CN105041001B - Steel member ruggedized construction - Google Patents
Steel member ruggedized construction Download PDFInfo
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- CN105041001B CN105041001B CN201510502386.0A CN201510502386A CN105041001B CN 105041001 B CN105041001 B CN 105041001B CN 201510502386 A CN201510502386 A CN 201510502386A CN 105041001 B CN105041001 B CN 105041001B
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- reinforcing
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Abstract
The invention discloses a kind of steel member ruggedized construction, including steel member to be reinforced and reinforcing steel member, the reinforcing steel member is arranged on the steel member to be reinforced, beyond the steel member to be reinforced on described at least one direction for reinforcing steel member in both direction up and down.According to the steel member ruggedized construction of the present invention, rigidity is big, large carrying capacity, and difficulty of construction and workload are small, and reinforcement cost is low, applied widely.In addition, reinforcing process can be completed under conditions of steel member band to be reinforced load, the use influence on Architectural Equipment is small.
Description
Technical field
The present invention relates to building field, more particularly, to a kind of steel member ruggedized construction.
Background technology
In correlation technique, steel member reinforcement means can be divided into following four classes：(1) member section method, this method are increased
It can not use and be welded to connect for structure and light gauge cold-formed steel shape component that surrounding has combustible material, and use steel bonding method or patch
If carbon fiber board is reinforced, difficulty of construction is big and the cycle is long, when particularly large span roof component is reinforced in work high above the ground, difficulty of construction
Can further it increase with the cycle；(2) structure stress system method is changed, the scope of application of this reinforcement means is smaller；(3) apply pre-
Stress method, the method is higher to construction process requirement, and work high above the ground application prestressing force difficulty is also larger, is not suitable for ordinary construction
Reinforce；(4) light gauge cold-formed steel shape buckling and reinforcing method is prevented, due to that can not possibly add for existing structure component in component edge of a wing web
Rib, and be also impossible to plus dividing plate for the cold bending thin wall purlin provided with tie rod, while this reinforcement means is without clearly simple
Computational methods, therefore it is not suitable for Structural strengthening design.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention needs offer one
Kind of steel member ruggedized construction, the difficulty of construction of the steel member ruggedized construction is small, reinforcement cost is low.
A kind of steel member ruggedized construction according to embodiments of the present invention, including：Steel member to be reinforced；Reinforce steel member, institute
Reinforcing steel member is stated to be arranged on the steel member to be reinforced, it is described to reinforce steel member in both direction up and down extremely
Beyond the steel member to be reinforced on a few direction.
Steel member ruggedized construction according to embodiments of the present invention, rigidity is big, bearing capacity is strong, and difficulty of construction and workload
Small, reinforcement cost is low, applied widely.In addition, reinforcing process can be completed under conditions of steel member band to be reinforced load, to building
The influence used for building facility is small.
According to one embodiment of present invention, the steel member to be reinforced includes：Web to be reinforced；Top flange to be reinforced,
The top flange to be reinforced is connected to the upper edge of the web to be reinforced；Lower flange to be reinforced, the lower flange connection to be reinforced
In the lower edge of the web to be reinforced.Alternatively, the reinforcing steel member is steel plate, and the steel plate is waited to reinforce down installed in described
On the lower surface on the edge of a wing or on the upper surface of the top flange to be reinforced.
Further, the two ends of the steel plate wait to reinforce by two backing plates and screw bolt and nut installed in described respectively
On the lower surface of lower flange or on the upper surface of the top flange to be reinforced.
Preferably, the steel plate and the steel member to be reinforced are cold bending thin wall steel member, and the steel plate passes through self tapping
Screw is arranged on the lower surface of the lower flange to be reinforced or on the upper surface of the top flange to be reinforced.
Alternatively, the reinforcing steel member includes：Reinforce web；Top flange is reinforced, the reinforcing top flange is connected to institute
State reinforce web on along upper；Lower flange is reinforced, the reinforcing lower flange is connected in the lower edge of the reinforcing web, wherein,
The upper surface of the reinforcing top flange is arranged on the lower surface of the lower flange to be reinforced or under the reinforcing lower flange
On the upper surface for being surface mounted in the top flange to be reinforced.
Further, the two ends of the reinforcing top flange are arranged on described by two backing plates and screw bolt and nut respectively
On the lower surface of lower flange to be reinforced；Or the two ends of the reinforcing lower flange pass through two backing plates and screw bolt and nut respectively
On the upper surface of the top flange to be reinforced.
Preferably, the reinforcing steel member and steel member to be reinforced are cold bending thin wall steel member, the reinforcing top flange
On the lower surface that the lower flange to be reinforced is arranged on by self-tapping screw；Or the reinforcing lower flange is pacified by self-tapping screw
On the upper surface of the top flange to be reinforced.
Alternatively, the reinforcing steel member and the steel member to be reinforced are cold bending thin wall steel member, the reinforcing steel
Component includes：Reinforce web, the reinforcing web is arranged on lower flange to be reinforced described in being not provided with of the web to be reinforced
On side surface；Lower flange is reinforced, the reinforcing lower flange is connected in the lower edge of the reinforcing web.
Further, it is described reinforce web by self-tapping screw be arranged on the web to be reinforced be not provided with it is described to be added
Gu on the side surface of lower flange.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Fig. 1 is the front view of steel member ruggedized construction according to embodiments of the present invention；
Fig. 2 is the sectional view along the line A-A in Fig. 1；
Fig. 3 is the upward view of steel member ruggedized construction according to embodiments of the present invention；
Fig. 4 is the front view of steel member ruggedized construction according to embodiments of the present invention；
Fig. 5 is the sectional view along the line B-B in Fig. 4；
Fig. 6 is the sectional view along the line C-C in Fig. 4；
Fig. 7 is the front view of steel member ruggedized construction according to embodiments of the present invention；
Fig. 8 is the sectional view along the line D-D in Fig. 7；
Fig. 9 is the upward view of steel member ruggedized construction according to embodiments of the present invention.
Reference：
Steel member ruggedized construction 100,
Steel member 1 to be reinforced, web 10 to be reinforced, top flange 11 to be reinforced, lower flange 12 to be reinforced,
Steel member 2 is reinforced, web 20 is reinforced, top flange 21 is reinforced, lower flange 22 is reinforced,
Backing plate 3, bolt 4, self-tapping screw 5.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
Steel member ruggedized construction 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 9, the steel member is reinforced
Structure 100 can be applied in fields such as architectural engineerings, have the advantages that to be easy to construction, applied widely.
As shown in Fig. 1-Fig. 9, steel member ruggedized construction 100 according to embodiments of the present invention, including the He of steel member to be reinforced 1
Reinforce steel member 2.
Specifically, reinforce steel member 2 to be arranged on steel member 1 to be reinforced, reinforce steel member 2 at two up and down
Exceed steel member 1 to be reinforced at least one direction in direction, so, add the depth of section of steel member 1 to be reinforced with
Area of section, so as to improve the cross sectional moment of inertia and section modulus of steel member 1 to be reinforced, and then improves steel member to be reinforced
1 rigidity and bearing capacity.For example, as depicted in figs. 1 and 2, the lower section that steel member 2 is arranged on steel member 1 to be reinforced is reinforced, and
Exceed steel member 1 to be reinforced downwards.Or, the top of steel member 1 to be reinforced can also be arranged on and surpass upwards by reinforcing steel member 2
Go out steel member 1 to be reinforced.It is detachably connected it is understood that reinforcing steel member 2 and can be used with steel member 1 to be reinforced, from
And it is easy for installation.
Steel member ruggedized construction 100 according to embodiments of the present invention, steel member to be reinforced is arranged on using steel member 2 is reinforced
On 1 so that the rigidity of steel member ruggedized construction 100 is big, bearing capacity is strong.Can be with waiting to reinforce simultaneously as reinforcing steel member 2
Steel member 1 is detachably connected, so as to reduce difficulty of construction and workload, reduces reinforcement cost, and applied widely.This
Outside, reinforcing process can be completed under conditions of steel member 1 to be reinforced is with load, and the influence used to Architectural Equipment is small.
According to one embodiment of present invention, steel member 1 to be reinforced can include web 10 to be reinforced, top flange to be reinforced
11 and lower flange 12 to be reinforced.Wherein, top flange 11 to be reinforced is connected to the upper edge of web 10 to be reinforced, lower flange 12 to be reinforced
It is connected to the lower edge of web 10 to be reinforced, top flange 11 to be reinforced and lower flange 12 to be reinforced are towards the same of web 10 to be reinforced
Side extends.For example, as shown in Fig. 1-Fig. 2, Fig. 4-Fig. 5 and Fig. 7-Fig. 8, top flange 11 to be reinforced and the equal court in lower flange 12 to be reinforced
Extend to the front side of web 10 to be reinforced.Certainly, top flange 11 to be reinforced and lower flange 12 to be reinforced can also be towards to be added
Gu the rear side extension of web 10.
Alternatively, as shown in Figure 1-Figure 3, it can be steel plate to reinforce steel member 2, and steel plate may be mounted at lower flange to be reinforced
On 12 lower surface or on the upper surface of top flange to be reinforced 11.
For example, steel plate can be with horizontally extending on the lower surface of lower flange 12 to be reinforced.Further, steel plate
Two ends can pass through (not shown) following table installed in lower flange 12 to be reinforced of two backing plates 3 and bolt 4 and nut respectively
On face, so that the internal force that load is produced can be delivered to the left and right ends of steel member 1 to be reinforced respectively by bolt 4.Specifically,
As shown in figures 1 and 3, two backing plates 3 of left end are respectively provided on the lower surface of the upper surface of lower flange 12 to be reinforced and steel plate,
Two backing plates 3, lower flange to be reinforced 12 and the steel plate of left end are connected by two bolts 4, similarly, two backing plates 3 of right-hand member
On the lower surface for being respectively provided at the upper surface of lower flange 12 to be reinforced and steel plate, two backing plates 3 of right-hand member, lower flange to be reinforced 12
Connected with steel plate by two bolts 4.
For another example steel plate can be with horizontally extending on the upper surface of top flange 11 to be reinforced.Further, steel plate
Two ends can respectively by two backing plates 3 and bolt 4 and nut it is (not shown) be arranged on wait top flange 11 to be reinforced
On upper surface, so that the internal force that load is produced can be delivered to the left and right ends of steel member 1 to be reinforced respectively by bolt 4.
Certainly, the quantity not limited to this of bolt 4 and backing plate 3, can also be that multiple bolts 4 and multiple backing plates 3 pacify steel plate
On lower flange 12 to be reinforced.
Preferably, steel plate and steel member 1 to be reinforced can be cold bending thin wall steel member, and steel plate can pass through self-tapping screw
On the lower surface of lower flange 12 to be reinforced or on the upper surface of top flange to be reinforced 11, so that steel member ruggedized construction
100 reinforcing process is more convenient.
Alternatively, as Figure 4-Figure 6, reinforcing steel member 2 can include reinforcing web 20, reinforce top flange 21 and add again
Gu lower flange 22, reinforce top flange 21 be connected to reinforce web 20 on along upper, reinforce lower flange 22 and be connected to reinforcing web 20
Lower edge on, reinforce lower flange 22 and reinforce top flange 21 towards the same side (as shown in the drawings front side) for reinforcing web 20
Extension.Wherein, the upper surface for reinforcing top flange 21 is arranged on the lower surface of lower flange 12 to be reinforced, or reinforces lower flange 22
Lower surface is arranged on the upper surface of top flange 11 to be reinforced.
Further, the two ends (left and right ends as shown in the drawings) for reinforcing top flange 21 can be respectively by two pads
Plate 3 and bolt 4 and nut are (not shown) on the lower surface of lower flange 12 to be reinforced, so that the internal force that load is produced
The left and right ends of steel member 1 to be reinforced can be delivered to respectively by bolt 4.For example, as Figure 4-Figure 6, two of left end
Backing plate 3 is respectively provided at the upper surface of lower flange 12 to be reinforced and reinforced on the lower surface of top flange 21, two backing plates 3 of left end,
Lower flange 12 to be reinforced and reinforcing top flange 21 are connected by two bolts 4, and similarly, two backing plates 3 of right-hand member are respectively provided at
On the upper surface of lower flange 12 to be reinforced and the lower surface of reinforcing top flange 21, two backing plates 3 of right-hand member, lower flange to be reinforced 12
Connected with top flange 21 is reinforced by two bolts 4.
Certainly, the quantity not limited to this of bolt 4 and backing plate 3, can also be that multiple bolts 4 and multiple backing plates 3 pacify steel plate
On lower flange 12 to be reinforced.
Further, the two ends (left and right ends as shown in the drawings) for reinforcing lower flange 22 can be respectively by two pads
Plate 3 and bolt 4 and nut are (not shown) on the upper surface of top flange 11 to be reinforced, so that the internal force that load is produced
The left and right ends of steel member 1 to be reinforced can be delivered to respectively by bolt 4.
Certainly, the quantity not limited to this of bolt 4 and backing plate 3, can also be that multiple bolts 4 and multiple backing plates 3 pacify steel plate
On lower flange 12 to be reinforced.
Preferably, it can be cold bending thin wall steel member to reinforce steel member 2 and steel member 1 to be reinforced, and reinforcing top flange 21 can
To be arranged on by self-tapping screw on the lower surface of lower flange 12 to be reinforced, or reinforcing lower flange 22 is arranged on by self-tapping screw
On the upper surface of top flange 11 to be reinforced, so that the reinforcing process of steel member ruggedized construction 100 is more convenient.
Alternatively, as shown in figs. 7 to 9, it is cold bending thin wall steel member to reinforce steel member 2 and steel member 1 to be reinforced, plus
Gu steel member 2 includes reinforcing web 20 and reinforces lower flange 22.Wherein, reinforce web 20 and be arranged on not setting for web 10 to be reinforced
On the side surface for putting lower flange 12 to be reinforced, reinforce lower flange 22 and be connected in the lower edge of reinforcing web 20.For example, such as accompanying drawing institute
Show, the front side surface of web 10 to be reinforced is reinforced web 20 and installed provided with top flange 11 to be reinforced and lower flange 12 to be reinforced
On the rear side surface of web 10 to be reinforced, lower flange 22 is reinforced towards the rear side extension for reinforcing web 20.Certainly, bottom wing is reinforced
Edge 22 can also be towards the front side extension for reinforcing web 20.
Further, reinforce web 20 by self-tapping screw 5 be arranged on web 2010 to be reinforced be not provided with wait to reinforce down
On the side surface on the edge of a wing 12, so that the installation effectiveness for reinforcing steel member 2 is high, and reinforcement cost is low.Here, for self-tapping screw 5
Particular number do not do particular determination, for example, self-tapping screw 5 can be 22 as shown in drawings.Certainly, web 20 is reinforced also
It can be connected by fasteners such as bolts with web 10 to be reinforced.
The steel member ruggedized construction 100 of a specific embodiment according to the present invention is described in detail below with reference to Fig. 1-Fig. 3,
It is worth understanding, simply exemplary illustration described below, and is not considered as limiting the invention.
As shown in Figure 1-Figure 3, steel member processing structure according to embodiments of the present invention, including steel member to be reinforced 1 and add
Gu steel member 2.
Specifically, steel member 1 to be reinforced includes web 10 to be reinforced, top flange to be reinforced 11 and lower flange to be reinforced 12,
Top flange 11 to be reinforced is connected to the upper edge of web 10 to be reinforced, and lower flange 12 to be reinforced is connected under web 10 to be reinforced
Edge, top flange 11 to be reinforced and lower flange 12 to be reinforced extend towards the front side of web 10 to be reinforced.Reinforcing steel member 2 is steel
Plate, steel plate extends in left-right direction and the two ends of steel plate are pacified by the way that two backing plates 3 and bolt 4 and nut are (not shown) respectively
On the lower surface of lower flange 12 to be reinforced.
Steel member processing structure according to embodiments of the present invention, rigidity is big, and bearing capacity is strong, and reinforcement cost is low, reinforces
Process is simple and convenient.
The steel member ruggedized construction 100 of a specific embodiment according to the present invention is described in detail below with reference to Fig. 4-Fig. 6,
It is worth understanding, simply exemplary illustration described below, and is not considered as limiting the invention.
As Figure 4-Figure 6, steel member processing structure according to embodiments of the present invention, including steel member to be reinforced 1 and add
Gu steel member 2.
Specifically, steel member 1 to be reinforced includes web 10 to be reinforced, top flange to be reinforced 11 and lower flange to be reinforced 12,
Top flange 11 to be reinforced is connected to the upper edge of web 10 to be reinforced, and lower flange 12 to be reinforced is connected under web 10 to be reinforced
Edge, top flange 11 to be reinforced and lower flange 12 to be reinforced extend towards the front side of web 10 to be reinforced.Reinforcing steel member 2 includes
Reinforce web 20, reinforce top flange 21 and reinforce lower flange 22, reinforce top flange 21 be connected to reinforce web 20 on along upper, plus
Gu the upper surface of top flange 21 is arranged on the lower surface of lower flange 12 to be reinforced and its left and right ends passes through two backing plates 3 respectively
And bolt 4 and nut (not shown) are connected with lower flange 12 to be reinforced, reinforce lower flange 22 and be connected to reinforcing web 20
In lower edge, reinforce lower flange 22 and reinforce top flange 21 towards the front side extension for reinforcing web 20.
Steel member processing structure according to embodiments of the present invention, rigidity is big, and bearing capacity is strong, and reinforcement cost is low, reinforces
Process is simple and convenient.
The steel member ruggedized construction of another specific embodiment according to the present invention is described in detail below with reference to Fig. 7-Fig. 9
100, it is worth understanding, simply exemplary illustration described below, and be not considered as limiting the invention.
As shown in figs. 7 to 9, steel member processing structure according to embodiments of the present invention, including steel member to be reinforced 1 and add
Gu steel member 2.
Specifically, steel member 1 to be reinforced includes web 10 to be reinforced, top flange to be reinforced 11 and lower flange to be reinforced 12,
Top flange 11 to be reinforced is connected to the upper edge of web 10 to be reinforced, and lower flange 12 to be reinforced is connected under web 10 to be reinforced
Edge, top flange 11 to be reinforced and lower flange 12 to be reinforced extend towards the front side of web 10 to be reinforced.It is cold to reinforce steel member 2
Curved thin-walled steel member, including reinforce web 20 and reinforce lower flange 22, reinforcing web 20 is arranged on by 22 self-tapping screws 5 and treated
On the rear side surface for reinforcing web 10, reinforce lower flange 22 and be connected in the lower edge of reinforcing web 20, reinforce the direction of lower flange 22
Reinforce the rear side extension of web 20.
Steel member processing structure according to embodiments of the present invention, rigidity is big, and bearing capacity is strong, applied widely, reinforces steel
The installation effectiveness of component 2 is high and reinforcement cost is low.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " water
It is flat ", the orientation of the instruction such as " interior " or position relationship be, based on orientation shown in the drawings or position relationship, to be for only for ease of description
The present invention and simplified description, rather than indicate or imply that the device or element of meaning must be with specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.In the description of the invention, unless otherwise indicated, it is " many
It is individual " it is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of this specification, the description of reference term " one embodiment ", " some embodiments " etc. means to combine
The embodiment or example description specific features, structure, material or feature be contained in the present invention at least one embodiment or
In example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And
And, specific features, structure, material or the feature of description can be in any one or more embodiments or example with suitable
Mode combine.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (1)
1. a kind of steel member ruggedized construction, it is characterised in that including：
Steel member to be reinforced；
Reinforce steel member, the reinforcing steel member is arranged on the steel member to be reinforced, the reinforcing steel member upwards with
Beyond the steel member to be reinforced at least one direction in downward both direction,
The steel member to be reinforced includes：Web to be reinforced；Top flange to be reinforced, the top flange to be reinforced is connected to described treat
Reinforce the upper edge of web；Lower flange to be reinforced, the lower flange to be reinforced is connected to the lower edge of the web to be reinforced, described to treat
The same side extension of top flange and the lower flange to be reinforced towards the web to be reinforced is reinforced,
The steel member and the steel member to be reinforced reinforced is cold bending thin wall steel member, and the reinforcing steel member includes：Plus
Gu web, the reinforcing web is not provided with the side surface of the lower flange to be reinforced installed in the web to be reinforced；Plus
Gu lower flange, the reinforcing lower flange is connected in the lower edge of the reinforcing web,
It is described to reinforce the side for being not provided with the lower flange to be reinforced that web is arranged on the web to be reinforced by self-tapping screw
On surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502386.0A CN105041001B (en) | 2015-08-14 | 2015-08-14 | Steel member ruggedized construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502386.0A CN105041001B (en) | 2015-08-14 | 2015-08-14 | Steel member ruggedized construction |
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| Publication Number | Publication Date |
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| CN105041001A CN105041001A (en) | 2015-11-11 |
| CN105041001B true CN105041001B (en) | 2017-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510502386.0A Active CN105041001B (en) | 2015-08-14 | 2015-08-14 | Steel member ruggedized construction |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105926974A (en) * | 2016-01-13 | 2016-09-07 | 关喜才 | Steel structure composite beam capable of improving bearing capacity of existing steel beam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743626A (en) * | 2005-07-29 | 2006-03-08 | 武汉大学 | Method for reinforcing steel beam |
| CN101392600A (en) * | 2007-09-20 | 2009-03-25 | 贵阳铝镁设计研究院 | Trussed-beam steel beam reinforcing structure |
| JP2009215824A (en) * | 2008-03-12 | 2009-09-24 | Fujita Corp | Reinforcement construction of steel structure |
| KR20130103166A (en) * | 2012-03-09 | 2013-09-23 | 이창남 | Step-shaped wire fixing block for site fabrication and the wire tensioning method using thereof |
| CN204940905U (en) * | 2015-08-14 | 2016-01-06 | 北京清华同衡规划设计研究院有限公司 | Steel beam column ruggedized construction |
-
2015
- 2015-08-14 CN CN201510502386.0A patent/CN105041001B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743626A (en) * | 2005-07-29 | 2006-03-08 | 武汉大学 | Method for reinforcing steel beam |
| CN101392600A (en) * | 2007-09-20 | 2009-03-25 | 贵阳铝镁设计研究院 | Trussed-beam steel beam reinforcing structure |
| JP2009215824A (en) * | 2008-03-12 | 2009-09-24 | Fujita Corp | Reinforcement construction of steel structure |
| KR20130103166A (en) * | 2012-03-09 | 2013-09-23 | 이창남 | Step-shaped wire fixing block for site fabrication and the wire tensioning method using thereof |
| CN204940905U (en) * | 2015-08-14 | 2016-01-06 | 北京清华同衡规划设计研究院有限公司 | Steel beam column ruggedized construction |
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| CN105041001A (en) | 2015-11-11 |
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