Steel core column structure for embedded type steel reinforced concrete column

Abstract

The utility model discloses a steel core column structure for an embedded type steel reinforced concrete column. A steel core column is provided with four T-shaped plates and a plurality of reinforcing rib plates. Webs of the four T-shaped plates are welded into a whole in a cross-shaped butt joint structure on the plane, and an open butt joint seam is formed between every two adjacent T-shaped plates; the reinforcing rib plates are divided into four groups, and the reinforcing rib plates in each group are welded to the butt joint seam between every two adjacent T-shaped plates at intervals in the height direction of the steel core column. The two-way crossed I-shaped structural steel is formed, the reinforcing rib plates are arranged at the butt-joint seams between the adjacent T-shaped structural steel for integral connection, so that the structural rigidity of the T-shaped structural steel is improved, the high bearing performance is obtained, and meanwhile, the reinforcing rib plates at the butt-joint seams between the adjacent T-shaped structural steel are not prone to deformation in the pouring forming process of peripheral reinforced concrete. A firm anchoring structure can be formed, and the bearing performance of the formed embedded type steel reinforced concrete column can be further improved.

Description

Technical Field

[0001] The utility model relates to a load-bearing structure for buildings, in particular to a steel core column structure for embedded steel concrete columns. Background Art

[0002] The embedded steel-concrete column is a column that uses steel as a core column and is buried in the concrete column structure of the building. The steel core column and the external reinforced concrete form the supporting column of the building. It has the technical characteristics of high bearing capacity, high rigidity, good ductility and good seismic resistance. It is widely used in high-rise building structures or building structures with special bearing performance requirements. Therefore, in the molding structure of the embedded steel-concrete column, the steel core column (i.e., steel core column) is a core load-bearing component, and its molding structure directly determines the bearing performance of the embedded steel-concrete column.

[0003] For a long time, the steel core columns used in embedded steel concrete columns are mostly simple I-shaped structural steel core columns, such as the Chinese patent document entitled "Reinforced concrete column with steel core column and lattice angle steel column", with announcement number CN 215330944 U and announcement date December 28, 2021, and the technology entitled "Temporary fixed structure of steel beam and steel concrete column", with announcement number CN212001633 U and announcement date November 24, 2020. However, since the stiffness of I-shaped structural steel is mainly reflected in the direction along the web, it is relatively poor in the direction perpendicular to the web. In order to further improve the load-bearing structural strength of the steel core column, the industry has studied various complex steel core columns, such as the technology disclosed in the Chinese patent document named "Complex composite structure steel column and its construction method", with publication number CN 116464218 A and publication date of July 21, 2023. Although this technology has high load-bearing performance, its molding structure is complex, which increases the difficulty of construction technology. Utility Model Content

[0004] The technical purpose of the utility model is to provide a steel core column structure for embedded steel concrete columns, which has high load-bearing performance, can be formed with a relatively simple structure, and is conducive to reducing the difficulty of construction technology, in view of the particularity of the above-mentioned embedded steel concrete columns and the shortcomings of the existing technology.

[0005] The technical purpose of the utility model is achieved through the following technical scheme: a steel core column structure for an embedded steel concrete column, wherein the steel core column has four T-shaped plates and a plurality of reinforcing rib plates;

[0006] The webs of the four T-shaped plates are welded as a whole in a cross-shaped butt joint structure on the plane, and there is an open butt joint between two adjacent T-shaped plates;

[0007] Several stiffening rib plates are divided into four groups, and multiple stiffening rib plates in each group are welded at intervals along the height direction of the steel core column at the butt joint between two adjacent T-shaped plates.

[0008] Furthermore, on the wall plate of the T-shaped plate, several anchor rods are convexly formed and arranged at intervals.

[0009] Still further, the anchor rod is of a T-shaped structure, and the large head end is far away from the wall plate of the corresponding T-shaped plate.

[0010] The steel core column with the above technical measures is integrally formed by the centripetal welding of four T-shaped steel bars to form an approximate "field" - shaped structure, thus forming an I-shaped structural steel with a two-way cross. At the same time, at the butt joint between adjacent T-shaped steel bars, a stiffening rib plate is used for integral connection to support and strengthen the butt joint between adjacent T-shaped steel bars, so as to improve its structural stiffness and obtain high load-bearing performance, which is superior to a single I-shaped structural steel. Moreover, the stiffening rib plate at the butt joint between adjacent T-shaped steel bars can form a firm anchoring structure during the casting process of the surrounding reinforced concrete, which is beneficial to further improving the load-bearing performance of the formed embedded steel-concrete column. In addition, compared with the technology of CN 116464218 A, the above technical measures simplify the forming structure of the steel core column significantly while meeting the high load-bearing performance, that is, it realizes forming with a relatively simple structure, which is beneficial to reducing the construction technical difficulty.

[0011] As one of the preferred technical solutions, the steel core column also has a base welded at the bottom end of the whole column body, and the base extends radially from the column body;

[0012] Corresponding to the anchor bolts embedded in the concrete foundation, bolt through-holes for each anchor bolt to pass through are provided on the base outside the column body;

[0013] When the steel core column is erected and arranged on the concrete foundation, it is connected by穿装 (should be 'passing through and installing') the base at the bottom end with the anchor bolts embedded in the concrete foundation.

[0014] Furthermore, for the steel core column connected to the concrete foundation, the base is located on the adjusting bolts pre-connected to each anchor bolt.

[0015] The steel core column with the above technical measures is easy to be assembled and formed with high verticality on the concrete foundation, which is beneficial to reducing the construction technical difficulty.

[0016] As one of the preferred technical solutions, the steel core column is divided into multiple sections in the height direction;

[0017] For two adjacent sections of the steel core column, the upper section of the core column is located at the top of the lower section of the core column in the height direction, and the two are combined into a whole by a structure in which a transition connecting plate is bolted at their transition part;

[0018] A convex lower connecting ear is welded at the upper part of each wall plate of the four T-shaped plates at the lower section of the core column, and each lower connecting ear has a plurality of bolt through holes arranged at intervals along the height direction;

[0019] At the lower part of each wall plate of the four T-shaped plates at the upper section of the core column, a convex upper connecting ear is welded, and each upper connecting ear has a plurality of bolt through holes arranged at intervals along the height direction;

[0020] When the bottom end of the upper section of the stem is located at the top end of the lower section of the stem, the four upper connecting ears at the lower part of the upper section of the stem form a one-to-one corresponding matching relationship with the four lower connecting ears at the upper part of the lower section of the stem;

[0021] At each set of connecting ears in a one-to-one corresponding relationship, at least one transition connecting plate vertically spanning the upper connecting ears and the lower connecting ears is connected by multiple bolts.

[0022] Furthermore, on a group of adjacent T-shaped plates in the lower section of the core column, a lower support plate with a convex shape is welded on the wall plate corresponding to the lower connecting ear;

[0023] Correspondingly, on a group of adjacent T-shaped plates in the upper section of the core column, an upper support plate with an outwardly convex shape is welded on the wall plate corresponding to the upper connecting ear;

[0024] When the upper section of the core column is located at the top of the lower section of the core column according to the corresponding orientation of the support plate, the upper support plate and the lower support plate in the same orientation form a one-to-one corresponding matching relationship in the upper and lower positions;

[0025] At each set of support plates in a one-to-one matching relationship, a jack is arranged to adjust the verticality between two adjacent sections of steel core columns before they are fastened.

[0026] The steel core column of the above technical measures is formed in a segmented combined structure to meet the technical requirements of large-size and high structures, thereby reducing the technical difficulty of forming each segment of the steel core column. At the same time, the two adjacent segments of the steel core column in the height direction are assembled into a whole with multiple sets of transition connecting plates distributed around the circumference, and the overall structural rigidity is basically not affected. In addition, based on the segmented combined structure of the steel core column, during the construction process, the verticality can be adjusted by two sets of jacks arranged in adjacent directions to ensure the high-precision technical requirements of the construction process.

[0027] The beneficial technical effects of the present utility model are as follows: The steel core column of the above technical measures is formed by the centripetal welding of four T-shaped steel sections to form an approximate "field" - shaped structure, thus forming an I-shaped structural steel with a two-way cross. At the same time, at the butt joint between adjacent T-shaped steel sections, reinforcing rib plates are used for integral connection to support and strengthen the butt joint between adjacent T-shaped steel sections, thereby improving its structural stiffness and obtaining high load-bearing performance, which is superior to a single I-shaped structural steel. Moreover, the reinforcing rib plates at the butt joint between adjacent T-shaped steel sections can form a firm anchoring structure during the casting process of the surrounding reinforced concrete, which is beneficial to further improving the load-bearing performance of the formed embedded steel-concrete column.

[0028] In addition, compared with the technology of CN 116464218 A, the above technical measures simplify the formed structure of the steel core column while meeting the high load-bearing performance, that is, it realizes the formation with a relatively simple structure, which is beneficial to reducing the construction technical difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the present utility model.

[0030] Figure 2 is Figure 1 a schematic structural diagram of the lower section of the core column in

[0031] Figure 3 is Figure 2 a top view of

[0032] Figure 4 is Figure 1 a schematic structural diagram of the upper section of the core column in

[0033] Figure 5 is Figure 4 a top view of

[0034] The meanings of the codes in the figures: 1 - T-shaped plate; 11 - wall plate; 12 - web plate; 2 - reinforcing rib plate; 3 - anchor rod; 4 - lower connecting ear; 5 - lower support plate; 6 - upper connecting ear; 7 - upper support plate; 8 - transition connecting plate; 9 - base; 10 - anchor bolt; A - lower section of the core column; B - upper section of the core column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present utility model relates to a load-bearing structure for buildings, specifically a steel core column structure for an embedded steel-concrete column. The main technical solutions of the present utility model will be specifically described below in combination with multiple embodiments. Among them, Embodiment 1 is combined with the specification drawings - that is Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5Clearly and detailedly explain the technical solution content of the present utility model; although other embodiments are not separately drawn, their main structures can still refer to the drawings of Embodiment 1.

[0036] It should be specifically noted here that the drawings of the present utility model are schematic. In order to clarify the technical purpose of the present utility model, unnecessary details have been simplified to avoid obscuring the technical solution contributed by the present utility model to the prior art. In addition, expressions such as "about" and "substantially" regarding quantity or mating relationship in the following text mean that reasonable assembly errors, processing errors, etc. in the industry are allowed to exist, rather than literally expressing absolute quantity or mating relationship.

[0037] Embodiment 1

[0038] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0039] Specifically, the steel core column has four T-shaped plates 1 and several reinforcing rib plates 2. The T-shaped plate 1 is a T-shaped steel plate structure, which has a wall plate 11 and a web 12 integrally formed in a T shape. The four T-shaped plates 1 are circumferentially and evenly arranged with the inner ends of their respective webs 12 as the center points, so that the webs 12 of the four T-shaped plates 1 are welded into a whole in a cross-shaped butt joint structure, forming an approximate "field" shaped structure. Of course, there are open butt joints between adjacent two T-shaped plates 1. The reinforcing rib plate 2 is a steel plate structure. Corresponding to the four butt joints between the four T-shaped plates 1 in the circumferential direction, several reinforcing rib plates 2 are divided into four groups; each group of reinforcing rib plates 2 has multiple pieces, and these reinforcing rib plates 2 are arranged at intervals along the height direction of the steel core column. Each reinforcing rib plate 2 is welded at the butt joint between adjacent two T-shaped plates 1, basically forming a triangular stable support for the adjacent two T-shaped plates 1.

[0040] In order to form a high-strength combination with the surrounding reinforced concrete during construction, several anchor rods 3 are welded on the wall plate 11 of each T-shaped plate 1 and are arranged at intervals between adjacent anchor rods 3. Each anchor rod 3 is formed in a T shape, and its large head end is far from the wall plate 11 of the corresponding T-shaped plate 1.

[0041] The above is the forming structure of each section of the steel core column.

[0042] The two adjacent sections of the steel core column of the above structure, when forming a whole, are composed of the structure in which the upper section B of the core column is located on the top of the lower section A of the core column in the height direction, and the transition connecting plate 8 is connected by bolts at the transition between the two to form a whole.

[0043] Specifically, the upper part of each wall plate 11 of the four T-shaped plates 1 of the lower section A of the core column is welded with a convex lower connecting ear 4. Each lower connecting ear 4 has a plurality of bolt through holes arranged at intervals along the height direction.

[0044] At the lower part of each wall plate 11 of the four T-shaped plates 1 of the upper section B of the core column, a convex upper connecting ear 6 is welded. A plurality of bolt through holes are arranged at intervals along the height direction on each upper connecting ear 6.

[0045] When the bottom end of the upper section B of the core column of the above structure is located at the top end of the lower section A of the core column of the above structure, the four upper connecting ears 6 at the lower part of the upper section B of the core column form a one-to-one matching relationship with the four lower connecting ears 4 at the upper part of the lower section A of the core column in the upper and lower positions, that is, four groups of connecting ears in a one-to-one matching relationship. At both sides of each group of connecting ears in a one-to-one matching relationship, two transition connecting plates 8 vertically spanning the upper connecting ears 6 and the lower connecting ears 4 are connected by multiple bolts, and the two transition connecting plates 8 are locked as a whole between the same group of upper connecting ears 6 and the lower connecting ears 4 by multiple bolts.

[0046] The docking combination structure of the core column lower section A and the core column upper section B needs to adjust their verticality in the height direction. Based on the influence of their own weight and the accuracy of verticality, precise fine-tuning is performed by using a jack.

[0047] More specifically, on one group of adjacent T-shaped plates 1 of the lower section A of the core column, a lower support plate 5 with a convex shape is welded on the wall plate 11 at the corresponding lower connecting ear 4, and the lower support plate 5 extends from the corresponding lower connecting ear 4. Correspondingly, on one group of adjacent T-shaped plates 1 of the upper section B of the core column, a upper support plate 7 with a convex shape is welded on the wall plate 11 at the corresponding upper connecting ear 6, and the upper support plate 7 extends from the corresponding upper connecting ear 6. When the upper section B of the core column is located at the top of the lower section A of the core column according to the corresponding orientation of the support plates, the upper support plate 7 and the lower support plate 5 in the same orientation form a one-to-one corresponding matching relationship in the upper and lower positions, thus forming two groups of support plate combinations with a one-to-one corresponding matching relationship. Before tightening two adjacent sections of steel core columns, when adjusting the verticality, a group of jacks are arranged at each set of one-to-one corresponding support plates, that is, in the area where the corresponding connecting ears of the upper support plate 7 and the lower support plate 5 corresponding to the upper and lower positions extend. The jacks are used to adjust the verticality between the two adjacent sections of steel core columns at their respective positions. Comprehensive adjustment can be achieved by two groups of jacks arranged in different positions.

[0048] For the steel core column with the above structure, at the bottom end, in this embodiment, it is the bottom end of the lower section A of the core column, and a base 9 is welded. The base 9 is made of a steel plate structure and extends radially from the column body of the steel core column. On the foundation where the steel core columns are arranged, a plurality of anchor bolts 10 are pre-buried through a reinforced concrete foundation. Therefore, bolt through-holes corresponding to the respective anchor bolts 10 and for the respective anchor bolts 10 to pass through are formed in the base 9 on the outer periphery of the column. When the steel core columns are erected and arranged on the concrete foundation, they are穿装连接(此处原文表述有误,推测应为“connected by passing through”) with the respective anchor bolts 10 pre-buried in the concrete foundation through the base 9 at the bottom end. Of course, in order to adjust the verticality of the steel core columns erected and arranged on the concrete foundation, for the steel core columns connected to the concrete foundation, the base 9 is located on the adjusting bolts pre-connected to the respective anchor bolts 10, and the verticality of the lower section A of the core column on the concrete foundation is adjusted by the up and down rotation of the adjusting bolts on the anchor bolts 10.

[0049] Embodiment 2

[0050] The steel core column of the present utility model has four T-shaped plates, several reinforcing rib plates and a base.

[0051] Specifically, the T-shaped plate is of a T-shaped steel plate structure, which has a wall plate and a web plate integrally formed in a T shape. The four T-shaped plates are circumferentially and evenly arranged with the inner ends of their respective webs as the center points, so that the webs of the four T-shaped plates are welded into a whole in a cross-shaped butt joint structure on the plane, forming an approximate "field" shaped structure. Of course, there are open butt joints between adjacent two T-shaped plates.

[0052] The reinforcing rib plates are of a steel plate structure. Corresponding to the four butt joints between the four T-shaped plates in the circumferential direction, several reinforcing rib plates are divided into four groups. Each group of reinforcing rib plates is composed of multiple plates. These reinforcing rib plates are arranged at intervals along the height direction of the steel core column. Each reinforcing rib plate is welded at the butt joint between adjacent two T-shaped plates, basically forming a triangular stable support for the adjacent two T-shaped plates.

[0053] In order to form a high-strength combination with the surrounding reinforced concrete during construction, on the wall plate of each T-shaped plate, several outwardly protruding anchor rods are welded, and the adjacent anchor rods are arranged at intervals. Each anchor rod is formed in a T shape, and its large head end is far from the wall plate of the corresponding T-shaped plate.

[0054] For the steel core column with the above structure, a base is welded at the bottom end. The base is a steel plate structure and extends radially from the column body of the steel core column. On the foundation where the steel core columns are arranged, a plurality of anchor bolts are pre-buried through a reinforced concrete foundation. Therefore, bolt perforations corresponding to the respective anchor bolts and for the respective anchor bolts to pass through are provided on the base around the column body. When the steel core columns are erected and arranged on the concrete foundation, they are穿装连接(此处原文可能有误,推测是“connected by passing through”) with the respective anchor bolts pre-buried in the concrete foundation through the base at the bottom end. Of course, in order to adjust the verticality of the steel core columns erected and arranged on the concrete foundation, for the steel core columns connected to the concrete foundation, the base is located on the adjusting bolts pre-connected to the respective anchor bolts, and the verticality of the steel core columns on the concrete foundation is adjusted by the up and down rotation of the adjusting bolts on the anchor bolts.

[0055] Embodiment 3

[0056] The steel core column of the present utility model has four T-shaped plates, several reinforcing rib plates and a base.

[0057] Specifically, the T-shaped plate is a T-shaped steel plate structure, which has a wall plate and a web plate integrally formed in a T shape. The four T-shaped plates are circumferentially and evenly arranged with the inner ends of their respective webs as the center points, so that the webs of the four T-shaped plates are welded into a whole in a cross-shaped docking structure on the plane, forming an approximate "field" shaped structure. Of course, there are open docking seams between adjacent two T-shaped plates.

[0058] The reinforcing rib plates are steel plate structures. Corresponding to the four docking seams between the four T-shaped plates in the circumferential direction, several reinforcing rib plates are divided into four groups. Each group of reinforcing rib plates has multiple pieces, and these reinforcing rib plates are arranged at intervals along the height direction of the steel core column. Each reinforcing rib plate is welded at the docking seam between adjacent two T-shaped plates, basically forming a triangular stable support for the adjacent two T-shaped plates.

[0059] In order to eliminate the pouring dead angles of the reinforced concrete and improve the bonding strength with the reinforced concrete, a plurality of drainage holes communicating the top and bottom sides are arranged on the above-mentioned reinforcing rib plates, and anchor rods protruding from the top side and the bottom side respectively are welded on the reinforcing rib plates in the non-drainage hole area.

[0060] In order to form a high-strength bond with the surrounding reinforced concrete during construction, several anchor rods protruding outward are also welded on the wall plate of each T-shaped plate, and the adjacent anchor rods are arranged at intervals. Each anchor rod is formed in a T shape, and its large head end is far from the wall plate of the corresponding T-shaped plate.

[0061] The steel core column of the above structure has a base welded at the bottom end, and the base is a steel plate structure, which extends radially from the steel core column body. On the foundation where the steel core column is arranged, a plurality of anchor bolts are pre-buried through the reinforced concrete foundation. Therefore, bolt through holes corresponding to the anchor bolts are opened on the base outside the column body for the installation of the anchor bolts. When the steel core column is arranged vertically on the concrete foundation, it is connected to the anchor bolts pre-buried in the concrete foundation through the base at the bottom. Of course, in order to adjust the verticality of the vertical arrangement on the concrete foundation, the base of the steel core column connected to the concrete foundation is located on the adjusting bolts pre-connected to the anchor bolts, and the verticality of the steel core column on the concrete foundation is adjusted by the up and down rotation of the adjusting bolts on the anchor bolts. The above embodiments are only used to illustrate the utility model, but not to limit it.

[0062] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A steel core column structure for an embedded steel-concrete column, characterized in that: The steel core column comprises four T-shaped plates (1) and a plurality of reinforcing rib plates (2); The webs (12) of the four T-shaped plates (1) are welded together in a cross-shaped butt joint structure on a plane, and an open butt joint is provided between two adjacent T-shaped plates (1); The plurality of reinforcing rib plates (2) are divided into four groups, and the plurality of reinforcing rib plates (2) in each group are welded at intervals along the height direction of the steel core column at the butt joint between two adjacent T-shaped plates (1).

2. The steel core column structure for embedded steel concrete column according to claim 1, characterized in that: A plurality of anchor rods (3) arranged at intervals are formed protrudingly on the wall plate (11) of the T-shaped plate (1).

3. The steel core column structure for embedded steel concrete column according to claim 2, characterized in that: The anchor rod (3) is a T-shaped structure, with the large end being away from the wall plate (11) corresponding to the T-shaped plate (1).

4. The steel core column structure for embedded steel concrete column according to claim 1, characterized in that: The steel core column also has a base (9) welded to the bottom end of the entire column body, and the base (9) extends radially from the column body; Corresponding to the anchor bolts (10) embedded in the concrete foundation, the base (9) on the periphery of the column is provided with bolt through holes for the anchor bolts (10) to pass through; When the steel core column is arranged vertically on the concrete foundation, it is connected to the anchor bolts (10) pre-buried in the concrete foundation through the base (9) at the bottom end.

5. The steel core column structure for embedded steel concrete column according to claim 4, characterized in that: The steel core column is connected to the concrete foundation, and the base (9) is seated on the adjustment bolts pre-connected on the anchor bolts (10).

6. The steel core column structure for embedded steel concrete column according to claim 1 or 4, characterized in that: The steel core column is divided into multiple sections in the height direction; The two adjacent steel core columns are assembled into a whole by a structure in which the upper core column section (B) is located at the top of the lower core column section (A) in the height direction and a transition connecting plate (8) is connected by bolts at the transition between the two sections; At the upper part of each wall plate (11) of the four T-shaped plates (1) of the lower section (A) of the core column, a lower side connecting ear (4) with an outwardly convex shape is welded, and each lower side connecting ear (4) has a plurality of bolt through holes arranged at intervals along the height direction; At the lower part of each wall plate (11) of the four T-shaped plates (1) of the upper section (B) of the core column, an outwardly convex upper connecting ear (6) is welded, and each upper connecting ear (6) has a plurality of bolt through holes arranged at intervals along the height direction; When the bottom end of the core column upper section (B) is located at the top end of the core column lower section (A), the four upper connecting ears (6) at the lower part of the core column upper section (B) and the four lower connecting ears (4) at the upper part of the core column lower section (A) form a one-to-one matching relationship in upper and lower positions; At each set of connecting ears in a one-to-one matching relationship, at least one transition connecting plate (8) vertically spanning the upper connecting ear (6) and the lower connecting ear (4) is connected by a plurality of bolts.

7. The steel core column structure for embedded steel concrete column according to claim 6, characterized in that: On a group of adjacent T-shaped plates (1) of the lower section (A) of the core column, a lower support plate (5) with an outward protrusion is welded on the wall plate (11) at the corresponding lower connecting ear (4); Correspondingly, on a group of adjacent T-shaped plates (1) of the upper section (B) of the core column, an upper support plate (7) with an outwardly convex shape is welded on the wall plate (11) at the corresponding upper connecting ear (6); When the core column upper section (B) is located at the top of the core column lower section (A) according to the corresponding orientation of the support plates, the upper support plates (7) and the lower support plates (5) in the same orientation form a one-to-one corresponding matching relationship in the upper and lower positions; At each set of support plates in a one-to-one matching relationship, a jack is arranged to adjust the verticality between two adjacent sections of steel core columns before they are fastened.

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