A prestressed frame structure for a building

Abstract

The present invention belongs to the technical field of prestressed steel frame building structure, and specifically relates to a prestressed frame structure for buildings; the main beam, the auxiliary beam and the column are arranged into a parallel four-bar linkage mechanism, and a prestressed anchor cable is arranged between the main beam and the auxiliary beam; the four-bar linkage mechanism can produce deformation during vibration to avoid rigid damage, and the prestressed anchor cable can keep the frame stable under static conditions and can drive the frame to reset after the frame is deformed; since the prestressed anchor cable is arranged between the main beam and the auxiliary beam, as long as the two produce relative displacement, the prestressed anchor cable can be stretched to resist lateral loads, and is not restricted by the tilt direction of the frame, thereby fully utilizing the load capacity of the anchor cable; in addition, the present invention uses a hydraulic damper instead of a mechanical damper, the damping size is easier to control, and the mechanical wear of the damper is avoided, thereby increasing the service life.

Description

Technical Field

[0001] The invention belongs to the technical field of prestressed steel frame building structures, and in particular relates to a prestressed frame structure used for buildings. Background Art

[0002] The beam-column joints of steel frame building structures have a variety of connection methods, such as hinged and rigid connections. Among them, hinged nodes can be deformed appropriately when the building vibrates to avoid rigid failure. In order to keep the hinged nodes stable in static conditions, reinforcement structures such as cable stays are generally provided between the beams and columns. These reinforcement structures can produce tensile deformation as the building vibrates and drive the beams and columns to reset after the vibration occurs. However, when the frame of the cable-stayed reinforcement structure tilts, only the cable stays on one side bear the load, resulting in the strength of the cable stays on the other side not being fully utilized. In addition, in order to dissipate the vibration energy, a damping mechanism is generally provided. However, the existing damping mechanism is generally in the form of a friction plate, which has a short service life and is prone to damping failure after long-term use, affecting the energy absorption effect. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a prestressed frame structure for buildings which can fully utilize the strength of the material and increase the service life.

[0004] To achieve the above-mentioned object and other related objects, the present invention provides a prestressed frame structure for a building, comprising:

[0005] Columns, at least two of which are spaced apart from each other;

[0006] A main beam, both ends of which are hinged to the two columns respectively;

[0007] A secondary beam, wherein both ends of the secondary beam are respectively hinged to the two upright posts, and the secondary beam is arranged in parallel with the main beam, and the two upright posts, the main beam and the secondary beam form a parallel four-bar linkage;

[0008] A prestressed anchor cable is arranged between the main beam and the secondary beam, and the prestressed anchor cable is assembled to be able to maintain the main beam and the secondary beam in a preset relative position, and the preset relative position refers to the relative position between the main beam and the secondary beam when the two columns are in a vertical state;

[0009] A hydraulic damping mechanism acts between the main beam and the auxiliary beam, and the hydraulic damping mechanism is configured to cause resistance to the relative movement between the main beam and the auxiliary beam.

[0010] In an optional embodiment of the present invention, two first anchor seats and two second anchor seats are provided on the main beam, the two first anchor seats are respectively arranged near the two ends of the main beam and are fixedly connected to the main beam, and the two second anchor seats are respectively arranged near the two ends of the main beam and are movably connected to the main beam along a first direction, and the first direction is the length direction of the main beam; the prestressed anchor cable includes two anchor heads and a plurality of anchor cables, the two anchor heads are respectively slidably matched with the first anchor seat and the second anchor seat at the two ends of the main beam, the anchor head includes a first step portion and a second step portion, and each of the anchor cables is tensioned between the two anchor heads; the relative position of the second anchor seat and the auxiliary beam in the first direction is fixed, and the two are relatively movably arranged in the vertical direction; when the main beam and the auxiliary beam are located at the preset relative position, the first step portion abuts against the first anchor seat, and the second step portion abuts against the second anchor seat.

[0011] In an optional embodiment of the present invention, the hydraulic damping mechanism is arranged between the main beam and the second anchor seat, and the hydraulic damping mechanism is configured so that when the offset of the relative position between the main beam and the secondary beam relative to the preset relative position increases, the damping of the hydraulic damping mechanism can increase accordingly.

[0012] In an optional embodiment of the present invention, the hydraulic damping mechanism includes a piston and a hydraulic cylinder, the piston is slidably arranged in the hydraulic cylinder, the piston separates the hydraulic cylinder into a first chamber and a second chamber, the first chamber and the second chamber are connected by an explosion-proof pipeline, and an adjustable throttle valve is provided on the explosion-proof pipeline; one of the hydraulic cylinder and the piston is fixedly connected to the main beam, and the other is fixedly connected to the second anchor seat.

[0013] In an optional embodiment of the present invention, the adjustable throttle valve is installed on the main beam, and a linkage mechanism is provided between the adjustable throttle valve and the second anchor seat, and the linkage mechanism is configured to change the flow area of ​​the adjustable throttle valve when the second anchor seat is relatively displaced relative to the main beam along the first direction.

[0014] In an optional embodiment of the present invention, the adjustable throttle valve includes a valve core and a valve housing, the valve core is rotatably arranged in the valve housing, a blind hole is provided in the center of the valve core, a damping slit is provided on the side wall of the valve core, the damping slit is arranged in an arc shape along the circumference of the valve core, and the damping slit passes through the inner wall of the blind hole to the outer wall of the valve core; an arc groove opposite to the damping slit is provided on the inner wall of the valve housing, and when the valve core rotates, the length of the communication area between the damping slit and the arc groove can be changed; a first interface and a second interface are provided on the valve housing, the first interface is communicated with the blind hole, and the second interface is communicated with the arc groove; the first interface is communicated with the first chamber, and the second interface is communicated with the second chamber.

[0015] In an optional embodiment of the present invention, the linkage mechanism includes a swing arm fixedly connected to the valve core, and a trigger rod fixedly connected to the second anchor seat, the swing arm is provided with a strip groove, the trigger rod is inserted into the strip groove and forms a sliding fit with the strip groove.

[0016] In an optional embodiment of the present invention, the hydraulic cylinder is fixedly connected to the main beam, the piston is fixedly connected to the second anchor seat, and the second anchor seat constitutes a piston rod that slidably cooperates with the hydraulic cylinder.

[0017] In an optional embodiment of the present invention, a shift fork is provided on the second anchor seat, the shift fork is provided with a U-shaped groove, an annular groove is provided on the secondary beam, and the U-shaped groove of the shift fork is clamped in the annular groove.

[0018] In an optional embodiment of the present invention, the main beam is an I-beam, a T-beam or a square steel beam.

[0019] The technical effect of the present invention is that the main beam, the auxiliary beam and the column are arranged into a parallel four-bar linkage, and a prestressed anchor cable is arranged between the main beam and the auxiliary beam; the four-bar linkage can produce deformation during vibration to avoid rigid damage, and the prestressed anchor cable can keep the frame stable under static conditions and can drive the frame to reset after the frame is deformed; since the prestressed anchor cable is arranged between the main beam and the auxiliary beam, as long as the two produce relative displacement, the prestressed anchor cable can be stretched to resist the lateral load, which is not restricted by the tilt direction of the frame and fully utilizes the load capacity of the anchor cable; in addition, the present invention uses a hydraulic damper instead of a mechanical damper, the damping size is easier to control, and the mechanical wear of the damper is avoided, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional diagram of a prestressed frame structure for a building provided by an embodiment of the present invention;

[0021] Figure 2 yes Figure 1I partial enlarged view;

[0022] Figure 3 is a front view of a prestressed frame structure for a building provided by an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 II partial enlarged view;

[0024] Figure 5 is a cross-sectional view of a prestressed frame structure for a building provided by an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 Partial enlarged view of III;

[0026] Figure 7 yes Figure 4 AA section view;

[0027] Figure 8 yes Figure 4 BB cross-sectional view;

[0028] Fig. 9 yes Figure 8 CC section view;

[0029] Fig.10 It is a front view of a prestressed frame structure for a building provided by an embodiment of the present invention in an inclined state;

[0030] Fig.11 is a cross-sectional view of a prestressed frame structure for a building provided by an embodiment of the present invention in an inclined state;

[0031] Fig.12 yes Fig.11 A partial enlarged view of IV;

[0032] Fig.13 yes Fig.11 A local magnified view of V;

[0033] Fig.14 When the prestressed frame structure for a building provided by an embodiment of the present invention is in an inclined state, Fig. 9 a cross-sectional view of the area shown;

[0034] Explanation of the reference numerals in the drawings: 10, column; 20, main beam; 21, first anchor seat; 22, second anchor seat; 221, fork; 222, trigger rod; 23, hydraulic damping mechanism; 231, hydraulic cylinder; 232, piston; 24, adjustable throttle valve; 241, valve housing; 2411, arc groove; 242, valve core; 2421, blind hole; 2422, damping slot; 243, swing arm; 244, first interface; 245, second interface; 30, sub-beam; 31, annular groove; 40, prestressed anchor cable; 41, anchor head; 411, first step portion; 412, second step portion; 42, anchor cable. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0036] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0037] Prestressed steel frame structure is a building structure that combines prestressing technology and steel structure. Prestressing technology can effectively improve the rigidity and stability of the structure by introducing pre-set stress into the structure. This prestressing can offset the stress caused by some external loads, thereby reducing the deformation and vibration of the structure. Since prestressing can improve the bearing capacity of the structure, less material can be used in the design to achieve the same bearing requirements, which not only reduces the cost, but also reduces the weight of the structure, which is conducive to foundation design and construction. Prestressed steel frame structure shows better seismic performance under earthquake action. Prestressing can increase the damping of the structure and reduce the transmission of seismic energy, thereby improving the overall seismic resistance of the structure. Prestressed steel frame structure can be prefabricated in the factory and then assembled on site, which greatly improves the flexibility and efficiency of construction. The quality of prefabricated components is easier to control, reducing the errors and risks of on-site construction. Prestressing technology is particularly suitable for large-span structures, such as gymnasiums, exhibition halls and airports. Through prestressing, the deflection and deformation in large-span structures can be effectively reduced, and the stability and performance of the structure can be improved.

[0038] The beam-column joints of steel frame building structures have a variety of connection methods, such as hinged and rigid connections. Among them, hinged nodes can be deformed appropriately when the building vibrates to avoid rigid failure. In order to keep the hinged nodes stable in static conditions, reinforcement structures such as cable stays are generally provided between the beams and columns. These reinforcement structures can produce tensile deformation as the building vibrates and drive the beams and columns to reset after the vibration occurs. However, when the frame of the cable-stayed reinforcement structure tilts, only the cable stays on one side bear the load, resulting in the strength of the cable stays on the other side not being fully utilized. In addition, in order to dissipate the vibration energy, a damping mechanism is generally provided. However, the existing damping mechanism is generally in the form of a friction plate, which has a short service life and is prone to damping failure after long-term use, affecting the energy absorption effect. To this end, the present invention configures the main beam, the auxiliary beam and the column into a parallel four-bar linkage, and arranges a prestressed anchor cable between the main beam and the auxiliary beam; the four-bar linkage can deform during vibration to avoid rigid damage, and the prestressed anchor cable can keep the frame stable under static conditions, and can drive the frame to reset after the frame is deformed; since the prestressed anchor cable is arranged between the main beam and the auxiliary beam, as long as the two produce relative displacement, the prestressed anchor cable can be stretched to resist the lateral load, and is not restricted by the tilt direction of the frame, thereby fully utilizing the load capacity of the anchor cable; in addition, the present invention uses a hydraulic damper instead of a mechanical damper, the damping size is easier to control, and the mechanical wear of the damper is avoided, thereby increasing the service life.

[0039] See also Figures 1 to 14 As shown, the technical solution of the present invention is described in detail below in conjunction with specific embodiments:

[0040] See also Figures 1 to 4 As shown, the prestressed frame structure for a building provided by an embodiment of the present invention comprises a column 10, a main beam 20, a sub-beam 30, a prestressed anchor cable 40 and a hydraulic damping mechanism 23; at least two of the columns 10 are arranged at intervals; the two ends of the main beam 20 are respectively hinged to the two columns 10; the two ends of the sub-beam 30 are respectively hinged to the two columns 10, and the sub-beam 30 is arranged in parallel with the main beam 20, and the two columns 10, the main beam 20 and the sub-beam 30 form a parallel four-bar linkage; the prestressed The prestressed anchor cable 40 is arranged between the main beam 20 and the auxiliary beam 30, and the prestressed anchor cable 40 is assembled to be able to maintain the main beam 20 and the auxiliary beam 30 in a preset relative position, and the preset relative position refers to the relative position between the main beam 20 and the auxiliary beam 30 when the two columns 10 are in a vertical state; the hydraulic damping mechanism 23 acts between the main beam 20 and the auxiliary beam 30, and the hydraulic damping mechanism 23 is configured to be able to cause resistance to the relative movement of the main beam 20 and the auxiliary beam 30.

[0041] By setting a prestressed anchor cable 40 between the main beam 20 and the auxiliary beam 30, the preset relative position of the two can be effectively maintained, thereby increasing the overall stability of the structure, especially when the external load changes; the hydraulic damping mechanism 23 set can provide resistance between the main beam 20 and the auxiliary beam 30, which helps to reduce the vibration and impact caused by relative movement, and improve the seismic resistance and dynamic response performance of the structure; the setting of the hydraulic damping mechanism 23 can adjust the resistance size according to actual usage requirements, which provides flexibility for users and can make adaptive adjustments according to different load conditions.

[0042] See also Figure 5 , Figure 6 As shown, in an optional embodiment of the present invention, two first anchor seats 21 and two second anchor seats 22 are provided on the main beam 20, the two first anchor seats 21 are respectively arranged near the two ends of the main beam 20 and are fixedly connected to the main beam 20, and the two second anchor seats 22 are respectively arranged near the two ends of the main beam 20 and are movably connected to the main beam 20 along a first direction, and the first direction is the length direction of the main beam 20; the prestressed anchor cable 40 includes two anchor heads 41 and a plurality of anchor cables 42, and the two anchor heads 41 are respectively connected to the two ends of the main beam 20 The first anchor seat 21 and the second anchor seat 22 are slidably matched, the anchor head 41 includes a first step portion 411 and a second step portion 412, and each anchor cable 42 is tensioned between the two anchor heads 41; the second anchor seat 22 and the sub-beam 30 are fixedly arranged in a relative position in the first direction, and the two are relatively movable in the vertical direction; when the main beam 20 and the sub-beam 30 are located at the preset relative position, the first step portion 411 abuts against the first anchor seat 21, and the second step portion 412 abuts against the second anchor seat 22.

[0043] The following combination Figure 5 , Figure 6 ,as well as Figures 10 to 13 , the working principle of the prestressed anchor cable 40 is described in detail:

[0044] In static state, Figure 5 , Figure 6 As shown, the anchor head 41 at the left end is in conflict with the first anchor seat 21 and the second anchor seat 22 at the left end, and the anchor head 41 at the right end is in conflict with the first anchor seat 21 and the second anchor seat 22 at the right end. At this time, the main beam 20 and the auxiliary beam 30 are maintained at the preset relative position under the action of the prestressed anchor cable 40, and the steel frame is maintained in a non-inclined state; when the steel frame tilts to the right, as shown in FIG. Figures 10 to 13As shown in FIG. 1 , the main beam 20 is displaced to the right relative to the auxiliary beam 30. At this time, the first anchor seat 21 at the left end is separated from the anchor head 41 at the left end, and the anchor head 41 at the left end is tightened by the second anchor seat 22 at the left end. The second anchor seat 22 at the right end is separated from the anchor head 41 at the right end, and the anchor head 41 at the right end is tightened by the first anchor seat 21 at the right end. At this time, the tension of the anchor cable 42 can drive the main beam 20 to reset to the left relative to the auxiliary beam 30. Similarly, when the steel frame tilts to the left, the stress conditions of each component are the same as those of the steel frame. Figures 10 to 13 The states of the components are symmetrical, that is, the tension of the anchor cable 42 can drive the main beam 20 to reset to the right relative to the auxiliary beam 30. From the above principle, it can be seen that the prestressed anchor cable 40 can provide effective reset potential energy whether the steel frame is tilted to the left or to the right.

[0045] See also Figure 2 , Figure 4 , Figure 6 As shown, in an optional embodiment of the present invention, the hydraulic damping mechanism 23 is arranged between the main beam 20 and the second anchor seat 22, and the hydraulic damping mechanism 23 is configured so that when the offset between the relative position of the main beam 20 and the auxiliary beam 30 relative to the preset relative position increases, the damping of the hydraulic damping mechanism 23 can increase accordingly. Specifically, the hydraulic damping mechanism 23 includes a piston 232 and a hydraulic cylinder 231, the piston 232 is slidably arranged in the hydraulic cylinder 231, and the piston 232 separates the hydraulic cylinder 231 into a first chamber and a second chamber, the first chamber and the second chamber are connected through an explosion-proof pipeline, and an adjustable throttle valve 24 is provided on the explosion-proof pipeline; one of the hydraulic cylinder 231 and the piston 232 is fixedly connected to the main beam 20, and the other is fixedly connected to the second anchor seat 22.

[0046] It should be understood that the greater the inclination angle of the steel frame, the more obvious its overturning tendency is. At this time, the system stiffness needs to be improved. The hydraulic damping mechanism 23 of the present invention can automatically adjust the damping size according to the relative position offset between the main beam 20 and the auxiliary beam 30. This adaptive adjustment mechanism enables the damping force to change with the change of external conditions, effectively improving the dynamic response performance of the structure; when the structure is subjected to external vibration or impact, the relative position between the main beam 20 and the auxiliary beam 30 may be offset. By increasing the damping, the hydraulic damping mechanism 23 can effectively absorb and dissipate the impact energy, reduce the vibration amplitude of the structure, and thus significantly enhance the seismic performance; because the increase in the damping force can effectively control the relative movement between the main beam 20 and the auxiliary beam 30, reduce the structural damage caused by excessive deformation or vibration, thereby extending the service life of the building.

[0047] See also Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.14 As shown, the adjustable throttle valve 24 is installed on the main beam 20, and a linkage mechanism is provided between the adjustable throttle valve 24 and the second anchor seat 22, and the linkage mechanism is configured to change the flow area of ​​the adjustable throttle valve 24 when the second anchor seat 22 is relatively displaced relative to the main beam 20 along the first direction. Specifically, the adjustable throttle valve 24 includes a valve core 242 and a valve housing 241, the valve core 242 is rotatably arranged in the valve housing 241, a blind hole 2421 is provided at the center of the valve core 242, a damping slit 2422 is provided on the side wall of the valve core 242, the damping slit 2422 is arranged in an arc shape along the circumference of the valve core 242, and the damping slit 2422 runs through the inner wall of the blind hole 2421 to the outer wall of the valve core 242; the inner wall of the valve housing 241 is provided with a blind hole 2421 that is connected to the damping slit 2422. The arc groove 2411 opposite to the slit 2422 can change the length of the communicating area between the damping slit 2422 and the arc groove 2411 when the valve core 242 rotates; the valve housing 241 is provided with a first interface 244 and a second interface 245, the first interface 244 is communicated with the blind hole 2421, and the second interface 245 is communicated with the arc groove 2411; the first interface 244 is communicated with the first chamber, and the second interface 245 is communicated with the second chamber. The linkage mechanism includes a swing arm 243 fixedly connected to the valve core 242, and a trigger rod 222 fixedly connected to the second anchor seat 22, the swing arm 243 is provided with a strip groove, the trigger rod 222 is inserted into the strip groove, and forms a sliding fit with the strip groove.

[0048] The following combination Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.14 The working principle of the adjustable throttle valve 24 is described in detail:

[0049] In static state, the piston 232 is in the middle position, and the adjustable throttle valve 24 is in Fig. 9 In the position shown, the damping slit 2422 is completely aligned with the arc groove 2411, the length of the flow area between the two is the largest, and the damping force is the smallest. When the frame tilts to the right, as mentioned above, the main beam 20 will move to the right relative to the auxiliary beam 30. At this time, the swing arm 243 swings to the left under the action of the trigger rod 222, so that the adjustable throttle valve 24 is switched to Fig.14 In the state shown, the length of the connecting area between the damping slit 2422 and the arc groove 2411 is reduced, and the damping is increased. Fig.14 The state shown is symmetrical, and the length of the connecting area between the damping slot 2422 and the arc groove 2411 will also be reduced.

[0050] See also Figure 2, Figure 4 , Figure 6 As shown, in an optional embodiment of the present invention, the hydraulic cylinder 231 is fixedly connected to the main beam 20, the piston 232 is fixedly connected to the second anchor seat 22, and the second anchor seat 22 constitutes a piston 232 rod that slidably cooperates with the hydraulic cylinder 231. The present invention integrates the piston 232 and the second anchor seat 22, thereby simplifying the equipment structure.

[0051] See also Figure 2 , Figure 4 , Figure 6 , Figure 7 As shown, in an optional embodiment of the present invention, a shift fork 221 is provided on the second anchor seat 22, and the shift fork 221 is provided with a U-shaped groove, and an annular groove 31 is provided on the sub-beam 30, and the U-shaped groove of the shift fork 221 is clamped in the annular groove 31. It should be understood that since the main beam 20 and the sub-beam 30 are two parallel sides of the parallel four-bar linkage, when the frame is tilted, the main beam 20 and the sub-beam 30 will not only produce relative displacement in the first direction, but also approach each other in the vertical direction. The present invention sets the second anchor seat 22 and the sub-beam 30 as a structure that is movable in the vertical direction to avoid rigid interference between the two in the vertical direction.

[0052] See also Figure 7 As shown, in an optional embodiment of the present invention, the main beam 20 is an I-beam. In some other embodiments, the main beam 20 may also be a T-beam or a square beam.

[0053] In summary, the present invention arranges the main beam, the auxiliary beam and the column into a parallel four-bar linkage, and arranges a prestressed anchor cable between the main beam and the auxiliary beam; the four-bar linkage can produce deformation during vibration to avoid rigid damage, and the prestressed anchor cable can keep the frame stable under static conditions, and can drive the frame to reset after the frame is deformed; since the prestressed anchor cable is arranged between the main beam and the auxiliary beam, as long as the two produce relative displacement, the prestressed anchor cable can be stretched to resist the lateral load, and is not restricted by the tilt direction of the frame, thereby fully utilizing the load capacity of the anchor cable; in addition, the present invention uses a hydraulic damper instead of a mechanical damper, the damping size is easier to control, and the mechanical wear of the damper is avoided, thereby improving the use efficiency. The hydraulic damping mechanism of the present invention can automatically adjust the damping size according to the relative position offset between the main beam and the auxiliary beam. This adaptive adjustment mechanism enables the damping force to change with the change of external conditions, effectively improving the dynamic response performance of the structure. When the structure is subjected to external vibration or impact, the relative position between the main beam and the auxiliary beam may shift. By increasing the damping, the hydraulic damping mechanism can effectively absorb and dissipate the impact energy, reduce the vibration amplitude of the structure, and thus significantly enhance the seismic performance. The increase in the damping force can effectively control the relative movement between the main beam and the auxiliary beam, reduce the structural damage caused by excessive deformation or vibration, and thus extend the service life of the building.

[0054] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0055] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A prestressed frame structure for a building, characterized in that: include: Columns (10), at least two of the columns (10) being arranged at intervals from each other; A main beam (20), wherein two ends of the main beam (20) are respectively hinged to the two upright columns (10); A secondary beam (30), wherein two ends of the secondary beam (30) are respectively hinged to the two upright columns (10), and the secondary beam (30) is arranged in parallel with the main beam (20), and the two upright columns (10), the main beam (20) and the secondary beam (30) form a parallel four-bar linkage; A prestressed anchor cable (40) is arranged between the main beam (20) and the auxiliary beam (30), and the prestressed anchor cable (40) is assembled to be able to maintain the main beam (20) and the auxiliary beam (30) in a preset relative position, wherein the preset relative position refers to the relative position between the main beam (20) and the auxiliary beam (30) when the two columns (10) are in a vertical state; A hydraulic damping mechanism (23) acting between the main beam (20) and the auxiliary beam (30), the hydraulic damping mechanism (23) being configured to create resistance to the relative movement between the main beam (20) and the auxiliary beam (30); The main beam (20) is provided with two first anchor seats (21) and two second anchor seats (22), the two first anchor seats (21) are respectively arranged near the two ends of the main beam (20) and are fixedly connected to the main beam (20), and the two second anchor seats (22) are respectively arranged near the two ends of the main beam (20) and are movably connected to the main beam (20) along a first direction, the first direction being the length direction of the main beam (20); the prestressed anchor cable (40) comprises two anchor heads (41) and a plurality of anchor cables (42), the two anchor heads (41) are respectively connected to the first anchor seats (41) at the two ends of the main beam (20) The main beam (20) and the auxiliary beam (30) are arranged in a sliding manner, wherein the first step portion (411) and the second anchor seat (22) are slidably matched, the anchor head (41) comprises a first step portion (411) and a second step portion (412), and each anchor cable (42) is tensioned between the two anchor heads (41); the second anchor seat (22) and the auxiliary beam (30) are fixedly arranged in relative position in the first direction, and the two are relatively movable in the vertical direction; when the main beam (20) and the auxiliary beam (30) are located at the preset relative position, the first step portion (411) abuts against the first anchor seat (21), and the second step portion (412) abuts against the second anchor seat (22).

2. The prestressed frame structure for a building according to claim 1, characterized in that: The hydraulic damping mechanism (23) is arranged between the main beam (20) and the second anchor seat (22), and the hydraulic damping mechanism (23) is configured such that when the offset of the relative position between the main beam (20) and the auxiliary beam (30) relative to the preset relative position increases, the damping of the hydraulic damping mechanism (23) can increase accordingly.

3. The prestressed frame structure for a building according to claim 2, characterized in that: The hydraulic damping mechanism (23) comprises a piston (232) and a hydraulic cylinder (231); the piston (232) is slidably disposed in the hydraulic cylinder (231); the piston (232) divides the hydraulic cylinder (231) into a first chamber and a second chamber; the first chamber and the second chamber are connected via an explosion-proof pipeline; an adjustable throttle valve (24) is provided on the explosion-proof pipeline; one of the hydraulic cylinder (231) and the piston (232) is fixedly connected to the main beam (20), and the other is fixedly connected to the second anchor seat (22).

4. The prestressed frame structure for a building according to claim 3, characterized in that: The adjustable throttle valve (24) is mounted on the main beam (20), and a linkage mechanism is provided between the adjustable throttle valve (24) and the second anchor seat (22), wherein the linkage mechanism is configured to change a flow area of ​​the adjustable throttle valve (24) when the second anchor seat (22) is relatively displaced relative to the main beam (20) along the first direction.

5. The prestressed frame structure for a building according to claim 4, characterized in that: The adjustable throttle valve (24) comprises a valve core (242) and a valve housing (241); the valve core (242) is rotatably arranged in the valve housing (241); a blind hole (2421) is provided at the center of the valve core (242); a damping slit (2422) is provided on the side wall of the valve core (242); the damping slit (2422) is arranged in an arc shape along the circumference of the valve core (242); the damping slit (2422) penetrates from the inner wall of the blind hole (2421) to the outer wall of the valve core (242); and a damping slit (2422) is provided on the inner wall of the valve housing (241) so as to be in contact with the damping slit. (2422) and an arc-shaped groove (2411) opposite to the blind hole (2422), when the valve core (242) rotates, the length of the communication area between the damping slit (2422) and the arc-shaped groove (2411) can be changed; the valve housing (241) is provided with a first interface (244) and a second interface (245), the first interface (244) is communicated with the blind hole (2421), and the second interface (245) is communicated with the arc-shaped groove (2411); the first interface (244) is communicated with the first chamber, and the second interface (245) is communicated with the second chamber.

6. The prestressed frame structure for a building according to claim 5, characterized in that: The linkage mechanism comprises a swing arm (243) fixedly connected to the valve core (242), and a trigger rod (222) fixedly connected to the second anchor seat (22); a strip groove is provided on the swing arm (243); the trigger rod (222) is inserted into the strip groove and forms a sliding fit with the strip groove.

7. The prestressed frame structure for a building according to claim 3, characterized in that: The hydraulic cylinder (231) is fixedly connected to the main beam (20), the piston (232) is fixedly connected to the second anchor seat (22), and the second anchor seat (22) constitutes a piston (232) rod that is slidably matched with the hydraulic cylinder (231).

8. The prestressed frame structure for a building according to claim 1, characterized in that: The second anchor seat (22) is provided with a shift fork (221), the shift fork (221) is provided with a U-shaped groove, the secondary beam (30) is provided with an annular groove (31), and the U-shaped groove of the shift fork (221) is clamped in the annular groove (31).

9. The prestressed frame structure for a building according to claim 1, characterized in that: The main beam (20) is an I-beam, a T-shaped steel beam or a square steel beam.

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