CN103243836A - Steel plate-steel support combined lateral force resisting member and beam column structure applying same - Google Patents

Abstract

The invention discloses a steel plate-steel support composite anti-lateral force component and a beam-column structure using the component, belonging to the technical field of lateral force anti-components in structural engineering. A steel plate-steel support combination anti-lateral force member of the present invention includes a steel plate and a steel support integrated with the steel plate. The shape of the steel plate is "convex". Bolt holes are equidistant on the support, and bolt holes are also opened on the corresponding positions of the steel plate. The two parts of the steel support are respectively connected with the steel plate through high-strength bolts. The steel support is arranged in a "V" shape. The steel support is used to provide anti-side The axial tensile and compressive capacity of a part of the force member. The main purpose of the present invention is to constrain the out-of-plane deformation of the steel plate through the steel support so as to avoid the "pinching" of the hysteretic curve; at the same time, the tension field of the steel plate is used to restrain the extreme point instability that often occurs in the structural plane of the compressed steel support, Thus, a lateral force-resistant member with excellent seismic performance is obtained.

Description

Steel plate-steel bracing composite lateral force-resisting member and beam-column structure using this member

technical field

The invention relates to a lateral force-resistant member and a beam-column structure using the same, more specifically, to a steel plate-steel support composite lateral-force-resistant member and a beam-column structure using the same.

Background technique

Earthquake is the biggest natural enemy of buildings and a great threat to human existence. The dual seismic system in the steel structure often uses steel plate shear walls or steel supports as the first line of seismic defense to resist the horizontal action of small and moderate earthquakes. Under the action of a large earthquake, on the one hand, the steel plate shear wall or steel support consumes seismic energy through its own buckling and yielding, and acts as a "fuse" to protect the safety of the steel frame bearing gravity load; on the other hand, due to its own stiffness The degradation reduces the earthquake response, so that the steel frame as the second anti-seismic defense line can resist the reduced earthquake action, so as to ensure that the main structure will not collapse under the action of a large earthquake, and protect the safety of life and property. It is suitable for high-rise buildings in earthquake areas. structure type.

However, the commonly used thin steel plate shear wall, because the out-of-plane stiffness of the steel plate is very small, the steel plate will undergo shear buckling under the action of a small horizontal load, and the diagonal tension field formed after the steel plate buckling needs to be used to resist the horizontal action (The tension field is anchored through the connection to the frame). Since the thin steel plate cannot be compressed, the bearing capacity of the steel plate is significantly reduced in the transformation stage of tensile stress-compressive stress, and the phenomenon of "pinching" of the hysteretic curve under the action of reciprocating load appears, which makes the plastic hysteretic energy dissipation capacity of the steel better. If it is not fully utilized, it will affect the further improvement of the seismic performance. And under the action of horizontal reciprocating load, the buckling direction and the diagonal tension field of the steel plate are constantly changing alternately, and there will be a loud, drum-like noise, which has a non-negligible negative impact on the normal use of the structure.

The commonly used central support anti-lateral force system, because the compression support will lose most of its bearing capacity due to instability when it is subjected to a large load, so that the ductility of the structure is greatly reduced, the hysteresis curve under the reciprocating load is not full enough, and the structure The deformation capacity and energy dissipation capacity are weak, and when the supporting steel frame structure has a large horizontal load, when the supporting diagonal bars intersect the frame beams (such as V-shaped and herringbone supports), the compressive support will appear due to instability. The bearing capacity is greatly reduced and the vertical component of the tensile support cannot be balanced. At this time, the "Code for Seismic Design of Building Structures" GB50017-2010 stipulates that the frame beam connected to the support must be designed to be strong enough, which makes the beam section significantly increased At the same time, in terms of design, according to the principle of "strong column and weak beam" stipulated in GB50017-2010, the column connected to the frame beam must be strengthened, so that not only the steel consumption of the structure will be greatly increased, but also the structural rigidity will be significantly increased, thus Induce a larger earthquake response.

After patent retrieval, the Chinese patent application number is: 200810240517.2, and the publication date is: June 17, 2009. The name of the invention is: steel truss-steel plate composite shear wall and its manufacturing method. The application discloses a shear wall, in particular to a steel truss-steel plate composite shear wall and its manufacturing method, including a frame beam, a frame column consolidated with the frame beam, and a steel plate arranged between the frame beam and the frame column , the frame beam includes a steel beam and concrete poured outside the steel beam to form a steel-concrete composite beam, and the frame column is a steel concrete column composed of steel and concrete poured outside the steel beam, and the steel and steel plates in the steel concrete column and The profiled steel beams in the frame beams are fixed, and the profiled steel oblique supports are consolidated obliquely on the steel plate plane, and the profiled steel oblique supports can be arranged in a herringbone, X or splayed shape. Steel beams, steel concrete columns, steel diagonal supports and steel plates are combined to form a steel truss-steel plate composite structure. The shear wall of this application has higher initial rigidity and higher bearing capacity than the existing shear walls, but its disadvantage is that the support of this application is set on one side of the steel plate, which is asymmetrical to the longitudinal axis of the steel beam. Therefore, when the support is stressed, the steel beam will be subjected to obvious torsion due to the eccentricity of the support to the longitudinal axis of the steel beam; Serious torsional deformation or instability occurs due to the torque generated by eccentricity.

Another example is the Chinese patent application number: 200910090731.9, the publication date is: March 17, 2010, and the name of the invention is: a buckling-inhibited shear wall that can slide with stiffened steel and embedded steel plates. This application discloses a buckling-inhibited shear wall in which stiffened steel and embedded steel plates can slide. The shear wall is composed of embedded steel plates, steel stiffeners, fishplates and edge members; the embedded steel plates are made of high ductility steel. Rolled thin steel plates; edge members are composed of edge columns and edge beams; section steel stiffeners are I-shaped, box-shaped, C-shaped, L-shaped, cap-shaped or other cross-sectional forms; embedded steel plates are opened at the four corners A quarter arc notch; the embedded steel plate and the edge member are connected by a fishplate; the embedded steel plate and the steel stiffener are connected by high-strength bolts penetrating both. The buckling-inhibited shear wall in which the stiffened section steel and the embedded steel plate can slide provided by the application can be used as a new type of lateral force-resisting member of a high-rise building steel structure or other structures, but its disadvantage is that the section steel in the application is only It plays a structural role and is used to restrain the buckling of the embedded steel plate. The steel itself is not a lateral force-resistant member, and its mechanical properties cannot be fully utilized.

Contents of the invention

1. The technical problem to be solved by the invention

The purpose of the present invention is to overcome the shear buckling of thin steel plate shear walls in the prior art, and the commonly used central support anti-lateral force system is easy to lose most of the bearing capacity due to instability, greatly reducing ductility, structural deformation capacity, and consumption. In order to solve the problem of weak performance, a steel plate-steel support composite anti-lateral force component and a beam-column structure using the component are provided. The technical scheme provided by the invention is used to constrain the out-of-plane deformation of the steel plate through the steel support so as to avoid the hysteresis curve "Pinch together"; at the same time, the tension field of the steel plate is used to constrain the extreme point instability that often occurs in the structural plane of the compressed steel support, so as to obtain a composite lateral force-resistant member with excellent seismic performance, and the seismic energy dissipation capacity is greatly improved. .

2. Technical solution

In order to achieve the above object, the technical scheme provided by the invention is:

A steel plate-steel support combination anti-lateral force member of the present invention includes a steel plate and a steel support integrated with the steel plate. The shape of the steel plate is a rectangle with two corners on the same side cut off, and the shape of the cut part is The steel support is square, and the steel support includes two symmetrical parts, which are respectively placed on both sides of the steel plate. The cross-sectional shape of the steel support composed of the two parts is rectangular or circular, and the equidistant openings on the steel support are 10 to 20 bolt holes, the distance between the bolt holes and the end of the steel support is 150 to 200 mm, and 10 to 20 bolt holes are also opened on the corresponding positions of the steel plates, and the two parts of the steel support They are respectively connected to the steel plate through high-strength bolts and nuts, the joints between the high-strength bolts and the nuts are provided with high-strength gaskets, and the contact points between the steel supports and the steel plates are connected by welding, and the steel supports are arranged in a "V" shape. The axis of the steel support coincides with the diagonal of the excised square, one end face of the steel support is flush with one side of the steel plate, the other end is located in the area of the excised square, and this end is perpendicular to Open slots are arranged in the direction of the steel plate, and the steel support is used to provide a part of the axial tensile and compressive resistance of the lateral force-resistant member.

Furthermore, the major diameter of the high-strength bolts and nuts is 12mm or 14mm, and the distance between the high-strength bolts is 200-300mm.

Furthermore, the two parts of the steel support are channel-shaped section steel made by cold working or semi-circular section steel obtained by splitting a circular tube.

Furthermore, the materials of the steel plate and the steel support are both Q235 or Q345.

A beam-column structure using the above-mentioned lateral force-resistant member of the present invention includes the above-mentioned steel plate-steel support composite lateral-force-resistant member, and also includes fishplates, gusset plates, gusset plate stiffeners, beams and columns, and the fishtail The thickness of the plate is 2 to 3 times the thickness of the steel plate. One side of the fishplate is welded on the flange of the beam and column, and the other side is welded to the steel plate of the lateral force resistance member. The size of the gusset plate is the same as that of the steel plate The size of the cut square is equal, the thickness of the gusset plate and the stiffener of the gusset plate are the same, the two right-angled sides of the gusset plate are welded on the flange at the intersection of the beam and the column, and the gusset plate stiffener The ribs are vertically welded on both sides of the gusset plate to form a "ten" cross-section. The gusset plate and the gusset plate stiffener are used to connect with one end of the steel support of the lateral force-resistant member, and the other end of the steel support is connected to the beam on the beam. The flanges are welded together.

Furthermore, the welding is a fillet weld.

Furthermore, a corner is cut off from the gusset plate and the gusset plate stiffener, and the size of the cut corner is 20-40mm.

3. Beneficial effect

Compared with the existing known technology, the technical solution provided by the invention has the following remarkable effects:

(1) A steel plate-steel support combination anti-lateral force member of the present invention, the steel support includes two symmetrical parts, which are respectively placed on both sides of the steel plate, and the cross-sectional shape of the steel support composed of the two parts is rectangular or circular , the two parts of the steel support are respectively connected with the steel plate through high-strength bolts and nuts. On the one hand, the out-of-plane stiffness of the steel support is used to constrain the out-of-plane displacement of the steel plate, so that the plastic hysteretic energy dissipation capacity of the thin steel plate is significantly improved, and the tension field is reduced. The shock effect generated by the conversion eliminates or significantly reduces the load-changing noise; on the other hand, the tension field of the steel plate prevents the extreme point instability of the steel support in the structural plane, and the bearing capacity and consumption of the steel support under compression The energy capacity is fully utilized, coupled with the improved energy dissipation capacity of the steel plate, the lateral force resistant member has excellent seismic performance;

(2) A steel plate-steel support composite anti-lateral force member of the present invention, the shape of the steel plate is a rectangle with two corners on the same side cut off, the shape of the cut part is a square, and the axis of the steel support is the same as the cut square. The diagonals coincide, and the vertical component of the axial force of the compression steel support can be offset by the vertical component of the axial force of the tension steel support. Therefore, the cross-section of the connected beams does not need to be enlarged due to the vertical unbalanced force, and the frame beams and columns do not need to Enlarging, effectively reducing the amount of steel used;

(3) A steel plate-steel support composite anti-lateral force member of the present invention, on the one hand, the steel support can be used as a structural member of the steel plate shear wall to prevent out-of-plane instability; on the other hand, the steel support itself is the anti-lateral force Part of the system, its mechanical properties can be fully utilized;

(4) A steel plate-steel support composite anti-lateral force member of the present invention, the steel support is fastened by two parts placed on both sides of the steel plate and fastened with high-strength bolts. For the longitudinal axis of the steel beam and the steel plate The plane is completely symmetrical, so it will not have any torsion effect on the steel beam, and avoid serious torsional deformation or instability of the frame beam due to the torque effect of the eccentricity of the steel support on the steel beam;

(5) A beam-column structure using a steel plate-steel support composite lateral force-resistant component of the present invention, one side of the fishplate is welded to the flange of the beam and column, and the other side is welded to the steel plate of the lateral force-resistant component. The steel plate-steel support composite lateral force-resistant member and the beam-column structure are connected into an organic whole, so that the beam-column structure can absorb and dissipate a large amount of seismic energy under earthquake action, and prevent buildings using the beam-column structure from collapsing when encountering strong earthquakes. collapse;

(6) Since the two right-angled sides of the gusset plate are welded on the flange at the intersection of the beam and the column, the stiffeners of the gusset plate are welded vertically on both sides of the gusset plate to form a “ten”-shaped section. The gusset plate and the gusset plate stiffener It is used to connect one end of the steel support of the lateral force-resistant member, and the other end of the steel support is welded to the flange on the beam, which not only makes the connection between the lateral force-resistant member and the beam-column structure more reliable, but also effectively uses the steel support as a Part of the lateral force system, it works together with the shear wall to provide better hysteretic energy dissipation capacity and seismic performance.

Description of drawings

Fig. 1 is the schematic diagram of the beam-column structure of the application steel plate-steel support combination anti-lateral force member of the present invention;

Fig. 2 is a structural schematic diagram of a steel plate-steel support combination anti-lateral force member in the present invention;

Fig. 3 is the schematic diagram of steel support and beam-column connection structure in the present invention;

Fig. 4 is a schematic diagram of a steel support structure in the present invention;

Figure 5(a) is a cross-sectional view of the rectangular steel support in the A-A direction in Figure 4;

Figure 5(b) is a cross-sectional view of the circular steel support in the A-A direction in Figure 4;

Figure 6(a) is a cross-sectional view of the rectangular steel support in the B-B direction in Figure 4;

Figure 6(b) is a cross-sectional view of the circular steel support in the B-B direction in Figure 4;

Fig. 7 is the sectional view of C-C direction in Fig. 4;

Figure 8 is a characteristic diagram of hysteresis curves of mechanical superposition of steel frame, steel plate wall and steel support under reciprocating load;

Fig. 9 is a characteristic diagram of the hysteresis curve of the beam-column structure using the steel plate-steel support composite anti-lateral force member of the present invention.

Explanation of the labels in the schematic diagram:

1. Steel plate; 2. Steel support; 3. Fish plate; 4. Gusset plate; 5. Beam; 6. Column; 7. Gusset plate stiffener; 8. Bolt hole.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

With reference to Fig. 2, Fig. 4 and Fig. 7, a steel plate-steel support composite anti-lateral force member of the present invention includes a steel plate 1 and a steel support 2 integrated with the steel plate 1. The shape of the steel plate 1 is cut off on the same side The shape of the cut part is a square (as shown in Figure 2). The steel support 2 includes two symmetrical parts, which are respectively placed on both sides of the steel plate 1. The cross-section of the steel support 2 composed of the two parts The shape is rectangular or circular (as shown in Figure 5(a) and Figure 5(b)), and the two parts of the steel support 2 are channel-shaped cross-section steel made by cold working or a semicircle obtained by splitting a round tube section steel. 10-20 bolt holes 8 are equidistantly opened on the steel support 2 (as shown in Figure 4). The distance between the bolt holes 8 and the end of the steel support 2 is 150-200mm, and 10 ～20 bolt holes 8, the two parts of the steel support 2 are respectively connected with the steel plate 1 through high-strength bolts and nuts, high-strength gaskets are arranged at the joints between the high-strength bolts and nuts, the major diameter of the high-strength bolts and nuts is 12mm or 14mm, high-strength The distance between the bolts is 200-300 mm, and the contact between the steel support 2 and the steel plate 1 is connected by welding. As shown in Figure 2, the steel support 2 is arranged in a "V" shape, the axis of the steel support 2 coincides with the diagonal line of the above-mentioned excised square, one end face of the steel support 2 is flush with one side of the steel plate 1, and the other end It is located in the cut square area, and the end is provided with an open groove in the direction perpendicular to the steel plate 1 (as shown in Figure 4). One end of the groove-shaped or semicircular cross-section bar needs to be cut off to adjust the gusset plate 4 Thickness (as shown in Figure 7), the material of steel plate 1 and steel support 2 is Q235 or Q345, and steel support 2 can be used to provide part of the axial tensile and compressive capacity of the lateral force-resistant member.

1 and 3, a beam-column structure using a steel plate-steel support composite anti-lateral force member according to the present invention includes the above-mentioned steel plate-steel support composite anti-lateral force member, and also includes a fishplate 3 and a gusset plate 4 , gusset plate stiffener 7, beam 5 and column 6, the thickness of the fishplate 3 is 2 to 3 times the thickness of the steel plate 1, one side of the fishplate 3 is welded on the flange of the beam 5 and column 6, the other The side is welded to the steel plate 1 of the lateral force-resisting member, the size of the gusset plate 4 is equal to the size of the square cut off from the steel plate 1, the thickness of the gusset plate 4 is the same as that of the gusset plate stiffener 7, and the gusset plate 4 and the gusset plate stiffener 7 are One corner is cut off, the size of the cut corner is 20-40mm, the two right-angled sides of the gusset plate 4 are welded to the flange at the intersection of the beam 5 and the column 6, and the gusset plate stiffener 7 is welded vertically to both sides of the gusset plate 4 , forming a "ten"-shaped section (as shown in Figure 6(a) and Figure 6(b)), the gusset plate 4 and the gusset plate stiffener 7 are used to connect with one end of the steel support 2 of the lateral force-resistant member, and the steel support The other end of 2 is welded to the flange on the beam 5, and the above-mentioned welding is a fillet weld.

The present invention will be further described below in conjunction with embodiment.

Example 1

A steel plate-steel support combination anti-lateral force member in this embodiment includes a steel plate 1 and a steel support 2 integrated with the steel plate 1. The shape of the steel plate 1 is a rectangle with two corners on the same side removed, forming a " The shape of the cut part is square. The steel support 2 includes two symmetrical parts, which are respectively placed on both sides of the steel plate 1. The cross-sectional shape of the steel support 2 composed of the two parts is rectangular. The two parts of the steel support 2 Some are channel-section steel made by cold working. Ten bolt holes 8 are equidistantly opened on the steel support 2, and the distance between the bolt holes 8 and the end of the steel support 2 is 150mm, and ten bolt holes 8 are also opened on the corresponding position of the steel plate 1, and the two parts of the steel support 2 They are respectively connected to the steel plate 1 through high-strength bolts and nuts, and high-strength gaskets are arranged at the joints between high-strength bolts and nuts. The axis and the steel plate 1 plane are completely symmetrical, so there will be no torsion effect on the beam 5 and column 6, and the serious torsional deformation or instability of the beam 5 and column 6 due to the torque generated by the steel support 2 will be avoided. The contact between the steel support 2 and the steel plate 1 is connected by welding. The steel support 2 is arranged in a "V" shape. The axis of the steel support 2 coincides with the diagonal line of the above-mentioned excised square, so that the compressed steel support 2 is axially The vertical component of the force can be offset with the vertical component of the axial force of the tensile steel support 2, so the cross-section of the connected beam does not need to be enlarged due to the vertical unbalanced force, and the beam 5 and column 6 on the frame do not need to be enlarged, which effectively reduces the The amount of steel used. One end face of the steel support 2 is flush with one side of the steel plate 1, and the other end is located in the cut square area, and this end is provided with an open groove perpendicular to the direction of the steel plate 1. The material of the steel plate 1 and the steel support 2 is Q235, steel Support 2 can be used to provide part of the axial tensile and compressive resistance of the lateral force resistance member. In this embodiment, a steel plate-steel support composite anti-lateral force member utilizes the out-of-plane stiffness of the steel support 2 to constrain the out-of-plane displacement of the steel plate 1, so that the plastic hysteretic energy dissipation capacity of the thin steel plate 1 is significantly improved and reduced. The shock effect caused by the conversion of the tension field is eliminated or significantly reduced; on the other hand, the tension field of the steel plate 1 prevents the instability of the extreme point of the steel support 2 in the structural plane, and the steel support under compression The bearing capacity and energy dissipation capacity of 2 are fully exerted, coupled with the improved energy dissipation capacity of steel plate 1, the lateral force resistant member has excellent seismic performance.

A beam-column structure using a steel plate-steel bracing composite anti-lateral force member in this embodiment includes the above-mentioned steel plate-steel bracing composite anti-lateral force member, and also includes a fishplate 3, a gusset plate 4, and a gusset plate stiffener 7 , beam 5 and column 6, the thickness of the fishplate 3 is twice the thickness of the steel plate 1, one side of the fishplate 3 is welded on the flange of the beam 5 and column 6, and the other side is connected to the steel plate of the lateral force-resisting member 1 Welding, connecting the steel plate-steel support composite lateral force-resistant member with the beam 5 and column 6 to form an organic whole, so that the beam-column structure can absorb and dissipate a large amount of seismic energy under earthquake action, preventing the use of the beam-column structure Objects collapsed in the event of a strong earthquake. The size of the gusset plate 4 is equal to the size of the square cut off on the steel plate 1, the thickness of the gusset plate 4 and the gusset plate stiffener 7 is the same, and a corner is cut off on the gusset plate 4 and the gusset plate stiffener 7, and the size of the cut corner is 20mm , the two right-angled sides of the gusset plate 4 are welded to the flange at the intersection of the beam 5 and the column 6, and the gusset plate stiffener 7 is welded vertically to both sides of the gusset plate 4 to form a “ten”-shaped section. The gusset plate 4 and the node The plate stiffener 7 is used to connect with one end of the steel support 2 of the lateral force-resistant member, and the other end of the steel support 2 is welded to the flange on the beam 5, which not only makes the connection between the lateral force-resistant member and the beam-column structure more reliable, but also The steel support 2 is effectively used as a part of the lateral force resistance system, and works together with the steel plate shear wall to provide better hysteretic energy dissipation capacity and seismic performance. In addition, the above-mentioned welding is a fillet weld, and the strength of the welded part is high, and the connection is reliable.

Example 2

The basic structure of a steel plate-steel support composite anti-lateral force member and the beam-column structure using the member in this embodiment is the same as that of embodiment 1, except that the steel support 2 includes two symmetrical parts, which are respectively placed on the steel plates On both sides of 1, the cross-sectional shape of the steel support 2 composed of the two parts is circular. 1 bolt hole 8, the distance between the bolt hole 8 and the end of the steel support 2 is 175mm, and 15 bolt holes 8 are also provided at the corresponding position of the steel plate 1, the large diameter of the high-strength bolt and nut is 14mm, and the distance between the high-strength bolts is 250mm, The material of steel plate 1 and steel support 2 is Q345. The thickness of the fish plate 3 is 2.5 times the thickness of the steel plate 1, and a corner is cut off on the gusset plate 4 and the gusset plate stiffener 7, and the size of the cut corner is 30 mm.

Example 3

The basic structure of a steel plate-steel support composite anti-lateral force member and the beam-column structure using the member of this embodiment is the same as that of embodiment 1, the difference is that 20 bolt holes 8 are equidistantly opened on the steel support 2 , the distance between the bolt holes 8 and the end of the steel support 2 is 200 mm, and there are 20 bolt holes 8 on the corresponding position of the steel plate 1. The material of support 2 is Q345. The thickness of the fish plate 3 is three times the thickness of the steel plate 1, and a corner is cut off on the gusset plate 4 and the gusset plate stiffener 7, and the size of the cut corner is 40 mm.

In order to better understand the content of the present invention, the manufacturing process of a steel plate-steel support composite lateral force resisting member and a beam-column structure using the member is given now.

To make a beam-column structure using a steel plate-steel support composite lateral force-resistant member of the present invention, first calculate and determine the thickness of the steel plate 1 and the section size and thickness of the rectangular or circular steel support 2 section members according to the double seismic system, and It is decomposed into two trough-shaped or semicircular cross-section rods; then the steel plate 1 is lofted and cut according to the specified size, and the bolt holes 8 are evenly drilled on the steel plate 1 and the steel support 2, and the cut bolt holes 8 are drilled. The steel plate 1 of the hole 8 is in place and reliably welded to the fishplate 3 previously welded on the beam 5 and column 6; then, the gusset plate 4 and the gusset plate stiffener 7 are welded to the joint of the beam 5 and column 6, and the The above two trough-shaped or semi-circular cross-section rods are installed on the steel plate 1 through high-strength bolts and nuts, and combined into a complete box-shaped or tubular cross-section member, and the groove-shaped or semi-circular cross-section rod and The contact part of the steel plate 1 is reliably connected with a fillet weld, and finally the steel support 2 is reliably connected with the gusset plate 4 and the gusset plate stiffener 7 through the fillet weld, and the other end of the steel support 2 is reliably welded with the beam 5. It can be seen that the beam-column structure using the steel plate-steel support composite lateral force-resistant member of the present invention has a simple manufacturing process, and can be manufactured quickly and reliably at the manufacturing level of the construction site.

A steel plate-steel support composite anti-lateral force component and a beam-column structure using the component of the present invention combine the steel plate 1 in the steel plate shear wall with the steel support 2 in the central support system to form a new composite anti-lateral force Components are not a simple mechanical superposition, nor a simple learning from each other; but a real organic combination, which can receive the effect of "1+1 is far greater than 2". On the one hand, the out-of-plane displacement of the steel plate 1 is constrained by the out-of-plane stiffness of the steel support 2, so that the plastic hysteretic energy dissipation capacity of the thin steel plate 1 is significantly improved, the shock effect caused by the conversion of the tension field is reduced, and the deformation force is eliminated or significantly reduced. load noise. On the other hand, the tension field of the steel plate 1 prevents the instability of the extreme point of the steel support 2 in the structural plane, and the bearing capacity and energy dissipation capacity of the steel support 2 under compression are fully utilized, and the steel plate 1 is improved If the energy dissipation capacity is improved, the structure can have excellent anti-seismic performance.

Fig. 8 and Fig. 9 are respectively the hysteretic curve feature diagram of mechanical superimposition of steel frame, steel plate wall and steel support under the reciprocating load and the beam-column structure of the application of steel plate-steel support combined lateral force resistance member of the present invention in reciprocating Hysteretic energy dissipation characteristic diagram under load, the horizontal axis in the figure is the axial displacement, and the vertical axis is the axial force. The sum of the areas surrounded by all hysteretic loops shows the energy dissipation capacity of the structure under earthquake action. The hysteresis The fuller the back curve, the larger the sum of the enclosed areas, indicating that the structure has stronger seismic performance. It can be seen from Figure 8 that under the action of reciprocating loads, the steel frame, steel plate wall, and steel support have obvious signs of buckling degradation, the hysteresis curve is not full, and the energy dissipation capacity is insufficient, indicating that the seismic capacity is very poor; from Figure 9 It can be seen that the hysteretic curve is very full under the reciprocating load of the beam-column structure using the steel plate-steel support composite lateral force resistance member made according to the principle of the present invention, and the energy dissipation capacity is three times that of the steel frame, the steel plate wall and the steel support. This shows that the lateral force resistant component can effectively absorb and dissipate a large amount of seismic energy under earthquake action, thereby protecting the safety of the main structure, showing excellent seismic performance, and fully embodying "the whole is far greater than sum of the parts” effect. A steel plate-steel support combination anti-lateral force member of the present invention and a beam-column structure using the member, constrain the out-of-plane deformation of the steel plate 1 through the steel support 2 so as to avoid the hysteresis curve "pinching"; at the same time, through the pulling force of the steel plate 1 Field-confined compression steel brace 2 often occurs extreme point instability in the structural plane, so as to obtain a composite lateral force-resistant member with excellent seismic performance, and the seismic energy dissipation capacity is greatly improved.

The above schematically describes the present invention and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structural mode and embodiment similar to the technical solution, it shall all belong to the protection scope of the present invention .

Claims (7)

1. A steel plate-steel support combination anti-lateral force member, comprising a steel plate (1) and a steel support (2) integrated with the steel plate (1), characterized in that: the shape of the steel plate (1) is cut A rectangle with two corners on the same side, the shape of the excised part is a square, the steel support (2) includes two symmetrical parts, which are respectively placed on both sides of the steel plate (1), and the steel support (2) composed of the two parts The cross-sectional shape of the support (2) is rectangular or circular, and 10 to 20 bolt holes (8) are equidistantly opened on the steel support (2), and the bolt holes (8) and the steel support (2) ) end is 150-200mm, and 10-20 bolt holes (8) are opened at the corresponding positions of the steel plate (1), and the two parts of the steel support (2) are connected with the steel plate (1) respectively. ) are connected by high-strength bolts and nuts, the high-strength bolts and nuts are connected by high-strength gaskets, the steel support (2) and the steel plate (1) are connected by welding, and the steel support (2) Arranged in a "V" shape, the axis of the steel support (2) coincides with the diagonal of the excised square, and the end face of the steel support (2) is flat with one side of the steel plate (1) The other end is located in the cut square area, and this end is provided with an open groove in the direction perpendicular to the steel plate (1), and the steel support (2) is used to provide a part of the lateral force resistant member for axial tension, Stress resistance. 2. The steel plate-steel support composite anti-lateral force member according to claim 1, characterized in that: the major diameter of the high-strength bolts and nuts is 12mm or 14mm, and the distance between the high-strength bolts is 200-300mm. 3. The steel plate-steel support composite anti-lateral force member according to claim 2, characterized in that: the two parts of the steel support (2) are channel-shaped section steel made by cold working or round pipes by splitting Obtained semi-circular section steel. 4. The steel plate-steel support composite anti-lateral force member according to claim 3, characterized in that: the materials of the steel plate (1) and the steel support (2) are both Q235 or Q345. 5. A beam-column structure applying the lateral force-resistant member according to any one of claims 1 to 4, characterized in that it includes the steel plate-steel support composite lateral force resistant member described in any one of claims 1-4 , also includes fishplate (3), gusset plate (4), gusset plate stiffener (7), beam (5) and column (6), the thickness of said fishplate (3) is steel plate (1) 2 to 3 times the thickness, one side of the fishplate (3) is welded to the flange of the beam (5) and column (6), and the other side is welded to the steel plate (1) of the lateral force resistant member, The size of the gusset plate (4) is equal to the size of the cut square on the steel plate (1), the thickness of the gusset plate (4) is the same as that of the gusset plate stiffener (7), and the gusset plate (4) ) are welded to the flange at the corner of the beam (5) and column (6), and the gusset plate stiffener (7) is welded vertically to both sides of the gusset plate (4), forming a "ten" Glyph-shaped section, the gusset plate (4) and the gusset plate stiffener (7) are used to connect with one end of the steel support (2) of the lateral force-resistant member, and the other end of the steel support (2) is connected to the beam (5) The flanges are welded together. 6. The beam-column structure applying the lateral force-resistant member according to any one of claims 1 to 4 according to claim 5, characterized in that: the welding is a fillet weld. 7. The beam-column structure applying the lateral force-resistant member according to any one of claims 1 to 4 according to claim 6, characterized in that: the gusset plate (4) and the gusset plate stiffener (7) A corner is cut off on both sides, and the size of the cut corner is 20-40mm.

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