CN215054555U

CN215054555U - Same-span variable-cross-section beam structure

Info

Publication number: CN215054555U
Application number: CN202022810224.2U
Authority: CN
Inventors: 邹轶; 王鑫玮; 田楚兴; 毛丽媛
Original assignee: Chongqing Yuandao Architectural Planning And Design Co ltd
Current assignee: Chongqing Yuandao Architectural Planning And Design Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-12-07
Anticipated expiration: 2030-11-27

Abstract

The application relates to the field of reinforced concrete beams, in particular to a same-span variable-section beam structure. The key point of the technical scheme is that the wall comprises a plurality of main ribs which are parallel to each other and vertically and fixedly connected on a wall body, and the main ribs are arranged in a rectangular array; the main reinforcements comprise long main reinforcements and short main reinforcements, the short main reinforcements are positioned at the upper parts of the long main reinforcements, a plurality of annular stirrups are wrapped outside the main reinforcements, the annular stirrups are uniformly and densely distributed at the positions close to the variable cross sections to form dense sections, and the annular stirrups at the positions far away from the variable cross sections are uniformly and dispersedly distributed to form dispersed sections; the annular stirrups are arranged densely and are provided with opening stirrups. Reach and made things convenient for inside concrete pipe and the stick of vibrating can go deep into beam structure.

Description

Same-span variable-cross-section beam structure

Technical Field

The application relates to the field of reinforced concrete beams, in particular to a same-span variable-section beam structure.

Background

At present, in building construction, a cross beam is often used as a support structure for a plane, but for platforms with different heights, the same-section beam is difficult to mount, and the problem that a variable-section beam can be well improved is solved.

In the correlation technique, variable cross section beam structure includes many main muscle, and the main muscle includes long main muscle and short main muscle, and many long main muscle and many short main muscle are parallel to each other and perpendicular rigid coupling on the wall body, and short main muscle is located long main muscle top, evenly wraps in short main muscle and the long main muscle outside and is equipped with a plurality of annular stirrups, and annular stirrups evenly distributed is near roof beam variable cross section. Concrete is poured through the concrete guide pipe on main muscle and annular stirrup, then stretch into the inside vibration that vibrates of concrete with the vibrating rod, shakes out the bubble in the concrete, treats the concrete solidification, and wall body one end formation ladder face is kept away from to short main muscle.

In view of the above-mentioned related art solutions, the inventors found that: because the annular stirrup near the step surface is arranged closely, when concrete is poured, the concrete guide pipe and the vibrating rod are difficult to go deep into the beam structure, so that the concrete is difficult to pour, and the vibrating rod is difficult to vibrate in the concrete to cause the beam structure possibly to have bubbles, so that the structural strength of the beam is reduced.

SUMMERY OF THE UTILITY MODEL

Inside convenient concrete pipe and the vibrating rod can go deep into beam structure, this application provides a with span variable cross-section beam structure.

The application provides a with span variable cross section girder construction adopts following technical scheme:

a girder structure with the same span and variable cross sections comprises a plurality of main ribs, wherein the main ribs are parallel to each other and vertically and fixedly connected to a wall body, and the main ribs are arranged in a rectangular array; the main reinforcements comprise long main reinforcements and short main reinforcements, the short main reinforcements are positioned at the upper parts of the long main reinforcements, a plurality of annular stirrups are wrapped outside the main reinforcements, the annular stirrups are uniformly and densely distributed at the positions close to the variable cross sections to form dense sections, and the annular stirrups at the positions far away from the variable cross sections are uniformly and dispersedly distributed to form dispersed sections; the annular stirrups are arranged densely and are provided with opening stirrups.

By adopting the technical scheme, when a worker pours concrete, the worker can enable the concrete guide pipe to go deep into the beam structure from the opening of the opening stirrup, so that pouring is more convenient; after concrete is poured, workers can enable the vibrating rod to go deep into the beam from the opening of the opening stirrup to vibrate the concrete which is not dried, so that air bubbles are discharged from the concrete, and the beam structure is stable finally.

Preferably, the opening stirrups comprise a first opening stirrup and a second opening stirrup, the first opening stirrup is arranged on one side, close to the wall, of the variable cross section of the beam, and the second opening stirrup is arranged on one side, far away from the wall, of the variable cross section of the beam; the free end of the first opening stirrup opening is bent towards the inside of the beam to form a first bending head, and the free end of the second opening stirrup opening is bent towards the inside of the beam to form a second bending head.

Through adopting above-mentioned technical scheme, to the inside concrete that pours into the concrete back first head and the second of buckling of roof beam into can with insert the inside concrete of opening stirrup, make opening stirrup and concrete connection fastening more, and then make whole roof beam structure more firm.

Preferably, the first bending head root is abutted with the two middle main ribs in the uppermost row, and the second bending head root is abutted with the two middle main ribs in the lowermost row.

Through adopting above-mentioned technical scheme, because the opening stirrup is compared in annular stirrup its free end at the opening part and easily receives external force and warp, buckle first root and main muscle overlap joint with first bending head and second, make the shape of opening stirrup keep that can be better.

Preferably, the first opening stirrups are arranged in the middle of the dense distribution position of the annular stirrups at one side, close to the wall, of the variable cross section of the beam; the second opening stirrup is arranged in the middle of the dense distribution position of the annular stirrups on one side, far away from the wall body, of the variable cross section of the beam.

Through adopting above-mentioned technical scheme, there are annular stirrup and opening stirrup in the intensive section to the annular stirrup is located opening stirrup both sides, and the annular stirrup is compared in opening stirrup and has better structural stability to the beam structure, and such design makes intensive section enough make things convenient for concrete placement, also can guarantee the near structural strength of roof beam variable cross section department.

Preferably, 2-3 first opening stirrups are arranged in the middle of the dense distribution position of the annular stirrups at one side of the variable cross section of the beam, which is close to the wall; the number of the second opening stirrups at the middle part of the dense distribution part of the annular stirrups at one side of the beam variable cross section, which is far away from the wall body, is 2-3.

Through adopting above-mentioned technical scheme, 2-3 opening stirrups are enough to make the concrete pipe insert inside the roof beam, if set up too much opening stirrups, can lead to roof beam structural strength to reduce.

Preferably, the free end of the short main rib at the variable cross section is bent downwards to form a bent rib, and the bent rib is obliquely downwards arranged for bypassing the long main rib.

Through adopting above-mentioned technical scheme, the muscle of buckling can be regarded as the sectional support reinforcement of roof beam variable cross section department, has improved the structural strength of roof beam section department like this.

Preferably, the free end of the bending rib far away from the short main rib extends to the lowest row of long main ribs and bends to the horizontal direction to form a third bending head, and the third bending head is in lap joint with the lowest row of long main ribs.

Through adopting above-mentioned technical scheme, the workman will be buckled the head with the third and the ligature of bundling for the long main muscle, make the both ends of buckling the muscle all have fixedly, make like this to buckle the muscle and receive external disturbance and cause the possibility that the position changes to reduce, the original shape of muscle is buckled in better maintenance.

Preferably, the main reinforcement, the opening stirrup and the annular stirrup are all made of twisted steel.

Through adopting above-mentioned technical scheme, evenly be provided with bellied screw thread on the twisted steel, increased the area of contact of main muscle, opening stirrup and annular hoop with the concrete like this, make main muscle, opening stirrup and annular hoop combine inseparabler with the concrete, increased the structural strength of roof beam structure.

In summary, the present application has the following technical effects:

1. through the arrangement of the opening stirrups, workers can stretch the concrete guide pipe and the vibrating rod into the beam, so that concrete can be poured more conveniently, and the beam structure strength is higher after concrete is dried;

2. through having set up the muscle of buckling, the section that makes roof beam variable cross section department has the reinforcing bar to support, makes the section structure more firm.

Drawings

FIG. 1 is a front view of a variable cross-section beam architecture of an embodiment of the present application;

FIG. 2 is a top view of a variable cross-section beam architecture of an embodiment of the present application;

fig. 3 is a left side view of a variable cross-section beam architecture of an embodiment of the present application.

In the figure, 1, a wall body; 2. a main rib; 21. a long main rib; 22. short main ribs; 3. a ring-shaped stirrup; 31. a first annular stirrup; 32. a second annular stirrup; 4. an open stirrup; 41. a first open stirrup; 42. a second open stirrup; 43. a first bending head; 44. a second bending head; 221. bending the ribs; 222. a third bending head; 5. cutting the surface; 6. a large cross-sectional section; 7. a small cross-sectional section; 8. a large cross-section dense area; 9. a small cross-section dense area; I-IV, short main ribs from one to four; V-XVI, and five to sixteen long main ribs.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, the application provides a with span variable cross section beam structure, including sixteen owner muscle 2, the 2 levels of sixteen owner muscle set up and be parallel to each other, the equal rigid coupling of the 2 one ends of sixteen owner muscle is on wall body 1, sixteen owner muscle 2 includes twelve long owner muscle 21 and four short owner muscle 22, short owner muscle 22 keeps away from 1 one end of wall body and forms the section 5 of roof beam behind concreting, the roof beam forms big cross-section 6 in section 5 one side that is close to wall body 1, the roof beam forms little cross-section 7 in one side that wall body 1 was kept away from to section 5. The periphery of the sixteen main reinforcements 2 is wrapped with a plurality of annular stirrups 3 and a plurality of opening stirrups 4, and the openings of the opening stirrups 4 face upwards.

People can build the completion back at the steel reinforcement cage, go deep into the inside slip casting of steel reinforcement cage with the concrete pipe from the opening part of opening stirrup 4, fine improvement like this lead to the problem that the 3 department concrete of annular stirrup is not filled in at 3 outside slip casting of annular stirrup.

Referring to fig. 2 and 3, when looking at the wall body 1 from one side of the main ribs 2 far away from the wall body 1, sixteen main ribs 2 are arranged in a 4 × 4 matrix form, and from left to right, from top to bottom, there are first to sixteenth main ribs 2, wherein, from one to four, there are short main ribs 22, and from five to sixteen, there are long main ribs 21. The annular stirrups 3 comprise first annular stirrups 31 and second annular stirrups 32, and the first annular stirrups 31 are wrapped on the peripheries of four short main reinforcements 22 and No. five, No. eight, No. nine, No. twelve and No. thirteen to No. sixteen long main reinforcements 21 of the large-section 6; the plurality of second annular stirrups 32 are wrapped on the periphery of the short main ribs 22 on the periphery of the small-section 7. The plurality of first annular stirrups 31 near the section 5 are closely arranged to form a dense area 8 with a large section, and the plurality of second annular stirrups 32 near the section 5 are closely arranged to form a dense area 9 with a small section. The plurality of open stirrups 4 comprise two first open stirrups 41 and two second open stirrups 42, the two first open stirrups 41 are wrapped on the periphery of the main reinforcement 2 at the middle section of the large-section dense area 8, and the two second open stirrups 42 are wrapped on the periphery of the main reinforcement 2 at the middle section of the small-section dense area 9. The plurality of first annular stirrups 31 and the two first opening stirrups 41 in the large-section dense area 8 are arranged at equal intervals, and the number of the first annular stirrups 31 positioned on one side, close to the wall body 1, of the first opening stirrups 41 is equal to the number of the first annular stirrups 31 positioned on one side, far away from the wall body 1, of the first opening stirrups 41; the plurality of second annular stirrups 32 and the two second open stirrups 42 of the small-section dense area 9 are arranged at equal intervals, and the number of the second annular stirrups 32 located on one side, close to the wall body 1, of the second open stirrups 42 is equal to the number of the second annular stirrups 32 located on one side, far away from the wall body 1, of the second open stirrups 42.

The two sides of the first opening stirrup 41 of the large-section dense area 8 are both provided with the first annular stirrup 31, the two sides of the second opening stirrup 42 of the small-section dense area 9 are both provided with the second annular stirrup 32, and the annular stirrups 3 are in a tail-end connected structure and have structural strength greater than that of the opening stirrups 4, so that the design ensures that the large-section dense area 8 and the small-section dense area 9 can deeply slip the concrete pipe and can also ensure the structural strength.

Referring to fig. 3, the free end of the opening of the first open stirrup 41 is bent inward the beam to form a first bending head 43, the first bending head 43 is vertically arranged, the roots of the first bending heads 43 at the two sides of the opening of the first open stirrup 41 are respectively lapped with the second and third short main ribs 22, and the free end of the first bending head 43 is located at the upper parts of the sixth and seventh long main ribs 21. The free end of the opening of the second open stirrup 42 is bent into a second bending head 44 towards the inside of the beam, the second bending head 44 is vertically arranged, the roots of the second bending heads 44 at two sides of the opening of the second open stirrup 42 are respectively lapped with the No. six short main ribs 22 and the No. seven short main ribs 22, and the free end of the second bending head 44 is positioned at the upper parts of the No. ten long main ribs 21 and the No. eleven long main ribs 21.

First head 43 of buckling after pouring into the concrete into the roof beam inside can with insert the inside concrete of opening stirrup 4, make opening stirrup 4 be connected more fastening with the concrete, buckle head 44 and the 2 overlap joints of main muscle in addition first head 43 and the second of buckling, make the shape of opening stirrup 4 can be better keep. The structure of the beam at the variable cross section is more stable.

Referring to fig. 1, the four short main ribs 22 are bent downwards away from the free end of the wall 1 to form a bent rib 221, the bent rib 221 obliquely and downwards bypasses the two rows of long main ribs 21 in the middle, the free end of the bent rib 221 is horizontally bent towards the wall 1 to form a third bending head 222, the third bending head 222 is lapped with the lowest row of long main ribs 21, and workers respectively bind the third bending head 222 and the lowest row of long main ribs 21 by using binding wires. After the concrete is poured, the bending ribs 221 can be used as support ribs of the section 5, so that the strength of the section 5 at the variable section of the beam is higher.

The first annular stirrup 31, the second annular stirrup 32, the first open stirrup 41, the second open stirrup 42, the long main reinforcement 21 and the short main reinforcement 22 are all made of twisted steel. Evenly be provided with bellied screw thread on the twisted steel, increased the area of contact of main muscle, opening stirrup and annular hoop with the concrete like this, make main muscle, opening stirrup and annular hoop combine inseparabler with the concrete, increased beam structure's structural strength.

To sum up, the application process of this application is: the long main reinforcement 21 and the short main reinforcement 22 are inserted into the wall body 1 in advance, then the annular stirrups 3 and the opening stirrups 4 are sleeved on the periphery of the main reinforcement 2, a plurality of reinforcing steel bars at the intersection of the reinforcing steel bars are bound by the binding wires, and then the grouting template is wrapped on the periphery of the reinforcing steel bar cage. Then the workman will concrete pipe from the opening part of opening stirrup 4 go deep into the inside concrete that pours into of roof beam into, wait that the concrete pours into to finish, will vibrate the stick and go deep into the inside vibration of concrete from the opening part of opening stirrup 4, shake out the inside bubble of concrete. And (5) after the concrete is solidified, removing the grouting template, and finishing the processing of the variable cross-section beam.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. A girder structure with the same span and variable cross section comprises a plurality of main ribs (2), wherein the main ribs (2) are parallel to each other and are vertically and fixedly connected to a wall body (1), and the main ribs (2) are arranged in a rectangular array; the main ribs (2) comprise long main ribs (21) and short main ribs (22), and the short main ribs (22) are positioned at the upper parts of the long main ribs (21);

the method is characterized in that: a plurality of annular stirrups (3) are wrapped outside the main reinforcements (2), the annular stirrups (3) close to the variable cross section are uniformly and densely distributed to form a dense section, and the annular stirrups (3) far away from the variable cross section are uniformly and dispersedly distributed to form a dispersed section;

the densely arranged parts of the annular stirrups (3) are provided with opening stirrups (4).

2. The same span variable section beam structure of claim 1, wherein: the opening stirrup (4) comprises a first opening stirrup (41) and a second opening stirrup (42), the first opening stirrup (41) is arranged on one side, close to the wall body (1), of the beam variable cross section, and the second opening stirrup (42) is arranged on one side, far away from the wall body (1), of the beam variable cross section;

the free end of the opening of the first opening stirrup (41) is bent towards the inside of the beam to form a first bending head (43), and the free end of the opening of the second opening stirrup (42) is bent towards the inside of the beam to form a second bending head (44).

3. The same span variable section beam structure of claim 2, wherein: the root of the first bending head (43) is abutted with the two main ribs (2) in the middle of the uppermost row, and the root of the second bending head (44) is abutted with the two main ribs (2) in the middle of the lowermost row.

4. The same span variable section beam structure of claim 3, wherein:

the first opening stirrups (41) are arranged in the middle of the dense distribution position of the annular stirrups (3) on one side of the beam variable cross section, which is close to the wall body (1);

the second opening stirrups (42) are arranged in the middle of the dense distribution position of the annular stirrups (3) on one side of the variable cross section of the beam, which is far away from the wall body (1).

5. The same span variable section beam structure of claim 4, wherein: 2-3 first opening stirrups (41) are arranged in the middle of the dense distribution position of the annular stirrups (3) at one side of the beam variable cross section close to the wall body (1);

the number of the second opening stirrups (42) in the middle of the dense distribution of the annular stirrups (3) at one side of the beam variable cross section, which is far away from the wall body (1), is 2-3.

6. The same span variable section beam structure of claim 1, wherein: the free end of the short main rib (22) at the variable cross section is bent downwards to form a bent rib (221), and the bent rib (221) can be obliquely downwards arranged around the long main rib (21).

7. The same span variable section beam structure of claim 6, wherein: the free end of the bending rib (221), which is far away from the short main rib (22), extends to the lowest row of the long main ribs (21) and is bent towards the horizontal direction to form a third bending head (222), and the third bending head (222) is overlapped with the lowest row of the long main ribs (21).

8. The same span variable section beam structure of claim 1, wherein: the main reinforcement (2) and the annular stirrup (3) are both made of twisted steel.