Connecting structure for shock insulation column feet of multi-story and high-rise frame structure in high-intensity area

Abstract

The utility model relates to the technical field of civil engineering buildings, in particular to a connecting structure of a shock insulation column base of a multi-story and high-rise frame structure in a high-intensity area, which comprises a steel column, a short steel rib beam, a shock insulation support and a lower buttress, bolt holes are symmetrically arranged on two sides of the steel column, one end of the short steel rib beam is fixedly connected with a support plate, and the other end of the short steel rib beam is fixedly connected with a shock insulation support. And through holes are formed in the positions, corresponding to the bolt holes, of the side faces of the supporting plates, screw rods are inserted into the bolt holes and the through holes, nuts are in threaded connection with the outer surfaces of one ends of the screw rods, and a base is fixedly connected to the bottom of the steel column. The steel column and the two short steel reinforced beams have the advantages that assembly is convenient, the steel column and the two short steel reinforced beams can be separately arranged on a transport vehicle to be transported, due to the fact that the steel column and the short steel reinforced beams are narrow, the purpose of convenient transportation can be achieved, when self-compacting concrete is poured into the steel column, the surface of the screw is arc-shaped, resistance to the self-compacting concrete is small, and the service life of the screw is prolonged. And the filling efficiency of the self-compacting concrete is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering construction, in particular to a connection structure of earthquake-isolating column feet of a multi-story frame structure in a high-intensity area. Background Art

[0002] Earthquake is a natural phenomenon that cannot be avoided by human society. In order to reduce casualties and property losses in earthquakes, seismic isolation technology has become increasingly mature and has become one of the most effective means. Newly built schools, kindergartens and other buildings located in high-intensity fortification areas and earthquake-focused monitoring and defense areas should adopt seismic isolation and shock absorption technologies in accordance with relevant national regulations to ensure that they can meet normal use requirements when an earthquake occurs in the area. For high-rise steel structure seismic isolation buildings and large-span steel structure seismic isolation buildings in high-intensity areas, especially when the construction site category is Class III or Class IV, the seismic force after seismic isolation is still very large, resulting in a large cross-section and wall thickness of the bottom steel column. The seismic isolation layer is the embedded end of the upper steel structure, and the bottom of the upper pier is approximately hinged to the seismic isolation support. Therefore, the frame beam is required to provide strong rigidity and a large bearing capacity to balance the bending moment of the bottom steel frame column to ensure the effectiveness of embedding.

[0003] A connection structure of the seismic isolation column foot of a multi-story steel frame structure in a high-intensity area disclosed in Chinese patent CN220725441U, the connection structure of the seismic isolation column foot of the multi-story steel frame structure in a high-intensity area, is formed by welding a section of steel frame in a steel concrete beam and a steel column in an upper pier in a steel structure factory to form a steel frame structure connection node, and then a complete steel frame beam is formed by splicing another section of steel frame on site, and then poured together with reinforced concrete to form a seismic isolation layer steel concrete beam pier system, which will provide greater rigidity and bearing capacity. Seismic technology is becoming a trend, and the utility model has a wide range of application prospects in high-rise steel structures and large-span steel structures in high-intensity areas. However, the connection structure of the seismic isolation column foot of the multi-story steel frame structure in a high-intensity area has the following defects while solving the problem:

[0004] 1. Before implementation, a section of steel concrete beam steel frame and the steel column in the upper pier are welded in the steel structure factory. The steel concrete beam steel frame and the steel column in the upper pier form a cross shape. Therefore, it not only has a certain length, but also is relatively wide. Therefore, it is difficult to transport from the steel structure factory to the site.

[0005] 2. Holes are opened on the stiffening plate, and self-compacting concrete can be poured through the holes. However, in actual construction, the efficiency of pouring self-compacting concrete is very fast. The part without holes on the stiffening plate is a flat structure, so the resistance is still very large, which greatly affects the pouring efficiency of self-compacting concrete. Utility Model Content

[0006] The purpose of the utility model is to solve at least one of the technical defects described in the background technology.

[0007] To this end, one purpose of the utility model is to propose a connection structure for the base of seismic isolation columns of multi-story frame structures in high-intensity areas, aiming to solve the problem in the prior art that the connection structure for the base of seismic isolation columns of multi-story steel frame structures in high-intensity areas is difficult to transport and has low pouring efficiency.

[0008] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a connection structure of the base of the seismic isolation column of a multi-story frame structure in a high-intensity area, including a steel column, a short steel frame beam, a seismic isolation bearing and a lower pier, wherein bolt holes are symmetrically opened on both sides of the steel column, one end of the short steel frame beam is fixedly connected to a support plate, a through hole is opened on the side of the support plate at a position corresponding to the bolt hole, screws are inserted into the bolt holes and the through holes, a nut is threadedly connected to the outer surface of one end of the screw, the bottom of the steel column is fixedly connected to a base, and the seismic isolation bearing is fixedly installed between the base and the lower pier.

[0009] Preferably, any of the above schemes is that positioning holes are symmetrically opened on both sides of the steel column, and a positioning block is fixedly connected to one side of the support plate, and the positioning block is inserted into the positioning hole. When assembling the short steel frame beam and the steel column, the positioning block can be inserted into the positioning hole first, so that the short steel frame beam can be preliminarily installed on the steel column, and then the screw rod is inserted into the through hole and the bolt hole to facilitate the installation of the screw rod.

[0010] Preferably, a sleeve is fixedly connected to the position of the inner wall of the steel column corresponding to the bolt hole, and a support frame is fixedly connected to the position of the inner wall of the steel column corresponding to the positioning hole, thereby increasing the contact area between the screw and the steel column, thereby reducing the force borne per unit area and improving firmness.

[0011] Preferably, any of the above schemes has a first groove at the bottom of the base and a second groove at the top of the lower pier, which can position the upper and lower sides of the seismic isolation bearing to avoid the problem of excessive stress and damage to the bolts used to fix the seismic isolation bearing due to severe vibration.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] 1. It is easy to assemble, so the steel column and two short steel beams can be separately loaded on a transport vehicle for transportation. Since the steel column and the short steel beam are narrow, they can be easily transported.

[0014] 2. The screw runs through the support plate and the steel column. When a short steel beam on one side is subjected to force, the force can be transmitted to the short steel beam on the other side through the screw. Due to the setting of the support plate, the walls on both sides of the steel column are subjected to force at the same time, thereby improving the firmness. However, when pouring self-compacting concrete in the steel column, the surface of the screw is curved, so the resistance to the self-compacting concrete is small, thereby ensuring the pouring efficiency of the self-compacting concrete.

[0015] 3. When assembling two short steel beams with steel columns, the positioning blocks are inserted into the positioning holes to initially fix the two short steel beams on the steel columns so that the short steel beams will not shake. Then the screws are inserted into the bolt holes and through holes and the nuts are used to thread them on the screws. In the process of installing the screws and nuts, there is no need to rely on manpower to support the short steel beams so that the through holes correspond to the bolt holes, which facilitates the installation of the short steel beams.

[0016] 4. By setting the sleeve and the support frame, the contact area between the screw and the side wall of the steel column and the contact area between the positioning block and the side wall of the steel column can be increased, thereby reducing the force per unit area, thereby improving the firmness of the connection between the steel column and the support plate.

[0017] 5. The fixing plates at the top and bottom of the seismic isolation bearing are respectively located in the first groove and the second groove, so that when the seismic isolation bearing is subjected to horizontal vibration force when vibrating violently, the first groove and the second groove provide support force for the fixing plates at the top and bottom of the seismic isolation bearing, which can reduce the force on the connection parts between the seismic isolation bearing and the base and the lower pier, thereby further improving the firmness of the structural connection.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram according to the utility model.

[0021] Figure 2 It is a structural schematic diagram of the connection between the interior of the steel column and the short steel beam according to the utility model.

[0022] Figure 3 It is a structural schematic diagram of a steel column according to the utility model.

[0023] Figure 4 It is a structural schematic diagram of a short steel beam according to the utility model.

[0024] Figure 5It is a structural schematic diagram of the lower pier according to the utility model.

[0025] Among them: 1. Steel column, 11. Bolt hole, 12. Base, 13. Positioning hole, 14. Sleeve, 15. Support frame, 16. First groove, 2. Short steel beam, 21. Support plate, 22. Through hole, 23. Positioning block, 24. Steel bar hole, 3. Seismic isolation bearing, 4. Lower pier, 41. Second groove, 42. Embedded bolt, 5. Screw, 51. Nut, 6. Stud. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model provides a connection structure for seismic isolation column feet of multi-story frame structures in high-intensity areas.

[0029] Embodiment 1:

[0030] like Figure 1-5As shown, it includes a steel column 1, a short steel beam 2, a seismic isolation support 3 and a lower pier 4. Bolt holes 11 are symmetrically opened on both sides of the steel column 1. One end of the short steel beam 2 is fixedly connected to a support plate 21. A through hole 22 is opened at a position corresponding to the bolt hole 11 on the side of the support plate 21. Screws 5 are inserted into the bolt holes 11 and the through holes 22. A nut 51 is threadedly connected to the outer surface of one end of the screw 5. By tightening the nut 51, the support plate 21 can be fixed to the steel column 1, so that the short steel beam 2 is installed on the steel column 1. The bottom of the steel column 1 is fixedly connected to the base 12 A hole for connecting the seismic isolation bearing 3 is opened on the base 12, and an embedded bolt 42 is arranged in the lower pier 4. The seismic isolation bearing 3 is fixedly installed between the base 12 and the lower pier 4. Holes are arranged on the fixing plates at the top and bottom of the seismic isolation bearing 3. The holes on the fixing plate at the bottom of the seismic isolation bearing 3 are sleeved on the surface of the embedded bolt 42, and then the bolt caps are used for connection and tightening. Bolts are inserted into the holes on the fixing plate at the top of the seismic isolation bearing 3 and the holes on the base 12, and then connected with the bolts through the bolt caps, so that the base 12 and the seismic isolation bearing 3 can be fixed together.

[0031] Specifically, a steel bar hole 24 is provided on the side surface of the short steel beam 2 for inserting stirrups.

[0032] Specifically, the outer surfaces of the steel column 1 and the short steel beam 2 are fixedly connected with a plurality of bolts 6, which is conducive to the full connection between the concrete and the steel column 1 and the short steel beam 2, thereby improving the overall firmness.

[0033] Embodiment 2:

[0034] like Figure 2-4 As shown, on the basis of Example 1, positioning holes 13 are symmetrically opened on both sides of the steel column 1, and a positioning block 23 is fixedly connected to one side of the support plate 21. When the two short steel frame beams 2 are assembled with the steel column 1, the positioning block 23 is inserted into the positioning hole 13, and the two short steel frame beams 2 can be initially fixed on the steel column 1 so that the short steel frame beams 2 will not shake. At this time, the screw rod 5 is inserted into the bolt hole 11 and the through hole 22, and the nut 51 is threadedly connected to the screw rod 5, so that the two short steel frame beams 2 can be fixed on the steel column 1. Because the positioning block 23 preliminarily fixes the support plate 21, during the installation of the screw rod 5 and the nut 51, there is no need to rely on manpower to support the short steel frame beam 2 so that the through hole 22 corresponds to the bolt hole 11, thereby facilitating the installation of the short steel frame beam 2.

[0035] Further preferably, a sleeve 14 is fixedly connected to the position of the inner wall of the steel column 1 corresponding to the bolt hole 11. Since the side wall of the steel column 1 is relatively thin, the contact area with the screw 5 is small, so that the force borne by the screw 5 per unit area is larger. By setting the sleeve 14, the sleeve 14 is sleeved on the outer surface of the screw 5 to increase the contact area between the screw 5 and the side wall of the steel column 1, thereby reducing the force borne per unit area, thereby improving the firmness of the connection between the steel column 1 and the support plate 21. A support frame 15 is fixedly connected to the position of the inner wall of the steel column 1 corresponding to the positioning hole 13, and the design principle of the support frame 15 is the same as that of the sleeve 14.

[0036] Embodiment three:

[0037] like Figure 3 and Figure 5 As shown, on the basis of Example 1 or Example 2, a first groove 16 is opened at the bottom of the base 12, a second groove 41 is opened at the top of the lower pier 4, and the top and bottom of the seismic isolation bearing 3 are provided with fixing plates for fixing the seismic isolation bearing 3. When the seismic isolation bearing 3 is installed, the fixing plates at the top and bottom of the seismic isolation bearing 3 are respectively arranged in the first groove 16 and the second groove 41, so that when the seismic isolation bearing 3 is subjected to horizontal vibration force when vibrating violently, the first groove 16 and the second groove 41 provide supporting force for the fixing plates at the top and bottom of the seismic isolation bearing 3, which can reduce the force on the embedded bolts 42 and the bolts on the top of the base 12 and the seismic isolation bearing 3, avoid the problem of shear breakage of the embedded bolts 42 and the bolts, and further improve the firmness of the structural connection, so that it is suitable for buildings such as schools in high-intensity areas.

[0038] The working principle of the utility model is as follows: when in use, the seismic isolation bearing 3 is fixedly installed on the lower pier 4, and then the steel column 1 is fixedly installed on the top of the seismic isolation bearing 3 through the base 12, and then the short steel frame beam 2 is lifted by a sling, so that the positioning block 23 on the support plate 21 is inserted into the positioning hole 13 on the steel column 1, and then the screw 5 is inserted into the through hole 22 on the support plate 21 and the bolt hole 11 on the steel column 1, and the nut 51 is threadedly connected to the surface of the screw 5 and tightened, so as to fix the short steel frame beam 2 on the steel column 1, and finally the longitudinal reinforcement and stirrups are tied between the steel column 1 and the short steel frame beam 2, and the formwork is supported, and the concrete beam and the upper pier are cast on the surface of the steel column 1 and the short steel frame beam 2, and the self-compacting concrete is poured into the steel column 1.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. By arranging symmetrical bolt holes 11 on the steel column 1, arranging a support plate 21 at one end of the short steel frame beam 2, and opening a through hole 22 corresponding to the bolt hole 11 on the support plate 21, when the steel column 1 and the two short steel frame beams 2 are assembled, the screw rod 5 can pass through the through hole 22 and the bolt hole 11, and then the nut 51 is threadedly connected to the outer surface of the screw rod 5 to fix the short steel frame beam 2 on the steel column 1. Therefore, the steel column 1 and the two short steel frame beams 2 can be separately loaded on a transport vehicle for transportation. Since the steel column 1 and the short steel frame beam 2 are narrow, the purpose of easy transportation can be achieved.

[0041] 2. After the short steel beam 2 is installed on the steel column 1, a part of the screw 5 located in the steel column 1 is equivalent to the stiffening plate in the connection structure of the base of the seismic isolation column of a multi-story steel frame structure in a high-intensity area disclosed in Chinese patent CN220725441U. When a short steel beam 2 on one side is subjected to force, the force can be transmitted to the short steel beam 2 on the other side through the screw 5. Due to the setting of the support plate 21, the two side walls of the steel column 1 are subjected to force at the same time, thereby improving the firmness and avoiding the problem of tearing at the connection between the short steel beam 2 and the steel column 1. However, when pouring self-compacting concrete in the steel column 1, the surface of the screw 5 is curved, so the resistance to the self-compacting concrete is small, thereby ensuring the pouring efficiency of the self-compacting concrete.

[0042] 3. By setting positioning holes 13 on both sides of the steel column 1 and setting positioning blocks 23 on one side of the support plate 21, when the two short steel frame beams 2 are assembled with the steel column 1, the positioning blocks 23 are inserted into the positioning holes 13, so that the two short steel frame beams 2 can be initially fixed on the steel column 1, so that the short steel frame beams 2 will not shake, and then the screw rod 5 is inserted into the bolt hole 11 and the through hole 22 and the nut 51 is threadedly connected to the screw rod 5, so that the two short steel frame beams 2 can be fixed on the steel column 1. Because the positioning blocks 23 preliminarily fix the support plate 21, during the installation of the screw rod 5 and the nut 51, there is no need to rely on manpower to support the short steel frame beam 2 so that the through hole 22 corresponds to the bolt hole 11, thereby facilitating the installation of the short steel frame beam 2.

[0043] 4. By providing the sleeve 14 and the support frame 15, the contact area between the screw 5 and the side wall of the steel column 1 and the contact area between the positioning block 23 and the side wall of the steel column 1 can be increased, thereby reducing the force borne per unit area, thereby improving the firmness of the connection between the steel column 1 and the support plate 21.

[0044] 5. By setting a first groove 16 at the bottom of the base 12 and a second groove 41 at the top of the lower pier 4, after the seismic isolation bearing 3 is installed between the base 12 and the lower pier 4, the fixing plates at the top and bottom of the seismic isolation bearing 3 are respectively located in the first groove 16 and the second groove 41, so that when the seismic isolation bearing 3 vibrates violently and is subjected to horizontal vibration force, the first groove 16 and the second groove 41 provide supporting force for the fixing plates at the top and bottom of the seismic isolation bearing 3, which can reduce the force on the connecting parts of the seismic isolation bearing 3 with the base 12 and the lower pier 4, thereby further improving the firmness of the structural connection.

Claims

1. A connection structure for seismic isolation column feet of a multi-story frame structure in a high-intensity area, comprising a steel column (1), a short steel beam (2), a seismic isolation support (3) and a lower pier (4), characterized in that: Bolt holes (11) are symmetrically provided on both sides of the steel column (1); one end of the short steel beam (2) is fixedly connected to a support plate (21); a through hole (22) is provided on the side of the support plate (21) at a position corresponding to the bolt hole (11); screw rods (5) are inserted into the inside of the bolt hole (11) and the through hole (22); a nut (51) is threadedly connected to the outer surface of one end of the screw rod (5); the bottom of the steel column (1) is fixedly connected to a base (12); and the seismic isolation support (3) is fixedly installed between the base (12) and the lower pier (4).

2. The connection structure of seismic isolation column feet of multi-story frame structures in high-intensity areas according to claim 1 is characterized in that: Positioning holes (13) are symmetrically provided on both sides of the steel column (1), and a positioning block (23) is fixedly connected to one side of the support plate (21), and the positioning block (23) is inserted into the positioning hole (13).

3. The connection structure of seismic isolation column feet of multi-story frame structures in high-intensity areas according to claim 2 is characterized in that: A sleeve (14) is fixedly connected to a position of the inner wall of the steel column (1) corresponding to the bolt hole (11), and a support frame (15) is fixedly connected to a position of the inner wall of the steel column (1) corresponding to the positioning hole (13).

4. The connection structure of seismic isolation column feet of multi-story frame structures in high-intensity areas according to claim 1 is characterized in that: A first groove (16) is formed at the bottom of the base (12), and a second groove (41) is formed at the top of the lower pier (4).

5. The connection structure of seismic isolation column feet of multi-story frame structures in high-intensity areas according to claim 1 is characterized in that: A steel bar hole (24) is provided on the side surface of the short steel beam (2).

6. The connection structure of seismic isolation column feet of multi-story frame structures in high-intensity areas according to claim 1 is characterized in that: The outer surfaces of the steel column (1) and the short steel beam (2) are both fixedly connected with a plurality of bolts (6).

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