CN114319718B - Steel prestressed concrete composite beam and pouring mold thereof - Google Patents

Abstract

The invention belongs to the technical field of structural engineering, and specifically discloses a steel prestressed concrete composite beam and a pouring mold thereof. The pouring mold includes a fixed plate, a fixed sleeve, a stabilizing rod and a pouring sleeve. The two fixed plates protrude into the interior of the concrete base; the two fixed sleeves are arranged symmetrically on the inner side of the fixed plate, and the two stabilized bars are arranged symmetrically and obliquely on the fixed plate. between the fixed sleeve and the fixed sleeve; the pouring sleeve includes the internal pouring sleeve, the upper pouring sleeve and the beam casting sleeve, the inner casting sleeve runs through the fixed sleeve and its top extends to the outside of the fixed sleeve; the upper pouring sleeve is connected to the top of the inner pouring sleeve , the two sides of the upper pouring sleeve are provided with load-bearing plates; the beam casting sleeve is set on the outer side of the upper casting sleeve and is located on the upper side of the load-bearing plate. The pouring mold provided by the invention uses the pouring groove on the concrete base to fix the vertically placed fixing plate, and at the same time uses the stabilizing bar to connect the fixing sleeve and the fixing plate, which can effectively improve the stability of the base and the construction safety.

Description

A steel prestressed concrete composite beam and its pouring mold

technical field

The invention belongs to the technical field of structural engineering, and more specifically relates to a steel prestressed concrete composite beam and a pouring mold thereof.

Background technique

The beam formed by combining two different materials or different processes is called a composite beam, also known as a combined beam. The main girder of some composite girders is made of one material, and the bridge deck connecting the main girders is made of another material; at the same time, some composite girders are composed of prefabricated reinforced concrete girders or prestressed concrete girders and reinforced concrete decks poured in situ composite beams. In modern construction projects, there are more and more buildings that imitate the ancient Chinese traditional Huizhou architecture, and the shape of the construction beams used is different from that of traditional modern construction beams.

In the antique building, the combination method of building beams is complicated, and it is impossible to pour and combine them in steps, so that the building beams are heavier during the pouring process, the concrete is more, the air-drying speed is slow, and the construction efficiency is slow, and the pouring mold cannot be used separately. Disassembly, inconvenient for recycling.

Contents of the invention

In view of the above defects or improvement needs of the prior art, the present invention provides a steel prestressed concrete composite beam and its pouring mold, wherein the pouring mold optimizes the structure of the pouring sleeve, thereby using the method of splicing combined pouring The preparation of steel prestressed concrete composite beams can realize sequential pouring and composite molding, and the pouring molds can be easily disassembled separately, so that recycling can be realized.

In order to achieve the above object, the present invention proposes a casting mold for a steel prestressed concrete composite beam, which includes a fixed plate, a fixed sleeve, a stabilizing bar and a pouring sleeve, wherein: two fixed plates pass through the concrete base respectively The pouring groove extends into the interior of the concrete base; the two fixed sleeves are symmetrically arranged on the inner side of the fixed plate, and the two stabilizer bars are arranged symmetrically and obliquely between the fixed plate and the fixed sleeve, each One end of each stabilizer bar is connected to the fixed sleeve, and the other end is connected to the fixed plate; the pouring sleeve is fixed inside the fixed sleeve for placing steel bars and pouring concrete, and the pouring sleeve includes an inner A casting sleeve, an upper casting sleeve and a beam casting sleeve are provided, the inner casting sleeve runs through the fixed sleeve and its top extends to the outside of the fixed sleeve; the upper casting sleeve is connected to the top of the inner casting sleeve The two sides of the upper casting sleeve are provided with load-bearing plates; the beam casting sleeve is set on the outer side of the upper casting sleeve and is located on the upper side of the load-bearing plate.

As a further preference, pouring holes are opened on both sides of the top of the beam casting sleeve.

As a further preference, the reinforcing bars include a preset number of longitudinal reinforcing bars, first transverse reinforcing bars and second transverse reinforcing bars, wherein the longitudinal reinforcing bars pass through the beam pouring sleeve, the upper casting sleeve and the internal pouring successively along the vertical direction. set, and extend to the inside of the concrete base; the first transverse reinforcement is arranged horizontally inside the inner pouring sleeve and the upper pouring sleeve, and is evenly woven with the longitudinal reinforcement; the second transverse The reinforcing bars are arranged horizontally inside the casting sleeve of the beam and are evenly woven with the longitudinal reinforcing bars.

As a further preference, the fixed sleeve and the built-in casting sleeve are fixedly connected by first bolts and second bolts, wherein the first bolts are arranged under the stabilizer bar, and the second bolts are arranged under the above the stabilizer bar.

As a further preference, the inner casting sleeve and the upper casting sleeve are fixedly connected by third bolts.

As a further preference, the beam casting sleeve and the upper casting sleeve are fixedly connected by fourth bolts.

According to another aspect of the present invention, there is provided a steel prestressed concrete composite beam manufactured by using the above casting mold.

Generally speaking, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:

1. The present invention provides a pouring mold for a steel prestressed concrete composite beam, which fixes a vertically placed fixed plate by setting a pouring groove at the concrete base, and simultaneously uses a stabilizer bar to fix the fixed sleeve and the fixed plate connected to form a right-angled trapezoidal stable structure, thereby effectively improving the stability of the base and construction safety; at the same time, the invention also optimizes the structure of the pouring sleeve in the casting mold, and prepares the steel prestressed type by splicing and combined pouring. Concrete composite beams can be poured and combined in sequence, air-dried and molded quickly, and the pouring mold is easy to disassemble separately, which can realize recycling, has the advantages of convenient installation and improved construction efficiency, and is suitable for antique buildings;

2. In addition, the present invention can further improve the stability and safety of steel prestressed concrete composite beams by optimizing the composition and arrangement of steel bars.

Description of drawings

Fig. 1 is the cross-sectional view of the pouring mold of the steel prestressed concrete composite beam constructed according to the preferred embodiment of the present invention;

Fig. 2 is the front view of the pouring mold of the steel prestressed concrete composite beam constructed according to the preferred embodiment of the present invention.

Throughout the drawings, the same reference numerals are used to designate the same elements or structures, wherein:

1-concrete base, 2-fixing sleeve, 3-inner pouring sleeve, 4, first bolt, 5-pouring groove, 6-fixing plate, 7-stabilizing bar, 8-second bolt, 9-upper pouring sleeve, 10-the third bolt, 11-the longitudinal reinforcement, 12-the first transverse reinforcement, 13-the pouring hole, 14-the load-bearing plate, 15-beam casting sleeve, 16-the fourth bolt, 17-the second transverse reinforcement.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

As shown in Fig. 1, a casting mold of a steel prestressed concrete composite beam according to an embodiment of the present invention includes a fixed plate 6, a fixed sleeve 2, a stabilizing bar 7 and a pouring sleeve, wherein: the concrete base 1 is mass-produced after pouring The composite beam base has pouring grooves 5 on both sides, and two fixing plates 6 extend into the concrete base 1 through the pouring grooves 5 respectively, and are fixed by pouring; two fixing sleeves 2 are arranged symmetrically on the inner side of the fixing plate 6 , its front and back sides are all fixed by the first bolt 4, and the two sides of the two fixing sleeves 2 are fixedly connected with the fixing plate 6, the bottom of the fixing sleeve 2 is in contact with the top of the concrete base 1; the fixing plate 6 is connected with the concrete base 1 The opposite side of the fixed sleeve 2 is fixedly connected with a stabilizer rod 7, one end of each stabilizer rod 7 is connected with the fixed sleeve 2, and the other end is connected with the fixed plate 6; the pouring sleeve is fixed inside the fixed sleeve 2 for placing steel bars and pouring concrete to obtain steel prestressed concrete composite beams.

Further, the pouring sleeve includes an internal pouring sleeve 3, an upper pouring sleeve 9 and a beam casting sleeve 15. The internal pouring sleeve 3 runs through the fixed sleeve 2 and its top extends to the outside of the fixed sleeve 2. The internal pouring sleeve 3 and the fixed sleeve 2 The fixed connection is carried out by the first bolt 4 and the second bolt 8, wherein the first bolt 4 is arranged below the stabilizing bar 7, and the second bolt 8 is arranged above the stabilizing bar 7; The top is connected by the third bolt 10, the two sides of the upper pouring sleeve 9 are provided with load-bearing plates 14, and the front and back of the two upper casting sleeves 9 are fixedly connected by the second bolt 8; the beam casting sleeve 15 is set on the upper The outside of pouring cover 9, and be positioned at the upper side of bearing plate 14, is connected with last pouring cover 9 by the 4th bolt 16, and both sides of beam pouring cover 15 tops all offer pouring hole 13.

Further, the reinforcing bars include a preset number of longitudinal reinforcing bars 11, first transverse reinforcing bars 12 and second transverse reinforcing bars 17, wherein the longitudinal reinforcing bars 11 pass through the beam casting sleeve 15, the upper casting sleeve 9 and the inner casting sleeve 3 sequentially along the vertical direction, And extend to the inside of the concrete base 1, the top of the concrete base 1 is evenly opened with a through groove that matches the longitudinal reinforcement 11; the first transverse reinforcement 12 is arranged in the interior of the inner casting sleeve 3 and the upper casting sleeve 9 along the horizontal direction, and It is evenly woven with the longitudinal steel bars 11; the second transverse steel bar 17 is arranged inside the beam pouring sleeve 15 along the horizontal direction, and is evenly woven with the longitudinal steel bars 11.

The specific process of using the mold provided by the preferred embodiment of the present invention to prepare the steel prestressed concrete composite beam is as follows: placing the poured concrete base 1 on the ground, weaving the longitudinal steel bar 11 and the first transverse steel bar 12 into a reinforcement grid, and running through it The inside of the through groove at the top of the concrete base 1 . Place the fixed plate 6 and the fixed sleeve 2 welded together by the stabilizer bar 7 on the top of the concrete base 1, align the bottom of the fixed plate 6 with the fixed groove and place it in, and pass the front and back of the two fixed sleeves 2 through the first The bolts 4 are fixed, so that the fixing plate 6 is fixed on the top of the concrete base 1, and the fixing sleeve 2 and the fixing plate 6 welded by the stabilizing rod 7 form a right-angled trapezoidal stable structure. The two built-in pouring sleeves 3 are set respectively on the outside of the reinforcement grid and inside the two fixed sleeves 2, so that the bottom of the built-in pouring sleeves 3 is in contact with the top of the concrete base 1, and then the two are connected by the third bolt 10. Last pouring cover 9 is fixedly connected on the top of two interior setting pouring cover 3 respectively. The two upper pouring sets 9 are fixed together by the fourth bolt 16, and the concrete is poured into the inside of the upper pouring sets 9, and the concrete fills the inside of the built-in pouring sets 3 and the inside of the upper pouring sets 9 in turn. After filling, the second transverse reinforcement 17 is braided with the longitudinal reinforcement 11 above the upper pouring sleeve 9, and then the two beam casting sleeves 15 are respectively placed on the tops of the two load-bearing plates 14 and the second transverse reinforcement 17 and the longitudinal reinforcement. The both sides of the reinforcing mesh that steel bar 11 weaves, thus fully encloses reinforcing mesh. The two beam pouring sleeves 15 are fixed from the front and the back by the fourth bolt 16, and then through the pouring holes 13 on the top of the two beam casting sleeves 15, concrete is poured into the inside of the beam pouring sleeve 15. After filling, wait for the concrete After forming, the composite beam is assembled successfully. Through the combination of the fixed sleeve 2, the internal pouring sleeve 3, the upper pouring sleeve 9 and the beam pouring sleeve 15 in sequence, and then pouring, it is convenient for the concrete inside the building beam to be quickly air-dried and formed, and it is convenient for workers to install, and the construction efficiency is improved.

During the demoulding process, first unscrew the fourth bolt 16, and remove the two beam casting sleeves 15 from both sides; Take it off; then unscrew the first bolt 4, move the two fixed sleeves 2 up and down, drive the fixed plate 6 to move out from the inside of the fixed groove, and drive the built-in pouring sleeve 3 to move upward, and then the built-in pouring sleeve 3 and the fixed The cover 2 is separated and taken off to complete the demoulding of the composite beam, which is convenient for the pouring mold to be used for the next pouring.

It is easy for those skilled in the art to understand that 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, All should be included within the protection scope of the present invention.

Claims (6)

1. The utility model provides a casting mold of steel prestressing force type concrete composite beam, its characterized in that, this casting mold includes fixed plate (6), fixed cover (2), stabilizer bar (7) and pours the cover, wherein: the two fixing plates (6) respectively penetrate through the pouring grooves (5) in the concrete base (1) and extend into the concrete base (1); the two fixing sleeves (2) are symmetrically arranged on the inner side of the fixing plate (6), meanwhile, the two stabilizer bars (7) are symmetrically and obliquely arranged between the fixing plate (6) and the fixing sleeves (2), one end of each stabilizer bar (7) is connected with the fixing sleeve (2), and the other end of each stabilizer bar is connected with the fixing plate (6); the pouring sleeve is fixed inside the fixed sleeve (2) and used for placing steel bars and pouring concrete, the pouring sleeve comprises an inner pouring sleeve (3), an upper pouring sleeve (9) and a beam pouring sleeve (15), the inner pouring sleeve (3) penetrates through the fixed sleeve (2) and the top of the inner pouring sleeve extends to the outside of the fixed sleeve (2); the upper pouring sleeve (9) is connected with the top of the inner pouring sleeve (3), and bearing plates (14) are arranged on two sides of the upper pouring sleeve (9); the beam pouring sleeve (15) is sleeved on the outer side of the upper pouring sleeve (9) and is positioned on the upper side of the bearing plate (14);

the reinforcing steel bars comprise longitudinal reinforcing steel bars (11), first transverse reinforcing steel bars (12) and second transverse reinforcing steel bars (17) in a preset number, wherein the longitudinal reinforcing steel bars (11) sequentially penetrate through the beam pouring sleeve (15), the upper pouring sleeve (9) and the inner pouring sleeve (3) along the vertical direction and extend to the interior of the concrete base (1); the first transverse steel bar (12) is arranged inside the inner pouring sleeve (3) and the upper pouring sleeve (9) along the horizontal direction and is uniformly woven with the longitudinal steel bar (11); the second transverse steel bars (17) are arranged inside the beam pouring sleeve (15) along the horizontal direction and are uniformly woven with the longitudinal steel bars (11).

2. The pouring mold for the steel prestressed concrete composite beam according to claim 1, wherein the pouring holes (13) are formed on both sides of the top of the beam pouring sleeve (15).

3. The casting mold for steel prestressed concrete composite girders according to claim 1, characterized in that said securing sleeves (2) and built-in casting sleeves (3) are fixedly connected by first bolts (4) and second bolts (8), wherein said first bolts (4) are disposed below said stabilizer bar (7) and said second bolts (8) are disposed above said stabilizer bar (7).

4. The casting mold for a steel prestressed concrete composite girder according to claim 1, wherein the inner casting sleeve (3) is fixedly connected to the upper casting sleeve (9) by means of a third bolt (10).

5. Pouring mould for steel prestressed concrete composite girders according to any of claims 1 to 4, characterized in that said beam pouring jacket (15) is fixedly connected to said upper pouring jacket (9) by means of fourth bolts (16).

6. A steel prestressed concrete composite girder manufactured by using the casting mold according to any one of claims 1 to 5.

Images