CN204174837U - Honeycomb-shaped steel web-steel pipe concrete flange combined cross-shaped column - Google Patents

Abstract

The utility model discloses a cross-section cross-shaped column with honeycomb steel web-concrete-filled steel pipe flange composite section, which comprises a steel-filled concrete-filled flange, a second steel-filled concrete flange, a third steel-filled concrete flange, a fourth steel-filled concrete flange, and a steel web Plate 1, steel web 2 and steel web 3, the steel web 1, steel web 2 and steel web 3 are connected together to form a cross member, steel web 1, steel web 2 and steel web The third is a honeycomb steel web with a web hole in the middle. Steel web 1, steel web 2 and steel web 3 are respectively composed of steel plates with notches on the edges. The steel plates are welded by butt welds to form a honeycomb steel web . The utility model improves the mechanical performance of the existing solid-web type web cross-section special-shaped steel column and truss-type web rod cross-section special-shaped steel column, and does not significantly increase the comprehensive cost of the project, so that it can be used in the project widely used.

Description

Honeycomb steel web-concrete filled steel tube flange composite section cross-shaped column

technical field

The utility model relates to the technical field of a new type of building structure, in particular to a cross-section cross-shaped column with a composite cross-section of a honeycomb steel web-steel tube concrete flange.

Background technique

In multi-story steel structure residences, the special-shaped column structure has advantages that other structural systems cannot match. It has been highly valued and widely used.

In the actual engineering of multi-story steel structure residences, the center column usually adopts the traditional solid-web cross-section special-shaped steel column or truss-type cross-section special-shaped steel column. In order to meet the requirements of compressive bending mechanical performance, a larger section size is usually required. If a solid-web cross-section special-shaped steel column is selected, the shear strength of the web will have a lot of surplus, but in order to ensure the local stability of the web, satisfy The web height-to-thickness ratio limit specified in the "Code for Design of Steel Structures" usually needs to increase the web thickness, which will lead to increased steel consumption and increased project costs, thereby increasing the overall cost of the project; if the truss type is selected In addition to the limited shear bearing capacity, seismic performance and overall stability of cross-section special-shaped steel columns, the truss-type web members need to be welded with plates or strips. The construction is relatively cumbersome, and the connection workload is relatively large. The construction cost will also increase the overall cost of the project. Moreover, when the bending moment effect is large, the flanges of the above two 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 this utility model is to improve the mechanical performance of the existing solid-web type web cross-section special-shaped steel column and truss-type web rod cross-section special-shaped steel column, without significantly increasing the comprehensive cost of the project, so that it can be used in the project Widely used in the present invention, a cross-section cross-shaped column with honeycomb steel web-concrete filled steel tube flange composite section is provided.

The technical scheme adopted by the utility model is: a cross-section cross-shaped column with honeycomb steel web-concrete-filled steel pipe flange, including steel pipe concrete flange one, steel pipe concrete flange two, steel pipe concrete flange three, steel pipe concrete flange 4. Steel web 1, steel web 2 and steel web 3, the steel web 1, steel web 2 and steel web 3 are connected together to form a cross-shaped member, and the four outer ends of the cross-shaped member Connect with the width midpoints of CFST flange 1, CFST flange 2, CFST flange 3, and CFST flange 4 respectively to form a cross-section column, steel web 1, steel web 2 and steel web The third is a honeycomb steel web with a web hole in the middle. The second steel web and the third steel web are respectively composed of two steel plates with the same shape with notches on the edges. These two steel plates are welded by butt welds to form a honeycomb steel web. Web: steel web one is composed of two steel plates of the same shape with notches on one side edge and one steel plate with notches on both sides edges. These three steel plates are welded by butt welds to form a honeycomb steel web.

Preferably, the hole form of the first steel web, the second steel web and the third steel web is circular, oval, square, rectangular, hexagonal or octagonal.

Preferably, the first concrete-filled steel pipe flange, the second concrete-filled steel pipe flange, the third concrete-filled steel pipe flange and the fourth concrete-filled steel pipe flange are rectangular steel pipes or round steel pipes.

Preferably, the cross-section special-shaped steel columns with honeycomb webs include two types: equal-leg cross-section and unequal-leg cross-section.

The specific formation method of the column of the utility model is as follows: first cut the steel plate used for the web according to a predetermined broken line or curve, stagger the half-wave butt welding to form a honeycomb steel web, then weld with the steel pipe of the steel pipe concrete flange, and finally weld the steel pipe to the steel pipe Made of mid-cast concrete.

In the section composition, the welding process and welding quality will directly affect the performance of the steel column. For this reason, the utility model needs to ensure a good welding process (pair welding process can be used); the "expansion ratio" (opening ratio) of the composite column section porosity) increases, the height of the section increases, the stiffness and radius of gyration increase, the slenderness ratio decreases, and the stable bearing capacity is improved. However, after the web is opened with holes, its shear performance will be affected to a certain extent. Therefore, in the actual project, the "expansion ratio" or opening ratio should be controlled according to the actual stress situation; 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 it is advisable to choose Self-compacting concrete.

The basic features of the utility model: in a more economical way, the section height of the steel column is increased to improve 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; the section structure is reasonable , good mechanical properties; good fire resistance and anti-corrosion performance; simple structure, convenient and fast production and processing, saving labor and materials, 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;

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

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

The web of the utility model can be designed with different hole shapes according to different aesthetic requirements to make it beautiful;

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 honeycomb steel web-concrete-filled steel tube flange composite section cross-shaped column, including steel tube concrete flange one 1, steel tube concrete flange two 2, steel tube concrete flange three 3, steel tube concrete Flange four 4, steel web one 5, steel web two 6 and steel web three 7, the steel web one 5, steel web two 6 and steel web three 7 are connected together to form a cross-shaped member, The four outer ends of the cross-shaped member are respectively connected to the width midpoints of CFST flange 1, CFST flange 2, CFST flange 3, and CFST flange 4, forming a cross-section column. Steel web 1 5, steel web 2 6 and steel web 3 7 are honeycomb steel webs with web holes 8 in the middle, steel web 2 6 and steel web 3 7 have two edges with notches The two steel plates are welded by butt welds to form a honeycomb steel web; the steel web-5 is composed of two steel plates with the same shape with notches on one edge and one steel plate with notches on both sides , the three steel plates are welded by butt welds to form a honeycomb steel web. The holes of the first steel web 5 , the second steel web 6 and the third steel web 7 are circular, elliptical, square, rectangular, hexagonal or octagonal. The concrete-filled steel tube flange one 1 , the second concrete-filled steel tube flange 2 , the third concrete-filled steel tube flange 3 and the fourth concrete-filled steel tube flange 4 are rectangular steel pipes or round steel pipes. The cross-section special-shaped steel columns with honeycomb webs include two types: equal-leg cross-section and unequal-leg cross-section.

Embodiment of the utility model:

Usually the steel pipe, honeycomb steel web and its welding are completed in the factory; pouring concrete into the steel pipe is completed at the construction site.

The basic production procedure is: making honeycomb 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 (3)

1. cellular steel web-compound section, concrete filled steel tube edge of a wing cross section column, it is characterized in that: comprise the concrete filled steel tube edge of a wing one, the concrete filled steel tube edge of a wing two, the concrete filled steel tube edge of a wing three, the concrete filled steel tube edge of a wing four, steel web one, steel web two and steel web three, described steel web one, steel web two and steel web three are joined together to form dagger, four outer ends of this dagger respectively with the concrete filled steel tube edge of a wing one, the concrete filled steel tube edge of a wing two, the concrete filled steel tube edge of a wing three, the width mid point on the concrete filled steel tube edge of a wing four connects, form cross shaped column, steel web one, steel web two and steel web three are the middle cellular steel web being provided with web hole, steel web two and steel web three are made up of the identical steel plate of the notched shape of two block edges respectively, this two block plate forms cellular steel web by butt weld welding, steel web one is made up of the identical steel plate of the notched shape in edge, two pieces of sides and one block of notched steel plate in both sides of the edge, and this three block plate forms cellular steel web by butt weld welding.

2. cellular steel web according to claim 1-compound section, concrete filled steel tube edge of a wing cross section column, is characterized in that: the described concrete filled steel tube edge of a wing one, the concrete filled steel tube edge of a wing two, the concrete filled steel tube edge of a wing three and the concrete filled steel tube edge of a wing four are rectangular steel pipe or round steel pipe.

3. cellular steel web according to claim 1-compound section, concrete filled steel tube edge of a wing cross section column, is characterized in that: the cross section of described cellular web star section abnormity steel column such as to comprise at limb and limb star section two class such as not.