CN204456656U - A kind of welding stirrup coordinates rod iron combined steel and concrete column - Google Patents

Abstract

The utility model discloses a steel-reinforced concrete column with welded stirrups matched with steel bars, which comprises several steel bars, several welded stirrups and concrete; the plurality of steel bars are longitudinally arranged to form longitudinal bars; the welded stirrups consist of A frame made of bent and welded steel bars. The steel bar limbs set inside the frame are arranged to cross each other. The overlapping joints between the steel bar legs forming the frame are butt welded. T-shaped welding is adopted at the overlap with the surrounding frame, and several welded stirrups are set on the longitudinal bars and the welded stirrups are perpendicular to the longitudinal bars. The connection, the longitudinal bars and the welded stirrups together form a steel cage skeleton, and the concrete is poured on the steel cage skeleton. The utility model saves steel materials, can give full play to the respective characteristics of steel and concrete, reduces the column cross section, and facilitates construction at the same time.

Description

A steel-reinforced concrete column with welded stirrups and steel rods

technical field

The utility model relates to a steel-reinforced concrete column with welded stirrups matched with steel rods.

Background technique

With the continuous development of building materials, design theories and design methods, high-rise and super high-rise building structures have sprung up on a large scale. Based on many advantages such as high bearing capacity and good ductility, the steel reinforced concrete structure can fully meet the requirements of "weight loss" (oversized section size) and the limit value of the axial compression ratio of the concrete column, which has promoted the use of steel reinforced concrete in the last 20 years However, with the deepening of research, more and more problems have been exposed in the engineering application of steel reinforced concrete. 1. Insufficient codes and design theories: Although a lot of research has been done on steel reinforced concrete structures at home and abroad, factors such as section form, steel matching form, steel matching ratio, hoop ratio, axial compression ratio, and shear-span ratio have not been established. The relationship between ductility and bearing capacity, and the calculation theory of existing steel concrete, the views of many scholars at home and abroad are not consistent, and the calculation methods are also different. 2. The structure and connection of steel bars are complex: the reinforcement and connection structures of steel reinforced concrete structures are relatively complicated, and full and careful consideration must be given in the engineering design stage, otherwise it will make the construction of the project very difficult. 3. Difficulty in construction: The reinforcement structure in the joint area is extremely complex, time-consuming and labor-intensive, difficult to weld at high altitude, difficult to guarantee quality, complicated concrete pouring, and difficult to vibrate. 4. The cost is expensive. In order to solve the above problems, it is necessary to find a concrete column with improved ductility and bearing capacity, convenient construction, and economical feasibility.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems and provide a steel-reinforced concrete column with welded stirrups combined with steel rods, which can not only improve ductility and bearing capacity, but also facilitate construction and is economically feasible.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a steel reinforced concrete column with welded stirrups combined with steel bars, which is characterized in that it includes several steel bars (1), several welded stirrups (2) and concrete; A number of steel bars (1) are arranged longitudinally to form longitudinal bars; the welded stirrups (2) include a frame made of bent and welded steel bars, and the legs of the bars set inside the frame are arranged to cross each other to form a frame Butt welding is adopted for the overlapping joints between the reinforcement limbs of the frame, T-shaped welding is adopted for the overlapping joints between the reinforcement limbs arranged inside the enclosure and the enclosure frame, and several welding stirrups are set on the longitudinal reinforcements (2) And the welded stirrups (2) are perpendicular to the longitudinal bars, the horizontal bars of the welded stirrups (2) are connected to the steel rods (1), and the longitudinal bars and the welded stirrups (2) are A steel cage skeleton is formed, and the concrete is poured on the steel cage skeleton.

Preferably: the shape of the surrounding frame is rectangular, circular, L-shaped, cross-shaped or special-shaped.

Preferably: the T-shaped welding and the butt welding adopt resistance projection welding or resistance spot welding.

Preferably: the steel bar limbs of the welded stirrup (2) are connected with the steel bar by binding with wires.

Preferably: the steel rod (1) is a round steel, and an anti-slip member is arranged on its outer side, and the anti-slip member is a stud.

Preferably: the steel bar (1) adopts rebar.

Preferably: the diameter of the steel rod (1) is 28-60mm.

Compared with the prior art, the utility model has the following beneficial effects:

(1) Save steel: the utility model uses welded stirrups to save the hook anchorage section and the repeated section of composite stirrups of traditional composite stirrups, saving more than 20% of steel on average.

(2) Give full play to the respective characteristics of steel and concrete: the steel rods in the utility model can improve the ductility and bearing capacity of the concrete columns, while the surrounding concrete has better fire resistance and corrosion resistance, which can fully protect the steel rods inside the concrete.

(3) Reduce the section of the column: the utility model adopts steel rods, which can significantly improve the ductility and bearing capacity of the concrete column compared with the traditional reinforced concrete column, increase the use space of the internal building, reduce the weight of the building, and improve the seismic capacity of the concrete column .

(4) Convenient construction: The utility model does not have the problem of complex crossing of steel bars in the joint area of the steel concrete beam and column, and the problem of perforating the steel, which can quickly improve the construction efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a steel-reinforced concrete column with welded stirrups and steel bars in the embodiment.

Fig. 2 is a structural schematic diagram of an anti-skid member provided outside the steel bar in the embodiment when round steel is used.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Referring to Fig. 1 and Fig. 2, a steel-reinforced concrete column with welded stirrups fitted with steel bars includes several steel bars 1, several welded stirrups 2, and concrete; the several steel bars 1 are longitudinally arranged to form longitudinal bars; the The welded stirrup 2 includes a surrounding frame formed by bending and welding steel bars. The reinforcing bar limbs arranged inside the surrounding frame are arranged to cross each other without welding. T-shaped welding is adopted at the joints of the reinforcement limbs inside the frame and the frame, and a number of welded stirrups 2 are set on the longitudinal bars, and the welded stirrups 2 are perpendicular to the longitudinal bars (the welded stirrups are vertical to the longitudinal bars). Steel rods are placed inside and at the edge), the horizontal reinforcement limbs of the welded stirrups 2 are connected to the steel rods 1, the longitudinal bars and the welded stirrups 2 together form a steel cage skeleton, and the concrete is poured in on the steel cage skeleton.

The T-shaped welding and butt welding adopt other resistance welding forms such as resistance projection welding or resistance spot welding. Specifically, T-shaped welding is used at the laps between the limbs of the outer reinforcement of the welded stirrup 2 (T-shaped welding point 3 is an example), and butt welding is used where the peripheral reinforcement forms a closed loop (butt welding point 4 is an example). The welded stirrup 2 is composed of a piece of welded stirrup mesh, rather than a multi-layer composite welded stirrup composed of multiple sets of welded double-leg stirrups or single-leg stirrups. Welding indentation depth: The indentation depth of butt welding points is not less than 50%, and the indentation depth of T-shaped welding points is not less than 40%. The form of the welding stirrup 2 can adopt rectangle, circle, L shape, cross shape and special shape. If steel bar 1 is selected round steel for use, its outside is provided with anti-skid member 5, and described anti-skid member 5 adopts stud. The steel rod 1 is made of threaded steel or round steel, and the steel rod adopts a diameter of 28-60mm. The steel bar limbs of the welded stirrup 2 and the steel bar 1 are connected by tying wires.

In the embodiment, the cross-sectional shape of the welded stirrups 2 is rectangular, and the construction process is as follows: first, insert an accurate number of welded stirrups 2 between the steel bars 1; secondly, connect the steel bars 1, using a mechanical connection sleeve or In the form of welding, the steel rod is lengthened to a suitable length (refer to the existing technology, no detailed description is given); then the bottom welding stirrups 2 are sequentially raised to the corresponding height according to different spacing, and the corresponding binding is carried out with wire binding to form a reinforcement cage Skeleton; install formwork on the outside of the steel cage skeleton, and leave a suitable gap between the steel cage skeleton and the formwork to form a protective layer; pour concrete, and form it into a stirrup with steel rod steel reinforced concrete column at one time.

The above descriptions are only preferred implementations of the present utility model, and the scope of protection of the present utility model is not limited to the above-mentioned implementations. All technical solutions belonging to the principle of the utility model belong to the protection scope of the utility model. For those skilled in the art, some improvements made on the premise of not departing from the principle of the utility model, these improvements should also be regarded as the protection scope of the utility model.

Claims (7)

1. A steel-reinforced concrete column with welded stirrups fitted with steel bars, characterized in that it comprises several steel bars (1), several welded stirrups (2) and concrete; the several steel bars (1) are longitudinally arranged to form Longitudinal reinforcement; the welded stirrups (2) include a frame made of bent and welded steel bars, the legs of the bars inside the frame are arranged to cross each other, and the overlapping parts of the legs of the bars forming the frame are butt joints Welding: T-shaped welding is used at the joints between the reinforcement limbs and the frame inside the frame, and a number of welded stirrups (2) are set on the longitudinal bars, and the welded stirrups (2) are connected to the longitudinal bars. The bars are vertical, the horizontal bars of the welded stirrups (2) are connected to the steel rods (1), the longitudinal bars and the welded stirrups (2) together form a steel cage skeleton, and the concrete is poured on the on the steel cage skeleton. 2. The steel-reinforced concrete column with welded stirrups combined with steel rods according to claim 1, characterized in that: the shape of the surrounding frame is a rectangle, a circle, an L shape, a cross shape or a special shape. 3. The steel-reinforced concrete column with welded stirrups combined with steel rods according to claim 1, characterized in that: the T-shaped welding and the butt welding adopt resistance projection welding or resistance spot welding. 4. The steel-reinforced concrete column with welded stirrups combined with steel rods according to claim 1, characterized in that: the steel bar limbs of the welded stirrups (2) and the steel rods are connected by wire binding. 5. The steel-reinforced concrete column with welded stirrups combined with steel rods according to claim 1, characterized in that: the steel rod (1) is a round steel, and an anti-slip member is arranged on its outer side, and the anti-slip member is a stud. 6. The steel-reinforced concrete column with welded stirrups combined with steel rods according to claim 1, characterized in that: the steel rods (1) are threaded steel. 7. The steel reinforced concrete column with welded stirrup combined with steel rods according to claim 1, 5 or 6, characterized in that: the steel rod (1) has a diameter of 28-60 mm.