CN203296203U - Reinforced-concrete-fitted seismic isolation node and fitted seismic isolation structure with reinforced-concrete-fitted seismic isolation node - Google Patents

Abstract

The utility model relates to a reinforced concrete assembly type seismic isolation node, which comprises a prefabricated column, a seismic isolation support column head, and a prefabricated beam; The cross-sectional area, and the prefabricated column is fixed on the upper end surface of the shock-isolation bearing column head; there is a seam between the earthquake-isolation support column head and the prefabricated beam, and the part of the earthquake-isolation support column head and the seam is stepped, The end of the prefabricated beam connected to the joint is provided with a triangular groove shear key; it also includes the concrete poured in the joint and above the prefabricated beam. The prefabricated joint can achieve similar seismic performance to the cast-in-place concrete structure, and the connection between its components is reliable. The utility model also relates to a prefabricated shock-isolation structure, which includes a reinforced concrete prefabricated shock-isolation node and a shock-isolation support, and the shock-isolation support is fixedly connected to the lower end of the column head of the shock-isolation support.

Description

Reinforced concrete prefabricated seismic-isolation node and prefabricated seismic-isolation structure with this node

technical field

The utility model relates to the field of construction, in particular to a reinforced concrete assembly type shock-isolation node with a shock-isolation support column head; the utility model also relates to an assembly type shock-isolation structure with the node.

Background technique

Prefabricated concrete structure has significant advantages such as saving materials, reducing energy consumption, being conducive to environmental protection, improving building quality, shortening construction period, improving labor productivity and comprehensive economic benefits, and promoting and building industrialization. At present, in developed countries in Europe and the United States, prefabricated concrete structures have become the main form of new buildings. Prefabricated concrete structures can be divided into two types: assembly integral type (post-cast integral type) and fully assembled type. In general, the assembled monolithic prefabricated concrete structure can achieve the same or approximately the same seismic performance of the cast-in-place concrete structure, but the problem is how to ensure the reliable connection between its components and enhance the integrity and seismic performance of the structure. Scholars and engineers at home and abroad have made unremitting research and exploration on prefabricated concrete structures.

The application of advanced seismic isolation and shock absorption technology in modern prefabricated industrial buildings not only meets the increasing requirements of the commercialization of residential buildings in our country, but also meets the needs of owners for the continuous improvement of seismic safety of residential products, representing the future of residential construction in my country. One of the important development directions, with important milestone significance and broad market prospects.

Utility model content

The utility model provides a reinforced concrete assembly type shock-isolation node, which can achieve the seismic performance similar to that of a cast-in-place concrete structure, and the connection between its components is reliable.

The utility model reinforced concrete assembly type shock-isolation node adopts the following technical solutions:

A reinforced concrete assembly type seismic isolation node, comprising a prefabricated column, a seismic isolation support column head, and a prefabricated beam; the cross-sectional area of the prefabricated column is smaller than that of the seismic isolation support column head, and the prefabricated column is fixed on the seismic isolation support The upper end face of the column head; there is a seam between the column head of the seismic isolation bearing and the prefabricated beam, the part of the column head of the seismic isolation bearing connected to the joint is in the shape of a ladder, and the end of the prefabricated beam connected to the joint is provided with a triangular Grooved shear key; also includes concrete poured in joints and over precast beams.

As a further improvement of the utility model, the column head of the shock-isolation support includes a shoulder connected to the seam, the outer end of the shoulder is stepped, and the lower end surface of the shoulder is on the same level as the lower end surface of the prefabricated beam.

As a further improvement of the utility model, the upper end surface of the shoulder is located on the same level as the upper end surface of the column head of the shock-isolation support.

The utility model also provides a prefabricated seismic isolation structure, the prefabricated seismic isolation structure includes the above-mentioned reinforced concrete prefabricated seismic isolation node and a seismic isolation support, and the seismic isolation support is fixedly connected with the lower end of the column head of the seismic isolation support .

The part where the column head of the seismic isolation support of the reinforced concrete assembly type seismic isolation node of the utility model connects with the joint is in the shape of a ladder, and the end of the prefabricated beam connected with the joint is provided with a triangular groove shear key, then the concrete is poured on the joint After the seam, the corresponding stepped part and triangular groove shear key will also be formed, which is beneficial to the combination of the post-cast concrete and the column head of the seismic isolation bearing and the prefabricated beam, so that the post-cast concrete and the seismic isolation bearing The connection between the column head and the prefabricated beam is reliable, and at the same time, the shear bearing capacity at the combined end face of the prefabricated beam is also strengthened. Concrete is also poured above the prefabricated beams, which can further strengthen the combination between the prefabricated beams and the post-cast concrete.

Description of drawings

Fig. 1 is a structural schematic diagram of one embodiment of the reinforced concrete prefabricated seismic isolation node of the present invention (reinforcing bars are not drawn).

Fig. 2 is a structural schematic diagram of the prefabricated column in Fig. 1 .

Fig. 3 is a structural schematic diagram of the prefabricated beam in Fig. 1 .

Fig. 4 is a structural diagram of an embodiment of the prefabricated seismic isolation structure of the present invention.

In the figure: 1- prefabricated column, 2- column head of seismic isolation bearing, 3- prefabricated beam, 4- triangular groove shear key, 5- concrete, 7- first longitudinal reinforcement, 8- second longitudinal reinforcement, 9- Shock-isolation bearing, 10-shoulder.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Figures 1 to 3 show the embodiment of the reinforced concrete prefabricated seismic isolation node of the present invention.

As shown in Figure 1, the reinforced concrete prefabricated seismic isolation node includes a prefabricated column 1, a seismic isolation support column head 2, and a prefabricated beam 3; the cross-sectional area of the prefabricated column 1 is smaller than that of the seismic isolation support column head 2, The prefabricated column 1 is fixed on the upper end surface of the seismic isolation bearing column head 2, and the prefabricated column 1 and the seismic isolation bearing column head 2 are integrally prefabricated; the seismic isolation bearing column head 2 includes a shoulder 10, and the outer end of the shoulder 10 is Ladder shape; there is a seam between the shoulder 10 and the prefabricated beam 3, and one end of the prefabricated beam 3 connected to the seam is provided with a triangular groove shear key 4, and the lower end surface of the shoulder 10 is connected to the prefabricated beam 3 The lower end surface of the lower end surface is located on the same horizontal plane; it also includes the concrete 5 poured in the joint and above the prefabricated beam 3 .

As shown in FIG. 2 , the upper end surface of the shoulder 10 is located on the same level as the upper end surface of the column head 2 of the shock-isolation support. The column head 2 of the shock-isolation support is provided with a number of longitudinal bars, stirrups, and steel mesh pieces, and the outer side of the shoulder 10 is provided with an outstretched first longitudinal bar 7 .

As shown in Figure 3, the prefabricated beam 3 is provided with several longitudinal reinforcements and stirrups, and the upper part of the longitudinal reinforcements and stirrups is exposed, so that the concrete 5 and the prefabricated beam 3 poured on the top of the prefabricated beam 3 are more firmly connected. combine together. The outer side of the triangular groove shear key 4 of the prefabricated beam 3 is provided with an outstretched second longitudinal reinforcement 8. When the prefabricated beam 3 and the prefabricated column 1 are assembled, the first longitudinal reinforcement 7 and the second longitudinal reinforcement 8 are lap welded. connect.

The upper end surface of the post-cast concrete 5 and the upper end surface of the column head 2 of the shock-isolation support are located on the same horizontal plane.

Fig. 4 shows an embodiment of the assembled seismic isolation structure of the present invention. The prefabricated seismic isolation structure includes a reinforced concrete prefabricated seismic isolation node and a seismic isolation support 9 . The reinforced concrete prefabricated seismic isolation node is exactly the same as the first embodiment of the reinforced concrete prefabricated seismic isolation node of the present invention, and will not be described in detail here. The lower end of the column head 2 of the shock-isolation support is connected with the rubber pad of the shock-isolation support 9 through bolts, and the two can work together well.

Under the action of an earthquake, the prefabricated seismic isolation structure, the seismic isolation support 9 is in a translational state as a whole, and the upper pier of the seismic isolation support 9 cannot transmit bending moment, but can only bear the axial force in the vertical direction and the horizontal shear force .

The above-mentioned embodiments only express some implementations of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the present utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (6)

1. A reinforced concrete assembly type seismic isolation node is characterized in that: it comprises a prefabricated column, a seismic isolation bearing capital, and a prefabricated beam; the cross-sectional area of the prefabricated column is less than the cross-sectional area of the seismic isolation bearing capital, and It is fixed on the upper end face of the column head of the seismic isolation bearing; there is a seam between the column head of the seismic isolation bearing and the prefabricated beam, and the part of the column head of the seismic isolation bearing connected to the joint is stepped, and the prefabricated beam is connected to the joint One end of the joint is provided with a triangular recessed shear key; it also includes the concrete poured in the joint and above the precast beam. 2. The reinforced concrete prefabricated seismic isolation node according to claim 1, characterized in that: the column head of the seismic isolation bearing includes a shoulder connected to the joint, the outer end of the shoulder is stepped, and the lower end surface of the shoulder is in contact with the joint. The lower end faces of the prefabricated beams are located on the same horizontal plane. 3. The reinforced concrete prefabricated seismic isolation node according to claim 2, characterized in that: the upper end surface of the shoulder and the upper end surface of the column head of the seismic isolation support are located on the same horizontal plane. 4. The reinforced concrete prefabricated seismic isolation node according to claim 3, characterized in that: the prefabricated beam is provided with longitudinal bars and stirrups, and at least part of the upper part of the longitudinal bars and stirrups is exposed; the upper part of the post-cast concrete The end face is located on the same level as the upper end face of the column head of the seismic isolation support. 5. The reinforced concrete prefabricated seismic isolation node according to any one of claims 2 to 4, characterized in that: the outer side of the shoulder is provided with an outstretched first longitudinal reinforcement, and the triangular groove shear key of the prefabricated beam The outer side is provided with a second longitudinal rib extending outward, and the first longitudinal rib and the second longitudinal rib are connected by lap welding. 6. A prefabricated seismic isolation structure, characterized in that it comprises the reinforced concrete prefabricated seismic isolation node and the seismic isolation support according to any one of claims 1 to 5, and the seismic isolation support and the seismic isolation support The lower end of the stigma is fixedly connected.

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