Foundation structure of concrete-filled steel tubular column wrapped with concrete in constructional engineering

Abstract

The utility model discloses a concrete-filled steel tube column wrapped concrete foundation structure in constructional engineering, which comprises a concrete base layer, a plurality of embedded steel bars are embedded in an inner cavity of the concrete base layer, a plurality of stirrups are hooped on the surfaces of the embedded steel bars, a steel tube column is arranged above the concrete base layer, and the steel tube column is connected with the concrete base layer. An embedded plate is welded to the bottom of the steel pipe column, a plurality of connecting assemblies are arranged at the bottom of the embedded plate, a plurality of reinforcing assemblies are arranged at the bottom of the surface of the steel pipe column, each reinforcing assembly comprises an embedded bar embedded in a concrete base layer, the embedded bars are welded to the outer surfaces of stirrups, and threaded sleeves are welded to the tops of the embedded bars. The concrete base layer, the embedded steel bars and the stirrups are used in cooperation, an installation foundation is formed for the steel pipe column and the embedded plate, meanwhile, the reinforcing assembly and the concrete wrapping layer are used in cooperation, the bottom of the surface of the steel pipe column is wrapped and fixed, and the purposes of high connection strength and stable and firm supporting can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a concrete foundation structure for steel-concrete composite columns in building engineering. Background Technology

[0002] In construction engineering, steel-concrete composite columns are steel-concrete composite structural components composed of steel pipes and concrete. Concrete is filled inside the steel pipes, and through the synergistic work of the steel pipes and concrete, the advantages of both materials are fully utilized to form high-performance structural components.

[0003] Concrete-tube steel columns are widely used in high-rise buildings, bridges, ports, and other projects due to their high strength, high toughness, and ease of construction. However, the foundation connection points are prone to anchorage failure or concrete cracking due to complex stress. The embedded plates at bolt connection points are also prone to warping, leading to stress concentration. Therefore, it is necessary to provide a concrete-encased foundation structure for concrete-tube steel columns in building engineering. This structure uses pre-embedded bolts for priority anchoring and is combined with an external reinforced concrete column base protection design. This solves the problems of insufficient connection strength, complex construction, and poor durability of concrete-tube steel column foundations, ensuring the safety and reliability of concrete-tube steel structures. Utility Model Content

[0004] The purpose of this utility model is to provide a concrete-encased foundation structure for steel-concrete composite columns in building engineering. It adopts a design that prioritizes anchoring with pre-embedded bolts and is combined with a protective design for the external reinforced concrete column foot foundation. This solves the problems of insufficient connection strength, complex construction, and poor durability of steel-concrete composite column foundations, and ensures the safety and reliability of steel-concrete composite structures, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A concrete foundation structure for steel pipe concrete columns in building engineering includes a concrete base layer: multiple embedded steel bars are pre-embedded in the inner cavity of the concrete base layer, and multiple stirrups are provided on the surface of the multiple embedded steel bars. A steel pipe column is set above the concrete base layer. An embedded plate is welded to the bottom of the steel pipe column. Multiple connecting components are provided at the bottom of the embedded plate. Multiple reinforcing components are provided at the bottom of the surface of the steel pipe column. The reinforcing components include embedded bars pre-embedded inside the concrete base layer. The embedded bars are welded to the outer surface of the stirrups. A threaded sleeve is welded to the top of the embedded bars. A threaded pin is threadedly connected to the inner cavity of the threaded sleeve. Four annularly distributed reinforcing plates are welded to the bottom of the surface of the steel pipe column. A concrete wrapping layer is poured on the top of the concrete base layer. The concrete wrapping layer covers the surface of the reinforcing plates, embedded bars, and embedded plates.

[0006] Preferably, the connecting assembly includes embedded bolts pre-embedded inside the concrete base layer, the embedded bolts being welded to the inner surface of the stirrups, and pads being provided at the top and bottom of the embedded plate, with two locking nuts threadedly connected to the top of the surface of the embedded bolts.

[0007] Preferably, the surface of the pad is threaded with a leveling nut, the top of which contacts the bottom of the embedded plate.

[0008] Preferably, the two pads are tightly fitted to the surface of the embedded plate by the threaded compression of the leveling nut and the locking nut.

[0009] Preferably, the top of the reinforcing plate is provided with an arc-shaped groove, and the threaded pin passes through the inner cavity of the arc-shaped groove.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model forms an installation foundation for steel pipe columns and embedded plates through the combined use of concrete base, pre-embedded steel bars and stirrups. At the same time, the combined use of reinforcing components and concrete wrapping layer wraps and fixes the bottom of the steel pipe column surface, thereby achieving the purpose of high connection strength and stable and reliable support.

[0012] 2. This utility model provides high-strength connection points for the installation of the embedded plate by setting up the connecting components, including the setting of pre-embedded bolts. At the same time, with the cooperation of the pad, leveling nut and locking nut, the pre-embedded bolts and the embedded plate are stabilized, thereby enabling stable installation of the steel pipe column.

[0013] 3. This utility model uses a combination of reinforcing plates and arc-shaped grooves to reinforce the bottom of the steel pipe column surface with the concrete base layer. At the same time, the arc-shaped grooves allow for accurate installation according to the position of the pre-embedded reinforcement bars. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a front cross-sectional view of one embodiment of the present invention;

[0016] Figure 2 This is a three-dimensional schematic diagram of pre-embedded reinforcing bars, stirrups, and connecting components according to one embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional exploded view of the pre-embedded steel bars, stirrups, and reinforcing components in one embodiment of the present invention;

[0018] Figure 4 This is a three-dimensional schematic diagram of a steel pipe column, an embedded plate, and a reinforcing component according to an embodiment of the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Concrete base layer; 2. Embedded steel bars; 3. Stirrups; 4. Steel pipe column; 5. Embedded plate; 6. Connecting components; 61. Embedded bolts; 62. Leveling nuts; 63. Washers; 64. Locking nuts; 7. Reinforcing components; 71. Embedded bars; 72. Threaded sleeves; 73. Threaded pins; 74. Reinforcing plates; 75. Arc-shaped slots; 8. Concrete wrapping layer. Detailed Implementation

[0021] In the following description, embodiments of the steel-concrete composite column encased in concrete foundation in building engineering according to the present invention will be described with reference to the accompanying drawings.

[0022] Figure 1-4 This invention illustrates a concrete foundation structure for a steel-concrete composite column in a building construction project, comprising a concrete base 1. Multiple embedded steel bars 2 are pre-embedded within the inner cavity of the concrete base 1. Multiple stirrups 3 are attached to the surface of the embedded steel bars 2. A steel-concrete composite column 4 is positioned above the concrete base 1. An embedded plate 5 is welded to the bottom of the steel-concrete composite column 4. Multiple connecting components 6 are provided at the bottom of the embedded plate 5. Each connecting component 6 includes embedded bolts 61 pre-embedded inside the concrete base 1. The embedded bolts 61 are welded to the inner surface of the stirrups 3. On the surface of the embedded plate 5, both the top and bottom are provided with pads 63. Two locking nuts 64 are threadedly connected to the top of the embedded bolt 61. A leveling nut 62 is threadedly connected to the surface of the pad 63. The top of the leveling nut 62 contacts the bottom of the embedded plate 5. The two pads 63 are tightly fitted to the surface of the embedded plate 5 by the threaded compression of the leveling nut 62 and the locking nut 64. Through the setting of the connecting assembly 6, including the embedded bolt 61, a high-strength connection point is provided for the installation of the embedded plate 5. Meanwhile, on the pads... 63. The combined use of the leveling nut 62 and the locking nut 64 stabilizes the embedded bolt 61 and the embedded plate 5, thereby ensuring stable installation of the steel pipe column 4. Multiple reinforcing components 7 are provided at the bottom of the surface of the steel pipe column 4. These reinforcing components 7 include embedded reinforcing bars 71 embedded inside the concrete base layer 1. The embedded reinforcing bars 71 are welded to the outer surface of the stirrups 3. A threaded sleeve 72 is welded to the top of the embedded reinforcing bars 71, and a threaded pin 73 is threaded into the inner cavity of the threaded sleeve 72. Four annularly distributed... The reinforcing plate 74 has a concrete wrapping layer 8 poured on top of the concrete base 1. The concrete wrapping layer 8 covers the surface of the reinforcing plate 74, the embedded reinforcement 71, and the embedded plate 5. The top of the reinforcing plate 74 has an arc-shaped groove 75, and the threaded pin 73 passes through the inner cavity of the arc-shaped groove 75. Through the cooperation of the reinforcing plate 74 and the arc-shaped groove 75, the bottom of the surface of the steel pipe column 4 is connected and reinforced with the concrete base 1. At the same time, the arc-shaped groove 75 can be set to accurately install according to the position of the embedded reinforcement 71.

[0023] Working Principle: When using this utility model, the user first excavates a foundation pit on the ground, then arranges the pre-embedded steel bars 2 and stirrups 3, and ties them together with wire. Next, the pre-embedded reinforcing bars 71 and pre-embedded bolts 61 are positioned and distributed, and then welded and fixed to the stirrups 3. Afterwards, formwork is erected on the surface of the stirrups 3, and the concrete base 1 is poured. Once the concrete base 1 has completely solidified, the user screws the leveling nuts 62 onto the surface of the pre-embedded bolts 61, keeping multiple leveling nuts 62 at the same horizontal height. A pad 63 is placed on top of the leveling nuts 62 and fitted onto the surface of the pre-embedded bolts 61. Then, the steel pipe column 4 is moved to the top of the concrete base 1, so that the pre-embedded plate 5 is fitted onto the multiple pre-embedded bolts 61. The surface of the embedded bolt 61 is positioned so that the top of the embedded plate 5 contacts the top of the pad 63. Then, another pad 63 is placed on the surface of the embedded bolt 61, and the two locking nuts 64 are rotated to tighten them, so that the two pads 63 clamp and fix the embedded plate 5. At this time, the steel pipe column 4 is installed stably. Next, the user welds the reinforcing plate 74 to the surface of the steel pipe column 4, so that the bottom of the reinforcing plate 74 contacts the top of the threaded sleeve 72. The threaded pin 73 is inserted into the inner cavity of the arc-shaped groove 75, and the threaded pin 73 is rotated into the inner cavity of the threaded sleeve 72 to clamp and fix the reinforcing plate 74. Finally, a formwork is erected on the top of the concrete base 1, and a concrete wrapping layer 8 is poured to wrap the bottom of the reinforcing plate 74, the embedded plate 5, and the surface of the steel pipe column 4.

[0024] In summary, the concrete foundation structure for the steel-concrete composite column in this construction project, through the combined use of concrete base layer 1, embedded steel bars 2 and stirrups 3, forms an installation foundation for the steel-concrete composite column 4 and embedded plate 5. At the same time, with the combined use of reinforcing components 7 and concrete wrapping layer 8, the bottom of the surface of the steel-concrete composite column 4 is wrapped and fixed, thus achieving the purpose of high connection strength and stable and reliable support.

Claims

1. A concrete foundation structure for steel-concrete composite columns in building construction, characterized in that, The system includes a concrete base (1): multiple embedded steel bars (2) are pre-embedded in the inner cavity of the concrete base (1), and multiple stirrups (3) are provided on the surface of the multiple embedded steel bars (2). A steel pipe column (4) is provided above the concrete base (1), and an embedded plate (5) is welded to the bottom of the steel pipe column (4). Multiple connecting components (6) are provided at the bottom of the embedded plate (5), and multiple reinforcing components (7) are provided at the bottom of the surface of the steel pipe column (4). The reinforcing components (7) include components pre-embedded in the concrete base (1). The embedded reinforcement (71) is welded to the outer surface of the stirrup (3). The top of the embedded reinforcement (71) is welded with a threaded sleeve (72). The inner cavity of the threaded sleeve (72) is threaded with a threaded pin (73). The bottom of the surface of the steel pipe column (4) is welded with four ring-shaped reinforcing plates (74). The top of the concrete base (1) is filled with a concrete wrapping layer (8). The concrete wrapping layer (8) covers the surface of the reinforcing plate (74), the embedded reinforcement (71) and the embedded plate (5).

2. The steel-concrete composite column encased in concrete foundation structure in building engineering according to claim 1, characterized in that, The connecting assembly (6) includes a pre-embedded bolt (61) embedded in the concrete base (1), the pre-embedded bolt (61) being welded to the inner surface of the stirrup (3), and a pad (63) being provided at the top and bottom of the pre-embedded plate (5). Two locking nuts (64) are threadedly connected to the top of the surface of the pre-embedded bolt (61).

3. The steel-concrete composite column encased in concrete foundation structure in building engineering according to claim 2, characterized in that, The surface of the pad (63) is threaded with a leveling nut (62), the top of which contacts the bottom of the embedded plate (5).

4. The steel-concrete composite column encased in concrete foundation structure in building engineering according to claim 3, characterized in that, The two pads (63) are tightly pressed against the surface of the embedded plate (5) by the threads of the leveling nut (62) and the locking nut (64).

5. The steel-concrete composite column encased in concrete foundation structure in building engineering according to claim 4, characterized in that, The top of the reinforcing plate (74) is provided with an arc-shaped groove (75), and the threaded pin (73) penetrates into the inner cavity of the arc-shaped groove (75).

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