CN104775553A - Novel L-shaped edge member for superimposed slab shear walls and connecting method for novel L-shaped edge member - Google Patents

Abstract

The invention discloses a novel L-shaped laminated slab shear wall edge member and a connection method thereof, which are suitable for laminated slab assembled industrial buildings and are mainly used in laminated slab concrete shear wall structures. The edge components of the new L-shaped laminated slab shear wall are mainly composed of flange wall panels, web wall panels, full-length longitudinal reinforcement, longitudinal lap reinforcement, horizontal lap reinforcement, longitudinal lap reinforcement cages, and cast-in-place concrete core walls , the flange wall panels and the web wall panels are prefabricated laminated wall panels, and at one end of the edge member forming the L-shaped corner, the stirrups and longitudinal reinforcement required in the structural design are prefabricated in the laminated wall panels. The main feature of the present invention is that the edge components of the L-shaped laminated slab shear wall are assembled, which brings four advantages to the engineering construction: 1) no construction formwork is required on site; 2) no binding steel bars are required on site; 3) construction speed is increased; 4) Improve the industrialization of laminated slab concrete buildings.

Description

A new L-shaped laminated plate shear wall edge member and its connection method

technical field

The invention relates to the field of building structures, in particular to a novel L-shaped composite slab shear wall edge member suitable for a composite slab concrete shear wall structure and a connection method thereof.

Background technique

With the improvement of people's living standards, there is a higher demand for living environment. Traditional extensive housing construction methods have been gradually replaced by industrialized and integrated construction methods. In this context, the laminated slab concrete shear wall structure came into being, which can realize the standardization and modularization of residential structural components, reduce the erection of on-site formwork supports, and also reduce the construction period.

However, according to the currently available information, including the application publication number CN102912900A "A Prefabricated Assembly Laminated Slab Concrete Shear Wall Structure and Its Construction Method" and the authorized announcement No. CN202925721U "A Prefabricated Assembly Laminated Slab Concrete Shear Wall Structure" Concrete Shear Wall Structure", the L-shaped corners of the current laminated slab concrete shear wall structure all use cast-in-place edge components. efficiency.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention aims to provide a novel L-shaped laminated slab shear wall edge member and its connection method, which eliminates the need for L-shaped laminated slab shear walls without reducing the structural integrity. The reinforcement binding and formwork erection of the edge components have achieved the effect of improving the construction efficiency of the laminated slab concrete shear wall structure.

In order to achieve the above object, the present invention adopts the following technical solutions:

A new L-shaped laminated plate shear wall edge member, including stirrups, longitudinal reinforcement, longitudinal lap reinforcement, horizontal lap reinforcement; also includes flange wall panels and web wall panels, both of which are composed of two layers Prefabricated laminated wall panels composed of wall panels; cast-in-place concrete core walls between the two layers of wall panels of the flange wall panels and between the two layers of wall panels of the web wall panels; the flange wall panels and the web wall panels One end of them is combined with each other and is L-shaped; the stirrups and longitudinal reinforcement are distributed according to the requirements of the structural design and embedded in the flange wall panel and the web wall panel; the horizontal overlapping reinforcement is arranged on the two layers of the flange wall panel In the cast-in-place concrete core wall between the wall panels, the longitudinal lap steel bars are distributed in the cast-in-place concrete core wall according to the structural design.

Further, one end of the horizontally lapped steel bar is located in the cast-in-place concrete core wall between two layers of the web wall panels, and is in contact with the inner surface of the outer wall panels of the web panels.

Further, the stirrup pre-embedded in the web wall panel is provided with an overhanging section extending toward the flange wall panel, and is hooped with a full-length longitudinal steel bar.

Further, the cast-in-place concrete core wall at the junction of the flange wall panel and the web wall panel is provided with a longitudinally overlapping reinforcement cage, and the longitudinally overlapping reinforcement cage is mainly formed by connecting several longitudinally overlapping reinforcements.

The connection method of the above-mentioned novel L-type laminated plate shear wall edge member comprises the following steps:

S1 Reserved longitudinal overlapping reinforcement: reserve longitudinal overlapping reinforcement and full-length longitudinal reinforcement at the predetermined position on site;

S2 flange wall panel in place: hoist the flange wall panel with pre-embedded stirrups and longitudinal reinforcement to the predetermined position, adjust the levelness and verticality of the flange wall panel, and fix it;

S3 Insertion of horizontally lapped steel bars: Insert horizontally lapped steel bars between the two layers of wall panels of the flange wall panels to ensure that they do not affect the positioning of the web wall panels. The diameter and spacing of horizontally lapped steel bars are determined according to design requirements ; There is a space between the two layers of the flange wall panels to allow the sliding of the horizontally lapped steel bars;

S4 Web wall panel placement: hoist the web wall panel with pre-embedded longitudinal steel bars and stirrups to the predetermined position, adjust the levelness and verticality of the web wall panel, and fix it;

S5 Placement of the horizontally lapped steel bar: Slide the horizontally lapped steel bar toward the web wall panel, so that one end of it enters the web wall panel until it touches the inner surface of the wall panel on the outer side of the web wall panel;

Insertion of S6 longitudinally lapped reinforcement cage: Insert the longitudinally lapped reinforcement cage into the intersection of the flange wall panel and the web wall panel;

S7 Cast-in-situ concrete core wall pouring construction: check the size deviation and stability of the laminated wall panel installation before concrete pouring, and pour the concrete core wall after meeting the quality requirements.

The beneficial effects of the present invention are:

1. By directly prefabricating the stirrups and longitudinal steel bars of the edge members of the L-shaped laminated slab shear wall in the laminated wall panel, the on-site workers are exempted from the reinforcement binding and formwork erection, thereby effectively reducing labor intensity and improving the laminated slab. Concrete shear wall structure construction efficiency, improve the degree of industrialization of construction;

2. The setting of the stirrup extension section at the intersection of the web wall panel and the flange wall panel, one end of the horizontally lapped reinforcement and the longitudinally lapped reinforcement cage ensures the edge components of the L-shaped laminated slab shear wall. Integrity, that is, the integrity of the structure.

Description of drawings

Fig. 1 is a transverse sectional plane view of edge members of a traditional L-shaped laminated slab shear wall;

Fig. 2 is the transverse sectional plane view of the edge member of the novel L-shaped laminated slab shear wall;

3 is a schematic diagram of step S1 of the connection method of the present invention;

4 is a schematic diagram of step S2 of the connection method of the present invention;

5a and 5b are schematic diagrams of step S3 of the connection method of the present invention;

6 is a schematic diagram of step S4 of the connection method of the present invention;

7 is a schematic diagram of step S5 of the connection method of the present invention;

Fig. 8a, Fig. 8b and Fig. 8c are schematic diagrams of step S6 of the connection method of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution, and provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

As shown in Figure 1, the edge components of the L-shaped laminated slab shear wall of the traditional laminated slab concrete shear wall structure adopt the traditional cast-in-place method, and the No. 1 laminated wall panel 101 and the No. 2 laminated wall panel 102 are placed After being hoisted in place, leveled and fixed, construction workers are required to bind the longitudinal steel bars 104 and stirrup bars 105 in the edge members, arrange the horizontally lapped steel bars 106 and the second horizontally lapped steel bars 107, and further build formwork after the steel bars are bound , and finally the concrete core wall 108 is poured, wherein the longitudinally overlapping steel bars 103 are distributed in the concrete core wall 108 . An installation tolerance seam 109 is left at the junction of the No. 1 laminated wall panel 101 and the No. 2 laminated wall panel 102 .

It can be seen from the above that the construction efficiency of the edge members of the L-shaped laminated slab shear wall of the traditional laminated slab concrete shear wall structure is low, and the labor intensity of the workers is relatively high.

As shown in Figure 2, a novel L-shaped laminated plate shear wall edge member provided by the present invention includes stirrups 5, longitudinal reinforcement 4, longitudinal lapping reinforcement 3, and horizontal lapping reinforcement 6; it also includes a flange wall Panel 10 and web wall panel 11, both are prefabricated laminated wall panels composed of two layers of wall panels; Between them is a cast-in-place concrete core wall 8; one end of the flange wall panel 10 and the web wall panel 11 are combined with each other in an L shape, and an installation tolerance joint 9 is left at the intersection; the stirrup 5 and the longitudinal reinforcement 4 are based on The requirements of the structural design are distributed and pre-embedded in the flange wall panel 10 and the web wall panel 11; the horizontal lap steel bars 6 are arranged in the cast-in-place concrete core wall 8 between the two layers of the flange wall panel 10 , while the longitudinal lap steel bars 3 are reserved and finally distributed in the cast-in-place concrete core wall 8 according to the structural design.

Furthermore, one end of the horizontally lapped steel bar 6 is located in the cast-in-place concrete core wall 8 between the two layers of the web wall panel 11, and is located on the inner side of the outer wall panel with the web wall panel 11 Face to face contact.

Further, the stirrup 5 pre-embedded in the web wall panel 11 is provided with an overhanging section 13 extending toward the flange wall panel 10 and is hooped with a long longitudinal steel bar 12 .

Further, the cast-in-place concrete core wall at the intersection of the flange wall panel 10 and the web wall panel 11 is provided with a longitudinally overlapping reinforcement cage 14, and the longitudinally overlapping reinforcement cage 14 is mainly connected by several longitudinally overlapping reinforcement bars. made.

The connection method of the above-mentioned novel L-type laminated plate shear wall edge member comprises the following steps:

S1, as shown in Figure 3, reserve longitudinal lap reinforcement bars 3 and full-length longitudinal reinforcement bars 12 at predetermined positions on site;

S2 flange wall panels in place: as shown in Figure 4, hoist the flange wall panels 10 pre-embedded with stirrups 5 and longitudinal steel bars 4 to the predetermined position, adjust the levelness and verticality of the flange wall panels 10, and fixed;

S3 Insertion of horizontally lapped steel bars: as shown in Figure 5a and Figure 5b, insert horizontally lapped steel bars 6 between the two layers of wall panels of the flange wall panel 10 to ensure that it does not affect the position of the web wall panel 11, The diameter and spacing of the horizontally lapped steel bars 6 are determined according to the design requirements; there is a space between the two-layer wallboards of the flange wall panel 10 to allow the horizontally lapped steel bars 6 to slide;

S4 Placement of the web wall panel: as shown in Figure 6, hoist the web wall panel 11 with the same pre-embedded longitudinal steel bars 4 and stirrups 5 to the predetermined position, and adjust the horizontality and verticality of the web wall panel 11 , and fixed;

S5 Placement of the horizontally lapped steel bar: as shown in Figure 7, slide the horizontally lapped steel bar 6 toward the web wall panel 11, so that one end enters the web wall panel 11 until it touches the web wall panel 11 the inner side of the wall panel located on the outer side;

S6 Insertion of longitudinally overlapping reinforcement cages: as shown in Fig. 8a, Fig. 8b and Fig. 8c, insert the longitudinally overlapping reinforcing cages 14 into the intersection of the flange wall panels 10 and the web panel 11.

S7 Cast-in-situ concrete core wall pouring construction: check the size deviation and stability of the laminated wall panel installation before concrete pouring, and pour the concrete core wall 8 after meeting the quality requirements.

For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and ideas, and all these changes and modifications should be included in the protection scope of the claims of the present invention.

Claims (5)

1. a Novel L-shaped overlaid plate type shear wall edge member, comprises stirrup, longitudinal reinforcement, longitudinal lap joint reinforcing bar, level overlap joint reinforcing bar, it is characterized in that, also comprise edge of a wing wallboard and web wallboard, both prefabricated composite wallboard all for being made up of two-layer wallboard; It is then cast-in-situ concrete core wall between the two-layer wallboard of edge of a wing wallboard, between the two-layer wallboard of web wallboard; Wherein one end of edge of a wing wallboard and web wallboard be combined with each other and is L-type; Stirrup and longitudinal reinforcement distribute according to the requirement of structure design and are embedded in edge of a wing wallboard and web wallboard; In the cast-in-situ concrete core wall of described level overlap joint steel-bar arrangement between the two-layer wallboard of edge of a wing wallboard, longitudinal lap joint reinforcing bar is then distributed in described cast-in-situ concrete core wall according to structure design.

2. a kind of Novel L-shaped overlaid plate type shear wall edge member according to claim 1, it is characterized in that, in the cast-in-situ concrete core wall between the two-layer wallboard of described web wallboard of one end of described level overlap joint reinforcing bar, and contact with the medial surface that web wallboard is positioned at the wallboard in outside.

3. a kind of Novel L-shaped overlaid plate type shear wall edge member according to claim 1, is characterized in that, the stirrup be embedded in described web wallboard is provided with overhanging section that extends to wallboard direction, the edge of a wing, and cuff has elongated longitudinal reinforcement.

4. a kind of Novel L-shaped overlaid plate type shear wall edge member according to claim 1, it is characterized in that, be provided with longitudinal lap joint reinforcing cage in the cast-in-situ concrete core wall of described edge of a wing wallboard and web wallboard intersection, described longitudinal lap joint reinforcing cage forms primarily of some longitudinal lap joint bar connecting.

5. a method of attachment for Novel L-shaped overlaid plate type shear wall edge member according to claim 1, is characterized in that, comprise the steps:

S1 at the scene precalculated position reserves longitudinal lap joint reinforcing bar and elongated longitudinal reinforcement;

S2 edge of a wing wallboard is in place: will be embedded with the edge of a wing wallboard lifting of stirrup and longitudinal reinforcement to precalculated position, the levelness of adjustment edge of a wing wallboard and verticality, and fixing;

The insertion of S3 level overlap joint reinforcing bar: level is overlapped reinforcing bar and insert between the two-layer wallboard of edge of a wing wallboard, guarantee that it does not affect the in place of web wallboard, diameter and the spacing of level overlap joint reinforcing bar are determined according to designing requirement; The space of tolerable injury level overlap joint slip of bar is left between the two-layer wallboard of edge of a wing wallboard;

S4 web wallboard in place: the web wallboard lifting of longitudinal reinforcement and stirrup will be embedded with to precalculated position, the levelness of adjustment web wallboard and verticality, and fixing;

S5 level overlaps the in place of reinforcing bar: level is overlapped reinforcing bar and skid off to web wallboard direction, its one end is entered in web wallboard, until encounter the medial surface that web wallboard is positioned at the wallboard in outside;

The insertion of S6 longitudinal lap joint reinforcing cage: longitudinal lap joint reinforcing cage is inserted into edge of a wing wallboard and web wallboard intersection;

S7 cast-in-situ concrete core wall pouring construction: check dimensional errors, stable degree that composite wallboard is installed before concreting, after conforming to quality requirements, concreting core wall.