CN101270604B - Production method and usage of novel section profiled bar - Google Patents

Abstract

The invention relates to weld a vice leg with proper width and thickness at the two ends of the two legs of an H steel with a reasonable lumbar-leg ratio to become a novel section steel. Compared with the H steel, the novel section steel has the same single weight, but the bearing capacity is improved by 9 to 18 times; the novel section steel is suitable for column (pile) components of a building or a bar component of a structure. The novel section structure of the invention can also be applied to other metals like aluminum alloy, titanium alloy and stainless steels non-metals like glass fiber reinforced plastic, engineering plastics and carbon fibers, etc. The novel section column (pile) or rod manufactured by the material not only saves material but also improves the bearing capacity and anti-torsion capacity.

Description

The Manufacturing approach and use of novel section profiled bar

Technical field

The present invention relates to a kind of economic section shaped steel.

Technical background

Existing H shaped steel is as post (stake) member, though brought into play important function at building field, it exists can not save steel, improves the deficiency of weight capacity.

Summary of the invention

Novel section profiled bar is the modified of H shaped steel.It is the secondary leg of suitable thickness and width of burn-oning respectively at the two ends of H shaped steel two legs, becomes novel section profiled bar.After the size of novel section profiled bar all size was determined, the user welded secondary leg according to size and gets final product.And the formation of each size of specification of novel section profiled bar but takes twists and turns.Below the origin of each size of specification of just more small-sized novel section profiled bar explanation: the first step, formulation table 1 be H shaped steel Y to X to bending resistance multiple table, (being called for short the multiple table).H type steel model, specification are more, and each specification Y is to inequality to bending resistance with X, especially 2: 1 and 3: 1 types, and its Y is to differing bigger with X to bending resistance.Novel section profiled bar make every effort to its Y to X to the consistent or basically identical of bending resistance, just can obtain the optimum value of weight capacity.The vertical weight capacity of H shaped steel is directly proportional to bending resistance with level, and promptly to where bending resistance is big for level, and vertical weight capacity is also big; Otherwise it is more little.Depend on short slab rather than long slab as the wooden barrel volume, the novel section profiled bar weight capacity depend on weak to rather than by force to.Because the specification of each model is more, table 1 has only been enumerated and has been tested with less several specifications.Second step, formulation table 2 be the secondary leg of H shaped steel burn-on back Y to the correspondence table (abbreviation correspondence table) of X to the lift multiple.The width and the thickness of the secondary leg of novel section profiled bar of all size is decided in this voting.The matrix of novel section profiled bar is that H shaped steel can rollingly weld, and the secondary leg of novel section profiled bar can only weld too greatly because of its rolling difficulty.No matter machinery is weldering or the secondary leg of hand welding automatically, all need certain sight line, so secondary leg width has certain limitation.The present invention select the secondary leg of 3: 1 type novel section profiled bars wide for 50%, 2: 1 wide type of leg be that 37.5%, 1: 1 type is 25% (seeing Table 2).When secondary leg width is the wide certain proportion of leg, progressively increase secondary leg thickness, novel section profiled bar Y to X to certain lift (lift refers to that bending resistance rises) all occurring.Design 1: 1 leg waist with thick, 2: 1 legs than the thick 2mm of waist, 3: 1 legs novel section profiled bar than three models of the thick 2mm of waist, must search multiple table and correspondence table, and the novel section profiled bar design formulas a * b ≈ c that uses the present invention to provide, a is the multiple of certain specification in the multiple table in the formula, b be in the correspondence table certain hurdle Y to the lift multiple, c be in the correspondence table in the above-mentioned hurdle X to the lift multiple.Be that leg is thicker than waist mostly in the H shaped steel standard both at home and abroad, this is the result of test.Novel section profiled bar matrix leg waist thickness rate is through the test of contrast property, according to the principle of " substance is identical, and weight capacity is greatly excellent ", determine 1: 1 type novel section profiled bar leg waist with thick for excellent, 2: 1 and 3: 1 type novel section profiled bar legs are excellent than the thick 2mm of waist.

Novel section profiled bar is compared with H shaped steel as post (stake) type member, and 1: 1 type: substance is identical, and weight capacity improves 9 times; Substance subtracts 50%, and weight capacity still improves 4.5 times.2: 1 types: substance is identical, and weight capacity improves 18 times; Substance subtracts 50%, and weight capacity still improves 9 times.3: 1 types: substance is identical, and weight capacity improves 17 times; Substance subtracts 50%, and weight capacity still improves 8.5 times.China's Hubei daily paper (2007.9.14) carries: the highest steel building in the world (high 492 meters) Chinese Shanghai Global Finance center invests 7,000,000,000.No matter its steel column as adopting the novel section profiled bar post, is saved steel plate at least 50% with how many tons of steel.Steel work industrial premises and esidential building building steel column as adopting the novel section profiled bar post, also can be saved steel at least 50%.

Novel section profiled bar not only can be made building strut (stake) type member, also can make structure bar type member, as high-voltage fence iron tower, electric pole, wind driven generator upright tube etc.Make power grid iron tower, both saved steel, account for the arable land less, improve weight capacity and anti-twisting property again.Bar type member is good with taper (up-small and down-big).New section structure also can be used for other metal species such as aluminium alloys, titanium alloy, stainless steel etc., non-metal kind such as glass fiber reinforced plastic, engineering plastics, carbon fiber etc.New section type post (stake) or bar that above-mentioned material is made had both been saved material, improved weight capacity and anti-twisting property again.

Description of drawings

Fig. 1 is a novel section profiled bar left view of the present invention, and wherein H is a height, and B is that leg is wide, t ₁For waist is thick, t ₂For leg is thick, C is that secondary leg is wide, t ₃For secondary leg thick.

Fig. 2 is a novel section profiled bar front view of the present invention.

The specific embodiment

Embodiment 1: designing 1: 1 less novel section profiled bar of type of a pair is that 30 * 30 * 2 * 2H shaped steel becomes novel section profiled bar.Known 1: 1 type leg waist with thick be excellent.Learn that from the multiple table its Y is to bigger 3.8 times to bending resistance than X; Look into correspondence table again, see " secondary leg is than the thick 10mm of leg " hurdle earlier, Y is 5 times to lift as can be known, and this H shaped steel 12mm that burn-ons is thick that is to say, behind the secondary leg of wide=30 * 25%=7.5mm, Y to resistance to bending to big by 19 (3.8 * 5) doubly than X, this hurdle X is to 20.5 times of lift, according to formula, bigger, can.After this H shaped steel became novel section profiled bar, weight capacity improved 19 times, and substance only increases by 2 times.

Embodiment 2: design 2: 1 less novel section profiled bars of type of a pair, promptly 60 * 30 * 2 * 4H shaped steel becomes novel section profiled bar.The type leg was excellent than the thick 2mm of waist in known 2: 1.Look into the multiple table earlier, learn its Y to bending resistance than X to big 10.18 times.Look into correspondence table again, see " secondary leg is than the thick 14mm of leg " hurdle earlier, Y is to 4 times of lift, so 10.18 * 4=40.73 doubly, and this hurdle X is to 45 times of lift, the latter is bigger, according to formula, does not conform to; Take a fancy to a hurdle " secondary leg is than the thick 12mm of leg " again, Y is to 3.7 times of lift, so 10.18 * 3.7=37.6 doubly, and this hurdle X, closes according to formula to 37.5 times of lift.From then on the hurdle can be found out, the thick 16mm of secondary leg, wide 30 * 37.5%=11.25mm.This specification novel section profiled bar weight capacity is bigger 37.5 times than this specification H shaped steel, and substance only increases by 2 times.Should be noted that: 37.5 times of this columns are compared for 40.73 times with next group, and under the identical situation of substance, this column novel section profiled bar weight capacity is but greater than the next group novel section profiled bar.As seen secondary leg is not to select thick more well more.

Embodiment 3: design 3: 1 less novel section profiled bars of type of a pair, promptly 90 * 30 * 2 * 4H shaped steel becomes novel section profiled bar.The type leg was excellent than the thick 2mm of waist in known 3: 1.Look into earlier the multiple table learn its Y to resistance to bending than X to big 22.3 times; Look into correspondence table again, see " secondary leg is than the thick 8mm of leg " hurdle earlier, Y is to 1.5 times of lift, so 22.3 * 1.5=33.45 doubly, and this hurdle X is to 30 times of lift, the latter is less, according to formula, does not conform to; See next group " secondary leg is than the thick 10mm of leg " again, Y is to 1.6 times of lift, so 22.3 * 1.6=35.68 doubly, and this hurdle X is to 41 times of lift, the latter is bigger, according to formula, does not also conform to.What if? can suppose a hurdle " secondary leg is than the thick 9mm of leg " between Liang Lan, according to hurdle reckoning up and down, its Y is to 1.55 times of lift, and X is to 35 times of lift.22.3 * 1.55=34.56 doubly according to formula, closes so.Hence one can see that, the thick 13mm of secondary leg, and wide is 30 * 50%=15mm.This novel section profiled bar weight capacity is bigger 34.5 times than this H shaped steel, and substance only increases by 1.9 times.Should be noted that: learn this hypothesis hurdle novel section profiled bar as calculated than a last hurdle or next group novel section profiled bar, under the substance same case, it is big that its weight capacity is all wanted.As seen secondary leg is thick not all right, has approached also not all right, suitable thickness.

Welding, check novel section profiled bar main points: the manual welding novel section profiled bar, if sight line is bad, welding rod can be pulled curved weldering, postwelding bar mirror self check; Machinery is the welding novel section profiled bar automatically, must make improvements to welding available bar mirror contraposition by the butt welding machine head; Can use bar mirror during check checks.

Table 1 Y to X to resistance to bending multiple table

Model	Leg waist thickness	Specification	Y is to bigger to resistance to bending than X
				1:1?	The leg waist is with thick	H30×30×2×2?	3.8 doubly
2:1?	Leg is than the thick 2mm of waist	H60×30×2×4?	10.2 doubly
				3:1?	Leg is than the thick 2mm of waist	H90×30×2×4?	22.3 doubly

Claims (1)

1. a novel section profiled bar is the secondary leg of suitable width and thickness of burn-oning at the rational two ends of the H shaped steel two legs of waist leg proportioning, it is characterized in that: design 1: 1 leg waist with thick, leg was than the thick 2mm of waist in 2: 1,3: 1 legs are than the novel section profiled bar of three models of the thick 2mm of waist, the matrix that must search novel section profiled bar be H shaped steel Y to X to bending resistance multiple table (being called for short the multiple table), see Table 1, with secondary leg burn-on back novel section profiled bar Y to X to lift multiple correspondence table (abbreviation correspondence table), see Table 2, and utilization novel section profiled bar design formulas a * b ≈ c calculates and just can produce novel section profiled bar, a is the multiple of certain specification in the multiple table in the design formulas, b be in the correspondence table certain hurdle Y to the lift multiple, c be in the correspondence table in the above-mentioned hurdle X to the lift multiple.

Table 1 multiple table

Model Leg waist thickness Y to resistance to bending and X to resistance to bending ratio 1∶1 The leg waist is with thick 3.8 doubly 2∶1 Leg is than the thick 2mm of waist 10.2 doubly 3∶1 Leg is than the thick 2mm of waist 22.3 doubly

Table 2 correspondence table

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