CN206530053U - A kind of formwork support structure of hole to be provided top cover construction - Google Patents
A kind of formwork support structure of hole to be provided top cover construction Download PDFInfo
- Publication number
- CN206530053U CN206530053U CN201720217442.0U CN201720217442U CN206530053U CN 206530053 U CN206530053 U CN 206530053U CN 201720217442 U CN201720217442 U CN 201720217442U CN 206530053 U CN206530053 U CN 206530053U
- Authority
- CN
- China
- Prior art keywords
- hole
- support
- section steel
- top cover
- under
- 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.)
- Active
Links
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The utility model discloses a kind of formwork support structure of hole to be provided top cover construction, if the hole to be provided including dried layer, section steel beam is fixed at the opposite sides side of top hole to be provided hole, some equally distributed secondary beams are fixed between the section steel beam of both sides, secondary beam two ends are separately fixed on the section steel beam of both sides, support scaffolding is set up on the section steel beam of both sides, the base of the support scaffolding is respectively arranged on the section steel beam of both sides；Support beam is just to fixing some equally distributed plate lower secondary beams under support beam, two plates between support beam under two section steel beams, and two plates under two plates of setting at the top of support scaffolding, and the two ends of plate lower secondary beam are respectively arranged under two plates in support beam；Support beam under the plate, on plate lower secondary beam template is set.The utility model sets the problem of console mode support for shuttering has larger potential safety hazard to solve during hole to be provided top cover cast-in-place construction in the prior art, be embodied as cast-in-place provide of hole to be provided top cover and support while reducing the purpose of potential safety hazard.
Description
Technical field
The utility model is related to civil engineering field, and in particular to a kind of formwork support structure of hole to be provided top cover construction.
Background technology
In the civil engineering of large-scale synthesis body project, there is continuous dried layer to be big face if the intermediate layer of agent structure occurs
The situation of product hole to be provided, such as hole to be provided, the Zhongting hollow out hole to be provided of escalator etc., this usual area of part hole to be provided compared with
Greatly.In the prior art, the concrete top cover at the top of hole to be provided is when carrying out cast-in-place construction, and bottom formwork-support is only capable of according to normal
Rule mode, takes console mode support for shuttering, it will usually be height very high superelevation support body, sets up complicated, time-consuming, while by
It is too high in height, also there is larger potential safety hazard.
Utility model content
The purpose of this utility model is to provide a kind of formwork support structure of hole to be provided top cover construction, to solve existing skill
The problem of console mode support for shuttering has larger potential safety hazard is set in art during hole to be provided top cover cast-in-place construction, hole to be provided top is embodied as
Lid is cast-in-place to provide support while reducing the purpose of potential safety hazard.
The utility model is achieved through the following technical solutions：
A kind of formwork support structure of hole to be provided top cover construction, if including the hole to be provided of dried layer, in top hole to be provided hole
Set at mouth opposite sides side between fixed section steel beam, the section steel beam of both sides and fix some equally distributed secondary beams, secondary beam two
End is separately fixed on the section steel beam of both sides, and support scaffolding, the bottom of the support scaffolding are set up on the section steel beam of both sides
Seat is respectively arranged on the section steel beam of both sides；Support beam is set at the top of support scaffolding under support beam under two plates, two plates just
To fixing some equally distributed plate lower secondary beams, the two ends point of plate lower secondary beam between support beam under two section steel beams, and two plates
It is not arranged under two plates in support beam；Support beam under the plate, on plate lower secondary beam template is set.
When console mode support for shuttering is set during for hole to be provided top cover cast-in-place construction in the prior art, complicated, expense of taking a lot of work is set up
When, while the problem of also there is larger potential safety hazard, the utility model proposes a kind of shuttering supporting knot of hole to be provided top cover construction
Structure, if being set on the hole to be provided of top among the dried layer large area hole to be provided, is included in top hole to be provided hole relative
Two inner side edges fix section steel beam as the main beam structure of support, and section steel beam is fixed on the wall of hole to be provided side, that is, is able to ensure that shaped steel
Beam it is solid and reliable.Some secondary beams are connected between two section steel beams, secondary beam two ends are separately fixed on the section steel beam of both sides and some
Secondary beam is uniformly distributed.The hole to be provided hole of top is insulated by secondary beam so that the hole forms striated support knot
Structure, links together both sides section steel beam because secondary beam is fixedly connected with section steel beam, therefore by some secondary beams so that secondary
Beam, section steel beam turn into firm overall structure, improve the enabling capabilities of scaffold bottom.Support feet is set up on the section steel beam of both sides
Hand cradle, two wing bases of support scaffolding are respectively arranged on the section steel beam of both sides, in addition, other bottom terminations of support scaffolding
It can also be fixed on as needed on secondary beam so that connection is more firm.Support beam under two plates is set at the top of support scaffolding,
For supporting under cast-in-situ template, two plates, support beam is just to two section steel beams, to ensure that main load is located at identical vertical plane up and down
On, support beam carries out main support with section steel beam under plate.Some equally distributed plates are fixed under two plates between support beam
Lower secondary beam, the two ends of plate lower secondary beam are respectively arranged under two plates in support beam, are by two by some plate lower secondary beams
Support beam links into an integrated entity under plate, while the position for laying support is provided by plate lower secondary beam for the template on top, so that
Weight when template and its top joints cement is transferred to support beam under plate by plate lower secondary beam, then is transferred to type by scaffold
In girder steel, the concrete structure being passed to by section steel beam around hole to be provided, so that by mixed around top hole to be provided
Solidifying soil main body is supported to template, is supported without taking traditional approach to set up console mode support for shuttering from ground floor again,
The complexity and difficulties for setting up support frame are reduced, material usage is largely reduced with setting up duration, solves and set up
The problem of potential safety hazard caused by superelevation support frame, realize that to be that hole to be provided top cover is cast-in-place provide support while to reduce safety hidden
The purpose of trouble.
It is preferred that, the section steel beam is connected with hole to be provided side wall by Bar Anchorage.To ensure the shaped steel as main carrying
Secure and reliable connection between the concrete of beam and hole to be provided side wall.Reinforcing bar for anchoring is preset in concrete or by rearmounted
Mode is implanted into.
Further, some the first floor stringers parallel to section steel beam, described are additionally provided between the section steel beam of both sides
The two ends of one floor stringer are by Bar Anchorage in hole to be provided side wall.It is to help section steel beam to share load by the first floor stringer
Lotus so that whole load is evenly distributed, and section steel beam collectively forms parallel list structure with the first floor stringer, and secondary beam is matched somebody with somebody therewith again
The network structure for being formed and being intersected is closed, so that the supporting construction below scaffold has the characteristics of load is evenly distributed, it is to avoid
The situation of local pressure occurs.
Further, some the second floor stringers parallel to support beam under plate are additionally provided with two plates between support beam,
Second floor stringer is welded in plate lower secondary beam.It is to help support beam under plate to share load, the second auxiliary by the second floor stringer
Beam is welded in plate lower secondary beam, while support beam, plate lower secondary beam are collectively forming the network structure of intersection under the second floor stringer, plate,
So that the weight dispersed distribution that top template is applied, it is to avoid the excessive situation for causing quickly to be damaged of support beam local pressure under plate
Occur.
It is preferred that, the spacing between adjacent two secondary beams, adjacent two plate lower secondary beams, which is respectively less than, is equal to 2m.To increase support
The resistance to overturning of structure, prevents secondary beam, plate lower secondary beam are excessively sparse from causing the problem of stability deficiency influences security performance.
Further, section steel beam upper surface welded reinforcement head, the base of support scaffolding is set and the steel bar end phase
The jack matched somebody with somebody, support scaffolding is inserted in steel bar end.It is the reinforcing bar being inserted in the base of support scaffolding on section steel beam
It is that can just insert steel bar end because jack matches with steel bar end on head, can be obtained in horizontal direction after insertion steel bar end
With firm, support scaffolding rocking in the horizontal direction is prevented, it is ensured that have reliable positioning to connect between scaffold and section steel beam
Connect, it is to avoid slide displacement occurs when scaffold is shaken.
It is preferred that, the secondary beam is set two layers, is respectively welded at the upper and lower surface of section steel beam.Pass through double-deck secondary girder construction
Structural stability is improved, while so that section steel beam is protected between two layers of secondary beam by secondary beam to section steel beam, it is to avoid make
Directly collided with by external force damage etc. for the section steel beam of main load bearing component, so as to improve the bulk strength of this structure, stably
With service life.
It is preferred that, the section steel beam uses support beam under 25#b I-steel, plate to use 25#a I-steel.Section steel beam uses strong
The bigger 25#b I-steel of degree, it is ensured that there is intensity maximum in this structure as the section steel beam of main carrying.As directly supporting
Support beam under the plate of template load, its bearing requirements with not as section steel beam it is so high, but be also required to enough intensity, because
This selects 25#a I-steel, and the only load-carrying properties than section steel beam are slightly weak, so that it is guaranteed that stabilization and the carrying of total.
It is preferred that, the secondary beam, plate lower secondary beam are steel pipe.Secondary beam, plate lower secondary beam are auxiliary support member, after being mainly used in
Continuous piecemeal sets template to be provided when being poured and set for this platform.Therefore its intensity requirement is far below section steel beam and support beam under plate
Intensity requirement, it is therefore preferable that using steel pipe, can either be easy to be welded to connect the platform that template is built is provided, but light weight and drop
Low deadweight.
It is preferred that, uniform laying batten plate between any two adjacent first floor stringers.Operator station is easy to by batten plate
Stand on hole to be provided and constructed, while can also improve the globality between two adjacent first floor stringers.
The utility model compared with prior art, has the following advantages and advantages：
1st, a kind of formwork support structure of hole to be provided top cover construction, at top hole to be provided hole, two relative inner side edges are consolidated
Shape main beam structure of the girder steel as support, connect some secondary beams between two section steel beams, secondary beam two ends are separately fixed at both sides
On section steel beam and some secondary beams are uniformly distributed, the hole to be provided hole of top is insulated by secondary beam so that the hole shape
Both sides section steel beam, is connected to by supporting construction because secondary beam is fixedly connected with section steel beam, therefore by some secondary beams into strips
Together so that secondary beam, section steel beam turn into firm overall structure, the enabling capabilities of scaffold bottom are improved.
2nd, support scaffolding is set up on a kind of formwork support structure of hole to be provided top cover construction, both sides section steel beam, is supported
Two wing bases of scaffold are respectively arranged on the section steel beam of both sides, and support beam under two plates is set at the top of support scaffolding, is used for
Support beam under cast-in-situ template, two plates is supported just to two section steel beams, to be located at main load above and below ensuring on identical vertical plane, by
Support beam carries out main support with section steel beam under plate.Weight when obtaining template and its top joints cement is passed by plate lower secondary beam
Support beam under plate is handed to, then section steel beam is transferred to by scaffold, the concrete around hole to be provided is passed to by section steel beam
In structure, so as to be supported by the concrete main body around top hole to be provided to template, without taking traditional approach again
Console mode support for shuttering is set up from ground floor to be supported, and reduces the complexity and difficulties for setting up support frame, largely
Reduce material usage with set up duration, solve the problem of setting up the potential safety hazard caused by superelevation support frame, realize for
Hole to be provided top cover is cast-in-place to provide support while reducing the purpose of potential safety hazard.
3rd, a kind of formwork support structure of hole to be provided top cover construction, the base of support scaffolding is inserted on section steel beam
It is that can just insert steel bar end because jack matches with steel bar end on steel bar end, energy in horizontal direction after insertion steel bar end
Enough consolidated, prevent support scaffolding rocking in the horizontal direction, it is ensured that have reliable fixed between scaffold and section steel beam
Position connection, it is to avoid slide displacement occurs when scaffold is shaken.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the front view in the utility model specific embodiment；
Fig. 2 is the upward view in the utility model specific embodiment；
Fig. 3 is the top view in the utility model specific embodiment.
Mark and corresponding parts title in accompanying drawing：
1- section steel beams, 2- secondary beams, 3- support scaffoldings, 4- support beams, 5- plate lower secondary beams, 6- templates, the floor stringers of 7- first,
The floor stringers of 8- second, 9- steel bar ends, 10- batten plates.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment 1：
A kind of formwork support structure of hole to be provided top cover construction as shown in Figure 1 to Figure 3, if including the hole to be provided of dried layer,
Characterized in that, being set at the opposite sides side of top hole to be provided hole between fixed section steel beam 1, the section steel beam 1 of both sides
Fixed some equally distributed secondary beams 2, the two ends of secondary beam 2 are separately fixed on the section steel beam 1 of both sides, on the section steel beam 1 of both sides
Support scaffolding 3 is set up, the base of the support scaffolding 3 is respectively arranged on the section steel beam 1 of both sides；Support scaffolding 3 is pushed up
Support beam 4 is just to solid between support beam 4 under two section steel beams 1, and two plates under support beam 4 under two plates of portion's setting, two plates
Fixed some equally distributed plate lower secondary beams 5, the two ends of plate lower secondary beam 5 are respectively arranged under two plates in support beam 4；Under the plate
Template 6 is set on support beam 4, plate lower secondary beam 5.The section steel beam 1 is connected with hole to be provided side wall by Bar Anchorage.Both sides
Some the first floor stringers 7 parallel to section steel beam 1 are additionally provided between section steel beam 1, the two ends of first floor stringer 7 pass through
Bar Anchorage is in hole to be provided side wall.It is additionally provided with two plates between support beam 4 some parallel to the second auxiliary of support beam under plate 4
Beam 8 is helped, the second floor stringer 8 is welded in plate lower secondary beam 5.Spacing between adjacent two secondary beams 2, adjacent two plate lower secondary beams 5
Respectively less than it is equal to 2m.The upper surface welded reinforcement first 9 of section steel beam 1, the base of support scaffolding 3 is set and the phase of steel bar end 9
The jack matched somebody with somebody, support scaffolding 3 is inserted in steel bar end 9.The secondary beam 2 is set two layers, is respectively welded at section steel beam about 1
Surface.The section steel beam 1 uses support beam 4 under 25#b I-steel, plate to use 25#a I-steel.The secondary beam 2, plate lower secondary beam 5
For steel pipe.Uniform laying batten plate 10 between any two adjacent first floor stringers 7.This structure is relative at top hole to be provided hole
Two inner side edges fix section steel beam 1 and connect some secondary beams 2,2 liang of secondary beam as the main beam structure supported, between two section steel beams 1
End is separately fixed on both sides section steel beam 1 and some secondary beams are uniformly distributed, and is carried out the hole to be provided hole of top by secondary beam 2
Packing so that the hole forms strip supporting construction, because secondary beam 2 is fixedly connected with section steel beam 1, therefore passes through some secondary beams
Both sides section steel beam 1 is linked together so that secondary beam, section steel beam 1 turn into firm overall structure, improve the branch of scaffold bottom
Support ability.Support scaffolding 3 is set up on both sides section steel beam 1, two wing bases of support scaffolding 3 are respectively arranged at both sides shaped steel
On beam 1, the top of support scaffolding 3 sets support beam 4 under two plates, for supporting under cast-in-situ template 6, two plates support beam 4 just
To two section steel beams 1, to ensure that main load is located on identical vertical plane up and down, support beam 4 is carried out mainly with section steel beam 1 under plate
Support.Weight when obtaining template 6 and its top joints cement is transferred to support beam 4 under plate by plate lower secondary beam 5, then passes through pin
Hand cradle is transferred to section steel beam 1, in the concrete structure being passed to by section steel beam 1 around hole to be provided, so as to pass through top
Concrete main body around hole to be provided is supported to template 6, and console mode is set up without taking traditional approach again from ground floor
Support for shuttering is supported, and reduces the complexity and difficulties for setting up support frame, largely reduces material usage and erection
Duration, solves the problem of setting up the potential safety hazard caused by superelevation support frame, realizes and provides branch for hole to be provided top cover is cast-in-place
Support reduces the purpose of potential safety hazard simultaneously.The base of support scaffolding 3 is inserted on the steel bar end 9 on section steel beam 1, due to inserting
Hole matches with steel bar end 9, is that can just insert steel bar end 9, can be consolidated in horizontal direction after insertion steel bar end 9,
Prevent the rocking in the horizontal direction of support scaffolding 3, it is ensured that have between scaffold and section steel beam 1 and be reliably located by connecting, keep away
Exempt from occur slide displacement when scaffold is shaken.In addition, being additionally provided between both sides section steel beam 1 some parallel to section steel beam 1
First floor stringer 7, the two ends of first floor stringer 7 are by Bar Anchorage in hole to be provided side wall.Under two plates support beam 4 it
Between be additionally provided with some the second floor stringers 8 parallel to support beam under plate 4, the second floor stringer 8 is welded in plate lower secondary beam 5.I.e.
It is to help section steel beam 1 to share load by the first floor stringer 7 so that whole load is evenly distributed, the floor stringer of section steel beam 1 and first
7 collectively form parallel list structure, and secondary beam is matched again to form the network structure intersected, so that below scaffold
Supporting construction has the characteristics of load is evenly distributed, it is to avoid the situation of local pressure occurs.It is next that second floor stringer 8 is welded on plate
On beam 5, while support beam 4, plate lower secondary beam 5 are collectively forming the network structure of intersection under the second floor stringer 8, plate so that top mould
The weight dispersed distribution that plate 6 is applied, it is to avoid the local pressure of support beam 4 is excessive under plate causes situation about being quickly damaged to occur.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (10)
1. a kind of formwork support structure of hole to be provided top cover construction, if including the hole to be provided of dried layer, it is characterised in that in top
Set at the opposite sides side of hole to be provided hole between fixed section steel beam (1), the section steel beam (1) of both sides and fix some be uniformly distributed
Secondary beam (2), secondary beam (2) two ends are separately fixed on the section steel beam of both sides (1), and support is set up on the section steel beam (1) of both sides
Scaffold (3), the base of the support scaffolding (3) is respectively arranged on the section steel beam of both sides (1)；Support scaffolding (3) is pushed up
Portion sets support beam (4) under two plates, and support beam (4) is just to two section steel beams (1) under two plates, and support beam under two plates
(4) some equally distributed plate lower secondary beams (5) are fixed between, the two ends of plate lower secondary beam (5), which are respectively arranged under two plates, to be supported
On beam (4)；Support beam (4) under the plate, template (6) is set on plate lower secondary beam (5).
2. a kind of formwork support structure of hole to be provided top cover construction according to claim 1, it is characterised in that the shaped steel
Beam (1) is connected with hole to be provided side wall by Bar Anchorage.
3. a kind of formwork support structure of hole to be provided top cover construction according to claim 1, it is characterised in that the type of both sides
Some the first floor stringers (7) parallel to section steel beam (1), the two ends of first floor stringer (7) are additionally provided between girder steel (1)
By Bar Anchorage in hole to be provided side wall.
4. the formwork support structure of a kind of hole to be provided top cover construction according to claim 1, it is characterised in that under two plates
Some the second floor stringers (8) parallel to support beam under plate (4), the second floor stringer (8) welding are additionally provided between support beam (4)
In plate lower secondary beam (5).
5. the formwork support structure of a kind of hole to be provided top cover construction according to claim 1, it is characterised in that adjacent two
Spacing between secondary beam (2), adjacent two plate lower secondary beams (5), which is respectively less than, is equal to 2m.
6. a kind of formwork support structure of hole to be provided top cover construction according to claim 1, it is characterised in that section steel beam
(1) upper surface welded reinforcement head (9), the base of support scaffolding (3) sets the jack matched with the steel bar end (9), branch
Spike hand cradle (3) is inserted in steel bar end (9).
7. a kind of formwork support structure of hole to be provided top cover construction according to claim 1, it is characterised in that the secondary beam
(2) set two layers, be respectively welded at the upper and lower surface of section steel beam (1).
8. a kind of formwork support structure of hole to be provided top cover construction according to claim 1, it is characterised in that the shaped steel
Beam (1) uses support beam (4) under 25#b I-steel, plate to use 25#a I-steel.
9. a kind of formwork support structure of hole to be provided top cover construction according to claim 1, it is characterised in that the secondary beam
(2), plate lower secondary beam (5) is steel pipe.
10. a kind of formwork support structure of hole to be provided top cover construction according to claim 3, any two adjacent first auxiliary
Help uniform laying batten plate (10) between beam (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720217442.0U CN206530053U (en) | 2017-03-07 | 2017-03-07 | A kind of formwork support structure of hole to be provided top cover construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720217442.0U CN206530053U (en) | 2017-03-07 | 2017-03-07 | A kind of formwork support structure of hole to be provided top cover construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530053U true CN206530053U (en) | 2017-09-29 |
Family
ID=59918188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720217442.0U Active CN206530053U (en) | 2017-03-07 | 2017-03-07 | A kind of formwork support structure of hole to be provided top cover construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760500A (en) * | 2017-03-07 | 2017-05-31 | 中国五冶集团有限公司 | A kind of formwork support structure of hole to be provided top cover construction |
-
2017
- 2017-03-07 CN CN201720217442.0U patent/CN206530053U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760500A (en) * | 2017-03-07 | 2017-05-31 | 中国五冶集团有限公司 | A kind of formwork support structure of hole to be provided top cover construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103967277B (en) | Super High Core Walls Structure tilts the construction method of shear wall | |
| CN105298100B (en) | A kind of cylinder building cast-in-place flare structure of superelevation is encorbelmented the construction method of operation platform | |
| CN105971274A (en) | Cantilever support frame formwork system and construction method thereof | |
| CN109629810A (en) | Closed builder's jack system and construction method | |
| CN205012666U (en) | High altitude steel construction vestibule integrally lift up support structure | |
| AU2013212529A1 (en) | Automated formwork climbing system | |
| CN109235280A (en) | The operation platform and construction method of bridge coping | |
| CN106437123A (en) | Supporting leg automatic turnover type overall lifting elevator well operation platform | |
| CN206530053U (en) | A kind of formwork support structure of hole to be provided top cover construction | |
| CN106760500A (en) | A kind of formwork support structure of hole to be provided top cover construction | |
| CN104499706B (en) | Hoistway formwork platform and construction method thereof | |
| CN105971110A (en) | Construction method for fire control corridor steel structure supporting system | |
| CN213204915U (en) | Overweight overhanging suspended component supporting system of super high-rise residential conversion layer | |
| CN209194347U (en) | The operation platform of bridge coping | |
| CN105696782A (en) | Novel mobile operation platform | |
| CN206784919U (en) | One kind builds recessed corridor flange beam formwork platform | |
| CN215978618U (en) | Concrete pouring platform | |
| CN212270703U (en) | Bridge deck bearing combined support | |
| CN113006529A (en) | Back-jacking supporting structure and construction method thereof | |
| CN110512776B (en) | Construction method of assembled steel structure multi-cavity steel plate composite shear wall | |
| CN209066488U (en) | A kind of mass concrete invert reinforcing steel support system | |
| CN221193747U (en) | Connecting piece for reinforcing steel corridor cantilever frame | |
| CN207726560U (en) | A kind of interim attachment device of building hoist | |
| CN112854702A (en) | Large-span silo roof construction platform and erection method | |
| CN107558607B (en) | Tower crane system arranged on existing concrete structure and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |