CN217461186U - Steel pipe confined concrete column with shear keys embedded in core area - Google Patents

Abstract

A steel tube confined concrete column with shear keys embedded in a core area relates to the field of building structures. The steel pipe confined concrete column of the embedded shear key in core zone includes the steel pipe confined concrete column of constituteing by inside concrete and core zone outsourcing steel pipe, the inner wall of core zone outsourcing steel pipe is connected with a plurality of shear keys, core zone outsourcing steel pipe include four upper portion steel sheets and with the lower part steel sheet of upper portion steel sheet one-to-one, the sunken recess that forms of lower part steel sheet, the upper portion steel sheet is equipped with the lug, the upper portion steel sheet encloses with the lower part steel sheet that corresponds and closes the through-hole that forms the lateral part that is located inside concrete. The steel tube confined concrete column with the embedded shear keys in the core area can reduce the workload of formwork removal in site construction, and meanwhile, the outer steel tube and the inner concrete work together by arranging the embedded shear keys, so that a steel-concrete combined section is formed, the vertical bearing capacity and the shear-resistant bearing capacity of the node area are improved, and a strong node weak member is realized, thereby reducing the stirrup diameter in the core area and improving the construction efficiency.

Description

Steel pipe confined concrete column with shear keys embedded in core area

Technical Field

The application relates to the field of building structures, in particular to a steel tube confined concrete column with embedded shear keys in a core area.

Background

In recent years, the prefabricated building and the building industrialization of China develop rapidly, a steel pipe constraint concrete structure is produced correspondingly as a novel prefabricated structure system, the problem of bulging and bending of the steel pipe can be effectively avoided because the outer wrapping steel pipe of the system does not directly bear the vertical load of the building, and the steel pipe is thin in thickness and has good economical efficiency, so that the steel pipe is more and more widely applied.

The existing steel pipe confined concrete structure adopts ring rib type nodes or semi-through type nodes in a core area of a steel pipe confined concrete column and a reinforced concrete beam, wherein the diameter of a column stirrup in the core area is large, and holes in the core area are small, so that the defects that a beam longitudinal rib is difficult to penetrate through a rib, a construction operation surface is small, the binding of the reinforcing steel bars in the core area and the construction of concrete are difficult to solve.

SUMMERY OF THE UTILITY MODEL

An object of this application provides a steel pipe confined concrete column of embedded shear key in nuclear core district can reduce site operation formwork stripping work load, has realized outsourcing steel pipe and inside concrete common work simultaneously through setting up embedded shear key, forms steel-concrete combined cross-section and improves the vertical bearing capacity and the anti shear capacity in node district, realizes the weak component of strong node to reduce nuclear core district stirrup diameter and improve the efficiency of construction.

The embodiment of the application is realized as follows:

the embodiment of the application provides a steel pipe confined concrete column of embedded shear key in core zone, it includes the steel pipe confined concrete column of constituteing by inside concrete and core zone outsourcing steel pipe, the inner wall connection of core zone outsourcing steel pipe has a plurality of shear keys, core zone outsourcing steel pipe include four upper portion steel sheets and with the lower part steel sheet of upper portion steel sheet one-to-one, the sunken recess that forms of lower part steel sheet, the upper portion steel sheet is equipped with the lug, the upper portion steel sheet encloses with the lower part steel sheet that corresponds and closes the through-hole that forms to be located inside concrete lateral part.

In some optional embodiments, the stress diffusion plate is connected to the steel pipe wrapped outside the core area, and the stress diffusion plate is formed by connecting a plurality of deformed steel plates.

In some alternative embodiments, the edge of the stress diffusion plate is provided with an arc-shaped slot for passing through the longitudinal rib in the column.

In some alternative embodiments, a plurality of profiled steel sheets enclose the opening.

In some optional embodiments, a plurality of perforated shear-resistant steel bars are further disposed in the inner concrete, a plurality of shear-resistant steel bar holes are disposed on the core-area outer-wrapped steel tube, and both ends of each perforated shear-resistant steel bar respectively penetrate through two shear-resistant steel bar holes on the core-area outer-wrapped steel tube.

The beneficial effect of this application is: the application provides a steel pipe confined concrete column of embedded shear key in nuclear core zone includes the steel pipe confined concrete column of constituteing by inside concrete and nuclear core zone outsourcing steel pipe, the inner wall of nuclear core zone outsourcing steel pipe is connected with a plurality of shear keys, nuclear core zone outsourcing steel pipe include four upper portion steel sheets and with the lower part steel sheet of upper portion steel sheet one-to-one, sunken formation recess of lower part steel sheet, the upper portion steel sheet is equipped with the lug, the upper portion steel sheet encloses with the lower part steel sheet that corresponds and closes the through-hole that forms to be located inside concrete lateral part. The application provides a steel pipe confined concrete column of embedded shear key in nuclear core space can reduce site operation formwork stripping work load, realized outsourcing steel pipe and inside concrete combined operation simultaneously through setting up embedded shear key, form steel-concrete combined cross-section and improve the vertical bearing capacity and the anti bearing capacity of shearing in node area, realize the weak component of strong node, thereby reduce nuclear core space stirrup diameter, it is convenient to provide the site operation, guarantee nuclear core space construction quality when having improved site operation efficiency greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a steel pipe confined concrete column with shear keys embedded in a core region according to embodiment 1 of the present application;

fig. 2 is a schematic structural diagram of a steel pipe and a stress diffuser plate wrapped outside a core region in a steel pipe confined concrete column with a shear key embedded in the core region according to embodiment 1 of the present application;

fig. 3 is a schematic structural diagram of a first view angle of an upper steel plate and a lower steel plate in a steel pipe-reinforced concrete column with a shear key embedded in a core region according to embodiment 1 of the present application;

fig. 4 is a schematic structural diagram of a second viewing angle of an upper steel plate and a lower steel plate in a steel pipe-reinforced concrete column with a shear key embedded in a core region according to embodiment 1 of the present application;

fig. 5 is a schematic structural diagram of four deformed steel plates in a steel tube confined concrete column with a shear key embedded in a core region according to embodiment 1 of the present application;

fig. 6 is a schematic cross-sectional view of a steel pipe confined concrete column with shear keys embedded in the core region according to embodiment 1 of the present application;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

fig. 8 is a schematic structural view of steel pipes and perforated shear-resistant steel bars wrapped outside a core region of a steel pipe-reinforced concrete column with a shear key embedded in the core region according to embodiment 2 of the present application;

fig. 9 is a schematic cross-sectional structure view of a steel pipe confined concrete column with shear keys embedded in the core region according to embodiment 2 of the present application.

Fig. 10 is a sectional view taken along line B-B in fig. 9.

In the figure: 100. internal concrete; 110. a shear key; 120. longitudinal ribs in the column; 130. punching shear steel bars; 200. a steel pipe is wrapped outside the core area; 210. an upper steel plate; 220. a lower steel plate; 230. a groove; 240. a bump; 250. a deformed steel plate; 260. an arc-shaped slot; 270. an opening; 280. and (4) shearing-resistant reinforcing steel bar holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The characteristics and properties of the steel pipe confined concrete column with shear keys embedded in the core region of the present application will be described in further detail with reference to the following examples.

Example 1

As shown in fig. 1, 2, 3, 4, 5, 6, and 7, an embodiment of the present invention provides a steel pipe-reinforced concrete column with embedded shear keys in the core region, which includes a steel pipe-reinforced concrete column composed of an internal concrete 100 and a core region-encased steel pipe 200, wherein the thickness of the core region-encased steel pipe 200 is 2-2.5 times the thickness of the column-encased steel pipe, and the strength grade of the core region-encased steel pipe 200 is improved by one step compared with that of the column-encased steel pipe, the core region-encased steel pipe 200 includes four factory-welded upper steel pipes composed of upper steel plates 210 and four factory-welded upper steel pipes composed of lower steel plates 220, each side of the lower steel pipes is recessed to form a groove 230, each side of the upper steel pipes is provided with a bump 240, the inner wall of the encased steel pipe 200 is welded with a plurality of shear keys 110, the shear keys 110 are rectangular steel plates with a length and a width of 50mm and a thickness of 10mm, the shear keys 110 are arranged at intervals along the length direction of the outer-coated steel pipe 200 in the core area, the longitudinal distance is 200mm, a rectangular through hole is formed in each side after the upper steel pipe and the lower steel plate steel pipe are welded, the size of the rectangular through hole is the same as that of the cross section of the connected reinforced concrete beam, and longitudinal bars of the reinforced concrete beam can penetrate through the through holes; the top of core region outsourcing steel pipe 200 is connected with the stress diffuser plate that four dysmorphism steel sheet 250 that connect gradually are constituteed, stress diffuser plate around with upper portion steel pipe welding form wholly, the edge of four dysmorphism steel sheet 250 is equipped with the arc wall 260 that supplies the interior muscle 120 of indulging of post to pass respectively, four dysmorphism steel sheet 250 enclose at the top of core region outsourcing steel pipe 200 and close and form opening 270.

The steel pipe confined concrete column of the embedded shear key in nuclear core district that this application embodiment provided is through at 200 inner wall welding shear keys 110 of nuclear core district outsourcing steel pipe, can reduce site operation formwork stripping work load, simultaneously through increaseing 200 wall thicknesses of nuclear core district outsourcing steel pipe and embedded shear key 110, core district outsourcing steel pipe 200 and inside concrete 100 common work have been realized, form steel-concrete composite cross-section, improve the vertical bearing capacity and the anti shearing bearing capacity in node district, realize the weak component of strong node, this effect is the same with increaseing the nuclear core district stirrup, consequently, can reduce the diameter of nuclear core district stirrup, it is convenient to provide for site operation, site operation efficiency is greatly improved, guarantee the construction quality in nuclear core district simultaneously.

The top of core region outsourcing steel pipe 200 is connected with the stress diffuser plate that four dysmorphism steel sheet 250 that connect gradually are constituteed, the stress diffuser plate can be passed core region outsourcing steel pipe 200 to the power of inside concrete 100, let core region outsourcing steel pipe 200 participate in and undertake vertical power, common atress forms the combination cross-section, the arc wall 260 that the muscle 120 passed is indulged in the formation confession each root post in sunken formation respectively in the edge of four dysmorphism steel sheet 250, four dysmorphism steel sheet 250 enclose on the top of core region outsourcing steel pipe 200 and close formation opening 270, can not influence the interior arrangement and the construction of indulging the muscle of post with being convenient for.

Example 2

As shown in fig. 8, 9 and 10, an embodiment of the present invention provides a steel tube-reinforced concrete column with a shear key embedded in a core region, which has substantially the same structure as the steel tube-reinforced concrete column with a shear key embedded in a core region provided in embodiment 1, except that in this embodiment, a stress diffusion plate is not provided, four perforated shear bars 130 are further provided in the internal concrete 100, eight shear bar holes 280 corresponding to the perforated shear bars 130 are provided in the core region outer-wrapped steel tube 200, two ends of the perforated shear bars 130 respectively pass through two shear bar holes 280 in the core region outer-wrapped steel tube 200, and two transverse sides and two longitudinal sides of the four perforated shear bars 130 are arranged in a groined shape.

The steel pipe confined concrete column of the embedded shear key in core district that this application embodiment provided is equipped with four perforation shear steel bars 130 in inside concrete 100, four perforation shear steel bars 130 two are violently two indulges and are the groined type and arrange and both ends run through core district outsourcing steel pipe 200 respectively, can utilize perforation shear steel bars 130 to connect into a whole between with inside concrete 100 and the core district outsourcing steel pipe 200, with the stress dispersion that inside concrete 100 received to core district outsourcing steel pipe 200 department.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (5)

1. The utility model provides an embedded shear key's of nuclear zone steel pipe confined concrete column, its characterized in that, it includes the steel pipe confined concrete column of constituteing by inside concrete and nuclear zone outsourcing steel pipe, the inner wall of nuclear zone outsourcing steel pipe is connected with a plurality of shear keys, nuclear zone outsourcing steel pipe include four upper portion steel sheets and with the lower part steel sheet of upper portion steel sheet one-to-one, sunken formation recess of lower part steel sheet, the upper portion steel sheet is equipped with the lug, upper portion steel sheet and corresponding the lower part steel sheet encloses to close and forms and is located the through-hole of inside concrete lateral part.

2. The column of claim 1, wherein the stress diffuser plate is formed by connecting a plurality of deformed steel plates to the steel tube outside the core region.

3. The column of claim 2, wherein the edge of the stress diffuser plate is provided with an arc-shaped slot for passing a longitudinal rib in the column.

4. The column of claim 2, wherein a plurality of said profiled steel sheets enclose an opening.

5. The column as claimed in claim 1, wherein a plurality of shear-resistant steel bars are disposed in the inner concrete, a plurality of shear-resistant steel bar holes are disposed in the steel tube, and two ends of each shear-resistant steel bar pass through two shear-resistant steel bar holes in the steel tube.

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