CN204252392U - Corrugated steel web-steel pipe concrete flange combined section L-shaped column - Google Patents

Abstract

The utility model discloses an L-shaped column with corrugated steel web-steel tube concrete flange combined section, which comprises flat steel plate flange one, flat steel plate flange two, flat steel plate flange three, steel web one and steel web Plate 2, one side of the steel web 2 is vertically connected to the edge of the steel web 1 to form an L-shaped cross-section special-shaped steel column, and the steel web 1 and steel web 2 are corrugated steel The web, the corrugated steel column web is in the form of a curve, broken line or trapezoid, and the corrugated steel web has periodically repeated corrugated sides perpendicular to the length direction of the member. The flat steel plate flange one, flat steel plate flange two, The third flange of the flat steel plate is a steel pipe concrete flange, which includes a steel pipe and the concrete inside it, and the concrete is self-compacting concrete. The utility model improves the stress performance and fire resistance of the existing L-shaped cross-section special-shaped steel column, and does not significantly increase the comprehensive cost of the project, so that it can be widely used in projects.

Description

L-shaped column with corrugated steel web-concrete filled steel tube flange composite section

technical field

The utility model relates to the technical field of a novel building structure, in particular to an L-shaped column with a combined section of a corrugated steel web-concrete steel tube flange.

Background technique

In the modern construction of multi-high-rise steel structure residences, the advantages of special-shaped column structures have become more and more prominent, and their status has become increasingly prominent. In recent years, they have been highly valued by academic circles and engineering technicians at home and abroad. The application is also more and more extensive.

In the actual engineering of multi-story steel structure residences, the corner columns usually adopt traditional flat-web solid-web L-shaped cross-section special-shaped steel columns or truss-type L-shaped cross-section special-shaped steel columns. In order to meet the requirements of compressive bending performance, larger section size, especially web size, is usually required. If the L-shaped cross-section special-shaped steel column with flat web and solid web is selected, the shear strength of the web will have a lot of surplus. value, usually need to increase the thickness of its web, which will lead to increased steel consumption, increased project cost, thereby increasing the overall cost of the project; In addition to the limited performance and overall stability, the truss-type web members need to be welded with plates or strips. The construction is relatively cumbersome, and the connection workload is large, which increases the construction cost and the overall cost of the project. Moreover, when the bending moment effect is large, the flanges of the above two L-shaped cross-section special-shaped steel columns may enter the failure state prematurely, causing the steel columns to quickly lose their resistance; at the same time, the above two steel columns are all pure steel structure, and its fire resistance is poor.

Utility model content

The purpose of the utility model is to provide a corrugated steel web in order to improve the mechanical performance and fire resistance of the existing L-shaped cross-section special-shaped steel column without significantly increasing the comprehensive cost of the project so that it can be widely used in engineering. Slab-concrete filled steel tube flange composite section L-shaped column.

The technical scheme adopted by the utility model is: a corrugated steel web-concrete steel tube flange combined section L-shaped column, including flat steel plate flange one, flat steel plate flange two, flat steel plate flange three, steel web one and the second steel web, one side of the second steel web is vertically connected to the edge of the first steel web to form an L-shaped cross-section special-shaped steel column, the first steel web and the steel web The second is the corrugated steel web, the form of the corrugated steel column web is curved, broken line or trapezoidal, and the corrugated steel web is periodically repeated. Steel plate flange 1, flat steel plate flange 2, and flat steel plate flange 3 are welded at the midpoint of their width, and the flat steel plate flange 1, flat steel plate flange 2, and flat steel plate flange 3 are steel pipe concrete flanges, and The edge includes the steel pipe and the concrete inside it, and the concrete is self-compacting concrete.

The section of the utility model is composed of corrugated steel webs and steel tube concrete flanges. The specific formation method is: the corrugated steel web is welded with the steel pipe of the steel pipe concrete flange, and finally the concrete is poured into the steel pipe to form a combination. The basic structure of the composite column: it can be welded by one corrugated web H-shaped composite column and one corrugated web T-shaped composite column or by welding two corrugated steel webs and three steel pipe concrete flanges. When the corrugated steel web and the CFST flange are assembled into an L-shaped composite column with a corrugated web, the connection point between the corrugated steel web and the CFST flange should be located at the midpoint of the width of the CFST flange. In the section composition, the welding process and welding quality will directly affect the performance of the steel column. Therefore, the utility model needs to ensure a good welding process (pair welding process can be used). The flange is composed of steel pipe and concrete. Due to the limited space in the steel pipe, it is inconvenient to vibrate when pouring concrete, so self-compacting concrete should be used.

The arrangement mode of the corrugated web of the utility model: the periodically repeated corrugated side of the web is perpendicular to the length direction of the component, and the non-corrugated side of the web is welded to the flange of the steel tube concrete. The basic feature of the utility model is to improve the mechanical performance of the existing special-shaped steel column with L-shaped section in a relatively economical way. The corrugated web of the utility model can play the role of an equivalent longitudinal stiffener, which can improve the local stability of the web and the rigidity and stable bearing capacity of the steel column; concrete is poured into the flange steel pipe to improve the local stability of the steel pipe. Stability and fire resistance. Therefore, the utility model has reasonable cross-section structure, good mechanical properties, good fire resistance and anti-corrosion performance, simple structure, convenient and fast manufacturing and processing, labor and material saving, and low engineering cost.

Beneficial effects: the utility model has a reasonable cross-section structure, good mechanical properties, beautiful appearance and economy, remarkable benefits, good fire resistance, and broad development prospects;

The web of the utility model adopts the corrugated web of the placed mode, which constitutes an equivalent longitudinal stiffener effect, which can improve the local stability of the web and improve the overall stable bearing capacity of the steel column;

The utility model does not need to add longitudinal stiffeners in the longitudinal direction of the components, which saves labor and materials, and can reduce the comprehensive engineering cost of the project;

Compared with the truss-type L-shaped cross-section special-shaped steel column, the utility model has simple structure, convenient and fast manufacturing and processing, and low cost;

Compared with the truss-type L-shaped cross-section special-shaped steel column, the utility model has high shear bearing capacity, good ductility and seismic performance, and superior overall stable bearing capacity;

Compared with the solid-belly type L-shaped cross-section special-shaped steel column, the utility model has less steel consumption and light weight when the cross-section height is equal, which can save steel materials and reduce engineering costs;

Compared with the solid-belly type L-shaped cross-section special-shaped steel column, the utility model increases the section modulus, section moment of inertia and radius of gyration under the condition that the cross-section steel material is equal, and improves the utilization efficiency of steel and the resistance of the steel column. Bending stiffness and stable bearing capacity;

The utility model has light weight, which can reduce the weight of the structure, thereby reducing the pressure on the foundation and reducing the cost of the foundation part;

The flange steel pipe of the utility model is filled with concrete, which enhances the fire resistance of the composite column;

The flange of the utility model adopts the composite flange of steel pipe concrete in the way of placement, which improves the local stability of the flange, thereby improving the stability of the entire composite column;

The utility model is a novel special-shaped column especially suitable for steel structure residential buildings, which expands the research and application fields of shaped steel columns and greatly enriches the content of steel structure columns.

The utility model can provide new key components for the development of a new steel structure residential system, and has a good transformation prospect.

Description of drawings

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

Fig. 2 is a schematic cross-sectional view of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2: a corrugated steel web-concrete steel tube flange composite section L-shaped column, including flat steel plate flange one 1, flat steel plate flange two 2, flat steel plate flange three 3, steel web Plate one 4 and steel web two 5, one side of the steel web two 5 is vertically connected with the edge of the steel web one 4 to form an L-shaped cross-section special-shaped steel column, the steel web 1 4 and steel web 2 5 are corrugated steel webs. The corrugated steel column webs are in the form of curves, broken lines or trapezoids. The non-corrugated edges of the web are respectively welded at the midpoints of the widths of the first flat steel flange 1, the second flat steel flange 2, and the third flat steel flange 3. The steel plate flange 3 is the steel pipe concrete flange, the steel pipe concrete flange includes the steel pipe and the concrete inside, and the concrete is self-compacting concrete.

Embodiment of the present utility model:

Usually steel pipes, corrugated steel webs and their welding are completed in the factory; pouring concrete into the steel pipes is completed at the construction site.

The basic production procedure is: making corrugated steel webs → making steel pipes → welding → transporting to the construction site → hoisting in place → pouring concrete into the steel pipes.

It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (1)

1. A corrugated steel web-concrete steel tube flange combined section L-shaped column, characterized in that: comprise flat steel plate flange one, flat steel plate flange two, flat steel plate flange three, steel web one and steel Web 2, one side of the steel web 2 is vertically connected to the edge of the steel web 1 to form an L-shaped cross-section special-shaped steel column, and the steel web 1 and steel web 2 are corrugated Steel webs, corrugated steel column webs are in the form of curves, broken lines or trapezoids, corrugated steel webs have periodically repeated corrugated sides perpendicular to the length direction of the member, and the non-corrugated sides of corrugated steel webs are respectively connected to the flange of the steel plate 1. Welding at the midpoint of the width of flat steel plate flange two and flat steel plate flange three. The flat steel plate flange one, flat steel plate flange two, and flat steel plate flange three are steel tube concrete flanges, and the steel tube concrete flanges And the concrete inside it, the concrete is self-compacting concrete.