CN201991099U - Externally applied shock-absorbing steel frame for shock resistance and reinforcement - Google Patents

Abstract

The utility model relates to an externally pasted shock-absorbing steel frame for anti-seismic reinforcement, which is mainly used for anti-seismic reinforcement of buildings and belongs to the field of energy dissipation and shock absorption of civil engineering structures. The shock-absorbing steel frame includes an upper steel frame and a lower steel frame arranged along the length direction of the beam, a left steel frame fixed on the left column, a right steel frame fixed on the right column, and two ends connected with the upper steel frame respectively. , lower steel frame, left steel frame and right steel frame fixedly connected metal yield type damper. Wherein, the two ends of the upper steel frame and the lower steel frame are fixedly connected with the left steel frame and the right steel frame respectively, the upper steel frame is connected with the upper beam, and the lower steel frame is connected with the lower beam. The upper steel frame, the lower steel frame, the left steel frame and the right steel frame form a rectangular frame, which can realize efficient and rapid reinforcement of the concrete frame structure, without wet work, and only partial construction. Most of the components and accessories are prefabricated by the factory. On-site assembly can realize standardized production.

Description

Externally attached shock-absorbing steel frame for seismic reinforcement

technical field

The utility model relates to an externally pasted shock-absorbing steel frame for anti-seismic reinforcement, which is mainly used for anti-seismic reinforcement of buildings and belongs to the field of energy dissipation and shock absorption of civil engineering structures.

Background technique

At present, the most commonly used reinforcement method in the design of concrete structures is the enlarged section reinforcement method. However, the reinforcement method of enlarging the section has its disadvantages. For example, the wet operation time of on-site construction is long, which has a certain impact on production and life, and affects its use function.

Utility model content

The purpose of the utility model is to overcome the above-mentioned defects of the existing strengthening method of enlarging the cross section, and propose an externally pasted shock-absorbing steel frame for anti-seismic reinforcement. The frame adds a certain number of externally attached steel frames with metal yield dampers to the concrete frame structure system, which solves many problems encountered in the seismic reinforcement of concrete frame structures, and at the same time can realize efficient and rapid reinforcement of concrete frames The structure does not require wet work, only partial construction, most of the components and accessories are prefabricated by the factory and assembled on site, which can realize standardized production.

In order to achieve the above object, the utility model adopts the following technical solutions. The shock-absorbing steel frame can be arranged on several floors of some spans of the building, and the shock-absorbing steel frame includes an upper steel frame and a lower steel frame arranged along the length direction of the beam, and a left steel frame fixed on the left column, The right steel frame fixed on the right column, and the metal yield type damper fixedly connected with the upper steel frame, the lower steel frame, the left steel frame and the right steel frame at both ends respectively. Wherein, the two ends of the upper steel frame and the lower steel frame are fixedly connected with the left steel frame and the right steel frame respectively, the upper steel frame is connected with the upper beam, and the lower steel frame is connected with the lower beam. The upper steel frame, the lower steel frame, the left steel frame and the right steel frame form a rectangular frame. And the upper steel frame of this layer is used as the lower steel frame of the upper layer, and the lower steel frame of this layer is used as the upper steel frame of the lower layer.

In general, there are two forms of beams and columns, one is that the skins of beams and columns are not flush, and the other is that the skins of beams and columns are flush. Therefore, there are also two structures in the connection form of the upper steel frame and the lower steel frame with the beam. For the time being, the uneven skin of the beam and the column is called the first connection form, and the flush skin of the beam and the column is called the second connection form.

For the first connection form, the upper steel frame and the upper beam are connected through the second type steel, the third type steel, the bottom cover and the cover plate. The specific connection relationship is: the cross-sectional shape of the bottom cover is the same as that of the upper beam, Bottom covers are respectively arranged on the left and right sides of the upper beam close to the end, the bottom cover covers the lower surface of the upper beam, the cover plate is arranged on the upper surface of the floor slab and corresponds to the position of the bottom cover, and the bolts are arranged in order from top to bottom. Fix the three after passing through the cover plate, floor plate and bottom cover. The third type steel and the second type steel are arranged vertically, the third type steel is welded on the side of the bottom cover, the second type steel is welded on the side of the upper steel frame, the third type steel and the second type steel are inscribed, and the two can be vertically Sliding relative to each other in the vertical direction, a long oval through hole is opened in the vertical direction on the second steel, and a round hole is opened on the third steel in the range corresponding to the position of the long oval through hole on the second steel, and the bolt Fix the two through the oblong through hole on the second steel and the round hole on the third steel, so that the upper steel frame and the upper beam can move relative to each other within a certain range along the vertical direction. Movement in the horizontal direction is restricted. The connection form of the lower steel frame and the lower beam is the same as that of the upper steel frame and the upper beam.

For the second connection form, the upper steel frame and the upper beam are connected through the bottom cover and the cover plate. The specific connection form is: the cross-sectional shape of the bottom cover is the same as that of the upper beam, the bottom cover is arranged on the left and right sides of the upper beam near the end, the bottom cover covers the lower surface of the upper beam, and the cover plate is arranged on the floor of the floor The upper surface of the upper surface corresponds to the position of the bottom cover, and the bolts pass through the cover plate, floor slab and bottom cover sequentially from top to bottom to fix the three. There is an oblong through hole in the vertical direction on the upper steel frame, and a round hole is opened in the range corresponding to the position of the oblong through hole on the side of the bottom cover and the upper steel frame, and the bolt passes through the upper steel frame The oblong through hole on the top and the round hole on the bottom cover are fixed, so that the upper steel frame and the upper beam can move relatively within a certain range along the vertical direction, while the movement in the horizontal direction restricted. The connection form of the lower steel frame and the lower beam is the same as that of the upper steel frame and the upper beam.

The left steel frame is hot-rolled steel, such as angle steel, channel steel, T-shaped steel or H-shaped steel.

The connection form between the left steel frame and the left column is: set an oblong-shaped through hole on the left steel frame, drill a circular hole on the left column in the range corresponding to the position of the oblong-shaped through hole on the left steel frame, When installing, align the round hole on the left column with the oblong through hole on the left steel frame, and fix them with bolts, so that the left steel frame can move in a small range along the direction of the storey height. There is no movement in the direction of the span.

The right steel frame is hot-rolled steel, which is one of angle steel, channel steel, T-shaped steel or H-shaped steel. The connection form between the right steel frame and the right column is the same as the connection form between the left steel frame and the left column.

The connection mode between the upper steel frame and the left steel frame and the right steel frame is welding, and the connection mode between the lower steel frame and the left steel frame and the right steel frame is welding.

The metal yield damper is fixedly connected with the upper steel frame, the lower steel frame, the left steel frame and the right steel frame respectively.

The metal yield damper is an anti-buckling support.

Two metal yield dampers are arranged on each floor of the building, and the two metal yield dampers on each floor are arranged in an (inverted) V shape. The four metal yield dampers on every two adjacent floors are arranged in an X shape or a single (inverted) V shape.

A metal yield damper arranged along the diagonal direction of the rectangular frame is arranged on each floor of the building. Two metal yield dampers on every two adjacent floors are arranged in a (cross) monoclinic arrangement.

The upper steel frame, the lower steel frame, the left steel frame and the right steel frame are hot-rolled section steel, which are angle steel, channel steel, T-shaped steel or H-shaped steel.

Compared with the existing anti-seismic and shock-absorbing reinforcement technology, the utility model has the following advantages:

1. The upper steel frame, lower steel frame, left steel frame, right steel frame and metal yield damper can all be manufactured in the factory. The processing technology is simple, the degree of standardization is high, and the construction speed is fast. It can be used in the state of the building without stopping under construction for reinforcement.

2. The force transmission is clear, and the cooperation between the externally attached shock-absorbing steel frames of each layer, and between the shock-absorbing steel frames and the main structure is reliable, which can effectively reduce the load of the existing main structure caused by earthquakes. It can significantly increase the equivalent viscous damping ratio, reduce the seismic action, and reduce the seismic demand for the existing main structural components.

3. The utility model has the advantages of simple structure, stable performance and wide application range, and can be applied to the anti-seismic and shock-absorbing reinforcement of houses, schools, hospitals, and various civil and industrial buildings.

Description of drawings

Fig. 1 is the utility model structure and connection schematic diagram

Fig. 2 (a) is the A-A sectional view of the first connection form of the utility model beam-column

Fig. 2 (b) is the A-A sectional view of the second connection form of the beam column of the present invention

Fig. 3 (a) is the B-B sectional view of the first connection form of the utility model beam-column

Fig. 3 (b) is the B-B sectional view of the utility model beam-column second connection form

Fig. 4 (a) is the C-C sectional view of the first connection form of the utility model beam-column

Fig. 4 (b) is the C-C sectional view of the second connection form of the beam column of the present invention

Fig. 5 (a) is the D-D sectional view of the first connection form of the utility model beam-column

Fig. 5 (b) is the D-D sectional view of the second connection form of the utility model beam-column

Fig. 6(a) Cross-V arrangement of metal yield dampers (buckling-resistant braces)

Fig. 6(b) Metal yield damper (buckling-resistant brace) cross monoclinic arrangement

Figure 6(c) Metal yield damper (anti-buckling support) (inverted) V-shaped arrangement

Fig. 6(d) Monoclinic arrangement of metal yield dampers (buckling-resistant braces)

In the figure: 1. Upper steel frame, 2. Lower steel frame, 3. Left steel frame, 4. Right steel frame, 5. Metal yield type damper (buckling-resistant support), 6. Upper beam, 7. Lower beam, 8, left column, 9, right column, 11, second section steel, 12, third section steel, 13, bottom cover, 14, cover plate.

Detailed ways

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

As shown in Figure 1, the shock-absorbing steel frame in this embodiment can be arranged on several floors of some spans of the building, and the shock-absorbing steel frame includes an upper steel frame 1 and a lower steel frame 2 arranged along the length direction of the beam , and the left steel frame 3 fixed on the left column 8, the right steel frame 4 fixed on the right column 9, and the two ends are respectively connected with the upper steel frame 1, the lower steel frame 2, the left steel frame 3 and the right steel frame 4 Fixedly connected metal yield type damper 5. Wherein, the two ends of the upper steel frame 1 and the lower steel frame 2 are fixedly connected with the left steel frame 3 and the right steel frame 4 respectively, the upper steel frame 1 is connected with the upper beam, and the lower steel frame 2 is connected with the lower beam. The upper steel frame 1, the lower steel frame 2, the left steel frame 3 and the right steel frame 4 form a rectangular frame. And the upper steel frame of this layer is used as the lower steel frame of the upper layer, and the lower steel frame of this layer is used as the upper steel frame of the lower layer.

In general, there are two forms of beams and columns, one is that the skins of beams and columns are not flush, and the other is that the skins of beams and columns are flush. Therefore, there are also two structures for the connection form of the upper steel frame 1 and the lower steel frame 2 with the beam. For the time being, the uneven skin of the beam and the column is called the first connection form, and the flush skin of the beam and the column is called the second connection form.

For the first connection form, as shown in Figure 2(a), Figure 3(a), Figure 4(a) and Figure 5(a), the upper steel frame 1 and the upper beam pass through the second steel 11, the third steel 12. The bottom cover 13 is connected to the cover plate 14. The specific connection relationship is: the cross-sectional shape of the bottom cover 13 is the same as that of the upper beam 6, and the bottom cover 13 is respectively arranged on the left and right sides of the upper beam 6 close to the end. The cover 13 covers the lower surface of the upper beam 6, the cover plate 14 is arranged on the upper surface of the floor and corresponds to the position of the bottom cover 13, and the bolts pass through the cover plate 14, the floor and the bottom cover 13 sequentially from top to bottom Fix all three. The third shaped steel 12 and the second shaped steel 11 are arranged vertically, the third shaped steel 12 is welded to the side of the bottom cover 13, the second shaped steel 11 is welded to the side of the upper steel frame 1, the third shaped steel 12 and the second shaped steel 11 Then, the two can slide relative to each other along the vertical direction. On the second steel 11, there is an oblong through hole in the vertical direction, and on the third steel 12 and the oblong through hole on the second steel 11 There is a round hole in the range corresponding to the position, and the bolts pass through the oblong through hole on the second steel 11 and the round hole on the third steel to fix the two, so that there is a gap between the upper steel frame 1 and the upper beam. Relative movement is possible within a certain range along the vertical direction, while movement in the horizontal direction is restricted. The connection form of the lower steel frame and the lower beam is the same as that of the upper steel frame and the upper beam.

For the second connection form, as shown in Fig. 2(b), Fig. 3(b), Fig. 4(b) and Fig. 5(b), the upper steel frame 1 and the upper beam pass through the bottom cover 13 and the cover plate 14 phase connections. The specific connection form is: the cross-sectional shape of the bottom cover 13 is the same as that of the upper beam 6, the bottom cover 13 is respectively arranged on the left and right sides of the upper beam 6 close to the end, the bottom cover 13 covers the lower surface of the upper beam 6, and the bottom cover 13 covers the lower surface of the upper beam 6. Plate 14 is arranged on the upper surface of the floor slab and corresponds to the position of bottom cover 13. Bolts pass through cover plate 14, floor slab and bottom cover 13 successively from top to bottom to fix the three. On the upper steel frame 1, there is an oblong through hole in the vertical direction, and a round hole is opened on the side of the bottom cover in the range corresponding to the position of the oblong through hole on the upper steel frame 1, and the bolt passes through the upper After the oblong through hole on the steel frame 1 and the round hole on the bottom cover 13, the two are fixed, so that the upper steel frame 1 and the upper beam can move relatively within a certain range along the vertical direction, and Movement in the horizontal direction is restricted. The connection form of the lower steel frame and the lower beam is the same as that of the upper steel frame and the upper beam.

The left steel frame 3 can choose one of angle steel, channel steel, T-shaped steel and H-shaped steel. The connection form between the left steel frame 3 and the left column 8 is shown in Figure 1, and the oblong bolt holes are set on the left steel frame, corresponding to the positions of the oblong bolt holes on the left steel frame on the left column 8 When installing, align the round hole on the left column 8 with the oblong through hole on the left steel frame 3, and fix them with bolts, so that the left steel frame 3 is in the direction along the storey height There is a small range of movement, but no movement along the span.

As shown in Figure 1, the right steel frame 4 can also be selected from one of angle steel, channel steel, T-shaped steel, and H-shaped steel. The connection form between the right steel frame 4 and the right column 9 is the same as the connection form between the left steel frame and the left column.

Metal yield dampers 5 can be optionally braced against buckling.

Two metal yield dampers 5 are arranged on each floor of the building, and the two metal yield dampers on each floor are arranged in an (inverted) V shape. The four metal yield dampers 5 on every two adjacent layers are arranged in an X shape (as shown in Figure 6(a)) or in a single (inverted) V shape (as shown in Figure 6(c)).

A metal yield damper 5 arranged along the diagonal direction of the rectangular frame is arranged on each floor of the building. The two metal yield dampers 5 in every two adjacent layers are arranged in a (cross) monoclinic arrangement, as shown in Fig. 6(b) and Fig. 6(d).

In this embodiment, the upper steel frame 1 , the lower steel frame 2 , the left steel frame 3 , and the right steel frame 4 can all move within a certain range in the vertical direction, while the movement of the horizontal phase is restricted.

In this embodiment, the upper steel frame 1, the lower steel frame 2, the left steel frame 3, the right steel frame 4 and the metal yield type damper 5 can all be standardized in the factory.

In this embodiment, the upper steel frame of this layer is used as the lower steel frame of the upper layer, and the lower steel frame of this layer is used as the upper steel frame of the lower layer.

Claims (7)

1. seismic hardening external labeling type shock-absorption steel frame is characterized in that: this shock-absorption steel frame comprises the last steel frame (1) arranged along the length direction of beam and following steel frame (2) and is fixed on left steel frame (3) on the left post (8), is fixed on the metal yield type damper of fixedlying connected with right steel frame (4) with last steel frame (1), time steel frame (2), left steel frame (3) respectively in right steel frame (4) and two ends on the right post (9) (5); Wherein, fixedly connected with right steel frame (4) with left steel frame (3) respectively in the two ends of last steel frame (1) and following steel frame (2), and last steel frame (1) is connected with upper beam, and following steel frame (2) is connected with underbeam; Last steel frame (1), down steel frame (2), left steel frame (3) and right steel frame (4) are formed a rectangular frame, and the last steel frame of this layer is used as the following steel frame on upper strata, and the following steel frame of this layer is used as the last steel frame of lower floor;

There are two kinds of forms in Liang Yuzhu, a kind of form beam is not concordant with the crust of post, another kind of form beam is concordant with the crust of post, the type of attachment of above steel frame (1) and following steel frame (2) and beam also have two kinds of structures, not concordant first type of attachment that calls of the crust of Liang Yuzhu, concordant second type of attachment that calls of the crust of Liang Yuzhu;

For first kind of type of attachment, pass through second shaped steel (11) between last steel frame (1) and the upper beam, the 3rd shaped steel (12), bottom (13) is connected with cover plate (14), concrete annexation is: the cross sectional shape of bottom (13) is identical with the cross sectional shape of upper beam (6), bottom (13) is arranged in the left and right sides of upper beam (6) near the end, bottom (13) covers the soffit of upper beam (6), cover plate (14) is arranged in the upper surface of this floor plate and corresponding with the position of bottom (13), and bolt passes cover plate (14) from top to bottom successively, floor and bottom after (13) are fixed the three; The 3rd shaped steel (12) and second shaped steel (11) are vertically arranged, the 3rd shaped steel (12) is welded in the side of bottom (13), second shaped steel (11) is welded on the side of steel frame (1), connect in the 3rd shaped steel (12) and second shaped steel (11), the two can slide relatively along vertical direction, on second shaped steel (11), vertically have oblong through hole, in the scope that the 3rd shaped steel (12) is gone up and oblong lead to the hole site on second shaped steel (11) is corresponding, have a circular hole, bolt after passing oblong through hole on second shaped steel (11) and the circular hole on the 3rd shaped steel is fixed the two, make like this to go up between steel frame (1) and the upper beam in the certain limit of vertical direction, can relatively move that the motion of horizontal direction then is restricted; The type of attachment of following steel frame and underbeam is identical with the type of attachment of last steel frame and upper beam;

For second kind of type of attachment, last steel frame (1) with put the beams in place between be connected with cover plate (14) by bottom (13); Concrete type of attachment is: the cross sectional shape of bottom (13) is identical with the cross sectional shape of upper beam (6), bottom (13) is arranged in the left and right sides of upper beam (6) near the end, bottom (13) covers the soffit of upper beam (6), cover plate (14) is arranged in the upper surface of this floor plate and corresponding with the position of bottom (13), and bolt after passing cover plate (14), floor and bottom (13) is from top to bottom successively fixed the three; On last steel frame (1), vertically have the oblong through hole, in the scope corresponding of the side of bottom, have a circular hole with oblong lead to the hole site on the last steel frame (1), bolt after passing oblong through hole on the steel frame (1) and the circular hole on the bottom (13) is fixed the two, make like this to go up between steel frame (1) and the upper beam in the certain limit of vertical direction, can relatively move that the motion of horizontal direction then is restricted; The type of attachment of following steel frame and underbeam is identical with the type of attachment of last steel frame and upper beam;

Type of attachment between left side steel frame (3) and the left post (8) is: long ellipse bolt hole is set on left steel frame, in going up the scope corresponding with the oblong bolt hole position on the left steel frame, bores on left post (8) circular hole, during installation, with the oblong bolt hole on circular hole on the left post (8) and the left steel frame (3) to last, use bolt, thereby make left steel frame (3) moving among a small circle can be arranged, on the direction of span, then cannot move in direction along floor height;

Right steel frame (4) is identical with the type of attachment between left steel frame and the left post with type of attachment between the right post (9).

2. a kind of seismic hardening external labeling type shock-absorption steel frame according to claim 1, it is characterized in that: go up steel frame and be welding with connected mode between left steel frame and the right steel frame, following steel frame with and left steel frame and right steel frame between connected mode be to weld.

3. a kind of seismic hardening external labeling type shock-absorption steel frame according to claim 1 is characterized in that: described metal yield type damper supports for anti-flexing.

4. according to claim 1 or claim 2 or the described a kind of seismic hardening external labeling type shock-absorption steel frame of claim 3, it is characterized in that: all arrange two metal yield type dampers (5) every layer of building, two metal yield type dampers of every layer are in the shape of the letter V or inverted v-shaped is arranged.

5. according to claim 1 or claim 2 or the described a kind of seismic hardening external labeling type shock-absorption steel frame of claim 3, it is characterized in that: every layer at building all is provided with a metal yield type damper of arranging along the rectangular frame diagonal.

6. a kind of seismic hardening external labeling type shock-absorption steel frame according to claim 1 is characterized in that: described steel frame, following steel frame, left steel frame and the right steel frame gone up is hot-rolled steel section.

7. a kind of seismic hardening external labeling type shock-absorption steel frame according to claim 6 is characterized in that: described hot-rolled steel section is angle steel or channel-section steel or T-steel or H shaped steel.

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