CN113463842A - Combined rectangular section column and manufacturing method thereof - Google Patents
Combined rectangular section column and manufacturing method thereof Download PDFInfo
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- CN113463842A CN113463842A CN202010245915.4A CN202010245915A CN113463842A CN 113463842 A CN113463842 A CN 113463842A CN 202010245915 A CN202010245915 A CN 202010245915A CN 113463842 A CN113463842 A CN 113463842A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
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Abstract
The invention discloses a combined rectangular section column and a using method thereof, wherein the combined rectangular section column comprises a concrete-filled steel tube core column with a U-shaped wing, four long wood units with L-shaped sections and a plurality of bamboo veneers, the concrete-filled steel tube core column with the U-shaped wing comprises a concrete-filled steel tube core column and four T-shaped steel plates with the U-shaped wings, a web of the T-shaped steel plates with the U-shaped wings is fixed on the side surface of the concrete-filled steel tube core column, folded edges of wing plates are respectively positioned on two sides of the web, and empty areas between every two adjacent T-shaped steel plates with the U-shaped wings form an occlusion mounting area; the four long wood units with the L-shaped cross sections are formed by splicing and processing a plurality of small short wood by adopting first bamboo pins and latex; the four long wood units with the L-shaped cross sections are respectively embedded in the four occlusion mounting areas, and the plurality of bamboo plywood plates are respectively fixed on the side surfaces of the combined column by adopting second bamboo pins and second structural adhesive. The combined rectangular beam can effectively recycle small-section wood and bamboo resources, and has the advantages of simple and reliable structure, wide application range and high environmental protection.
Description
Technical Field
The invention relates to the technical field of building composite structures, in particular to a combined rectangular section column and a manufacturing method thereof.
Background
In villages and small towns building structures, timber framed structures have comparatively extensive application, and the timber pillar is timber framed structure's vertical component. In the wooden frame structure, the wooden columns and the wooden beams form the wooden frame through connecting nodes, and loads borne by the wooden beams are transmitted to the wooden columns through the nodes and then transmitted to the foundation through the wooden columns.
Conventional timber columns are usually made of whole logs with circular and rectangular cross sections, and the resources of whole logs with large cross sections are very scarce due to excessive forest harvesting. On the other hand, there are many stocks of waste small-section logs sawed manually in forests and residual small-section woods in wood processing plants, and because the small-section logs and the residual small-section woods are not only small in section and short in length, but also lack of corresponding recycling technology, the small-section logs and the residual small-section woods can only be treated as waste products, so that resources are wasted, and the environment is polluted. How to recycle waste small-section logs sawed off manually in forests and residual small-section woods in a wood processing plant is a key technical problem which is very concerned about and urgently needed to be solved in the engineering field.
After the small-section wood is processed into the rectangular-section wood, the long small-section rectangular wood is difficult to process, the actually processed small-section rectangular wood is different in length, how to reasonably and efficiently utilize the short wood with the different lengths is also very concerned in the engineering field.
Bamboo has strong growth ability and belongs to an ecological building material. Bamboo resources in China are abundant, bamboo types and bamboo forest areas account for 1/4 of the world, bamboo yield accounts for 1/3 of the world, and the bamboo wood occupies the top of all countries in the world. The bamboo has excellent physical and mechanical properties, the tensile strength of the bamboo is about 2 times of that of wood, and the bamboo has good elasticity and flexibility. However, the mechanical properties of the bamboo are closely related and greatly different with the water content, the bamboo stalk position, the bamboo age, the standing conditions, the bamboo species and the like, so that the wide application of the bamboo in the building is limited. The bamboo wood-based panel produced by using bamboo as a main raw material greatly changes the form and structure of the bamboo due to the structural reasonability, and improves the stability of the physical and mechanical properties of the bamboo. The bamboo plywood processed by bamboo is already applied to a large scale as a building template, the corrosion resistance, the water resistance, the fire resistance, the compression resistance, the tensile resistance, the bending resistance and the like of the bamboo plywood are all obviously better than those of a wood template, the turnover frequency is obviously more than that of the wood template, and the working stability and the safety are good.
At present, the surplus of steel productivity in China is a problem to be solved urgently in the industry how to reasonably adopt light steel in a large-scale village and town building structure.
The concrete filled steel tubular column has good compression resistance, and the concrete in the steel tube is restrained by the steel tube and is in a three-dimensional compression stress state. The compression resistance of the hollow steel pipe column is obviously higher than that of a hollow steel pipe column, and how to combine a light steel pipe concrete column, resources, abundant small short wood and bamboo plywood into a column member with good compression resistance is urgent need of engineering.
At present, latex is mainly used for bonding wood and wood or bonding wood and a bamboo plywood, the color of the latex is white, the latex is also called white latex, the latex is short for polyvinyl acetate adhesive and comprises single-component latex and double-component latex, and the modified latex has the advantages of firm bonding, good water resistance and good weather resistance. At present, structural adhesive is mainly used for bonding wood and steel or bonding bamboo plywood and steel, has high strength, peeling resistance and impact resistance, can bear larger load, is aging-resistant, fatigue-resistant and corrosion-resistant, has simple and convenient construction process, has stable performance within the expected service life of the structure, is suitable for bonding structural members, and can be used for bonding the same materials such as metal, wood and the like or bonding different materials. The price of the structural adhesive is higher than that of the latex.
Therefore, the research and development of the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined rectangular column which is economical, practical, low in manufacturing cost and simple and convenient to construct and is suitable for low-rise buildings, particularly low-rise rural houses in villages and towns, and the construction method have very important practical significance and social, economic and environmental values.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a combined rectangular section column, which can effectively recycle small section timber and bamboo resources, and has the advantages of simple and reliable structure, wide application range and high environmental protection.
According to an embodiment of the first aspect of the present invention, the combined rectangular section column is a combined rectangular column with U-shaped wing steel pipe concrete-small short wood-bamboo plywood, comprising:
the concrete-filled steel tube core column with the U-shaped wings comprises a concrete-filled steel tube core column and four U-shaped wing T-shaped steel plates, webs of the four U-shaped wing T-shaped steel plates are vertically arranged and are respectively welded and fixed on four side faces of the concrete-filled steel tube core column, the cross section of the whole formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, folded edges of wing plates of the four U-shaped wing T-shaped steel plates are respectively located on two sides of the webs, and dead zones between every two adjacent U-shaped wing T-shaped steel plates form occlusion mounting zones;
the wood-making machine comprises four long wood units with L-shaped cross sections, wherein the two outer side end faces of the four long wood units with the L-shaped cross sections are respectively provided with a rabbet, the four long wood units with the L-shaped cross sections are formed by splicing a plurality of small short wood into long wood with a rectangular cross section by adopting a first bamboo pin and latex, and then processing the long wood with the rectangular cross section according to design requirements, wherein the latex is bonded on the interface between every two adjacent small short wood; one part of each of the four long wood units with the L-shaped cross section is embedded in the four occlusion installation areas in a one-to-one corresponding and adaptive manner, the folded edges of the four wing plates are embedded in the tongue-and-groove of the corresponding long wood unit with the L-shaped cross section, and interfaces between the four long wood units with the L-shaped cross section and the concrete core column with the U-shaped wing are bonded and fixed by first structural adhesive, so that a concrete-small short wood combined column with the U-shaped wing and the rectangular cross section is formed;
The plurality of bamboo rubber plates are respectively fixed on four side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by adopting second bamboo pins and second structural adhesive so as to completely coat the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column, wherein the second structural adhesive is bonded on an interface between each bamboo rubber plate and the corresponding U-shaped wing steel pipe concrete-small short wood combined column.
According to the combined rectangular section column of the embodiment of the first aspect of the invention, the manufacturing process is as follows: firstly, manufacturing a concrete-filled steel tube core column with U-shaped wings, designing and manufacturing the concrete-filled steel tube core column and the U-shaped wing T-shaped steel plates according to performance requirements, and vertically arranging webs of the four U-shaped wing T-shaped steel plates and respectively welding and fixing the webs on four side surfaces of the concrete-filled steel tube core column, so that the cross section of the whole body formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, and the concrete-filled steel tube core column with the U-shaped wings defines four occlusion installation areas; then, long wood units with L-shaped sections are manufactured, every two adjacent small short woods are spliced and fixed with long wood materials with rectangular sections through first bamboo pins, and the connecting interface between every two adjacent small short wood is bonded and fixed by latex, then the long wood with rectangular section is processed into long wood units with L-shaped section according to the design requirement, secondly, manufacturing a U-shaped wing steel pipe concrete-small short wood combined column, painting first structural adhesive on the connecting interface of the four L-shaped section long wood units and the U-shaped wing steel pipe concrete core column, pushing the four long wood units with the L-shaped cross sections into the concrete-filled steel tube core column with the U-shaped wings from one end of the four occlusion installation areas, so that parts of the four long wood units with the L-shaped sections are respectively embedded in the four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wings in a one-to-one corresponding and adaptive manner, the small short wood is spliced in a staggered manner to form a U-shaped wing concrete filled steel tube-small short wood combined column with a rectangular section; and finally, connecting the bamboo plywood with the U-shaped wing steel pipe concrete-small short wood combined column, respectively sticking a plurality of bamboo plywood on the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat the whole outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column, punching holes for the second bamboo pins to be pinned into the bamboo plywood and the L-shaped section long wood units according to design arrangement after the bonding strength meets the requirement, coating second latex on the surface of the second bamboo pins, and then pinning the holes to form four double connection interfaces of mechanical connection of matching interfaces and complementary interface bonding between the L-shaped section long wood units and the bamboo plywood.
The combined rectangular cross-section column according to an embodiment of the first aspect of the invention has the following advantages: the method comprises the following steps that firstly, a concrete-filled steel tube core column with U-shaped wings can be automatically adjusted and designed based on the stress requirement of a combined column, and the concrete-filled steel tube core column with the U-shaped wings and good compression resistance is adopted at the core pressed part; the U-shaped wing T-shaped steel plates are adopted around the concrete filled steel tube core column with larger bending stress, the effects of resisting compression and strengthening the connection between long wood units are achieved, the design is flexible, the stress is reasonable, and steel is saved; the long wood units with the L-shaped cross sections are formed by splicing the small short wood in a staggered manner based on the stress requirement of the combined column, the small short wood are connected by adopting cylindrical bamboo pins and glue, the long wood units of the high-performance connecting interface with the mechanical engagement and full-interface gluing synergistic stress between the formed small-section short wood are close to the whole wood in performance, the tensile property and the shear resistance of the bamboo pins are obviously better than those of the wood pins, the defects that steel screws are easy to rust are overcome, and the long wood units with the L-shaped cross sections have enough strength and rigidity required by wood connection; thirdly, the bamboo plywood with tensile strength and compressive strength 2 times of that of the wood is adopted to cover the periphery of the combined rectangular column with the largest bending resistance stress, so that the bending rigidity, bending resistance bearing capacity and shearing resistance bearing capacity of the combined column are obviously improved, and the rigidity, strength and stability of the combined column are obviously improved compared with those of the traditional log column with equal cross section of the same wood; fourthly, the small-section short wood, the bamboo plywood and the steel pipe concrete core column with the U-shaped wings are organically combined, the structure is simple, the connection is reliable, the ecological environment is protected, and the recycling of forestry waste small-section logs and residual small-section wood processed in the wood industry and the comprehensive utilization of a large amount of ecological bamboo can be powerfully promoted; fifthly, the whole combined rectangular section column does not have an exposed steel part, namely the steel part is completely wrapped by wood and bamboo, so that the durability of the combined column is remarkably improved, the combined column is very suitable for a countryside building structure with large volume and wide range, and the appearance of the combined column has the ecological sense of a traditional wood-bamboo structural column.
According to an embodiment of the first aspect of the invention, the concrete-filled steel tube core column is machined by pouring fine aggregate concrete into a rectangular steel tube, a square steel tube or a round steel tube.
According to a further embodiment of the first aspect of the present invention, the wall thickness of the steel tube in the concrete filled steel tube core column is not less than 2mm, the fine crushed concrete strength grade is not less than 20MPa, and the particle size of the coarse aggregate in the fine aggregate concrete is not more than 100 mm.
According to an embodiment of the first aspect of the invention, the strake is a cold-formed steel plate.
According to a further embodiment of the first aspect of the present invention, the wing plate has a thickness of not less than 2mm and the web has a thickness of not less than 2 mm.
According to an embodiment of the first aspect of the invention, the compressive bearing capacity of the concrete filled steel tube core column with U-shaped wings is not less than 50% of the overall compressive bearing capacity of the combined rectangular cross-section column.
According to one embodiment of the first aspect of the invention, the small billets are small billets having a cross-sectional size that meets the design cross-sectional requirement but does not meet the combined rectangular cross-sectional column height requirement, or the small billets are small billets having a cross-sectional size that does not meet the design cross-sectional requirement and does not meet the combined rectangular cross-sectional column height requirement.
According to one embodiment of the first aspect of the present invention, the thickness of the bamboo plywood is not less than 10mm, and the butt joint angle between every two adjacent bamboo plywood vertically intersecting is 45 degrees.
In a second embodiment of the present invention, a method for making a composite rectangular cross-section pillar as in any one of the first embodiments above is also provided.
According to the second aspect of the invention, the manufacturing method of the combined rectangular section column comprises the following steps:
manufacturing the concrete-filled steel tube core column with the U-shaped wings: designing and manufacturing the concrete-filled steel tube core column and the U-shaped wing T-shaped steel plates according to performance requirements, and vertically arranging webs of the four U-shaped wing T-shaped steel plates and respectively welding and fixing the webs on four side surfaces of the concrete-filled steel tube core column, so that the cross section of the whole formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, and the concrete-filled steel tube core column with the U-shaped wings defines four occlusion installation areas;
manufacturing the long wood unit with the L-shaped section: splicing a plurality of small short wood pieces into long wood pieces with rectangular cross sections by adopting the first bamboo pins and the latex, wherein the latex is connected to the interface between every two adjacent small short wood pieces, and then processing the long wood pieces with the rectangular cross sections into the long wood units with the L-shaped cross sections according to the design requirement, so that one part of the long wood units with the L-shaped cross sections can be embedded in the occlusion installation area in a matching manner;
Manufacturing the U-shaped wing steel pipe concrete-small short wood combined column: after coating a first structural adhesive on the connection interface of the four long wood units with the L-shaped cross sections and the concrete-filled steel tube core column with the U-shaped wings, embedding a part of the four long wood units with the L-shaped cross sections into the four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wings in a one-to-one corresponding and adaptive manner respectively, so as to form the concrete-filled steel tube-small short wood combined column with the rectangular cross section and with the U-shaped wings;
connecting the bamboo plywood with the U-shaped wing steel pipe concrete-small short wood combined column: firstly, respectively sticking a plurality of bamboo plywood plates on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, after the bonding strength meets the requirement, punching holes for the second bamboo pins to be pinned into the bamboo plywood plates and the L-shaped section long wood units according to the design arrangement, then coating the second latex on the surfaces of the second bamboo pins, and then pinning into the holes, thereby forming the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined rectangular column.
According to an embodiment of the second aspect of the invention, further comprising the steps of:
Surface treatment: and (3) carrying out surface polishing and smoothing treatment on the exposed part of the bamboo plywood on the U-shaped wing-provided steel pipe concrete-small short wood-bamboo plywood combined rectangular column.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of one orientation of a composite rectangular cross-section column according to an embodiment of the first aspect of the present invention.
Fig. 2 is a schematic structural view of another orientation of a composite rectangular cross-section post according to an embodiment of the first aspect of the present invention.
Fig. 3 is a schematic structural diagram of an L-shaped section log unit combined with a rectangular section column according to an embodiment of the first aspect of the present invention.
Fig. 4 is a schematic structural view of a combined rectangular cross-section column concrete-filled steel tube core column with U-wings according to an embodiment of the first aspect of the present invention.
Fig. 5 is a schematic structural diagram of a bamboo plywood combined with rectangular section columns according to an embodiment of the first aspect of the invention.
Reference numerals:
combined rectangular section column 1000
Concrete-filled steel tube core column 1 with U-shaped wings
Snap-in mounting area 13
L-shaped section long wood unit 2 tongue-and-groove 21 rectangular section long wood 22
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A composite rectangular-section column 1000 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
As shown in fig. 1 to 5, a combined rectangular-section column 1000 according to an embodiment of the first aspect of the present invention, the combined rectangular-section column 1000 being a U-wing concrete-filled steel tube-cork-bamboo plywood combined rectangular column, includes a U-wing concrete-filled steel tube core column 1, the long wood units 2 with the L-shaped sections and the bamboo veneers 3 are arranged in parallel, the steel pipe concrete core column 1 with the U-shaped wings comprises a steel pipe concrete core column 11 and four U-shaped wing T-shaped steel plates 12, web plates 122 of the four U-shaped wing T-shaped steel plates 12 are vertically arranged and are respectively welded and fixed on four side faces of the steel pipe concrete core column 11, the cross section of the whole formed by the four web plates 122 and the steel pipe concrete core column 11 is approximately cross-shaped, folded edges 1211 of wing plates 121 of the four U-shaped wing T-shaped steel plates are respectively located on two sides of the web plates 122, and dead areas between every two adjacent U-shaped wing T-shaped steel plates 12 form an occlusion mounting area 13; the two outer side end faces of the four long wood units 2 with the L-shaped cross sections are respectively provided with a rabbet 21, the four long wood units 2 with the L-shaped cross sections are formed by splicing a plurality of small short wood into long wood 22 with a rectangular cross section by adopting a first bamboo pin and latex, and then processing the long wood 22 with the rectangular cross section according to design requirements, wherein the latex is bonded on the interface between every two adjacent small short wood; one part of each of the four long wood units 2 with the L-shaped cross section is embedded in the four occlusion mounting areas 13 in a one-to-one corresponding and adaptive manner, folded edges 1211 of the four wing plates 121 are embedded in grooves and tongues 21 of the corresponding long wood units 2 with the L-shaped cross sections respectively, and interfaces between the four long wood units 2 with the L-shaped cross sections and the concrete core column 1 with the U-shaped wing are bonded and fixed by first structural adhesive, so that a concrete-small short wood combined column with the U-shaped wing steel tube and the rectangular cross section is formed; the plurality of bamboo plywood 3 are respectively fixed on four side faces of the U-shaped wing steel pipe concrete-small short wood combined column by adopting second bamboo pins 4 and second structural glue so as to completely coat the outer side faces of the U-shaped wing steel pipe concrete-small short wood combined column, wherein the second structural glue is bonded on an interface between the bamboo plywood 3 and the corresponding U-shaped wing steel pipe concrete-small short wood combined column.
Specifically, the concrete-filled steel tube core column 1 with the U-shaped wings comprises a concrete-filled steel tube core column 11 and four U-shaped wing T-shaped steel plates 12, web plates 122 of the four U-shaped wing T-shaped steel plates 12 are vertically arranged and are respectively welded and fixed on four side faces of the concrete-filled steel tube core column 11, the cross section of the whole formed by the four web plates 122 and the concrete-filled steel tube core column 11 is approximately cross-shaped, folded edges 1211 of wing plates 121 of the four U-shaped wing T-shaped steel plates are respectively located on two sides of the web plates 122, and empty areas between every two adjacent U-shaped wing T-shaped steel plates 12 form an occlusion installation area 13; it can be understood that the four long wood units 2 with the L-shaped cross sections can be firmly pulled and connected and fixed reliably by embedding the folded edges 1211 of the wing plates 121 of the four U-shaped wing T-shaped steel plates into the four long wood units 2 with the L-shaped cross sections; the concrete filled steel tube core column 11 and the four U-shaped wing T-shaped steel plates 12 are welded and fixed to achieve the core compression resistance effect.
The two outer side end faces of the four long wood units 2 with the L-shaped cross sections are respectively provided with a rabbet 21, the four long wood units 2 with the L-shaped cross sections are formed by splicing a plurality of small short wood into long wood 22 with a rectangular cross section by adopting a first bamboo pin and latex, and then processing the long wood 22 with the rectangular cross section according to design requirements, wherein the latex is bonded on the interface between every two adjacent small short wood; a part of the four long wood units 2 with the L-shaped cross sections are respectively embedded in the four occlusion installation areas 13 in a one-to-one corresponding and adaptive manner, folded edges 1211 on the four wing plates 121 are respectively embedded in grooves and tongues 21 of the corresponding long wood units 2 with the L-shaped cross sections, and interfaces between the four long wood units 2 with the L-shaped cross sections and the concrete core column 1 with the U-shaped wing are bonded and fixed by adopting first structural adhesive, so that the concrete-small short wood combined column with the U-shaped wing steel tube with the rectangular cross section is formed; it can be understood that the plurality of small short woods are spliced into the long wood unit 2 with the L-shaped cross section in a staggered mode through the first bamboo pins and the latex, a double connecting interface with mechanical connection and interface bonding complementation is formed between every two adjacent small short woods, the mechanical biting force between the small short woods can be enhanced, the cost of the long wood unit 2 with the L-shaped cross section is low, the stress performance is good, wood resources are fully recycled, and waste of the wood resources is reduced; the four L-shaped section log units 2 are partially embedded in the four occlusion installation areas 13 in a one-to-one corresponding manner, the folded edges 1211 of the four wing plates 121 are embedded in the tongue-and-groove 21 of the corresponding L-shaped section log units 2, and the interfaces between the four L-shaped section log units 2 and the concrete core column 1 with the U-shaped wing are bonded and fixed by first structural adhesive, so that the matching interface mechanical connection and the interface bonding complementary dual connection interface between the four L-shaped section log units 2 and the concrete core column 1 with the U-shaped wing are realized, and the concrete-small short log combined column with the U-shaped wing with the rectangular section is simple and reliable in structure. In addition, the tensile property and the shearing resistance of the first bamboo pin are obviously better than those of a wooden pin, so that the defect that a steel screw is easy to rust is overcome, and the first bamboo pin has enough strength and rigidity required by wood connection; the latex has the advantages of firm bonding, good water resistance and weather resistance, and can reliably bond a plurality of small short woods; the structural adhesive is high in strength, resistant to stripping and impact, capable of bearing large loads, resistant to aging, fatigue and corrosion, simple and convenient in construction process, stable in performance within the expected service life of the structure and wide in application range, and therefore the first structural adhesive can reliably bond the four long wood units 2 with the L-shaped cross sections and the concrete core column 1 with the U-shaped wing steel tube.
The plurality of bamboo plywood 3 are respectively fixed on four side faces of the U-shaped wing steel pipe concrete-small short wood combined column by adopting second bamboo pins 4 and second structural glue so as to completely coat the outer side faces of the U-shaped wing steel pipe concrete-small short wood combined column, wherein the second structural glue is bonded on an interface between the bamboo plywood 3 and the corresponding U-shaped wing steel pipe concrete-small short wood combined column. It can be understood that the corrosion resistance, water resistance, fire resistance, compression resistance, tensile resistance, bending resistance and the like of the bamboo plywood 3 are all obviously better than those of a wood template, the turnover times are also obviously more than those of the wood template, the working stability and the safety are good, the tensile strength of the bamboo plywood 3 is strong, the bamboo plywood 3 is positioned around the U-shaped wing steel pipe concrete-small short wood combined column with the rectangular cross section, the bending rigidity, the bending resistance bearing capacity and the shearing resistance bearing capacity of the combined column are obviously improved, and the stability is good; the plurality of bamboo rubber plates 3 are respectively fixed on four side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column through the second bamboo pins 4 and second structural adhesive to form a matching interface mechanical connection and an interface bonding complementary dual connection interface between the bamboo rubber plates 3 and the U-shaped wing steel pipe concrete-small short wood combined column, so that the bamboo rubber plates 3 and the U-shaped wing steel pipe concrete-small short wood combined column are reliably fixed, in addition, the tensile property and the shearing resistance of the second bamboo pins 4 are obviously better than those of wooden pins, the defect that steel screws are easy to rust is overcome, and the wood connecting pins have enough strength and rigidity required by connecting wood; the structural adhesive has high strength, is anti-stripping and impact-resistant, can bear larger load, is aging-resistant, fatigue-resistant and corrosion-resistant, has simple and convenient construction process, stable performance within the expected service life of the structure and wide application range, and can reliably bond the bamboo plywood 3 and the U-shaped wing steel pipe concrete-small short wood combined column.
The combined rectangular section column 1000 according to the embodiment of the first aspect of the present invention is manufactured by the following steps: firstly, a concrete-filled steel tube core column 1 with U-shaped wings is manufactured, a concrete-filled steel tube core column 11 and U-shaped wing T-shaped steel plates 12 are designed and manufactured according to performance requirements, and web plates 122 of the four U-shaped wing T-shaped steel plates 12 are vertically arranged and are respectively welded and fixed on four side faces of the concrete-filled steel tube core column 11, so that the cross section of the whole body formed by the four web plates 122 and the concrete-filled steel tube core column 11 is approximately cross-shaped, and the concrete-filled steel tube core column 1 with the U-shaped wings defines four occlusion mounting areas 13; then, making L-shaped section long wood units 2, splicing and fixing two adjacent small short wood pieces to rectangular section long wood materials 22 through first bamboo pins, bonding and fixing a connecting interface between each two adjacent small short wood pieces by latex, processing the rectangular section long wood materials 22 into the L-shaped section long wood units 2 according to design requirements, then making U-shaped wing concrete-small short wood combined columns, coating first structural glue on the connecting interfaces of the four L-shaped section long wood units 2 and the U-shaped wing concrete core column 1, pushing the four L-shaped section long wood units 2 into the four engaging and mounting areas 13 of the U-shaped wing concrete core column 1 from one ends of the four engaging and mounting areas 13 of the U-shaped wing concrete core column 1, so that a part of the four L-shaped section long wood units 2 are respectively correspondingly and adaptively embedded into the four engaging and mounting areas 13 of the U-shaped steel tube concrete core column 1 one by one wing, the small short wood is spliced in a staggered manner to form a U-shaped wing concrete filled steel tube-small short wood combined column with a rectangular section; finally, the bamboo plywood 3 is connected with the U-shaped wing steel pipe concrete-small short wood combined column, the plurality of bamboo plywood 3 are respectively adhered to the outer side face of the U-shaped wing steel pipe concrete-small short wood combined column through second structural adhesive to coat the whole outer side face of the U-shaped wing steel pipe concrete-small short wood combined column, after the bonding strength meets the requirement, holes for the second bamboo pins 4 to be pinned into the bamboo plywood 3 and the L-shaped section long wood units 2 are punched according to the design arrangement, then the second latex is coated on the surfaces of the second bamboo pins 4 and then is pinned into the holes, and a dual connection interface of mechanical connection and complementary interface bonding of matching interfaces between the four L-shaped section long wood units 2 and the bamboo plywood 3 is formed.
The combined rectangular-section column 1000 according to the embodiment of the first aspect of the present invention has the following advantages: the method comprises the following steps that firstly, a concrete-filled steel tube core column 1 with U-shaped wings can be automatically adjusted and designed based on the stress requirement of a combined column, and the concrete-filled steel tube core column 1 with the U-shaped wings, which has good compression resistance, is adopted at the core pressed part; the U-shaped wing T-shaped steel plates 12 are arranged on the periphery of the concrete filled steel tube core column 11 with large bending stress, the effects of resisting compression and strengthening the connection between long wood units are achieved, the design is flexible, the stress is reasonable, and steel is saved; secondly, the long wood units 2 with the L-shaped cross sections are formed by splicing the small short wood in a staggered manner based on the stress requirement of the combined column, the small short wood are connected by adopting cylindrical bamboo pins and gluing, the long wood units of the high-performance connecting interface with mechanical engagement and full-interface gluing synergistic stress between the formed small-section short wood are close to the whole wood in performance, the tensile property and the shear resistance of the bamboo pins are obviously better than those of the wood pins, the defects that steel screws are easy to rust are overcome, and the long wood units have enough strength and rigidity required by wood connection; thirdly, the bamboo plywood 3 with the tensile strength and the compressive strength which are 2 times of those of the wood is adopted to cover the periphery of the combined rectangular column with the largest bending resistance stress, so that the bending rigidity, the bending resistance bearing capacity and the shearing resistance bearing capacity of the combined column are obviously improved, and the rigidity, the strength and the stability of the combined column are obviously improved compared with those of the traditional log column with the same wood and the same cross section, the combined column is efficiently matched with the steel pipe concrete core column 11, the U-shaped wing T-shaped steel plate 12 and the L-shaped cross section long wood unit 2 formed by splicing the short wood in a staggered manner based on the stress requirement of the combined column, the advantages of different materials are combined, the combined column is integrally formed through firm interface connection, and the good stress performance with controllable design is difficult to achieve by the whole log rectangular column; fourthly, the small-section short wood, the bamboo plywood 3 and the steel pipe concrete core column 1 with the U-shaped wings are organically combined, the structure is simple, the connection is reliable, the ecological environment is protected, and the recycling of small-section waste logs and residual small-section wood processed in the wood industry and the comprehensive utilization of a large amount of ecological bamboo can be powerfully promoted; fifthly, the whole combined rectangular section column 1000 does not have an exposed steel part, namely the steel part is completely wrapped by wood and bamboo, so that the durability of the combined column is obviously improved, the combined column is very suitable for a countryside building structure with large volume and wide range, and the appearance of the combined column has the ecological sense of a traditional wood-bamboo structural column.
According to an embodiment of the first aspect of the present invention, the concrete-filled steel tube core column 11 is fabricated by pouring fine gravel concrete 112 into a rectangular steel tube 111, a square steel tube 111, or a round steel tube 111. Thus, the concrete filled steel tube core column 11 has good compression resistance.
According to a further embodiment of the first aspect of the present invention, the wall thickness of the steel tube 111 in the concrete filled steel tube core column 11 is not less than 2mm, the strength grade of the fine concrete 112 is not less than 20MPa, and the particle size of the coarse aggregate in the fine aggregate concrete 112 is not more than 100 mm. Therefore, the rigidity and strength of the concrete filled steel tube core column 11 can be ensured.
It should be noted that the concrete 112 may be ordinary concrete 112 or recycled concrete 112, and the coarse aggregate of the recycled concrete 112 is obtained by crushing and screening the waste concrete 112 blocks in the construction waste.
According to one embodiment of the first aspect of the invention, the strake 121 is a cold-formed steel plate. Thus, the wing plate 121 has good rigidity, low cost, and simple molding.
According to a further embodiment of the first aspect of the present invention, the thickness of the wing 121 is not less than 2mm and the thickness of the web 122 is not less than 2 mm. Like this, guaranteed the rigidity and the intensity of pterygoid lamina 121 and web 122, welded fastening between pterygoid lamina 121 and the web 122, and then guarantee that U-shaped wing T shape steel sheet 12 is good to the firm drawknot effect of four L shape cross-section log unit 2, rational in infrastructure, the design is nimble.
According to an embodiment of the first aspect of the invention, the compressive load bearing capacity of the concrete-filled steel tube core column with U-shaped wings 1 is not less than 50% of the overall compressive load bearing capacity of the combined rectangular cross-section column 1000. It can be understood that the concrete-filled steel tube core column 1 with the U-shaped wings can play a role in core compression resistance in the combined rectangular column with the U-shaped wings, namely the concrete-filled steel tube-small short wood-bamboo plywood, so that the compression resistance of the combined rectangular section column 1000 is improved.
According to an embodiment of the first aspect of the present invention, the small short wood is a small short wood having a cross-section size satisfying the design cross-section requirement but not having a length satisfying the 1000 column height requirement of the combined rectangular-section column, or a small short wood having a cross-section size not satisfying the design cross-section requirement and not having a length satisfying the 1000 column height requirement of the combined rectangular-section column. Therefore, the waste small-section logs and the residual section size of the wood processing factory can be recycled, and the utilization rate of the small short wood is improved, wherein the waste small-section logs and the residual section size of the wood processing factory meet the design section requirement, but the length of the waste small-section logs does not meet the 1000-column-height requirement of the combined rectangular-section column, or the waste small-section logs and the residual section size of the wood processing factory do not meet the design section requirement, and the length of the waste small-section logs and the residual section size of the wood processing factory do not meet the 1000-column-height requirement of the combined rectangular-section column.
According to an embodiment of the first aspect of the present invention, the thickness of the bamboo plywood 3 is not less than 10mm, so that the tensile strength of the bamboo plywood 3 can be ensured, and the bending rigidity, the bending bearing capacity and the shearing resistance bearing capacity of the composite column can be ensured; the butt joint angle between every two adjacent bamboo plywood 3 which are vertically intersected is 45 degrees, the structure is simple, and the every two adjacent bamboo plywood 3 can be quickly assembled and butted and conveniently bonded and fixed with the U-shaped wing steel pipe concrete-small short wood combined column.
A second embodiment of the present invention also provides a method for making a composite rectangular-section pillar 1000 as described in any of the first embodiments above.
The method for manufacturing the combined rectangular-section column 1000 according to the embodiment of the second aspect of the present invention includes the following steps:
manufacturing a concrete filled steel tube core column with U-shaped wings 1: designing and manufacturing a concrete-filled steel tube core column 11 and a U-shaped wing T-shaped steel plate 12 according to performance requirements, vertically arranging web plates 122 of the four U-shaped wing T-shaped steel plates 12 and respectively welding and fixing the web plates on four side surfaces of the concrete-filled steel tube core column 11, so that the cross section of the whole formed by the four web plates 122 and the concrete-filled steel tube core column 11 is approximately cross-shaped, and the concrete-filled steel tube core column 1 with the U-shaped wings defines four occlusion installation areas 13;
specifically, at first according to design demand design steel pipe 111 and selection concrete 112, pour pea gravel concrete 112 in rectangle steel pipe 111, square steel pipe 111 or round steel pipe 111 form concrete filled steel core post 11, secondly, web 122 and pterygoid lamina 121 welded fastening with four U-shaped wing T shape steel sheets 12, finally, be vertical setting with web 122 of four U-shaped wing T shape steel sheets 12 and adopt the mode welded fastening of two side fillet weld respectively on concrete filled steel core post 11's four sides, make the holistic cross section of four webs 122 and concrete filled steel core post 11 constitution roughly cross, thereby make take U-shaped wing concrete filled steel core post 1 to inject four interlock installing areas 13.
Manufacturing the long wood unit 2 with the L-shaped section: splicing a plurality of small short wood into long wood 22 with a rectangular cross section by adopting a first bamboo pin and latex, wherein the latex is connected to the interface between every two adjacent small short wood, and then processing the long wood 22 with the rectangular cross section into a long wood unit 2 with an L-shaped cross section according to the design requirement, so that a part of the long wood unit 2 with the L-shaped cross section can be embedded in the occlusion installation area 13 in a matching way;
specifically, two adjacent small short woods are spliced and fixed to the long wood timber 22 with the rectangular cross section through the cylindrical bamboo pins, the connecting interface between each two adjacent small short woods is bonded and fixed through latex, and then the long wood timber 22 with the rectangular cross section is processed into the long wood unit 2 with the L-shaped cross section according to design requirements.
Manufacturing a U-shaped wing steel pipe concrete-small short wood combined column: after coating a first structural adhesive on the connection interface of the four L-shaped section long wood units 2 and the concrete-filled steel tube core column 1 with the U-shaped wings, embedding parts of the four L-shaped section long wood units 2 into four occlusion installation areas 13 of the concrete-filled steel tube core column 1 with the U-shaped wings in a one-to-one corresponding and adaptive manner respectively, so as to form the concrete-filled steel tube-small short wood combined column with the rectangular section and the U-shaped wings;
specifically, after the first structural adhesive is coated on the connecting interface of the four long wood units 2 with the L-shaped cross sections and the concrete-filled steel tube core column 1 with the U-shaped wings, the four long wood units 2 with the L-shaped cross sections are pushed into one end of the four occlusion installation areas 13 of the concrete-filled steel tube core column 1 with the U-shaped wings, so that one part of each of the four long wood units 2 with the L-shaped cross sections is embedded into the four occlusion installation areas 13 of the concrete-filled steel tube core column 1 with the U-shaped wings in a one-to-one corresponding and adaptive manner, and the small short wood is spliced in a staggered manner to form the concrete-small short wood combined column with the U-shaped wings and the rectangular cross sections.
Connecting the bamboo plywood 3 with the U-shaped wing steel pipe concrete-small short wood combined column: firstly, a plurality of bamboo plywood 3 are respectively adhered to the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, holes for the second bamboo pins 4 to be pinned into the bamboo plywood 3 and the long wood units 2 with the L-shaped cross sections are punched according to design arrangement after the bonding strength meets the requirement, and then the second latex is coated on the surfaces of the second bamboo pins 4 and is pinned into the holes, so that the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined rectangular column is formed.
Specifically, the plurality of bamboo plywood 3 are respectively adhered to the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, holes for inserting the second bamboo pins 4 into the bamboo plywood 3 and the L-shaped section long wood units 2 are punched according to design arrangement after the adhesive strength meets the requirement, then the surfaces of the second bamboo pins 4 are coated with second latex and then are inserted into the holes, and four double connection interfaces of matching surface mechanical connection and interface adhesion complementation between the L-shaped section long wood units 2 and the bamboo plywood 3 are formed.
According to an embodiment of the second aspect of the invention, further comprising the steps of:
surface treatment: and (3) carrying out surface polishing and smoothing treatment on the exposed part of the bamboo plywood 3 on the combined rectangular column with the U-shaped wing steel pipe concrete, the small short wood and the bamboo plywood. It can be understood that the exposed part of the bamboo plywood 3 on the combined rectangular column with the U-shaped wing steel pipe concrete, the small short wood and the bamboo plywood is subjected to surface polishing and smoothing treatment, when the color difference treatment is needed, the color difference treatment is carried out, and then the wood varnish is coated.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A combined rectangular section column is characterized in that the combined rectangular section column is a combined rectangular column with U-shaped wings, namely, concrete-filled steel tubes, small short wood and bamboo plywood, and comprises:
the concrete-filled steel tube core column with the U-shaped wings comprises a concrete-filled steel tube core column and four U-shaped wing T-shaped steel plates, webs of the four U-shaped wing T-shaped steel plates are vertically arranged and are respectively welded and fixed on four side faces of the concrete-filled steel tube core column, the cross section of the whole formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, folded edges of wing plates of the four U-shaped wing T-shaped steel plates are respectively located on two sides of the webs, and dead zones between every two adjacent U-shaped wing T-shaped steel plates form occlusion mounting zones;
the wood-making machine comprises four long wood units with L-shaped cross sections, wherein the two outer side end faces of the four long wood units with the L-shaped cross sections are respectively provided with a rabbet, the four long wood units with the L-shaped cross sections are formed by splicing a plurality of small short wood into long wood with a rectangular cross section by adopting a first bamboo pin and latex, and then processing the long wood with the rectangular cross section according to design requirements, wherein the latex is bonded on the interface between every two adjacent small short wood; one part of each of the four long wood units with the L-shaped cross section is embedded in the four occlusion installation areas in a one-to-one corresponding and adaptive manner, the folded edges of the four wing plates are embedded in the tongue-and-groove of the corresponding long wood unit with the L-shaped cross section, and interfaces between the four long wood units with the L-shaped cross section and the concrete core column with the U-shaped wing are bonded and fixed by first structural adhesive, so that a concrete-small short wood combined column with the U-shaped wing and the rectangular cross section is formed;
The plurality of bamboo rubber plates are respectively fixed on four side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by adopting second bamboo pins and second structural adhesive so as to completely coat the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column, wherein the second structural adhesive is bonded on an interface between each bamboo rubber plate and the corresponding U-shaped wing steel pipe concrete-small short wood combined column.
2. The composite rectangular cross-section column of claim 1, wherein said concrete-filled steel tube core column is fabricated by pouring fine concrete into a rectangular, square or round steel tube.
3. The composite rectangular section column according to claim 2, wherein a wall thickness of a steel pipe in said concrete-filled steel tube core column is not less than 2mm, said fine crushed concrete strength grade is not less than 20MPa, and a particle size of coarse aggregate in said fine stone concrete is not more than 100 mm.
4. A composite rectangular section column according to claim 1, wherein said strake is a cold-formed steel plate.
5. The composite rectangular cross-section post of claim 4, wherein said wing plate has a thickness of not less than 2mm and said web has a thickness of not less than 2 mm.
6. The composite rectangular cross-section column of claim 1, wherein said concrete filled steel tube core column with U-shaped wings has a compressive load bearing capacity of not less than 50% of the overall compressive load bearing capacity of said composite rectangular cross-section column.
7. The composite rectangular section column according to claim 1, wherein said small joists are small joists having a cross-section size that meets the design cross-section requirements but does not have a length that meets the height requirements of said composite rectangular section column, or said small joists are small joists having a cross-section size that does not meet the design cross-section requirements nor have a length that meets the height requirements of said composite rectangular section column.
8. The assembled rectangular cross-section column of claim 1, wherein said bamboo plywood is not less than 10mm thick, and a butt joint angle between two adjacent bamboo plywood sheets perpendicularly intersecting is 45 degrees.
9. A method of making a composite rectangular cross-section column according to any one of claims 1 to 8, comprising the steps of:
manufacturing the concrete-filled steel tube core column with the U-shaped wings: designing and manufacturing the concrete-filled steel tube core column and the U-shaped wing T-shaped steel plates according to performance requirements, and vertically arranging webs of the four U-shaped wing T-shaped steel plates and respectively welding and fixing the webs on four side surfaces of the concrete-filled steel tube core column, so that the cross section of the whole formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, and the concrete-filled steel tube core column with the U-shaped wings defines four occlusion installation areas;
Manufacturing the long wood unit with the L-shaped section: splicing a plurality of small short wood pieces into long wood pieces with rectangular cross sections by adopting the first bamboo pins and the latex, wherein the latex is connected to the interface between every two adjacent small short wood pieces, and then processing the long wood pieces with the rectangular cross sections into the long wood units with the L-shaped cross sections according to the design requirement, so that one part of the long wood units with the L-shaped cross sections can be embedded in the occlusion installation area in a matching manner;
manufacturing the U-shaped wing steel pipe concrete-small short wood combined column: after coating a first structural adhesive on the connection interface of the four long wood units with the L-shaped cross sections and the concrete-filled steel tube core column with the U-shaped wings, embedding a part of the four long wood units with the L-shaped cross sections into the four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wings in a one-to-one corresponding and adaptive manner respectively, so as to form the concrete-filled steel tube-small short wood combined column with the rectangular cross section and with the U-shaped wings;
connecting the bamboo plywood with the U-shaped wing steel pipe concrete-small short wood combined column: firstly, respectively sticking a plurality of bamboo plywood plates on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, after the bonding strength meets the requirement, punching holes for the second bamboo pins to be pinned into the bamboo plywood plates and the L-shaped section long wood units according to the design arrangement, then coating the second latex on the surfaces of the second bamboo pins, and then pinning into the holes, thereby forming the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined rectangular column.
10. The method of making a composite rectangular cross-section post of claim 9, further comprising the steps of:
surface treatment: and (3) carrying out surface polishing and smoothing treatment on the exposed part of the bamboo plywood on the U-shaped wing-provided steel pipe concrete-small short wood-bamboo plywood combined rectangular column.
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Application publication date: 20211001 |