CN107013034A - A kind of form bracing system and construction method based on steel frame beam - Google Patents
A kind of form bracing system and construction method based on steel frame beam Download PDFInfo
- Publication number
- CN107013034A CN107013034A CN201710385129.2A CN201710385129A CN107013034A CN 107013034 A CN107013034 A CN 107013034A CN 201710385129 A CN201710385129 A CN 201710385129A CN 107013034 A CN107013034 A CN 107013034A
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- CN
- China
- Prior art keywords
- steel frame
- frame beam
- bracing system
- rack
- form bracing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
- E04G11/54—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a kind of form bracing system based on steel frame beam and construction method.The support system includes：Support meanss, a pair of spacing regulators and a pair of fasteners；Wherein, two spacing regulators and two fasteners are placed in support meanss, and, two fasteners are connected with two spacing regulators respectively, at least one in two spacing regulators is adjustably connected with support meanss position, for adjusting the distance between two fasteners；Two fasteners are additionally operable to be connected with structure steel frame beam, with clamp structure steel frame beam.In the present invention, shuttering supporting load is passed to by structure steel frame beam by support meanss, spacing regulator and fastener, it is to avoid set up substantial amounts of scaffold, saved measure material；Two fasteners are adjusted relative to the distance of support meanss by spacing regulator, the floor of different spans is can adapt to, substantially increases the convenience of construction, shorten construction period.
Description
Technical field
The present invention relates to civil engineering technical field, in particular to a kind of form bracing system based on steel frame beam
And construction method.
Background technology
Even if conventional template supporting erection is highly more than 5m high-altitudes shuttering supporting, part engineering scaffolding height generally reaches ten
Several meters or even tens meters.Current steel frame beam concrete floor high-altitude shuttering supporting is generally required sets up scaffold since ground,
Until setting up high empty template bottom, it is necessary to expend the scaffoldings such as substantial amounts of steel pipe, bamboo string piece scaffold board, and construct week
Phase is tediously long；Further, since amount of high-altitude operation is big, danger is high when workman constructs.As can be seen that according to substantial amounts of scaffold
It is used as the high-altitude shuttering supporting of steel frame beam concrete floor, human cost and material cost are higher, and greatly affected
Duration.
The content of the invention
In consideration of it, the present invention proposes a kind of form bracing system based on steel frame beam, it is intended to solve existing based on reinforcing bar
The problem of form bracing system of beam expends a large amount of measure materials and longer construction period.The invention also provides one kind is based on steel
The construction method of the form bracing system of bone beam.
On one side, the present invention proposes a kind of form bracing system based on steel frame beam, and the support system includes：Support
Device, a pair of spacing regulators and a pair of fasteners；Wherein, two spacing regulators and two fastening dresses
Put and be placed in the support meanss, also, two fasteners are connected with two spacing regulators respectively,
At least one in two spacing regulators is adjustably connected with the support meanss position, for adjusting two institutes
State the distance between fastener；Two fasteners are additionally operable to be connected with structure steel frame beam, to clamp the structure
Steel frame beam.
Further, in the above-mentioned form bracing system based on steel frame beam, the first rack is provided with the support meanss,
At least one in two spacing regulators is adjustably connected by first rack with the support meanss position
Connect；Be engaged with first rack first is provided with the adjustable spacing regulator in the support meanss position
Governor motion.
Further, in the above-mentioned form bracing system based on steel frame beam, first governor motion includes:First tooth
Wheel, head rod and the first knob；Wherein, the first gear be arranged in the head rod and with first rack
Engagement connection, first knob is connected with the head rod, for driving the head rod drive described the
One pinion rotation.
Further, in the above-mentioned form bracing system based on steel frame beam, the fastener includes：Fixed part and activity
Portion；Wherein, the fixed part is connected with the spacing regulator, the movable part and the fixed part position adjustably phase
Connection, and the passage of the clamping structure steel frame beam is formed between the fixed part and the movable part.
Further, in the above-mentioned form bracing system based on steel frame beam, the second rack, institute are provided with the fixed part
State the second governor motion for being provided with and being engaged with second rack on movable part.
Further, in the above-mentioned form bracing system based on steel frame beam, first rack is spur rack；And/or institute
The second rack is stated for spur rack.
Further, in the above-mentioned form bracing system based on steel frame beam, second governor motion includes：Second tooth
Wheel, the second connecting rod and the second knob；Wherein, the second gear be arranged in second connecting rod and with second rack
Engagement connection, second knob is connected with second connecting rod, for driving the second connecting rod drive described the
Two pinion rotations.
Further, in the above-mentioned form bracing system based on steel frame beam, the support meanss are H profile steel structure.
In the present invention, shuttering supporting load is passed to by structure by support meanss, spacing regulator and fastener
Steel frame beam, it is to avoid set up substantial amounts of scaffold, has saved measure material；Two fasteners are adjusted by spacing regulator
Relative to the distance of support meanss, the floor of different spans is can adapt to, the convenience of construction is substantially increased, construction is shortened
Cycle.On the other hand, the invention also provides a kind of construction method of the form bracing system based on steel frame beam, this method includes
Following steps：Two spacing adjusting devices are installed on support meanss by the form bracing system installation steps based on steel frame beam
Two ends, connect a fastener respectively on two spacing adjusting devices；Fastening steps, by the template based on steel frame beam
Support system is lifted to structure steel frame beam, and passes through the bottom wing of two fasteners clamping structure steel frame beam both sides
Edge；Template sets up step, is taken at the top of the structure steel frame beam being fastenedly connected with the form bracing system based on steel frame beam
If template.
Further, in the construction method of the above-mentioned form bracing system based on steel frame beam, in the fastening steps, pass through
The second governor motion on the first governor motion and the fastener on the spacing regulator is adjusted so that two described tight
It is fixedly mounted with the lower flange of structure steel frame beam described in the fixed part difference fastening clamp put.
Construction method in the present invention, it is simple to operate, safe and reliable and save a large amount of measure materials and cost of labor,
Substantially reduce the construction period；In addition, the support system in the construction method can be reused, meet wanting for green construction
Ask, economic benefit and social benefit are notable.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the structural representation of the form bracing system provided in an embodiment of the present invention based on steel frame beam；
Fig. 2 is the front view of the form bracing system provided in an embodiment of the present invention based on steel frame beam；
Fig. 3 is the left view of the form bracing system provided in an embodiment of the present invention based on steel frame beam；
Fig. 4 is the top view of the form bracing system provided in an embodiment of the present invention based on steel frame beam；
Fig. 5 is the cross-sectional view at 1-1 in Fig. 4；
Fig. 6 is the cross-sectional view at 2-2 in Fig. 4；
Fig. 7 is the flow chart of the construction method of the form bracing system provided in an embodiment of the present invention based on steel frame beam；
Fig. 8 is the scheme of installation of the form bracing system provided in an embodiment of the present invention based on steel frame beam；
Fig. 9 is the application schematic diagram of the form bracing system provided in an embodiment of the present invention based on steel frame beam.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Device embodiment：
Referring to Fig. 1 to Fig. 4, the excellent of the form bracing system provided in an embodiment of the present invention based on steel frame beam is shown in figure
Select structure.As illustrated, the support system includes：Support meanss 1, a pair of spacing regulators 2 and a pair of fasteners 3.
Wherein, two spacing regulators 2 and two fasteners 3 are placed in support meanss 1, also, two fastenings
Device 3 is connected with two spacing regulators 2 respectively, at least one in two spacing regulators 2 and support meanss 1
Put and be adjustably connected, for adjusting the distance between two fasteners 3, two fasteners 3 are additionally operable to and structure reinforcing bar
Beam is connected, with clamp structure steel frame beam.
Specifically, support meanss 1 can be H profile steel structure, to provide the bearing capacity of shuttering supporting.Spacing regulator 2
Can be in similar sliding block structure, two spacing regulators 2 can be arranged on the edge of a wing of H profile steel structure both sides, two
Fastener 3 can be fixedly connected with two spacing adjusting devices 2 respectively, for example, weld, and adjusted and filled in fastener 3 and spacing
Reinforcement can also be set by putting 2 junction, so that the two firm connection.Fastener 3 can be to be provided with appointing for interposed unit
Anticipate a kind of device, two fasteners 3 can distinguish the beam of clamp structure steel frame beam both sides.
Wherein, if a spacing regulator 2 can be moved relative to support meanss 1, another spacing adjusting device 2
Can be fixedly connected with support meanss 1 can also adjustably be connected with the position of support meanss 1, be filled with adjusting coupled fastening
Put 3 position so that two fasteners 3 can be adjusted flexibly the distance between they to adapt to the structure reinforcing bar of different size
Beam.
In the present embodiment, shuttering supporting load is passed to by support meanss 1, spacing regulator 2 and fastener 3
Structure steel frame beam, it is to avoid set up substantial amounts of scaffold, has saved measure material；Two are adjusted by spacing regulator 2 tightly
Be fixedly mounted with put 3 relative to support meanss 1 distance, can adapt to the floor of different spans, substantially increase the convenience of construction, contract
Short construction period, solves the form bracing system based on steel frame beam in the prior art and expends a large amount of measure materials and construction week
The problem of phase is longer.
Referring to Fig. 5, in above-described embodiment, it is provided with support meanss 1 in first rack 4, two spacing regulators 2
At least one is adjustably connected by the first rack 4 with the position of support meanss 1, is adjusted with the adjustable spacing in the position of support meanss 1
The first governor motion 5 being engaged with the first rack 4 is provided with engagement positions 2.
Specifically, support meanss 1 be H profile steel when, can the web of H profile steel first end (left end shown in Fig. 5)
Or second end (right-hand member shown in Fig. 5) or be respectively provided with the first rack 4 in the first end of web and the second end, in spacing adjustment
The inwall of device 2 is provided with can engage the first governor motion 5 that is connected and can be moved relative to the first rack 4 with the first rack 4,
First governor motion 5 can be any one device well-known to those skilled in the art.The length of first rack 4 can basis
Actual conditions are determined, and the present embodiment is not limited in any way to it.
As can be seen that the setting of the first rack 4 and the first governor motion 5, simple in construction, with low cost and easy to operate.
In above-described embodiment, the first governor motion 5 can include:First gear 51, the knob of head rod 52 and first
53.Wherein, first gear 51 is arranged in head rod 52 and is connected with the engagement of the first rack 4, and the first knob 53 and first connects
Extension bar 52 is connected, for driving head rod 52 to drive first gear 51 to rotate.Specifically, apply when to the first knob 53
During external force, the active force can be passed to head rod 52 by the first knob 53, and head rod 52 can drive first gear 51
Rotate, and then drive spacing regulator 2 to be moved along support meanss 1.It is such to set, it is simple in construction, easily operated, improve
Efficiency of construction.
In the various embodiments described above, fastener 3 can include：Fixed part 31 and movable part 32.Wherein, fixed part 31 and
Be connected away from adjusting apparatus 2, movable part 32 is adjustably connected with the position of fixed part 31, and fixed part 31 and movable part 32 it
Between formed clamp structure steel frame beam passage.
Specifically, through hole can be offered on movable part 32, fixed part 31 is connected by the through hole with movable part 32, Gu
Determine to be formed forceps type structure between portion 31 and movable part 32 with the lower flange of clamp structure steel frame beam, movable part 32 can basis
Structure reinforcing bar lower flange of girder listrium thickness, adjusts its displacement on fixed part 31, to realize fastener 3 and structure steel frame beam
It is fastenedly connected, it is ensured that the security reliability of whole system.
Referring to Fig. 6, in above-described embodiment, it is provided with the second rack 6, movable part 32 and is provided with and second on fixed part 31
The second governor motion 7 that rack 6 is engaged.Specifically, the side wall of fixed part 31 can set the second rack 6, movable part 32 with
The position that fixed part 31 is connected, which can be provided with, to engage the second governor motion 7 being connected with the second rack 6.Second regulation machine
Structure 7 can be any one device well-known to those skilled in the art.The length of second rack 6 can be entered according to actual conditions
Row determines that the present embodiment is not limited in any way to it
As can be seen that the setting of the second rack 6 and the second governor motion 7, simple in construction, with low cost and easy to operate,
Further increase the convenience of construction.
In the various embodiments described above, the first rack 4 is spur rack；And/or second rack 6 be spur rack.That is, first
The rack 6 of rack 4 and second can be in spur rack, or the first rack 4 and the second rack 6 one is spur rack, another
The individual other kinds of rack being well known to those skilled in the art.When it is implemented, rack can be selected according to actual conditions
Type, the present embodiment do not do any restriction to it.
In above-described embodiment, the second governor motion 7 can include：Second gear (not shown), the second connecting rod (figure
Not shown in) and the second knob 71；Wherein, second gear is arranged in the second connecting rod and is connected with the engagement of the second rack 6, second
Knob 71 is connected with the second connecting rod, for driving the second connecting rod to drive second gear to rotate.Specifically, revolved when to second
When button 71 applies external force, the active force can be passed to the second connecting rod by the second knob 71, and the second connecting rod can drive the second tooth
Wheel is rotated, and then drives movable part 32 to be moved along fixed part 31.
As can be seen that the second knob 71 can be tuned according to structure reinforcing bar lower flange of girder listrium thickness, to adapt to different size
Steel frame beam, and further increase efficiency of construction.
To sum up, the support system in the present embodiment by support meanss, spacing regulator and fastener by template branch
Support load passes to structure steel frame beam, it is to avoid sets up substantial amounts of scaffold, has saved measure material；Pass through spacing regulator
Two fasteners are adjusted relative to the distance of support meanss, the floor of different spans is can adapt to, substantially increases construction
Convenience, shortens construction period；In addition, the support system can be reused, meet the requirement of green construction, economic benefit
It is notable with social benefit.
Embodiment of the method:
Referring to Fig. 7-Fig. 9, Fig. 7 is the construction method of the form bracing system provided in an embodiment of the present invention based on steel frame beam
Flow chart.As shown in fig. 7, this method comprises the following steps：
Two spacing adjusting devices are installed on support meanss by the form bracing system installation steps S1 based on steel frame beam
Two ends, a pair of fasteners are connected on two spacing adjusting devices respectively.
Specifically, can also be to the position of high-altitude formwork erection before the form bracing system installation steps based on steel frame beam
Measure, and the support system quantity for determining to need by Force Calculation, you can be selected at least according to upper mould load
One form bracing system based on steel frame beam, and support system quantity can be increased and decreased as the case may be, to meet bearing capacity need
Ask.When form bracing system based on steel frame beam is installed, two spacing adjusting devices first can be installed on the two of support meanss
End, connects a fastener respectively on two spacing adjusting devices.
Fastening steps S2, the form bracing system based on steel frame beam is lifted to structure steel frame beam, and pass through two
The lower flange of fastener clamp structure steel frame beam both sides.
Specifically, can be by adjusting second on the first governor motion 5 and fastener 3 on spacing adjusting device 2
Governor motion 7 causes the fixed part 31 of two fasteners 3 to distinguish the lower flange of fastening clamp structure steel frame beam.
When it is implemented, the form bracing system based on steel frame beam is lifted to structure steel frame beam by crane gear
Before, the second knob 71 of the second governor motion 7 can be rotated, the fixed part 31 of fastener 3 is separated with movable part 32, makes
Obtain plate thickness of the bore more than structure reinforcing bar lower flange of girder edge of fixed part 31 and the clamp passage of the formation of movable part 32.When by base
After the form bracing system of steel frame beam is lifted to structure steel frame beam, the clamp of the fastener 3 at the end of support meanss 1 second
Mouth stretches into structure reinforcing bar lower flange of girder edge, and the first knob 53 of the first governor motion of first end 5 of rotating supporting device 1 fills support
The pincers type mouth for putting the fastener 3 of 1 first end also stretches into counter structure steel frame beam lower flange, until the fixed part 31 at two ends and knot
Structure reinforcing bar flange of beam is in close contact, while rotating the second knob 71 on two ends fastener 3, makes fixed component 31 and movable part
The pincers type mouth closure of 32 compositions, until stinging locking structure reinforcing bar flange of beam.
Template sets up step S3, at the top for the structure steel frame beam being fastenedly connected with the form bracing system based on steel frame beam
Set up template.
Specifically, behind the lower flange of the form bracing system fastening structure steel frame beam both sides based on steel frame beam, you can take
If high empty template, the form of construction work for setting up high empty template is well known to those skilled in the art, here is omitted.
Construction method in the present embodiment, it is simple to operate, safe and reliable and save a large amount of measure materials and it is artificial into
This, substantially reduces the construction period；In addition, the support system in the construction method can be reused, meet green construction
It is required that, economic benefit and social benefit are notable.In summary, the construction method in the present embodiment, it is simple to operate, safe and reliable simultaneously
And a large amount of measure materials and cost of labor are saved, shorten the construction period.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of form bracing system based on steel frame beam, it is characterised in that including：Support meanss (1), a pair of spacing adjustment dresses
Put (2) and a pair of fasteners (3)；Wherein,
Two spacing regulators (2) and two fasteners (3) are placed in the support meanss (1), also,
Two fasteners (3) are connected with two spacing regulators (2) respectively, two spacing regulators
(2) at least one in is adjustably connected with the support meanss (1) position, for adjusting two fasteners (3)
The distance between；
Two fasteners (3) are additionally operable to be connected with structure steel frame beam, to clamp the structure steel frame beam.
2. the form bracing system according to claim 1 based on steel frame beam, it is characterised in that
At least one being provided with the support meanss (1) in the first rack (4), two spacing regulators (2) is led to
First rack (4) is crossed with the support meanss (1) position to be adjustably connected；
With being provided with and the first rack (4) phase on the adjustable spacing regulator (2) in the support meanss (1) position
The first governor motion (5) coordinated.
3. the form bracing system according to claim 2 based on steel frame beam, it is characterised in that first governor motion
(5) include:First gear (51), head rod (52) and the first knob (53)；Wherein,
The first gear (51) is arranged in the head rod (52) and is connected with first rack (4) engagement, described
First knob (51) is connected with the head rod (52), for driving the head rod (52) to drive described first
Gear (51) is rotated.
4. the form bracing system based on steel frame beam according to any one of claim 1-3, it is characterised in that described tight
It is fixedly mounted with and puts (3) and include：Fixed part (31) and movable part (32)；Wherein,
The fixed part (31) is connected with the spacing regulator (2), the movable part (32) and the fixed part (31)
Position is adjustably connected, and the clamping structure steel frame beam is formed between the fixed part (31) and the movable part (32)
Passage.
5. the form bracing system according to claim 4 based on steel frame beam, it is characterised in that on the fixed part (31)
It is provided with the second rack (6), the movable part (32) and is provided with the second governor motion being engaged with second rack (6)
(7)。
6. the form bracing system according to claim 5 based on steel frame beam, it is characterised in that
First rack (4) is spur rack；And/or
Second rack (6) is spur rack.
7. the form bracing system according to claim 6 based on steel frame beam, it is characterised in that second governor motion
(7) include：Second gear, the second connecting rod and the second knob (71)；Wherein,
The second gear is arranged in second connecting rod and is connected with second rack (6) engagement, second knob
(71) it is connected with second connecting rod, for driving second connecting rod to drive the second gear to rotate.
8. the form bracing system based on steel frame beam according to any one of claim 1-3, it is characterised in that the branch
Support arrangement (1) is H profile steel structure.
9. a kind of construction method of form bracing system based on steel frame beam as any one of claim 1 to 8, it is special
Levy and be, comprise the following steps：
Form bracing system installation steps based on steel frame beam, two spacing adjusting devices are installed on the two ends of support meanss,
Connect a fastener respectively on two spacing adjusting devices；
Fastening steps, the form bracing system based on steel frame beam is lifted to structure steel frame beam, and tight by two
It is fixedly mounted with the lower flange put and clamp the structure steel frame beam both sides；
Template sets up step, is taken at the top of the structure steel frame beam being fastenedly connected with the form bracing system based on steel frame beam
If template.
10. the construction method of the form bracing system according to claim 9 based on steel frame beam, it is characterised in that
In the fastening steps, by adjusting the first governor motion (5) and the fastening dress on the spacing regulator (2)
The second governor motion (7) on (3) is put to tie described in fixed part (31) the difference fastening clamp of two fasteners (3)
The lower flange of structure steel frame beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385129.2A CN107013034B (en) | 2017-05-26 | 2017-05-26 | A kind of form bracing system and construction method based on steel frame beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385129.2A CN107013034B (en) | 2017-05-26 | 2017-05-26 | A kind of form bracing system and construction method based on steel frame beam |
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| Publication Number | Publication Date |
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| CN107013034A true CN107013034A (en) | 2017-08-04 |
| CN107013034B CN107013034B (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710385129.2A Active CN107013034B (en) | 2017-05-26 | 2017-05-26 | A kind of form bracing system and construction method based on steel frame beam |
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Cited By (2)
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| CN113216622A (en) * | 2021-05-26 | 2021-08-06 | 蔡朝晖 | Formwork support system based on steel reinforced beam and construction method |
| CN113530218A (en) * | 2021-07-05 | 2021-10-22 | 李新华 | Floor slab framework, floor slab and manufacturing method thereof |
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| CN113530218A (en) * | 2021-07-05 | 2021-10-22 | 李新华 | Floor slab framework, floor slab and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013034B (en) | 2019-03-12 |
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