A kind of bamboo wood-steel pipe
Technical field
The utility model belongs to civil engineering structure technical field, and in particular to a kind of composite pipe, especially a kind of bamboo
Material-steel pipe.
Background technology
Domestic and foreign scholars have carried out substantial amounts of research and application, the bearing capacity of steel pipe to steel pipe composite construction for many years
High, easy processing, when steel pipe load is larger, member section still can be bigger, now need the thicker steel pipe of wall thickness with
Improve bearing capacity.Therefore, steel using amount is still bigger than normal, and the supply channel of major diameter, thick walled steel tube is few, if using double-deck
Steel pipe, then difficulty of construction is larger, if higher using high strength steel pipe, cost.In addition, steel pipe is chronically exposed to acid rain, seawater
With easy corrosion in the Korrosionsmedium such as salt-soda soil, durability reduces, and causes steel-tube construction bearing capacity to be remarkably decreased.Meanwhile steel
Tubular construction in use, inevitably produces local buckling inwardly or outwardly, so as to play steel well
The material property of material.
For above structure, researcher also continually develop new structure type, make every effort to overcome steel pipe the shortcomings that with deficiency.
Such as Chinese Patent No. " 201120333896.7 " number, a kind of " a kind of FRP material composite stainless steel pipe " is disclosed, but in the structure
Used FRP is fiberglass reinforced plastics, carbon fibre reinforced plastic, Basalt fiber reinforced plastic, aramid fiber enhancing
One kind in plastics or four kinds of fiber hybrid reinforced plastics, these reinforcing materials are the fibre reinforced plastics of high energy consumption, are consumed
A large amount of valuable petroleum resources, product and waste material be not recyclable.
The utility model provides a kind of bamboo wood-steel pipe, to overcome defect present in prior art, meets engineering
Using needs.
The content of the invention
The purpose of this utility model is to provide a kind of bamboo wood-steel pipe, delays or prevents the office of steel pipe inwardly or outwardly
Portion's flexing, the performance of steel-tube construction is lifted, improve the stress performance and anti-seismic performance of structure, in the severe ring such as humidity, salt-soda soil
There is good durability in border, meanwhile, this structure takes full advantage of China's bamboo resource, and low-carbon environment-friendly, resource can
Regeneration, promote sustainable development.This structure is applied to skyscraper, science of bridge building, underground engineering and harbour under adverse circumstances
In the structures such as engineering.
Therefore, the utility model provides a kind of bamboo wood-steel pipe, it is characterised in that the structure include the compound core pipe of bamboo,
The compound outer tube of steel pipe, bamboo, external protection coating, wherein, the compound core pipe of bamboo is with the compound outer tube of bamboo by longitudinal bamboo strip band and horizontal bamboo
Slight band and continuous uniform winding is layered by resin glue is pasted on the surfaces externally and internally of steel pipe and formed;External protection coating directly coats solidification
In the outer surface of the compound outer tube of bamboo.
Described longitudinal bamboo strip band and the winding number of plies of horizontal bamboo strip band are unrestricted, can be 0 layer, 1 layer or 1 layer
More than, the axis direction of the axis direction of longitudinal bamboo strip band along bamboo wood-steel pipe, the axis direction of horizontal bamboo strip band
Angle between the axis vertical direction of bamboo wood-steel pipe is between -45 ° to 45 °, the axis of each layer transverse direction bamboo strip band
Direction can be with identical or different, and longitudinal bamboo strip band provides longitudinal anti-bending bearing capacity for structure, and horizontal bamboo strip band carries for steel pipe
Constrained for enhancing, delay, postpone the local buckling of steel pipe.
Described longitudinal bamboo strip band and horizontal bamboo strip band slight overlap joint using bamboo, suture or be woven on lining cloth, every layer
0.3~1.5mm of thickness, the width of bamboo strip band is 20~200mm.
Described external protection coating can use the materials such as epoxy resin, unsaturated polyester resin or pitch, and add anti-old
Change filler.
Described resin glue is one kind in epoxy resin, vinylite, polyurethane resin.
The utility model overcomes the deficiency present in known steel-tube construction, delays, postpones the local buckling of steel pipe, carry
High structural bearing capacity and non-deformability, good endurance, meanwhile, cost is low, green, resource is renewable, energy-saving and emission-reduction
Significant effect, economic benefits.Specifically have the beneficial effect that:
(1) combining structure that the structure is made up of bamboo wood, steel pipe different materials, it is respective can to give full play to constituent material
Characteristic:The hoop constraint effect lasting to steel pipe of bamboo wood multiple tube;The elastoplasticity of steel pipe makes structure have good axle calenderability.
(2) bamboo wood has excellent tensile property, winds bamboo wood in steel pipe surfaces externally and internally, can not only reduce the use of steel pipe
Steel amount, steel pipe caused local buckling during axle pressure can also be suppressed, while can be improved again as the protective layer of steel pipe
The durability of structure.
(3) bamboo wood-steel pipe has larger axial rigidity, can be used directly as template, save template
Manufacturing cost, shorten the completion time of project.
(4) traditional material is taken full advantage of --- bamboo, bamboo have matter as a kind of reproducible, environmentally friendly resource
Gently, high intensity, high rigidity, it is corrosion-resistant, cheap the characteristics of, the present invention plays bamboo wood good toughness to greatest extent, longitudinal direction is drawn
Stretch that intensity is high, corrosion resistant material sexual clorminance.
In structure of the present utility model, bamboo multiple tube is using continuous thin bamboo strips used for weaving curtain or bamboo fibre as stock, with tree
Fat is adhesive, is processed into using advanced horizontal and vertical lamination winding process.Play to greatest extent bamboo wood good toughness,
Longitudinal tensile strength is high, corrosion-resistant material performance advantage;And process power consumption is low, pollution is small, and obsolete material is recyclable,
Low-carbon environment-friendly, the energy is saved, energy-saving and emission-reduction, is greatly expanded the scope and sphere of bamboo products application.The utility model structure,
The advantageous feature of steel pipe, bamboo wood is taken full advantage of, achieves preferable combination property, is built suitable for the high level under adverse circumstances
Build, the post in the structure such as science of bridge building, underground engineering and port engineering, bridge pier, pile foundation, truss member etc..
Brief description of the drawings:
Fig. 1 is a kind of circular cross-sectional configuration schematic diagram of bamboo wood-steel pipe;
Fig. 2 is a kind of oval cross section structural representation of bamboo wood-steel pipe;
Fig. 3 is a kind of angular cross-sectional structure schematic diagram of the rounding of bamboo wood-steel pipe;
Fig. 4 is longitudinal bamboo strip band schematic diagram in a kind of bamboo wood-steel pipe;
Fig. 5 is horizontal bamboo strip band schematic diagram in a kind of bamboo wood-steel pipe;
In 1~accompanying drawing of accompanying drawing 5,1 be the compound core pipe of bamboo, 2 be steel pipe, 3 be the compound outer tube of bamboo, 4 be external protection coating, A be
Longitudinal bamboo strip band, B are horizontal bamboo strip band.
Embodiment:
In order to which the technical characteristics of the utility model, purpose and effect are more clearly understood, now control illustrates
The embodiment of the present invention.The utility model provides a kind of bamboo wood-steel pipe, and the structure includes the compound core pipe 1 of bamboo, steel
The compound outer tube 3 of pipe 2, bamboo, external protection coating 4, wherein, the compound core pipe 1 of bamboo is with the compound outer tube 3 of bamboo by longitudinal bamboo strip band A and horizontal stroke
The surfaces externally and internally for being pasted on steel pipe 2 by resin glue layering continuous uniform winding with B to bamboo strip is formed;External protection coating 4 is direct
Coating is solidificated in the outer surface of the compound outer tube 3 of bamboo, and external protection coating 4 can use epoxy resin, unsaturated polyester resin or pitch
Deng material, and add anti-aging filler.
Described longitudinal bamboo strip band A and horizontal bamboo strip band B slights overlap joint using bamboo, sutures or be woven on lining cloth, often
Thickness 0.3~1.5mm of degree, the width of bamboo strip band is 20~200mm.Longitudinal bamboo strip is with the winding of A and horizontal bamboo strip with B
The number of plies is unrestricted, can be 0 layer, 1 layer or more than 1 layer, axis direction of longitudinal bamboo strip with A is along bamboo wood-steel pipe
Axis direction, angle between axis direction of the horizontal bamboo strip with B and the axis vertical direction of bamboo wood-steel pipe-
Between 45 ° to 45 °, each axis direction of the layer transverse direction bamboo strip with B can be with identical or different.
Described resin glue is one kind in epoxy resin, vinylite, polyurethane resin.
The preparation method of bamboo multiple tube:
(1) mao bamboon is split into bamboo to slight, degreasing, cleaning, drying simultaneously control moisture content, slight bamboo connect into one with lining cloth afterwards
The continuous bamboo strip band of bar, 0.3~1.5mm of thickness, bamboo strip 20~200mm of bandwidth, connected mode can be bonding, seam
Close, weave etc.;
(2) by above-mentioned bamboo strip band rolled, referring to accompanying drawing 4, it is coiled after bamboo strip band in cylinder, bamboo strip band
Bamboo slights bamboo fibre direction to roll direction;
(3) bamboo of bamboo strip band is slightd into axis direction of the bamboo fibre direction along bamboo wood-steel pipe to lay, ring winding
Paste and wind longitudinal bamboo strip band A;
(4) bamboo of bamboo strip band is slightd into the angle between bamboo fibre direction and the axis vertical direction of bamboo wood-steel pipe
Wound between -45 ° to 45 °, that is, wind horizontal bamboo strip band B;
(5) longitudinal bamboo strip is unrestricted with the winding number of plies of A and horizontal bamboo strip with B, can be 0 layer, 1 layer or 1 layer
More than;
(6) resin glue is added in winding, resin glue is by one kind in epoxy resin, vinylite, polyurethane resin
Composition, and so on, is wound to design thickness;
(7) solidify by solidification equipment, the body being cured is subjected to surface polishing and finishing.
Embodiment one:
Such as the circular cross-sectional configuration schematic diagram of Fig. 1, the utility model a kind of bamboo wood-steel pipe provided, the structure
Including the compound core pipe 1 of bamboo, steel pipe 2, the compound outer tube 3 of bamboo, external protection coating 4, wherein, the compound core pipe 1 of bamboo and the compound outer tube 3 of bamboo by
Longitudinal bamboo strip is pasted on the surfaces externally and internally shape of steel pipe 2 with A and horizontal bamboo strip with B by resin glue layering continuous uniform winding
Into;Thin bamboo strips used for weaving band is wound using longitudinal bamboo strip with A and horizontal bamboo strip with the combined canoes of B, is first indulged
To winding of the bamboo strip with A, one layer is wound, then carries out winding of the horizontal bamboo strip with B, the winding number of plies is one layer, horizontal bamboo
The angle between band B axis direction and the axis vertical direction of bamboo wood-steel pipe is slightd between -45 ° to 45 °, finally,
In the compound outer surface of the outer tube 3 coating external protection coating 4 of bamboo.
Embodiment two:
Such as the oval cross section structural representation of Fig. 2, the utility model a kind of bamboo wood-steel pipe provided, it has
Body preparation method is the same as embodiment one.
Embodiment three:
Such as the angular cross-sectional structure schematic diagram of rounding of Fig. 3, the utility model a kind of bamboo wood-steel pipe provided, its
Preparation method is the same as embodiment one.
The utility model while structural behaviour is improved, makes full use of compared with existing steel pipe, FRP- steel pipes
The bamboo resource in China, it is high, corrosion-resistant that bamboo wood internal pressure specific strength height, good toughness, longitudinal tensile strength are played to greatest extent
Deng material sexual clorminance, manufacturing process links are " greens ", environment amenable, promote sustainable development, meet constructions and " provide
The national policy requirement of source economizing type ", " environmentally friendly ".