CN103276850A - Prefabricated housing for making reinforced concrete beams and mould thereof. - Google Patents

Abstract

The invention discloses a prefabricated shell and mold for making reinforced concrete beams. The mold comprises: an I-shaped inner baffle, a U-shaped outer baffle, an outer mold, an outer bottom mold, an inner mold, an inner bottom mold, and a connecting rod ; The I-shaped inner baffle is combined with the U-shaped outer baffle, and is arranged inside the two ends of the inner mold and the inner bottom mold. The inner mold is arranged on both sides of the inner bottom mold. The outside of the mold is provided with an outer mold, and the bottom of the inner bottom mold is provided with an outer mold. The prefabricated shell is U-shaped and equipped with stirrups. The side and bottom surfaces have inner ribs protruding inward and the inner surface is concave-convex. The stirrups are poured into the inner ribs, and the inner ribs are vertical ribs. Concave-convex shape with internal ribs, so that the U-shaped prefabricated shell can well ensure the reliable bonding and joint work of the post-cast core concrete and the prefabricated shell, with high firmness and reliability, simple structure, strong practicability, and high Strong promotion and application value.

Description

A prefabricated shell and mold for making reinforced concrete beams

technical field

The invention belongs to the technical field of building materials, and in particular relates to a prefabricated shell and a mold for making reinforced concrete beams.

Background technique

Prefabricated reinforced concrete structure is one of the important directions for the development of my country's building structure. It is conducive to the development of my country's building industrialization, improving production efficiency, saving energy, developing green and environmentally friendly buildings, and is conducive to improving and ensuring the quality of construction projects.

Scholars at home and abroad have done a lot of research work on prefabricated RC structures. Prefabricated concrete structures are widely used in Europe and the United States, mainly including two series of building prefabricated exterior walls and structural prefabricated components. A series of engineering standards and application manuals have been compiled. ; On the basis of learning from the successful experience of Europe and the United States, Japan has developed a variety of assembled integral RC structural forms such as prefabricated side panel cast-in-place core concrete, prefabricated beams, column shell cast-in-place core concrete; domestic research on assembly since the 1950s and 1960s At present, a variety of prefabricated structural forms have been applied and promoted in China, for example, the prefabricated large slab structure introduced in the 1960s; the integral prestressed fabricated slab-column system (IMS system) introduced from Yugoslavia in 1977 ; The prefabricated prestressed structure introduced by Japan; the prefabricated prestressed concrete assembled monolithic frame introduced by Nanjing Dadi Group from France in 1999, referred to as SCOPE, etc.

The prefabricated core cast-in-place assembly monolithic RC structure of the outer shell is a new type of assembled structure. Compared with the traditional assembled RC structure, it is characterized in that the protective layer of the main force-bearing components-beams and columns is prefabricated as the outer shell, while the core part The concrete and the concrete of the nodes are all cast-in-place, so that the structural performance is guaranteed.

Contents of the invention

The invention provides a prefabricated shell for making reinforced concrete beams, aiming to solve the problem that the prefabricated shell provided by the prior art cannot be reliably bonded and work together with the post-cast core concrete, and the firmness and reliability are relatively low. bad question.

The purpose of the present invention is to provide a prefabricated shell for making reinforced concrete beams, the prefabricated shell is U-shaped and equipped with stirrups, the side and bottom have internal ribs protruding inward and the inner surface is concave-convex, the stirrups Ribs are cast into the inner ribs.

Further, the inner ribs are vertical ribs.

Another object of the present invention is to provide a mold for preparing the prefabricated shell of a reinforced concrete beam, the mold comprising: an I-shaped inner baffle, a U-shaped outer baffle, an outer mold, an outer bottom mold, an inner mold, an inner Bottom mold, connecting rod,;

The I-shaped inner baffle is combined with the U-shaped outer baffle, and is arranged inside the two ends of the inner mold and the inner bottom mold, and the inner mold is arranged on both sides of the inner bottom mold. The inner mold is fixed as a whole through the connecting rod, the outer mold is arranged on the outer side of the inner mold, and the outer bottom mold is arranged on the lower part of the inner bottom mold.

Further, stirrups are arranged in the space formed by the outer mold, outer bottom mold and the inner mold, inner bottom mold.

Further, the outer surface of the inner bottom mold is provided with raised squares and horizontal grooves, and the outer surface of the inner mold is provided with raised squares and vertical grooves.

Further, the specific method of preparing the mold for making the prefabricated shell of the reinforced concrete beam is as follows:

Step 1: Use connecting rods to assemble the two inner molds into a whole, install the I-shaped inner baffle plate through bolts, put the stirrups one by one, install the inner bottom mold piece by piece, and install the stirrup clips;

Step 2, placing the outer base formwork on a level ground, and pouring the bottom concrete of the prefabricated shell;

Step 3, place the inner mold, inner bottom mold, I-shaped inner baffle, and U-shaped outer baffle with the stirrups installed on the concrete floor of the prefabricated shell just poured;

Step 4, assemble the U-shaped outer baffles at both ends and the outer molds on both sides;

Step five, pouring concrete in the space formed by the inner mold and the outer mold, and vibrating with a vibrating rod;

Step 6, remove the formwork after the initial setting of the concrete.

Further, in Step 5, when pouring concrete in the space formed by the inner mold and the outer mold, a flat vibrating rod is used for vibration.

Further, in step 6, the demoulding sequence is: take off the I-shaped inner baffle, take off the connecting rod, take off the inner mold piece by piece, take off the inner bottom mold, take off the U-shaped outer baffle at both ends, take off the The outer mold on both sides, take off the outer bottom mold.

The invention provides a prefabricated shell for making reinforced concrete beams. The prefabricated shell is U-shaped and equipped with stirrups. The side and bottom surfaces have inner ribs protruding inward and the inner surface is concave-convex. The stirrups are poured into the inner ribs. , the inner ribs are vertical ribs, and the inner surface of the U-shaped prefabricated shell is concave-convex with inner ribs, so that the U-shaped prefabricated shell can well ensure the reliable bonding and co-operation of the post-cast core concrete and the prefabricated shell, and the firmness and The utility model has the advantages of high reliability, simple structure, strong practicability, and strong promotion and application value.

Description of drawings

Fig. 1 is a schematic structural view of a prefabricated shell for making a reinforced concrete beam provided by an embodiment of the present invention;

Fig. 2 is the structural representation of the mold for making the prefabricated shell of the reinforced concrete beam provided by the embodiment of the present invention;

Fig. 3 is a flow chart of a specific method for preparing a prefabricated shell of a reinforced concrete beam using a mold provided by an embodiment of the present invention.

In the figure: 1. I-shaped inner baffle; 2. U-shaped outer baffle; 3. Outer mold; 4. Outer bottom mold; 5. Inner bottom mold; 6. Inner bottom mold; 7. Connecting rod; 8. Stirrup ; 9, inner rib; 10, clip.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clear, 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 invention.

Fig. 1 shows the structure of a prefabricated shell for making a reinforced concrete beam provided by an embodiment of the present invention.

The prefabricated shell is U-shaped and equipped with stirrups 8 , and inner ribs 9 protruding inward on the side and bottom surface and the inner surface is concave-convex, and the stirrups 8 are poured into the inner ribs 9 .

In the embodiment of the present invention, the inner ribs 9 are vertical ribs.

Fig. 2 shows the structure of the mold for making the prefabricated shell of the reinforced concrete beam provided by the embodiment of the present invention. For ease of illustration, only the parts relevant to the present invention are shown.

Another object of the present invention is to provide a mold for preparing the prefabricated shell of a reinforced concrete beam, the mold comprising: I-shaped inner baffle 1, U-shaped outer baffle 2, outer mold 3, outer bottom mold 4, Inner mold 5, inner bottom mold 6, connecting rod 7;

The I-shaped inner baffle plate 1 is combined with the U-shaped outer baffle plate 2, and is arranged inside the two ends of the inner mold 5 and the inner bottom mold 6. The inner mold 5 is arranged on both sides of the inner bottom mold 6, and the inner mold 5 passes through the connecting rod. 7 is fixed as a whole, the outside of the inner mold 5 is provided with the outer mold 3, and the bottom of the inner mold 6 is provided with the outer mold 4.

In the embodiment of the present invention, stirrups 8 are arranged in the space formed by the outer mold 3 , the outer bottom mold 4 , the inner mold 5 , and the inner bottom mold 6 .

In the embodiment of the present invention, the outer surface of the inner bottom mold 6 is provided with raised squares and horizontal grooves, and the outer surface of the inner mold 5 is provided with raised squares and vertical grooves.

Fig. 3 shows the implementation process of a specific method for preparing a prefabricated shell of a reinforced concrete beam using a mold provided by an embodiment of the present invention.

In the embodiment of the present invention, the specific method for preparing the mold for making the prefabricated shell of the reinforced concrete beam is as follows:

In step S301, use the connecting rod 7 to assemble the two inner molds 5 into a whole, install the I-shaped inner baffle plate 1 through bolts, put the stirrups 8 one by one, and install the inner bottom mold 6 piece by piece, and install the stirrup clips pieces 10;

In step S302, the outer bottom mold 4 is placed on a level ground, and the bottom concrete of the prefabricated shell is poured;

In step S303, the inner mold 5, the inner bottom mold 6, the I-shaped inner baffle 1, and the U-shaped outer baffle 2 with the stirrups 8 installed are placed on the concrete floor of the prefabricated shell just poured;

In step S304, the U-shaped outer baffles 2 at both ends and the outer molds 3 on both sides are assembled;

In step S305, pour concrete in the space formed by the inner mold 5 and the outer mold 3, and vibrate with a vibrating rod;

In step S306, the formwork is removed after the initial setting of the concrete.

In the embodiment of the present invention, in step S305, when pouring concrete in the space formed by the inner formwork 5 and the outer formwork 3, a flat vibrating rod is used for vibration.

In the embodiment of the present invention, in step S306, the mold removal sequence is: take off the I-shaped inner baffle plate 1, take off the connecting rod 7, take off the inner mold 5 piece by piece, take off the inner bottom mold 6, take off the two The U-shaped outer baffle plate 2 at the end, the outer mold 3 on both sides, and the outer bottom mold 4 are taken off.

The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The U-shaped prefabricated shell is made of ordinary concrete. The inner side of the U-shaped concrete shell is concave-convex, and there are inner ribs 9 protruding inward on the side and bottom. The distance from the outer surface of the U-shaped concrete shell is the thickness of the protective layer of the RC beam.

The mold for making the prefabricated shell with inner ribs 9 and concave-convex concrete U-shaped with stirrups 8 on the inner surface includes: outer mold 3, inner mold 5, outer bottom mold 4, inner bottom mold 6, U-shaped outer baffle plate 2, and I-shaped inner mold. Baffle 1, connecting rod 7, stirrup 8;

The mold can produce a prefabricated shell with inner ribs 9 and concave-convex concrete U-shaped with stirrups 8 on the inner surface;

The concave-convex shape of the inner surface of the prefabricated shell can effectively enhance the bond between the prefabricated shell and the post-cast concrete and ensure that they work together;

The I-shaped inner baffle plate 1 is connected with the inner mold 5 by bolts, which ensures the stability of the inner mold 5, and makes it easy to extract the connecting rod 7 in the inner mold 5;

The U-shaped outer baffle plate 2 is connected with the inner mold 5 and the outer mold 3 through bolts, which ensures that the inner mold 5 and the outer mold 3 form a whole, and also serves as the end template of the U-shaped prefabricated shell;

The outer surface of the inner mold 5 has several raised squares and vertical grooves, which can make the inner surface of the U-shaped prefabricated shell be concave-convex and have vertical ribs. The inner mold 5 is composed of multiple templates, which is convenient for demoulding;

The outer surface of the inner bottom mold 6 has some raised squares and horizontal grooves, which can make the inner bottom surface of the U-shaped prefabricated shell be concave-convex and have horizontal ribs;

The connecting rod 7 can assemble the inner mold 5 of the blocks into a whole, which is convenient for mold supporting.

Manufacturing process: 1. Assembly of the inner mold and installation of the stirrups 8. Use the connecting rod 7 to assemble the two pieces of the inner mold 5 into a whole, install the I-shaped inner baffle 1 through the bolts, put the stirrups 8 one by one and install them piece by piece The inner bottom mold 6 is installed with a stirrup clip 10;

2. Put the outer bottom mold 4 on a flat field, and then pour concrete at the bottom of the beam prefabricated shell;

3. Place the inner form with the stirrups 8 installed on the concrete floor of the beam prefabricated shell just poured;

4. Assemble the U-shaped outer baffles 2 at both ends and the outer molds 3 on both sides;

5. Pouring concrete on the side of the prefabricated shell of the beam: pour concrete in the space formed by the inner mold 5 and the outer mold 3, and vibrate with a vibrating rod. During the pounding process, on the one hand, the vibration and compaction should be ensured;

6. Demoulding: After the initial setting of the concrete, the formwork can be removed. The order of demoulding is: unscrew the connecting bolts and take off the I-shaped inner baffle 1, pull out the connecting rod 7, take off the inner mold 5 piece by piece, and take off the inner Bottom mold 6, unscrew the connecting bolts and take off the U-shaped outer baffles 2 at both ends, take off the outer molds 3 on both sides, and take off the outer bottom mold 4;

Advantages of the prefabricated shell with internal ribs 9 and concave-convex concrete U-shaped with stirrups 8 on the inner surface:

(1) The inner surface of the U-shaped prefabricated shell is concave-convex and has internal ribs 9, so that the present invention can well ensure the reliable bonding and co-operation of the post-cast core concrete and the prefabricated shell;

(2) The inner mold of the manufacturing process of the U-shaped prefabricated shell, the outer surface with several protruding squares can make the inner surface of the U-shaped prefabricated shell form concave-convex, and the grooves can form the inner rib 9, and also act as a positioning hoop The role of muscle 8.

The prefabricated shell for making reinforced concrete beams provided by the embodiment of the present invention, the prefabricated shell is U-shaped and equipped with stirrups 8, the side and bottom have internal ribs 9 protruding inward and the inner surface is concave-convex, and the stirrups 8 Pouring into the inner rib 9, the inner rib 9 is a vertical rib, and the inner surface of the U-shaped prefabricated shell is concave-convex with inner ribs 9, so that the U-shaped prefabricated shell can well ensure the reliable adhesion between the post-cast core concrete and the prefabricated shell The combination and work together have high firmness and reliability, simple structure, strong practicability, and strong promotion and application value.

The above 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 should be included in the protection scope of the present invention. Inside.

Claims (8)

1. A prefabricated shell for making reinforced concrete beams, characterized in that, the prefabricated shell is U-shaped and equipped with stirrups, the side and bottom surfaces have internal ribs protruding inward and the inner surface is concave-convex, and the stirrups Ribs are cast into the inner ribs. the 2. The prefabricated shell according to claim 1, wherein the inner ribs are vertical ribs. the 3. A mold for preparing a prefabricated shell for making reinforced concrete beams is characterized in that the mold comprises: I-shaped inner baffle plate, U-shaped outer baffle plate, outer mold, outer bottom mold, inner mold, inner bottom mold ,Connecting rod; The I-shaped inner baffle is combined with the U-shaped outer baffle, and is arranged inside the two ends of the inner mold and the inner bottom mold, and the inner mold is arranged on both sides of the inner bottom mold. The inner mold is fixed as a whole through the connecting rod, the outer mold is arranged on the outer side of the inner mold, and the outer bottom mold is arranged on the lower part of the inner bottom mold. the 4. The mold according to claim 3, characterized in that stirrups are arranged in the space formed by the outer mold, the outer bottom mold and the inner mold, the inner bottom mold. the 5. The mold according to claim 3, wherein the outer surface of the inner bottom mold is provided with raised squares and horizontal grooves, and the outer surface of the inner mold is provided with raised squares and vertical grooves. to the groove. the 6. mold as claimed in claim 3, is characterized in that, the specific method that this mold is prepared for making the prefabricated shell of reinforced concrete beam is: Step 1: Use connecting rods to assemble the two inner molds into a whole, install the I-shaped inner baffle plate through bolts, put on the stirrups one by one and install the inner bottom mold piece by piece, and install the stirrup clips; Step 2, place the outer bottom mold on a flat site, and pour the bottom concrete of the prefabricated shell; Step 3, place the inner mold, inner bottom mold, I-shaped inner baffle, and U-shaped outer baffle with the stirrups installed on the concrete floor of the prefabricated shell just poured; Step 4, assemble the U-shaped outer baffles at both ends and the outer molds on both sides; Step five, pour concrete in the space formed by the inner mold and the outer mold, and vibrate with a vibrating rod; Step 6, remove the formwork after the initial setting of the concrete. the 7. mold as claimed in claim 6, is characterized in that, in step 5, when pouring concrete in the space that inner mold and outer mold form, adopt flat vibrating bar to vibrate. the 8. The mold as claimed in claim 6, characterized in that, in step 6, the demoulding sequence is: take off the I-shaped inner baffle plate, take off the connecting rod, take off the inner mold piece by piece, and take off the inner bottom mold 1. Take off the U-shaped outer baffles at both ends, take off the outer molds on both sides, and take off the outer bottom mould. the

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