BOTTOM CORNER DAMPER WITH DISPLACEMENT AMPLIFICATION FUNCTION AND FABRICATED TYPE SHEAR WALL WITH ROCKING ENERGY DISSIPATION

Abstract

A bottom corner damper with a displacement amplification function and a fabricated type shear wall with rocking energy dissipation are provided. The fabricated type shear wall with rocking energy dissipation is composed of a precast shear wall, upper connecting plates, middle connecting plates, lower connecting plates, bent steel plates, bolts, upper support arms, lower support arms, connectors, lead screws, cylinder barrels, viscous fluids, and propellers. A fabricated type shear wall structure, where novel dampers with displacement amplification and steering functions are installed at weak parts of the bottom of the shear wall, the novel dampers are composed of bending energy dissipation dampers, displacement amplification and steering devices and viscous energy dissipation dampers, and the novel dampers have the functions of amplifying the displacement and converting force in a vertical direction of the structure into force in a horizontal direction for transmission.

Claims

1. A bottom corner damper with a displacement amplification function, wherein the bottom corner damper is fabricated with a precast shear wall with a rocking energy dissipation, and the bottom corner damper comprises upper connecting plates, middle connecting plates, lower connecting plates, bent steel plates, bolts, upper support arms, lower support arms, connectors, lead screws, cylinder barrels, viscous fluids, and propellers; wherein the upper connecting plates, the lower connecting plates and the cylinder barrels are directly connected to the precast shear wall, and each of the upper connecting plates, the bent steel plates, and the middle connecting plates are connected by welding to form bending energy dissipation dampers; when the precast shear wall is damaged by bending, the bending energy dissipation dampers play a main role; when the precast shear wall is damaged by shearing, viscous energy dissipation dampers dissipate a shearing force in a horizontal direction; during a bending and shearing damage, the bending energy dissipation dampers, the viscous energy dissipation dampers and displacement amplification and steering devices work together, the middle connecting plates, the lower support arms and the upper support arms are connected through the bolts, the upper support arms and the lower support arms are connected to the lead screws through the connectors to form the displacement amplification and steering devices, an acting force generated by an energy dissipation of the bending energy dissipation dampers is downwards transmitted through the middle connecting plates, the upper support arms connected to each of the middle connecting plates through the bolts and the lower support arms begin to stretch to two sides under the acting force, and the connectors are driven to move synchronously; the lead screws rotate at an accelerated rate under an action of the connectors, to amplify a displacement of an upper part, and convert the acting force in a vertical direction into a rotation in the horizontal direction; and the propellers are attached to end portions of the lead screws, the propellers extend into the cylinder barrels containing the viscous fluids to form the viscous energy dissipation dampers, and the lead screws drive the propellers to rotate in the viscous fluids to produce a viscous damping and dissipate a seismic energy.

2. The bottom corner damper according to claim 1, wherein the displacement amplification and steering devices are configured to convert a vertical displacement of an upper structure into an accelerated rotation in the horizontal direction.

3. The bottom corner damper according to claim 1, wherein an arm length of each of the upper support arms, an arm length of each of the lower support arms, and an angle between each of the upper support arms and each of the lower support arms in each of the displacement amplification and steering devices are configured to be adjusted on site according to actual engineering needs.

4. The bottom corner damper according to claim 1, wherein the upper support arms, the lower support arms, and the lead screws in the displacement amplification and steering devices are connected through the bolts and the connectors.

5. The bottom corner damper according to claim 1, wherein the bolts, the upper support arms, the lower support arms, and the connectors are all made of high-strength steel Q460.

6. The bottom corner damper according to claim 1, wherein each of the propellers is in a form of a two-blade structure or a three-blade structure, and a clearance of 1/10-⅕ of a diameter of each of the cylinder barrels is left between each of the propellers and a cylinder barrel corresponding to each of the propellers.

7. The bottom corner damper according to claim 1, wherein a total height of each of the bending energy dissipation dampers is ⅓-½ of a total height of each of the displacement amplification and steering devices.

8. The bottom corner damper according to claim 1, wherein a part of each of the lead screws entering each of the cylinder barrels is ¼-⅓ of a total length of each of the lead screws.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a three-dimensional effect diagram of a bottom corner damper with a displacement amplification function and a fabricated type shear wall with rocking energy dissipation according to the present invention.

[0016] FIG. 2 is a structural diagram of a bottom corner damper with a displacement amplification function and a steering function.

[0017] FIG. 3 is a structural diagram of a bending energy dissipation damper.

[0018] FIG. 4 is a structural diagram of a displacement amplification and steering device.

[0019] FIG. 5 is a structural diagram of a viscous energy dissipation damper.

[0020] In FIGS: 1—Precast shear wall, 2—Upper connecting plate, 3—Middle connecting plate, 4—Lower connecting plate, 5—Bent steel plate, 6—Bolt, 7—Upper support arm, 8—Lower support arm, 9—Connector, 10—Lead screw, 11—Cylinder barrel, 12—Viscous fluid, and 13—Propeller

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Embodiment 1:

[0022] The detailed description of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] As shown in FIG. 1 illustrating an embodiment of a bottom corner damper with a displacement amplification function and a fabricated type shear wall with rocking energy dissipation. The fabricated type shear wall with rocking energy dissipation mainly includes a precast shear wall (1), upper connecting plates (2), middle connecting plates (3), lower connecting plates (4), bent steel plates (5), bolts (6), upper support arms (7), lower support arms (8), connectors (9), lead screws (10), cylinder barrels (11), viscous fluids (12), and propellers (13).

[0024] Implementation steps are as follows:

[0025] 1) For a fabricated type shear wall structure, a wall height is 3000 mm, a wall width is 2000 mm, and a wall thickness is 200 mm. A space of 50 0mm×400 mm×200 mm is left on each of both sides of the bottom of the shear wall, that is, a total height of the bottom corner damper with a displacement amplification function is 500 mm, a total width is 400 mm, and a total thickness is 200 mm, referring to FIG. 1 and FIG. 2.

[0026] 2) For bending energy dissipation dampers, energy dissipation steel plates is made of Q235 steel, a size of each energy dissipation steel plate is 15 mm×80 mm×105 mm, and a clearance between the energy dissipation steel plates is 20 mm, referring to FIG. 3. Sizes of the upper, middle and lower connecting plates is 230 mm×22 mm×200 mm, the middle and lower connecting plates have bolt hole plates connected to other components, and a radius of screw holes is 5 mm.

[0027] 3) For displacement amplification and steering devices, upper and lower arm rods, the bolts and the connectors are made of Q460 steel, a radius of the bolts is 5 mm, a length of the arm rods is 180 mm, an initial included angle between every two arm rods is 90°, a length of the lead screws is 420 mm, a radius of the lead screws is 8 mm, the connectors are square externally and circular internally, an outer size of the connectors is 50 mm×20 mm×36 mm, a cylinder with a radius of 8 mm penetrates through the interior of each connector, and a screw hole with a depth of 10 mm and a radius of 8 mm is reserved in the middle of the length direction of each connector, referring to FIG. 4.

[0028] 4) For viscous dampers, a length of the cylinder barrels is 150 mm, a wall thickness is 10 mm, the viscous fluids are contained in the cylinder barrels, the propellers are distributed in a three-blade form, a thickness is 2 mm, ten blades are included, and the blades are spaced by 10 mm. A distance between each propeller and an inner wall of the corresponding cylinder barrel is 11 mm, and a distance of 15 mm-20 mm from the top and bottom of the cylinder barrel is reserved, referring to FIG. 5.

[0029] 5) Under the action of earthquakes, when the shear wall is mainly damaged by bending, the bending energy dissipation dampers play a main role; and when the shear wall is mainly damaged by shearing, the viscous energy dissipation dampers dissipate shearing force in the horizontal direction. During bending and shearing damage, the bending energy dissipation dampers, the viscous energy dissipation dampers and the displacement amplification and steering devices work together, the middle connecting plates, the lower support arms and the upper support arms are connected through the bolts, the upper support arms and the lower support arms are connected to the lead screws through the connectors to form the displacement amplification and steering devices, acting force generated by energy dissipation of the bending energy dissipation dampers is downwards transmitted through the middle connecting plates, the upper support arms connected to the middle connecting plates through the bolts and the lower support arms begin to stretch to both sides under the action of the force, and the connectors are driven to move synchronously. At this time, the lead screws rotate at an accelerated rate under the action of the connectors, amplify displacement of an upper part, and at the same time convert acting force in a vertical direction into rotation in the horizontal direction. The propellers are attached to end portions of the lead screws, the propellers extend into the cylinder barrels containing the viscous fluids to form the viscous energy dissipation dampers, and the lead screws drive the propellers to rotate in the viscous fluids, so as to produce viscous damping and dissipate seismic energy.

[0030] The above is a typical embodiment of the present invention, but the implementation of the present invention is not limited thereto.