Function-recovering energy-dissipating reinforced concrete shear wall and construction method thereof

Abstract

A function-recovering energy-dissipating reinforced concrete shear wall comprising a reinforced concrete shear wall body, common steel bars distributed in vertical direction within the reinforced concrete shear wall body, common steel bars distributed in horizontal direction within the reinforced concrete shear wall body, high-strength reinforcing materials arranged on left and right sides of the shear wall, and four dampers arranged in an X-shaped cross mode between a front reinforcement fabric and a rear reinforcement fabric that are formed by common steel bars distributed in vertical direction and common steel bars distributed in horizontal direction; a cylindrical piston rod having a hinge hole is arranged at the end portion of each damper.

Claims

1. A function-recovering energy-dissipating reinforced concrete shear wall, comprising: a reinforced concrete shear wall body, common steel bars distributed in vertical direction within the reinforced concrete shear wall body, common steel bars distributed in horizontal direction within the reinforced concrete shear wall body, high-strength reinforcing materials arranged on left and right sides of the reinforced concrete shear wall body, and four dampers distributed in an X-shape between a front reinforcement fabric and a rear reinforcement fabric that are formed by the common steel bars distributed in vertical direction and the common steel bars distributed in horizontal direction, wherein a piston rod at a lower end of the damper located at upper left, a piston rod at a lower end of the damper located at upper right, a piston rod at an upper end of the damper located at lower left and a piston rod at an upper end of the damper located at lower right are each cylindrical having a hinge hole at an end portion, wherein a rhombic structure is formed by the end portion of the piston rod at the lower end of the damper located at the upper left, the end portion of the piston rod at the lower end of the damper located at the upper right, the end portion of the piston rod at the upper end of the damper located at the lower left, and the end portion of the piston rod at the upper end of the damper located at the lower right, wherein steel plate connecting rods are arranged on the four edges of the rhombic structure, and every two of the steel plates connecting rods adjacent to each other are connected with the end portion of one of the piston rods through a movable hinge, wherein each of the steel plate connecting rods is arranged within a rhombic connecting rod protective shell having grooves, and wherein circular guide holes are formed in four corners of the rhombic connecting rod protective shell, wherein an annular connecting sleeve is arranged above each of the circular guide holes, wherein an end portion of the annular connecting sleeve is provided with a fixing edge, and the annular connecting sleeve is fixed to a connecting flange of each damper through the fixing edge, wherein steel strands are arranged at an end portion of the piston rod at an upper end of the damper located at the upper left, an end portion of the piston rod at an upper end of the damper located at the upper right, an end portion of the piston rod at a lower end of the damper located at the lower left, and an end portion of the piston rod at a lower end of the damper located at the lower right, wherein each of the steel strands are anchored on the reinforced concrete shear wall through an anchor plate, wherein metal corrugated tubes are arranged on periphery of the steel strand connected with the piston rod at the upper end of the damper located at the upper left, periphery of the steel strand connected with the piston rod at the upper end of the damper located at the upper right, periphery of the steel strand connected with the piston rod at the lower end of the damper located at the lower left, and periphery of the steel strand connected with the piston rod at the lower end of the damper located at the lower right, wherein pistons are arranged between the piston rod at the upper end of the damper located at the upper left and the piston rod at the lower end of the damper located at the upper left, between the piston rod at the upper end of the damper located at the upper right and the piston rod at the lower end of the damper located at the lower right, between the piston rod at the upper end of the damper located at the lower left and the piston rod at the lower end of the damper located at the lower left, and between the piston rod at the upper end of the damper located at the lower right and the piston rod at the lower end of the damper located at the lower right, wherein a cylinder barrel is arranged outside each piston rod, and an annular space is left between the respective piston and the respective cylindrical barrel, wherein a end of the cylinder barrel is fixed to a connecting flange, and a circular cover plate is arranged at an opposite end of each cylinder barrel, wherein a sealing cavity is formed among the inner surface of each cylinder barrel, outer surfaces of each piston rod and each piston, each connecting flange and each circular cover plate, wherein the sealing cavity is filled with an energy-dissipating material.

2. The function-recovering energy-dissipating reinforced concrete shear wall of claim 1, wherein the reinforcing materials are steel strands or fiber reinforced composite bars.

3. The function-recovering energy-dissipating reinforced concrete shear wall of claim 1, wherein the rhombic structure composed of the steel plate connecting rods are capable of stretching and contracting within the protective shell.

4. The function-recovering energy-dissipating reinforced concrete shear wall of claim 1, wherein an anchor point of an anchor plate at the lower left is defined as A, an anchor point of an anchor plate at the upper left is defined as B, an anchor point of an anchor plate at the upper right is defined as C, and an anchor point of an anchor plate at the lower right is defined as D.

5. The function-recovering energy-dissipating reinforced concrete shear wall of claim 1, wherein the rhombic connecting rod protective shell, the cylinder barrels and the reinforced concrete shear wall body are poured together.

6. The function-recovering energy-dissipating reinforced concrete shear wall of claim 1, wherein the dampers are viscous dampers, viscoelastic dampers, magneto-rheological dampers or electro-rheological dampers.

7. A construction method of function-recovering energy-dissipating reinforced concrete shear wall, comprising the steps of: Step 1: preparing a front reinforcement fabric and a rear reinforcement fabric that are formed by high-strength reinforcing materials, wherein common steel bars distributed in vertical direction and common steel bars distributed in horizontal direction are connected in a colligation mode; Step 2: assembling dampers, wherein a piston and a piston rod of each damper are connected first; subsequently, installing a connecting flange at a lower end of a damper cylinder barrel, inserting the piston and piston rod into the damper cylinder barrel; installing a circular cover plate at an upper end of the damper cylinder barrel; Step 3: connecting the dampers and a rhombic connecting rod protective shell, placing the four dampers at four corners of the rhombic connecting rod protective shell, and putting the piston rod of each damper having a hinge hole into a circular guide hole of the rhombic connecting rod protective shell; subsequently, fixing the connecting flanges of the four dampers and connecting sleeves at the four corners of the rhombic connecting rod protective shell, and installing steel plate connecting rods in the rhombic connecting rod protective shell; finally, installing a cover plate of the rhombic connecting rod protective shell; Step 4: installing the dampers and the rhombic connecting rod protective shell, placing metal corrugated tubes to corresponding installation positions, fixing them on the reinforcement fabrics, and inserting steel strand into each metal corrugated tube; subsequently, placing the dampers to corresponding installation positions between front and rear reinforcement fabrics from top of the reinforcement fabrics, and connecting the steel strands with the piston rods; finally, installing a framework and a framework support outside the reinforcement fabrics, and fixing the dampers and the rhombic connecting rod protective shell to the framework support; Step 5: pouring concrete; subsequently, simultaneously stretch-drawing and anchoring the steel strands at four corners of a wall body after the poured concrete reaches a design strength.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) To clearly expound the technical solution of the present invention, the drawings and embodiments are hereinafter combined to illustrate the present invention. Obviously, the drawings are merely some embodiments of the present invention and those skilled in the art can associate themselves with other drawings without paying creative labor.

(2) FIG. 1 is a schematic diagram illustrating the structural assembly of the flexible energy-dissipating damping devices used in building engineering of the present invention;

(3) FIG. 2 is a vertical sectional view of FIG. 1, and

(4) FIG. 3 is a sectional view taken along line F-F in FIG. 2.

DETAILED DESCRIPTION OF THE INVENTION

(5) Drawings and detailed embodiments are combined hereinafter to elaborate the technical principles of the present invention.

(6) As shown in FIGS. 1-3, the function-recovering energy-dissipating reinforced concrete shear wall of the present invention comprises a reinforced concrete shear wall body 21, common steel bars 23 distributed in vertical direction within the reinforced concrete shear wall body 21, common steel bars 24 distributed in horizontal direction within the reinforced concrete shear wall body 21, high-strength reinforcing materials 22 arranged on left and right sides of the shear wall, and four dampers arranged in an X-shaped cross mode between a front reinforcement fabric and a rear reinforcement fabric that are formed by common steel bars 23 distributed in vertical direction and common steel bars 24 distributed in horizontal direction. A cylindrical piston rod 31 having a hinge hole is arranged at the end portion of each damper. The cylindrical piston rods 31 are connected through movable hinges 1 and rhombic steel plate connecting rods 2. Each rhombic steel plate connecting rod 2 is arranged within a groove 3 formed in a rhombic connecting rod protective shell 4. A connecting flange 34 of the damper is fixedly connected with the rhombic connecting rod protective shell 4 through circular guide holes formed in a cross shape in the rhombic connecting rod protective shell 4. The rhombic connecting rod protective shell 4, damper cylinder barrels 35 and the reinforced concrete shear wall body 21 are poured together. One end of a steel strand 5 is connected with a cylindrical piston lever 33 of the damper, and a metal corrugated tube 6 is arranged outside the steel strand 5 and the cylindrical piston lever 33. The other end of the steel strand 5 is anchored at the point B of the reinforced concrete shear wall through an anchoring device 7, and points A, C and D are also anchoring points of the steel strands.

(7) A construction method of the function-recovering energy-dissipating reinforced concrete shear wall of the present invention, comprising the steps of:

(8) Step 1: preparing a front reinforcement fabric and a rear reinforcement fabric that are formed by high-strength reinforcing materials distributed in vertical direction and common steel bars, wherein the common steel bars distributed in vertical direction and the common steel bars distributed in horizontal direction are connected in a colligation mode;

(9) Step 2: assembling the dampers, wherein the piston and the piston rod of each damper are connected first; subsequently, installing the connecting flange at the lower end of the damper cylinder barrel, inserting the pre-connected piston and piston rod into the damper cylinder barrel from the above, and ensuring that the cylindrical piston rod having a hinge hole can pass through the center hole of the connecting flange; finally, installing a circular cover plate at the upper end of the damper cylinder barrel;

(10) Step 3: connecting the dampers and the rhombic connecting rod protective shell, placing the four dampers at the four corners of the rhombic connecting rod protective shell, and putting the cylindrical piston rod having a hinge hole into a circular guide hole of the rhombic connecting rod protective shell; subsequently, fixing the connecting flanges of the four dampers and the connecting sleeves at the four corners of the rhombic connecting rod protective shell, and installing steel plate connecting rods in the rhombic connecting rod protective shell; finally, installing the cover plate of the rhombic connecting rod protective shell;

(11) Step 4: installing the dampers and the rhombic connecting rod protective shell, placing the metal corrugated tubes to corresponding installation positions, fixing them on the reinforcement fabrics, and inserting steel strand into each metal corrugated tube; subsequently, placing the pre-connected dampers to corresponding installation positions between the front and rear reinforcement fabrics from the top of the reinforcement fabrics, and connecting the steel strands with the piston rods of the dampers; finally, installing a framework and a framework support outside the reinforcement fabrics, and fixing the dampers and the rhombic connecting rod protective shell to the framework support;

(12) Step 5: pouring concrete; subsequently, simultaneously stretch-drawing and anchoring the four steel strands at the four corners of the wall body after the poured concrete reaches the design strength.

(13) The operating principle of the present invention is the following:

(14) Under the action of seismic loads, an interlayer relative displacement of the shear wall structure can be caused. The points A and B at the left and right ends of the upper part of the shear wall body are displaced relative to the points C and D at the lower part of the shear wall body. When the distance between the points A and C are lengthened (at the moment, the distance between the points B and D is shortened), for a prestressing force is imposed on steel strands 5, and the points A and C are connected to the points B and D through a flexible system composed of steel strands 5, damper pistons 32, cylindrical piston rods 31 having a hinge hole at the end portion, movable hinges 1 and steel plate connecting rods, the damper pistons 32 of the dampers a and c are far from each other under the action of the tensile force of the steel strands, and are displaced relative to the cylinder barrels 35 of the dampers a and c. Simultaneously, the lower left and upper right ends of the rhombic steel plate connecting rod 2 are lengthened, and the upper left and lower right ends of the rhombic steel plate connecting rod 2 are shortened. The damper pistons 32 of the dampers b and d approach each other under the action of the tensile force of the rhombic steel plate connecting rod 2, and are displaced relative to the cylinder barrels of the dampers b and d. When there's relative displacement between the pistons and cylinder barrels of the dampers, the shear wall body functions to resist the seismic loads. Thus, the seismic energy introduced to the building structure can be effectively dissipated, the dynamic response of the structure under the action of seismic loads can be significantly weakened, and the seismic performance of the building structure can be greatly enhanced. It's the same when the distance between the points B and D are lengthened (at the moment, the distance between the points A and C are shortened).

(15) Further, for the high-strength reinforcing materials 22 arranged at the left and right sides of the reinforced concrete shear wall body possess a high tensile strength and a low elastic modulus, the structure can be always kept in an elastic working state. Thus, once the earthquake is over, the high-strength reinforcing materials can quickly pull the reinforced concrete shear wall body back to its original position. At the moment, the residual deformation is small, enabling the structure to quickly recover its function.

(16) The description of above embodiments allows those skilled in the art to realize or use the present invention. Without departing from the spirit and essence of the present invention, those skilled in the art can combine, change or modify correspondingly according to the present invention. Therefore, the protective range of the present invention should not be limited to the embodiments above but conform to the widest protective range which is consistent with the principles and innovative characteristics of the present invention. Although some special terms are used in the description of the present invention, the scope of the invention should not necessarily be limited by this description. The scope of the present invention is defined by the claims.