CN204356996U - The U-shaped beam of prefabricated reinforced concrete with horizontal steel diaphragm - Google Patents

Abstract

A prefabricated reinforced concrete U-shaped beam with a transverse steel partition, including a high-strength concrete skeleton with a U-shaped groove in cross section, and a number of transverse steel partitions perpendicular to the longitudinal direction of the groove and vertical to the longitudinal direction of the groove are arranged in the high-strength concrete skeleton. A number of closed stirrups, the lower part of the stirrup is located in the groove wall and the bottom of the high-strength concrete skeleton, the upper part is suspended, the bottom of the stirrup is welded with a number of longitudinal bars parallel to the longitudinal direction of the groove, and the top of the stirrup is welded with several The second longitudinal bar parallel to the longitudinal direction of the groove, using the utility model, does not need to set up temporary supports, and is convenient for construction, and has small self-weight, strong bearing capacity, good corrosion resistance, simple structure, and convenient use.

Description

Precast reinforced concrete U-beams with transverse steel diaphragms

technical field

The utility model belongs to the technical field of buildings, relates to building components, in particular to a prefabricated reinforced concrete U-shaped beam with a transverse steel partition.

Background technique

In the modern reinforced concrete structure, the cast-in-place reinforced concrete structure is a structure formed by setting up formwork on site and integrally pouring. It has the advantages of good overall performance, high rigidity, and good seepage resistance, but there are also many shortcomings in the process of use. , such as form support and construction on site, there are many construction procedures, a large amount of labor, a large amount of materials, a long cycle, and high costs. Therefore, the prefabricated concrete structure can be developed. Compared with the cast-in-place concrete structure, the prefabricated structure can make the production of building components not affected and restricted by seasons, and realize industrial production. Since the components are poured and maintained in the factory, the quality of the components can be guaranteed, and the construction period is greatly shortened. Speeding up the construction progress saves a lot of formwork support, but it also has many shortcomings, such as poor overall performance, poor impermeability, unfavorable earthquake resistance, and certain deficiencies in use and aesthetics.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a prefabricated reinforced concrete U-shaped beam with a transverse steel partition, which does not need to erect temporary supports, is convenient for construction, and has a small self-weight, strong bearing capacity and corrosion resistance The utility model has the advantages of good performance, simple structure and convenient use.

In order to achieve the above object, the technical solution adopted by the utility model is:

A prefabricated reinforced concrete U-shaped beam with a transverse steel partition, comprising a high-strength concrete skeleton 1 with a U-shaped groove in cross section, and a number of transverse steel partitions 2 perpendicular to the longitudinal direction of the groove and a A number of closed stirrups 3 perpendicular to the longitudinal direction, the lower part of the stirrup 3 is located in the groove wall and the bottom of the high-strength concrete skeleton 1, the upper part is suspended, and the bottom of the stirrup 3 is welded with a number of longitudinal reinforcements parallel to the longitudinal direction of the groove. , the top of the stirrup 3 is welded with some longitudinal bars 24 parallel to the length direction of the groove.

The two ends of the groove of the high-strength concrete skeleton 1 are respectively provided with concrete rubber mandrels.

The transverse steel partitions 2 have welded end plates.

Compared with the prior art, the beneficial effects of the utility model are:

1) Each component can be prefabricated, used in combination on site, and poured integrally with the floor and columns. It can not only ensure the integrity, but also greatly improve the anti-seismic performance.

2) The U-shaped frame can act as a formwork, and the U-shaped frame made of high-strength concrete has great rigidity, so there is no need to erect temporary supports, and the construction is convenient.

3) The hoisting is convenient. Due to the U-shaped cross-section, the amount of concrete is reduced, and the weight of the prefabricated components is greatly reduced; at the same time, the transverse steel partition prevents damage caused by excessive lateral bending moments during the hoisting process.

4) Compared with the traditional assembled structure, the overall performance is better. After the U-shaped frame is assembled, beams, slabs and columns are poured together. The anti-seepage and anti-seismic properties have been greatly improved, and at the same time, it also meets the requirements for aesthetics.

5) The design is flexible. The horizontal steel partitions used can effectively prevent the longitudinal bonding and slippage of the old and new concrete. At the same time, high-strength concrete is used in the prefabricated part, and ordinary-strength concrete is used in the cast-in-place part. The strength grades of the two concretes can be different. The choice of concrete for the floor slab is not limited by the strength of the concrete in the beam, and various types of concrete with different characteristics can be selected to effectively improve the functional requirements of the structure.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and examples.

The utility model is a prefabricated reinforced concrete U-shaped beam with a transverse steel partition, which includes a high-strength concrete skeleton 1 with a U-shaped groove in the cross section, and several transverse steel partitions 2 perpendicular to the long direction of the groove are arranged in the high-strength concrete skeleton 1 And a number of closed stirrups 3 perpendicular to the length direction of the groove, and a welded end plate on the transverse steel partition 2. The lower part of the stirrup 3 is located in the groove wall and the bottom of the high-strength concrete skeleton 1, and the upper part is suspended in the air. The bottom of the stirrup 3 is welded with a number of longitudinal bars 5 parallel to the longitudinal direction of the groove, and the top of the stirrup 3 is welded with a number of vertical bars 5 parallel to the groove. Longitudinally parallel longitudinal ribs 24. The two ends of the groove of the high-strength concrete skeleton 1 are respectively provided with concrete rubber mandrels.

The high-strength concrete skeleton 1 of the utility model, the transverse steel partition 2, the stirrup 3, the first longitudinal bar 5 and the second longitudinal bar 4 are prefabricated in the factory at one time, and after the stirrup 3 is welded with the first longitudinal bar 5 and the second longitudinal bar 4, The lower part of the stirrup 3 is embedded in the high-strength concrete skeleton 1 together with the longitudinal reinforcement 1 5 and the transverse steel partition 2 . The formed skeleton is transported to the construction site to be spliced with columns and slabs, and concrete is poured on the hollow abdomen of the U-shaped skeleton and its upper floor.

For the convenience of processing, the quantity and spacing of the transverse steel partitions 2 can be evenly arranged according to a certain size.

The prefabricated high-strength concrete steel skeleton part of the beam with transverse steel partitions and U-shaped webs used in the utility model includes the longitudinal reinforcement in the lower part of the beam, the stirrup in the middle of the beam and the high-strength concrete in the lower part. The beam construction and installation is completed by directly connecting the steel bars of the prefabricated part with the columns, and then pouring the concrete floor slab. There is no need to bind steel bars, support formwork, remove formwork and erect temporary supports under beams on site. If the floor slab adopts a reinforced slab-concrete composite slab or a laminated floor slab, there is no need for formwork support, formwork removal and temporary support during the entire floor construction process, and the on-site construction procedures, construction materials and construction hours are greatly reduced.

The utility model has good construction quality, the web part of the beam is prefabricated in the factory, the concrete is poured and vibrated conveniently and can be cured by steam, the concrete construction quality is easy to control, and the concrete transverse steel partition used in the U-shaped groove can effectively prevent old and new Longitudinal shear slip between concrete, especially when high-strength concrete is used, has more obvious advantages in construction quality control.

In the utility model, high-strength concrete can be used in the prefabricated part of the beam, and ordinary-strength concrete can be used in the cast-in-place part, and the strength grades of the two concretes can be different. Therefore, in practical engineering applications, the choice of floor concrete can be independent of the strength of the concrete in the beam, and various types of concrete with different characteristics can be selected to effectively improve the functional requirements of the structure. For example, for cast-in-place concrete and floor concrete, in order to save resources and energy, recycled concrete can be used; in order to reduce the weight of the floor, lightweight aggregate concrete can be used; in order to improve the vibration and sound insulation effect of the floor, rubber concrete or sound-absorbing concrete can be used Concrete; in order to improve the thermal insulation performance of the floor, thermal insulation concrete can be used.

Claims (3)

1. the U-shaped beam of the prefabricated reinforced concrete with horizontal steel diaphragm, it is characterized in that, comprise the high-strength concrete skeleton (1) that cross section is U-lag, the some horizontal steel diaphragm (2) vertical with flute length direction and the some closed stirrup (3) vertical with flute length direction is provided with in high-strength concrete skeleton (1), the bottom of stirrup (3) is arranged in cell wall and the bottom land of high-strength concrete skeleton (1), top is unsettled, the bottom welding of stirrup (3) has some vertical muscle one (5) parallel with flute length direction, the welded top of stirrup (3) has some vertical muscle two (4) parallel with flute length direction.

2. the U-shaped beam of the prefabricated reinforced concrete according to claim 1 with horizontal steel diaphragm, is characterized in that, the groove two ends of described high-strength concrete skeleton (1) are respectively arranged with concrete rubber core.

3. the U-shaped beam of the prefabricated reinforced concrete according to claim 1 with horizontal steel diaphragm, is characterized in that, described horizontal steel diaphragm (2) is with welded end plate.