CN205677089U - There is coupled column and the base node structure of horizontal anti-seismic performance - Google Patents

Abstract

This utility model relates to a kind of coupled column with horizontal anti-seismic performance and base node structure, including coupled column and basis, the concrete layer through pouring that connects at node on described coupled column and basis connects as one, two vertical steel plates the most laterally it are embedded with inside described concrete layer, each equal matrix arrangement of vertical surface of steel plate has several studs, described stud passes perpendicularly through vertical surface of steel plate and is welded on vertical steel plate, the both ends of described stud are welded with nut, the perimembranous of described stud be provided with through ultra-high performance concrete pour make in order to the body connected as one with the perimembranous of stud, easy construction, improve coupled column and the intensity in base node and ductility, both may be used in building construction, can be used in bridge, its level is improved to anti-seismic performance.

Description

Composite Column and Foundation Node Structure with Horizontal Seismic Performance

technical field

The utility model provides a combined column and foundation node structure with horizontal seismic performance.

Background technique

At present, the conventional (composite) column-foundation joint construction is mainly to bind the vertical reinforcement and transverse reinforcement of the two and pour them together. Although the joints of this connection method are rigid, their ductility is poor, and the joints are easily damaged under the action of earthquakes, especially the concrete in the column-foundation joint area is easily damaged, resulting in cracking of the concrete protective layer, making its seismic performance insufficient . In addition, in order to ensure the strength and stiffness at the joints, the reinforcement ratio at the joints will be increased accordingly, and the net distance between the steel bars will be reduced at this time. Under the action of strong horizontal loads, once the concrete in the joint area cracks or damage, the nodes are more likely to be damaged. In addition, for the structure of the joint between the single composite column and the foundation, the amount of concrete and steel bars used for the column and the foundation is relatively large, and the vertical steel bars in the column must go deep into the foundation and be bent and anchored after a certain depth, which brings great inconvenience to the construction. Certainly difficult and troublesome.

Utility model content

The purpose of the utility model is to provide a composite column and foundation node structure with horizontal seismic performance against the above deficiencies.

The solution adopted by the utility model to solve the technical problem is a composite column and foundation node structure with horizontal seismic performance, including the composite column and the foundation, and the poured concrete layer at the connection node of the composite column and the foundation is integrated into one, At least two vertical steel plates are buried horizontally inside the concrete layer, and several stud bolts are arranged in a matrix on the surface of each vertical steel plate, and the stud bolts vertically pass through the surface of the vertical steel plate and are welded to the vertical steel plate The two ends of the stud bolts are welded with nuts, and the periphery of the stud bolts is provided with a casing made of ultra-high performance concrete to be connected with the periphery of the stud bolts. .

Further, the cross-sectional shape of the combined column is a rectangle.

Further, the length of the vertical steel plate is 1/3-4/5 of the base height.

Further, the edge of the vertical steel plate is no less than 30mm away from the composite column and the concrete surface of the foundation.

Further, the shape of the vertical steel plates is rectangular, and the vertical steel plates are all parallel to each other.

Compared with the prior art, the utility model has the following beneficial effects: the structure of the composite column with horizontal seismic performance and the foundation node is simple and compact, and by setting the vertical steel plate instead of the traditional steel bar, the gap between the vertical steel plate and the surrounding concrete The friction force and mechanical bite force are relatively large, so that the concrete in the joint area is not easy to be split and damaged, and the contact area with the concrete is increased with the stud bolts, nuts and sleeves, so that the joint has high strength and relatively high strength. Good ductility, with horizontal seismic performance; the utility model is convenient in construction and saves materials, and can be used not only at the joints of composite columns and foundations in building construction, but also at the joints of bridge piers and caps, which has great significance .

Description of drawings

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

Fig. 1 is the structural schematic diagram one of this utility model embodiment;

Fig. 2 is the structural schematic diagram 2 of this utility model embodiment;

Fig. 3 is a structural schematic diagram three of the utility model embodiment;

Fig. 4 is a schematic diagram of the connection relationship between the vertical steel plate, the sleeve body and the stud bolt;

In the picture:

1-composite column; 2-foundation; 3-concrete layer; 4-vertical steel plate; 5-stud bolt; 6-nut; 7-sleeve.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

As shown in Figures 1-4, a composite column and foundation node structure with horizontal seismic performance includes a composite column 1 and a foundation 2, and the poured concrete layer 3 at the connection node of the composite column and the foundation is connected as a whole. At least two vertical steel plates 4 are buried horizontally inside the concrete layer, and several stud bolts 5 are arranged in a matrix on the surface of each vertical steel plate, and the stud bolts pass through the surface of the vertical steel plate vertically and are welded on the vertical On the steel plate, the stud bolt and the vertical steel plate form a rigid body, and the two ends of the stud bolt are welded with nuts 6, which can improve the rigidity of the whole stud bolt. The casing 7 made of ultra-high-performance concrete pouring is used to connect with the periphery of the stud bolt as a whole, and the vertical steel plate effectively connects the composite column and the foundation together to resist horizontal force and earthquake resistance.

In this example, the compressive strength of ultra-high performance concrete is 3-5 times that of ordinary concrete, and its tensile strength is more than 3 times, even similar to the performance of steel bars, and the vertical steel plates consolidated in the composite column and foundation The super-high-performance concrete casing and stud bolts on the top can greatly improve the ductility of the joint. The composite column of the utility model and the joint of the foundation are rigid joints, which can allow about 6mm of slippage at the joint, and have a relatively high performance. Great rigidity and better seismic performance.

In this embodiment, the super high performance concrete casing on the vertical steel plate, the stud bolts, and the frictional force and mechanical bite force between the vertical steel plate and the surrounding concrete fully exert the mechanical properties of the concrete in the node area , while significantly improving the stiffness, seismic performance and ductility at the joints.

In this embodiment, the cross-sectional shape of the combined column is rectangular, and the vertical steel plates are all parallel to each other.

In this embodiment, the length of the vertical steel plate is 1/3-4/5 of the base height.

In this embodiment, the distance between the edge of the vertical steel plate and the concrete surface of the composite column and the foundation is not less than 30 mm.

In this embodiment, the shape of the vertical steel plate is rectangular.

In this embodiment, the length of the vertical steel plate protruding into the centerline of the foundation is not less than 1/10 of the length of the vertical steel plate.

In this embodiment, the construction method of the composite column and foundation node structure with horizontal seismic performance includes the following steps:

(1) Solder spots are reserved on both sides of the vertical steel plate, and several stud bolts are vertically pierced on the surface of the vertical steel plate, and welded at the spot, and several stud bolts fixed on the vertical steel plate are in the form of matrix arrangement;

(2) Insert PVC pipes around the stud bolts on both sides of the vertical steel plate, then use ultra-high performance concrete to pour in the cavity between the stud bolts and the PVC pipe, and properly maintain it. After the ultra-high-performance concrete reaches its strength, the PVC pipe is demolished, and finally the nuts are welded at both ends of the stud bolts;

(3) Fix the vertical steel plates made in steps (1) to (2) at the connection node between the composite column and the foundation, and finally pour the concrete layer on site at the connection node between the composite column and the foundation, and properly maintenance.

In this embodiment, in step (2), the pouring direction of the ultra-high performance concrete is from the surface of the steel plate to the end of the stud bolt.

In this embodiment, two vertical steel plates parallel to each other are buried horizontally inside the concrete layer, and several stud bolts are evenly distributed in each of the vertical steel plates, and the several stud bolts are arranged in five rows and two The matrix arrangement of columns; the distribution and number of vertical steel plates and stud bolts is only an embodiment of the present utility model, and the corresponding vertical steel plates, vertical The distribution and number of the stud bolts on the steel plate are also different, the vertical steel plate of the present invention, and the distribution and number of the stud bolts on the vertical steel plate are not limited thereto.

In this embodiment, vertical steel plates are used to connect the joints between the composite column and the foundation. Several stud bolts are arranged in a matrix at appropriate positions on both sides of the vertical steel plate, and nuts are welded at both ends of the stud bolts. The periphery of the stud bolts is provided with a casing made of ultra-high-performance concrete pouring to connect with the periphery of the stud bolts. The casing is made of ultra-high-performance concrete, whether it is tensile or compressive. The strength has been significantly improved, all of which are 3-5 times the strength of ordinary concrete; the composite column and foundation node structure with horizontal seismic performance can not only replace the vertical and transverse steel bars used in the traditional connection between composite columns and foundations, simplify Its cumbersome structure, and to a certain extent, improve the bearing capacity of the joint between the composite column and the foundation, especially the horizontal resistance has been significantly improved; secondly, the friction force and mechanical bite force between the vertical steel plate and the surrounding concrete have improved The working performance of the concrete in the joint area of the composite column and the foundation makes the concrete play a greater role, while the concrete at the joint of the composite column and the foundation in the traditional way is prone to splitting damage due to the large horizontal load; in addition, the consolidation in the vertical The ultra-high performance concrete casing and stud bolts on the steel bars can make the joints have higher strength and better ductility, and reduce the risk factor of the superstructure. Once the ductility of the joints increases, the superstructure will not It will be easily damaged or collapsed, providing more rescue time for earthquake relief; the invention has the advantages of convenient construction, material saving, and significantly improved strength and ductility on the composite column and foundation joints, and can be used for composite columns and foundation joints in building construction It can also be used at the node of the middle pier and cap of the bridge, which has great significance.

The above preferred embodiments have further described the purpose, technical solutions and advantages of the utility model in detail. It should be understood that the above descriptions are only preferred embodiments of the utility model and are not intended to limit the utility model. For new models, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (5)

1. a coupled column with horizontal anti-seismic performance and base node structure, it is characterised in that: include coupled column and basis, The concrete layer through pouring that connects at node on described coupled column and basis connects as one, at least horizontal inside described concrete layer To being embedded with two vertical steel plates, each equal matrix arrangement of vertical surface of steel plate has several studs, described double end spiral shell Bolt passes perpendicularly through vertical surface of steel plate and is welded on vertical steel plate, and the both ends of described stud are welded with nut, described The perimembranous of stud be provided with through ultra-high performance concrete pour make in order to connect as one with the perimembranous of stud Body.

The coupled column with horizontal anti-seismic performance the most according to claim 1 and base node structure, it is characterised in that: institute The cross sectional shape stating coupled column is rectangle.

The coupled column with horizontal anti-seismic performance the most according to claim 1 and base node structure, it is characterised in that: institute State the 1/3-4/5 of a length of height of foundation of vertical steel plate.

The coupled column with horizontal anti-seismic performance the most according to claim 1 and base node structure, it is characterised in that: institute State the Edge Distance coupled column of vertical steel plate and the concrete surface top layer on basis not less than 30mm.

The coupled column with horizontal anti-seismic performance the most according to claim 1 and base node structure, it is characterised in that: institute State the rectangle that is shaped as of vertical steel plate, the most parallel to each other between vertical steel plate.