A semi-rigid metal energy dissipation device for shear wall root

Abstract

The application discloses a semi-rigid metal energy dissipation device for a shear wall root, which comprises an ellipsoidal base, a shear wall and a foundation. The ellipsoidal base is in a T-shaped structure, and a constraint steel groove is arranged at the bottom of the ellipsoidal base. The lower end of the ellipsoidal base is inserted into the constraint steel groove, the upper end of the ellipsoidal base is connected with the shear wall, the lower end of the constraint steel groove is fixed on the foundation, and a plurality of energy dissipation members are arranged between the foundation and the upper side of the ellipsoidal base. The device can avoid the formation of a plastic hinge at the bottom of the shear wall under the action of load.

Description

Technical Field

[0001] This invention belongs to the field of energy dissipation and vibration reduction technology, and relates to a semi-rigid metal energy dissipation device at the root of a shear wall. Background Technology

[0002] Shear walls are crucial structural components, through which the loads from the superstructure are transferred to the foundation, playing a decisive role in the structure's load-bearing capacity and stability. Since dampers in structural energy dissipation and vibration reduction technologies are typically prefabricated, this means that the energy dissipation devices are easy to install. Therefore, introducing load-bearing and energy-dissipating dampers into the base of reinforced concrete shear walls is an important means to achieve rapid assembly and excellent seismic performance.

[0003] Numerous studies have shown that under load, traditional reinforced concrete shear walls will form plastic hinges at the bottom, leading to severe damage and spalling of the concrete at the wall base, which is difficult to repair after an earthquake. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a semi-rigid metal energy dissipation device at the root of a shear wall, which can prevent the formation of a plastic hinge at the bottom of the shear wall under load.

[0005] To achieve the above objectives, the present invention discloses a semi-rigid metal energy dissipation device at the root of a shear wall, comprising an ellipsoidal base, a shear wall, and a foundation;

[0006] The ellipsoidal base has a T-shaped structure. A constraint steel channel is provided at the bottom of the ellipsoidal base. The lower end of the ellipsoidal base is inserted into the constraint steel channel. The upper end of the ellipsoidal base is connected to the shear wall. The lower end of the constraint steel channel is fixed to the foundation. Several energy-dissipating components are provided between the foundation and the upper side of the ellipsoidal base.

[0007] The lower end of the ellipsoidal base has a semi-elliptical cross-section.

[0008] The energy-consuming component includes an upper end plate, a lower end plate, and an energy-consuming steel plate. A filler plate is provided between adjacent energy-consuming steel plates. The upper end of the energy-consuming steel plate is fixed to the bottom of the upper end plate, and the lower end of the filler plate is fixed to the lower end plate. The lower end plate is fixed to the foundation, and the upper end plate is fixed to the bottom of the upper side of the ellipsoidal base. The energy-consuming steel plate and the filler plate are connected by high-strength bolts.

[0009] The lower end plate is connected to the foundation by a first anchor rod.

[0010] The upper plate is connected to the ellipsoidal base by a second anchor rod.

[0011] Each energy-consuming component is distributed on both sides of the constrained steel channel.

[0012] In the same energy-consuming component, the energy-consuming steel plates and filler plates are distributed in parallel.

[0013] Several steel channel stiffening plates are provided on both sides of the constrained steel channel, and the lower end of the steel channel stiffening plates is fixed to the foundation.

[0014] The ellipsoidal base is embedded with steel bars.

[0015] The ellipsoidal base is filled with concrete.

[0016] The present invention has the following beneficial effects:

[0017] In practical operation, the semi-rigid metal energy dissipation device at the base of the shear wall described in this invention features a constraint steel groove at the bottom of the ellipsoidal base, with the lower end of the ellipsoidal base inserted into the constraint steel groove. Several energy dissipation components are arranged between the foundation and the upper side of the ellipsoidal base. The ellipsoidal base and the energy dissipation components jointly bear the pressure and shear force, while the energy dissipation components bear the tensile force and bending moment. The force mechanism is clear, and the parameters are highly designable, thus preventing the formation of a plastic hinge at the bottom of the shear wall under load. Furthermore, the ellipsoidal base has a T-shaped structure, meaning it contacts the shear wall at a surface, avoiding stress concentration. Under seismic loading in all directions, most of the damage is concentrated on the energy dissipation components and the ellipsoidal base, achieving a "structural fuse" function.

[0018] Furthermore, the energy-dissipating steel plate will not become unstable and fail when subjected to pressure due to the double-sided constraint stiffening plates of the inner steel plate and the joint, thus giving the node a stable load-bearing and energy-dissipating capacity. Attached Figure Description

[0019] Figure 1 Structural diagram of the present invention;

[0020] Figure 2 This is a disassembled diagram of the present invention;

[0021] Figure 3 This is a structural diagram of the energy-consuming component in this invention.

[0022] Among them, 1 is the energy-consuming steel plate, 2 is the filling plate, 3 is the stiffening plate, 41 is the upper end plate, 42 is the lower end plate, 5 is the ellipsoidal base, 6 is the constraint steel channel, 7 is the steel channel stiffening plate, 8 is the high-strength bolt, 91 is the first anchor rod, and 92 is the second anchor rod. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion regarding the concepts disclosed in the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0024] The accompanying drawings show structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not drawn to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0025] refer to Figures 1 to 3 The semi-rigid metal energy dissipation device at the root of the shear wall described in this invention includes an ellipsoidal base 5, a shear wall, and a foundation;

[0026] The ellipsoidal base 5 has a T-shaped structure, and the lower end of the ellipsoidal base 5 has a semi-elliptical cross-section. A constraint steel channel 6 is provided at the bottom of the ellipsoidal base 5, wherein the lower end of the ellipsoidal base 5 is inserted into the constraint steel channel 6, the upper end of the ellipsoidal base 5 is connected to the shear wall, the lower end of the constraint steel channel 6 is fixed to the foundation, and several energy-dissipating components are provided between the foundation and the upper side of the ellipsoidal base 5.

[0027] In one embodiment of the present invention, the energy-consuming component includes an upper end plate 41, a lower end plate 42, and an energy-consuming steel plate 1. A filler plate 2 is provided between adjacent energy-consuming steel plates 1. The upper end of the energy-consuming steel plate 1 is fixed to the bottom of the upper end plate 41, and the lower end of the filler plate 2 is fixed to the lower end plate 42. The lower end plate 42 is fixed to the foundation, and the upper end plate 41 is fixed to the bottom of the upper side of the ellipsoidal base 5. The energy-consuming steel plate 1 and the filler plate 2 are connected by high-strength bolts 8.

[0028] In one embodiment of the present invention, the lower end plate 42 is connected to the foundation by a first anchor rod 91, and the upper end plate 41 is connected to the ellipsoidal base 5 by a second anchor rod 92.

[0029] In one embodiment of the present invention, each energy-consuming component is distributed on both sides of the constrained steel channel 6.

[0030] In one embodiment of the present invention, in the same energy-consuming component, each energy-consuming steel plate 1 and filler plate 2 are distributed in parallel.

[0031] In one embodiment of the present invention, several steel channel stiffening plates 7 are provided on both sides of the constrained steel channel 6, and the lower end of the steel channel stiffening plate 7 is fixed to the foundation.

[0032] In one embodiment of the present invention, the steel channel stiffening plate 7 has a right-angled triangular structure.

[0033] In one embodiment of the present invention, the energy-consuming steel plate 1 is provided with trapezoidal through holes and several sets of elongated through holes, wherein the elongated through holes are located below the trapezoidal through holes.

[0034] In one embodiment of the present invention, the ellipsoidal base 5 is reinforced with steel bars and the ellipsoidal base 5 is filled with concrete.

[0035] The installation process of this invention is as follows:

[0036] 1) Weld the filler plate 2 to the lower end plate 42, weld the energy-consuming steel plate 1 to the upper end plate 41, then weld the stiffening plate 3 to the energy-consuming steel plate 1 and the lower end plate 42, and then assemble the energy-consuming components.

[0037] 2) Insert reinforcing bars into the ellipsoidal base 5 and pour concrete. Then weld the upper end of the ellipsoidal base 5 to the shear wall and insert the lower end of the ellipsoidal base 5 into the constraint steel channel 6. Then weld the contact position between the ellipsoidal base 5 and the constraint steel channel 6, and then weld the steel channel stiffening plate 7.

[0038] 3) The lower end plate 42 is connected to the foundation by the first anchor rod 91, and the upper end plate 41 is connected to the ellipsoidal base 5 by the second anchor rod 92. At this point, the entire assembly is complete.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A semi-rigid metal energy dissipation device at the base of a shear wall, characterized in that, Includes ellipsoidal base (5), shear walls and foundation; The ellipsoidal base (5) is a T-shaped structure. A constraint steel channel (6) is provided at the bottom of the ellipsoidal base (5). The lower end of the ellipsoidal base (5) is inserted into the constraint steel channel (6). The upper end of the ellipsoidal base (5) is connected to the shear wall. The lower end of the constraint steel channel (6) is fixed to the foundation. Several energy-dissipating components are provided between the foundation and the upper side of the ellipsoidal base (5). The lower end of the ellipsoidal base (5) has a semi-elliptical cross-section; The energy-consuming component includes an upper end plate (41), a lower end plate (42), and an energy-consuming steel plate (1). A filler plate (2) is provided between adjacent energy-consuming steel plates (1). The upper end of the energy-consuming steel plate (1) is fixed to the bottom of the upper end plate (41), and the lower end of the filler plate (2) is fixed to the lower end plate (42). The lower end plate (42) is fixed to the foundation, and the upper end plate (41) is fixed to the bottom of the upper side of the ellipsoidal base (5). The energy-consuming steel plate (1) and the filler plate (2) are connected by high-strength bolts (8).

2. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, The lower end plate (42) is connected to the foundation by a first anchor rod (91).

3. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, The upper plate (41) is connected to the ellipsoidal base (5) by a second anchor rod (92).

4. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, Each energy-consuming component is distributed on both sides of the constrained steel channel (6).

5. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, In the same energy-consuming component, each energy-consuming steel plate (1) and filler plate (2) are distributed in parallel.

6. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, Several steel channel stiffening plates (7) are provided on both sides of the constrained steel channel (6), and the lower end of the steel channel stiffening plate (7) is fixed to the foundation.

7. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, The ellipsoidal base (5) is fitted with steel bars.

8. The semi-rigid metal energy dissipation device at the root of a shear wall according to claim 1, characterized in that, The ellipsoidal base (5) is filled with concrete.

Images