CN204252397U - T-shaped column with combined section of corrugated steel web and concrete filled steel tube flange - Google Patents

Abstract

The utility model discloses a corrugated steel web-steel tube concrete flange composite section T-shaped column, which is composed of web H-shaped steel and web T-shaped steel welded, or composed of two webs and three flanges welded. The web is corrugated steel web, the form of corrugated steel column web is curved, broken line or trapezoidal, the corrugated steel web has periodically repeated corrugated sides perpendicular to the length direction of the member, and the corrugated steel web has non-corrugated sides The flange is welded at the middle point of the width of the flange, the flange is a steel pipe concrete flange, the steel pipe concrete flange includes a steel pipe and the concrete inside, and the concrete is self-compacting concrete. The utility model improves the mechanical performance of the traditional solid-abdomed special-shaped steel column and its truss-type web bar special-shaped steel column without significantly increasing the comprehensive cost of the project, so that the special-shaped column structure can be more widely used in multi-high-rise residential buildings. application.

Description

Corrugated steel web-concrete filled steel tube flange composite section T-shaped column

technical field

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

Background technique

In residential buildings, special-shaped column structures have incomparable advantages over other structural systems, and are more and more favored by people. In recent years, they have been highly valued by scholars and engineers at home and abroad, and thus have been widely used.

However, in multi-story residential buildings, the reinforced concrete special-shaped column structure is difficult to meet the bearing capacity requirements due to the limitation of the length and thickness ratio of the column section, the crowded reinforcement in the node area, and the unsatisfactory seismic performance and difficult to deal with. The advantages of the special-shaped column cannot be fully reflected, thereby limiting its application range and making it difficult to promote. In order to overcome these deficiencies of reinforced concrete special-shaped columns, people have proposed all-steel special-shaped columns.

In the actual engineering of multi-story steel structure residences, the side columns usually adopt the traditional flat-web solid-web type T-shaped cross-section special-shaped steel columns or truss-type T-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 you choose a special-shaped steel column with flat web and solid web T-section, the shear strength of the web will be much more than that, but in order to ensure the local stability of the web, the web height-thickness ratio limit stipulated in the "Code for Design of Steel Structures" must be met. Value, usually need to increase its web thickness, 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 T-shaped 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 this utility model is to improve the mechanical performance of the traditional solid-abdomed special-shaped steel column and its truss-type web bar special-shaped steel column without significantly increasing the comprehensive cost of the project, so that the special-shaped column structure can be obtained in multi-high-rise residential buildings. For wider applications, a corrugated steel web-concrete-filled steel tube flange composite section T-shaped column is provided.

The technical solution adopted by the utility model is: a corrugated steel web-concrete steel tube flange composite section T-shaped column, which is composed of web H-shaped steel and web T-shaped steel welded, or consists of two webs and three flanges Welding composition, the web is corrugated steel web, the form of the corrugated steel column web is curved, broken line or trapezoidal, the corrugated steel web has periodically repeated corrugated sides perpendicular to the length direction of the component, and the corrugated steel web The non-corrugated edge is welded at the middle point of the width of the flange, and the flange is a steel pipe concrete flange, and the steel pipe concrete flange includes steel pipes and concrete inside, and the concrete is self-compacting concrete.

Preferably, the cross-sectional form of the T-shaped steel column with corrugated web includes two types: equal-leg T-shaped cross-section and unequal-leg T-shaped cross-section.

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 a T-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 basic feature of the utility model is to improve the mechanical performance of the existing special-shaped steel column with T-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 special-shaped steel column with truss type T-section, the utility model has the advantages of simple structure, convenient and rapid manufacturing and processing, and low cost;

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

Compared with the solid-belly T-shaped cross-section special-shaped steel column, the utility model increases the cross-section height, cross-section modulus, cross-section moment of inertia and radius of gyration under the condition that the cross-section steel materials are equal, and improves the steel utilization efficiency and steel utilization efficiency. The bending stiffness and stable bearing capacity of the column;

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 expands the research and application field of the steel-concrete composite column, and greatly enriches the content of the steel structure.

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-steel tube concrete flange composite section T-shaped column, which is composed of web H-shaped steel and web T-shaped steel welded, or welded by two webs and three flanges Composition, the web is a corrugated steel web 2, the form of the corrugated steel column web 2 is curved, broken line or trapezoidal, the corrugated steel web 2 is in the form of periodically repeated corrugated sides perpendicular to the length direction of the component, the corrugated steel The non-corrugated edge of the web plate 2 is welded at the midpoint of the width of the flange. The flange is the steel pipe concrete flange 1. The steel pipe concrete flange includes the steel pipe and the concrete inside, and the concrete is self-compacting concrete. The cross-section forms of the T-shaped special-shaped steel column with corrugated web include two types: equal-leg T-shaped cross-section and unequal-leg T-shaped cross-section.

In the utility model, steel pipes, corrugated steel webs and their welding are usually processed and manufactured in factories; pouring concrete into steel pipes is then 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 (2)

1. A corrugated steel web-steel tube concrete flange combined section T-shaped column is characterized in that: it is formed by welding the web H-shaped steel and the web T-shaped steel, or is formed by welding two webs and three flanges, The webs are corrugated steel webs, the corrugated steel column webs are in the form of curves, broken lines or trapezoids, the corrugated steel webs are periodically repeated corrugated sides perpendicular to the length direction of the component, and the corrugated steel webs are not corrugated The middle point of the width of the edge and the flange is welded, and the flange is a steel pipe concrete flange, and the steel pipe concrete flange includes a steel pipe and concrete inside, and the concrete is self-compacting concrete. 2. The T-shaped column with corrugated steel web-concrete-filled steel tube flange combined section according to claim 1, characterized in that: the cross-sectional form of the T-shaped section special-shaped steel column with corrugated web includes equal limbs and unequal limbs T Two types of cross-sections.