CN203701350U - Self-reset energy consumption node for aerated concrete externally hanging wallboard - Google Patents

Abstract

The utility model discloses a self-resetting energy-consuming node of an aerated concrete external wall panel, which comprises a steel hoop and a connecting piece, the steel hoop is set around the inner and outer surfaces of the aerated concrete external wall panel, and the hoop is tightened. The air-concrete external wall panel forms a whole; two connecting pieces are respectively fixed on the upper and lower parts of the steel hoop facing the indoor surface, the connecting piece has a horizontal part and a vertical part perpendicular to each other, and the vertical part is fixed to the steel hoop The horizontal part is provided with a long hole parallel to the vertical part, and the connecting bolt passes through the long hole to fix the connecting piece on the opposite surfaces of two adjacent frame beams of the building. The utility model uses steel hoops to clamp and fix the aerated concrete external wall panels, which can effectively avoid the stress set damage caused by methods such as punching and pre-embedding to the aerated concrete walls, and the aerated concrete external wall panels can be used during earthquakes. It can slide freely with the deformation between layers, consume seismic energy, make the connecting nodes not easy to damage, and have better seismic performance.

Description

Self-resetting energy-dissipating nodes of air-entrained concrete external wall panels

technical field

The utility model relates to an aerated concrete external wallboard, in particular to a self-resetting energy-consuming node of an aerated concrete external wallboard.

Background technique

Compared with the brick wall structure, the prefabricated wall structure has the advantages of good integrity and light structure, which can increase the effective use area of the building, reduce on-site wet work, and reduce labor costs. In particular, it can shorten the construction period and improve labor costs. Productivity. Therefore, prefabricated walls are one of the important ways to reform the walls and improve the level of industrialization of buildings.

With the rapid development of high-rise and super high-rise buildings in my country and the deepening of wall reform, aerated concrete external wall panels are widely used in industrial buildings and civil buildings. Autoclaved aerated concrete is a kind of porous lightweight concrete. It is a new type of building material made of siliceous materials and calcium materials as the main raw materials, adding an appropriate amount of foaming agent for autoclaving and curing. Compared with other materials, it has It has the advantages of light weight, high strength, small elastic modulus, and good thermal insulation performance.

Although the external wall panel is used as a non-load-bearing component in the main structure of the building, it still has an important influence on the mechanical performance of the main structure of the building. Especially under the action of an earthquake, the external hanging wall may fall off and collapse, causing serious earthquake damage. my country is one of the countries with the most severe earthquake disasters in the world. 80% of large and medium-sized cities are in seismic fortified areas, so the seismic performance is an important factor that must be considered for external wall panels. Air-entrained concrete external wall panels are usually connected to the main structure of the building by connecting nodes. The connection node is an important part of the prefabricated wall. Its function is to connect the external wall panel and the main structure of the building as a whole and transmit the internal force. The main forms are steel pipe anchor nodes, HDR steel anchor nodes, diagonal handle connection nodes, Hook bolt nodes, etc. These connection methods usually need to punch or drill holes in the air-entrained concrete, which is likely to cause damage and stress concentration of the air-entrained concrete wall. The shear performance of air-entrained concrete is poor. Under the condition of large interlayer deformation, the failure form of air-entrained concrete wall is often the punching failure or shear failure caused by the stress concentration at the connection node, which causes the external wall panel to fail in the earthquake. It is easy to fall off directly during the process and cause serious disasters, and the nodes cannot be repaired.

To sum up, there are certain defects in the widely used connection mode of air-entrained concrete external wall panels and the main structure of buildings, which limits the application of air-entrained concrete walls in high-rise residential buildings. Therefore, it is necessary to design a new connection node to overcome the technical shortcomings in the existing aerated concrete wall connection process.

Utility model content

The technical problem to be solved by the utility model is that the connection node connecting the aerated concrete external wall panel and the main structure of the building is easily damaged, and the seismic performance is poor.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is to provide a self-resetting energy-consuming node of an aerated concrete external wall, including:

Steel hoops are set around the inner and outer surfaces of the aerated concrete wall panels, and the aerated concrete wall panels are tightened to increase the overall performance of the aerated concrete walls;

Two connecting pieces are respectively fixed on the surface of the steel hoop facing the inner side of the room, the connecting pieces are respectively located at the upper part and the lower part of the steel hoop, and the connecting pieces have a horizontal part and a vertical part perpendicular to each other , the vertical part is fixed with the steel hoop, the horizontal part is provided with a long hole parallel to the vertical part, and the connecting bolt passes through the long hole to fix the connecting piece on the adjacent building On opposite sides of two frame beams.

In the above-mentioned self-resetting energy-dissipating node, two elastic energy-dissipating elements are arranged in the long hole, and the two elastic energy-dissipating elements are respectively fixed to the connecting bolts and the inner walls at both ends of the long hole.

In the above-mentioned self-resetting energy-dissipating node, the connecting piece is an angle steel.

In the above self-resetting energy dissipation node, the elastic energy dissipation element is a spring device.

In the above self-resetting energy-dissipating node, the steel hoop is a ring-shaped structure formed by bending the slats, and its two free ends are respectively bent outward at the junction to form two opposite fastening plates. There are relatively through holes on the fastening plate, and the annular structure is looped on the inner and outer surfaces of the aerated concrete external wall panels, and the steel hoop is clamped by the fastening bolts to the aerated concrete external wall panels to form A whole.

The utility model uses steel hoops to clamp and fix the aerated concrete external wall boards, which can effectively avoid damage due to stress concentration such as punching and pre-embedding, and the steel hoops increase the overall performance of the aerated concrete walls; the aerated concrete external walls The plate is fixed on the main beam structure of the building by the connecting bolts passing through the long holes on the connecting piece, which can be regarded as a "flexible connection" and has the function of energy consumption, so the connecting node is not easy to be damaged, and the seismic performance is better.

In addition, there are two elastic energy-dissipating elements in the long hole to form a self-resetting energy-dissipating device. While effectively transferring the load of the air-entrained concrete external wallboard to the main structure, the self-resetting energy-dissipating device has a function in the structure during the earthquake. When there is a large inter-story displacement, it can coordinate the influence of inter-story deformation on the external hanging aerated concrete wall, dissipate the seismic energy transmitted from the main structure to the wall, and realize the automatic reset of the wall after the earthquake, without replacing parts , which can meet the next use and save costs.

Description of drawings

Fig. 1 is a schematic diagram of the self-resetting energy-consuming node structure of the aerated concrete external wallboard in the utility model;

Fig. 2 is the schematic diagram of upper connector in the utility model;

Fig. 3 is the installation schematic diagram of aerated concrete external wall panel in the utility model;

Fig. 4 is a structural schematic diagram of the steel hoop in the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

As shown in FIG. 1 , the self-resetting energy-dissipating node of the aerated concrete external wall panel provided by the utility model includes a steel hoop 10 , upper and lower connectors 20 , 30 and two connecting bolts 40 .

Steel hoops 10 are set on the inner and outer surfaces of the aerated concrete external wall panels 50, and the aerated concrete external wall panels 50 are tightly hooped to form a whole;

The upper and lower connectors 20 , 30 are respectively fixed on the surface of the steel hoop 10 facing the indoor side, and the upper and lower connectors 20 , 30 are respectively located at the upper and lower parts of the steel hoop 10 .

As shown in Figure 2, the upper and lower connectors 20, 30 have the same structure, and the upper connector 20 is an example. The upper connector 20 has a horizontal portion 21 and a vertical portion 22 perpendicular to each other, and the vertical portion 22 is connected to the steel hoop 10. Fixed, the horizontal part 21 is provided with a long hole 23 parallel to the vertical part.

The position of the upper connector 20 corresponds to the upper frame beam 51 of the building, the position of the lower connector 30 corresponds to the lower frame beam 52 of the building, and the connecting bolt 40 passes through the corresponding long hole to connect the upper and lower connectors 20. , 30 are respectively fixed on the bottom surface and the top surface of the upper and lower floor frame beams 51,52 of the building. Specifically, it is fixed on the bottom surface of the upper frame beam 51 by the connecting bolt 40 passing through the long hole on the upper connecting piece 20, and it is fixed on the lower frame by passing the connecting bolt 40 through the long hole on the lower connecting piece 30. on the top of the beam 52. The upper and lower connectors 20, 30 are provided with a certain distance (half the height of the frame beam) from the upper and lower edges of the aerated concrete external wall panels 50 to ensure the perfect butt joint of the upper and lower aerated concrete external wall panels. The gap between the upper and lower aerated concrete external wall panels is very small.

As shown in Figure 3, in order to realize the automatic reset function of the self-resetting energy-dissipating node, two elastic elements 41 are arranged in the long hole to form a self-resetting energy-dissipating device. The inner wall is fixed.

In this embodiment, the upper and lower connectors 20 and 30 are made of angle steel, the elastic element 41 is made of springs, and the aerated concrete external wall panels 50 are installed longitudinally.

As shown in Figure 4, the steel hoop 10 is an annular structure 11 formed by bending a plate, and its two free ends are respectively bent outward at the junction to form two oppositely arranged first and second fastening plates 12 , 13, the first and second fastening plates 12, 13 are provided with relative through-holes 14, and the annular structure 11 is looped on the inner and outer surfaces of the aerated concrete external wall panel 40, and is tightened by tightening the fixing bolts Fasten the first and second fastening plates 12 and 13, so that the steel hoop 10 clamps the aerated concrete external wall panel 40 to form a whole, ensuring that the steel hoop 10 will not fall off, and increases the integrity of the aerated concrete external wall panel. performance.

Among them, the first fastening plate 12 is provided with multiple rows of through holes 14, and the second fastening plate 13 is provided with a row of through holes 14. By selecting different rows of the first and second fastening plates 12 and 13 Fixing is carried out through the through hole, so that the steel hoop 10 can exert a step-adjustable fastening force on the aerated concrete external wall panel.

In the utility model, the steel hoop 10 is used to clamp the aerated concrete external wall panel 40, which can effectively avoid damage caused by stress concentration such as punching and pre-embedding, and the aerated concrete external wall panel can be hoisted by the steel hoop Or move, which greatly facilitates the construction.

The connecting bolt 40 fixes the upper and lower connectors 20, 30 on the main structure of the building (embedded parts are arranged at the corresponding positions on the main structure of the building). Sliding, therefore, can be regarded as a "flexible connection" and has a small energy-dissipating function. The upper and lower connecting parts 20, 30 only bear horizontal loads and not vertical loads. The upper and lower connectors 20, 30 can effectively transfer the load of the air-entrained concrete external wall panel 50 to the main structure, and at the same time coordinate the interstory displacement of the main structure. The vertical parts of the upper and lower connectors 20, 30 are fixed together with the air-entrained concrete wall panel 50. When an earthquake strikes, the air-entrained concrete wall panel 50 can slide freely, and friction will be generated while sliding to consume part of the seismic energy. .

The method of using the above-mentioned self-resetting energy-consuming nodes to construct external wall panels of aerated concrete is as follows:

First, set the steel hoop 10 around the inner and outer surfaces of the aerated concrete wallboard 50, and tighten the aerated concrete wallboard 50 to form a whole;

The upper and lower parts of the steel hoop 10 facing the indoor surface are respectively welded and fixed with a connecting piece (∠100mm×100mm×10mm hot-rolled equilateral angle steel), wherein the angle steel is pre-drilled on one side with a length of 60mm×14mm hole, and then weld the other side of the angle steel with the hoop;

The length of the steel hoop 10 is 600mm, the width is 120mm, and the height is 300mm. The thickness of the steel hoop 10 is 10mm. The two workpieces are connected into one by the welding seam to ensure the overall strength and stability of the angle steel and the steel hoop 10.

The air-entrained concrete external wall panel 50 is an A2.5-strength aerated concrete external wall panel with a size of 600mm×300mm×1500mm, and the connecting bolt 40 is M15mm×30mm. This node can slip in the plane. When the load When it is too large, the connecting piece can produce slippage to protect the aerated concrete external wall panel.

The slotted hole 20 is provided with a self-resetting energy dissipation device formed by two spring devices. One end of the spring device is fixed with the connecting bolt, and the other end is fixed with the side walls at the two ends of the slotted hole. Reduce the seismic energy transmitted to the air-entrained concrete external wall panels to avoid damage to the air-entrained concrete external wall panels. After the earthquake, due to the recovery effect of the spring device, the "swaying" aerated concrete external wall panels in the earthquake are forced to reset automatically.

Steel hoops should be sprayed with fireproof paint for protection.

The scheme provided by the utility model has the following remarkable advantages:

(1) It can conveniently realize the connection of the external aerated concrete wall panels, and has a large inter-story displacement value during an earthquake, so as to protect the external aerated concrete wall from being damaged during an earthquake.

(2) The steel hoop can restrain the aerated concrete wall, increase the overall performance of the wall, and make the mechanical performance of the aerated concrete wall more reasonable; the hoisting or moving of the wall can be carried out through the steel hoop, which is convenient for construction and hoisting. The construction period is shortened, which is suitable for the promotion of industrialized housing.

(3) During an earthquake, due to the deformation of the self-resetting energy dissipation device, the energy transmitted to the wall will be reduced to avoid damage to the wall. After the earthquake, due to the recovery effect of the spring device, the "swaying" aerated concrete external wall panels in the earthquake are forced to reset automatically.

(4) There is no need to replace parts, which can meet the next use and save costs.

The utility model is not limited to the above-mentioned best implementation mode, anyone should know that the structural changes made under the enlightenment of the utility model, all technical solutions that are the same as or similar to the utility model, all fall under the protection of the utility model within range.

Claims (5)

1. The self-resetting energy-dissipating node of the aerated concrete external wall panel is characterized in that it includes: Steel hoops are set around the inner and outer surfaces of the aerated concrete external wall panels, and the aerated concrete external wall panels are tightly hooped; Two connecting pieces are respectively fixed on the surface of the steel hoop facing the indoor side, the connecting pieces are respectively located at the upper part and the lower part of the steel hoop, the connecting pieces have a horizontal part and a vertical part perpendicular to each other, and the vertical part The straight part is fixed with the steel hoop, the horizontal part is provided with a long hole parallel to the vertical part, and the connecting bolt passes through the long hole to fix the connecting piece on two adjacent frame beams of the building on the opposite side. 2. The self-resetting energy-dissipating node according to claim 1, wherein two elastic energy-dissipating elements are arranged in the long hole, and the two elastic energy-dissipating elements are respectively connected with the connecting bolt and the The inner walls at both ends of the slot are fixed. 3. The self-resetting energy-dissipating node according to claim 1, wherein the connecting piece is an angle steel. 4. The self-resetting energy dissipation node according to claim 2, wherein the elastic energy dissipation element is a spring device. 5. The self-resetting energy-dissipating node according to claim 1, wherein the steel hoop is an annular structure formed by bending a lath, and its two free ends are respectively bent outwards at the junction to form two two oppositely arranged fastening plates, the fastening plates are provided with relative through-holes, the ring-shaped structure is looped on the inner and outer surfaces of the aerated concrete external wall panels, and is fastened by fastening bolts Fix the board, clamp the steel hoop to the aerated concrete external wall board to form a whole.