditions of the shock insulation structure.

As can be seen from fig. 6 and 7, in the base-isolated structure without collision or soft collision, the maximum absolute acceleration of the top layer of the upper structure is greatly reduced when the collision is hard, but the difference of the maximum displacement of the isolated layers is relatively small. The displacement peak value of the shock insulation layer without collision is about 0.58m and exceeds the reserved width of the shock insulation ditch, and the structure can collide; the maximum displacement of the shock insulation layer corresponding to the hard collision and the soft collision is about 0.3m and 0.35m, the difference is not large, and the functions of limiting the displacement and reducing the dynamic response of the energy consumption device are embodied to a certain extent. As can be seen from fig. 8 and 9 in combination with fig. 7, the maximum displacement of the seismic isolation layer in the soft collision is increased by about 16.7% compared with the hard collision, but the collision force between the seismic isolation layer and the surrounding retaining wall or foundation pit is greatly reduced, and the amplitude of the peak value reduction of the displacement between the upper structural bottom layers is very obvious and is closer to no collision. The good performance of the energy consumption device in shock insulation and shock absorption is further demonstrated, the displacement of a shock insulation layer can be restrained, and the dynamic response of the structure is reduced.

Fig. 10 and 11 are graphs of the maximum absolute acceleration and the maximum floor displacement of the superstructure along the floor in the three operating conditions described above, respectively. Under the condition of hard collision, the maximum absolute acceleration and the maximum interlayer displacement of the upper structure are far greater than those of no collision or soft collision; the superstructure dynamic response for soft crashes is improved compared to no crash, but the magnitude of the improvement is limited.

Meanwhile, as can be seen from the above, the shock insulation structure without collision is likely to generate hard collision due to overlarge displacement, and the energy consumption device converts the hard collision into soft collision, so that the function of limiting the displacement of the shock insulation layer is realized, the possibility of damaging the shock insulation and damping functions of the structure is reduced, and the early expected effect of designing the energy consumption device is achieved.

By taking the basic shock insulation structure with 5 layers as an example, the dynamic response of the structure when in soft collision is correspondingly analyzed, so that the maximum displacement of the shock insulation layer can be reduced by comparing the soft collision without collision condition, and the dynamic time-course response of the upper structure can be effectively reduced by comparing the soft collision with the hard collision condition. Therefore, the utility model provides a soft collision energy consumption device of assembled can restrict the displacement of shock insulation layer, reduces superstructure's time-course dynamic response, belongs to the shock insulation damping device that the effect is excellent.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An assembled soft collision energy dissipating device, comprising:

the buckling restrained brace is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end is used for being in contact with the shock insulation bottom plate, the second connecting end is used for being fixed on the concrete base to support the buckling restrained brace, and the third connecting end is used for being connected with the concrete base to serve as a force bearing end in the horizontal direction;

and the bearing bottom plate is used for connecting the third connecting end with the concrete base.

2. The fabricated soft collision energy dissipating device according to claim 1, wherein the buckling restrained brace comprises:

the restraint material comprises a hard sleeve, and concrete is filled in the hard sleeve;

the middle core material is used for bearing axial force, is arranged in the hard sleeve, and two ends of the middle core material extend out of the sleeve, one end of the middle core material is a first connecting end and is fixedly provided with a contact plate, and the other end of the middle core material is a third connecting end and is connected with the bearing bottom plate;

and the buffer layer is arranged between the middle core material and the hard sleeve.

3. The fabricated soft collision energy dissipation device according to claim 2, wherein a transverse stiffener and a longitudinal stiffener are disposed between the first connection end and the central core main shaft, and the longitudinal stiffener is embedded in the constraining material.

4. The fabricated soft collision energy dissipating device according to claim 2, wherein a transverse stiffener and a longitudinal stiffener are disposed between the third connecting end and the central core main shaft.

5. A shock-absorbing and energy-dissipating system comprising the fabricated soft collision energy-dissipating device as claimed in any one of claims 1 to 4, comprising:

a base isolation structure having an isolation floor;

the concrete base is a concrete block with a horizontal mounting surface, the horizontal mounting surface is provided with an upwardly arched mounting platform, and the mounting platform is provided with a vertical mounting surface;

the second connecting end of the buckling restrained brace is fixed on the horizontal mounting surface by using a mounting connecting piece;

one plate surface of the bearing bottom plate is connected with the third connecting end, and the other plate surface is fixed on the vertical mounting surface.

6. The system for absorbing and dissipating energy of claim 5, wherein the fixed buckling restrained brace and the seismic isolation base plate have the same height and are in a straight line.

7. The shock and energy absorbing system of claim 5, further comprising a plurality of through-length tension rods fixed in said concrete base;

the lower end face of the bearing bottom plate is embedded into the concrete base through the horizontal mounting face, and the through long pull rod penetrates through the bearing bottom plate and the concrete base.

8. The shock and energy dissipation system of claim 5, wherein the installation connecting piece is an equilateral angle steel, one side of the equilateral angle steel is fixedly connected with the hard sleeve of the buckling restrained brace, and the other side of the equilateral angle steel is fixedly connected with the concrete base.

9. The system of claim 8, wherein the angle steel is provided with stiffening ribs.

10. The system of claim 5, wherein some of the longitudinal stiffening ribs of the support base plate are embedded in the concrete base to the bottom of the support base plate, and the lower end surfaces of the embedded longitudinal stiffening ribs are at the same level as the bottom of the support base plate.

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