Fabricated ductility damping wall and construction method thereof

Abstract

The application discloses an assembled ductility shock absorption wall and a construction method thereof, and the shock absorption wall comprises a steel frame, cross steel strips, high-strength steel meshes and high-strength concrete, the steel frame is arranged around the wall body, the cross steel strips are arranged in an X-shaped cross mode and are arranged in the middle part of the wall body along a main stress area, the high-strength steel meshes are correspondingly laid on both sides of the wall body, the high-strength concrete is poured into the interspace between the steel frame, the cross steel strips and the high-strength steel meshes, and the cross steel strips and the high-strength steel meshes are covered in the steel frame. Different from the traditional shear wall, the application does not arrange stress steel bars in the wall body, the cross steel strips and the high-strength steel meshes in the wall body jointly resist shearing and cracking, the vertical steel frame replaces the edge component of the traditional shear wall, and the plastic deformation capacity of the shear wall can be improved. When the earthquake occurs, the steel frame and the cross steel strips can jointly act, utilize the elastic deformation to absorb and dissipate the earthquake energy, and the purpose of ductility shock absorption is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-seismic and shock-absorbing structure system, and particularly relates to a fabricated ductility shock-absorbing wall and a construction method thereof. BACKGROUND

[0002] With the development of science and technology and building technology, fabricated buildings have been widely used in various cities. Fabricated building construction is mainly completed through two steps of factory prefabrication and on-site installation, that is, most of the main load-bearing components are prefabricated in the factory by using relevant engineering technology, and then transported to the construction site for installation of the whole building by using professional connection measures.

[0003] The fabricated shear wall structure has good anti-seismic performance, flexible wall arrangement and convenient construction and installation, and is widely used in urban high-rise residential buildings. The existing fabricated shear wall structure mainly aims to control personnel casualties, and does not consider how to reduce the economic loss, the degree of loss of wall function, the repair cost and the recovery time of the use function when a strong destructive near-fault strong earthquake occurs, which is crucial for the urban anti-seismic ductility level. Therefore, the existing fabricated anti-seismic and shock-absorbing shear wall structure needs to be further improved. In order to fundamentally improve the performance of fabricated buildings, including: production, transportation and construction convenience, structural anti-seismic safety and reliability, superior anti-seismic ductility (the use function of the structure can be restored without repair or with slight repair after the earthquake), that is, simple (simple), safe (safe), sustainable and good ductility (sustainable), the research group of the inventor has developed a series of fabricated building "3S" technology system, and the fabricated ductility shock-absorbing wall is one of the "3S" technology systems. SUMMARY

[0004] The present application aims to provide a fabricated ductility shock-absorbing wall and a construction method thereof to solve the technical problems in the background art.

[0005] To achieve the above technical purposes, the present application adopts the following technical solutions:

[0006] A fabricated ductility shock-absorbing wall comprises a steel frame, a cross steel strip, a high-strength steel mesh and high-strength concrete. The steel frame is arranged around the wall, and the steel frames at the four corners of the wall are fixedly connected. The cross steel strip is arranged in the middle of the wall along the main stress area, and the ends of the cross steel strip are fixed to the steel frame. The high-strength steel mesh is laid on both sides of the wall, and the edges of the high-strength steel mesh are fixed to the steel frame. The high-strength concrete is poured into the gap between the steel frame, the cross steel strip and the high-strength steel mesh, and the cross steel strip and the high-strength steel mesh are covered inside. The walls arranged adjacently are fixed by dry connection between the walls, between the wall and the structural beam, and between the wall and the structural column.

[0007] Preferably, the steel frame is made of I-shaped steel, and a through hole for connecting anchor bolts is arranged on the wing plate, and the abdominal cavity is not poured with high-strength concrete as an operation cavity for installing the anchor bolts during the prefabrication stage.

[0008] Preferably, the steel frame is made of T-shaped steel or I-shaped steel, and a through hole for connecting anchor bolts is arranged on the wing plate, and an operation cavity for installing the anchor bolts is arranged on the inner side wall of the wing plate at the position of the through hole.

[0009] Preferably, the steel frames around the wall are fixed and connected by welding or bolting.

[0010] Preferably, the cross steel strip is made of profiled steel strip or steel bar.

[0011] Preferably, the cross steel strip is arranged in the wall in a bonded or unbonded manner.

[0012] Preferably, the tensile strength of the steel wire of the high-strength steel wire mesh is not less than 1200 MPa.

[0013] In addition, the application also provides a construction method of the assembled ductility damping wall, comprising the following steps:

[0014] Step one: arranging steel frames around the wall, connecting the steel frames around the wall into one body, and arranging through holes on the steel frames according to the design positions;

[0015] Step two: arranging cross steel strips in the middle of the wall along the main stress area, and fixing the ends of the cross steel strips on the steel frames;

[0016] Step three: arranging high-strength steel wire meshes on both sides of the wall, and fixing the edges of the high-strength steel wire meshes on the steel frames;

[0017] Step four: pouring high-strength concrete in the gaps between the steel frames, the cross steel strips and the high-strength steel wire meshes, reserving operation cavities at the positions of the through holes, vibrating and compacting the high-strength concrete during the pouring process, and curing to the design strength;

[0018] Step five: assembling the wall in place by dry connection, and sealing and compacting the reserved operation cavities by high-strength concrete.

[0019] Compared with the prior art, the beneficial effects of the present application are as follows: the present application is different from the traditional shear wall, the interior of the wall body is not arranged with horizontal and vertical stress steel bars, the cross steel strips in the middle of the wall body and the high-strength steel wire mesh on both sides of the wall body jointly resist shearing and cracking, the vertical steel frame replaces the edge component of the traditional shear wall, and the plastic deformation capacity of the shear wall can be improved; when the earthquake occurs, the steel frame and the cross steel strips can jointly act, utilize the elastic deformation of itself to absorb and dissipate the seismic energy, so as to achieve the purpose of ductility damping. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or other aspects and advantages of the present application will become more apparent and more readily appreciated by referring to the following detailed description in conjunction with the following figures, which are merely exemplary and do not limit the present application, wherein:

[0021] Figure 1 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application;

[0022] Figure 2 is a cross-sectional structure schematic diagram when I-shaped steel is used to make the steel frame of the present application;

[0023] Figure 3 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Figure 1

[0024] Figure 4 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Figure 2

[0025] Figure 5 is a front structure schematic diagram when T-shaped steel is used to make the steel frame of the present application;

[0026] Figure 6 is a cross-sectional structure schematic diagram when T-shaped steel is used to make the steel frame of the present application;

[0027] Figure 7 is a cross-sectional structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Figure 1

[0028] Figure 8 is a cross-sectional structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Figure 2

[0029] Fig. 1 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 2 is a cross-sectional structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 3 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 4 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 5 is a cross-sectional structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 6 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 7 is a front structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 8 is a cross-sectional structure schematic diagram when I-shaped steel is used to make the steel frame of the present application; Fig. 9 is a front structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Fig. 10 is a cross-sectional structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Fig. 11 is a front structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Fig. 12 is a front structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Fig. 13 is a cross-sectional structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Fig. 14 is a cross-sectional structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; Fig. 15 is a front structure schematic diagram when T-shaped steel is used to make the steel frame of the present application; and Fig. 16 is a front structure schematic diagram when T-shaped steel is used to make the steel frame of the present application. DETAILED DESCRIPTION

[0030] ​​​​In the following description, embodiments of a prefabricated resilient damping wall and its construction method according to the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0031] In the description of this invention, it should be noted that the terms "front," "rear," "left," "right," "top," "bottom," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0033] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention. The following description, in conjunction with... Figures 1-8 The preferred embodiments of the present invention will be described in further detail below:

[0034] Example 1

[0035] like Figures 1-4 As shown, a preferred prefabricated resilient shock-absorbing wall of the present invention includes a steel frame 1, cross steel strips 2, high-strength steel wire mesh 3, and high-strength concrete 4. The steel frame 1 is correspondingly arranged around the perimeter of the wall, and the steel frame 1 around the perimeter of the wall is connected end to end and fixed by welding or bolting. The steel frame 1 is made of I-beam steel, and its flanges are provided with through holes for connecting anchor bolts 6. The interior of its cavity is not poured with high-strength concrete 4 during the prefabrication stage as an operating cavity 5 for installing the connecting anchor bolts 6. After the wall is installed in place, the operating cavity 5 is sealed tightly by pouring high-strength concrete 4.

[0036] The cross steel strip 2 is made of profiled steel strip or steel bar, the cross steel strip 2 is arranged in the middle of the wall in a bonded or unbonded manner along the main stress area in an X-shaped cross arrangement, and the end of the cross steel strip 2 is fixed on the steel frame 1;

[0037] The high-strength steel wire mesh 3 is laid on both sides of the wall, and the edge is fixed on the steel frame 1, and the tensile strength of the steel wire of the high-strength steel wire mesh 3 is not less than 1200MPa;

[0038] The high-strength concrete 4 is poured into the gap between the steel frame 1, the cross steel strip 2 and the high-strength steel wire mesh 3, and the cross steel strip 2 and the high-strength steel wire mesh 3 are covered inside;

[0039] The walls arranged adjacently are fixed by dry connection between the walls, between the walls and the structure beam 7, and between the walls and the structure column 8, wherein the dry connection is achieved by welding or bolting between the walls, and the dry connection is achieved by bolting or welding between the walls and the structure beam 7 and the structure column 8 of the steel frame, and the bolting is achieved by embedding the connecting anchor 6 between the walls and the structure beam 7 and the structure column 8 of the reinforced concrete frame.

[0040] In addition, the application also provides a construction method of the assembled ductility damping wall, which specifically comprises the following steps:

[0041] Step one, the steel frame 1 is arranged around the wall, the steel frame 1 around the wall is connected into one by bolting or welding, and a through hole for installing the connecting anchor 6 later is formed on the steel frame 1 according to the design position;

[0042] Step two, the cross steel strip 2 is arranged in the middle of the wall along the main stress area, and the end of the cross steel strip 2 is fixed on the steel frame 1 by bolting or welding;

[0043] Step three, the high-strength steel wire mesh 3 is laid on both sides of the wall, the high-strength steel wire mesh 3 is arranged outside the cross steel strip 2, and the edge of the high-strength steel wire mesh 3 is fixed on the steel frame 1 by bolting or welding;

[0044] Step four, the high-strength concrete 4 is poured into the gap between the steel frame 1, the cross steel strip 2 and the high-strength steel wire mesh 3, and the operation cavity 5 for installing the connecting anchor 6 later is not poured with the high-strength concrete 4 in the abdominal cavity of the steel frame 1 made of I-shaped steel, the high-strength concrete 4 needs to be vibrated and compacted during pouring, and the wall needs to be maintained to the design strength;

[0045] Step five, the walls are assembled in place by dry connection, and the reserved operation cavity 5 is sealed and compacted by the high-strength concrete 4, Figure 3Taking the structural beams 7 and structural columns 8 of the reinforced concrete frame structure shown as an example, firstly, connecting anchor bolts 6 need to be pre-embedded in the structural beams 7 and structural columns 8 according to the design position. Then, each wall piece is installed in place and fixed by connecting anchor bolts 6. After that, high-strength concrete 4 is poured into the cavity of the steel frame 1 to seal the operating cavity 5.

[0046] Example 2

[0047] like Figures 5-8 As shown, a preferred prefabricated resilient damping wall of the present invention includes a steel frame 1, cross steel strips 2, high-strength steel wire mesh 3, and high-strength concrete 4. The steel frame 1 is correspondingly arranged around the perimeter of the wall, and the steel frame 1 around the perimeter of the wall is connected end to end by welding or bolting. The steel frame 1 is made of T-shaped steel, and its wing plate has through holes for connecting anchor bolts 6. The inner side wall of the wing plate at the through hole position is provided with an operating cavity 5 for installing the connecting anchor bolts 6. The operating cavity 5 is reserved in the prefabrication stage. After the wall is installed in place, the operating cavity 5 is sealed tightly by pouring high-strength concrete 4.

[0048] The cross steel strip 2 is made of shaped steel strip or steel bar. The cross steel strip 2 is arranged in an X-shape. The cross steel strip 2 is arranged in the middle of the wall with or without adhesive along the main stress area, and the ends of the cross steel strip 2 are fixed to the steel frame 1.

[0049] The high-strength steel wire mesh 3 is laid on both sides of the wall, and its edges are fixed on the steel frame 1. The tensile strength of the steel wire of the high-strength steel wire mesh 3 is not less than 1200MPa.

[0050] The high-strength concrete 4 is poured into the gap between the steel frame 1, the cross steel strips 2 and the high-strength steel wire mesh 3, and covers the cross steel strips 2 and the high-strength steel wire mesh 3 inside;

[0051] The adjacent walls are fixed to each other, to the structural beams 7, and to the structural columns 8 by dry connection. The walls are fixed to each other by welding or bolting. The walls are fixed to the structural beams 7 and structural columns 8 of the steel frame by bolting or welding. The walls are fixed to the structural beams 7 and structural columns 8 of the reinforced concrete frame by pre-embedded anchor bolts 6.

[0052] In addition, the present invention also provides a construction method for the above-mentioned prefabricated resilient damping wall, which specifically includes the following steps:

[0053] Step 1: Install steel frame 1 around the wall and connect the steel frame 1 around the wall into one piece by bolting or welding. Make through holes on the steel frame 1 at the designed positions for later installation of anchor bolts 6.

[0054] Step two, cross steel strip 2 is laid in the middle of the wall along the main stress area, and the end of cross steel strip 2 is fixed on steel frame 1 by bolting or welding;

[0055] Step three, high-strength steel wire mesh 3 is laid on both sides of the wall, high-strength steel wire mesh 3 is arranged outside cross steel strip 2, and the edge of high-strength steel wire mesh 3 is fixed on steel frame 1 by bolting or welding;

[0056] Step four, high-strength concrete 4 is poured in the gap between steel frame 1, cross steel strip 2 and high-strength steel wire mesh 3, and the operation cavity 5 is reserved in advance at this time, high-strength concrete 4 needs to be vibrated and compacted during pouring, and the wall is maintained to the design strength;

[0057] Step five, the wall is assembled in place by dry connection, and the reserved operation cavity 5 is sealed and compacted with high-strength concrete 4, so that Figure 6 As shown in the reinforced concrete frame structure beam 7 and column 8, the connecting anchor 6 needs to be pre-buried in the structure beam 7 and column 8 according to the design position, then each wall is installed in place and fixed by connecting anchor 6, and then high-strength concrete 4 is poured in each operation cavity 5 to seal the operation cavity 5.

[0058] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fabricated ductile seismic wall, characterized by: The application relates to a wall body, which comprises steel frames (1), cross steel strips (2), high-strength steel wire meshes (3) and high-strength concrete (4), the steel frames (1) are arranged around the wall body, the steel frames (1) around the wall body are fixedly connected at the head and tail, the cross steel strips (2) are arranged in an X-shaped cross mode, the cross steel strips (2) are arranged in the middle part of the wall body along a main stress area, and the tail ends of the cross steel strips (2) are fixed on the steel frames (1), the high-strength steel wire meshes (3) are arranged on the two sides of the wall body, and the edges of the high-strength steel wire meshes (3) are fixed on the steel frames (1), the high-strength concrete (4) is poured into the interspace between the steel frames (1), the cross steel strips (2) and the high-strength steel wire meshes (3), and the cross steel strips (2) and the high-strength steel wire meshes (3) are covered by the high-strength concrete (4), the steel frames (1) are made of I-shaped steel or T-shaped steel, through holes for penetrating connecting anchor bolts (6) are formed in the wings of the steel frames (1), the wall bodies arranged adjacently are fixed through dry connection between the wall bodies, between the wall body and a structure beam (7), and between the wall body and a structure column (8), after the wall bodies are assembled in place through dry connection, the reserved operation cavities (5) are tightly sealed by the high-strength concrete (4). When the I-shaped steel is used, the abdominal cavity of the I-shaped steel is not poured with the high-strength concrete (4) as the operation cavity (5) for mounting the connecting anchor bolt (6) during a prefabrication stage. When the T-shaped steel is used, the inboard wall body of the through hole position of the wings is provided with the operation cavity (5) for mounting the connecting anchor bolt (6).

2. The fabricated ductile damping wall of claim 1, wherein: The steel frames (1) around the wall body are fixedly connected through welding or bolting.

3. The fabricated ductile damping wall of claim 1, wherein: The cross steel strips (2) are made of profiled steel strips or steel bars.

4. The fabricated ductile damping wall of claim 1, wherein: The cross steel strips (2) are arranged in the wall body in a bonded or unbonded mode.

5. The fabricated ductile damping wall of claim 1, wherein: The tensile strength of the steel wire of the high-strength steel wire mesh (3) is not less than 1200MPa.

6. The fabricated ductile damping wall of claim 1, wherein: The edges of the high-strength steel wire mesh (3) are fixed on the steel frames (1) through bolting or welding.

7. A construction method for the construction of a prefabricated ductile damping wall according to any one of claims 1 to 6, characterized in that The application further discloses a wall body construction method, which comprises the following steps: Step one, arranging the steel frames (1) around the wall body, connecting the steel frames (1) around the wall body into one body, and forming through holes on the steel frames (1) according to the design positions; Step two, arranging the cross steel strips (2) in the middle part of the wall body along the main stress area, and fixing the tail ends of the cross steel strips (2) on the steel frames (1); Step three, arranging the high-strength steel wire meshes (3) on the two sides of the wall body, and fixing the edges of the high-strength steel wire meshes (3) on the steel frames (1); Step four, pouring the high-strength concrete (4) into the interspace between the steel frames (1), the cross steel strips (2) and the high-strength steel wire meshes (3), reserving operation cavities (5) at the through hole positions, tightly vibrating and compacting the high-strength concrete (4) during the pouring process, and curing the high-strength concrete (4) to the design strength; Step five, assembling the wall bodies in place through dry connection, and tightly sealing the reserved operation cavities (5) by the high-strength concrete (4).

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