CN215406931U - Thin-wall stainless steel tube concrete column member with high bearing capacity - Google Patents

Abstract

The utility model discloses a thin-wall stainless steel tube concrete column member with high bearing capacity, which comprises an outer-coated square steel tube and stiffening ribs, wherein a rectangular frame body formed by two groove-shaped steel plates is longitudinally arranged on four inner side walls of the outer-coated square steel tube, and a gap is formed between the two groove-shaped steel plates; the stiffening rib passes through the breach and pegs graft with the rectangular frame body, and the stiffening rib is T shape, and the stiffening rib has edge of a wing and web, and the edge of a wing inserts the rectangular frame body inner chamber, and the web is located outside the rectangular frame body, and the vertical draw-in groove of seting up a plurality of equidistant of web side, draw-in groove staggered arrangement on two adjacent webs connects through the connecting piece for the draw-in groove between two relative webs. The concrete column provided by the utility model is attractive in appearance and simple in construction, has good bearing capacity, local buckling resistance and corrosion resistance, and can be used for properly reducing the wall thickness of the stainless steel tube wrapped outside on the premise of ensuring the safety of the member due to strong constraint of the member, so that the aim of reducing the cost is fulfilled.

Description

Thin-wall stainless steel tube concrete column member with high bearing capacity

Technical Field

The utility model relates to the field of civil engineering, in particular to a thin-wall stainless steel tube concrete column member with high bearing capacity.

Background

The thin-wall stainless square steel tube concrete column is evolved on the basis of the previous carbon thin-wall steel tube concrete column, and the external carbon steel is changed into stainless steel, so that the steel tube concrete column has higher bearing capacity, deformability, corrosion resistance and fireproof performance, and the wall thickness is reduced to achieve the aims of reducing the manufacturing cost and being easy to weld; the square steel pipe has more advantages than the round steel pipe in the aspect of node connection, so the square steel pipe is widely applied to building engineering.

In the thin-wall square steel tube concrete column, due to the defect of the restraint of the middle parts of four sides of the thin-wall square steel tube, the large non-restrained area of the middle part of the square steel tube cannot provide more restraint for core concrete, so that the steel tube of the column is too early to yield under pressure; and because concrete is the main stressed part in the thin-wall component, when the strength of the concrete is lower, the strength of the core concrete is not high, so that the concrete is easy to crush. The steel pipe is earlier too early to take place to surrender after its component reaches the certain degree at the load, later because core concrete self intensity is not high simultaneously outer steel pipe can't provide more restraint thereby by the crushing, and then leads to the outer drum of square steel pipe middle part serious, seriously reduces component bearing capacity, the bearing potential of performance steel core concrete column that can not be better, probably endangers the safety of building. The carbon steel pipe has no good corrosion resistance, and when the carbon steel pipe is in a strong corrosive environment, the surface of the carbon steel pipe needs to be coated with antirust paint, so that the corresponding cost is increased. In view of the above-mentioned technical problems, it is very necessary to design a thin-walled stainless steel tubular concrete column member with high bearing capacity to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thin-wall stainless steel tube concrete column member with high bearing capacity, and aims to solve the technical problems of poor bearing capacity, local buckling resistance and corrosion resistance and higher cost of the existing concrete column.

The technical scheme of the utility model is as follows: a thin-wall stainless steel tube concrete column structure with high bearing capacity comprises an outer-coated square steel tube and stiffening ribs, wherein rectangular frame bodies formed by two groove-shaped steel plates are longitudinally arranged on four inner side walls of the outer-coated square steel tube, and a gap is formed between the two groove-shaped steel plates;

the stiffening rib is pegged graft through breach and rectangular frame body, and the stiffening rib is T shape, and the stiffening rib has edge of a wing and web, and the edge of a wing inserts rectangular frame body inner chamber, and the web is located outside the rectangular frame body, and the vertical draw-in groove of seting up a plurality of equidistant of web side, draw-in groove staggered arrangement on two adjacent webs connects through the connecting piece for the draw-in groove between two relative webs.

Due to the arrangement of the structure, the two opposite stiffening ribs are connected by the connecting piece, so that the stiffening ribs in the member can strengthen the constraint of the outer square steel pipe on the core concrete by increasing the contact area with the concrete; when the concrete begins to crack, the reinforcing rib and the concrete are debonded, the bearing capacity is reduced to a certain degree, the connecting piece can supplement the bearing capacity and the ductility of a member between a part of T-shaped reinforcing rib and the concrete, which are reduced due to the reduction of the adhesive force, in a pulling mode, but holes exist on a web plate of the T-shaped reinforcing rib, when the web plate is pulled and connected by the middle connecting piece, stress concentration at the corners of the holes can be caused, so that the corners are deformed too much, and the pulling effect cannot be achieved, so that rectangular steel sheets are required to be welded on the outer walls of the two sides of the first clamping groove in the horizontal direction, the tension can be uniformly distributed on more steel materials as far as possible through the rectangular steel sheets to prevent the stress concentration, and then the rigidity of a non-constraint area of the externally-wrapped square steel pipe is increased due to the addition of the rectangular frame body in the middle of the square steel pipe, the middle part of the component is not easy to yield, and the middle part of the outer square steel pipe is evenly stressed. The buckling height of the middle parts of the four sides of the square steel pipe can be reduced due to the three measures of the rectangular frame body, the stiffening ribs and the connecting piece, and the occurrence of local yielding and concrete crushing is delayed. Due to the above properties, the structure can be used for compression members and in environments with corrosive media around, such as columns, piers and the like of super high-rise buildings.

The draw-in groove is the type of falling L, and the draw-in groove includes along the first draw-in groove of horizontal direction and follows the ascending second draw-in groove of vertical side, the connecting piece gets into the second draw-in groove through first draw-in groove, and first draw-in groove both sides outer wall all welds the rectangle steel sheet, the rectangle steel sheet is used for sealing first draw-in groove.

Due to the arrangement of the structure, the inverted L-shaped clamping groove is vertically formed in the side edge of the web plate, so that the second clamping groove in the inverted L-shaped clamping groove is connected with the hollow space of the column conveniently. After the composite material is placed in the clamping groove, the rectangular steel sheets are welded to two sides of the transverse hole in the composite hole.

The vertical interval between two adjacent draw-in grooves is twice of first draw-in groove length, and the width of connecting piece is less than or equal to the long limit length of second draw-in groove.

Due to the arrangement of the structure, the connecting pieces in different directions can be stressed respectively, and each part on the square steel pipe column can be stressed uniformly as far as possible.

The inner cavity of the outer-wrapping square steel pipe is filled with concrete, and the inner cavity of the rectangular frame body is filled with self-compacting concrete.

The stiffening ribs, the rectangular frame body and the outsourcing square steel pipes are equal in height, and the axial leads of the stiffening ribs and the rectangular frame body are coincided with the axial lead of the outsourcing square steel pipe.

The outer square steel pipe is LDX2101 double-phase stainless steel thin-wall steel pipe, the connecting piece is carbon fiber cloth or flat steel, and the stiffening rib is carbon steel.

Due to the arrangement of the structure, the LDX2101 duplex stainless steel has good corrosion resistance, wear resistance and mechanical strength, so that the duplex stainless steel is used as an outer-coated steel pipe, the member can be effectively protected, the influence of external factors on the member is reduced, the constraint on core concrete can be enhanced, and the bearing capacity of the member is improved.

In conclusion, the beneficial effects of the utility model are as follows:

1. the utility model well inherits the advantages of the traditional member, and can properly reduce the wall thickness of the stainless steel pipe wrapped outside on the premise of ensuring the safety of the member due to the strong constraint of the member, thereby achieving the purpose of reducing the cost.

2. The concrete column provided by the utility model is attractive in appearance, simple in construction, good in bearing capacity, local buckling resistance and corrosion resistance, and low in construction cost.

Drawings

FIG. 1 is a top view of the present invention.

FIG. 2 is a schematic view of a stiffener structure according to the present invention.

FIG. 3 is a schematic view of the connection sequence of the connecting member and the stiffening ribs according to the present invention.

FIG. 4 is a schematic view showing the connection between the connecting member, the reinforcing rib and the steel plate according to the present invention.

FIG. 5 is a schematic view showing the connection between the flat steel and the web of the T-shaped stiffener according to the present invention.

In the figure: 1-wrapping square steel pipe, 2-stiffening rib, 201-flange, 202-web plate, 203-clamping groove, 203 a-first clamping groove, 203 b-second clamping groove, 3-rectangular frame body, 4-connecting piece, 5-rectangular steel sheet, 6-channel steel plate and 7-flat steel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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.

Example 1;

the utility model provides a thin-wall stainless steel tube concrete column member with high bearing capacity, which comprises an outer-coated square steel tube 1 and stiffening ribs 2, wherein rectangular frame bodies 3 formed by two groove-shaped steel plates 6 are longitudinally arranged on four inner side walls of the outer-coated square steel tube 1, and a gap is formed between the two groove-shaped steel plates 6;

the stiffening rib 2 is spliced with the rectangular frame body 3 through the notch, the stiffening rib 2 is T-shaped, the stiffening rib 2 is provided with a flange 201 and a web 202, the flange 201 is inserted into the inner cavity of the rectangular frame body 3, the web 202 is positioned outside the rectangular frame body 3, a plurality of clamping grooves 203 with equal intervals are vertically arranged on the side edge of the web 202, the clamping grooves 203 on two adjacent webs 202 are arranged in a staggered mode, and the two opposite webs 202 are connected through the clamping grooves 203 through connecting pieces 4. The card slot 203 is the type of falling L, and the card slot 203 includes along the ascending second card slot 203b of first card slot 203a of horizontal direction and edge vertical direction, connecting piece 4 gets into second card slot 203b through first card slot 203a, and first card slot 203a both sides outer wall all welds rectangle steel sheet 5, rectangle steel sheet 5 is used for sealing first card slot 203 a. The square steel pipe 1 of outsourcing adopts square LDX2101 diphase body stainless steel pipe, and stiffening rib 2 adopts the carbon steel board, and connecting piece 4 is the carbon cloth, and draw-in groove 203 is the compound draw-in groove of type of falling L, and connecting piece 4 adopts the carbon cloth, and the square steel pipe 1 inner chamber of outsourcing is filled high-strength concrete after the component is assembled, and 3 inner chambers of rectangular frame are filled from closely knit concrete.

The outer-wrapping square steel pipe 1 is formed by welding four stainless steel plates with equal thickness together through full penetration groove welding, the groove-shaped steel plate 6 and the inner side of the outer-wrapping square steel pipe 1 are welded through fillet welding, the groove-shaped steel plate can be welded into a groove-shaped section through steel plates and L-shaped steel, and the materials can use surplus shaped steel, so that the purpose of consuming surplus shaped steel capacity is achieved.

The length of the connecting piece 4 needs to be determined before installation, and the carbon fiber cloth of the connecting piece 4 is mainly ensured to be in a linear state as much as possible; before installing the carbon fiber cloth of the connecting piece 4, the carbon fiber impregnating compound at the joint parts at two ends of the carbon fiber cloth is determined to have enough bonding strength, then the carbon fiber cloth of the carbon connecting piece 4 can directly enter the second clamping groove 203b through the first clamping groove 203a in the clamping groove 203, then the rectangular steel sheet 5 is welded to two side surfaces of the first clamping groove 203a to seal the first clamping groove 203a, the stress performance of the T-shaped stiffening rib web plate is ensured, wherein the rectangular steel sheet 5 only needs to seal the first clamping groove 203a, and the size of the rectangular steel sheet can be determined according to the field condition.

Vertical interval between two adjacent draw-in grooves 203 is the twice of first draw-in groove 203a length, and draw-in groove 203 should be greater than 20mm apart from 2 tip of stiffening rib, and draw-in groove 203 on the stiffening rib of equidirectional should the staggered arrangement, arranges like this and can guarantee that the connecting piece 4 of equidirectional can atress separately to can guarantee as far as possible that every position atress on the square steel tubular column is even. The width of connecting piece 4 is less than or equal to the long limit length of second draw-in groove 203b, it is mainly in order to guarantee that 4 carbon fiber cloth of connecting piece can not appear the carbon fiber cloth and appear cutting phenomenon each other between two liang when the atress, the width in distance and the rectangular hole between the carbon fiber cloth 4 can be designed and confirmed according to actual conditions, and draw-in groove 203 should arrange the side at 2 webs of T shape stiffening rib along vertical direction, can guarantee when 4 drawknot T shape stiffening rib 2 of carbon fiber cloth, the web of T shape stiffening rib 2 can not appear pulling and destroy.

The inner cavity of the outer square steel pipe 1 is filled with concrete, and the inner cavity of the rectangular frame 3 is filled with self-compacting concrete. The four T-shaped stiffening ribs 2 connected with the carbon fiber cloth 4 are respectively inserted into the rectangular frame body 3, and then when high-strength concrete is poured, four corners of the column are poured, and after the concrete is poured, the vibrators are inserted into the four corners of the column for vibrating. And then the self-compacting concrete is poured into the rectangular frame body 3, because the space in the inner cavity of the rectangular frame body 3 is not large, the vibrator is not easy to insert, and the self-compacting concrete can well solve the problem and can also increase the rigidity of the non-constrained area to a certain extent.

The stiffening rib 2, the rectangular frame body 3 and the outsourcing square steel pipe 1 are equal in height, and the axial lead of the stiffening rib 2 and the rectangular frame body 3 coincides with the axial lead of the outsourcing square steel pipe 1. The high-strength concrete is filled in the externally-coated square steel tube 1, so that the externally-coated steel tube can be guaranteed to be only outwards yielding, and the concrete can automatically fill the clamping grooves 3 on the stiffening ribs to form concrete tenons due to the clamping grooves 3 on the stiffening ribs 2, so that the yielding of four sides of the square steel tube can be further reduced; because the high-strength concrete has better compression resistance, the high-strength concrete is not easy to crush under larger pressure, thereby ensuring the common working capacity of all components in the steel pipe column to a certain extent and increasing the bearing capacity of the stainless steel pipe column.

The LDX2101 duplex stainless steel tube has good resistance to chloride ion stress corrosion cracking, so the channel steel and the rectangular rigid sheet in the member can be replaced by the LDX2101, and the river sand in the concrete can be replaced by sea sand due to the good corrosion resistance of the carbon fiber cloth, so that the aim of using the raw materials in the coastal city is fulfilled.

Example 2:

as shown in fig. 5, the present embodiment is different from embodiment 1 in that: this example is based on the connector 4 described in example 1, which is characterized in that: the connecting piece is flat steel 7, the welding process of the middle flat steel 7 is basically the same as the welding process of the small steel sheets, furthermore, the end part of the flat steel connecting piece exceeds the central line of the stiffening rib 202, and the flat steel is connected with the web plate of the T-shaped stiffening rib 2 by adopting a welding line.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.

Claims (6)

1. The utility model provides a thin wall stainless steel tube concrete column component of high bearing capacity which characterized in that: the steel tube comprises an outer square steel tube (1) and stiffening ribs (2), wherein rectangular frame bodies (3) enclosed by two groove-shaped steel plates (6) are arranged on four inner side walls of the outer square steel tube (1) in the longitudinal direction, and gaps are formed between the two groove-shaped steel plates (6);

stiffening rib (2) are pegged graft through breach and rectangle framework (3), and stiffening rib (2) are T shape, and stiffening rib (2) have flange (201) and web (202), and rectangle framework (3) inner chamber is inserted in flange (201), and web (202) are located outside rectangle framework (3), and a plurality of equidistant draw-in grooves (203) are vertically seted up to web (202) side, draw-in groove (203) staggered arrangement on two adjacent webs (202), connect with connecting piece (4) through draw-in groove (203) between two relative webs (202).

2. A high load bearing thin wall stainless steel tube concrete column element according to claim 1 wherein: the clamping groove (203) is of an inverted L shape, the clamping groove (203) comprises a first clamping groove (203a) in the horizontal direction and a second clamping groove (203b) in the vertical direction, the connecting piece (4) enters the second clamping groove (203b) through the first clamping groove (203a), rectangular steel sheets (5) are welded on the outer walls of two sides of the first clamping groove (203a), and the rectangular steel sheets (5) are used for sealing the first clamping groove (203 a).

3. A high load bearing thin wall stainless steel tube concrete column element according to claim 1 wherein: the vertical distance between two adjacent clamping grooves (203) is twice the length of the first clamping groove (203a), and the width of the connecting piece (4) is smaller than or equal to the length of the long edge of the second clamping groove (203 b).

4. A high load bearing thin wall stainless steel tube concrete column element according to claim 1 wherein: the inner cavity of the outer square steel pipe (1) is filled with concrete, and the inner cavity of the rectangular frame body (3) is filled with self-compacting concrete.

5. A high load bearing thin wall stainless steel tube concrete column element according to claim 1 wherein: the height of each stiffening rib (2), the height of each rectangular frame body (3) and the height of each outsourcing square steel pipe (1) are equal, and the axial lead of each stiffening rib (2) and the axial lead of each rectangular frame body (3) coincide with the axial lead of each outsourcing square steel pipe (1).

6. A high load bearing thin wall stainless steel tube concrete column element according to claim 1 wherein: the outer square steel pipe (1) is an LDX2101 double-phase stainless steel thin-wall steel pipe, the connecting piece (4) is carbon fiber cloth or flat steel, and the stiffening rib (2) is carbon steel.

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