Fabricated prestressed concrete core slab reinforcing and energy-consuming connecting structure

Abstract

The invention provides an assembly type prestressed concrete hollow slab reinforcing energy consumption connecting structure, and relates to the field of concrete connecting members, the assembly type prestressed concrete hollow slab reinforcing energy consumption connecting structure connects a beam body and a concrete hollow slab together, and comprises a reinforcing energy consumption cylinder core and a shape memory metal connecting sheet, the reinforced energy-consuming cylinder core is arranged at the bottom of the shape memory metal connecting piece, the shape memory metal connecting piece is arranged on the upper surface of the concrete hollow slab, and the reinforced energy-consuming cylinder core extends into a hole of the concrete hollow slab. The fabricated prestressed concrete hollow slab reinforcing energy consumption connecting structure is composed of a reinforcing energy consumption cylinder core 3 and a shape memory metal connecting piece 4, the reinforcing energy consumption cylinder core 3 is provided with a friction damper 33, the effect of earthquake energy consumption is achieved, the node bearing performance is improved, the structural shock resistance is further improved, and the overall safety performance is improved; the integrity of building components is improved, and the probability of falling of the concrete hollow slabs 2 is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete connection components, and particularly to a reinforced energy-dissipating connection structure for precast prestressed concrete hollow slabs. Background Technique

[0002] Prefabricated buildings are a new type of building method, which has the advantages of simple construction, high operation efficiency, little construction pollution, and low construction cost. This makes the prefabricated building technology more and more popular in the construction industry.

[0003] Prestressed concrete hollow slabs are the main components in prefabricated buildings. However, the structure of traditional connection components is relatively simple. Under the action of an earthquake, there is a risk that the precast hollow slabs placed on the structural beams will fall due to excessive displacement, posing a great threat to the safety of the structure and the internal personnel. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a reinforced energy-dissipating connection structure for precast prestressed concrete hollow slabs, which solves the problems raised in the above background technique.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A reinforced energy-dissipating connection structure for precast prestressed concrete hollow slabs connects the beam body and the concrete hollow slab together, including a reinforced energy-dissipating core tube and a shape memory metal connection piece. The reinforced energy-dissipating core tube is placed at the bottom of the shape memory metal connection piece, and the shape memory metal connection piece is arranged on the upper surface of the concrete hollow slab. The reinforced energy-dissipating core tube extends into the holes of the concrete hollow slab. The top of the shape memory metal connection piece is connected with multiple pairs of bolts. One pair of bolts passes through the shape memory metal connection piece and is threadedly connected to the beam body, and the other pair of bolts penetrates the beam body, extends into the holes of the concrete hollow slab, and is threadedly connected to the reinforced energy-dissipating core tube.

[0008] The reinforced energy-dissipating core tube consists of a steel bracket, a core tube section, a friction damper, and an anchoring node. The upper end of the steel bracket is threadedly connected to the shape memory metal connection piece through bolts, the lower end of the steel bracket is connected to the core tube section, the right side of the core tube section is connected to the friction damper, the right end of the friction damper is connected to the anchoring node, and the top of the anchoring node is used to connect with the bolts.

[0009] It also includes an auxiliary reinforcement component, and a sensor is provided on the auxiliary reinforcement component. The sensor is used to sense the vibration degree of the beam body, and the sensor is a sound wave collection module.

[0010] A small chamber is provided inside the core tube section. A sphere is suspended by a thin iron chain at the top of the inner wall of the chamber. Strip blocks are symmetrically arranged on both sides of the inner wall of the chamber. A small spring is connected to the side of the strip block facing the sphere. The lower end of the small spring is connected to a percussion piece. During the vibration process, the sphere sways and impacts the percussion piece, causing the percussion piece to strike the strip block.

[0011] Preferably, the auxiliary reinforcement component is arranged at the end of the beam body. The auxiliary reinforcement component includes a base, a plurality of sliding rods, a sliding rail, and a rubber base plate. The base is arranged at the bottom of the concrete hollow slab, and the sliding rail is arranged on the side of the beam body. The sliding rods are arranged at equal intervals at the bottom of the base. The lower ends of the sliding rods are bent and extend into the sliding rail. The rubber base plate is arranged at the bottom of the sliding rail. There are a plurality of raised portions on the top of the rubber base plate. During the vibration process, the rubber base plate rises, causing the raised portions to extend between adjacent two sliding rods.

[0012] Preferably, a sliding cavity is provided at the lower end of the sliding rod. A motor is connected inside the base. The transmission shaft of the motor is connected to a steel wire. The steel wire extends along the length direction of the sliding rod into the sliding cavity and is connected to a piston. One side of the piston away from the opening of the sliding cavity is connected to a medium spring. The end of the medium spring away from the piston abuts against the inner wall of the sliding cavity.

[0013] Preferably, a thick spring is connected to the contact side of the lower end of the sliding rod and the raised portion. The sound wave collection module is connected to the base.

[0014] Preferably, the cross-section of the raised portion is trapezoidal. An insertion post is connected to the top of the raised portion. A jack adapted to the insertion post is provided at the top of the sliding rail. An electric push rod is connected to the bottom of the rubber base plate.

[0015] Preferably, an amplitude-increasing groove is provided on the inner wall of the chamber of the core tube section, and a plurality of support rods are connected in the amplitude-increasing groove.

[0016] Preferably, criss-cross elastic rubber bands are connected inside the shape memory metal connecting piece, and the longitudinal elastic rubber bands are connected to the transverse elastic rubber bands.

[0017] (III) Beneficial effects

[0018] The present invention provides a prefabricated prestressed concrete hollow slab reinforcement energy dissipation connection structure. It has the following beneficial effects:

[0019] 1. This prefabricated prestressed concrete hollow slab reinforcement energy dissipation connection structure is composed of a reinforcement energy dissipation core tube and a shape memory metal connecting piece. The reinforcement energy dissipation core tube is provided with a friction damper, which achieves the effect of energy dissipation during an earthquake, increases the bearing capacity of the joint, further improves the seismic capacity of the structure, improves the overall safety performance, improves the integrity of building components, and effectively avoids the probability of the concrete hollow slab falling.

[0020] 2. The assembled prestressed concrete hollow slab reinforcement energy dissipation connection structure is also provided with a base, a sound wave collection module, a sliding rod and a rubber substrate. Inside the core section, there are a sphere, a strip, a small spring and a percussion piece, and the sphere is used to form a sound generating component, which is then combined with the sound wave collection module to sense the vibration intensity. When the vibration intensity reaches the preset value, the sliding rod and the rubber substrate work to further strengthen the firmness of the beam body and the concrete hollow slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a working display diagram of the structure of the present invention;

[0022] Figure 2 It is a sectional view taken along line A-A of the present invention;

[0023] Figure 3 It is a sectional view taken along line C-C of the present invention;

[0024] Figure 4 It is a three-dimensional view of the reinforcement energy dissipation core structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the shape memory metal connecting piece of the present invention;

[0026] Figure 6 It is a sectional view of the core section structure of the present invention;

[0027] Figure 7 It is a three-dimensional view of the partial structure of the present invention;

[0028] Figure 8 It is a side view of the partial structure of the present invention;

[0029] Figure 9 It is a schematic diagram of the internal structure of the sliding rod of the present invention;

[0030] Figure 10 It is a schematic diagram of the slide rail structure of the present invention.

[0031] In the figure: 1 beam body, 2 concrete hollow slab, 3 reinforcement energy dissipation core, 31 steel bracket, 32 core section, 321 amplitude increasing groove, 322 sphere, 323 strip, 324 small spring, 325 percussion piece, 326 support rod, 33 friction damper, 34 anchoring node, 4 shape memory metal connecting piece, 41 elastic rubber band, 5 base, 51 motor, 52 steel wire, 53 piston, 54 middle spring, 6 sound wave collection module, 7 sliding rod, 71 thick spring, 72 sliding cavity, 8 slide rail, 9 rubber substrate, 91 raised part, 92 insertion post, 93 electric push rod. DETAILED DESCRIPTION OF THE INVENTION

[0032] An embodiment of the present invention provides an assembled prestressed concrete hollow slab reinforcement energy dissipation connection structure, as Figure 1-10As shown in the figure, the beam body 1 and the concrete hollow slab 2 are fixedly connected together. It includes a reinforced energy-dissipating cylinder core 3 and a shape memory metal connecting piece 4. The reinforced energy-dissipating cylinder core 3 is arranged at the bottom of the shape memory metal connecting piece 4. The shape memory metal connecting piece 4 is arranged on the upper surface of the concrete hollow slab 2. The reinforced energy-dissipating cylinder core 3 extends into the holes of the concrete hollow slab 2. Multiple pairs of bolts are threadedly connected to the top of the shape memory metal connecting piece 4. One pair of bolts passes through the shape memory metal connecting piece 4 and is threadedly connected to the beam body 1. The other pair of bolts penetrates the beam body 1, extends into the holes of the concrete hollow slab 2, and is threadedly connected to the reinforced energy-dissipating cylinder core 3.

[0033] The reinforced energy-dissipating cylinder core 3 consists of a steel bracket 31, a cylinder core section 32, a friction damper 33, and an anchoring node 34. The upper end of the steel bracket 31 is threadedly connected to the shape memory metal connecting piece 4 by bolts. The lower end of the steel bracket 31 is welded to the cylinder core section 32. The right side of the cylinder core section 32 is fixedly installed with the friction damper 33. The right end of the friction damper 33 is fixedly installed with the anchoring node 34. The top of the anchoring node 34 is used to connect with the bolts. During operation, the cylinder core section 32, the friction damper 33, and the anchoring node 34 all extend into the holes of the concrete hollow slab 2.

[0034] By the above method, it is used to limit the displacement of the end part of the concrete hollow slab 2, enhance the integrity with the beam body 1, and achieve the effect of energy dissipation and shock absorption through the friction damper 33 in the energy-dissipating cylinder core 3. Rubber layers are fixedly installed on the surfaces of the cylinder core section 32 and the anchoring node 34, making it a soft contact with the concrete hollow slab 2. The friction damper 33 is used for friction energy dissipation when the concrete hollow slab 2 slips.

[0035] During an earthquake, the shape memory metal connecting piece 4 resists the tensile deformation energy consumption on the upper surface of the connection node, increases the bearing capacity of the node, has a certain deformation recovery ability after the earthquake, and improves the safety performance of the concrete hollow slab 2.

[0036] It also includes an auxiliary reinforcement component. A sensor is installed on the auxiliary reinforcement component. The sensor is used to sense the vibration degree of the beam body 1. The sensor is a sound wave collection module 6.

[0037] A small chamber is opened inside the cylinder core section 32. A sphere 322 is fixedly hung at the top of the inner wall of the chamber by a thin iron chain. Strip blocks 323 are symmetrically and fixedly installed on both sides of the inner wall of the chamber. A small spring 324 is welded to the side of the strip block 323 facing the sphere 322. The lower end of the small spring 324 is welded to a percussion piece 325. During the vibration process, the sphere 322 shakes and impacts the percussion piece 325, causing the percussion piece 325 to strike the strip block 323.

[0038] The auxiliary reinforcement component is arranged at the end of the beam body 1. The auxiliary reinforcement component includes a base 5, a plurality of sliding rods 7, a slide rail 8, and a rubber substrate 9. The base 5 is fixedly installed at the bottom of the concrete hollow slab 2, the slide rail 8 is fixedly installed on the side of the beam body 1, the sliding rods 7 are welded to the bottom of the base 5 at equal intervals, the lower ends of the sliding rods 7 are bent and extend into the slide rail 8, and the lower ends of the sliding rods 7 are slidably matched with the slide rail 8.

[0039] The rubber substrate 9 is arranged at the bottom of the slide rail 8. There are a plurality of raised portions 91 on the top of the rubber substrate 9, and the rubber substrate 9 and the raised portions 91 are integrally formed. During vibration, the rubber substrate 9 rises, causing the raised portions 91 to extend between two adjacent sliding rods 7.

[0040] A sliding cavity 72 is formed at the lower end of the sliding rod 7. A motor 51 is fixedly installed in the base 5. A steel wire 52 is welded to the transmission shaft of the motor 51. The steel wire 52 extends into the sliding cavity 72 along the length direction of the sliding rod 7 and is fixedly tied with a piston 53. A medium spring 54 is fixedly installed on the side of the piston 53 away from the opening of the sliding cavity 72, and one end of the medium spring 54 away from the piston 53 abuts against the inner wall of the sliding cavity 72.

[0041] A thick spring 71 is welded to the contact side of the lower end of the sliding rod 7 and the raised portion 91. The sound wave collection module 6 is fixedly installed together with the base 5. The sound wave collection module 6 is a prior art, so its specific structure, connection method, etc. will not be described in detail.

[0042] The cross-section of the raised portion 91 is trapezoidal. A plug post 92 is fixedly installed on the top of the raised portion 91. A jack adapted to the plug post 92 is formed on the top of the slide rail 8. An electric push rod 93 is fixedly installed at the bottom of the rubber substrate 9. By inserting the plug post 92 into the jack of the slide rail 8, the firmness of the raised portion 91 during operation is enhanced.

[0043] It further includes a control module which controls the operation of electronic components. The above-mentioned electric push rod 93, sound wave collection module 6, and motor 51 are electrically connected to the building indoor circuit. Since this is a conventional technology, it will not be described in detail.

[0044] Before operation, the lower end of the sliding rod 7 is in close contact with the beam body 1, and the opening of the sliding cavity 72 is sealed by the beam body 1. Under the action of the medium spring 54, the piston 53 is in close contact with the surface of the beam body 1.

[0045] Working principle: During vibration, the rear sphere 322 swings back and forth, the sphere 322 impacts the percussion piece 325, and the percussion piece 325 continuously strikes the strip 323 to generate sound waves. The sound waves are collected by the sound wave collection module 6 through the solid transmission method. Then the motor 51 rotates to wind the steel wire 52, the piston 53 moves away from the beam body 1, causing negative pressure to be generated in the sliding cavity 72, thereby strengthening the overall connection between the sliding rod 7 and the beam body 1.

[0046] Meanwhile, the electric push rod 93 works to push the rubber substrate 9 upward. The raised portion 91 extends into the space between two adjacent sliding rods 7. The thick spring 71 contacts the rubber substrate 9. The sliding rod 7 sways back and forth, and through the cooperation of the thick spring 71 and the rubber substrate 9, the moving range of the sliding rod 7 is buffered, achieving the effect of shock absorption.

[0047] Amplification grooves 321 are formed in the inner wall of the cavity of the core tube section 32, and a plurality of support rods 326 are fixedly installed in the amplification grooves 321. When the knocking sound encounters the support rods 326, the reflection of sound waves is generated, and the sound volume is enhanced by using the sound wave reflection, which is helpful for the collection of the sound wave collection module 6.

[0048] Elastic rubber bands 41 arranged vertically and horizontally are fixedly installed in the shape memory metal connecting piece 4, and the vertically arranged elastic rubber bands 41 are connected to the horizontally arranged elastic rubber bands 41. The integrity of the shape memory metal connecting piece 4 is improved by using the elastic rubber bands 41, and when the shape memory metal connecting piece 4 is torn, it is connected by the elastic rubber bands 41.

[0049] In summary, the assembled prestressed concrete hollow slab reinforcement energy dissipation connection structure is composed of a reinforcement energy dissipation core tube 3 and a shape memory metal connecting piece 4. The reinforcement energy dissipation core tube 3 is provided with a friction damper 33, which plays a role in earthquake energy dissipation, increases the bearing capacity of the node, further improves the seismic capacity of the structure, improves the overall safety performance, improves the integrity of building components, and effectively avoids the probability of the concrete hollow slab 2 falling.

[0050] Moreover, a base 5, a sound wave collection module 6, a sliding rod 7 and a rubber substrate 9 are further provided. A sphere 322, a strip 323, a small spring 324 and a knocking piece 325 are arranged in the core tube section. The sphere 322 is used to form a sound generating component, which cooperates with the sound wave collection module 6 to play a role in sensing the vibration intensity. When the vibration intensity reaches a preset value, the sliding rod 7 and the rubber substrate 9 work to further strengthen the firmness between the beam body 1 and the concrete hollow slab 2.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated prestressed concrete hollow slab reinforcement energy dissipation connection structure connects a beam body (1) and a concrete hollow slab (2), and is characterized in that: It includes a reinforced energy-dissipating tube core (3) and a shape memory metal connecting piece (4). The reinforced energy-dissipating tube core (3) is placed at the bottom of the shape memory metal connecting piece (4), and the shape memory metal connecting piece (4) is arranged on the upper surface of the concrete hollow slab (2). The reinforced energy-dissipating tube core (3) extends into the holes of the concrete hollow slab (2). Multiple pairs of bolts are connected to the top of the shape memory metal connecting piece (4). One pair of bolts passes through the shape memory metal connecting piece (4) and is threadedly connected to the beam body (1), and the other pair of bolts penetrates the beam body (1), extends into the holes of the concrete hollow slab (2), and is threadedly connected to the reinforced energy-dissipating tube core (3). The reinforced energy-dissipating tube core (3) consists of a steel bracket (31), a tube core section (32), a friction damper (33), and an anchoring node (34). The upper end of the steel bracket (31) is threadedly connected to the shape memory metal connecting piece (4) by bolts. The lower end of the steel bracket (31) is connected to the tube core section (32). The right side of the tube core section (32) is connected to the friction damper (33). The right end of the friction damper (33) is connected to the anchoring node (34). The top of the anchoring node (34) is used to connect with bolts. It also includes an auxiliary reinforcement component. A sensor is provided on the auxiliary reinforcement component. The sensor is used to sense the vibration degree of the beam body (1), and the sensor is a sound wave collection module (6). A small chamber is opened inside the tube core section (32). A sphere (322) is suspended by a thin iron chain at the top of the inner wall of the chamber. Strip blocks (323) are symmetrically arranged on both sides of the inner wall of the chamber. A small spring (324) is connected to the side of the strip block (323) facing the sphere (322). The lower end of the small spring (324) is connected to a percussion piece (325). During the vibration process, the sphere (322) shakes and impacts the percussion piece (325), causing the percussion piece (325) to strike the strip block (323).

2. The energy dissipation connection structure for strengthening the precast prestressed concrete hollow slab according to claim 1, characterized in that: The auxiliary reinforcement component is placed at the end of the beam body (1). The auxiliary reinforcement component includes a base (5), multiple sliding rods (7), a slide rail (8), and a rubber base plate (9). The base (5) is placed at the bottom of the concrete hollow slab (2). The slide rail (8) is placed on the side of the beam body (1). The sliding rods (7) are arranged at equal distances at the bottom of the base (5). The lower ends of the sliding rods (7) are bent and extend into the slide rail (8). The rubber base plate (9) is arranged at the bottom of the slide rail (8). There are multiple raised parts (91) on the top of the rubber base plate (9). During the vibration process, the rubber base plate (9) rises, causing the raised parts (91) to extend between adjacent two sliding rods (7).

3. The energy dissipation connection structure for strengthening precast prestressed concrete hollow slabs according to claim 2, characterized in that: A sliding cavity (72) is opened at the lower end of the sliding rod (7). A motor (51) is connected inside the base (5). The transmission shaft of the motor (51) is connected to a steel wire (52). The steel wire (52) extends into the sliding cavity (72) along the length direction of the sliding rod (7) and is connected to a piston (53). A medium spring (54) is connected to the side of the piston (53) away from the opening of the sliding cavity (72). The end of the medium spring (54) away from the piston (53) abuts against the inner wall of the sliding cavity (72).

4. The assembled prestressed concrete hollow slab reinforcement energy dissipation connection structure according to claim 3, characterized in that: A thick spring (71) is connected to the contact side of the lower end of the sliding rod (7) and the raised part (91). The sound wave collection module (6) is connected to the base (5).

5. The energy dissipation connection structure for strengthening the precast prestressed concrete hollow slab according to claim 4, characterized in that: The cross-section of the raised portion (91) is trapezoidal. A plug post (92) is connected to the top of the raised portion (91). A jack adapted to the plug post (92) is provided at the top of the slide rail (8). An electric push rod (93) is connected to the bottom of the rubber substrate (9).

6. The energy dissipation connection structure for strengthening the precast prestressed concrete hollow slab according to claim 5, characterized in that: Amplification grooves (321) are formed in the inner wall of the chamber of the core tube section (32), and a plurality of support rods (326) are connected in the amplification grooves (321).

7. The energy dissipation connection structure for strengthening an assembled prestressed concrete hollow slab according to claim 6, characterized in that: Criss-cross elastic rubber bands (41) are connected inside the shape memory metal connecting piece (4), and the longitudinal elastic rubber bands (41) are connected to the transverse elastic rubber bands (41).

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