Square steel tube concrete combination column internally filled with stones

Abstract

The utility model provides a square steel tube concrete combination column internally filled with stones. The square steel tube concrete combination column comprises a square steel tube, a concrete layer and a column core group, the column core group is coaxially arranged in the square steel tube, and the concrete layer is filled in the spare part in the square steel tube; the column core group comprises angle steel, a stone column, a batten plate group and a limiting assembly, the positioning mechanism is used for positioning the array position of the four angle steel, the integrity and the position of the column core column are ensured, the combined column can remarkably improve the axial pressure bearing capacity and the integrity, and the combined column has the advantages of being high in compressive strength, low in manufacturing cost and the like; according to the construction method, local materials are used according to the building characteristics of the Fujian area, waste stone in demolished stone structure buildings is fully utilized in the concrete-filled steel tube combination column structure, the problems of insufficient axial compression strength and bearing capacity of the concrete-filled steel tube combination column structure can be solved, the concrete consumption of a newly-built structure can be greatly reduced, and the construction cost is reduced. The method for reducing the cost and reducing the environmental pollution is a technology which is suitable for the green and sustainable development demand of the society.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a square steel tube concrete composite column with internal filling stones. Background Art

[0002] At present, steel tube concrete composite columns are a common component form in steel concrete composite structures. They are widely used in the fields of building structures and bridges due to their good compressive and deformation properties. The axial compressive strength of steel tube concrete composite columns is mainly provided by the confining concrete and the external steel tube. For ordinary steel tube concrete composite columns, the compressive resistance and bearing capacity provided by the concrete are usually not enough to bear the requirements of high-strength structures, affecting the overall building.

[0003] In addition, in many areas of my country, especially in the southeastern coastal areas such as Fujian, there are abundant granite reserves and a developed stone processing industry. There are many standard stone strips produced by the renewal of existing stone structures. Making full use of the discarded stones from the demolished stone structures in the steel tube concrete composite column structure can not only solve the problem of insufficient axial compression strength and bearing capacity, but also greatly reduce the amount of concrete used in the new structure, reduce costs, and reduce pollution to the environment. It is a technology that meets the needs of green and sustainable development in society. Utility Model Content

[0004] The utility model provides a square steel tube concrete composite column with inner filling stone, aiming to improve the deficiencies in the prior art. According to the architectural characteristics of Fujian area, local materials are used to solve the problems of insufficient strength and bearing capacity, high cost and the like of the steel tube concrete composite column in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides a square steel tube concrete composite column with internal filling stone, comprising a square steel tube, a concrete layer and a column core group; the column core group is coaxially arranged in the square steel tube, and the concrete layer is filled in the empty space in the square steel tube; the column core group comprises four angle steels, four stone columns, four groups of tie plate groups and at least two groups of limit assemblies, the four angle steels are arranged in an equilateral rectangular array, and one end of the right-angle notch of the angle steel is arranged inward; the four groups of tie plate groups are respectively connected and arranged between the outer ends of adjacent angle steels; the four stone columns are respectively arranged at the inner ends of the four angle steels; the side end faces of the angle steels are flush with the side faces of the stone columns; the limit assembly is in a tic-tac-toe structure, the limit assembly is arranged between the four stone columns, and respectively abuts against the two inner side faces of the stone columns; it also includes a positioning mechanism, the positioning mechanism is arranged below the column core group, and the positioning mechanism is used to position the array positions of the four angle steels.

[0006] As a further optimization, the positioning mechanism includes a base, four sliding rods are evenly spaced on the circumference of the base, a positioning seat is slidably arranged on the sliding rod, a positioning part is arranged on the positioning seat, and the inner end of the positioning part is suitable for being fitted with the outer end of the angle steel; a telescopic rod is connected between adjacent positioning seats.

[0007] As a further optimization, fastening bolts are provided on the positioning seat.

[0008] As a further optimization, the stone columns are made of discarded stones from demolished stone structure buildings.

[0009] As a further optimization, the angle steel is an equilateral angle steel.

[0010] As a further optimization, the angle steel and the stone column are bonded and connected by stone dry hanging glue.

[0011] As a further optimization, the stone column is a column made of granite with a compressive strength ranging from 105-110MPa and a tensile strength ranging from 6-10MPa, and has flat upper and lower surfaces.

[0012] As a further optimization, the limiting assembly is welded from four steel bars of equal length, and the limiting assembly is suitable for being placed inside the square steel tube.

[0013] As a further optimization, the diameter of the steel bars of the limiting assembly is 6-8 mm.

[0014] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0015] 1. The present application provides a square steel tube concrete composite column with internal filling stone. According to the architectural characteristics of Fujian Province, local materials are used. The abundant granite reserves and developed stone construction market in Fujian Province are the industrial guarantee of this technology. Stone has the advantages of high compressive strength, low cost, and convenient material acquisition. Fujian Province and other granite resources are of high quality. Stone structure is the main structural type in southern Fujian. There are a large number of stone demolished structure houses in southern Fujian, which have produced a large number of old stones as construction waste. A large number of waste stones generated during the demolition process can be reused without complicated secondary processing. In addition, the internal filling stone in the square steel tube concrete can reduce the amount of concrete, reduce the amount of cement, and reduce the emission of carbon dioxide, that is, reduce the production cost and avoid pollution and waste, which is conducive to the sustainable development of social economy.

[0016] 2. Use large blocks of stone with regular shapes to replace most of the concrete inside the steel pipe. Since the strength-to-mass ratio of stone is much higher than that of concrete and ordinary steel, the compressive strength of the column can be greatly improved without changing the cross-sectional size. In addition, the brittle failure characteristics of stone can be improved through the restraint of angle steel and external square steel pipes. This composite column can significantly improve the axial compressive bearing capacity and integrity.

[0017] 3. The composite column has a high material utilization rate, is easy to obtain materials, and has a simple process and is easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a square steel tube concrete composite column with internal filling stone before concrete is poured into it;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the column core group of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of a square steel tube concrete composite column with internal filling stone of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the positioning mechanism of the utility model from a top view;

[0023] Figure 5 It is a structural schematic diagram of the positioning mechanism of the utility model when it is adapted to the angle steel.

[0024] Markings in the figure: 1. square steel pipe; 2. concrete layer; 3. column core group; 4. angle steel; 5. stone column; 6. plate group; 7. limit assembly; 8. positioning mechanism; 9. base; 10. sliding rod; 11. positioning seat; 12. positioning part; 13. telescopic rod; 14. fastening bolts. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the implementation mode of the utility model clearer, the technical scheme in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all of the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the implementation mode of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the utility model. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] Depend on Figures 1 to 5 As shown, an embodiment of the utility model provides a square steel tube concrete composite column with internal filling stone, including a square steel tube 1, a concrete layer 2 and a column core group 3; the column core group 3 is coaxially arranged in the square steel tube 1, and the concrete layer 2 is filled in the empty space in the square steel tube 1, and finally a complete square steel tube 1 concrete composite column is formed.

[0027] Preferably, the column core group 3 includes four angle steels 4, four stone columns 5, four groups of plate groups 6 and at least two groups of limit assemblies 7, the four angle steels 4 are arranged in an equilateral rectangular array, and one end of the right-angle notch of the angle steel 4 is arranged inward, wherein the angle steel 4 in this embodiment is an equilateral angle steel 4 with equal sides; the four groups of plate groups 6 are respectively connected and arranged between the outer ends of adjacent angle steels 4 by welding, so that the four angle steels 4 become a whole and can bear force together, and the respective plates of the four groups of plate groups 6 are arranged one by one to ensure that there are four plates on the same level; the four stone columns 5 are respectively arranged at the inner ends of the four angle steels 4, and the stone columns 5 are made of granite. The column has a compressive strength range of 105-110MPa and a tensile strength range of 6-10MPa, and has a flush upper and lower surface; the side end face of the angle steel 4 is flush with the side of the stone column 5, so that the stone column 5 with a small square cross section cooperates with the angle steel 4 to form a combination of a larger square cross section, so that the two can provide good lateral support to each other; the limit assembly 7 is a well-shaped structure, and the limit assembly 7 is arranged between the four stone columns 5, and respectively against the two inner sides of the stone columns 5, so that the limit assembly 7 can provide inner support for the combination of the stone column 5 and the angle steel 4, and can play a certain positioning and stabilizing role. Among them, the stone column 5 in this embodiment is simply processed by dismantling the discarded stones in the stone structure building, which can effectively reduce costs and avoid waste. Furthermore, as an embodiment, the stone column 5 can be formed by combining segmented stones of the same cross-sectional size. When processing the segmented stones, it is necessary to ensure that the upper and lower end faces are flush so that they can be projected and overlapped in the vertical direction. Furthermore, for segmented stones whose upper and lower surfaces are not flush enough, a thin layer of concrete can be used to level and fix them to each other.

[0028] Preferably, it also includes a positioning mechanism 8, which is arranged below the column core group 3 and is used to position the array positions of the four angle steels 4, so as to ensure that the column core group 3 after assembly can become a structure with a square cross section.

[0029] Among them, the positioning mechanism 8 includes a base 9, the lower part of the base 9 is in the shape of a cube, and the upper axis position is protruding in the shape of a cylinder. Four equal-length slide bars 10 are evenly spaced on the upper circumference of the base 9, and positioning seats 11 of the same specifications are slidably arranged on the slide bars 10. The positioning seat 11 is provided with a positioning part 12, and the inner end of the positioning part 12 is suitable for being arranged in a fit with the outer end of the angle steel 4; a telescopic rod 13 is connected between adjacent positioning seats 11. When positioning, the position of a positioning seat 11 can be adjusted, and the connection limit of the telescopic rod 13 can be used to make the four positioning seats 11 maintain the same distance from the axis, thereby stably adjusting the size and position of the rectangular array of the angle steel 4, ensuring the same spacing, and the outer side is flush. After the position of the positioning seat 11 is confirmed, it can be fixed by the fastening bolts 14 on the positioning seat 11, so that the position of the positioning seat 11 relative to the base 9 remains fixed. Among them, according to different specifications, the positioning seat 11 can be used as the bottom support of the angle steel 4 and the stone column 5, or after the angle steel 4 is positioned, the base 9 can be padded with concrete to support a larger stone column 5.

[0030] Preferably, as an implementation mode, the angle steel 4 and the stone column 5 are connected by bonding with stone dry hanging glue.

[0031] Preferably, the limit assembly 7 is welded from four steel bars of equal length, the diameter of the steel bars is 6-8 mm, and the length is similar to the inner diameter of the square steel tube 1, so that the limit assembly 7 is suitable for being placed inside the square steel tube 1, and a gap is left between the end of the steel bar and the inner wall of the square steel tube 1 during installation, and they can be connected by welding, thereby ensuring that the two can be installed and the square steel tube 1 and the internal column core group 3 can be coaxially arranged to a great extent.

[0032] The utility model also provides a construction method for a square steel tube concrete composite column with internal filling stone, comprising the following steps:

[0033] Step S1: After fixing the base 9 of the positioning mechanism 8 at the designated position, adjust the position of the positioning seat 11 and fix it with the fastening bolts 14; during the fixing, the horizontal state of the base 9 of the positioning mechanism 8 must be ensured.

[0034] Step S2: fix four angle steels 4 on four fixing seats respectively, and bond stone columns 5 whose side faces match the inner dimensions of the angle steels 4 to the inner sides of the angle steels 4 by stone dry hanging glue; wherein, as an implementation mode, the stone columns 5 can be formed by a combination of segmented stones, and concrete can be poured in advance at the bottom position for preliminary fixation.

[0035] Step S3: A set of limit assemblies 7 is fixedly arranged in the middle of the four stone columns 5 near the top and bottom of the angle steel 4; the steel bars of the limit assemblies 7 can be welded to the side ends of the angle steel 4, and the limit assemblies 7 at the bottom attachment can be used for preliminary fixation and support, and can also ensure that the overall component is in the middle position relative to the square steel tube 1.

[0036] Step S4: Use four groups of tie plate groups 6 to connect and fix adjacent angle steels 4 respectively to form a column core group 3; in this way, the angle steels 4 and the stone columns 5 form a whole to bear the load together, the stone columns 5 can increase the compressive strength, and the angle steels 4 can prevent the stone columns 5 from brittle failure more quickly, thereby increasing the compressive bearing capacity of the combined column and improving the ductility of the component.

[0037] Step S5: Hang the square steel tube 1 on the outside of the column core group 3, and after fixing it, pour concrete into the square steel tube 1. At the same time, use an inserted vibrator to extend into the inside of the square steel tube 1 for vibration to ensure the density of the concrete in the empty space in the stone column 5 and the empty space between the stone column 5 and the square steel tube 1. Stop pouring when the concrete overflows the upper end surface of the square steel tube 1. After smoothing and curing, a complete square steel tube 1 concrete composite column is formed.

[0038] This implementation method has the advantages of high compressive strength, low cost, and convenient material acquisition. In addition, Fujian Province and other places have high-quality granite resources, and stone structure is the main structure type in southern Fujian. With the acceleration of rural urbanization, a large number of stone-structured houses in southern Fujian have been demolished and renovated, resulting in a large number of old stones becoming construction waste. The resource recycling of discarded stones can achieve economic benefits. By filling the square steel tube 1 with stone columns 5, the amount of concrete can be reduced, the amount of cement can be reduced, and the emission of carbon dioxide can be reduced, which is more environmentally friendly. In addition, the strength and density ratio of stone is higher than that of concrete. The square steel tube 1 constrains the internal filling stone and improves the overall brittle failure of the stone. The composite column can significantly improve the axial compression bearing capacity and integrity.

[0039] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A square steel tube concrete composite column filled with stone, characterized in that: It comprises a square steel tube, a concrete layer and a column core group; the column core group is coaxially arranged in the square steel tube, and the concrete layer is filled in the empty space in the square steel tube; The column core group includes four angle steels, four stone columns, four groups of gussets and at least two groups of limiter assemblies. The four angle steels are arranged in an equilateral rectangular array, and one end of the right-angle notch of the angle steel is arranged inward; the four groups of gussets are respectively connected and arranged between the outer ends of adjacent angle steels; the four stone columns are respectively arranged at the inner ends of the four angle steels; the side end faces of the angle steels are flush with the side faces of the stone columns; the limiter assemblies are in a well-shaped structure, and the limiter assemblies are arranged between the four stone columns and respectively abut against the two inner side faces of the stone columns; It also includes a positioning mechanism, which is arranged below the column core group and is used to position the array positions of the four angle steels.

2. The square steel tube concrete composite column filled with stone according to claim 1 is characterized in that The positioning mechanism includes a base, and four sliding rods are evenly spaced on the circumference of the base. A positioning seat is slidably arranged on the sliding rod, and a positioning part is arranged on the positioning seat. The inner end of the positioning part is suitable for being fitted with the outer end of the angle steel; a telescopic rod is connected between adjacent positioning seats.

3. A square steel tube concrete composite column filled with stone according to claim 2, characterized in that , a fastening bolt is arranged on the positioning seat.

4. The square steel tube concrete composite column filled with stone according to claim 1 is characterized in that The stone columns are made of discarded stones from demolished stone structure buildings.

5. The square steel tube concrete composite column filled with stone according to claim 1 is characterized in that , the angle steel is an equilateral angle steel.

6. The square steel tube concrete composite column filled with stone according to claim 1 is characterized in that The angle steel and the stone column are bonded and connected by stone dry hanging glue.

7. The square steel tube concrete composite column filled with stone according to claim 1 is characterized in that The stone column is a granite column with a compressive strength range of 105-110MPa and a tensile strength range of 6-10MPa, and has flat upper and lower surfaces.

8. The square steel tube concrete composite column filled with stone according to claim 1 is characterized in that The limiting component is welded by four steel bars of equal length, and the limiting component is suitable for being placed inside the square steel tube.

9. A square steel tube concrete composite column filled with stone according to claim 8, characterized in that , the diameter of the steel bar of the limiting component is 6-8mm.

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