CN107893479A - A kind of prefabricated assembled concrete framework - Google Patents

Abstract

The present invention provides a prefabricated concrete frame, comprising at least two prefabricated components and a connecting device, the prefabricated components are fixedly connected by the connecting device, and the connecting device includes The first fixed plate and the second fixed plate are connected by at least one supporting plate. The connection between the connecting device and the prefabricated components is reliable, which avoids the potential safety hazards in the prior art when the prefabricated components are connected by secondary pouring, and realizes full assembly of construction at the construction site. The construction is convenient and accurate, which greatly improves the construction efficiency and meets the development requirements of saving and environmental protection. The prefabricated components and the connecting device are connected by bolts, which can be easily assembled and improve the construction efficiency. At the same time, the connection is simple, the maintenance after the earthquake is simple, and it is easy to replace, which meets the performance design goal of the replaceable building structure.

Description

A prefabricated concrete frame

technical field

The invention relates to the field of prefabricated assembled concrete building structures, in particular to a prefabricated assembled concrete frame.

Background technique

As my country enters a critical stage of economic structural transformation and upgrading, it is the general trend to vigorously develop prefabricated buildings. Prefabricated buildings are buildings assembled on site with prefabricated parts. The development of prefabricated buildings is a major change in the construction method and an important measure to promote the supply-side structural reform of the construction industry. It is conducive to saving resources and energy, reducing construction pollution, improving labor production efficiency and quality and safety levels, and promoting the construction industry and information. The deep integration of chemical industrialization, the cultivation of new industries and new kinetic energy, and the promotion of the resolution of excess capacity.

Prefabricated concrete frame structure has become one of the most widely used prefabricated concrete structural systems in the world because of its advantages of flexible layout and large indoor space. At present, ordinary prefabricated concrete frame structures usually adopt the construction method of secondary cast-in-place, that is, the method of post-casting concrete at the beam-column joints on the construction site to make the prefabricated beam and column components form an integral structure. This construction method greatly slows down the construction efficiency and violates the original intention of adopting the prefabricated assembly structure; in the beam-column joint area, due to the fact that there are many steel bars bound, there is a phenomenon that the steel bars cannot be placed accurately. The means of steel bars is a great safety hazard; the concrete poured on site may have insufficient concrete vibration and poor maintenance due to the small space in the node area, and the construction quality is rarely guaranteed. It can be seen that the traditional prefabricated concrete frame structure system using the secondary cast-in-place construction method is a structural system with low efficiency, potential safety hazards, and unguaranteed quality.

The earthquake damage investigation data of previous major earthquakes show that the prefabricated concrete frame structure was seriously damaged in the earthquake. The main reason for its serious damage is that the joint between the secondary cast-in-place area and the prefabricated components has poor seismic performance and poor integrity. Since the construction quality of the prefabricated components and the secondary cast-in-place area is difficult to guarantee, the performance of the joints of the prefabricated concrete frame structure is often poor, which directly deteriorates the seismic performance and integrity of the overall structure. Therefore, the construction is simple and the quality assurance is high. And a reliable connection method is very important for prefabricated concrete structures.

Contents of the invention

In view of the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a prefabricated concrete frame with reliable connection, full assembly, high construction efficiency and environmental protection.

In order to solve the above technical problems, the prefabricated concrete frame provided by the present invention includes at least two prefabricated components and a connecting device, and two adjacent prefabricated components are fixedly connected by the connecting device; the connecting device includes The first fixed plate and the second fixed plate connected to the prefabricated component are connected by at least one supporting plate.

Further, it is characterized in that the prefabricated components are provided with pre-embedded steel bars.

Optionally, the prefabricated component is provided with a pre-embedded positioning device, the pre-embedded positioning device includes a pre-embedded positioning plate and a first reinforcement plate, and the first reinforcement plate is fixedly connected to the first reinforcement plate of the pre-embedded positioning plate On one side, the embedded steel bars are connected to the first reinforced plate; the first fixed plate or the second fixed plate is connected to the second side of the embedded positioning plate.

Further, the first reinforcing plate is vertically connected to the embedded positioning plate, and the embedded reinforcing bars are parallel to the first reinforcing plate.

Optionally, the first fixing plate or the second fixing plate and the embedded positioning plate are connected by bolts.

Further, the bolts include anchor bolts and fastening bolts, and the bolt heads of the bolts are arranged in the prefabricated component.

Optionally, the prefabricated component is a prefabricated column or a prefabricated beam or a combined prefabricated component, the combined prefabricated component includes a column section and a beam section, the prefabricated column or the prefabricated beam or the combination At least one end of the type prefabricated component is provided with the embedded positioning device.

Further, the embedded positioning device is provided at the intersection of the column section and the beam section.

Optionally, at least one end of the prefabricated component is pre-connected with the connecting device, and the first fixed plate or the second fixed plate is provided with a second reinforcement plate, and the embedded steel bar is connected to the The second reinforcement plate is connected.

Optionally, a first support plate and a second support plate are connected between the first fixed plate and the second fixed plate, and the first support plate and the second support plate are perpendicular to each other and The two ends of the first support plate are vertically connected with the first end plate and the second end plate respectively, and the two ends of the second support plate are respectively vertically connected with the third end plate and the fourth end plate, Both ends of the first end plate, both ends of the second end plate, both ends of the third end plate and both ends of the fourth end plate are respectively connected to the first fixed plate and the The second fixing plate.

The beneficial effects of the present invention are as follows:

1. The prefabricated concrete frame of the present invention uses a connecting device to connect the prefabricated components. The connecting device and the prefabricated components are fixedly connected, and the connection is reliable, which avoids the possible existence of prefabricated components connected by secondary pouring in the prior art. In order to solve the potential safety hazards, the construction is fully assembled at the construction site, which saves labor force, facilitates on-site construction, greatly improves the construction efficiency, and meets the development requirements of energy saving, land saving, water saving, material saving and environmental protection.

2. The connection device adopted in the present invention, under the action of small earthquake or wind vibration, the damper provides greater rigidity for the structure, reduces the vibration response of the structure, and meets the normal use requirements of the structure. In the event of a moderate to large earthquake, the damper in the frame structure system will greatly reduce the seismic response of the structure, and the damper will start to provide additional damping for the structure, play the role of energy dissipation and shock absorption, and protect the main structure.

3. The prefabricated component of the present invention is provided with a pre-embedded positioning device, and the pre-embedded positioning device is provided with a steel bar, which can make the positioning of the pre-embedded positioning plate accurate and the position of the pre-embedded positioning plate in the prefabricated component firm. In the same way, a fastening plate of the connecting device is pre-embedded in the prefabricated component, and the steel plate is provided on the fastening plate, which not only has the above functions, but also facilitates connection. The above two solutions can be flexibly selected.

4. The pre-embedded positioning device of the present invention is also provided with anchor bolts and fastening bolts, and the bolt heads of the anchor bolts and the fastening bolts are arranged in the prefabricated components, the anchor bolts can play the role of positioning and fastening, and the fastening bolts Protruding from the prefabricated component and connecting with the fixed plate, the connection between the prefabricated component and the fixed plate is more firm and reliable.

5. The prefabricated components and the connection device of the present invention are connected by bolts, which can facilitate assembly and improve construction efficiency. At the same time, the connection is simple, the maintenance after the earthquake is simple, and it is easy to replace, which meets the performance design goal of replaceable building structures.

6. The connection device of the present invention connects the prefabricated components together through the connection between the fixed plate and the prefabricated component or the pre-embedded positioning device of the prefabricated component, and by arranging the supporting plate, the metal connector has the function of energy dissipation and shock absorption in the earthquake , the main structure of the protection frame, the structure of the connection device is simple, and it is easy to arrange screw holes on the fixed plate, which is convenient for installation.

Description of drawings

Fig. 1 is a schematic structural view of the prefabricated concrete frame of the present invention.

Fig. 2 is a connection schematic diagram of the prefabricated concrete frame of the present invention.

Fig. 3 is a schematic diagram of a connection method between the connection device and the prefabricated component.

Fig. 4 is a schematic diagram of another connection method between the connection device and the prefabricated component.

Fig. 5 is a structural schematic diagram of the pre-embedded positioning plate.

Fig. 6 is a schematic structural view of the connection device of the present invention.

Fig. 7 is a schematic cross-sectional view of the connection device of the present invention.

Among them, 1. Prefabricated assembled concrete frame; 11. Prefabricated beam components; 12. Prefabricated column components; 13. Combined prefabricated components; 2. Connecting device; 21. The first fixed plate; 22. The second fixed plate; 23 , the first reinforcement plate; 24, the first anchor bolt; 25, the connecting screw hole; 26, the support plate; 261, the first support plate; 262, the second support plate; 263, the third support plate; 264, the fourth support plate; 265, the fifth supporting plate; 266, the rib plate; 3, the embedded positioning plate; 31, the second reinforcement plate; 32, the second anchor bolt; 33, through the screw hole; 34, the fixed bolt; Buried steel bars.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Referring to Fig. 1, the prefabricated concrete frame 1 of this embodiment includes at least two prefabricated components, the prefabricated components can be prefabricated beam components 11, prefabricated column components 12 or combined prefabricated components 13, and the prefabricated components are connected by connecting devices 2 , the connecting device 2 can be located at any position of the prefabricated concrete frame 1 . Referring to Fig. 2, the prefabricated concrete frame is decomposed into prefabricated beam components 11, prefabricated column components 12 or composite prefabricated components 13, the prefabricated components are manufactured in advance in the factory, and assembled by connecting device 2 after being transported to the construction site.

The connection between the connection device 2 and the prefabricated component in this embodiment can be pre-embedded at one end and bolted at the other end. Referring to Fig. 3, the connecting device 2 of this embodiment includes a support plate 26, a first fixed plate 21 and a second fixed plate 22 parallel to each other, the first fixed plate 21 is pre-embedded in the prefabricated component, and the first fixed plate The side of the plate 21 close to the center of the prefabricated component is provided with two first reinforcement plates 23 parallel to each other and the two first reinforcement plates 23 are arranged near the two ends of the first fastening plate 21, and the middle part of the first fastening plate 21 is also There are two rows of first anchor bolts 24 parallel to each other. There are pre-embedded steel bars 4 inside the prefabricated components. The first anchor bolts 24 can make the first fastening plate 21 accurately positioned and connected reliably in the prefabricated component, and the second fastening plate 22 is provided with a connecting screw hole 25 for bolted connection with another prefabricated component.

Referring to Fig. 5, the connecting end of another prefabricated component is provided with an embedded positioning plate 3, and on the side of the embedded positioning plate 3 close to the center of the other prefabricated component, there are two mutually parallel second reinforcement plates 31 and two The second reinforcing plate 31 is arranged near the two ends of the pre-embedded positioning plate 3, and the middle part of the pre-embedded positioning plate 3 is also provided with two rows of second anchor bolts 32 parallel to each other. 4. Parallel to the second reinforcement plate 31 and welded to the second reinforcement plate 31, the second reinforcement plate 31 and the second anchor bolts 32 can make the positioning of the pre-embedded positioning plate 3 in the prefabricated component accurate and the connection reliable. Embedded positioning plate 3 is also provided with four through screw holes 33 and four through screw holes 33 are arranged near the four corners of embedded positioning plate 3, and embedded positioning plate 3 is also provided with four through screw holes 33. As for the matched fastening bolt 34 , one end of the fastening bolt 34 is pre-embedded in the prefabricated component, and the other end protrudes from the pre-embedded positioning plate 3 through the through screw hole 33 . Referring to Fig. 3, one end of the fastening bolt 34 protruding from the embedded positioning plate 3 is bolted to the second fastening plate 22 through the connecting screw hole 25 on the second fastening plate 22.

It should be pointed out that the embedded positioning plate 3 in this embodiment is vertically connected to the corresponding reinforcement plate, and the embedded positioning plate 3 and the corresponding reinforcement plate form the embedded positioning device through connection.

The first fixed plate 21 of the connecting device 2 is pre-embedded in the prefabricated component, the second fixed plate 22 is bolted to the embedded positioning plate 3 in another prefabricated component, and the two prefabricated components are fixedly connected by the connecting device 2 At the same time, the connection is reliable and convenient, avoiding the potential safety hazards that may exist in the connection between prefabricated components in the prior art by secondary pouring, and realizing the full assembly of construction on the construction site, saving labor, and convenient and accurate on-site construction. The construction efficiency is greatly improved, and the development requirements of energy saving, land saving, water saving, material saving and environmental protection are met. In addition, the use of bolt connection not only facilitates assembly and improves construction efficiency, but also makes connection simple, easy to maintain after an earthquake, and easy to replace, which meets the performance-based design goal of replaceable building structures. It should be noted that the connection device 2 used in the present invention may also be other dampers with fixed plates.

The connection method of the connection device 2 in this embodiment can also be a bolt connection at both ends. The difference between this embodiment and the above-mentioned one-end embedded and one-end bolt connection method is that the ends of the two prefabricated components are equipped with the above-mentioned embedded positioning device. The two prefabricated components are connected together through the bolt connection between the connecting device 2 and the embedded positioning plate 3 . Referring to Fig. 4, the first fastening plate 21 of the connection device 2 is bolted to the embedded positioning plate 3 in the prefabricated component, and the second fastening plate 22 is bolted to the embedded positioning plate 3 of another prefabricated component. It should be noted that the structure of the first fixing plate 21 and the second fixing plate 22 of the connecting device 2 at this time is the same as that of the second fixing plate 22 in the first embodiment. The way of bolt connection at both ends makes the assembly more flexible. Other aspects of this method are the same as those of the above-mentioned one-end pre-embedded and one-end bolt connection method, and will not be repeated here.

Referring to Fig. 6 and Fig. 7, the connection device 2 of this embodiment includes two first fixed plate 21 and second fixed plate 22 parallel to each other, the first fixed plate 21 and the second fixed plate 22 are connected There is a first support plate 263 and a second support plate 266, the first support plate 263 and the second support plate 266 cross each other and are perpendicular to each other, the two ends of the first support plate 263 are vertically connected with the first end plate 261 and the The second end plate 262, the first end plate 261 and the second end plate 262 are parallel to each other, and the two ends of the first end plate 261 are vertically connected with the first fixed plate 21 and the second fixed plate 22 respectively, and the second end The two ends of the plate 262 are vertically connected with the first fixed plate 21 and the second fixed plate 22 respectively; The end plate 264 and the fourth end plate 265 are parallel to each other, the two ends of the third end plate 264 are vertically connected with the first fixed plate 21 and the second fixed plate 22 respectively, and the two ends of the fourth end plate 265 are also connected with the first fixed plate 265 respectively. A fixed connection plate 21 and a second fixed connection plate 22 are vertically connected; Both the first fixing plate 21 and the second fixing plate 22 are provided with connecting screw holes 25 for connecting with the embedded positioning plate 3 , and the cross-sectional shape of the connecting device 2 is duplex. The prefabricated components are connected together through the connection between the fixed plate and the prefabricated component or the embedded positioning plate 3 of the prefabricated component. By arranging the supporting plate 26, the connecting device 2 has the function of energy dissipation and shock absorption in the earthquake, and the main structure of the frame is protected. , the structure of the connection device is simple, and it is easy to arrange screw holes on the fixed plate, which is convenient for installation. Of course, the connecting device in this embodiment may also be other connecting devices including a first fixing plate and a second fixing plate, and the first fixing plate and the second fixing plate are connected by at least one supporting plate.

In summary, the prefabricated concrete frame of the present invention adopts the connecting device 2 to connect the prefabricated components, and the prefabricated components are connected together through the connection between the fixed plate of the connecting device 2 and the prefabricated components or the embedded positioning plate 3 of the prefabricated components, The connection is reliable, which avoids the potential safety hazards that may exist in the connection between prefabricated components in the prior art by secondary pouring, realizes full assembly of construction at the construction site, saves labor, and facilitates on-site construction. Efficiency meets the development requirements of energy saving, land saving, water saving, material saving and environmental protection. Moreover, bolts are used between the fixed plate and the pre-embedded positioning plate 3, which can facilitate assembly and improve construction efficiency. At the same time, the connection is simple, easy to maintain after an earthquake, and easy to replace, which meets the performance-based design goal of replaceable building structures.

It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, "first" information may also be referred to as "second" information without departing from the scope of the present invention, and similarly, "second" information may also be referred to as "first" information.

The above description is a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and deformations can also be made, and these improvements and deformations are also considered Be the protection scope of the present invention.

Claims (10)

1. a kind of prefabricated assembled concrete framework, it is characterised in that adjacent including at least two prefabricated components and attachment means It is fixedly connected between two prefabricated components by the attachment means；The attachment means include being used for and the prefabricated structure The first fixation plate and the second fixation plate that part is connected, pass through at least one between first fixation plate and second fixation plate Block supporting plate connects.

2. prefabricated assembled concrete framework as claimed in claim 1, it is characterised in that be provided with the prefabricated components pre-buried Reinforcing bar.

3. prefabricated assembled concrete framework as claimed in claim 2, it is characterised in that the prefabricated components are provided with pre-buried Positioner, the preburied positioning device include pre-buried location-plate and the first reinforced slab, and first reinforced slab is fixedly connected on First side of the pre-buried location-plate, the embedded bar are connected with first reinforced slab；First fixation plate or institute State the second side that the second fixation plate is connected to the pre-buried location-plate.

4. prefabricated assembled concrete framework as claimed in claim 3, it is characterised in that first reinforced slab with it is described pre- Location-plate vertical connection is buried, the embedded bar is parallel to first reinforced slab.

5. prefabricated assembled concrete framework as claimed in claim 3, it is characterised in that first fixation plate or described It is bolted between two fixation plates and the pre-buried location-plate.

6. prefabricated assembled concrete framework according to claim 5, it is characterised in that the bolt includes anchor bolt With affixed bolt, and the bolt head of the bolt is in the prefabricated components.

7. prefabricated assembled concrete framework as claimed in claim 3, it is characterised in that the prefabricated components are prefabricated column piece Or prefabricated beam or assembling-type precast component, the assembling-type precast component include shell of column and beam section, the prefabricated column piece or institute At least one end for stating prefabricated beam or the assembling-type precast component is provided with the preburied positioning device.

8. the intersection of prefabricated assembled concrete framework according to claim 7, the shell of column and the beam section is provided with The preburied positioning device.

9. prefabricated assembled concrete framework according to claim 7, it is characterised in that at least the one of the prefabricated components End pre-terminated has the attachment means, and first fixation plate or second fixation plate are provided with the second reinforced slab, described pre-buried Reinforcing bar is connected with second reinforced slab.

10. the attachment means as described in any one of claim 1 to 9, it is characterised in that first fixation plate and described second The first supporting plate and the second supporting plate are connected between fixation plate, and first supporting plate and second supporting plate are mutually hung down Direct join, which intersects to wear, to be connect, and the both ends of first supporting plate, which are respectively perpendicular, is connected with first end plate and the second end plate, described second The both ends of fagging are respectively perpendicular is connected with the 3rd end plate and the 4th end plate, the both ends of the first end plate, second end plate The both ends at both ends, the both ends of the 3rd end plate and the 4th end plate respectively connect first fixation plate and described second Fixation plate.