Pre-constraint block steel pipe column and structure

Abstract

The utility model discloses a pre-constraint block steel pipe column and structure. The pre-constraint block steel pipe column comprises a pre-constraint block, concrete, a column steel pipe and transverse stiffeners, the pre-constraint block material comprises a block material and a constraint cage; the block material is arranged in the constraint cage; the constraint cage comprises a cage frame and constraint cage holes; the pre-constraint block material is surrounded by the column steel pipe; the concrete wraps the pre-constraint block material and fills a gap between the pre-constraint block material and the column steel pipe; the transverse stiffener is a steel member and is fixedly connected with the column steel pipe; and the transverse stiffener is arranged corresponding to the horizontal member to be mounted. According to the utility model, the block in the constraint cage and the concrete form the pre-constraint block concrete, so that the excessive crushing of the block is reduced, and the energy consumption and pollution are reduced; through the combined action of the block and the concrete, the bearing capacity and ductility of the pre-restrained block steel pipe column are improved.

Description

Technical Field

[0001] The utility model belongs to the field of structural columns, and particularly relates to a pre-constrained block steel pipe column and a structure. Background Art

[0002] In construction projects, structural columns are often used in frame columns, bridge pier columns, etc. Structural columns are important components of building structures and bridges. They not only bear vertical loads, but also bear horizontal forces from beams and slabs under earthquakes and wind. Structural columns often use steel tube concrete columns, which are composed of concrete, steel bars and steel pipes. This requires a large amount of stone, sand and cement materials. According to statistics, the construction stone in my country accounts for nearly 1 / 2 of the concrete mass. At present, the natural sand and stone that meet the requirements of reinforced concrete structures can no longer meet the needs of the project. In actual projects, a large amount of machine-made sand and machine-made stone are used to crush natural stones into small-sized gravel or sand. This process requires high consumption of electricity, transportation, and labor, and produces a lot of dust. This puts great pressure on our resources and environment. How to reduce the use of cement, small-sized sand and stone in structural columns is of great significance to my country's engineering construction and energy conservation and environmental protection. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a pre-constrained block steel pipe column and structure, which can be used for columns of house buildings and bridge piers, solves the problem of excessive cement, small-size sand and stone in structural columns, and solves the problem of coordinated force between block materials, steel pipes and concrete. The utility model has built-in pre-constrained blocks in the structural columns, which effectively reduces the amount of cement, small-size sand and stone, reduces hydration heat and dust; enhances the coordinated force between steel pipes, concrete and pre-constrained blocks through transverse stiffeners; and enhances the connection and force between blocks and concrete through constraint cages, thereby realizing the mechanical properties of the columns. This technology has the advantages of reliable performance, simple structure, fast construction and green environmental protection.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions.

[0005] A pre-constrained block steel pipe column comprises a pre-constrained block, concrete, a column steel pipe and a transverse stiffener; the pre-constrained block comprises a block and a constraint cage; the block is in the constraint cage; the constraint cage comprises a cage frame and constraint cage holes; the pre-constrained block is surrounded by the column steel pipe; concrete wraps the pre-constrained block and fills the gap between the pre-constrained block and the column steel pipe; the transverse stiffener is a steel component fixedly connected to the column steel pipe; the transverse stiffener is arranged corresponding to the horizontal component to be installed.

[0006] Preferably, the transverse stiffener is located inside the column steel tube; and there is no pre-constrained block material in the area corresponding to the transverse stiffener.

[0007] Preferably, the constraint cage is a constraint rib cage or a grid cage; the constraint cage is closed at the bottom or both ends; the size of the constraint cage hole is smaller than the size of the block material at that location; the cage frame includes a side wall frame and an end closure member; the end closure member is formed by extending the side wall frame or is a dedicated end closure member; the dedicated end closure member is connected to the side wall frame as a whole; there is concrete at the constraint cage hole, so that the concrete inside the constraint cage and the concrete outside the constraint cage are connected as a whole.

[0008] Preferably, the transverse stiffener is a transverse partition; the transverse partition is provided with a hole.

[0009] Preferably, the horizontal member to be installed is a steel beam and / or a steel-framed concrete beam; and the diaphragm is arranged corresponding to the flange of the steel beam and / or the steel-framed concrete beam.

[0010] Preferably, there are two or more transverse partitions, which are arranged up and down; vertical partitions are provided between the transverse partitions, and the vertical partitions are fixedly connected to the column steel pipes.

[0011] Preferably, the transverse stiffener is a transverse steel beam; the transverse steel beam is located inside the column steel pipe, and both ends of the transverse steel beam are fixedly connected to the column steel pipe.

[0012] Preferably, there is a column steel cage inside the column steel pipe; concrete wraps the pre-constrained blocks and the column steel cage, and fills the gaps between the pre-constrained blocks, the column steel cage and the column steel pipe.

[0013] A pre-constrained block steel pipe column structure, wherein the pre-constrained block steel pipe column is fixedly connected with a horizontal member to be installed to form a structure.

[0014] Compared with the prior art, the utility model has the following characteristics and beneficial effects.

[0015] 1. The restraint cage effectively controls the contact mode and contact area of ​​the blocks during construction, so that the concrete can effectively fill the gaps between the blocks, effectively reduce quality defects, improve construction quality, and achieve structural safety. By placing blocks in the column, the amount of cement, sand and stone can be reduced, and the hydration heat of large-volume columns can be reduced during construction, saving energy and reducing emissions. The restraint cage in the column restrains the blocks and concrete to form restrained block concrete, improve the strength and ductility of the combination of blocks and concrete, and achieve the mechanical properties of pre-constrained block steel pipe columns.

[0016] 2. The force from the horizontal components is transmitted through transverse stiffeners; the concrete, column steel pipes and pre-constrained blocks are subjected to force in a coordinated manner through transverse stiffeners. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the vertical section of the pre-constrained block steel pipe column.

[0019] Figure 2 It is a schematic diagram of the transverse section of the pre-constrained block steel pipe column.

[0020] Figure 3 It is a schematic vertical cross-sectional view of the pre-constrained block 9.

[0021] Figure 4 It is a schematic vertical cross-sectional view of a pre-constrained block steel pipe column having a plurality of pre-constrained blocks 9 and positioning members 8.

[0022] Figure 5 Schematic diagram of vertical section of pre-restrained bulk steel tubular column with column reinforcement cage.

[0023] Figure 6 It is a schematic diagram of the vertical section of the connection node of the pre-constrained block steel pipe column and beam.

[0024] Reference numerals:

[0025] 1-block, 2-restraint cage, 2.1-cage frame, 2.1.1-side wall frame, 2.1.2-end closure, 2.2-restraint cage hole, 3-concrete, 4-restraint reinforcement, 4.1-vertical reinforcement, 4.2-transverse reinforcement, 4.3-diagonal reinforcement, 5-column steel pipe, 6-column steel cage, 6.1-column vertical reinforcement, 6.2-column transverse reinforcement, 7-block spacers, 8-positioning pieces, 9-pre-restraint blocks, 10-transverse stiffeners, 11-vertical partitions, A-pre-restraint block steel pipe column, B-beam. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, technical solution and function of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings. Here, the illustrative embodiments of the utility model and their descriptions are used to explain the utility model, but are not intended to limit the utility model.

[0027] In the description of the present utility model, it is to be understood that the terms "include / comprise", "consist of..." or any other variants thereof are intended to cover non-exclusive inclusion, so that a product, device, process or method including a series of elements includes not only those elements, but also other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of further restrictions, the elements defined by the sentences "include / comprise..." and "consist of..." do not exclude the presence of other identical elements in the product, device, process or method including the elements.

[0028] In the present utility model, unless otherwise clearly specified and limited, the term "fixed connection" should be understood in a broad sense, for example: it can be a sleeve connection, a lap joint, a welding connection, a bolt connection, or a combination of the above connections; the terms "installation", "connection", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components; the term "through-length steel bar" means that the steel bar is continuous without disconnection, or the steel bar is disconnected but the disconnected steel bars are fixedly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] It should also be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and should not be understood as a limitation on the present invention.

[0030] The following is a detailed description of the implementation of the present invention using preferred implementation methods in conjunction with the accompanying drawings.

[0031] like Figure 1 , Figure 2 As shown, a pre-constrained block steel pipe column includes a pre-constrained block 9, concrete 3, a column steel pipe 5 and a transverse stiffener 10; the pre-constrained block 9 includes a block 1 and a constraint cage 2; the block 1 is in the constraint 2; the constraint cage 2 includes a cage frame 2.1 and a constraint cage hole 2.2; the pre-constrained block 9 is surrounded by the column steel pipe 5; the concrete 3 wraps the pre-constrained block 9 and fills the gap between the pre-constrained block 9 and the column steel pipe 5; the transverse stiffener 10 is a steel component, fixedly connected to the column steel pipe 5; the transverse stiffener 10 is arranged corresponding to the horizontal component to be installed.

[0032] The transverse stiffener 10 is located inside the column steel tube 5; there is no pre-constrained block material 9 in the area corresponding to the transverse stiffener 10, which can better achieve the "strong node, weak component" performance.

[0033] Since the utility model uses a block material 1 with a larger particle size in the pre-constrained block steel pipe column, compared with the ordinary steel pipe concrete column, the amount of cement and small-particle sand and gravel in the column can be effectively reduced, which is energy-saving and environmentally friendly. When the sand and gravel in the column uses artificial graded sand and gravel, the pre-constrained block steel pipe column can further reduce the high energy consumption and high dust caused by artificial graded sand and gravel.

[0034] Due to the presence of block material 1, the shrinkage creep of pre-constrained block material steel pipe column is smaller than that of ordinary steel pipe concrete column, thus avoiding the defect that ordinary concrete is prone to cracks during large-volume construction. Block material 1 can greatly reduce the amount of cement used and reduce the hydration heat during construction. For large-volume concrete, hydration heat will cause concrete cracking, resulting in a decrease in mechanical properties such as concrete compression resistance, and reducing the service life of column components. For pre-constrained block material steel pipe column, hydration heat can be reduced, and block material 1 can effectively absorb the hydration heat generated by the surrounding concrete 3, reduce the temperature difference with the surrounding area, and effectively avoid hydration heat generated by the temperature difference.

[0035] The pre-constrained block steel pipe column constrains the block material 1 in the cage and the concrete 3 in the constraint cage through the constraint cage 2 in the column, thereby improving the strength and ductility of the combination of the block material 1 and the concrete 3 in the constraint cage, and forming a block concrete with a constraint effect; the constraint cage 2 simultaneously connects the concrete 3 in the constraint cage and the concrete 3 outside the constraint cage, and there is concrete 3 at the constraint cage hole 2.2, so that the concrete 3 in the constraint cage 2 and the concrete 3 outside the constraint cage 2 are connected as a whole; the constraint cage 2 increases the reinforcement content of the pre-constrained block steel pipe column, and as a block concrete with a constraint effect, it bears the corresponding force, thereby achieving the common force of the concrete 3, the constraint cage 2 and the column steel pipe 5 of the pre-constrained block steel pipe column, and realizing the overall mechanical properties of the pre-constrained block steel pipe column.

[0036] The transverse stiffener 10 can bear the force transmitted from the horizontal member and transmit force to the concrete in the steel pipe. Moreover, during construction, the block material 1 is placed in the restraint cage 2 to form a pre-restrained block material 9, which can lift and transport multiple blocks at a time to improve construction efficiency; the restraint cage 2 can control the contact mode, contact area and shape of the block material 1 during construction, so that the concrete 3 can effectively fill the gaps between the blocks 1, effectively reduce quality defects, improve construction quality, and achieve structural safety.

[0037] In the utility model, the block material 1 can be a stone, a reinforced concrete block, a concrete block or a cement mortar block; the concrete 3 can be a self-compacting concrete, a high-fluidity concrete, a fiber concrete, an organic concrete and an ultra-high performance concrete HEPA.

[0038] The block material 1 and the concrete 3 do not undergo a chemical reaction that reduces the strength or durability; the surface of the block material 1 is a rough surface; and the rough surface of the block material 1 is tightly combined with the concrete 3.

[0039] The difference between the bulk material particle size and the average bulk material particle size is no more than 30% of the average particle size. The small difference in bulk material particle size makes it easier to control the contact mode between the bulk materials or reduce their contact area.

[0040] In the utility model, Figure 1 , Figure 2 and Figure 3As shown, the restraint cage 2 is a restraint rib cage or a mesh cage; the restraint cage 2 is closed at the bottom or both ends; the size of the restraint cage hole 2.2 is smaller than the size of the block 1 at that location; the cage frame 2.1 includes a side wall frame 2.1.1 and an end closure 2.1.2; the end closure 2.1.2 is a side wall frame

[0041] 2.1.1 is extended to form or is a dedicated end closure 2.1.2; the dedicated end closure 2.1.2 is connected to the side wall frame 2.1.1 as a whole; there is concrete 3 at the constraint cage hole 2.2, so that the concrete 3 in the constraint cage 2 and the concrete 3 outside the constraint cage 2 are connected as a whole; the cage frame 2.1 can fix the position of the block 1, and the end closure 2.1.2 can close the cage frame 2.1 to prevent the block 1 from falling off from the end; the end closure 2.1.2 is formed by extending the side wall frame 2.1.1, and the two are integrated, which is beneficial to improving the strength and ductility of the pre-constrained block 9; the dedicated end closure 2.1.2 and the side wall frame 2.1.1 are combined for easy production.

[0042] In the utility model, Figure 1 , Figure 2 and Figure 3 As shown, the cage frame 2.1 of the restraining rib cage is composed of restraining ribs 4; the restraining ribs 4 are steel bars or steel wires or FRP bars; the cage frame 2.1 of the grid cage is composed of metal mesh or steel plates with holes.

[0043] In the utility model, Figure 3 As shown, the restraining reinforcement 4 of the restraining reinforcement cage includes vertical reinforcement 4.1, transverse reinforcement 4.2 and / or oblique reinforcement 4.3; the end closure 2.1.2 of the restraining reinforcement cage is formed by fixing or bending the vertical reinforcement 4.1 or the oblique reinforcement 4.3 at the end or is an independent end closure 2.1.2; the independent end closure 2.1.2 is fixedly connected to the vertical reinforcement 4.1 or the oblique reinforcement 4.3, and the fixed connection method is bolting, welding or binding connection.

[0044] The shape of the restraining cage 2 can be cylindrical, spherical, ellipsoidal, etc.

[0045] In the utility model, the block material 1 is a stone; the strength of the stone used in the block material 1 is not less than 60Mpa, which is beneficial to improving the bearing capacity of the steel pipe column and realizing a strong column and a weak beam.

[0046] Concrete 3 is high-flow concrete, which includes self-compacting concrete and high-flow concrete. High-flow concrete is more conducive to filling the gaps between blocks and ensuring the overall compactness of the pre-constrained block steel pipe column.

[0047] The cage 2.1 is made of steel, and the strength of the steel is not less than 300Mpa; the volume ratio of the cage 2.1 to the restraining cage 2 is 0.05% to 4%. This can improve the strength and ductility of the pre-restrained block steel pipe column.

[0048] The column steel pipe 5 is a cold-bent steel pipe or a steel pipe formed by welding steel plates.

[0049] The column steel pipe 5 has a bolt, and the bolt is fixedly connected to the column steel pipe 5.

[0050] In the utility model, the transverse stiffener 10 is a transverse diaphragm, which can bear the force transmitted from the horizontal member and transmit force to the concrete in the steel pipe; the transverse diaphragm is provided with a hole for pouring concrete and hoisting the pre-constrained block material 9.

[0051] The horizontal member to be installed is a steel beam and / or a steel-framed concrete beam; the diaphragm is arranged corresponding to the flange of the steel beam and / or the steel-framed concrete beam, shortening the force transmission path and improving the mechanical properties.

[0052] There are two or more transverse partitions, which are arranged up and down; vertical partitions 11 are arranged between the transverse partitions, and the vertical partitions 11 are fixedly connected to the column steel pipes 5.

[0053] In the utility model, the transverse stiffener 10 is a transverse steel beam; the transverse steel beam is located inside the column steel pipe 5, and both ends are fixedly connected to the column steel pipe 5. The transverse steel beam can be a steel plate, an I-beam, or a welded I-beam; it can have flanges or partially have flanges; it is beneficial to transmit the force transmitted from the horizontal component.

[0054] In the utility model, Figure 4 As shown, there are multiple pre-constrained blocks 9 in the pre-constrained block steel pipe column; positioning pieces 8 are arranged between the pre-constrained blocks 9; concrete 3 fills the gaps between the pre-constrained blocks 9; and block spacers 7 are arranged between the pre-constrained blocks 9.

[0055] A plurality of pre-constrained blocks 9 can reduce the amount of concrete 3 used, and the positioning member 8 can effectively fix the pre-constrained blocks 9 to prevent or reduce adverse effects such as displacement or tilting caused by pouring of the concrete 3 during construction.

[0056] In the utility model, Figure 5 As shown, there is a column steel cage 6 in the column steel pipe 5; the concrete 3 wraps the pre-constrained block 9 and the column steel cage 6, and fills the gaps between the pre-constrained block 9, the column steel cage 6 and the column steel pipe 5.

[0057] In the utility model, Figure 6 As shown, the pre-constrained block steel pipe column A is fixedly connected to the horizontal member B to be installed to form a structure.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A pre-constrained block steel pipe column, characterized in that: The invention comprises a pre-constrained block material (9), concrete (3), a column steel pipe (5) and a transverse stiffener (10); the pre-constrained block material (9) comprises a block material (1) and a constraint cage (2); the block material (1) is inside the constraint cage (2); the constraint cage (2) comprises a cage frame (2.1) and a constraint cage hole (2.2); the pre-constrained block material (9) is surrounded by the column steel pipe (5); the concrete (3) wraps the pre-constrained block material (9) and fills the gap between the pre-constrained block material (9) and the column steel pipe (5); the transverse stiffener (10) is a steel member fixedly connected to the column steel pipe (5); the transverse stiffener (10) is arranged corresponding to the horizontal member to be installed.

2. The pre-constrained block steel pipe column according to claim 1, characterized in that: The transverse stiffener (10) is located inside the column steel tube (5); and there is no pre-constrained block material (9) in the area corresponding to the transverse stiffener (10).

3. The pre-constrained block steel pipe column according to claim 1, characterized in that: The restraining cage (2) is a restraining rib cage or a grid cage; the restraining cage (2) is closed at the bottom or both ends; the size of the restraining cage hole (2.2) is smaller than the size of the block material (1) at that location; the cage frame (2.1) comprises a side wall frame (2.1.1) and an end closing piece (2.1.2); the end closing piece (2.1.2) is formed by extending the side wall frame (2.1.1) or is a dedicated end closing piece (2.1.2); the dedicated end closing piece (2.1.2) is connected to the side wall frame (2.1.1) as a whole; concrete (3) is provided at the restraining cage hole (2.2), so that the concrete (3) inside the restraining cage (2) and the concrete (3) outside the restraining cage (2) are connected as a whole.

4. The pre-constrained block steel pipe column according to claim 1, characterized in that: The transverse stiffener (10) is a transverse partition; the transverse partition is provided with a hole.

5. The pre-constrained block steel pipe column according to claim 4, characterized in that: The horizontal member to be installed is a steel beam and / or a steel-framed concrete beam; the transverse diaphragm is arranged corresponding to the flange of the steel beam and / or the steel-framed concrete beam.

6. The pre-constrained block steel pipe column according to claim 4, characterized in that: The transverse partitions are two or more and are arranged up and down; a vertical partition (11) is arranged between the transverse partitions, and the vertical partition (11) is fixedly connected to the column steel pipe (5).

7. The pre-constrained block steel pipe column according to claim 1, characterized in that: The transverse stiffener (10) is a transverse steel beam; the transverse steel beam is located inside the column steel pipe (5), and its two ends are fixedly connected to the column steel pipe (5).

8. The pre-constrained block steel pipe column according to claim 1, characterized in that: The column steel pipe (5) contains a column steel cage (6); the concrete (3) wraps the pre-constrained block material (9) and the column steel cage (6), and fills the gaps between the pre-constrained block material (9), the column steel cage (6) and the column steel pipe (5).

9. A pre-constrained block steel pipe column structure, characterized in that: The pre-constrained block steel pipe column (A) according to claim 1 is fixedly connected to the horizontal member (B) to be installed to form a structure.

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