CN106930531A - A kind of pull-up manomelia is encorbelmented the construction method of heavy frame - Google Patents
A kind of pull-up manomelia is encorbelmented the construction method of heavy frame Download PDFInfo
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- CN106930531A CN106930531A CN201710305684.XA CN201710305684A CN106930531A CN 106930531 A CN106930531 A CN 106930531A CN 201710305684 A CN201710305684 A CN 201710305684A CN 106930531 A CN106930531 A CN 106930531A
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- manomelia
- construction method
- pull
- encorbelmented
- heavy frame
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Encorbelmented the invention provides a kind of pull-up manomelia the construction method of heavy frame, comprising：Bolt hole is reserved when constructure body structure is in concreting, manomelia overhanging type steel is connected with constructure body structure using high-strength bolt, set up scaffold, hang up safety net, gaily decorated basket screw rod off-load, monitoring and maintenance during use are installed.Cause that heavy frame is mounted and dismounted using construction method of the invention more convenient, it is easy to construction, small is destroyed to building structure, building is not influenceed to build up the personnel at position or passing through for construction material transport, and there is provided a stress system for stabilization, improve stability, efficiency of construction and the safety coefficient of structure.
Description
Technical field
The present invention relates to technical field of buildings, and in particular to a kind of pull-up manomelia is encorbelmented the construction method of heavy frame.
Background technology
In building field, with the fast development of building trade, high-rise, high-rise building is more and more.Built existing
Build in construction, the heavy frame for carrying scaffold all coordinates to realize by Cantilever Beams and vertical rod.One end of Cantilever Beams is by anchor
Gu it is on flooring and deeply indoor long, therefore destruction is produced to structure, also have impact on follow-up construction.In addition, each vertical
A bar portion position piece cantilever steel girder of arrangement, particularly in stairs port and the rotation angle position of building, especially seems crisscross, shadow
Ring these personnel for having built up position of building or that construction material is transported is current, there is potential safety hazard, in installation and removal
Aspect is wasted time and energy, it is necessary to coordinated using tower crane, have impact on the efficiency and safety coefficient of construction.
The content of the invention
For the problem that prior art is present, encorbelmented it is an object of the invention to provide a kind of improved pull-up manomelia and held
The construction method of power frame, it is more convenient that the construction method causes that heavy frame is mounted and dismounted, and is easy to construction, and building structure is destroyed
It is small, do not influence building to build up the personnel at position or that construction material is transported is current, and receiving there is provided stabilization
Power system, improves stability, efficiency of construction and the safety coefficient of structure.
To achieve the above object, the encorbelment construction method of heavy frame of pull-up manomelia of the invention is comprised the following steps：
1. bolt hole is reserved when constructure body structure is in concreting；
2. manomelia overhanging type steel is connected with constructure body structure using high-strength bolt；
3. scaffold is set up；
4. safety net is hanged up；
5. gaily decorated basket screw rod off-load is installed；
6. monitoring and maintenance during use.
Further, after 1. step reserves bolt hole, it is embedded in reserved bolt hole using coating steel pipe.
Further, before 2. step is implemented, also comprising step a：Manomelia overhanging type steel and steel plate are welded, Yi Jibu
Rapid b：Bolt hole is made on steel plate.
Further, before 5. step is implemented, also comprising step c：Make gaily decorated basket screw rod.
Further, it is 2 bolts hole of making on steel plate in step b, bolt hole is slotted eye, 2 bolts hole
Center spacing is 110mm, and the bore edges of each bolt hole are apart from the bolt hole of the distance between side of steel plate at least
Size.
Further, gaily decorated basket screw rod includes 2 shanks of bolt, 3 reinforcing bars and 2 high-strength nuts, and 3 reinforcing bars are evenly distributed on
On the excircle of high-strength nut, 2 shanks of bolt coordinate with 2 high-strength nuts respectively.
Further, the two ends of gaily decorated basket screw rod are welded with otic placode respectively, and welding uses the welding side of positive and negative 4 groove weldings
Method.
Further, the inclination angle on gaily decorated basket screw rod and ground is in the range of 45 ° -65 °.
Further, high-strength bolt is tightened using double nut.
Further, construction method is applied to the special-shaped part of building.
Pull-up manomelia of the invention encorbelment heavy frame construction method it is simple, easy to operate, shorten construction period, there is provided
One triangular shaped stable stress system, meets the construction demand of structural stability, and exhausted big in heavy frame
Parts thereof can be removed in time after building structure is poured and finished, and repeated and utilized, and save material, reduce cost.
Brief description of the drawings
The present invention is made below in conjunction with the accompanying drawings further describe and illustrate.
Fig. 1 is that the pull-up manomelia for special-shaped part of first-selection implementation method of the invention is encorbelmented the schematic diagram of heavy frame.
Fig. 2 is that the encorbelment manomelia overhanging type steel inner end of heavy frame of pull-up manomelia is welded with the schematic diagram of steel plate in Fig. 1.
Fig. 3 is the left view of the manomelia overhanging type steel inner end in Fig. 2.
Fig. 4 is the schematic diagram that manomelia overhanging type steel inner end is fixed on constructure body structure.
Fig. 5 is the schematic diagram of gaily decorated basket screw rod.
Fig. 6 is the profile of the line A-A along Fig. 5.
Fig. 7 is the schematic diagram that the gaily decorated basket screw rod upper end in Fig. 5 is fixed in agent structure.
Fig. 8 is the schematic diagram that gaily decorated basket screw rod upper end in Fig. 5 is welded with otic placode.
Fig. 9 is the profile of the line B-B along Fig. 8.
Figure 10 is the schematic diagram that gaily decorated basket screw rod lower end in Fig. 5 is welded with otic placode.
Figure 11 is that the encorbelment manomelia overhanging type steel outer end of heavy frame of pull-up manomelia is welded with the signal of otic placode in Fig. 1
Figure.
Specific embodiment
As shown in figure 1, the pull-up manomelia of present invention first-selection implementation method is encorbelmented, heavy frame 100 is mainly encorbelmented comprising manomelia
Shaped steel 1, steel plate 2, gaily decorated basket screw rod 3 and high-strength bolt 4.Pull-up manomelia heavy frame 100 of encorbelmenting passes through multiple high-strength bolts 4 and fixes
To the agent structure 10 of building.
The pull-up manomelia of first-selection implementation method of the invention is encorbelmented the construction method of heavy frame, is comprised the following steps：
1. bolt hole is reserved when constructure body structure is in concreting；
2. manomelia overhanging type steel and steel plate are welded；
3. bolt hole is made on steel plate；
4. manomelia overhanging type steel is connected with agent structure using high-strength bolt；
5. scaffold is set up；
6. safety net is hanged up；
7. gaily decorated basket screw rod is made；
8. gaily decorated basket screw rod off-load is installed；
9. monitoring and maintenance during use.
Wherein step 2., 3., 7. in the component that is related to can in advance be got ready before construction, directly make in practice of construction
With that is,：Manomelia overhanging type steel and steel plate are welded before construction, and bolt hole is made on steel plate, by gaily decorated basket spiral shell before construction
Bar is made.
Below in conjunction with the accompanying drawings to above-mentioned construction method the step of, is described in detail.
Reserved bolt hole：
Before concreting, strictly audited by architectural working drawing and structural working drawing, using electronic composition
Mode reserve bolt hole.Multiple bolt holes 11 are reserved with agent structure 10, for coordinating with high-strength bolt 4.Bolt hole
11 should be more slightly bigger than the diameter of high-strength bolt 4, and holding of being reserved using the steel pipes of Φ 25 in formwork and tried one's best is with layer hole to be provided center
On a horizontal line.The coating steel pipe 12 of suitable diameter is embedded with bolt hole 11, template face is exposed at the two ends of coating steel pipe 12
It is no less than 50mm.After concrete placings are finished, coating steel pipe 12 can in time be removed, reused, therefore saved material, reduced
Cost.In addition, coating steel pipe antirust, erosion-resisting effect, it can ensure in whole construction period, and coating steel pipe will not be by
Rainwater etc. corrodes, to reach the purpose of recycling.
Manomelia overhanging type steel and steel plate are welded：
Specifically, as shown in Figure 1, 2, manomelia overhanging type steel 1 has inner end 1a and outer end 1b.Here, inner end 1a
Refer to the one end connected near agent structure 10 and agent structure 10, outer end 1b refers to away from agent structure 10 and inner end
1a relative one end.As shown in Figure 2,3, the inner end 1a of manomelia overhanging type steel 1 and steel plate 2 company of fixation by way of welding
Connect, outer end 1b is welded with otic placode 5.Ultrasonic testing is used to the inspection welded in the present invention.
Manomelia overhanging type steel 1 selects more than 16# I-steel, depth of section to be not less than 160mm.Steel plate 2 selects 12*200*
180 specifications.
Bolt hole is made on steel plate：
As shown in Figure 2,3,2 bolts hole 20 are provided with steel plate 2, bolt hole 20 is slotted eye, so, high-strength bolt 4
There is certain displacement in bolt hole 20, convenient construction personnel adjust the position of high-strength bolt 4.2 bolts hole 20 are located at together
On one horizontal line, the centre distance of holes is 110mm.The bore edges of each bolt hole 20 are between the side of steel plate 2
At least one size of bolt hole of distance, can so ensure that steel plate 2 has enough intensity.A spiral shell is provided with otic placode 5
Keyhole 50.The diameter of bolt hole 20,50 is essentially identical with the diameter in reserved bolt hole 11.
Manomelia overhanging type steel is connected with agent structure using high-strength bolt：
As shown in figure 4, manomelia overhanging type steel 1 is connected in agent structure 10 by 2 high-strength bolts 4.2 high-strength bolts
4 are each passed through the bolt hole 11 in 2 bolts hole 20 and agent structure 10 on steel plate 2, then are tightened with double nut 7, so that
Manomelia overhanging type steel 1 is fixed in agent structure 10.Here it is mutually locked using double nut, the effect of dual fail-safe is served,
Prevent high-strength bolt 4 from loosening.High-strength bolt 4 uses M20,8.8 grades of high-strength bolts, bolt exposed length to be no less than 10mm.
Set up scaffold, hang up safety net：
Pull-up manomelia encorbelments heavy frame 100 also comprising scaffold 6 and safety net.Overhanging scaffold erection step pitch 1.8m,
Vertical rod advance is not more than 1.5m, transfer 0.8m.Manomelia overhanging type steel 1 is set according to vertical rod advance, can in external corner and other positions
16# I-steel binding beam is laid on main Cantilever Beams uniformly to be laid to ensure vertical rod.Consider frame body safe and subsequent decorations
Lines easy construction determines in scaffold vertical rod away from main wall spacing (not being preferably greater than 300mm).The outside often walked in builder's jack is equal
If guardrail spacing 600mm high, i.e., often step sets twice.Railing and foot guard plate all should ride upon the inner side of outer vertical rod.Every section of builder's jack
By floor in outrigger every layer of shield of all setting up defences between vertical rod and main body, protection is isolated into：Horizontal cross bar Inner chooses plus one layer of level peace
The soft isolation (being located between interior vertical rod and wall) of the whole network.In shaped steel overhang layer and each intermediate floor chosen (i.e. three layer one sets)
Completely 12 thick red templates of paving do hard isolation closing, and remaining often walks laying steel basketry piece.Foot guard plate is located at shaped steel overhang layer and each chooses
Intermediate floor (i.e. three layer sets), the foot guard plate thick red template constructs of 12mm, 200mm high, the blue white paint of brush.Pacify in builder's jack outside
The whole network is totally-enclosed, and string bag bottom is chosen with white, and material selection green is dust-proof, noise isolating fire retardant safety net.When suspension scaffold cantilever beam is set up,
Must be provided with choosing net under operating surface.During using steel basketry scaffold board, vertical equity bar is fixed on transverse horizontal bar using right-angle coupler
On.When vertical rod transfer is less than or equal to 800mm, the vertical equity steel pipe for often walking snapping on transverse horizontal bar should not be less than 3；When
When vertical rod transfer is more than 800mm, the vertical equity steel pipe for often walking snapping on transverse horizontal bar is no less than 4.Outside suspension scaffold
Facade bridging should continuously be set from bottom to top, per pass bridging width be no less than 4 across and no more than 7 across, and be no less than
The inclination angle on 6m, brace and ground should be between 45 °~65 °.Wall-connecting piece uses two steps three across setting, using embedded steel tube on beam
Form.Steel pipe specifications and models should meet calculating and code requirement.
Make gaily decorated basket screw rod：
As shown in Figure 5,6, gaily decorated basket screw rod 3 includes 2 shanks of bolt, 31,3 reinforcing bars 32, and 2 high-strength nuts 33.3
Reinforcing bar 32 is evenly distributed on the excircle of high-strength nut 33, and 2 shanks of bolt 31 coordinate with 2 high-strength nuts 33 respectively, and
Stretch out from 2 high-strength nuts 33 respectively.Shank of bolt 31 uses A20 stay bolt bars, reinforcing bar 32 to use A14 reinforcing bars, high-strength spiral shell
Female 33 use M50 nuts.
Gaily decorated basket screw rod off-load is installed：
As illustrated in figures 7-11, two free ends of shank of bolt 31 of gaily decorated basket screw rod 3 are welded with otic placode 34,35 respectively, and
Positive and negative 4 groove weldings are used, this welding method has the advantage of uniform force.Bolt hole is formed respectively on otic placode 34,35
34a、35a.High-strength bolt 4 is placed through the bolt hole 34a on the otic placode 34 of the upper end of gaily decorated basket screw rod 3, and in agent structure 10
Bolt hole 11, then tightened using double nut 7, so as to the upper end of gaily decorated basket screw rod 3 is fixed in agent structure 10.High-strength bolt
4 are placed through the bolt hole 35a on the otic placode 35 of the lower end of gaily decorated basket screw rod 3, and positioned at the U of the outer end 1b of manomelia overhanging type steel 1
The upper bolt hole 50 of shape otic placode 5, then tightened using double nut 7, so as to the lower end of gaily decorated basket screw rod 3 be fixed with manomelia overhanging type steel 1
Connection.
As shown in figure 1, the upper and lower end of gaily decorated basket screw rod 3 is connected with agent structure 10 and manomelia overhanging type steel 1 respectively.The gaily decorated basket
In screw rod 3 and the in the vertical direction of manomelia overhanging type steel 1 are generally aligned in the same plane, that is, gaily decorated basket screw rod 3, the and of manomelia overhanging type steel 1
The three of agent structure 10 constitutes a triangle, thus formed stabilization by Force system, improve the stability of structure.
The inclination angle on the formation hypotenuse of gaily decorated basket screw rod 3, the hypotenuse and ground is in the range of 45 ° -65 °.
Monitoring and maintenance during use：
Encorbelmented after heavy frame sets up and finish in pull-up manomelia, organize management and the Party A's acceptance(check) can to throw by project management department
Enter to use, Inspection and maintenance often should be carried out to support body in use.Check points for attention：Under general state, it is allowed to have
Two operation layers are constructed simultaneously, and every layer of maximum construction loads is 3.0KN/m2.Support body must not overload and use, and must not use concentration lotus
Carry.Support body can only be used as crosshead, must not be used as formwork-support.Answer emphasis to check that overhang layer each node is connected, shaped steel with
Steel plate weld has free from flaw, and whether shaped steel loosens with agent structure junction bolt, and gaily decorated basket screw rod is connected with shaped steel and main body
Whether place's bolt loosens, and whether double nut lacks.Inspection and maintenance is formulated special messenger and is responsible for, and at least checks once weekly, is formed written
Process inspection record, pinpoints the problems and safeguard in time, rectification.
The encorbelment construction method of heavy frame of pull-up manomelia of the invention is mainly used in the special-shaped part of building, and this is different
Shape position is, for example, the rotation angle position of building, stairs port etc..The interior space of special-shaped part is limited, and workmen can pass through
The position.Traditional heavy frame, its shaped steel stretches into indoor more long, on the one hand to use shaped steel more long, on the other hand, destroys
The interior space, hamper workmen and pass through；And construction method of the invention by shaped steel without stretching into interior, it is only necessary to use manomelia
Shaped steel, manomelia shaped steel here eliminates 1.25 times of part of encorbelmenting for the shaped steel used in conventional art
The anchorage part of length, and manomelia shaped steel of the invention is fixed on constructure body structure by high-strength bolt and gaily decorated basket screw rod
On, therefore the destruction to building structure is reduced, the interior space is saved, and be easy to construct, improve efficiency of construction, meet
The requirement of the energy-conserving and environment-protective that country advocates.
In addition, construction method of the invention saves material compared with conventional construction method, the duration is shortened, and drop
Low cost.
Above-mentioned specific embodiment is only described to the preferred embodiment of the present invention, and not to guarantor of the invention
Shield scope is defined.On the premise of design concept of the present invention and scope is not departed from, one of ordinary skill in the art
According to word description provided by the present invention, accompanying drawing is to the various modifications done by technical scheme, replacement and improves,
Protection category of the invention all should be belonged to.Protection scope of the present invention is determined by claim.
Claims (10)
1. a kind of pull-up manomelia is encorbelmented the construction method of heavy frame, it is characterised in that comprised the following steps：
1. bolt hole is reserved when constructure body structure is in concreting；
2. manomelia overhanging type steel is connected with constructure body structure using high-strength bolt；
3. scaffold is set up；
4. safety net is hanged up；
5. gaily decorated basket screw rod off-load is installed；
6. monitoring and maintenance during use.
2. pull-up manomelia as claimed in claim 1 is encorbelmented the construction method of heavy frame, it is characterised in that in the step 1.
Behind reserved bolt hole, it is embedded in reserved bolt hole using coating steel pipe.
3. pull-up manomelia as claimed in claim 1 is encorbelmented the construction method of heavy frame, it is characterised in that in the step 2.
Before implementation, also comprising step a：Manomelia overhanging type steel and steel plate are welded, and step b：Bolt hole is made on steel plate.
4. pull-up manomelia as claimed in claim 1 is encorbelmented the construction method of heavy frame, it is characterised in that in the step 5.
Before implementation, also comprising step c：Make gaily decorated basket screw rod.
5. pull-up manomelia as claimed in claim 3 is encorbelmented the construction method of heavy frame, it is characterised in that the step b is
2 bolts hole are made on steel plate, the bolt hole is slotted eye, and 2 center spacing of bolt hole are 110mm, each spiral shell
The bore edges of keyhole are at least a size for bolt hole apart from the distance between side of steel plate.
6. pull-up manomelia as claimed in claim 4 is encorbelmented the construction method of heavy frame, it is characterised in that the gaily decorated basket screw rod
Comprising 2 shanks of bolt, 3 reinforcing bars and 2 high-strength nuts, 3 reinforcing bars are evenly distributed on the excircle of high-strength nut, 2 spiral shells
Tightening latch coordinates with 2 high-strength nuts respectively.
7. pull-up manomelia as claimed in claim 6 is encorbelmented the construction method of heavy frame, it is characterised in that the gaily decorated basket screw rod
Two ends respectively with otic placode weld, it is described welding using positive and negative 4 groove weldings welding method.
8. pull-up manomelia as claimed in claim 1 is encorbelmented the construction method of heavy frame, it is characterised in that the gaily decorated basket screw rod
With the inclination angle on ground in the range of 45 ° -65 °.
9. pull-up manomelia as claimed in claim 1 is encorbelmented the construction method of heavy frame, it is characterised in that the high-strength bolt
Tightened using double nut.
10. the pull-up manomelia as any one of claim 1-8 is encorbelmented the construction method of heavy frame, it is characterised in that
The construction method is applied to the special-shaped part of building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305684.XA CN106930531A (en) | 2017-05-03 | 2017-05-03 | A kind of pull-up manomelia is encorbelmented the construction method of heavy frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305684.XA CN106930531A (en) | 2017-05-03 | 2017-05-03 | A kind of pull-up manomelia is encorbelmented the construction method of heavy frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930531A true CN106930531A (en) | 2017-07-07 |
Family
ID=59429821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710305684.XA Pending CN106930531A (en) | 2017-05-03 | 2017-05-03 | A kind of pull-up manomelia is encorbelmented the construction method of heavy frame |
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| CN (1) | CN106930531A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331325A (en) * | 2018-02-08 | 2018-07-27 | 中国二十冶集团有限公司 | Builder's jack constructing device and method |
| CN109372239A (en) * | 2018-10-30 | 2019-02-22 | 中国建筑第四工程局有限公司 | A kind of basket type builder's jack |
| CN109555300A (en) * | 2018-12-27 | 2019-04-02 | 上海建工二建集团有限公司 | Overhanging scaffold |
| CN109853933A (en) * | 2018-12-19 | 2019-06-07 | 中国建筑第四工程局有限公司 | A kind of basket type builder's jack and its construction method |
| CN111764621A (en) * | 2020-07-09 | 2020-10-13 | 王进 | Overhanging scaffold and construction method |
| CN113916652A (en) * | 2021-08-31 | 2022-01-11 | 中国建筑第四工程局有限公司 | Test device and test method for detecting cantilever-bearing steel beam of scaffold |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201546435U (en) * | 2009-11-11 | 2010-08-11 | 龙信建设集团有限公司 | Bolted stayed cantilever scaffold |
-
2017
- 2017-05-03 CN CN201710305684.XA patent/CN106930531A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201546435U (en) * | 2009-11-11 | 2010-08-11 | 龙信建设集团有限公司 | Bolted stayed cantilever scaffold |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331325A (en) * | 2018-02-08 | 2018-07-27 | 中国二十冶集团有限公司 | Builder's jack constructing device and method |
| CN109372239A (en) * | 2018-10-30 | 2019-02-22 | 中国建筑第四工程局有限公司 | A kind of basket type builder's jack |
| CN109853933A (en) * | 2018-12-19 | 2019-06-07 | 中国建筑第四工程局有限公司 | A kind of basket type builder's jack and its construction method |
| CN109555300A (en) * | 2018-12-27 | 2019-04-02 | 上海建工二建集团有限公司 | Overhanging scaffold |
| CN111764621A (en) * | 2020-07-09 | 2020-10-13 | 王进 | Overhanging scaffold and construction method |
| CN113916652A (en) * | 2021-08-31 | 2022-01-11 | 中国建筑第四工程局有限公司 | Test device and test method for detecting cantilever-bearing steel beam of scaffold |
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| PB01 | Publication | ||
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Meng Lijuan Inventor after: Liu Jia Inventor after: Sui Hailong Inventor after: Yang Tao Inventor after: Sun Chune Inventor after: Sui Haitao Inventor after: Xia Jinxia Inventor after: Tian Xiao Inventor before: Sui Haitao Inventor before: Liu Jia Inventor before: Sui Hailong Inventor before: Yang Tao Inventor before: Sun Chune Inventor before: Meng Lijuan |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180111 Address after: 450003, Henan, Zhengzhou Jinshui District Garden Road West, agricultural road south 6, 1 units, 22, 2207 Applicant after: The Second Construction Company Of China Construction Second Engineering Bureau Address before: 210000 Jiangsu city of Nanjing Province along the Yangtze River Industrial Development Zone geguan Road No. 815 Applicant before: China Construction two Bureau Second Construction Engineering Co., Ltd. Huadong branch |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |