CN203160800U - Lattice type steel rib concrete-filled steel tube composite component - Google Patents

Abstract

A lattice-type steel-reinforced steel tube concrete composite member, which mainly includes a hollow ring steel pipe and concrete injected into the ring steel pipe. The inner wall of the ring steel pipe is evenly spaced with longitudinally long stiffening plates, which can improve the bending resistance. At the same time, it is used for the connection between the steel pipe and the steel frame; the horizontal stiffening plate is arranged at a certain height along the upper and lower sides of the ring steel pipe to enhance the joint work performance of the concrete and the steel pipe. The structural steel frame is connected with the longitudinal stiffening plate by bolts through the connecting plate; the circular steel rotating shaft is arranged at a certain distance in the lattice steel frame to facilitate the concrete pouring construction; the upper inner wall of the ring steel pipe is arranged with The safety protection circle and the station platform provide space for convenient construction; it has the characteristics of simple and reasonable structure, convenient and reliable use, and can improve processing and construction efficiency.

Description

A lattice-type steel-reinforced steel tube concrete composite member

technical field

The utility model relates to a component form of a steel pipe tower of an overhead power transmission line, more specifically, a composite component form of the main material of a steel pipe tower body.

Background technique

In towering and long-span structures, columns need to bear high axial force. In order to meet the load-bearing strength and ductility of columns, steel-concrete composite members are widely used in engineering. Common steel-concrete columns mainly include steel-reinforced concrete columns and steel-filled concrete columns.

Steel-reinforced concrete column, the steel frame is wrapped in concrete, which improves the bearing capacity and ductility of the column, and the concrete increases the stiffness, local buckling resistance and overall buckling capacity of the steel frame at the same time. Solid belly member.

Concrete-filled steel tube columns are composite members formed by pouring concrete into closed steel tubes. In the composite structure, not only the compressive strength of the three-way compression core concrete is significantly improved, but also the local buckling and overall buckling of the thin-walled steel pipe are suppressed and delayed during the compression process, and the bearing capacity of the steel pipe wall is also greatly enhanced. . However, as the external load increases, if the diameter of the steel pipe is increased blindly, the steel content of the section will decrease, and the ductility of the member cannot meet the design requirements.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a lattice structure that has a larger load-bearing capacity and better ductility than the traditional component form and can meet the structural design requirements and is applicable to large-load multi-circuit transmission towers Steel reinforced steel tube concrete composite member.

The utility model is realized through the following technical scheme: it mainly includes a hollow ring steel pipe and concrete poured into the ring steel pipe, the inner wall of the ring steel pipe is evenly spaced with longitudinally long stiffening plates, which can improve the bending resistance. At the same time, it is used for the connection between the steel pipe and the steel frame; the horizontal stiffening plate is arranged at a certain height along the upper and lower intervals in the ring steel pipe to enhance the joint work performance of the concrete and the steel pipe. The structural steel frame is connected with the longitudinal stiffener by bolts through the connecting plate.

The lattice-type steel frame is arranged with round steel rotating shafts at a certain distance to facilitate concrete pouring construction; the upper inner wall of the ring steel pipe is arranged with a safety protection ring and a station platform to provide space for convenient construction.

With the continuous upgrading of the construction scale of transmission lines, the application of steel pipe towers in large-span and UHV transmission lines is becoming more and more extensive. Based on the research results and advantages and disadvantages of concrete columns, a new type of composite structure is proposed by combining the two. The steel frame is embedded in the steel tube concrete column, named steel frame-steel tube concrete column. The efficiency of processing and construction does not use the conventional solid-belly steel frame, but the lattice steel frame; thus the utility model has the characteristics of simple and reasonable structure, convenient and reliable use, and can improve processing and construction efficiency.

Description of drawings

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

Fig. 2 is a schematic diagram of the lattice steel frame structure described in the present invention.

Fig. 3 is a schematic diagram of the cross-sectional structure of A-A in Fig. 1 .

Fig. 4 is a schematic diagram of the B-B cross-sectional structure in Fig. 1 .

Fig. 5 is a schematic cross-sectional structure diagram of C-C in Fig. 1 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings: as shown in Figures 1, 2, 3, 4, and 5, the utility model mainly includes a hollow ring steel pipe 1 and the concrete 2 injected in the ring steel pipe. Longitudinal stiffening plates 4 are evenly spaced on the inner wall of the ring steel pipe 1, transverse stiffening plates 5 are arranged at a certain height along the upper and lower sides of the ring steel pipe 1, and lattice steel frames 3 are arranged inside the ring steel pipe 1. The bone 3 is bolted to the longitudinal stiffener 4 through the connecting plate 6 .

The lattice-type steel frame 3 is arranged with a round steel shaft 9 at a certain distance to facilitate the construction of the pouring concrete 2; the upper inner wall of the ring steel pipe 1 is arranged with a safety ring 7 and a station platform 8 .

When the steel pipe member is processed, the longitudinal and transverse ribs are pre-welded on the inner wall, and at the same time, the safety protection ring and the station platform are installed at appropriate positions. When the components are assembled on site, the lattice steel frame is first assembled as a whole, and the above-mentioned steel pipe components are hoisted in place, then the two are connected by bolts through the connecting plate, and finally concrete is poured to form the whole.

It should be noted that what is listed above are only specific embodiments of the present invention. Apparently, the utility model is not limited to the above embodiments, and many variations are possible. All deformations that a person skilled in the art can derive or associate directly from the content disclosed in the utility model shall be considered as the protection scope of the utility model.

Claims (2)

1. A lattice-type steel-reinforced steel-filled steel tube concrete composite member, which mainly includes a hollow ring steel pipe and concrete injected into the ring steel pipe, and is characterized in that the inner wall of the ring steel pipe (1) is evenly spaced with vertically long The stiffening plate (4), the horizontal stiffening plate (5) is arranged at a certain height along the upper and lower intervals in the ring steel pipe (1), and the lattice steel frame (3) is arranged inside the ring steel pipe (1), and the lattice steel frame ( 3) Connect the longitudinal stiffener (4) with bolts through the connecting plate (6). 2. The lattice-type steel-reinforced steel-filled steel tube concrete composite member according to claim 1, characterized in that the lattice-type steel frame (3) is arranged with round steel bars at a certain distance to facilitate the construction of pouring concrete (2) A rotating shaft (9); a safety ring (7) and a station platform (8) are arranged on the upper inner wall of the ring steel pipe (1).

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