CN104389419A - Cantilevered formwork platform installation structure and construction method - Google Patents
Cantilevered formwork platform installation structure and construction method Download PDFInfo
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- CN104389419A CN104389419A CN201410652884.9A CN201410652884A CN104389419A CN 104389419 A CN104389419 A CN 104389419A CN 201410652884 A CN201410652884 A CN 201410652884A CN 104389419 A CN104389419 A CN 104389419A
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Abstract
The invention relates to a cantilevered formwork platform installation structure and a construction method. One end of a cantilever section steel is fixed on a supporting steel casing at a beam-column node, and a plurality of inclined supporting rods are arranged between the bottom of the cantilever section steel and a framework column; stay cables are arranged on the top of the cantilever section steel, and the other ends of the stay cables are connected with an anchoring steel plate; a beam-column supporting rod is arranged between a beam and the column, a horizontal supporting framework and a platform plate are arranged on the top of the cantilever section steel, and a scaffold system is put up on the platform plate. The cantilevered formwork platform is integrated with supporting and pulling, the force transfer system is clear, permanent members of a building are sufficiently utilized, and high economic benefit can be brought.
Description
Technical field
The present invention relates to one to encorbelment formwork structure for mounting platform.Belong to Structural Engineering field, be applicable to executive information systems scaffold construction platform and set up engineering.
Background technology
In recent years along with the fast development of China's economy, the quickening of urbanization process, we are faced with the pressure of the urban population day by day expanded, and in order to alleviate the crowded of urban space, the development of urban space of three-dimensional becomes a kind of trend gradually.Along with the development of this burst of trend and Building technology, increasing high-rise and super highrise building towers in city.
For urban skyscraper, traditional pin hand cradle, the method for the steel pipe scaffold namely upwards set up from ground shown set up take a lot of work, the construction period is long, unsafe drawback of constructing, therefore, the overhanging scaffold for middle-high building arises at the historic moment.
Such as the shaped steel suspension scaffolding generally arranges overhanging component and by a kind of scaffold of overhanging component upper load from building storey.It has not by the advantage that building height affects.The key of overhanging scaffold is that intensity, rigidity and stability must meet related request, and has reliable connection with building structure, the load of scaffold can be passed to building structure safely.Builder's jack can be divided into cantilevered, cable-stayed type and strut-framed by the structural form according to cantilevered structure.Cantilevered for only with shaped steel as choosing outside Cantilever Beams; Cable-stayed type is that the overhanging component stretched out in building structure carries out oblique pull by rod member, in the beam that the oblique pull rod member other end is fixed on last layer or post; Strut-framed adds brace to support in overhanging component bottom.In Practical Project, above three class cantilevered structures are all widely used, but from stressed and use and respectively have feature: the supporting capacity of overhanging type and inclined pull type suspension supporting scaffold is mainly controlled by overhanging component, and the Compression Stability of lower supporting rod is the key of strut-framed builder's jack supporting capacity.The shaped steel suspension scaffolding is also a kind of cantilevered structure that present engineering is often used.It is worth mentioning that the application of constructor for overhanging component is often by experience in the past, for the concrete stress performance of overhanging component, the selection of component etc. the concept that all neither one is clear and definite, and neither be a lot of to the regulation of overhanging component in specification.So existing builder's jack platform all to there is structure power transmission indefinite, bonding strength is not high, the defect that safety is lower.
Given this, urgently invent a kind of force transfer system clear and definite, make full use of building permanent part and connect reliable, the higher builder's jack operation platform with good technical economic benefit of safety.
Summary of the invention
The object of the invention is to connect from improving overhanging type steel, fix and supporting way, provide a kind of force transfer system clear and definite, structural integrity is good, uniform force, bonding strength are high, encorbelment formwork structure for mounting platform and the construction method thereof of easy construction.
Encorbelment formwork structure for mounting platform, pre-buried intercolumniation steel pile casting on the frame column between frame column and the Nodes pre-buried supporting steel casing of Vierendeel girder, two nodes, the cross section of supporting steel casing, intercolumniation steel pile casting is slightly less than Vierendeel girder and frame column.
One end and the supporting steel casing of overhanging type steel are fixed through connecting bolt; Bottom overhanging type steel and between frame column, knighthead is set; Arrange suspension cable above overhanging type steel, suspension cable is connected with the anchor plate of opposite side through after the preformed hole on top frame post;
Arrange counterweight watering on floor, the other end of suspension cable is connected with counterweight;
Described knighthead quantity is two, is respectively to be arranged on bottom overhanging type steel near the support long diagonal brace of end and the short brace of support being arranged on close middle part bottom overhanging type steel; The other end supporting short brace is connected with intercolumniation steel pile casting; Supporting the other end of long diagonal brace is fixed on the spacing steel plate that the pre-buried supporting steel casing in bean column node place below arranges outward;
Between beam column, arrange beam column support bar, one end is connected with inside intercolumniation steel pile casting, and one end is connected with the steel plate be embedded on Vierendeel girder;
Beam column support bar, support long diagonal brace, support short brace, the connecting end portion of overhanging type steel is provided with end plate;
Set up horizontal support skeleton and landing slab on overhanging type steel top, landing slab 14 sets up scaffold system.
To encorbelment the construction method of formwork structure for mounting platform, comprise the following steps:
Step one: make built-in fitting, makes supporting steel casing and intercolumniation steel pile casting according to designing requirement, by supporting steel casing and connecting bolt welding, spacing steel plate and floor are welded with supporting steel casing, and floor is between spacing steel plate and supporting steel casing.
Step 2: make supporting rod and overhanging type steel, at overhanging type steel, the welding edges end plate that supports long diagonal brace, support short brace and beam column support bar, and on end plate prepared screw-bolt hole.
Step 3: frame construction is built, pouring frame structure, is fixed on design attitude by the built-in fitting that step one is made simultaneously, and arranges preformed hole above frame column.
Step 4: overhanging type steel is installed, and overhanging type steel is lifted to Nodes, fixes the end plate of overhanging type steel and supporting steel casing and weld with connecting bolt.
Step 5: supporting rod is installed, and arranges and supports long diagonal brace, supports short brace bottom overhanging type steel and between frame column, the other end supporting long diagonal brace is connected to spacing steel plate, and the other end supporting short brace is connected to intercolumniation steel pile casting.
Step 6: suspension cable is installed, and overhanging type steel arranges suspension cable, suspension cable is fixed on anchor plate through the preformed hole on frame column.When working load is larger, counterweight is set watering on the floor built, the other end of suspension cable is connected to counterweight.
Step 7: arrange beam column support bar, arranges beam column support bar inside frame construction, and top and the intercolumniation steel pile casting of beam column support bar are fixed, bottom and the Interal fixation be arranged on Vierendeel girder.
Step 8: scaffold system is set up, when after overhanging type steel installation, be arranged in parallel horizontal support skeleton above overhanging type steel, and lay landing slab above horizontal support skeleton, and set up scaffold system on landing slab.
7 one step bolt the present invention have following feature and beneficial effect:
(1) overhanging type steel adopts the solid-Zhi-La combination connecting mode hanging with supporting steel casing bolt-weld joint, suspension cable and draw with they sup-port, can effectively must transfer the load on building frame, connects reliable.
(2) supporting steel casing is embedded in bean column node place, as the link of overhanging type steel, can play reinforcement effect again to bean column node.
(3) adopt anchor plate or interim counterweight with fixing suspension cable according to the size of working load, effectively can draw ability according to hanging of suspension cable of working load adjustment, the formwork working platform that makes to encorbelment is more reliable.
(4) beam column support bar is set in frame construction, the intensity of effective reinforced frame structure, avoids that working load is excessive causes damage to frame construction.
Accompanying drawing explanation
Fig. 1 is that the present invention encorbelments formwork platform structure schematic diagram;
Fig. 2 is supporting steel casing structure schematic diagram;
Fig. 3 is overhanging type steel junction supporting steel casing connection diagram;
Fig. 4 supports long diagonal brace junction supporting steel to protect connection diagram;
Fig. 5 is intercolumniation steel pile casting connection diagram.
Accompanying drawing illustrates: 1, frame column; 2, Vierendeel girder; 3, overhanging type steel; 4, supporting steel casing; 5, long diagonal brace is supported; 6, short brace is supported; 7, spacing steel plate; 8, beam column support bar; 9, suspension cable; 10, preformed hole; 11, anchor plate; 12, counterweight; 13, horizontal support skeleton; 14, landing slab; 15, scaffold system; 16,20, connecting bolt; 17,19 end plates; 18, intercolumniation steel pile casting; 21, floor.
Detailed description of the invention
The welding procedure technical requirements of steel plate, high-strength bolt, is not repeated in the present embodiment such as frame construction concrete and the pre-buried design and construction requirement of steel beam column, specifically sets forth embodiments of the present invention.
Fig. 1 is that the present invention encorbelments formwork platform structure schematic diagram, and Fig. 2 is supporting steel casing structure schematic diagram, and Fig. 3 is overhanging type steel junction supporting steel casing connection diagram, and Fig. 4 supports long diagonal brace junction supporting steel to protect connection diagram.Fig. 5 is middle steel pile casting connection diagram.
With reference to shown in Fig. 1 ~ 5, formwork platform structure of encorbelmenting, pre-buried intercolumniation steel pile casting 18 on the frame column 1 between frame column 1 and Nodes pre-buried supporting steel casing 4, two nodes of Vierendeel girder 2.Frame column 1 sectional dimension is 1000 × 1000mm
2, Vierendeel girder 2 sectional dimension is 1000 × 800mm
2.Supporting steel casing 4, intercolumniation steel pile casting 18 are made by Q345 hot-rolled steel section, and thickness is 10mm, and sectional dimension is divided and is all slightly less than corresponding Vierendeel girder 2 and frame column 1, pre-buried in frame construction time, surface is sunk in Vierendeel girder, post slightly.Connecting bolt 16 is embedded in bean column node place and stretches out supporting steel casing 4 and reinforcement of weld together with supporting steel casing 4, one end of overhanging type steel 3 and supporting steel casing 4 are fixed through connecting bolt 6, overhanging type steel adopts 22#a i iron, and connecting bolt 16 adopts M20 high-strength bolt.
Arrange support long diagonal brace 5 respectively near the position at end and middle part and support short brace 6 bottom overhanging type steel 3, both all adopt 12# i iron, and the length supporting long diagonal brace 5 is 4.24m, and the length supporting short brace 6 is 2.2m; The other end supporting short brace 6 is connected with intercolumniation steel pile casting 18, and intercolumniation steel pile casting 18 is of a size of 980 × 980 × 500mm; Support the other end of long diagonal brace 5 to be fixed on the pre-buried outer spacing steel plate 7 arranged of supporting steel casing 4 in bean column node place below, spacing steel plate 7 is the Q345 hot rolled steel plate of 980 × 400 × 20mm.
Arrange many group suspension cables 9 near the position of middle part and end above overhanging type steel 3, suspension cable model is 6 × 19S.Suspension cable 9 is 30mm through preformed hole 10(diameter on top frame post 1) be connected with the anchor plate 11 of opposite side afterwards, anchor plate 11 is Q345 hot rolled steel plate, be of a size of 300mm × 300mm × 10mm, arrange counterweight 12 when working load is larger watering on floor, the other end of suspension cable 9 is connected with counterweight 12.
Between beam column, arrange beam column support bar 8, one end is connected with inside intercolumniation steel pile casting 18, and one end is connected with the steel plate be embedded on Vierendeel girder 2.Beam column support bar 8 length is 3m, adopt 12# i iron, beam column support bar 8 is provided with end plate 19 with support long diagonal brace 5 with the end supporting short brace 6, end plate 19 adopts the Q345 hot rolled steel plate of 200 × 200 × 10 mm, and all adopts M12 high-strength bolt auxiliary welding to be connected with the built-in fitting in frame construction.
Set up horizontal support skeleton 13 and landing slab 14 on overhanging type steel 3 top, landing slab 14 is set up scaffold system 15.Horizontal support skeleton 13 adopts 12# i iron, and landing slab adopts steel plate or wood glue plate.Scaffold adopts diameter to be the steel pipe of 48mm.
To encorbelment the construction method of formwork structure for mounting platform, mainly comprise following step:
Step one: make built-in fitting.Supporting steel casing 4 and intercolumniation steel pile casting 18 is made according to designing requirement, perforate on supporting steel casing, connecting bolt 16 is welded together through behind hole, spacing steel plate 7 and floor 21 are welded with supporting steel casing 4, and floor is between spacing steel plate 7 and supporting steel casing 4.
Step 2: make supporting rod and overhanging type steel.Select corresponding shaped steel as supporting rod and overhanging type steel 3 according to designing requirement, and end plate 17 is set at overhanging type steel 3 link; Support long diagonal brace 5, support the welding edges end plate 19 of short brace 6 and beam column support bar 8, and at end plate 19 two ends prepared screw-bolt hole.
Step 3: frame construction is built.When frame construction is built, the supporting steel casing 4 having welded connecting bolt 16 is embedded in bean column node place, will the intercolumniation steel pile casting 18 of spacing steel plate 7 and floor 21 has been welded and be embedded between bean column node, and arrange preformed hole 10 above frame column 1.
Step 4: overhanging type steel is installed.Utilize loop wheel machine that overhanging type steel 3 is lifted to bean column node place, then utilize connecting bolt 16 that supporting steel casing 4 is fixed with the end plate 17 of overhanging type steel end and welded.
Step 5: supporting rod is installed.Welded with the position near end bottom overhanging type steel 3 one end supporting long diagonal brace 5, the end plate 19 of the other end utilizes connecting bolt 20 to be connected with spacing steel plate 7, can weld reinforcement if desired.The one end supporting short brace 6 is welded with the position near middle part bottom overhanging type steel 3, and the end plate 19 of the other end is connected with the connecting bolt 20 of intercolumniation steel pile casting 18 arranged outside, can connect equally with welding is auxiliary.
Step 6: suspension cable is installed.Arrange many group suspension cables 9 on overhanging type steel 3 top, the other end of suspension cable 9 is connected with the anchor plate 11 of opposite side through the preformed hole 10 on frame column 1.If working load is comparatively large, counterweight 12 can be set watering on the floor built, and the other end of suspension cable is fixed in counterweight 12.
Step 7: beam column support bar is set.Inside frame construction, arrange beam column support bar 8, one end of beam column support bar 8 is connected with the connecting bolt 20 pre-buried with intercolumniation steel pile casting 18 and welds to be strengthened, and the other end is connected with the steel plate bolt be arranged on Vierendeel girder 2.
Step 8: scaffold system is set up.When after overhanging type steel 3 installation, be arranged in parallel horizontal support skeleton 13 up, and above horizontal support skeleton 13, lay the landing slab 14 that steel plate or wood glue plate make, and set up scaffold system 15 on landing slab 14.
Above-mentioned detailed description of the invention does not limit technical scheme of the present invention in any form, and the technical scheme that the mode that every employing is equal to replacement or equivalent transformation obtains all drops on protection scope of the present invention.
Claims (7)
1. to encorbelment formwork structure for mounting platform; it is characterized in that pre-buried intercolumniation steel pile casting on the frame column between frame column and the Nodes pre-buried supporting steel casing of Vierendeel girder, two nodes, the cross section of supporting steel casing, intercolumniation steel pile casting is slightly less than Vierendeel girder and frame column;
One end and the supporting steel casing of overhanging type steel are fixed through connecting bolt; Bottom overhanging type steel and between frame column, knighthead is set; Arrange suspension cable above overhanging type steel, suspension cable is connected with anchor plate through after the preformed hole on top frame post;
Between beam column, arrange beam column support bar, one end is connected with inside intercolumniation steel pile casting, and one end is connected with the steel plate be embedded on Vierendeel girder;
Set up horizontal support skeleton and landing slab on overhanging type steel top, landing slab sets up scaffold system.
2. formwork structure for mounting platform of encorbelmenting according to claim 1, it is characterized in that arranging counterweight watering on floor, the other end of suspension cable is connected with counterweight.
3. formwork structure for mounting platform of encorbelmenting according to claim 1, it is characterized in that described knighthead quantity is two, is be arranged on bottom overhanging type steel near the support long diagonal brace of end and the short brace of support being arranged on close middle part bottom overhanging type steel respectively; The other end supporting short brace is connected with intercolumniation steel pile casting; Support the other end of long diagonal brace to be fixed on the spacing steel plate that the pre-buried supporting steel casing in bean column node place below arranges outward.
4. formwork structure for mounting platform of encorbelmenting according to claim 1, is characterized in that beam column support bar, supports long diagonal brace, supports short brace, the connecting end portion of overhanging type steel is provided with end plate, end plate has bolt hole.
5. formwork structure for mounting platform of encorbelmenting according to claim 1, is characterized in that the quantity of suspension cable is more than one or one, is separately positioned on the position near end and middle part above overhanging type steel.
6. formwork structure for mounting platform of encorbelmenting according to claim 3, is characterized in that arranging floor between described spacing steel plate and intercolumniation steel pile casting.
7. to encorbelment the construction method of formwork structure for mounting platform, it is characterized in that comprising the following steps:
Step one: make built-in fitting, makes supporting steel casing and intercolumniation steel pile casting according to designing requirement, by supporting steel casing and connecting bolt welding, spacing steel plate and floor are welded with supporting steel casing, and floor is between spacing steel plate and supporting steel casing;
Step 2: make supporting rod and overhanging type steel, at overhanging type steel, the welding edges end plate that supports long diagonal brace, support short brace and beam column support bar, and on end plate prepared screw-bolt hole;
Step 3: frame construction is built, pouring frame structure, is fixed on design attitude by the built-in fitting that step one is made simultaneously, and arranges preformed hole above frame column;
Step 4: overhanging type steel is installed, and overhanging type steel is lifted to Nodes, fixes the end plate of overhanging type steel and supporting steel casing and weld with connecting bolt;
Step 5: supporting rod is installed, and arranges and supports long diagonal brace, supports short brace bottom overhanging type steel and between frame column, the other end supporting long diagonal brace is connected to spacing steel plate, and the other end supporting short brace is connected to intercolumniation steel pile casting;
Step 6: suspension cable is installed, and overhanging type steel arranges suspension cable, suspension cable is fixed on anchor plate through the preformed hole on frame column;
When working load is larger, counterweight is set watering on the floor built, the other end of suspension cable is connected to counterweight;
Step 7: arrange beam column support bar, arranges beam column support bar inside frame construction, and top and the intercolumniation steel pile casting of beam column support bar are fixed, bottom and the Interal fixation be arranged on Vierendeel girder;
Step 8: scaffold system is set up, when after overhanging type steel installation, be arranged in parallel horizontal support skeleton above overhanging type steel, and lay landing slab above horizontal support skeleton, and set up scaffold system on landing slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652884.9A CN104389419B (en) | 2014-11-18 | 2014-11-18 | Encorbelment and prop up mould structure for mounting platform and a constructional method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652884.9A CN104389419B (en) | 2014-11-18 | 2014-11-18 | Encorbelment and prop up mould structure for mounting platform and a constructional method |
Publications (2)
| Publication Number | Publication Date |
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| CN104389419A true CN104389419A (en) | 2015-03-04 |
| CN104389419B CN104389419B (en) | 2016-06-08 |
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| CN201410652884.9A Expired - Fee Related CN104389419B (en) | 2014-11-18 | 2014-11-18 | Encorbelment and prop up mould structure for mounting platform and a constructional method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104989092A (en) * | 2015-05-28 | 2015-10-21 | 杭州江润科技有限公司 | Construction method of high-altitude overhang superposition type steel truss bearing platform |
| CN107354946A (en) * | 2017-08-16 | 2017-11-17 | 中铁第四勘察设计院集团有限公司 | A kind of supporting construction of encorbelmenting for foundation pit steel support |
| CN107461033A (en) * | 2017-09-08 | 2017-12-12 | 深圳前海特辰科技有限公司 | Construction protection canopy and its construction method |
| CN109680923A (en) * | 2019-02-23 | 2019-04-26 | 江苏精享裕建工有限公司 | A kind of mounting structure and building method of builder's jack bottom platform |
| CN110397155A (en) * | 2016-10-20 | 2019-11-01 | 徐州乐泰机电科技有限公司 | A kind of green balcony for multi-storey building |
| CN110644611A (en) * | 2016-10-20 | 2020-01-03 | 徐州乐泰机电科技有限公司 | Can dismantle green balcony |
| CN110700543A (en) * | 2019-10-16 | 2020-01-17 | 上海建工一建集团有限公司 | Steel truss inclined strut system structure with section steel cantilever and construction method thereof |
| CN111395777A (en) * | 2020-04-24 | 2020-07-10 | 五冶集团上海有限公司 | Construction method of mounting cantilever platform of preheating tower |
| CN113565307A (en) * | 2021-07-02 | 2021-10-29 | 华北冶建工程建设有限公司 | High-altitude suspension modeling construction device and method thereof |
| CN114482266A (en) * | 2022-01-26 | 2022-05-13 | 淮安市博彦土木工程科学研究院有限公司 | Cantilever platform widening beam structure and assembling method thereof |
| CN115613798A (en) * | 2022-10-27 | 2023-01-17 | 北京房地集团有限公司 | Mounting structure and mounting method for cantilever beam of cantilever scaffold |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104989092B (en) * | 2015-05-28 | 2017-03-01 | 杭州江润科技有限公司 | A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform |
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| CN107461033A (en) * | 2017-09-08 | 2017-12-12 | 深圳前海特辰科技有限公司 | Construction protection canopy and its construction method |
| CN109680923A (en) * | 2019-02-23 | 2019-04-26 | 江苏精享裕建工有限公司 | A kind of mounting structure and building method of builder's jack bottom platform |
| CN109680923B (en) * | 2019-02-23 | 2021-05-04 | 江苏精享裕建工有限公司 | Mounting structure and building method of cantilever scaffold bottom platform |
| CN110700543A (en) * | 2019-10-16 | 2020-01-17 | 上海建工一建集团有限公司 | Steel truss inclined strut system structure with section steel cantilever and construction method thereof |
| CN111395777A (en) * | 2020-04-24 | 2020-07-10 | 五冶集团上海有限公司 | Construction method of mounting cantilever platform of preheating tower |
| CN113565307A (en) * | 2021-07-02 | 2021-10-29 | 华北冶建工程建设有限公司 | High-altitude suspension modeling construction device and method thereof |
| CN114482266A (en) * | 2022-01-26 | 2022-05-13 | 淮安市博彦土木工程科学研究院有限公司 | Cantilever platform widening beam structure and assembling method thereof |
| CN115613798A (en) * | 2022-10-27 | 2023-01-17 | 北京房地集团有限公司 | Mounting structure and mounting method for cantilever beam of cantilever scaffold |
| CN115613798B (en) * | 2022-10-27 | 2023-10-03 | 北京房地集团有限公司 | Mounting structure and mounting method of cantilever beam of cantilever scaffold |
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| CN104389419B (en) | 2016-06-08 |
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