CN209082693U - Prestressing without bondn assembling type node with energy-consuming device - Google Patents

Abstract

The utility model relates to an unbonded prestressed assembled node with an energy dissipation device, which comprises a precast concrete column and a prefabricated concrete beam that are vertically connected. One end of the bellows damper is fixedly connected to the side wall of the precast concrete column, and the other end of the bellows damper is fixedly connected to the end of the precast concrete beam; The reinforcement is passed through the middle of the bellows damper. The assembled node of the utility model has the characteristics of high energy consumption capacity, good ductility, good shock absorption effect, and at the same time, the collision of beams and columns can be avoided; and the construction is simple, easy to realize, low in cost, small in occupied building space, and does not affect the building. space efficiency.

Description

Unbonded Prestressed Fabricated Nodes with Energy Dissipators

technical field

The utility model relates to an unbonded prestressed assembled node with an energy dissipation device.

Background technique

Construction industrialization is one of the development trends of contemporary construction technology, and vigorously developing prefabricated buildings is the only way to realize construction industrialization. Although the prefabricated concrete structure has many advantages and good development prospects, due to the poor connection reliability of the prefabricated structure nodes, it is often difficult to meet the force requirements under repeated loads, so the use in earthquake areas is limited. On the other hand, applying prestressing technology to prefabricated concrete structures, through pre-compressed connections in the node area, forms integral stress nodes and continuous stress frames, which improves the seismic performance of prefabricated structures and makes prefabricated structures in earthquake zones. better application.

The prestressed prefabricated structure is a new type of building structure. The prestressed connection methods in the prefabricated structure can be divided into two ways: bonding prestressed rib connection and unbonded prestressed rib connection. Among them, the prestressed concrete frame with bonded prestressed tendons may deform plastically under repeated loads, resulting in loss of prestressed or even complete loss. Therefore, the nodes of the prefabricated prestressed concrete frame are usually connected by unbonded prestressed tendons. The non-bonded prestressed prefabricated structure has the advantages of fast construction speed, saving building materials, and strong self-resetting ability. However, this structural system has weaknesses such as low energy consumption and large earthquake response.

Patent document CN104032840A adds energy-consuming angle steel at the node, which can effectively improve the energy-dissipation capacity. However, since there is no vibration isolator at the beam-column connection, the beam-column collision cannot be avoided, resulting in early failure of the node. In the patent document CN106836479A, a corbel is added to the lower column, which can improve the seismic performance of the joint, but the additional corbel occupies a large building space and affects the use efficiency of the building space. Patent document CN105525679A adds energy-consuming rods and corbels, and cast-in-place concrete on the upper floor slab can enhance energy-dissipation capacity and achieve graded shock absorption and energy consumption, but the construction is complicated, the site is not easy to operate, and the cost is high.

Utility model content

In view of this, the purpose of the present utility model is to provide an unbonded prestressed assembled node with an energy dissipation device, which is easy to construct, has high energy dissipation capacity, good shock absorption effect, and occupies a small building space.

The utility model adopts the following scheme to realize: an unbonded prestressed assembled node with an energy dissipation device, comprising a precast concrete column and a precast concrete beam vertically connected, and the end of the precast concrete beam and the side wall of the precast concrete column pass through The bellows damper is connected, one end of the bellows damper is fixedly connected to the side wall of the precast concrete column, and the other end of the bellows damper is fixedly connected to the end of the precast concrete beam; the precast concrete beam and the precast concrete column are pierced with the same prestressed Reinforcing bars, prestressed reinforcing bars pass through the middle of the bellows damper.

Further, one end of the bellows damper is provided with a trough-shaped steel plate that is fixedly connected to the precast concrete beam, the trough-shaped steel plate is buckled on the end of the precast concrete beam, and the other end of the bellows damper is provided with a precast concrete column. Fixed connection of flat steel plates.

Further, an angle steel supporting the channel-shaped steel plate and the flat steel plate is arranged below the bellows damper, and the angle steel is fixedly connected to the side surface of the precast concrete column.

Further, the prefabricated concrete columns are provided with anchoring steel bars for fixing angle steel and flat steel plates; the ends of the precast concrete beams are provided with anchoring steel bars for connecting trough-shaped steel plates, and anchoring steel bars for connecting trough-shaped steel plates. After the two ends pass through the two side plates of the grooved steel plate, they are locked by high-strength nuts.

Further, the prefabricated concrete column is vertically connected with the prefabricated concrete beam on one side, and the side of the prefabricated concrete column facing away from the prefabricated concrete beam is provided with a connecting steel plate, and between the flat steel plate and the connecting steel plate and between the angle steel and the connecting steel plate, through the connecting plate. The anchoring steel bars on the precast concrete columns are fixedly connected. One end of the anchoring steel bars passes through the connecting steel plate and is locked by the high-strength nut, and the other end of the anchoring steel bars passes through the angle steel or flat steel plate and is locked by the high-strength nut.

Further, the prefabricated concrete column is vertically connected to the prefabricated concrete beams on both sides, and the angle steel on both sides and the plane steel plate on both sides are fixedly connected by anchoring steel bars pierced on the prefabricated concrete column, and the ends of the anchoring steel bars are pierced. After connecting angle steel or flat steel plate, it is locked by high-strength nut.

Further, the inside of the bellows damper is filled with rubber.

Compared with the prior art, the utility model has the following beneficial effects: the assembled node of the utility model has the characteristics of high energy consumption capacity, good ductility, good shock absorption effect, and can avoid beam-column collision at the same time; and the construction is simple, It is easy to implement, has low cost, occupies small building space, and does not affect the use efficiency of building space.

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below through specific embodiments and related drawings.

Description of drawings

FIG. 1 is a schematic diagram of the structure of a side node according to Embodiment 1 of the present invention;

2 is a schematic diagram of the structure of an intermediate node in Embodiment 2 of the present invention;

Description of the numbers in the figure: 100-precast concrete column, 110-connecting steel plate, 200-precast concrete beam, 300-bellows damper, 310-channel steel plate, 320-flat steel plate, 400-prestressed steel bar, 500-angle steel, 600-Anchor steel bars, 700-High-strength nuts.

Detailed ways

Embodiment 1: As shown in FIG. 1, an unbonded prestressed prefabricated node with energy dissipation device includes vertically connected precast concrete columns 100 and precast concrete beams 200. The precast concrete beams 200 are connected vertically, that is, the connection nodes between the precast concrete columns 100 and the precast concrete beams 200 are edge nodes. One end of the tube damper 300 is fixedly connected to the side wall of the precast concrete column 100, and the other end of the bellows damper 300 is fixedly connected to the end of the precast concrete beam 200; The prestressed steel bar 400 passes through the middle of the bellows damper, one end of the prestressed steel bar is anchored at the far end of the precast concrete beam 200, and the other end of the prestressed steel bar is anchored on the side of the precast concrete column away from the precast concrete beam.

In the node structure of the utility model, the bellows damper is placed between the column and the beam, so that the damper can not only achieve the purpose of energy consumption, but also act as a spring to achieve the purpose of shock absorption, and can also play the role of vibration isolation. At the same time, it can avoid the collision between the column and the beam, which will cause the concrete to crush and fail in advance. Therefore, the assembled node of the utility model has the characteristics of high energy consumption capacity, good ductility, good shock absorption effect, and at the same time, the collision of beams and columns can be avoided; and the construction is simple, easy to realize, low in cost, small in occupied building space, and does not affect the Efficiency in the use of building space.

In this embodiment, in order to facilitate the connection between the bellows damper and the precast concrete column and the precast concrete column, the bellows damper is made of mild steel, and one end of the bellows damper 300 is provided with a connection with the precast concrete column. The trough-shaped steel plate 310 fixedly connected to the beam, the trough-shaped steel plate 310 is buckled on the end of the precast concrete beam, and the other end of the bellows damper 300 is provided with a flat steel plate 320 that is fixedly connected to the precast concrete column; the bellows damper 300 The two ends of the steel plate are respectively connected with the grooved steel plate 310 and the flat steel plate 320 through flanges, and welding can also be used.

In this embodiment, in order to ensure the bearing capacity at the nodes, an angle steel 500 supporting the channel-shaped steel plate 310 and the flat steel plate 320 is provided below the bellows damper 300. The angle steel 500 is fixedly connected to the side of the precast concrete column, and the angle steel Also play a certain role in energy consumption.

In this embodiment, the prefabricated concrete column 100 is provided with anchoring steel bars 600 for fixing the angle steel 500 and the flat steel plate 320; The two ends of the anchoring steel bars used to connect the grooved steel plates 310 pass through the two side plates of the grooved steel plates and are locked by high-strength nuts 700. The ends of the anchoring steel bars are provided with external threads; prefabricated concrete columns and prefabricated concrete beams are reserved on There are channels for passing prestressed steel bars and anchoring steel bars, and the channels are formed by PVC pipes embedded in precast concrete columns and precast concrete beams.

In this embodiment, a connecting steel plate 110 is provided on the side of the precast concrete column 100 away from the prefabricated concrete beam, and between the flat steel plate 320 and the connecting steel plate 110 and between the angle steel 500 and the connecting steel plate 110 are anchored through the prefabricated concrete column. The steel bars are fixedly connected, one end of the anchoring steel bar passes through the connecting steel plate 110 and is locked by a high-strength nut, and the other end of the anchoring steel bar passes through an angle steel or a flat steel plate and is locked by a high-strength nut.

In this embodiment, in order to provide the performance of the bellows damper, the inside of the bellows damper is filled with rubber.

In this embodiment, the two side plates of the channel steel plate, the plane steel plate and the connecting steel plate are all provided with through holes for the anchoring steel bars to pass through.

Embodiment 2: As shown in FIG. 2 , in this embodiment, the precast concrete column is vertically connected to the precast concrete beams on both sides, and the precast concrete column is located in the middle of the precast concrete beams on both sides, that is, the precast concrete column 100 The connection nodes with the two precast concrete beams 200 are intermediate nodes, and the intermediate nodes do not need to use connecting steel plates, but between the angle steels 500 on both sides and between the flat steel plates 320 on both sides through the anchoring steel bars 600 pierced through the precast concrete columns. For fixed connection, the end of the anchoring steel bar is locked by the high-strength nut 700 after passing through the connecting angle steel or flat steel plate.

In this embodiment, the two ends of the prestressed steel bars are anchored to the distal ends of the precast concrete beams on both sides; the precast concrete columns and the precast concrete beams are reserved with channels for passing through the prestressed steel bars and the anchoring steel bars. Formed from PVC pipes on precast concrete columns and precast concrete beams.

The preferred embodiments listed above further describe the purpose, technical solutions and advantages of the present invention in detail. It should be understood that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. a kind of prestressing without bondn assembling type node with energy-consuming device, it is characterised in that: including connected vertically prefabricated mixed Solidifying earth pillar and precast concrete beam, are connected between precast concrete beam end and precast concrete column side wall by bellows damper It connects, bellows damper one end is fixedly connected on precast concrete column side wall, and the bellows damper other end is fixedly connected on pre- Beams of concrete end processed；Same root deformed bar, deformed bar are equipped on precast concrete beam and precast concrete column By being passed through among bellows damper.

2. the prestressing without bondn assembling type node according to claim 1 with energy-consuming device, it is characterised in that: the wave Line pipe damper one end is provided with the troughing plate being fixedly connected with precast concrete beam, and the troughing plate is buckled in concrete On the end of Tu Liang, the bellows damper other end is provided with the plane steel plate being fixedly connected with precast concrete column.

3. the prestressing without bondn assembling type node according to claim 2 with energy-consuming device, it is characterised in that: bellows It is provided with below damper and supports the angle steel of troughing plate and plane steel plate, the angle steel is fixedly connected on precast concrete Column side.

4. the prestressing without bondn assembling type node according to claim 3 with energy-consuming device, it is characterised in that: described pre- The anchor bar to fixed angle steel peace face steel plate is equipped on concrete column processed；The precast concrete beam end is equipped with To connect the anchor bar of troughing plate, the anchor bar both ends to connect troughing plate are pierced by the both side plate of troughing plate It is locked afterwards by high-strength nut.

5. the prestressing without bondn assembling type node according to claim 3 with energy-consuming device, it is characterised in that: described pre- Concrete column processed is vertical with the precast concrete beam of side to be connected, and precast concrete column is provided with away from precast concrete beam side Junction steel plate, by being threaded through in precast concrete column between plane steel plate and junction steel plate and between angle steel and junction steel plate Anchor bar be fixedly connected, anchor bar one end pass through junction steel plate after locked by high-strength nut, the anchor bar other end is worn It is locked after crossing angle steel or plane steel plate by high-strength nut.

6. the prestressing without bondn assembling type node according to claim 3 with energy-consuming device, it is characterised in that: described pre- Concrete column processed is vertical with the precast concrete beam of two sides to be connected, and is passed through between the angle steel of two sides and between the plane steel plate of two sides and is worn The anchor bar being located in precast concrete column is fixedly connected, after the end of anchor bar passes through angle cleat or plane steel plate It is locked by high-strength nut.

7. the prestressing without bondn assembling type node according to claim 1 with energy-consuming device, it is characterised in that: the wave Rubber is filled with inside line pipe damper.