CN204112525U - Band perps precast shear wall structure in strong concrete precast frame - Google Patents

Abstract

The utility model discloses a prefabricated shear wall structure with vertical joints embedded in a high-strength concrete prefabricated frame, comprising a high-strength prefabricated shear wall with vertical joints and two prefabricated composite beams, the high-strength prefabricated shear wall with vertical joints The wall is provided with an upper shear key and a lower shear key; the prefabricated composite beam is provided with embedded parts and also includes a prefabricated frame column; the prefabricated composite beam and the prefabricated frame column form a prefabricated side frame; The high-strength prefabricated shear wall with vertical joints is arranged in the prefabricated side frame; the high-strength prefabricated shear wall with vertical joints is laminated with the two prefabricated The embedded parts on the beam are connected. Because the main force-bearing parts of the utility model adopt prefabricated parts, it has the beneficial effects of flexible setting and convenient replacement.

Description

High-strength concrete prefabricated frame embedded prefabricated shear wall structure with vertical joints

technical field

The utility model relates to the technical field of building structures, in particular to a prefabricated shear wall structure with vertical seams embedded in a high-strength concrete prefabricated frame.

Background technique

With the increase of high-rise and ultra-high-rise buildings year by year, the requirements for the seismic performance of shear walls are also getting higher and higher. Shear wall is the core anti-lateral component in high-rise building structure, and its seismic performance plays a decisive role in the safety and reliability of high-rise buildings. When the shear wall panel is combined with the frame, it is usually made into a shear wall panel system with a frame. In order to improve the seismic load-bearing performance of the shear wall panel, various types of shear walls have been studied by those skilled in the art. Such as composite shear wall, the wall panel is composed of steel plate and concrete wall panel; or the wall panel is made of reinforced concrete, and the frame is made of steel frame. Among them, the system that uses solid shear wall panels to fill the frame, because the wall panels are divided into low walls, is prone to shear failure and has poor seismic performance. For this reason, some studies have also proposed that shear walls with vertical joints be used in steel frames to improve their seismic performance, but the existing ordinary concrete vertical joint wall panels are only used for C20-C30, and their bearing capacity is low, sometimes unable to meet the requirements of high-rise structures. seismic design requirements. However, there are few reports on the more general system combining vertical seam shear wall panels and concrete frames.

Another example is that the Chinese patent CN202925717U discloses a connection node between a prefabricated concrete frame and an embedded precast concrete shear wall with vertical seams, including two embedded prefabricated concrete shear walls with vertical seams and a prefabricated composite beam. The beam is set between two prefabricated concrete shear walls with vertical joints. The prefabricated composite beam is preset with embedded angle steel parts, and the embedded angle steel parts include connectors and two ends of the connectors. An upper end plate and a lower end plate, the upper end plate and the lower end plate are arranged flush with the outer surface of the prefabricated composite beam; the upper part of the prefabricated concrete shear wall with vertical joints is preset with an upper shear key, The lower part is preset with a lower shear key. The upper shear key includes an upper connecting plate and an upper end plate connected with the upper connecting plate. The upper surface of the wall, the upper connecting plate is partially embedded in the embedded precast concrete shear wall with vertical seams, and partly protrudes to expose the end surface of the embedded precast concrete shear wall with vertical seams; the lower part The shear key includes a lower connecting plate and a lower end plate connected with the lower connecting plate, the lower end plate is arranged on the lower surface of the embedded prefabricated concrete shear wall with vertical joints, and the lower connecting plate is pre-embedded In the embedded precast concrete shear wall with vertical seams; the lower end plate of the prefabricated composite beam and the exposed part of the upper connecting plate of the embedded precast concrete shear wall with vertical seams connected and fixed, the upper end plate of the prefabricated composite beam is connected and fixed with the lower end plate of another embedded precast concrete shear wall with vertical seams. The shear wall connection node of this structure, because its prefabricated composite beams and embedded precast concrete shear walls with vertical joints can be completely prefabricated, and the upper and lower ends of the prefabricated composite beams and the embedded precast concrete shear walls with vertical joints The connection nodes between only need to be connected by simple welding and bolts on site, reliable connection and simple construction. However, when this structure is used in shear wall structures at present, concrete with a lower strength grade is used, and the seismic performance is lower.

Therefore, those skilled in the art have been devoting themselves to researching a high-strength concrete shear wall structure with better seismic performance and more flexible arrangement.

Utility model content

In view of the above-mentioned defects of the prior art, the utility model proposes a high-strength concrete shear wall structure with flexible layout and easy replacement of main stress-bearing parts.

In order to achieve the above purpose, the utility model provides a prefabricated shear wall structure with vertical joints embedded in a high-strength concrete prefabricated frame, including a high-strength prefabricated shear wall with vertical joints and two prefabricated composite beams. The prefabricated shear wall with vertical joints is provided with an upper shear key and a lower shear key; the prefabricated composite beam described in the second is provided with embedded parts; it also includes two prefabricated frame columns; the prefabricated composite beam described in the second and the composite beam described in the second The prefabricated frame columns constitute the prefabricated frame; the high-strength prefabricated shear wall with vertical joints is set in the prefabricated frame; the high-strength prefabricated shear wall with vertical joints passes through the upper shear key and the lower The shear keys are respectively connected with the embedded parts on the two prefabricated composite beams.

Further, the connection between the prefabricated composite beam and the prefabricated frame column forms four node areas; the four node areas are made of steel fiber concrete.

Further, the prefabricated frame column adopts high-strength concrete.

Further, the high-strength prefabricated shear walls with vertical joints and the prefabricated composite beams are made of high-strength concrete.

Further, the high-strength concrete is C60.

The beneficial effects of the utility model:

The high-strength concrete prefabricated frame of the utility model is embedded with a prefabricated concrete shear wall structure with vertical joints. Because its main stress-bearing parts are connected by detachable connection of prefabricated parts, it has the advantages of flexible structure setting and convenient replacement of stress-bearing parts. beneficial effect. At the same time, since the main components are prefabricated, the difficulty of construction is reduced, the workload of on-site construction is reduced, and the construction efficiency is improved.

On the other hand, due to the use of C60 high-strength concrete to pour it, the application range of the precast concrete shear wall structure system with vertical joints embedded in the concrete prefabricated frame has been expanded, and the test has proved that it has excellent seismic performance.

The conception, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

Description of drawings

Fig. 1 is the structural representation of the prefabricated composite beam of the prefabricated concrete frame and the connection node of the embedded prefabricated concrete shear wall with vertical joints;

Fig. 2 is the perspective structure schematic diagram of the connection node between prefabricated concrete frame and embedded prefabricated concrete shear wall with vertical seam;

Figure 3 is a schematic diagram of the overall connection structure of the embedded parts and connectors between the precast concrete frame and the connection node of the embedded precast concrete shear wall with vertical seams;

Fig. 4 is a structural schematic diagram of a prefabricated concrete shear wall structure with vertical joints embedded in a high-strength concrete prefabricated frame.

Detailed ways

As shown in Figures 1 to 3, a connection node between a prefabricated concrete frame and an embedded prefabricated concrete shear wall with vertical seams includes two embedded prefabricated concrete shear walls 200 with vertical seams and a prefabricated composite beam 100, The prefabricated composite beam 100 is arranged between two prefabricated concrete shear walls 200 with vertical joints; wherein, the prefabricated composite beam 100 is preset with embedded angle steel parts 110, and the embedded angle steel parts 110 include four pieces for connecting The angle steel of the piece and the upper end plate and the lower end plate connected to the two ends of the angle steel are arranged flush with the outer surface of the prefabricated composite beam 100 .

As shown in Figure 2, the upper part of the prefabricated concrete shear wall 200 with vertical joints is preset with an upper shear key 220, and the lower part is preset with a lower shear key 210, and the upper shear key 220 includes an upper connecting plate and an upper connection plate. The upper end plate connected by the connecting plate, the upper end plate is set on the upper surface of the embedded precast concrete shear wall 200 with vertical seams, and the upper connecting plate is partially embedded in the middle and part of the outer surface of the embedded precast concrete shear wall 200 with vertical seams The upper end surface of the embedded precast concrete shear wall 200 with vertical joints is exposed; the lower shear key 210 includes the lower connecting plate and the lower end plate connected with the lower connecting plate, and the lower end plate is set to the embedded precast concrete shear wall with vertical joints. The lower surface of the wall 200, the lower connecting plate is pre-embedded in the prefabricated concrete shear wall 200 with vertical seams.

The lower end plate of the prefabricated composite beam 100 is connected and fixed with the exposed part of the upper connecting plate of an embedded precast concrete shear wall 200 with vertical joints, and the upper end plate of the prefabricated composite beam 100 is connected with another embedded precast concrete shear wall with vertical joints. The lower end plate of the shear wall 200 is connected and fixed.

A connecting ear plate 300 is arranged between the exposed part of the upper connecting plate and the lower end plate, and the connecting ear plate 300 and the exposed part of the upper connecting plate are connected and fixed by bolts, and the connecting ear plate 300 and the lower end plate are fixed by welding , The exposed part of the upper connecting plate is provided with an oblong hole for passing the bolt, and in addition, a reinforcing rib is arranged between the exposed part of the upper connecting plate and the lower end plate.

In this application, if there is any unclear description of the joint between the precast concrete frame and the embedded precast concrete shear wall with vertical joints, please refer to the content disclosed in Chinese patent CN202925717U.

As shown in Figure 2 and Figure 4, a prefabricated shear wall structure with vertical joints embedded in a high-strength concrete prefabricated frame of the present invention, in a specific embodiment, includes a high-strength prefabricated shear wall with vertical joints 200, The prefabricated composite beam 100 and the prefabricated frame column 2 poured with C60 high-strength concrete.

The high-strength prefabricated shear wall with vertical joints is provided with an upper shear key 220 and a lower shear key 210 .

The prefabricated composite beam 100 is provided with embedded parts 110, and the prefabricated composite beam 100 and the prefabricated frame column 2 form a prefabricated frame.

The high-strength prefabricated shear wall 200 with vertical joints is set in the prefabricated edge frame. The high-strength prefabricated shear wall 200 with vertical joints is connected to the embedded parts on the prefabricated composite beam above the shear wall through the upper shear key 220, and the high-strength prefabricated shear wall with vertical joints is connected through the lower shear key 210 It is connected with the embedded parts on the prefabricated composite beams arranged under the shear walls.

After the high-strength prefabricated shear wall with vertical joints is introduced into the concrete prefabricated frame column 2, a prefabricated assembly shear wall structure system is formed. With this structure, since the main force-bearing parts are detachable structures, they can all be completed in the prefabrication field. Moreover, once the stressed parts are damaged, they can be removed from the structure and then replaced without changing the overall structure, thereby improving the structural prefabrication rate, reducing the workload of on-site construction, and simplifying construction process.

As shown in FIG. 4 , four node areas 1 are formed at the joints between the prefabricated composite beam 100 and the prefabricated frame column 2 ; the four node areas are made of steel fiber concrete. Since the node area is reinforced with steel fiber concrete, the structure of the node area is simplified and the construction difficulty is reduced.

In order to further improve the seismic performance of the structure, both the prefabricated shear wall 200 and the prefabricated composite beam 100 are poured with C60 high-strength concrete.

The high-strength concrete prefabricated frame of the utility model is embedded with a prefabricated concrete shear wall structure with vertical joints, and the number of columns can be increased according to the needs of the project, and the utility model is not limited thereto.

The specific construction method of the prefabricated concrete shear wall structure with vertical joints embedded in the high-strength concrete prefabricated frame of the utility model is as follows:

Step 1. After the construction of the laminated floors is completed and the design requirements are met, the prefabricated frame columns are installed.

Step 2. Grouting at the lower end of the precast column. After the grouting strength of the lower part of the precast column meets the design requirements, hoist the precast concrete shear wall with vertical joints embedded in the frame column, and set the shear wall at a suitable position. its fixed.

Step 3: Hoist the prefabricated composite beams, and start the construction and assembly of the prefabricated frame and the embedded prefabricated concrete shear walls with vertical joints. After placing the prefabricated composite beam at the exact position, install the bolts between the upper shear key on the upper part of the precast concrete shear wall with vertical joints and the connecting ear plate, and the bolts are not pre-tightened. The lower end plate is welded to the upper end plate of the angle steel embedded part.

Step 4: laying the floor slab, using steel fiber to pour the core area of the node area, and using C60 concrete to pour the composite beam.

Step 5: After the on-site pouring is completed and the strength of the pouring meets the design requirements, connect the precast concrete shear wall with vertical joints to the connection points around the frame. The prefabricated concrete shear wall structure with vertical joints embedded in the high-strength concrete prefabricated frame can work together.

The high-strength concrete prefabricated frame of the utility model is embedded with a prefabricated concrete shear wall structure with vertical joints, because its main force-bearing parts adopt a detachable connection mode of prefabricated parts. Therefore, the prefabrication of the prefabricated parts can be completed in the prefabrication factory, and then installed in suitable positions according to the needs. When a certain part is damaged, only the damaged part can be removed from the structure and replaced with a new part, thereby having the beneficial effects of flexible structure setting and convenient replacement of stressed parts. At the same time, since the main components are prefabricated, the difficulty of construction is reduced, the workload of on-site construction is reduced, and the construction efficiency is improved.

On the other hand, since it can be poured with C60 high-strength concrete, the strength of the structure and its anti-seismic performance are improved.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (5)

1. a band perps precast shear wall structure in strong concrete precast frame, comprises high strength band perps precast shear wall and two Prefabricated superposed beams, it is characterized in that, described high strength band perps precast shear wall is provided with top shear key and bottom shear key; Built-in fitting is provided with in Prefabricated superposed beam described in two; Also comprise two prefabricated frame columns; Described in Prefabricated superposed beam described in two and two, prefabricated frame columns forms prefabricated frame; Described high strength band perps precast shear wall is arranged in described prefabricated frame; Described high strength band perps precast shear wall is connected with the described built-in fitting on Prefabricated superposed beam described in two with described bottom shear key respectively by described top shear key.

2. band perps precast shear wall structure in strong concrete precast frame as claimed in claim 1, it is characterized in that, described Prefabricated superposed beam and described prefabricated frame columns junction form four node area; Node area described in four adopts steel fibrous concrete material.

3. band perps precast shear wall structure in strong concrete precast frame as claimed in claim 1, is characterized in that, described prefabricated frame columns adopts strong concrete.

4. band perps precast shear wall structure in strong concrete precast frame as claimed in claim 3, it is characterized in that, described high strength band perps precast shear wall and described Prefabricated superposed beam adopt strong concrete.

5. in the strong concrete precast frame as described in claim 3 or 4, band perps precast shear wall structure, is characterized in that, described strong concrete is C60.