CN114150913B - An adaptive frictional energy dissipation outrigger system for super high-rise building structures against multiple catastrophes - Google Patents

Abstract

The invention discloses an outrigger system for self-adaptive frictional energy dissipation of a super high-rise building structure against multiple catastrophes, comprising: a building core tube, peripheral giant columns, an outrigger truss, a supporting corbel and an adaptive frictional energy dissipation device; one end of the outrigger truss is fixedly supported on the building core tube, and the other end is connected to the corbel arranged on the peripheral giant column through an adaptive frictional energy dissipation device; the self-adaptive frictional energy dissipation device is provided with a pair of external supports, a pair of middle sliding discs, a convex slider, and four corresponding friction interfaces; oblong holes, and set pull bolts to provide the friction required normal stress for the self-adaptive friction energy dissipation device. The invention can self-adaptively adjust its own stiffness and energy dissipation capacity, and at the same time meet the performance requirements of super high-rise building structures under multiple disasters such as static average wind, pulsating wind/small earthquake, moderate earthquake, and large earthquake, and achieve the purpose of reducing the impact of multiple disasters.

Description

A self-adaptive frictional energy dissipation outrigger for super high-rise building structures against multiple catastrophes system

technical field

The invention belongs to the field of structural vibration control of construction engineering technology, and in particular relates to an adaptive frictional energy dissipation outrigger system of a super high-rise building structure resisting multiple catastrophes.

Background technique

The core tube-outrigger-column structure system is a structural form widely used in domestic and international super high-rise buildings. The core tube in the middle of the structure is connected with the giant columns on the periphery through outrigger trusses to form a lateral force-resistant system of the structure (referred to as the traditional outrigger system), which can significantly improve the lateral stiffness of the structure and effectively limit the deformation of the structure under wind load (especially the average wind). However, the traditional outrigger system only provides stiffness, lacks energy dissipation means, and has limited control effect on the structure under the action of dynamic catastrophes such as earthquakes and pulsating winds. For this reason, the energy dissipation outrigger system came into being. The energy dissipation outrigger system is based on the deformation characteristics of the system. A damper is installed at the connection between the giant column and the end of the outrigger truss, and the large vertical deformation concentrated between the two is used to give full play to the function of the damper to provide additional energy dissipation capacity for the structural system.

However, on the one hand, the energy-dissipating outrigger breaks the rigid connection between the giant column and the outrigger truss in the traditional outrigger, and replaces it with a damper, which to a certain extent loses the static stiffness of the structure, thereby reducing the effect of controlling the static deformation of the structure under the action of average wind; its utility. Therefore, in the current engineering practice of super high-rise building structures, it is urgent to take into account the static deformation and dynamic response of the structure, and provide effective measures for adaptive energy consumption according to the level of catastrophe.

In view of the above problems, the present invention combines the characteristics of the energy-dissipating outrigger system and proposes an adaptive friction energy-dissipating outrigger system for super high-rise building structures that can resist multiple catastrophes; the present invention introduces an adaptive friction energy-dissipating device between the end of the outrigger truss and the peripheral giant columns, which can effectively resist multiple catastrophes such as average wind, pulsating wind, small earthquakes, moderate earthquakes, and major earthquakes. The rigidly connected traditional outrigger provides additional static stiffness for the whole structure to reduce the static deformation caused by the average wind; when encountering pulsating wind or small earthquakes, the proposed adaptive frictional energy dissipation outrigger system produces a slight slip between the end of the outrigger and the giant column and provides small frictional energy consumption to consume the energy input to the structure by the fluctuating wind and small earthquakes; The system can provide greater frictional energy consumption to meet the energy consumption demand of major earthquakes, so as to achieve the purpose of resisting multiple disasters.

The information disclosed in the above background technology section is only intended to deepen the understanding of the general background technology of the present invention, and should not be considered as an acknowledgment or in any form to imply that the information constitutes the prior art known to those skilled in the art

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide super high-rise building structures with an adaptive frictional energy dissipation outrigger system that can take into account structural static deformation and dynamic response, and provide adaptive energy consumption according to catastrophic levels.

In order to achieve the above object, the present invention provides the following technical solutions:

The present invention provides an outrigger system for self-adaptive frictional energy dissipation of a super high-rise building structure against multiple catastrophes, comprising: a core tube, giant columns, outrigger trusses, self-adaptive frictional energy dissipation devices and supporting corbels; the feature is that: the core tube is fixed to one end of the outrigger truss, and the other end of the outrigger truss is connected to the supporting corbel fixedly supported on the giant column through the self-adaptive frictional energy dissipation device.

Further, the outrigger truss includes: an upper chord, a lower chord, a middle chord, a diagonal web, and a vertical web; the outrigger is rigidly connected to the core tube; the end of the middle chord of the outrigger is rigidly connected to the self-adaptive friction energy dissipation device.

Further, the giant column is rigidly connected to the support corbel; the support corbel is rigidly connected to the self-adaptive friction energy dissipation device; the support corbel should have sufficient rigidity and bearing capacity to ensure the stability and safety of force transmission.

Further, the self-adaptive frictional energy dissipation device includes: a first support, a second support, a first sliding plate, a second sliding plate, a convex slider, and a pull bolt; the first support is connected to the outrigger truss; the second support is connected to the supporting corbel.

Further, the concave curved surface of the lower part of the first support of the self-adaptive friction energy dissipation device is consistent with the curvature of the convex curved surface of the upper part of the first sliding plate; the concave curved surface of the upper part of the second support is consistent with the curvature of the convex curved surface of the lower part of the second sliding plate; the concave curved surface of the lower part of the first sliding plate is consistent with the curvature of the convex curved surface of the upper part of the sliding block;

Further, a first friction surface is set between the first support and the first sliding plate of the self-adaptive friction energy dissipation device; a second friction surface is set between the second support and the second sliding plate; a third friction surface is set between the first sliding plate and the upper surface of the convex slider; a fourth friction surface is set between the second sliding plate and the lower surface of the convex slider; the third friction surface has the same friction coefficient as the fourth friction surface, and is smaller than the friction coefficient of the second friction surface;

Further, the flange plates of the first support and the second support of the self-adaptive frictional energy dissipation device have oblong holes, and set the tension bolts at the corresponding positions of the oblong holes; the tension bolts include: nuts, screws, and washers; the tension bolts need to be pre-tightened according to the design requirements.

Further, the self-adaptive frictional energy dissipating device can generate self-adaptive frictional force and equivalent stiffness according to the size of the deformation, specifically: when subjected to a small force, the adaptive frictional energy dissipating device does not produce sliding deformation; as the force continues to increase, sliding first occurs between the convex slider and the first sliding plate and the second sliding plate, accompanied by a small frictional force; as the external force further increases, sliding occurs between the second support and the second sliding plate, accompanied by a larger frictional force; when the force increases, sliding occurs between the first support and the first sliding plate, accompanied by a huge of friction.

Further, the self-adaptive friction energy dissipation outrigger system can resist multiple catastrophes, specifically as follows: under the average wind effect of wind load, the self-adaptive friction energy dissipation device does not slip, at this time, the end of the outrigger truss is equivalent to a rigid connection with the giant column, providing additional static stiffness for the whole structure to resist the average wind effect; for the pulsating wind effect of wind load and small earthquakes, the self-adaptive friction energy dissipation device slides and provides a small friction force, and at this time there is a relative friction between the end of the outrigger truss and the giant column. Deformation, and consume the energy input to the structure as a whole through small frictional energy consumption; when encountering a moderate earthquake, the self-adaptive frictional energy dissipation device slides a lot and provides a relatively large frictional force, at this time, a relatively large deformation occurs between the end of the outrigger truss and the giant column, and consumes the energy input to the structure as a whole through a large frictional energy consumption; when encountering a large earthquake, the self-adaptive frictional energy dissipation device slides and provides greater friction, and at this time, relatively greater deformation occurs between the end of the outrigger truss and the giant column, and The energy input to the structure as a whole by a large earthquake is consumed through greater frictional energy consumption.

Compared with prior art, the present invention has following characteristics:

The present invention combines the characteristics of the energy-dissipating outrigger system, and the proposed self-adaptive frictional energy-dissipating outrigger system can take into account the static deformation and dynamic response of the structure, and provide adaptive energy consumption according to the catastrophe level, and can simultaneously meet the vibration reduction (earthquake) performance requirements of super high-rise building structures under multiple disasters such as static average wind, pulsating wind/small earthquake, moderate earthquake, and large earthquake, and achieve the purpose of reducing the impact of multiple disasters. In addition, the present invention can be integrated with the outrigger system of the super high-rise building structure, does not occupy extra space, and is easy to install and maintain.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can also be obtained according to these drawings without creative work.

Fig. 1 shows a schematic view of the vertical arrangement of the super high-rise building structure self-adaptive friction energy dissipation outrigger system of the present invention in the vertical arrangement of the building.

Fig. 2 is a schematic elevation view of a multi-catastrophe resistant super high-rise building structure self-adaptive friction energy dissipation outrigger system arranged at the joint between the end of the outrigger truss and the giant column.

Fig. 3 is an exploded schematic diagram of various components of the self-adaptive frictional energy dissipation device of the present invention.

Fig. 4a is a front view of the self-adaptive frictional energy dissipation device of the present invention.

Fig. 4b shows the left side view of the self-adaptive frictional energy dissipation device in the present invention.

Fig. 4c is a top view of the self-adaptive frictional energy dissipation device of the present invention.

Fig. 5 is a schematic diagram showing three deformation modes of the self-adaptive frictional energy dissipation device in the present invention.

Fig. 6 is a schematic diagram of the force-displacement curves of the three deformation modes of the self-adaptive frictional energy dissipation device in the present invention.

Explanation of reference signs

10 core tube, 20 giant column, 30 outrigger truss, 301 upper chord, 302 lower chord, 303 middle chord, 304 oblique web, 305 vertical web, 40 self-adaptive friction energy dissipation device, 401 first support, 402 second support, 403 first sliding plate, 404 second sliding plate, 405 convex slider, 413 first friction surface, 424 second friction surface, 435 third friction surface, 44 5 the fourth friction surface, 46 pull bolts, 461 nuts, 462 screw rods, 463 gaskets, 47 oblong holes, 50 supporting corbels.

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with the technology to understand and read, and are not used to limit the conditions for the implementation of the present invention, so they have no technical significance. At the same time, terms such as "top", "bottom", "upper", "lower", "one" and "two" quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation of the present invention. Changes or adjustments of their relative relationships, without substantial changes in technical content, should also be regarded as the scope of implementation of the present invention.

In view of the urgent need in the current engineering practice of super high-rise building structures to take into account the static deformation and dynamic response of the structure, and provide effective measures for adaptive energy consumption according to the catastrophe level, this invention combines the characteristics of the energy dissipation outrigger system to propose an adaptive friction energy dissipation outrigger system that can simultaneously meet the performance requirements of super high-rise building structure vibration reduction (earthquake) under multiple catastrophes such as static average wind, fluctuating wind/small earthquake, moderate earthquake, and large earthquake. Through adaptive friction energy dissipation, the purpose of reducing the impact of multiple disasters is achieved. The invention can be integrated with the outrigger system of the super high-rise building structure, does not occupy redundant space, and is easy to install and maintain.

The self-adaptive frictional energy dissipation outrigger system of the super high-rise building structure resisting multiple catastrophes provided by the present invention will be described in detail through specific embodiments below.

As shown in Figures 1 to 6, this embodiment provides an adaptive frictional energy dissipation outrigger system for super high-rise building structures against multiple catastrophes, including: a core tube 10, giant columns 20, outrigger trusses 30, adaptive frictional energy dissipation devices 40, and support corbels 50; 0 connected.

Further, the outrigger truss 30 includes: an upper chord 301, a lower chord 302, a middle chord 303, a diagonal web 304, and a vertical web 305; the outrigger 30 is rigidly connected to the core tube 10; the end of the middle chord 303 of the outrigger 30 is rigidly connected to the self-adaptive friction energy dissipation device 40.

Further, the giant column 20 is rigidly connected to the support corbel 50; the support corbel 50 is rigidly connected to the self-adaptive friction energy dissipation device 40; the support corbel 50 should have sufficient rigidity and bearing capacity to ensure the stability and safety of force transmission.

Further, the self-adaptive frictional energy dissipation device 40 includes: a first support 401, a second support 402, a first sliding plate 403, a second sliding plate 404, a convex slider 405, and a pull bolt 46; the first support 401 is connected to the outrigger truss 30; the second support 402 is connected to the supporting bracket 50; The second sliding plate 404 is covered, the first sliding plate 403 is supported by the first support 401 , and the second sliding plate 404 is supported by the second support 402 ; the first support 401 and the second support 402 are connected and fixed by pull bolts 46 .

Further, the concave curved surface at the bottom of the first support 401 of the self-adaptive friction energy dissipation device 40 is consistent with the curvature of the convex curved surface at the top of the first sliding plate 403; the concave curved surface at the top of the second support 402 is consistent with the curvature of the convex curved surface at the bottom of the second sliding plate 404; the concave curved surface at the bottom of the first sliding plate 403 is consistent with the curvature of the convex curved surface at the top of the sliding block 405; The curvature of the convex curved surface at the lower part of the block 405 is consistent.

Further, the first friction surface 413 is set between the first support 401 and the first sliding plate 403 of the self-adaptive friction energy dissipation device 40; the second friction surface 424 is set between the second support 402 and the second sliding plate 404; the third friction surface 435 is set between the first sliding plate 403 and the upper surface of the convex slider 405; the fourth friction surface 445 is set between the second sliding plate 404 and the lower surface of the convex slider 405; 5 have the same coefficient of friction, which is smaller than the coefficient of friction of the second friction surface 424; the coefficient of friction of the second friction surface 424 is smaller than that of the first friction surface 413.

Further, the flange plates of the first support 401 and the second support 402 of the self-adaptive frictional energy dissipation device 40 have oblong holes 47, and set the tension bolts 46 at the corresponding positions of the oblong holes 47; the tension bolts 46 include: nuts 461, screw rods 462, and washers 463; the tension bolts 46 need to be pre-tightened according to the design requirements.

Further, the self-adaptive friction energy dissipation device 40 can generate self-adaptive frictional force and equivalent stiffness according to the size of the deformation. Specifically, the self-adaptive frictional energy dissipation device 40 does not produce sliding deformation when subjected to a small force; as the force continues to increase, sliding first occurs between the convex slider 405 and the first sliding plate 403 and the second sliding plate 404 accompanied by a small frictional force; as the external force further increases, sliding occurs between the second support 402 and the second sliding plate 404 and is accompanied by a relatively large frictional force; When the force is increased, sliding occurs between the first support 401 and the first sliding disc 403 accompanied by huge frictional force.

Further, the self-adaptive frictional energy dissipation outrigger system can resist multiple catastrophes, specifically: when the average wind effect of wind load is applied, the self-adaptive frictional energy dissipation device 40 does not slip, at this time, the end of the outrigger truss 30 is equivalent to a rigid connection with the giant column 20, which provides additional static stiffness for the whole structure to resist the average wind effect; for the pulsating wind effect of wind load and small earthquakes, the adaptive frictional energy dissipation device 40 slides and provides a small friction force, at this time the outrigger truss 30 Relative deformation occurs between the end of the outrigger truss 30 and the giant column 20, and the energy input to the whole structure by pulsating wind and small earthquakes is consumed through small frictional energy consumption; when a moderate earthquake occurs, the adaptive frictional energy dissipation device 40 slides and provides greater frictional force, at this time, relatively large deformation occurs between the end of the outrigger 30 and the giant column 20, and the energy input to the structure as a whole is consumed by a large frictional energy consumption; when a large earthquake occurs, the adaptive frictional energy dissipation device 40 slides and provides greater frictional force. Relatively greater deformation occurs between the end of the outrigger truss 30 and the giant column 20 , and the energy input to the structure as a whole is consumed through greater frictional energy dissipation.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (3)

1. The utility model provides a resist self-adaptation friction energy dissipation arm stretching system of super high-rise building structure of multiple catastrophe which characterized in that: comprising the following steps: the self-adaptive friction energy dissipation device comprises a core tube (10), a giant column (20), an cantilever truss (30), a self-adaptive friction energy dissipation device (40) and a supporting bracket (50); the core tube (10) is fixedly connected with one end of the cantilever truss (30), and the other end of the cantilever truss (30) is connected with the supporting bracket (50) fixedly supported on the giant column (20) through the self-adaptive friction energy dissipation device (40); a first friction surface (413) is arranged between a first support (401) and a first sliding disc (403) of the self-adaptive friction energy dissipation device (40); a second friction surface (424) is arranged between the second support (402) and the second sliding disk (404); a third friction surface (435) is arranged between the first sliding disk (403) and the upper surface of the convex slider (405); a fourth friction surface (445) is arranged between the second sliding disk (404) and the lower surface of the convex sliding block (405); the third friction surface (435) has the same coefficient of friction as the fourth friction surface (445) and is less than the coefficient of friction of the second friction surface (424); the second friction surface (424) has a coefficient of friction that is less than the coefficient of friction of the first friction surface (413); a slotted hole (47) is formed in a flange plate of a first support (401) and a flange plate of a second support (402) of the self-adaptive friction energy dissipation device (40), and a split bolt (46) is arranged at a corresponding position of the slotted hole (47); the split bolt (46) is required to exert pretightening force according to design requirements; the self-adaptive friction energy dissipation device (40) generates self-adaptive friction force and equivalent rigidity according to the deformation size, and is specifically expressed as follows: the self-adaptive friction energy dissipation device (40) does not generate sliding deformation when receiving small acting force; as the force increases, the convex slider (405) slides with the first sliding disk (403) and the second sliding disk (404) with smaller friction force; as the external force increases, sliding is then generated between the second support (402) and the second sliding disk (404) with an increased friction force; when the force is increased again, sliding is generated between the first support (401) and the first sliding disc (403) and the friction force is increased; the adaptive friction energy dissipating device (40) comprises: the device comprises a first support (401), a second support (402), a first sliding disc (403), a second sliding disc (404), a convex sliding block (405) and a split bolt (46); the first support (401) is connected with the cantilever truss (30); the second support (402) is connected with the supporting bracket (50); the two ends of the convex sliding block (405) are of a convex structure, the two ends of the convex sliding block (405) are respectively covered by a first sliding disc (403) and a second sliding disc (404), the first sliding disc (403) is supported by a first support (401), and the second sliding disc (404) is supported by a second support (402); the first support (401) and the second support (402) are fixedly connected through a split bolt (46);

the curvature of the concave curved surface of the lower part of the first support (401) of the self-adaptive friction energy dissipation device (40) is consistent with that of the convex curved surface of the upper part of the first sliding disc (403); the curvature of the concave curved surface at the upper part of the second support (402) is consistent with that of the convex curved surface at the lower part of the second sliding disc (404); the curvature of the concave curved surface at the lower part of the first sliding disc (403) is consistent with that of the convex curved surface at the upper part of the sliding block (405); the curvature of the concave curved surface at the upper part of the second sliding disc (404) is consistent with that of the convex curved surface at the lower part of the sliding block (405);

the self-adaptive friction energy dissipation arm extension system can resist multiple catastrophes, and is specifically expressed as follows: when the average wind for wind load acts, the self-adaptive friction energy dissipation device (40) does not slide, and at the moment, the end part of the cantilever truss (30) is equivalent to rigid connection with the giant column (20), so that additional static rigidity is provided for the whole structure to resist the average wind; when the self-adaptive friction energy dissipation device (40) slides and provides smaller friction force under the action of pulsating wind and small vibration of wind load, the end part of the cantilever truss (30) and the giant column (20) generate relative deformation at the moment, and the energy input to the whole structure is consumed by the small friction energy consumption; when a middle earthquake occurs, the self-adaptive friction energy dissipation device (40) slides greatly and provides a larger friction force, and at the moment, the end part of the cantilever truss (30) and the giant column (20) deform relatively greatly, and the middle earthquake is consumed through the larger friction energy dissipation to input energy to the whole structure; when a major shock is encountered, the self-adaptive friction energy dissipation device (40) slides and provides larger friction force, and at the moment, relatively larger deformation is generated between the end part of the cantilever truss (30) and the giant column (20), and the energy input to the whole structure is consumed by the major shock through larger friction energy dissipation.

2. The ultra-high rise building structure adaptive friction energy dissipating boom system resistant to multiple catastrophes of claim 1, wherein: the boom truss (30) includes: an upper chord (301), a lower chord (302), a middle chord (303), a diagonal web member (304), and a vertical web member (305); the cantilever truss (30) is rigidly connected with the core tube (10); the end head of the middle chord member (303) of the cantilever truss (30) is rigidly connected with the self-adaptive friction energy dissipation device (40); the upper chord member (301) is connected with the lower chord member (302) through a middle chord member (303), a diagonal web member (304) and a vertical web member (305).

3. The ultra-high rise building structure adaptive friction energy dissipating boom system resistant to multiple catastrophes of claim 2, wherein: the giant column (20) is rigidly connected with the supporting bracket (50); the supporting bracket (50) is rigidly connected with the self-adaptive friction energy dissipation device (40); the rigidity and bearing capacity of the supporting bracket (50) can ensure the stability and safety of force transmission.