CN104675176A - Support angle steel and steel tower rest platform - Google Patents
Support angle steel and steel tower rest platform Download PDFInfo
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- CN104675176A CN104675176A CN201410718453.8A CN201410718453A CN104675176A CN 104675176 A CN104675176 A CN 104675176A CN 201410718453 A CN201410718453 A CN 201410718453A CN 104675176 A CN104675176 A CN 104675176A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 212
- 239000010959 steel Substances 0.000 title claims abstract description 212
- 238000005452 bending Methods 0.000 claims description 139
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 34
- 229910052742 iron Inorganic materials 0.000 description 17
- 239000002994 raw material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 3
- 206010022114 Injury Diseases 0.000 description 2
- 101710026339 Segment-12 Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000001066 destructive Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
Abstract
The invention belongs to the technical field of angle steel and at least relates to support angle steel. The support angle steel comprises a body and connecting ends at two ends of the body. The body comprises a bent face, a support face as a bearing face and an angle steel edge connecting with the bent face and the support face. From one side of the angle steel edge to the other side of the angle steel edge, a first bent segment to the nth bent segments are sequentially arranged on the bent face, to be specific, the n is 2 or 3, and a 90-segment angle is formed between every two adjacent bent segments. With a certain deformation allowed, the support angle steel is good in the bearing capability.
Description
Technical field
The invention belongs to angle steel technical field, relate to a kind of support angle steel, angle steel of the present invention all refers to equal leg angle, Q345 steel or Q235 steel is adopted to make, the width of indication of the present invention all defines according to describing as follows: what Fig. 1 reflected is a kind of structural representation supported after angle steel bending, supporting surface is represented between AB, the first bending segment is represented between BC, the second bending segment is represented between DE, the width of supporting surface refers to that the starting point A of supporting surface extends the position from A maximum distance that can reach to supporting surface along supporting surface direction, also be B point, distance between AB is exactly the width of supporting surface, the rest may be inferred for the width of other part strut angle steel work, further, the invention still further relates to a kind of steel tower half space.
Background technology
In the world, steel tower is widely used in the support of high voltage transmission line, and high voltage transmission line is once personnel of needing repairing that break down climb up steel tower keeps in repair high-tension line.But the unpromising maintenance personal of general steel tower provides the place can had a rest for it, thus shorten the time of line maintenance personnel continuous firing, reduce efficiency.
Also have technician to make half space specially at present, be then contained on steel tower by platform, this platform comprises framework and is welded on the iron plate on framework, is generally first made by platform by technician, and then is contained on steel tower.But, the platform made because of size larger, to transport bring certain difficulty, and on steel tower in-site installation, need to employ plurality of devices (such as loop wheel machine etc.), significantly increase the cost of whole half space, iron plate easily accumulates rainwater after raining, and cause iron plate block to get rusty, what is more important is along with the expansion of half space function, people require more and more higher to the weight capacity of half space, and existing half space obviously cannot adapt to this requirement.
Summary of the invention
Technical problem to be solved by this invention is the limited load bearing capacities of existing half space, cannot adapt to people to the increasing requirement of half space weight capacity.Before this problem of solution, what first the present invention considered will obtain a kind of alternative iron plate coming exactly supports the braced structures being positioned at weight on half space, general, technician can consider to substitute iron plate with band steel, also can consider that direct angle steel substitutes iron plate, but all there is the technological deficiency being difficult to overcome, for band steel, its weight capacity will have a larger downslide compared to iron plate, and after angle steel bears its limit gravity that can bear, the change of irreversible destructive structure can be there is, the leeway of at all not keeping in repair.Given this, The present invention gives a kind of support angle steel, comprise the link supporting angle steel body and be fixedly connected with platform framework, described support angle steel body comprises bending side, forms the supporting surface in flat top face and connects the angle steel rib of bending side and supporting surface, described bending side is followed successively by the first bending segment to the n-th bending segment from angle steel rib side to opposite side, described n is 2 or 3, in 90 ° of angles between adjacent two bending segments.
If make support angle steel of the present invention stressed, two kinds of deformation will be produced, the i.e. deformation of supporting surface and the deformation of bending side, and the deformation of bending side at least comprises the deformation of the first bending segment and the deformation of the second bending segment, compared to the deformation of band steel in stressed rear generation, no matter the deformation supporting angle steel body quantitatively or in the diversity of deformation mode all exceedes band steel.Be the situation of 2 for n, if apply pressure to support angle steel body, first bending segment near the part of angle steel rib and the first bending segment near the part of the second bending segment by by the elongation of different proportion (i.e. first kind deformation), and the elongation (i.e. Equations of The Second Kind deformation) of overall equal proportion will be there is along the part near the first bending segment in the second bending segment, this just makes described support angle steel body have the weight capacity larger than band steel, general, the weight capacity supporting angle steel body be at least same model (namely thickness and width respectively with angle steel thickness and angle steel supporting surface equal with bending side width summation) 1.5 times of band steel.
Support angle steel provided by the present invention, can allow larger deformation occurs and the weight capacity substantially not changing described support angle steel, and common angle steel ultimate deformation amount be very little (under normal circumstances, two meters of long angle steel, do not produce the prerequisite of slight crack after pressurized under, the maximum horizontal tilt angle alpha at its two ends is generally below 3 °, see Fig. 2), once the gravity that angle steel bears exceedes the tolerance range of angle steel, the change of the destructive structure such as slight crack and even phenomenon of rupture can be produced, whole angle steel is caused to scrap immediately, thus, the technical advantage of support angle steel of the present invention is quite obvious.
The present invention is not particularly limited the physical dimension supporting angle steel body, to weight capacity and material cost as there is no too high requirement, the support angle steel of the support angle steel body of different structure size can be adopted arbitrarily, but the present invention also wishes to support angle steel weight capacity in raising, and reducing the material cost supporting angle steel, obviously such product has more attracting market prospects.
In some embodiments of the invention, n is 2, the width ratio of the first bending segment and the second bending segment controls 1: 5.4 ~ 6, such product often can allow larger deformation quantity occurs, the support angle steel body of two meters long, do not produce the prerequisite of slight crack after pressurized under, the horizontal tilt angle [alpha] at its two ends is between 3.2 ° ~ 6.0 °, with of the same type but width than (consistency of thickness namely compared with the support angle steel body outside this scope, bending side is equal respectively with the width of supporting surface), under the prerequisite of tolerable injury level inclined angle alpha between 3.2 ° ~ 6.0 °, its weight capacity has a considerable improvement, reach 47%-66%, such lifting amplitude is that technician dreamed of, not only can under the prerequisite not increasing material, significantly improve the weight capacity supporting angle steel, and the cost very little (being only generally that increase by step simply bends processing step) increased.
In other embodiments of the present invention, n is 3, first bending segment, the width ratio of the second bending segment and the 3rd bending segment controls 2: 7: 1 ~ 2.5: 9: 1.5, the support angle steel body of two meters long, do not produce the prerequisite of slight crack after pressurized under, the horizontal tilt angle [alpha] at its two ends is between 3.0 ° ~ 5.8 °, with of the same type but width than (consistency of thickness namely compared with the support angle steel body outside this scope, bending side is equal respectively with the width of supporting surface), under the prerequisite of tolerable injury level inclined angle alpha between 3.0 ° ~ 5.8 °, its weight capacity has a considerable improvement, reach 47%-66%.
In order to further illustrate, the present invention is defined following concept:
First contribution rate: the first deformation is to the contribution rate supporting the capability improving of angle steel body;
Second contribution rate: the second deformation is to the contribution rate supporting the capability improving of angle steel body.
Ratio between each bending segment width, the impact of width on the first contribution rate and the second contribution rate is embodied from an angle, the thickness of bending side also can embody the impact of thickness on the first contribution rate and the second contribution rate from another angle, in fact, two kinds of angle impacts on the first contribution rate and the second contribution rate are different, the increase of thickness can increase by the first contribution rate fast, then relatively slow to the lifting of the second contribution rate.But the present invention also finds, at least also have another influent factor can have an impact to two kinds of contribution rates, such as, when n is 2, after bending side generation deformation, second bending segment in fact also not exclusively produces Equations of The Second Kind deformation, to the deformation more close with the second bending segment connecting edge with the first bending segment be there is in the second bending segment the closer to the part of the first bending segment, this just makes the second bending segment when bending side generation deformation, the deformation that the deformation that second bending segment occurs near the first bending segment part and the second bending segment occur away from the first bending segment part is also incomplete same, general, the deformation that the deformation that second bending segment occurs near the first bending segment part can occur away from the first bending segment part than the second bending segment is more violent, and the difference of this deformation can change uniformly along with the distance of deformation second bending segment deformation position and the first bending segment distance, thus also not exclusively there is Equations of The Second Kind deformation in the second bending segment, certain deviation is there is in other words with Equations of The Second Kind deformation, consequently, reduce the second deformation to the contribution rate supporting angle steel body enabling capabilities, the degree weakened is represented by deformation attenuation factor, deformation attenuation factor increases along with the increase of the second bending segment width, and reduce along with the increase of the second bending segment thickness.
By analyzing above, the present invention is carrying out on the basis of width ratio restriction to each bending segment, in order to further obtain more gratifying support angle steel body enabling capabilities, and reduce the quantity of material making and support angle steel body further, contemplated by the invention the impact on the first deformation and the second deformation of thickness and deformation attenuation factor, suggestion is when n is 2, and the width of described first bending segment is 7mm-9mm, the width of the second bending segment is 35mm-48mm, and the thickness of supporting surface is 4mm-6mm.
Have the support angle steel body of above-mentioned size, the support force of a meter long at least reaches 1.62 times of undressed same model band steel support force.Undressed same model band steel of the present invention refers to thickness and band steel that steel using amount with support angle steel body identical identical with support angle steel body thickness, as follows.
Preferred as one, the width of described first bending segment is 8mm, and the width of the second bending segment is 46mm, and the thickness of supporting surface is 5mm, and the support force of a meter long reaches 2.02 times of undressed same model band steel support force.Table 1 be the first bending segment and the second bending segment under different in width, relative to the contrast table of undressed same model band steel support force
Table 1
Note: in table 1, the thickness of the first bending segment and the second bending segment is 4mm-6mm.
When n is 3, the width of described first bending segment is 10mm-12mm, and the width of the second bending segment is 40mm-45mm, and the width of the 3rd bending segment is 5mm-7mm, and the thickness of supporting surface is 5mm-6mm.Have the support angle steel body of above-mentioned size, the support force of a meter long at least reaches 1.75 times of undressed same model band steel support force.
Preferred as one, the width of described first bending segment is 11mm, and the width of the second bending segment is 36mm, and the width of the 3rd bending segment is 6mm, and the thickness of supporting surface is 5mm, and the support force of a meter long reaches 2.21 times of undressed same model band steel support force.Table 2 be the first bending segment, the second bending segment and the 3rd bending segment under different in width, relative to the contrast table of undressed same model band steel support force.
Table 2
Note: in table 2, the thickness of the first bending segment, the second bending segment and the 3rd bending segment is 5mm-6mm.
The premium properties that described support angle steel has, it is made to may be used for making various types of braced structures, the present invention just lists a kind of application scenario, steel tower half space is used for by described support angle steel, described a kind of steel tower half space, comprise and be arranged on platform framework on steel tower and support angle steel, described in be positioned at the link supporting angle steel body two ends and be fixedly connected on platform framework.General, supporting angle steel body bending side is 5mm-15mm near the distance of the end of platform framework and platform framework.
As stated in the Background Art, at present, steel tower half space is by the load-bearing of monoblock iron plate, after iron plate being changed into support angle steel of the present invention, rainwater can be real-time support between angle steel from adjacent two and discharge, greatly reduce the chance of getting rusty, reduce the carrying difficulty of monoblock iron plate, and the performance of weight capacity aspect is excellent.But without a moment's thought, arbitrarily support angle steel of the present invention is used for steel tower half space, probably under some specific load-bearing requirements, increases the cost of manufacture of steel tower half space entirety, weaken the technical advantage supporting angle steel to a certain extent.Therefore, the present invention wishes the amount of the support angle steel that minimizing half space uses as far as possible, and ensures the weight capacity of half space on this basis.
In some embodiments of the invention, when n is 2, the width of supporting surface is 50mm-56mm, adjacent two gaps supported between angle steel are 10mm-25mm, under this condition, the pressure that steel tower half space every square metre can bear is at least 1.12 times that the iron platform identical with its steel using amount can bear pressure.
Preferred as one, the width of supporting surface is 52mm, supporting adjacent two gaps supported between angle steel is 15mm, and now, the pressure that steel tower half space every square metre can bear is 1.34 times-1.42 times that the iron platform identical with its steel using amount can bear pressure.
In other embodiments of the present invention, when n is 3, the width of supporting surface is 58mm-63mm, and adjacent two gaps supported between angle steel are 15mm-30mm.Under this condition, under this condition, the pressure that steel tower half space every square metre can bear is at least 1.16 times that the iron platform identical with its steel using amount can bear pressure.
Preferred as one, the width of supporting surface is 60mm, and supporting adjacent two gaps supported between angle steel is 22mm.Now, the pressure that steel tower half space every square metre can bear is 1.60 times-1.69 times that the iron platform identical with its steel using amount can bear pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation after supporting angle steel bending;
Fig. 2 is the structural representation after the stressed generation deformation of angle steel;
Fig. 3 is n supports the structural representation of angle steel body when being 2;
Fig. 4 is n supports the structural representation of angle steel body when being 3;
Fig. 5 is n supports a perspective view (only showing that supports an angle steel link) of angle steel when being 2;
Fig. 6 is n supports a perspective view (only showing that supports an angle steel link) of angle steel when being 3;
Fig. 7 is the plan structure schematic diagram of triangle steel tower half space.
Detailed description of the invention
This detailed description of the invention remarks additionally to summary of the invention part, technician is not difficult to find out from summary of the invention part, a kind of steel tower half space of the present invention, the weight capacity can taken into account outstanding drainage performance and match in excellence or beauty with the iron plate of stack pile, but the raw material that first will obtain making steel tower half space supports angle steel, it is curved that technician can adopt conventional bending process processed to carry out system to angle steel, and such as this detailed description of the invention is introduced a kind of common bending process processed:
The both ends of raw material angle steel are as the link supporting angle steel, connect the mid portion at raw material angle steel both ends for supporting angle steel body, when n is 2, Bolted angle connection end consistent with structure with the curved mode of this system of angle steel (Fig. 1), once bends.
And when n is 3, Bolted angle connection end kinking structure consistent with the kinking structure when n is 2 (Fig. 1), supporting angle steel body kinking structure is said structure (Fig. 3) in literary composition, the limb limit of the two-end part of raw material angle steel in angle steel rib the same side is first cut by bending method processed, limb limit after the cutting of described angle steel both ends is rolled over to another spring, form the link supporting angle steel, then to raw material angle steel mid portion and describedly cut the coplanar bending side in limb limit to carry out system curved, specifically determine according to the width of each bending segment the position bending rib between adjacent two bending segments, deliver to steel plate bending machine subsequently and carry out 90 ° of bendings along bending rib.
After punching press kinking bundle, then carry out zinc-plated to support angle steel.
In following examples, be made up of Q235B steel for the manufacture of the angle steel supporting angle steel.
Embodiment 1
See Fig. 3 and Fig. 5, a kind of support angle steel, comprise and support angle steel body 5 and be positioned at the support angle steel link 6 supporting angle steel body two ends, described support angle steel body 5 comprises bending side, forms the supporting surface 1 of weight-bearing surface and connects the angle steel rib 20 of bending side and supporting surface 1, described bending side is followed successively by the first bending segment 2 from angle steel rib 20 side to opposite side and is 90 ° of angles between the second bending segment 3, first bending segment and the second bending segment.Technician can support angle steel with corresponding angle steel for raw material obtain described in the present embodiment with reference to the content of detailed description of the invention.
Embodiment 2-10
Angle steel is supported substantially the same manner as Example 1 described in embodiment 2-10, difference is that embodiment 1 does not illustrate the concrete numerical value of the first bending segment, the second bending segment and the thickness supporting angle steel, and described in embodiment 2-10, support the concrete numerical value that angle steel lists the first bending segment, the second bending segment and thickness, table 3 be embodiment 2-10 when the first bending segment, the second bending segment and thickness are different, relative to the contrast table of undressed same model band steel support force.
Table 3
Embodiment 11
See Fig. 4 and Fig. 6, a kind of support angle steel, comprise and support angle steel body 22 and be positioned at the support angle steel link 21 supporting angle steel body two ends, described support angle steel body 22 comprises bending side, forms the supporting surface 11 of weight-bearing surface and connects the angle steel rib 23 of bending side and supporting surface 11, described bending side from angle steel rib 23 side to opposite side be followed successively by the first bending segment 12, second bending segment 13 and the 3rd bending segment 14, first bending segment 12 and the second bending segment 13 and between the second bending segment 13 and the 3rd bending segment 14 all in 90 ° of angles.Technician can support angle steel with corresponding angle steel for raw material obtain described in the present embodiment with reference to the content of detailed description of the invention.
Embodiment 12-20
Angle steel is supported substantially the same manner as Example 2 described in embodiment 12-20, difference is to support described in embodiment 12-20 the concrete numerical value of the first bending segment of angle steel, the second bending segment, the 3rd bending segment and thickness, table 4 be embodiment 12-20 when the first bending segment, the second bending segment, the 3rd bending segment and thickness are different, relative to the contrast table of undressed same model band steel support force.
Table 4
Embodiment 21
See Fig. 7, a kind of steel tower half space, comprise and be arranged on triangular platform framework on steel tower and a row and be arranged parallel to each other and length support angle steel not etc., described support angle steel is by supporting angle steel link, be fixed by bolts in triangular platform framework, described support angle steel can be the support angle steel described in embodiment 2-10, when installing steel tower half space, should select suitable support angle steel that the distance of bending side both ends and triangular planar table frame in support angle steel is remained between 5mm-15mm.
Embodiment 22-26
Described in embodiment 22-26, steel tower half space is substantially the same manner as Example 21, difference is that in steel tower platform described in embodiment 22-26, adjacent two support the gap of angle steel, the first bending segment and the width of the second bending segment and the concrete numerical value of thickness, table 5 is embodiment 22-26 when the width of adjacent two gaps supporting angle steel, the first bending segment and the second bending segment is different with thickness, the contrast table of the support force that the iron plate identical relative to steel using amount can be born.
Table 5
Embodiment 27
See Fig. 7, a kind of steel tower half space, comprise and be arranged on triangular platform framework 31 on steel tower and a row and be arranged parallel to each other and length support angle steel 32 not etc., described support angle steel is by supporting angle steel link, be fixed by bolts in triangular platform framework, described support angle steel can be the support angle steel described in embodiment 12-20, when installing steel tower half space, should select suitable support angle steel that the distance of bending side both ends and triangular planar table frame in support angle steel is remained between 5mm-15mm.
Embodiment 28-33
Described in embodiment 28-33, steel tower half space is substantially the same manner as Example 27, difference is that in steel tower platform described in embodiment 28-33, adjacent two support the gap of angle steel, the first bending segment, the second bending segment and the width of the 3rd bending segment and the concrete numerical value of thickness, table 6 is embodiment 28-33 when the width of adjacent two gaps supporting angle steel, the first bending segment, the second bending segment and the 3rd bending segment is different with thickness, the contrast table of the support force that the iron plate identical relative to steel using amount can be born.
Table 6
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. one kind supports angle steel, comprise and support angle steel body and be positioned at the link supporting angle steel body two ends, described support angle steel body comprises bending side, forms the supporting surface of weight-bearing surface and connects the angle steel rib of bending side and supporting surface, described bending side is followed successively by the first bending segment to the n-th bending segment from angle steel rib side to opposite side, described n is 2 or 3, in 90 ° of angles between adjacent two bending segments.
2. one according to claim 1 supports angle steel, it is characterized in that the width ratio of the first bending segment and the second bending segment controls 1: 5.4 ~ 6 when n is 2.
3. one according to claim 1 supports angle steel, and it is characterized in that when n is 3, the width ratio of the first bending segment, the second bending segment and the 3rd bending segment controls 2: 7: 1 ~ 2.5: 9: 1.5.
4. one according to claim 2 supports angle steel, and it is characterized in that when n is 2, the width of described first bending segment is 7mm-9mm, and the width of the second bending segment is 38mm-48mm, and the thickness of supporting surface is 4mm-6mm.
5. according to claim 3 at one support angle steel, it is characterized in that when n is 3, the width of described first bending segment is 10mm-12mm, and the width of the second bending segment is 40mm-45mm, the width of the 3rd bending segment is 5mm-7mm, and the thickness of supporting surface is 5mm-6mm.
6. a steel tower half space, comprise and be arranged on platform framework on steel tower and support angle steel according to claim 1, the described link supporting angle steel body two ends that is positioned at is fixedly connected on platform framework, and the distance of bending side both ends distance platform framework is 5mm-15mm.
7. a kind of steel tower half space according to claim 6, is characterized in that when n is 2, and the width of supporting surface is 50mm-56mm, and adjacent two gaps supported between angle steel are 10mm-25mm.
8. a kind of steel tower half space according to claim 6, is characterized in that when n is 3, and the width of supporting surface is 58mm-63mm, and adjacent two gaps supported between angle steel are 15mm-30mm.
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| CN201410718453.8A CN104675176B (en) | 2014-11-28 | 2014-11-28 | A kind of support angle steel and steel tower half space |
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| CN201410718453.8A CN104675176B (en) | 2014-11-28 | 2014-11-28 | A kind of support angle steel and steel tower half space |
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| CN104675176A true CN104675176A (en) | 2015-06-03 |
| CN104675176B CN104675176B (en) | 2018-11-30 |
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