Hybrid three-limb latticed column

Abstract

The utility model discloses a mixed type three-limb latticed column which comprises three limb columns distributed in a triangular mode to form a triangular support and a connecting steel plate connected between one adjacent limb column, the other adjacent limb columns are connected through lacing bars, and the connecting steel plate is of a steel plate-concrete combined structure. A triangular supporting structure formed by the three limb columns, the lacing bars and the connecting steel plates is high in structural stability, high in bearing capacity, large in lateral stiffness resistance, not prone to inclination and deformation, small in space occupancy rate of the structure and high in universality.

Description

Technical Field

[0001] The utility model relates to a three-limb lattice column used in the field of industrial buildings and bridges, in particular to a mixed three-limb lattice column. Background Art

[0002] The traditional three-legged lattice column is composed of three steel limbs and tie rods connecting the limbs. With the increase of crane loads in industrial plants or the increase of bridge pier height, the demand for the bearing capacity and lateral stiffness of the three-legged lattice column increases, resulting in an increase in the cross-sectional size of the traditional steel three-legged column, an increase in the amount of steel used, and a decrease in the economic efficiency of the structure. At present, the load-bearing components in heavy industrial plants such as metallurgy and machinery are inevitably corroded by high temperatures. The traditional steel three-legged column has high requirements for the environment. Under the erosion of high environmental temperatures, its structure and performance may be adversely affected. With the continuous increase in the tonnage of overhead crane equipment and the continuous increase in the frequency of use, the traditional three-legged column often vibrates violently due to the decline of stiffness. Therefore, it is necessary to seek an economical and reasonable method to improve the bearing capacity and stiffness of the three-legged lattice column. Utility Model Content

[0003] In view of this, an object of the utility model is to provide a hybrid three-limb lattice column to improve the bearing capacity and rigidity of the three-limb lattice column.

[0004] The hybrid three-limb lattice column of the utility model comprises three limbs distributed in a triangular shape to form a triangular support, and a connecting steel plate connected between two adjacent limbs, and the other two adjacent limbs are connected by tie rods, and the connecting steel plate is a steel plate-concrete composite structure;

[0005] Furthermore, the connecting steel plate is arranged to have the same length as the adjacent limb columns and is connected to the two adjacent limb columns as a whole;

[0006] Furthermore, the connecting steel plate is a double-sided steel plate-concrete structure formed by filling concrete in a cavity surrounded by two parallel steel plates and limbs connected thereto;

[0007] Furthermore, when the width-to-thickness ratio of the cavity section enclosed by the two parallel steel plates and the connected limb column is greater than 2, stiffeners are provided on the two parallel steel plates;

[0008] Furthermore, the stiffener is a stud, a tension bolt or a steel plate;

[0009] Furthermore, the two parallel steel plates are one of a transverse rib corrugated steel plate, a vertical rib corrugated steel plate, and a flat steel plate;

[0010] Furthermore, the transverse rib corrugated steel plate and the vertical rib corrugated steel plate are open type or closed type;

[0011] Furthermore, the tie rod is one of a hollow circular steel tube, a hollow rectangular steel tube, an H-shaped steel, and an angle steel, and the tie rod is arranged longitudinally along the limb column between two adjacent limb columns in a horizontally parallel, a broken line, or a combination of horizontally parallel and broken line manner;

[0012] Furthermore, the angle between the tie rods and the limbs arranged along the fold line is 30°-60°;

[0013] Furthermore, the limb column is a steel tube concrete limb column, and the cross-section of the limb column is a circle, a rectangle or other polygons.

[0014] The beneficial effects of the utility model: the hybrid three-limb lattice column of the utility model has a triangular support structure formed by three limb columns, tie rods and connecting steel plates, has high structural stability, strong bearing capacity, large lateral rigidity, is not easy to tilt and deform, and has a small space occupancy rate and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of a three-legged steel tube concrete lattice column of Example 1;

[0017] Figure 2 This is a schematic diagram of a three-legged steel tube concrete lattice column of Example 2;

[0018] Figure 3 This is a schematic diagram of a three-legged steel tube concrete lattice column of Example 3;

[0019] In the figure, 1. limb column, 2. tie rod, 3. core concrete, 4. transverse rib corrugated steel plate, 5. vertical rib corrugated steel plate. DETAILED DESCRIPTION

[0020] The hybrid three-limb lattice column of this embodiment includes three limbs 1 distributed in a triangular shape to form a triangular support, and a connecting steel plate connected between two adjacent limbs 1, and the other two adjacent limbs 1 are connected by a tie rod 2, and the connecting steel plate is a steel plate-concrete composite structure; the connecting steel plate is set to be equal in length to the adjacent limbs 1 and connected to the adjacent limbs 1 as a whole; the limbs 1 are three arranged in a set triangle, which can be an equilateral triangle, an isosceles triangle, etc. The limbs 1 are grouped in pairs, one group of limbs 1 is connected as a whole by a connecting steel plate, and the other groups of limbs 1 are connected by a tie rod 2, and the limbs 1, the connecting steel plate and the tie rod 2 are connected by welding, and the tie rod 2 does not contain concrete. The steel plate-concrete composite structure refers to a steel-concrete composite structure formed by the connecting steel plate composed of a steel plate and concrete, which can significantly improve the coupling effect between the two limbs 1, thereby improving the bearing capacity, lateral stiffness and strength of the lattice column, and reducing the vibration of the lattice column.

[0021] In this embodiment, the connecting steel plate is a double-sided steel plate-concrete structure formed by filling concrete in the cavity surrounded by two parallel steel plates and the limb columns 1 connected thereto; two adjacent limb columns 1 at the base of the triangle are connected by two parallel steel plates, and core concrete 3 is filled in the cavity surrounded by the two parallel steel plates and the connected limb columns 1 to form a steel plate-concrete composite structure, which can improve the bearing capacity and lateral resistance of the traditional three-limb column 1 structure and prevent the structure from tilting and deformation.

[0022] In this embodiment, when the width-to-thickness ratio of the cavity section enclosed by the two parallel steel plates and the connected limb column 1 is greater than 2, stiffeners are set on the two parallel steel plates; when the concrete-filled cavity formed by the parallel steel plates is large, it can be reinforced by setting stiffeners to improve the overall strength of the structure, while avoiding the expansion and contraction effect of pouring the core concrete 3 on the steel plate, and avoiding the concrete and steel plate from being emptied. Preferably, the stiffener is a stud, a tension bolt or a steel plate; when a stud is used, the stud is driven into the steel plate in a vertical manner to the steel plate, and the stud is consolidated with the core concrete 3 after pouring the core concrete 3; when a tension bolt is used, the bolts are tensioned based on the two steel plates, and then the core concrete 3 is poured; when a steel plate is used, the steel plate serves as a stiffening rib of the steel plate and a shear key of the steel plate-concrete composite structure.

[0023] In this embodiment, the two parallel steel plates are one of a transverse rib corrugated steel plate 4, a vertical rib corrugated steel plate 5, and a flat steel plate; the transverse rib corrugated steel plate 4 refers to a steel plate with corrugations distributed along the transverse direction (vertical to the limb 1 direction), and the vertical rib corrugated steel plate 5 refers to a steel plate with corrugations distributed along the longitudinal direction (direction of the limb 1). The transverse rib corrugated steel plate 4 and the vertical rib corrugated steel plate 5 are open or closed;

[0024] In this embodiment, the tie rod 2 is one of a hollow circular steel tube, a hollow rectangular steel tube, an H-shaped steel, and an angle steel. The tie rod 2 is arranged longitudinally along the limb column 1 in a horizontal parallel, a folded line, or a combination of horizontal parallel and folded line between two adjacent limb columns 1; the tie rod 2 is a hollow steel tube, and the amount of steel used in the tie rod 2 is small, which improves the economy of the lattice column. The tie material can reduce the space occupancy rate of the lattice column and increase the usable space of the structure. When arranged in a folded line, the angle between the tie rod 2 and the limb column 1 is 30°-60°, ensuring the strength and stability of the structure.

[0025] In this embodiment, the limb column 1 is a steel tube concrete limb column 1, and the cross section of the limb column 1 is a circle, a rectangle or other polygons.

[0026] Embodiment 1

[0027] like Figure 1As shown, a hybrid three-limb lattice column, the lattice column limbs 1 are arranged in a triangular array, the adjacent two limbs on the base of the triangle are connected by two parallel transverse rib corrugated steel plates 4, and the limbs on the vertices of the triangle and the adjacent two limbs on the base are connected by hollow circular steel pipes 2 as connecting rods to form a mixed horizontal arrangement and a broken line arrangement.

[0028] The manufacturing method is to first determine the interval between the three limbs according to the design size, then weld the designed transverse rib corrugated steel plate 4 orthogonally to the two limbs of the triangle base, and then weld the hollow circular steel pipe 2 horizontally and in a broken line to the limbs at the vertices of the triangle and the two limbs of the triangle base, and finally pour the core concrete 3 into the cavity of the three limbs and the cavity surrounded by the two parallel transverse rib corrugated steel plates 4 and the two limbs 1.

[0029] Embodiment 2

[0030] like Figure 2 As shown, a hybrid three-limb lattice column, the lattice column limbs 1 are arranged in a triangular array, the adjacent two limbs on the base of the triangle are connected by two parallel vertical rib corrugated steel plates 5, and the limbs on the vertices of the triangle and the adjacent two limbs on the base are connected by hollow circular steel pipes 2 as connecting rods to form a mixed horizontal arrangement and a broken line arrangement.

[0031] The manufacturing method is to first determine the interval between the three limbs according to the design size, then weld the designed vertical rib corrugated steel plate 5 to the two limbs of the triangle base orthogonally, and then weld the hollow circular steel pipe 2 horizontally and in a broken line to the limbs at the vertices of the triangle and the two limbs of the triangle base, and finally pour the core concrete 3 into the cavity of the three limbs and the cavity surrounded by the two parallel vertical rib corrugated steel plates 5 and the two limbs 1.

[0032] Embodiment 3

[0033] like Figure 3 As shown, a hybrid three-limb lattice column, the lattice column limbs 1 are in a triangular array, the adjacent two limbs on the base of the triangle are connected by two parallel transverse rib corrugated steel plates 4, and the limbs on the vertices of the triangle and the adjacent two limbs on the base are arranged horizontally with hollow circular steel pipes 2 as connecting rods.

[0034] The manufacturing method is to first determine the interval between the three limbs according to the design size, then weld the designed transverse rib corrugated steel plate 4 orthogonally to the two limbs of the triangle base, and then horizontally arrange and weld the hollow circular steel pipe 2 to the limbs at the vertices of the triangle and the two limbs of the triangle base, and finally pour the core concrete 3 into the cavity of the three limbs and the cavity surrounded by the two parallel transverse rib corrugated steel plates 4 and the two limbs 1.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A hybrid three-limb lattice column, characterized in that: It comprises three limbs distributed in a triangle to form a triangular support, and a connecting steel plate connected between two adjacent limbs, and the other two adjacent limbs are connected by tie rods. The connecting steel plate is a steel plate-concrete composite structure.

2. The hybrid three-limb lattice column according to claim 1, characterized in that: The connecting steel plate is arranged with the same length as the adjacent limb columns and is connected with the two adjacent limb columns as a whole.

3. The hybrid three-limb lattice column according to claim 2, characterized in that: The connecting steel plate is a double-sided steel plate-concrete structure formed by filling concrete in a cavity surrounded by two parallel steel plates and limbs connected thereto.

4. The hybrid three-limb lattice column according to claim 3, characterized in that: When the width-to-thickness ratio of the cavity section enclosed by two parallel steel plates and the connected limbs is greater than 2, stiffeners are provided on the two parallel steel plates.

5. The hybrid three-limb lattice column according to claim 4, characterized in that: The reinforcing member is a stud, a tension bolt or a steel plate.

6. The hybrid three-limb lattice column according to claim 3, characterized in that: The two parallel steel plates are one of transverse rib corrugated steel plates, vertical rib corrugated steel plates, and flat steel plates.

7. The hybrid three-limb lattice column according to claim 6, characterized in that: The transverse rib corrugated steel plate and the vertical rib corrugated steel plate are of open type or closed type.

8. The hybrid three-limb lattice column according to claim 1, characterized in that: The tie rod is one of a hollow circular steel pipe, a hollow rectangular steel pipe, an H-shaped steel, and an angle steel. The tie rod is arranged longitudinally along the limb column between two adjacent limb columns in a horizontal parallel, a broken line, or a combination of horizontal parallel and broken line.

9. The hybrid three-limb lattice column according to claim 8, characterized in that: The included angle between the tie rods and limbs arranged along the fold line is 30°-60°.

10. The hybrid three-limb lattice column according to claim 8, characterized in that: The limb column is a steel tube concrete limb column, and the cross section of the limb column is a circle, a rectangle or other polygons.

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