CN109944355B

CN109944355B - Rigidly connected assembled concrete shear wall and assembling method thereof

Info

Publication number: CN109944355B
Application number: CN201910357465.5A
Authority: CN
Inventors: 李红军; 刘辉; 张渝立
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2021-02-26
Anticipated expiration: 2039-04-29
Also published as: CN109944355A

Abstract

The invention discloses a rigidly connected assembled concrete shear wall and an assembling method thereof, wherein the rigidly connected assembled concrete shear wall comprises an upper shear wall and a lower shear wall, wherein a connecting cylinder is arranged in the upper shear wall and at the lower end of each upper vertical steel bar, and the lower end of the connecting cylinder is flush with the lower end of the upper shear wall; the connecting cylinder consists of an upper sleeve and a lower sleeve, and a clamping piece is detachably assembled in the lower sleeve; the clamping piece comprises a plurality of arc-shaped clamping blocks and springs connected with all the arc-shaped clamping blocks, and can radially contract under the extrusion of external force; the lower end of the clamping piece is provided with a top cylinder sleeved on the vertical steel bar at the lower part; the chucking spare can constantly move up under the lapse of a top section of thick bamboo, simultaneously, when the arc convex part of arc fixture block offsets with telescopic chucking hole lateral wall down, makes chucking spare shrink, holds lower part vertical reinforcing bar tightly. The rigidly connected fabricated concrete shear wall and the assembling method thereof have the advantages of firm connection, convenient assembling operation and no need of grouting.

Description

Rigidly connected assembled concrete shear wall and assembling method thereof

Technical Field

The invention relates to an assembly structure of an assembly type building, in particular to a rigidly connected assembly type concrete shear wall and an assembly method thereof.

Background

In fabricated buildings, there are a large number of nodal and patchwork connections, and the connection of steel reinforcement is certainly the most important key technology among them. At present, a plurality of steel bar connecting structures are applied, namely, a grouting sleeve is adopted for grouting sleeve connection, when a grouting sleeve is adopted for connecting an upper steel bar and a lower steel bar, the upper steel bar and the lower steel bar are inserted into a butt joint sleeve, then a grouting machine injects non-shrinkage high-strength grouting material formed by materials such as cement, an expanding agent, fine aggregate and high-performance admixture into the sleeve, and after the grouting material is hardened, the steel bars and the sleeve are firmly connected into a whole. When adopting above-mentioned mode to carry out the main muscle and connecting, need set up the preformed hole that is used for wearing to establish two main muscle in one of them shear wall, simultaneously, set up an handle hole in two main muscle junctions for the sleeve is established to the cover. Meanwhile, if the inner diameter of the sleeve is too small, the steel bars are not inserted well, the operation efficiency is affected, and the operation difficulty is increased. If the inner diameter of the sleeve is too large, the problem of insufficient connection strength exists when the two main ribs are completely connected through mortar.

In order to solve the problems, the sleeve is not used, and after an operation hole is directly arranged at the joint of the two main ribs, the two main ribs are fixed together in a welding mode and then sealed by mortar grouting. Although the strength of the mode is guaranteed to some extent, the reserved hole and the operation hole are required to be formed in the shear wall or the column, grouting is conducted after connection in the later period, the operation process is complicated, the operation space is small in welding, and the welding quality cannot be guaranteed. Based on this, the applicant intends to design an assembly type concrete shear wall which is firm in connection, convenient in assembly operation and free from grouting.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a rigidly connected fabricated concrete shear wall which is firm in connection, convenient to assemble and operate and free of grouting and an assembling method thereof.

In order to solve the technical problems, the invention adopts the following technical scheme:

a rigidly connected fabricated concrete shear wall comprises an upper shear wall and a lower shear wall, wherein a plurality of upper vertical steel bars are arranged in the upper shear wall, a plurality of lower vertical steel bars are arranged in the lower shear wall, the lower vertical steel bars of the lower shear wall correspond to the upper vertical steel bars of the upper shear wall one by one, and the upper ends of the lower vertical steel bars extend out of the connecting end of the lower shear wall; the connecting device is characterized in that a connecting cylinder is arranged in the upper shear wall and at the lower end of each upper vertical steel bar, the lower end of the connecting cylinder is flush with the lower end surface of the upper shear wall, and the connecting cylinder and the upper shear wall are integrally cast; the connecting cylinder consists of an upper sleeve and a lower sleeve, and the lower end of the upper vertical steel bar is arranged in the upper sleeve and is fixedly connected with the upper sleeve; the length of the lower sleeve is greater than or equal to the extending length of the lower vertical steel bar, and a clamping piece for clamping the lower vertical steel bar is detachably assembled in the lower sleeve; the clamping piece comprises at least three vertically arranged arc-shaped clamping blocks and at least two springs which are arranged at intervals up and down and are used for connecting all the arc-shaped clamping blocks, the springs are fixedly arranged in all the arc-shaped clamping blocks, all the arc-shaped clamping blocks are connected through the springs and then surround into a cylindrical body, an elastic clamping hole used for clamping the lower vertical steel bar is formed in the middle of the clamping piece, and the clamping piece can contract radially under the extrusion of external force; a plurality of arc-shaped outer convex parts which are convex outwards and have consistent convex thickness are arranged at intervals at the outer end of each arc-shaped fixture block, an arc-shaped inclined plane is arranged on the upper edge of each arc-shaped outer convex part, and the inclination angles of all the arc-shaped inclined planes are consistent; a plurality of assembly holes used for enabling the arc-shaped outer convex parts of the arc-shaped fixture blocks to move upwards and preliminarily fix the fixture and a plurality of clamping holes used for contracting the fixture and fixing the contracted fixture are arranged in the middle through hole of the lower sleeve at intervals, the diameter of each assembly hole is larger than that of each clamping hole, the diameter of each clamping hole is larger than that of the upper sleeve, each clamping hole is arranged at the upper end of each assembly hole, a limiting step surface is formed between each clamping hole at the top end and the upper sleeve, and a supporting step used for preliminarily fixing the fixture is formed by the lower end of each assembly hole and the connecting surface of the upper end of the clamping hole adjacent to the assembly hole; the longitudinal height of the inner wall of each assembly hole is greater than that of the arc-shaped outer convex part, and each assembly hole consists of a tapered hole matched with the arc-shaped inclined plane and a round hole with the longitudinal height greater than that of the arc-shaped outer convex part; the lower end of the arc-shaped fixture block is provided with a top cylinder which is sleeved on the vertical steel bar at the lower part and can push the clamping piece upwards under the action of external force, so that the upper end of the arc-shaped fixture block is tightly propped against the limiting step surface of the lower sleeve, the arc-shaped external convex part is tightly matched with the side wall of the clamping hole corresponding to the arc-shaped external convex part, and the distance from the lower end of the top cylinder to the limiting step surface is equal to the distance from the limiting step surface to the bottom end of the lower sleeve; the chucking spare can constantly move up under the lapse of a top section of thick bamboo, simultaneously, when the arc outer convex part of arc fixture block offseted with telescopic chucking hole lateral wall down, the spring was compressed, makes chucking spare shrink, offsets with spacing step face until chucking spare top, and the vertical reinforcing bar of lower part is held tightly in elasticity chucking hole. Like this, because chucking spare comprises a plurality of intervals setting and the arc fixture block that is in the same place by spring coupling, and the arc fixture block surrounds the back and is a barrel-shaped body that has a plurality of clearances, based on the existence of this clearance and spring, when external force extrusion arc fixture block, the diameter diminishes after the spring compression, the arc fixture block of being connected with it can radially move to central direction thereupon, make the clearance between the arc fixture block diminish, simultaneously, make the elasticity that its middle part formed press from both sides tight hole diameter diminish, and then will arrange the lower part vertical reinforcement clamp in chucking spare in tightly. When the clamping piece is not subjected to radial extrusion force, the diameter of the surrounded arc-shaped outer convex parts is slightly smaller than or equal to that of the assembly hole in the lower sleeve. When upwards promoting chucking spare, when assembling chucking spare, the outer convex part of arc contacts down the cover inner wall in the chucking spare after, when moving to the chucking hole position on, because the diameter in chucking hole is less than the diameter of pilot hole, consequently, the chucking hole inner wall can form a radial extrusion to the outer convex part of arc, makes the outer convex part of arc that contacts with the chucking hole receive the extrusion and draws close to the centre to hug closely with the chucking hole. Continue upwards to promote chucking spare, when the arc evagination in the chucking spare was arranged in the mounting hole at middle part, support bench in the mounting hole formed the support to chucking spare, made chucking spare tentatively fix in lower sleeve. And continuing to push the clamping piece upwards again until the arc-shaped outward protruding part at the upper end of the clamping piece is arranged in the clamping hole at the upper end of the lower sleeve, and then completing the assembly of the clamping piece. Of course, in order to reduce the resistance of the upward pushing of the arc-shaped convex part, the upper end of the arc-shaped convex part is inclined, so that the pushing process is more labor-saving and convenient. The top cylinder below the clamping piece is sleeved on the vertical steel bar at the lower part of the lower shear wall and is arranged at the connecting end of the lower shear wall, therefore, when the upper shear wall and the lower shear wall are assembled, the lower shear wall can form a support for the top cylinder, in the process of continuously transferring the upper shear wall, under the action of the dead weight of the upper shear wall, the lower cylinder continuously moves downwards, the top cylinder is under the support of the lower shear wall, an upper thrust is formed for the clamping piece, under the dual action of the dead weight of the upper shear wall and the top cylinder, the clamping piece can be rapidly assembled in a short time, and time and labor are saved. Meanwhile, the top end of the clamping piece is pushed to the position of the limiting step surface and then is positioned on the same plane with the lower sleeve, and the lower sleeve is also positioned on the same plane with the lower end surface of the upper shear wall after being assembled on the upper shear wall, so that the top sleeve can also ensure and detect whether the clamping piece is assembled in place.

Furthermore, a section of conical connecting hole for connecting the clamping hole and the through hole in the middle of the upper sleeve is also arranged on the clamping hole at the top. Like this, the toper connecting hole provides certain error space for lower part vertical reinforcement, even there is the error in the length of lower part vertical reinforcement, does not influence its assembly yet.

Furthermore, threads are arranged on the inner wall of an upper sleeve of the connecting cylinder, and the lower end of the upper vertical steel bar is fixedly connected with the upper sleeve through the threads on the inner wall of the upper sleeve. Like this, after the screw thread that sets up in the connecting cylinder mutually supported with convex line on the vertical reinforcing bar of upper portion, the joint strength and the tightness of sleeve and the vertical reinforcing bar of upper portion on the multiplicable.

Furthermore, a plurality of sections of arc-shaped clamping threads protruding radially towards the center of the elastic clamping hole are arranged on the inner side wall of each arc-shaped clamping block at intervals; the protruding length of the arc-shaped clamping lines is gradually reduced from the middle part to the two sides. Like this, arc chucking line can mutually support the back with convex line on the vertical reinforcing bar of lower part, and the joint strength and the tightness of sleeve and the vertical reinforcing bar of lower part under the multiplicable. Simultaneously, because arc chucking line middle part is more the both sides protrusion some, consequently, the middle part reinforcing bar holding capacity of arc fixture block is stronger, and when chucking spare was not assembled, the both sides of the arc fixture block of chucking spare slightly perk to the centre of a circle, and then increase the space that three arc fixture block constitutes, for the dowel time many vacate the space, reduce the dowel degree of difficulty.

Furthermore, the left side surface and the right side surface of each arc-shaped fixture block are inclined surfaces, and the inclination angle is 40-50 degrees. Like this, receive radial extrusion when the arc fixture block, the back is diminished in the clearance between the adjacent arc fixture block, can not cause the interference between the side.

Furthermore, an outward convex positioning step is arranged at the lower end of one of the arc-shaped outer convex parts of each arc-shaped fixture block or between two adjacent arc-shaped outer convex parts, the upper end surface of each positioning step is an inclined surface, and the inclination angle of each positioning step is consistent with that of each arc-shaped inclined surface. Like this, the diameter of location step is greater than the diameter of the urceolus that the outer convex part of arc formed, and then can further form the extrusion with the chucking hole, makes the chucking spare assembly more firm.

Furthermore, the hole wall of each clamping hole in the lower sleeve is in a step shape, and the arc-shaped outer convex part of each arc-shaped clamping block is meshed with the hole wall of the corresponding clamping hole. Like this, the outer convex part of arc and the mutual interlock of chucking hole pore wall, frictional force is bigger, and the assembly back steadiness is higher.

Furthermore, the lower end surface of each arc-shaped fixture block is an inclined surface, and the upper end surface of the top cylinder is a conical surface matched with the lower end surface of each arc-shaped fixture block. Therefore, the contact area between the lower end face of the arc-shaped clamping block and the top barrel can be increased, and meanwhile, when an earthquake occurs, the conical surface at the top end is matched with the inclined surface between the arc-shaped clamping blocks, so that the clamping piece can be clamped more tightly, and the steel bar can be prevented from being separated from the clamping piece.

A method for assembling a rigidly-connected fabricated concrete shear wall is characterized by comprising the following steps: s1, prefabricating the upper shear wall, the lower shear wall and the top barrel according to design requirements in a factory, and prefabricating a plurality of clamping pieces according to claim 6; s2, stacking the prefabricated upper shear wall, the prefabricated lower shear wall, the clamping piece and the top barrel at each assembly point of each floor; s3, inserting the clamping piece corresponding to each connecting cylinder to be initially fixed in each connecting cylinder of the upper shear wall; s4, vertically placing and fixing the lower shear wall, and sleeving a top cylinder on each lower vertical steel bar; s5, hoisting the upper shear wall above the lower shear wall by using a crane, then adjusting the position to align the upper shear wall with the lower shear wall, slowly placing the upper shear wall downwards, aligning each clamping piece in the upper shear wall with the lower vertical steel bars in the lower shear wall one by one, and sleeving the lower vertical steel bars in the elastic clamping holes of the clamping pieces; and S6, continuously putting the upper shear wall downwards, and continuously pushing each clamping piece upwards under the pushing of the top barrel and the self weight of the upper shear wall in the process of continuously putting the upper shear wall downwards until the clamping piece cannot be pushed, and completing assembly after the connecting end of the upper shear wall is attached to the connecting end of the lower shear wall. Like this, through prefabricating the connecting cylinder in last shear force wall for the shaping after the connecting cylinder pours with last shear force wall together, closely knit with the concrete laminating of last shear force wall, simultaneously, the vertical reinforcing bar in the upper portion of going up in the shear force wall cup joints with the connecting cylinder upper end mutually, further makes connecting cylinder and last shear force wall joint strength high. During the assembly, only need assembly chucking spare and a top section of thick bamboo can, the part and the step of assembly are all less, simultaneously, because prefabricated chucking spare can warp after receiving side pressure and jacking thrust, constantly shifts up and block in the connecting cylinder, and the corresponding shrink of its inner tube diameter is also held tightly lower part vertical reinforcement. The mode that the clamping piece is assembled in place under the self weight of the upper shear wall and the pushing of the top barrel is also very simple and convenient by adopting the downward-placing shear wall, and the operation is rapid. In addition, the lower shear wall and the upper shear wall are rigidly connected through the top barrel, the connecting barrel and the clamping piece, so that the connecting parts are completely attached without grouting and sealing again, and the grouting process is reduced.

Compared with the prior art, the rigidly connected fabricated concrete shear wall and the assembling method thereof have the following advantages:

1. the chucking spare is receiving external force extrusion back, can radially contract to hug closely with the lower sleeve inner wall of connecting cylinder after the shrink, hold lower part vertical reinforcement simultaneously tightly. The outer convex part of arc that the interval set up on every arc fixture block of chucking spare not only can with the pilot hole of lower sleeve between the cooperation, make chucking spare tentatively fix in lower sleeve, can also upwards enter into the chucking downthehole under the lapse of a top section of thick bamboo, with chucking hole tight fit. The clamping piece is rigidly connected with the connecting cylinder, so that the connection is very stable.

2. The top barrel that sets up under the chucking spare can be with chucking spare jack-up, makes its rapid Assembly target in place, and the chucking spare assembly back of targetting in place, and a top barrel lower extreme and a lower sleeve are in the coplanar, and a lower sleeve also is in the coplanar with the lower terminal surface of last shear force wall after assembling the last shear force wall, consequently, a top barrel can also ensure and detect whether the chucking spare assembles target in place.

3. The connecting cylinder, the upper vertical steel bar and the upper shear wall are integrally poured and formed, the lower end face of the connecting cylinder is flush with the lower end face of the upper shear wall, the clamping piece can be preliminarily fixed during assembly, then the clamping piece can be assembled in place through the dead weight generated when the upper shear wall is placed down and the pushing of the top cylinder, the assembling steps are few, the assembling process is simple, and the assembly is not sealed by grouting once again.

Drawings

FIG. 1 is a schematic view of a connection structure of vertical main reinforcements of a shear wall and a column in the embodiment;

FIG. 2 is a schematic structural view of an arc-shaped fixture block in an initial fixing state in the connecting cylinder in the embodiment;

FIG. 3 is a schematic structural view of the embodiment in which the arc-shaped fixture block is jacked up by the jacking cylinder and the lower vertical steel bar is fixed;

FIG. 4 is a schematic sectional view of a connector according to an embodiment;

FIG. 5 is a schematic diagram of an internal structure of an arc-shaped fixture block in the embodiment;

FIG. 6 is a schematic cross-sectional view of FIG. 2, taken along line 1-1;

FIG. 7 is a schematic cross-sectional view taken along line 3-3 of FIG. 3;

fig. 8 is an enlarged view of part a of fig. 3.

In the figure: the upper shear wall 1, the lower shear wall 2, the upper vertical steel bar 3, the lower vertical steel bar 4, the connecting cylinder 5, the upper sleeve 51, the lower sleeve 52, the threads 53, the assembling hole 54, the tapered hole 541, the round hole 542, the clamping hole 55, the limiting step surface 56, the supporting step 57, the tapered connecting hole 58, the arc-shaped fixture block 6, the arc-shaped outer convex part 61, the arc-shaped inclined plane 62, the positioning step 63, the transverse limiting through groove 64, the arc-shaped clamping grain 65, the spring 7, the elastic clamping hole 8 and the top cylinder 9.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example (b):

the rigidly-connected fabricated concrete shear wall provided by the embodiment comprises an upper shear wall 1 with a plurality of upper vertical steel bars 3 arranged therein and a lower shear wall 2 with a plurality of lower vertical steel bars 4 arranged therein, wherein the lower vertical steel bars 4 of the lower shear wall 2 correspond to the upper vertical steel bars 3 of the upper shear wall 1 one by one, and the upper ends of the lower vertical steel bars 4 extend out of the connecting end of the lower shear wall 2; a connecting cylinder is arranged in the upper shear wall 1 and at the lower end of each upper vertical steel bar 3, the lower end of the connecting cylinder is flush with the lower end surface of the upper shear wall, and the connecting cylinder and the upper shear wall are integrally cast and molded; the connecting cylinder 5 consists of an upper sleeve 51 and a lower sleeve 52, the inner wall of the upper sleeve 51 is provided with a thread 53, and the lower end of the upper vertical steel bar 3 is fixedly connected with the upper sleeve 51 through the thread 53 on the inner wall of the upper sleeve 51; the length of the lower sleeve 52 is greater than or equal to the extending length of the lower vertical steel bar 4, and a clamping piece for clamping the lower vertical steel bar 4 is detachably assembled in the lower sleeve 52; the longitudinal height of the retainer is less than the assembly height of the lower sleeve 52 with the retainer.

Specifically, the clamping piece comprises at least three vertically arranged arc-shaped clamping blocks 6 and at least two springs 7 which are arranged at intervals up and down and are used for connecting all the arc-shaped clamping blocks 6, the springs 7 are fixedly arranged in all the arc-shaped clamping blocks 6, all the arc-shaped clamping blocks 6 are connected through the springs 7 and then surround into a cylindrical body, an elastic clamping hole 8 used for clamping the lower vertical steel bar 4 is formed in the middle of the clamping piece, and the clamping piece can contract radially under the extrusion of external force; a plurality of arc-shaped outer convex parts 61 which are convex outwards and have consistent convex thickness are arranged at intervals at the outer end of each arc-shaped fixture block 6, an arc-shaped inclined surface 62 is arranged at the upper edge of each arc-shaped outer convex part 61, and the inclination angles of all the arc-shaped inclined surfaces 62 are consistent; a plurality of assembly holes 54 used for moving up the arc-shaped outer convex parts 61 of the arc-shaped fixture blocks 6 and primarily fixing the fixture and a plurality of clamping holes 55 used for contracting the fixture and fixing the contracted fixture are arranged in the middle through hole of the lower sleeve 52 at intervals, the diameter of each assembly hole 54 is larger than that of each clamping hole 55, the diameter of each clamping hole 55 is larger than that of the corresponding upper sleeve 51, each clamping hole 55 is positioned at the upper end of each assembly hole 54, a limiting step surface 56 is formed between each clamping hole 55 positioned at the top end and the corresponding upper sleeve 51, and a supporting step 57 used for primarily fixing the fixture is formed at the lower end of each assembly hole 54 and the connecting surface of the upper end of each clamping hole 55 adjacent to the lower end of each assembly hole 54; the longitudinal height of the inner wall of each fitting hole 54 is greater than the longitudinal height of the arc-shaped convex portion 61, and the fitting hole 54 is composed of a tapered hole 541 which is engaged with the arc-shaped inclined surface 62 and a circular hole 542 whose longitudinal height is greater than the longitudinal height of the arc-shaped convex portion 61.

Further, a tapered connecting hole 58 for connecting the clamping hole 55 with the central through hole of the upper sleeve 51 is provided on the clamping hole 55 at the top.

Further, the inner wall of the upper sleeve 51 of the connecting cylinder 5 is provided with a thread 53, and the lower end of the upper vertical steel bar 3 is fixedly connected with the upper sleeve 51 through the thread 53 on the inner wall of the upper sleeve 51.

Furthermore, a plurality of sections of arc-shaped clamping threads 65 protruding towards the center of the elastic clamping hole 8 in the radial direction are arranged on the inner side wall of each arc-shaped clamping block 6 at intervals; the protruding length of the arc-shaped clamping line 65 is gradually reduced from the middle part to two sides.

Furthermore, the left side surface and the right side surface of each arc-shaped fixture block 6 are inclined surfaces, and the inclination angle is 40-50 degrees.

Further, a positioning step 63 protruding outwards is arranged at the lower end of one of the arc-shaped convex parts 61 of each arc-shaped fixture block 6 or between two adjacent arc-shaped convex parts 61, the upper end surface of the positioning step 63 is an inclined surface, and the inclination angle of the positioning step is consistent with that of the arc-shaped inclined surface 62.

Further, the hole wall of each clamping hole 55 in the lower sleeve 52 is stepped, and the arc-shaped convex part 61 of each arc-shaped clamping block 6 is engaged with the corresponding hole wall of the clamping hole 55.

The assembling method of the rigidly connected assembled concrete shear wall comprises the following steps: s1, prefabricating the upper shear wall 1, the lower shear wall 2 and the top barrel 9 in a factory according to design requirements, and prefabricating a plurality of clamping pieces; s2, stacking the prefabricated upper shear wall 1, the prefabricated lower shear wall 2, the clamping piece and the top barrel 9 at each assembly point of each floor in a stacking manner; s3, inserting a clamping piece corresponding to each connecting cylinder 5 to be initially fixed in each connecting cylinder 5 of the upper shear wall 1; s4, vertically placing and fixing the lower shear wall 2, and sleeving a top cylinder 9 on each lower vertical steel bar 4; s5, hoisting the upper shear wall 1 above the lower shear wall 2 by using a crane, then adjusting the position to align the upper shear wall 1 with the lower shear wall 2, slowly lowering the upper shear wall 1 to align the clamping pieces in the upper shear wall with the lower vertical steel bars 4 in the lower shear wall 2 one by one, and sleeving the lower vertical steel bars 4 in the elastic clamping holes 8 of the clamping pieces; s6, continuing to lower the upper shear wall 1, and in the process of continuous lowering, continuously pushing each clamping piece upwards under the pushing of the top barrel 9 and the dead weight of the upper shear wall 1 until the clamping piece cannot be pushed, and completing the assembly after the connecting end of the upper shear wall 1 is attached to the connecting end of the lower shear wall 2.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.

Claims

1. A rigidly connected assembled concrete shear wall comprises an upper shear wall (1) and a lower shear wall (2), wherein a plurality of upper vertical steel bars (3) are arranged in the upper shear wall, a plurality of lower vertical steel bars (4) are arranged in the lower shear wall (2), the lower vertical steel bars (4) of the lower shear wall (2) correspond to the upper vertical steel bars (3) of the upper shear wall (1) one by one, and the upper ends of the lower vertical steel bars (4) extend out of the connecting end of the lower shear wall (2); the shear wall is characterized in that a connecting cylinder (5) is arranged in the upper shear wall (1) and at the lower end of each upper vertical steel bar (3), the lower end of the connecting cylinder (5) is flush with the lower end face of the upper shear wall (1), and the connecting cylinder (5) and the upper shear wall are integrally cast and formed; the connecting cylinder (5) consists of an upper sleeve (51) and a lower sleeve (52), and the lower end of the upper vertical steel bar (3) is arranged in the upper sleeve (51) and fixedly connected with the upper sleeve (51); the length of the lower sleeve (52) is greater than or equal to the extending length of the lower vertical steel bar (4), and a clamping piece for clamping the lower vertical steel bar (4) is detachably assembled in the lower sleeve (52); the clamping piece comprises at least three vertically arranged arc-shaped clamping blocks (6) and at least two springs (7) which are arranged at intervals up and down and are used for connecting all the arc-shaped clamping blocks (6), the springs (7) are fixedly arranged in all the arc-shaped clamping blocks (6), all the arc-shaped clamping blocks (6) are connected through the springs (7) and then surround into a cylindrical body, an elastic clamping hole (8) used for clamping the lower vertical steel bar (4) is formed in the middle of the clamping piece, and the clamping piece can contract radially under the extrusion of external force; a plurality of arc-shaped outer convex parts (61) which are convex outwards and have consistent convex thickness are arranged at intervals at the outer end of each arc-shaped fixture block (6), an arc-shaped inclined plane (62) is arranged on the upper edge of each arc-shaped outer convex part (61), and the inclination angles of all the arc-shaped inclined planes (62) are consistent; a plurality of assembling holes (54) used for enabling the arc-shaped convex parts (61) of the arc-shaped fixture block (6) to move upwards and preliminarily fix the fixture block and a plurality of clamping holes (55) used for contracting the fixture block and fixing the contracted fixture block are arranged in the middle through hole of the lower sleeve (52) at intervals, the diameter of each assembling hole (54) is larger than that of each clamping hole (55), the diameter of each clamping hole (55) is larger than that of the corresponding upper sleeve (51), each clamping hole (55) is positioned at the upper end of each assembling hole (54), a limiting step surface (56) is formed between each clamping hole (55) positioned at the top end and each upper sleeve (51), and a supporting step (57) used for preliminarily fixing the fixture block is formed by the lower end of each assembling hole (54) and the connecting surface of the upper end of the clamping hole (55) adjacent to the assembling hole; the longitudinal height of the inner wall of each assembly hole (54) is greater than that of the arc-shaped outer convex part (61), and each assembly hole (54) consists of a tapered hole (541) matched with the arc-shaped inclined surface (62) and a round hole (542) the longitudinal height of which is greater than that of the arc-shaped outer convex part (61); the lower end of the arc-shaped fixture block (6) is provided with a top cylinder (9) which is sleeved on the lower vertical steel bar (4) and can push the fixture block upwards under the action of external force, so that the upper end of the arc-shaped fixture block (6) is tightly pressed against the limiting step surface (56) of the lower sleeve (52), the arc-shaped convex part (61) is tightly matched with the side wall of the clamping hole (55) corresponding to the arc-shaped convex part, and the distance from the lower end of the top cylinder (9) to the limiting step surface (56) is equal to the distance from the limiting step surface (56) to the bottom end of the lower sleeve (52); the chucking spare can move on constantly under the lapse of a top section of thick bamboo (9), simultaneously, when arc convex part (61) of arc fixture block (6) and the chucking hole lateral wall of lower sleeve (52) offset, spring (7) are compressed, make chucking spare shrink, offset until chucking spare top and spacing step face (56), and elasticity chucking hole (8) are held tightly lower part vertical reinforcement (4).

2. The rigidly connected fabricated concrete shear wall of claim 1, wherein a tapered connecting hole (58) is further formed in the top clamping hole (55) for connecting the clamping hole (55) with the central through hole of the upper sleeve (51).

3. The rigidly connected fabricated concrete shear wall according to claim 1 or 2, wherein threads (53) are provided on the inner wall of the upper sleeve (51) of the connecting cylinder (5), and the lower ends of the upper vertical rebars (3) are fixedly connected with the upper sleeve (51) through the threads (53) on the inner wall of the upper sleeve (51).

4. The rigidly connected fabricated concrete shear wall according to claim 3, wherein a plurality of sections of arc-shaped clamping lines (65) protruding radially towards the center of the elastic clamping hole (8) are arranged on the inner side wall of each arc-shaped clamping block (6) at intervals; the protruding length of the arc-shaped clamping lines (65) is gradually reduced from the middle part to two sides.

5. The rigidly connected fabricated concrete shear wall according to claim 4, wherein the left side surface and the right side surface of each arc-shaped fixture block (6) are inclined planes, and the inclination angle is 40-50 degrees.

6. The rigidly connected fabricated concrete shear wall according to claim 5, wherein a positioning step (63) protruding outwards is arranged at the lower end of one of the arc-shaped protrusions (61) of each arc-shaped fixture block (6) or between two adjacent arc-shaped protrusions (61), and the upper end surface of the positioning step (63) is an inclined surface with an inclination angle consistent with that of the arc-shaped inclined surface (62).

7. The rigidly connected fabricated concrete shear wall of claim 4, 5 or 6, wherein the wall of each clamping hole (55) in the lower sleeve (52) is stepped, and the arc-shaped convex part (61) of each arc-shaped clamping block (6) is engaged with the wall of the corresponding clamping hole (55).

8. The rigidly connected fabricated concrete shear wall according to claim 7, wherein the lower end surface of each arc-shaped fixture block (6) is an inclined surface, and the upper end surface of the top cylinder (9) is a conical surface matched with the lower end surface of the arc-shaped fixture block (6).

9. A method for assembling a rigidly-connected fabricated concrete shear wall is characterized by comprising the following steps: s1, prefabricating the upper shear wall (1), the lower shear wall (2) and the top barrel (9) according to the design requirements in the factory, and prefabricating a plurality of clamping pieces according to the claim 6; s2, stacking the prefabricated upper shear wall (1), the prefabricated lower shear wall (2), the clamping piece and the top barrel (9) at each assembly point of each floor in a stacking manner; s3, inserting the clamping pieces corresponding to each connecting cylinder (5) so as to be preliminarily fixed in each connecting cylinder (5) of the upper shear wall (1); s4, vertically placing and fixing the lower shear wall (2), and sleeving a top cylinder (9) on each lower vertical steel bar (4); s5, hoisting the upper shear wall (1) above the lower shear wall (2) by using a crane, then adjusting the position to align the upper shear wall (1) and the lower shear wall (2), slowly placing the upper shear wall (1) downwards, aligning each clamping piece in the upper shear wall and the lower vertical steel bars (4) in the lower shear wall (2) one by one, and sleeving the lower vertical steel bars (4) in the elastic clamping holes (8) of the clamping pieces; s6, continuing to transfer the upper shear wall (1), and in the process of continuous transfer, continuously moving each clamping piece upwards under the pushing of the top barrel (9) and the self weight of the upper shear wall (1) until the clamping piece cannot be pushed, and completing assembly after the connecting end of the upper shear wall (1) is attached to the connecting end of the lower shear wall (2).