CN204252270U - Combined type energy-dissipating and shock-absorbing semi-girder rise of a truss Rotating fields system - Google Patents

Abstract

The utility model relates to a high-rise structure system of a combined energy-dissipating and shock-absorbing outrigger truss. An outrigger truss with vertically arranged viscous dampers and an outrigger truss with anti-buckling supports, the outrigger truss with vertically arranged viscous dampers is composed of viscous dampers, horizontal chord members, straight webs and diagonal webs Composition; the outrigger truss of the anti-buckling support is composed of a buckling-resistant support BRB, the second outrigger truss is composed of a horizontal chord member, a straight web bar and a buckling-resistant support BRB, and the connection between the giant steel reinforced concrete column and the core tube Outrigger trusses with viscous dampers arranged vertically are arranged at the top, followed by outrigger trusses with anti-buckling supports, and then the outrigger trusses with viscous dampers arranged vertically or outriggers with anti-buckling supports are arranged at the bottom according to the situation . In the utility model, under the action of wind and/or earthquake load, the two trusses work together to ensure the horizontal stiffness of the structure while consuming energy and absorbing shocks, so that the deformation of the structure meets the requirements of relevant regulations.

Description

Combined high-rise structure system of energy-dissipating and shock-absorbing outrigger truss

technical field

The utility model relates to a high-rise structure system of an outrigger truss for energy dissipation and shock absorption, and belongs to the technical field of anti-seismic and energy dissipation and shock absorption of engineering structures.

Background technique

In the design of super high-rise buildings, in order to reduce the dynamic response of the structure under the action of wind load and earthquake load and meet the requirements of wind resistance comfort, outrigger trusses are usually arranged between the giant columns and the core tube, and the viscous The damper, the giant column and the outrigger truss are disconnected, and the viscous damper uses the stagger between the giant column and the outrigger truss to play the role of shock absorption and energy consumption. However, since the giant column and the outrigger truss are disconnected, the overall rigidity of the structure will be greatly weakened, and the action of dynamic load will increase the deformation of the structure, even exceeding the specified limit. Therefore, it is of great significance to find a solution that can ensure the effect of shock absorption and energy dissipation without excessively reducing the structural rigidity. Considering that BRB is used as the diagonal support of the outrigger truss, there is no tension-compression instability problem of ordinary steel support, and the support section and stiffness index are easy to control, thus forming a "stiffness strengthening layer", which can effectively reduce the structural stiffness and the sudden change of internal force The problem makes it present a ductile yielding mechanism under rare earthquakes. The outrigger truss with BRB is rigidly connected to the giant column and the core tube as a whole, which can strengthen the structural rigidity and reduce shock and energy consumption. Combining it with the outrigger truss with vertically arranged viscous dampers can not only exert the high-efficiency energy dissipation effect of viscous dampers, but also ensure the horizontal stiffness of the structure. The deformation is controlled within a reasonable range.

Utility model content

The purpose of this utility model is to provide a combined high-rise structure system of energy-dissipating and shock-absorbing outrigger trusses. The utility model combines two different types of outrigger trusses (outrigger trusses with viscous dampers arranged vertically and BRB's outrigger truss), while ensuring shock absorption and energy dissipation, it does not reduce the rigidity of the structure too much, so that its deformation is within a controllable range. The outrigger truss with viscous dampers arranged vertically, through the arrangement of viscous dampers vertically, the connection between the outrigger truss and the giant column is properly disconnected to form a moderate rigidity and high energy dissipation capacity. The outrigger truss super high-rise structure system makes the outrigger truss move relative to the giant column under the action of wind vibration and/or earthquake, which causes the viscous fluid in the viscous damper to flow under the pressure difference, thereby Generate damping force and dissipate the vibration energy input to the structure from the outside; arrange the outrigger truss of BRB, and use the diagonal rod as the outrigger truss of BRB, which is rigidly connected with the core tube and giant column, and the BRB is provided to the core unit through the buckling restraint unit Sufficient constraints make the core unit yield but not buckle under compression. In the case of large deformation, the hysteresis curve of BRB is full, and it can yield first to absorb seismic energy under rare earthquakes, and the seismic performance is good. The scope of application of the utility model is high-rise structures whose fortification intensity is 6 degrees or above. The utility model has a clear anti-seismic concept, a simple structure, convenient construction, and convenient equipment maintenance, and can realize multiple fortification lines of high-rise structures, and has good economic efficiency and feasibility for post-earthquake repairs.

The high-rise structural system of the combined energy-dissipating and shock-absorbing outrigger truss proposed by the utility model includes a giant steel-reinforced concrete column 1, a core tube 2, an outrigger truss with viscous dampers arranged vertically, and an outrigger truss with anti-buckling support. in:

The outrigger truss with viscous dampers arranged vertically includes a viscous damper 6 and a first outrigger truss, and the first outrigger truss is composed of a horizontal chord member 3, a straight web bar 4 and a diagonal web bar 5 , several straight web bars 4 and several horizontal chord members 3 are connected to form a frame structure, the two sides of the frame structure are connected by diagonal web bars 5, the frame structure is fixed on the wall of the core tube 2, and the giant steel-reinforced concrete column 1 The connected horizontal chord member 3 located at the upper or lower part of the frame structure is connected with the viscous damper 6, correspondingly, the horizontal chord member 3 located at the lower or upper part of the frame structure is mechanically hinged with the giant steel reinforced concrete column 1; the viscous damper 6 is fixed on the giant steel-reinforced concrete column 1 through the corbel;

The outrigger truss of the anti-buckling support includes the anti-buckling support BRB7 and the second outrigger truss. Rods 4 and several horizontal chord members 3 are connected to form a frame structure. The two sides of the frame structure are connected by buckling-resistant supports BRB7. The frame structure is rigidly fixed on the wall of the core tube 2. The horizontal chords located at the upper and lower Part 3 is rigidly connected with giant steel-reinforced concrete column 1;

The giant steel-reinforced concrete column 1 and the core tube 2 are vertically arranged, and the uppermost part of the joint between the giant steel-reinforced concrete column 1 and the core tube 2 is provided with an outrigger truss with vertically arranged viscous dampers, and the vertically arranged viscous The lower part of the outrigger truss of the damper is arranged with the outrigger truss of the anti-buckling support, and then the outrigger truss of the vertically arranged viscous damper or the outrigger truss of the anti-buckling support is arranged below according to the situation.

In the utility model, the material of the anti-buckling support BRB7 is steel with a low yield point, and requires good ductility, and the elongation rate should not be less than 20%, and the impact toughness at the working temperature should be qualified.

In the utility model, the viscous damper is a vertically arranged velocity type damper, and the working principle is: using the vertical displacement between the giant steel-reinforced concrete column and the outrigger truss to make the viscous fluid pass through the damping channel , causing a damping force, and then achieving the purpose of dissipating energy. The buckling-resistant bracing BRB used in the outrigger truss of the buckling-resistant bracing works on the principle that the core unit is provided with sufficient restraint by the buckling restraint unit so that the core unit yields but does not buckle when it is under compression.

Compared with the traditional outrigger truss super high-rise structure system, the utility model has the following advantages:

1) Combining the advantages of the viscous damper and BRB, while ensuring the anti-seismic energy dissipation effect, it also ensures the overall stiffness of the structure and makes the structural deformation controllable.

2) Under the action of wind vibration and/or earthquake, no matter it is a small earthquake, a moderate earthquake or a large earthquake, it can have a very good vibration control effect.

3) BRB strength and stiffness indicators are easy to control, and the hysteretic performance is stable under large deformation. The viscous damper has low cost and is easy to apply and popularize in engineering.

Description of drawings

Fig. 1 is the front elevation view of the outrigger truss with viscous dampers vertically arranged in the utility model.

Fig. 2 is a front elevation view of the outrigger truss of the utility model with anti-buckling support.

Fig. 3 is the overall schematic diagram of the placement of the utility model in a super high-rise.

Numbers in the figure: 1 is a giant concrete column, 2 is a core tube, 3 is a horizontal chord member, 4 is a straight web member, 5 is a diagonal member, 6 is a viscous damper, 7 is a buckling-resistant brace BRB, and 8 is The outrigger truss with viscous dampers arranged vertically, 9 is the outrigger truss supported by anti-buckling.

Detailed ways

The utility model is further described below by implementing examples and accompanying drawings.

Embodiment 1: The high-rise structural system of the combined energy-dissipating and shock-absorbing outrigger truss includes two substructures, that is, the outrigger truss with viscous dampers arranged vertically and the outrigger truss with BRB arranged vertically.

As shown in Fig. 1, the outrigger truss with viscous dampers arranged vertically includes outrigger truss, giant steel reinforced concrete column 1, core tube 2 and viscous damper 6, and the connection between giant steel reinforced concrete column 1 and core tube 2 The first outrigger truss is connected with the viscous damper 6. The first outrigger truss is composed of horizontal chord members 3, straight web members 4 and oblique web members 5, several straight web members 4 and several horizontal The chord members 3 are connected to form a frame structure, the two sides of the frame structure are connected by diagonal rods 5, the frame structure is fixed on the wall of the core tube 2, and the horizontal chords connected with the giant steel-reinforced concrete column 1 are located at the upper or lower part of the frame structure. The rod member 3 is connected with the viscous damper 6, correspondingly, the horizontal chord member 3 located at the lower or upper part of the frame structure is mechanically hinged with the giant steel-reinforced concrete column 1; the viscous damper 6 is fixed to the giant steel-reinforced concrete column through the corbel 1 on. The outrigger truss with BRB arrangement includes BRB7, the second outrigger truss, giant steel-reinforced concrete column 1 and core tube 2, which is different from the outrigger truss with viscous dampers vertically arranged in Fig. 1, and the outrigger truss described in Fig. 2 The second outrigger truss is rigidly connected to the giant concrete column 1 and the core tube 2, and the second outrigger truss is composed of a horizontal chord member 3, a straight web member 4 and a buckling-resistant support BRB7.

The utility model is a high-rise structural system of combined energy-dissipating and shock-absorbing outrigger trusses. The outrigger trusses with viscous dampers arranged vertically are placed at the uppermost position, and then the outrigger trusses supported by buckling The position of the outrigger truss should be set on the lower side of the outrigger truss of the damper. For example, in Figure 3, there are four outrigger trusses from top to bottom. From top to bottom, the outrigger truss 8 with viscous dampers arranged vertically, the outrigger truss 9 with anti-buckling supports, and then the outrigger truss 8 with viscous dampers arranged vertically and the anti-buckling supports are arranged below according to the situation. outrigger truss9. The outrigger truss 8 with viscous dampers arranged vertically includes a giant concrete column 1 , a core tube 2 , horizontal chord members 3 of the outrigger truss, straight webs 4 , inclined webs 5 and viscous dampers 6 . The giant concrete column 1 and the core tube 2 are connected through the first outrigger truss and the viscous damper 6. Since the viscous damper 6 cannot enter the plastic yield before the connector under repeated loads, the utility model requires viscous damping The connecting parts of the device 6 have high fatigue resistance, so as to ensure that the connecting parts will not be damaged before the viscous damper. The main components of the outrigger truss 9 with buckling-resistant support are the same as those of the outrigger truss 8 with vertically arranged viscous dampers. The material requirements of buckling-resistant bracing BRB meet: the material used is steel with a low yield point, which is required to have good ductility, and the elongation rate should not be less than 20%. At the same time, there should be a qualified guarantee of impact toughness at working temperature.

Notes: 1) Node A in Figure 1 is disconnected from the giant concrete column 2; node B is a mechanical hinge, which can rotate moderately, but has no relative linear displacement.

2) In Figure 2, all nodes are rigidly connected as shown in C, and the diagonal members use BRB.

Claims (2)

1. Combined high-rise structural system of energy-dissipating and shock-absorbing outrigger trusses, including giant steel-reinforced concrete columns (1), core tubes (2), outrigger trusses with viscous dampers arranged vertically, and outrigger trusses with anti-buckling supports , characterized by: The outrigger truss with viscous dampers arranged vertically includes a viscous damper (6) and a first outrigger truss, and the first outrigger truss is composed of a horizontal chord member (3), a straight web member (4) Composed of diagonal rods (5), several straight web rods (4) and several horizontal chord members (3) are connected to form a frame structure, the two sides of the frame structure are connected by diagonal rods (5), and the frame structure is fixed on On the tube wall of the core tube (2), the horizontal chord member (3) connected to the giant steel reinforced concrete column (1) and located at the upper or lower part of the frame structure is connected to the viscous damper (6), and correspondingly, located at the frame structure The lower or upper horizontal chord member (3) is mechanically hinged to the giant steel-reinforced concrete column (1); the viscous damper (6) is fixed on the giant steel-reinforced concrete column (1) through a corbel; The outrigger truss of the anti-buckling bracing includes a buckling-resistant bracing BRB (7) and a second outrigger truss, and the second outrigger truss is composed of a horizontal chord member (2), a straight web bar (4) and a buckling-resistant bracing Composed of BRB (7), several straight web members (4) and several horizontal chord members (3) are connected to form a frame structure. On the tube wall of the tube (2), the horizontal chord members (3) located at the upper and lower parts of the frame structure are rigidly connected with the giant steel reinforced concrete column (1); The giant steel-reinforced concrete column (1) and the core tube (2) are vertically arranged, and the uppermost part of the connection between the giant steel-reinforced concrete column (1) and the core tube (2) is provided with an extension with a vertically arranged viscous damper. Outrigger trusses, outrigger trusses with viscous dampers arranged vertically, outrigger trusses with anti-buckling supports at the lower part, and then outrigger trusses with viscous dampers arranged vertically or outriggers with anti-buckling supports according to the situation. 2. The high-rise structural system of combined energy-dissipating and shock-absorbing outrigger trusses according to claim 1, characterized in that: the buckling-resistant bracing BRB (7) is made of steel with a low yield point and requires good ductility, and the elongation should not Less than 20%, and there should be a guarantee of qualified impact toughness at working temperature.