CN106499212A - Profiled sheet shear wall and the attachment structure and its construction method of RC Vierendeel girders - Google Patents

Abstract

The invention discloses a connection structure of a profiled steel plate shear wall and an RC frame beam and a construction method thereof. The connection structure includes RC frame beams composed of frame beams and frame columns. Steel slats are fixed on the inner side of the RC frame beams. Bolt holes are arranged on the steel slats. The connection structure also includes profiled steel plate shear walls, profiled steel plates The shear wall is made of adjacent profiled steel plates that are partially overlapped and then fixedly connected, and the end of the profiled steel plate shear wall near the frame beam is fixedly connected with the steel strips. The connection structure and construction method of the profiled steel plate shear wall and the RC frame beam of the present invention, the profiled steel plate reinforcement part and the steel strip connection member have good economic performance, and a simple and easy connection method is proposed in terms of operation and connection, shortening The construction period; this connection method solves the connection problem between the profiled steel plate shear wall and the frame beam in the actual project, and the construction method is reliable.

Description

Connection structure and construction method of profiled steel plate shear wall and RC frame beam

technical field

The invention relates to a connection structure of a profiled steel plate shear wall and an RC frame beam and a construction method thereof, belonging to the technical field of construction.

Background technique

In GB50223-2008 "Standards for Seismic Fortification Classification of Construction Engineering", the anti-seismic fortification category of outpatient clinics, medical technology and inpatient rooms that undertake particularly important medical tasks in tertiary hospitals is classified as special fortification category (category A), and class II and III The other departments of the first-level hospitals are classified as key fortifications (Class B); the newly revised "Code for Seismic Design of Buildings" in 2016 also raised the earthquake resistance level accordingly. It is necessary to carry out seismic reinforcement for existing hospital buildings, and it has important research significance and practical value to carry out research on the seismic reinforcement technology of hospital building frame structures. After the RC frame structure strengthened by the profiled steel shear wall is proposed, the connection between the profiled steel shear wall and the frame beam in the actual engineering needs further research.

The existing profiled steel plate shear wall structure for strengthening RC frame structure is as described in the utility model patent "Profiled steel plate shear wall for strengthening RC frame structure" (publication number: CN 203783172 U).

The connection methods of profiled steel plate shear walls and RC frame beams and columns in the existing research have the following deficiencies:

1. The connecting member (steel bar) needs to penetrate the upper and lower parts of the beam, as well as the left and right sides of the column;

2. The connecting member (channel steel) is welded to the steel slats distributed by beams and columns, and then the filling wall is built.

The above operations 1 and 2 are suitable for experimental research. For the original structure of the actual project, the filling wall has been built inside the frame, and it is difficult to realize the installation of connecting components (steel bars, channel steel).

On the basis of the above existing studies, the present invention studies the connection of profiled steel plate shear walls and RC frame beams and its construction method.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the existing connection methods, solve the problem of connection between profiled steel plate shear walls and RC frame beams in actual engineering, and combine with steel bonding technology to provide a convenient construction, save steel, practical and effective The connection structure of profiled steel plate shear wall and RC frame beam and its construction method.

Technical scheme of the present invention is as follows:

The invention provides a connection structure between a profiled steel plate shear wall and an RC frame beam, which includes an RC frame beam composed of a frame beam and a frame column, and a steel strip is fixedly arranged on the inside of the frame beam, and bolts are arranged on the steel strip The connection structure also includes a profiled steel plate shear wall, the profiled steel plate shear wall is fixedly connected by adjacent profiled steel plates after partial overlapping, and the profiled steel plate shear wall is close to the end of the frame beam Fixed connection with steel slats.

As a further improvement of the present invention, chemical anchor bolts are implanted in the bolt holes of the steel strips, and the steel strips and the profiled steel plate shear walls are connected by self-tapping screws.

As a further improvement of the present invention, adjacent profiled steel plates are connected by rivets to form a profiled steel plate shear wall.

As a further improvement of the present invention, the profiled steel plate shear walls are arranged as a group arranged diagonally in one direction, or combined with multiple sets of profiled steel plate shear walls with a horizontal angle of 30 degrees, 45 degrees or 60 degrees Arrangement, or both ends of the profiled steel shear wall are connected with frame columns.

The present invention also provides a construction method of a connection structure between a profiled steel plate shear wall and an RC frame beam, which specifically includes the following steps:

Step 1: Determine the position and width of the steel strip to be pasted;

Step 2: Grassroots processing;

Step 3: Pre-pasting of steel strips: Pre-paste the processed steel strips before pasting them. When pre-pasting the steel strips, punch the bolt holes according to the positions of the bolt holes on the steel strips;

Step 4: Chemical anchor bolt planting: After the bolt holes are drilled and the holes are cleared, chemical anchor bolts are planted;

Step 5: Glue application: apply the prepared structural glue on the treated steel surface with a spatula;

Step 6: Paste: Paste the steel strip coated with structural glue according to the position required by the design, and tighten the mounting bolts immediately after the steel strip is pasted;

Step 7: Curing and maintenance: the structural adhesive is cured and can be used under stress in 2-5 days;

Step 8: Due to the limited width of the profiled steel plates, adjacent profiled steel plates are connected by rivets to form a profiled steel plate shear wall;

Step 9: Connect the profiled steel shear wall and steel slats by self-tapping screws.

Further, step 2 includes two parts:

The first part, concrete paste surface treatment: remove the concrete surface layer within the width range of the pasted steel slats, grind away the laitance layer on the concrete surface, and clean it up;

The second part, the treatment of the pasting surface of the steel plate: when there is a slight rust on the pasting surface of the steel strip, it is derusted, and the metallic luster is exposed after polishing, and then the surface of the steel is cleaned.

Further, in step 5, the thickness of the structural adhesive is 3-6mm, and the middle is thicker and the edge is thinner.

The beneficial effects of the present invention are as follows:

The connection structure and construction method of the profiled steel plate shear wall and the RC frame beam of the present invention have the following advantages:

(1) Profiled steel plates and expansion bolts can be pre-made in the factory, which is convenient for transportation;

(2) The profiled steel plate shear wall and the RC frame beam are connected by expansion bolts, which is simple and easy, and the reinforcement time is shortened;

(3) The experimental research shows that the connection between the profiled steel plate shear wall and the RC frame beam is reliable;

(4) Solved the connection problem between the profiled steel plate shear wall and the frame in the actual project, making the structure simple and convenient for construction;

(5) The profiled steel plate used is light in weight, beautiful in appearance, good in economy, and has wide application prospects.

Description of drawings

Fig. 1 is a structural schematic diagram of the connection structure of the profiled steel plate shear wall and the RC frame beam of the present invention.

Fig. 2 is a sectional view of A-A in Fig. 1 .

In the figure, 1. frame beam; 2. frame column; 3. profiled steel plate shear wall; 4. rivet; 5. self-tapping screw; 6. steel strip; 7. chemical anchor.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in FIGS. 1-2 , the connection structure between the profiled steel plate shear wall and the RC frame beam of the present invention includes an RC frame beam composed of a frame beam 1 and a frame column 2 . A steel strip 6 is fixedly arranged on the inner side of the RC frame beam, and bolt holes are arranged on the steel strip 6 . The connection structure of the present invention also includes a profiled steel plate shear wall 3, which is fixedly connected by adjacent profiled steel plates after partial overlapping, and the profiled steel plate shear wall 3 is close to the end of the frame beam 1 The part is fixedly connected with the steel strip 6.

As a preferred embodiment of the present invention, chemical anchor bolts 7 are implanted in the bolt holes of the steel strips 6 , and the steel strips 6 and the profiled steel plate shear walls 3 are connected by self-tapping screws 5 .

As a preferred embodiment of the present invention, adjacent profiled steel plates are connected by rivets 4 to form a profiled steel plate shear wall 3 .

As a preferred embodiment of the present invention, the above-mentioned profiled steel plate shear wall 3 can be arranged diagonally in one direction (as shown in Figure 1) or multiple groups of shear forces with angles of 30 degrees, 45 degrees, and 60 degrees to the horizontal The wall layout is also applicable, and both sides of the profiled steel plate shear wall 3 can also be connected with the RC frame column 2, and the illustration will not be given for example.

The connection between the profiled steel plate shear wall and the RC frame beam and its construction method,

The construction side of the connection structure of profiled steel plate shear wall and RC frame beam of the present invention comprises the following steps:

1. Mark and position on both sides of the frame beam 1, and determine the position and width of the steel slat 6 to be pasted;

2. Base treatment: including two parts, (1) Concrete paste surface treatment: remove the surface layer of concrete surface within 6 widths of the pasted steel slats, use alloy sheet or wire brush to remove the laitance layer on the concrete surface, and clean it up (2) Steel plate pasting surface treatment: there is slight rust on the pasting surface of the steel strip 6, it needs to be derusted, then polished with an angle grinder to expose the metallic luster, and then the steel surface is cleaned up.

3. Steel strip pre-pasting: pre-paste the processed steel strip 6 before pasting. When the steel strip 6 is pre-pasted, punch out the bolt holes according to the position of the bolt holes on the steel strip 6 with an electric hammer.

4. Chemical anchor bolt planting: After the bolt holes are drilled and the holes are cleared, plant chemical anchor bolts 7.

5. Glue application: apply the prepared structural glue on the surface of the treated steel with a spatula, the thickness is about 3-6mm, the application should be thick in the middle and thin at the edge, evenly applied, and there should be no missing places.

6. Sticking: Paste the steel strip 6 coated with structural glue according to the position required by the design. After the steel strip 6 is pasted, the mounting bolts should be tightened immediately so that the glue is just squeezed out from the edge of the steel strip.

7. Curing and maintenance: the structural adhesive is cured and can be used under stress in 2-5 days.

8. Due to the limited width of the profiled steel plates, adjacent profiled steel plates are connected by rivets 4 to form a profiled steel plate shear wall 3 .

9. Connect the profiled steel plate shear wall 3 and steel strips 6 through self-tapping screws 5 .

The connection structure and construction method of the profiled steel plate shear wall and the RC frame beam of the present invention, the profiled steel plate reinforcement part and the steel strip connecting member have good economic performance, and a simple and easy connection method is proposed in terms of operation and connection, shortening Construction period. This connection method solves the connection problem between the profiled steel plate shear wall and the frame beam in the actual project, and the construction method is reliable.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. the attachment structure of profiled sheet shear wall and RC Vierendeel girders, including the RC frames being made up of Vierendeel girder (1) and frame column (2) Set a roof beam in place, it is characterised in that：Steel plate strip (6) is fixedly installed on the inside of RC Vierendeel girders, is provided with bolt on steel plate strip (6) Hole, the attachment structure also include that profiled sheet shear wall (3), profiled sheet shear wall (3) are passed through by adjacent profiled sheet It is formed by fixedly connecting after partly overlapping, profiled sheet shear wall (3) is fixed with steel plate strip (6) near the end of Vierendeel girder (1) to be connected Connect.

2. the attachment structure of profiled sheet shear wall according to claim 1 and RC Vierendeel girders, it is characterised in that：The steel Chemical anchor bolts (7) are implanted with the bolt hole of lath (6), and steel plate strip (6) passes through tapping screw with profiled sheet shear wall (3) (5) connect.

3. the attachment structure of profiled sheet shear wall according to claim 1 and RC Vierendeel girders, it is characterised in that：Adjacent pressure Shape steel plate forms profiled sheet shear wall (3) by rivet (4) connection.

4. the attachment structure of profiled sheet shear wall according to claim 1 and RC Vierendeel girders, it is characterised in that：The pressure The rib of slab direction of shape steel plate shear wall (3) is set to unidirectional diagonally arranged one group, or is in 30 degree, 45 degree or 60 degree with level Multigroup profiled sheet shear wall (3) combination arrangement of angle, or the two ends of profiled sheet shear wall (3) are with frame column (2) even Connect.

5. profiled sheet shear wall and the construction method of the attachment structure of RC Vierendeel girders, specifically include following steps：

Step 1：Determine paste steel plate strip position and steel plate strip width；

Step 2：Base treatment；

Step 3：Steel plate strip is pasted in advance：Processing steel plate strip first carries out pre- patch before stickup, by steel plate strip when steel plate strip is pasted in advance Get bolt hole in bolt hole position；

Step 4：Chemical anchor bolts plant bolt：After bolt hole is accomplished fluently and borehole cleaning is finished, chemical anchor bolts are planted；

Step 5：Gluing：Steel surface after treatment is smeared in the structure glue spatula of preparation；

Step 6：Paste：The steel plate strip for coating structure glue is pasted by the position of design requirement, steel plate strip is twisted after pasting immediately Tight installation bolt；

Step 7：Curing conservation：Structure adhesive curing, force-applied use in 2-5 days；

Step 8：As profiled sheet plate width is limited, adjacent profiled sheet forms profiled sheet shear wall by rivet interlacement；

Step 9：By self-drilling connection profiled sheet shear wall and steel plate strip.

6. the construction method of the attachment structure of profiled sheet shear wall according to claim 5 and RC Vierendeel girders, its feature It is：Step 2 includes two parts：

Part I, the process of concrete sticking veneer：Concrete surface surface layer in paste steel plate strip width range is rooted out, is ground off Concrete surface laitance layer, and clean out；

Part II, steel sticking face are processed：When steel plate strip sticking veneer has slight rusty stain, processing of rust removing is carried out to which, polished After expose metallic luster, then clean out steel surface.

7. the construction method of the attachment structure of profiled sheet shear wall according to claim 5 and RC Vierendeel girders, its feature It is：In step 5, the thickness of structure glue is 3～6mm, smears thick middle thin edge.