CN110397165B - Cantilever structure and construction method - Google Patents
Cantilever structure and construction method Download PDFInfo
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- CN110397165B CN110397165B CN201910694839.2A CN201910694839A CN110397165B CN 110397165 B CN110397165 B CN 110397165B CN 201910694839 A CN201910694839 A CN 201910694839A CN 110397165 B CN110397165 B CN 110397165B
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 48
- 239000010959 steel Substances 0.000 claims description 48
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000009415 formwork Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
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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
-
- 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
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to the technical field of constructional engineering, in particular to an overhanging structure; the adopted technical scheme is as follows: the cantilever structure comprises a cantilever beam, wherein a framework is embedded in the cantilever beam, extends along the length direction of the cantilever beam, is a hollow shell, and has an H-shaped cross section; the cantilever beam is characterized by further comprising a fixing seat, the upper end of the fixing seat is embedded in the cantilever beam, the lower end of the fixing seat is embedded in a building and fixedly connected with the building, and the framework is fixedly connected with the fixing seat. The invention has the advantages of good bending resistance, compression resistance and torsion resistance, convenient supporting of the cantilever structure pouring die, high structural strength, convenient construction and short construction period.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an overhanging structure and a construction method.
Background
Modern buildings often adopt a high-altitude large overhanging method to meet the requirements of use functions and attractive appearance. Such as large-span atrium of public building and super high-rise commercial building, in order to achieve the effects of spacious, transparent and wide visual field, sometimes the height can reach more than ten layers; in high-rise and super-high-rise residential buildings, in order to stretch the individuality of the building, a framework on the roof is overhanging out of the building plane by a plurality of meters; the towers of the two high-rise and super-high-rise buildings are connected into a whole again in mid-air through a reinforced concrete structure, so that the style of the building is highlighted. The construction characteristics of the high-altitude large cantilever structures are as follows: the high-altitude large cantilever structure has the advantages of large span, high height, large construction load and high construction difficulty, so that the high-altitude large cantilever structure and the construction method thereof are improved, and the high-altitude large cantilever structure has very remarkable practical significance.
Disclosure of Invention
Aiming at the technical problem that the construction difficulty of the existing overhanging structure is high; the cantilever structure provided by the invention has good bending resistance, compression resistance and torsion resistance, is convenient for the supporting of a pouring die of the cantilever structure, and has the characteristics of high structural strength, convenience in construction and short construction period.
The invention is realized by the following technical scheme:
the cantilever structure comprises a cantilever beam, wherein a framework is embedded in the cantilever beam, extends along the length direction of the cantilever beam, is a hollow shell, and has an H-shaped cross section; the cantilever beam is characterized by further comprising a fixing seat, the upper end of the fixing seat is embedded in the cantilever beam, the lower end of the fixing seat is embedded in a building and fixedly connected with the building, and the framework is fixedly connected with the fixing seat.
According to the invention, the hollow H-shaped framework is embedded in the cantilever beam, so that the cantilever beam becomes a stiff beam, and the cantilever beam has all the characteristics of stiff concrete. Meanwhile, the hollow H-shaped framework is convenient for the H-shaped steel or I-shaped steel to be penetrated in during construction; the H-shaped steel or I-shaped steel is inserted into the framework to prop up the cantilever beam pouring die cavity and the protective frame, so that the cantilever beam pouring die supporting platform is not needed to be supported from the ground or from a building through a bridge, the construction is convenient, the construction efficiency can be improved, and the period can be shortened.
Preferably, the building comprises longitudinal beams, columns and cross beams, and the fixing seat is fixed at the junction of the longitudinal beams, the columns and the cross beams so as to transfer the vertical load of the cantilever beams to the columns and ensure the overall structural strength of the building.
The concrete implementation mode of the fixing seat is as follows: a through groove is formed in the middle of the upper end of the fixing seat, one end of the through groove is fixed at the upper end of the column, and one end of the through groove extends along the longitudinal beam and is fixed on the longitudinal beam; the cross section of the through groove is matched with the cross section of the framework, and the framework is inserted into the through groove, so that the framework can be positioned and installed quickly.
Further, the through groove is symmetrically fixed with a reinforcing groove on two sides, one end of the reinforcing groove is fixedly connected with the outer side wall of the through groove, and the bottom of the reinforcing groove is fixedly connected with the cross beam so as to enhance the connection strength of the fixing seat and the building.
Preferably, the fixing base lower extreme is provided with the wing muscle, the wing muscle inlays and establishes in longeron and post, still further improvement fixing base and building's joint strength to ensure the steadiness of cantilever beam, also be convenient for lead to the fixed construction in groove and strengthening groove.
Preferably, the wing ribs are respectively arranged at the middle parts of the lower ends of the through grooves and the reinforcing grooves, so that the through grooves and the reinforcing grooves are further convenient to fix.
Furthermore, the outer end of the cantilever beam is also provided with a tensioning part, and a tensioning rib is arranged in the tensioning part; the upper end of the longitudinal beam is provided with an anchor bar, a connecting bar is arranged in the framework in a penetrating way, one end of the connecting bar is connected with the anchor bar, and the other end of the connecting bar is connected with the tensioning bar. On one hand, the cavity of the skeleton at the outer end of the cantilever beam can be blocked, so that the skeleton is protected from being exposed in the air to rust so as to prevent the structural strength of the cantilever beam from being influenced; on the other hand, the cantilever beam can be tensioned, the structural performance of the cantilever beam is enhanced, and the bearing capacity of the cantilever beam is improved.
Preferably, the joint of the outer end of the cantilever beam and the tensioning part is a rough surface so as to enhance the binding force between the outer end of the cantilever beam and the tensioning part.
The invention also provides a construction method of the cantilever structure, which comprises the following steps:
anchoring a fixed seat at the intersection of longitudinal beam columns or at the end part of a longitudinal beam of a building, and reserving anchor bars on the longitudinal beam;
fixedly connecting the framework with the fixing seat, and inserting H-shaped steel or I-shaped steel which is matched with the cavity of the framework into the framework, so that two ends of the H-shaped steel or I-shaped steel are positioned outside the framework;
the inner end of H-shaped steel or I-shaped steel is detachably connected with the longitudinal beam through a U-shaped clamp;
hanging a vertical rod at the outer end of H-shaped steel or I-shaped steel through a U-shaped clamp, fixing a vertical rod at the bottom of the vertical rod, connecting the vertical rod with a building through a cross rod, and building a formwork supporting platform and an external protective net;
a cantilever Liang Jiaozhu mold cavity and a connecting mold cavity for connecting the cantilever beam with a building are supported, and concrete is poured;
after the cantilever beam can bear the load, dismantling a cantilever Liang Jiaozhu die cavity, a connecting die cavity, a supporting die supporting platform, an external protective net, H-shaped steel or I-shaped steel, and roughening the end part of the cantilever beam;
a bearing wall base mould is supported on a building, a tensioning part mould is supported at the outer end of a framework, tensioning ribs are supported in the tensioning part mould, connecting ribs are penetrated in the framework, and the connecting ribs are respectively connected with anchor ribs and the tensioning ribs;
and pouring the bearing wall base and the outer end of the cantilever beam to finish the construction of the cantilever beam.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the cantilever beam is embedded with an H-shaped hollow framework, and the framework is fixedly connected with a building through a fixing seat, so that the cantilever beam becomes a stiff beam and has all the characteristics of stiff concrete. Meanwhile, the hollow H-shaped framework is convenient for the H-shaped steel or I-shaped steel to be penetrated in during construction; the H-shaped steel or I-shaped steel is inserted into the framework to prop up the cantilever beam pouring die cavity and the protective frame, so that the cantilever beam pouring die supporting platform is not needed to be supported from the ground or from a building through a bridge, the construction is convenient, the construction efficiency can be improved, and the period can be shortened.
2. The outer end of the cantilever beam is also provided with a tensioning part, and a tensioning rib is arranged in the tensioning part; the upper end of the longitudinal beam is also provided with an anchor bar, and the framework is internally penetrated with a connecting bar, and the connecting bar is connected with the tensioning bar and the anchor bar. On one hand, the cavity of the skeleton at the outer end of the cantilever beam can be blocked, so that the skeleton is protected from being exposed in the air to rust so as to prevent the structural strength of the cantilever beam from being influenced; on the other hand, the cantilever beam can be tensioned, the structural performance of the cantilever beam is enhanced, and the bearing capacity of the cantilever beam is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is a schematic view of the A-A plane of FIG. 1;
fig. 3 is a schematic view of a structure of the fixing base.
In the drawings, the reference numerals and corresponding part names:
the device comprises a 1-framework, a 2-fixing seat, a 21-through groove, a 22-reinforcing groove, a 23-wing rib, an 8-anchor rib, an 11-longitudinal beam, a 12-column, a 13-cantilever beam, a 14-tensioning rib, a 15-connecting rib and a 16-tensioning part.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Examples
The cantilever structure comprises a cantilever beam 13, wherein a framework 1 is embedded in the cantilever beam 13, specifically, the framework 1 and the cantilever beam 13 are integrally cast and formed, and the framework 1 extends along the length direction of the cantilever beam 13. Therefore, the cantilever beam 13 is a stiff beam, and has the characteristics of high strength, small cross section size of the component, strong bond strength with concrete, saving the concrete, increasing the use space and reducing the construction cost. The framework 1 is a hollow shell, and the section of the framework 1 is H-shaped, namely the framework 1 is a middle-through shell formed by splicing a plurality of steel plates. Still include fixing base 2, fixing base 2 upper end inlays and establishes in cantilever beam 13, fixing base 2 lower extreme inlays and establishes in the building and with building fixed connection, skeleton 1 and fixing base 2 fixed connection.
It should be understood that the frame 1 can connect the cantilever beam 13 to the building as one body through the fixing base 2. Meanwhile, when the cantilever beam 13 is poured, the fixing base 2 is poured into the cantilever beam 13 together, so that the bonding strength of the cantilever beam 13 and a building can be increased. The hollow H-shaped framework 1 is convenient for H-shaped steel or I-shaped steel to be penetrated in during construction; the H-shaped steel or I-shaped steel is inserted into the framework 1 to prop up the cantilever beam pouring die cavity and the protection frame, so that a cantilever beam pouring die prop up platform is not needed to prop up from the ground or from a building through a bridge frame and the like, the construction is convenient, the construction efficiency can be improved, and the period is shortened.
Preferably, the building comprises longitudinal beams 11, columns 12 and cross beams, and the fixing base 2 is fixed at the junction of the longitudinal beams 11, the columns 12 and the cross beams. It can be understood that the junction of the longitudinal beam 11, the column 12 and the cross beam has high structural strength and large volume, so that the fixing of the fixing seat 2 is more convenient, the vertical load of the cantilever beam can be transferred to the column 12, and the overall structural strength of the building is ensured.
As a specific embodiment of the fixing base 2: the middle part of the upper end of the fixed seat 2 is provided with a through groove 21, one end of the through groove 21 is fixed at the upper end of the column 12, and one end of the through groove 21 extends along the longitudinal beam 11 and is fixed on the longitudinal beam 11. The section of the through groove 21 is matched with the section of the framework 1, and the framework 2 is inserted into the through groove 21, so that the framework 1 can be positioned and installed quickly.
Further, the two sides of the through groove 21 are symmetrically fixed with a reinforcing groove 22, one end of the reinforcing groove 22 is fixedly connected with the outer side wall of the through groove 21, and the bottom of the reinforcing groove 22 is fixedly connected with the cross beam so as to enhance the connection strength between the fixing seat 2 and the building.
Preferably, the lower end of the fixing base 2 is provided with a rib 23, the rib 23 is embedded in the longitudinal beam 11 and the column 12, and further improves the connection strength between the fixing base 2 and the building, so as to ensure the stability of the cantilever beam 13, and also facilitate the fixing construction of the through groove 21 and the reinforcing groove 22.
Preferably, the ribs 23 are separately disposed at the middle parts of the lower ends of the through grooves 21 and the reinforcing grooves 22, so as to further facilitate the fixing of the through grooves 21 and the reinforcing grooves 22.
Further, a tensioning portion 16 is further arranged at the outer end of the cantilever beam 13, and tensioning ribs 14 are arranged inside the tensioning portion 16. And meanwhile, the upper end of the longitudinal beam 11 is provided with an anchor bar 8, and the anchor bar 8 is a protruding bar reserved for pouring the longitudinal beam 11. A connecting rib 15 is arranged in the framework 1 in a penetrating way, one end of the connecting rib 15 is connected with the anchor rib 8, and the other end of the connecting rib 15 is connected with the tensioning rib 14. On one hand, the cavity of the framework 1 at the outer end of the cantilever beam 13 can be blocked, so that the framework 1 is protected, and the end head of the framework 1 is prevented from being exposed in the air to rust so as to influence the structural strength of the cantilever beam 13; on the other hand, the cantilever beam 13 can be tensioned, the structural performance of the cantilever beam 13 is enhanced, and the bearing capacity of the cantilever beam 13 is improved.
Preferably, the connection between the outer end of the cantilever beam 13 and the tensioning part 16 is a rough surface, so as to enhance the binding force between the outer end of the cantilever beam 13 and the tensioning part 16.
The invention also provides a construction method of the cantilever structure, which comprises the following steps:
prefabricating a framework 1 according to the length and the width of the cantilever beam 13, wherein the framework 1 is a hollow shell, the section of the framework 1 is H-shaped, and the framework 1 can be manufactured in batches according to the requirement, so that the manufacturing cost is reduced and the manufacturing efficiency is improved;
anchoring the fixed seat 2 at the intersection of the longitudinal beam columns or the end part of the longitudinal beam 11 of the building, generally pouring the fixed seat 2 and the longitudinal beam 11 and/or the column 12 integrally, and reserving anchor bars 8 on the longitudinal beam 11;
fixedly connecting the framework 1 with the fixed seat 2, lifting H-shaped steel or I-shaped steel matched with the cavity of the framework 1, and inserting the H-shaped steel or I-shaped steel into the framework 1 so that two ends of the H-shaped steel or I-shaped steel are positioned outside the framework 1;
the inner end (the end positioned in the building) of the H-shaped steel or I-shaped steel is detachably connected with the longitudinal beam 11 through the U-shaped clamp, and normally, one H-shaped steel is fixedly connected with the longitudinal beam 11 through two U-shaped clamps arranged at intervals so as to ensure that the connection between the H-shaped steel and the building is stable;
the outer end (suspension end) of the H-shaped steel or I-shaped steel is suspended with a vertical rod through a U-shaped clamp, a vertical rod is fixed at the bottom of the vertical rod, the vertical rod is connected with a building through a cross rod, a formwork supporting platform and an external protective net are built, the cantilever beam casting formwork supporting platform is not required to be supported from the ground or from the building through a bridge frame and the like, the construction is convenient, the construction efficiency can be improved, the period can be shortened, the construction of a high-altitude large cantilever structure is also met, and the application range is wide;
supporting a cantilever Liang Jiaozhu die cavity (the length of the cantilever beam pouring die cavity is the same as that of the framework 1) and a connecting die cavity for connecting the cantilever beam 13 with a building, and pouring concrete;
curing for a period of time, removing a cantilever Liang Jiaozhu die cavity, a connecting die cavity, a supporting die supporting platform, an external protective net, H-shaped steel or I-shaped steel after the cantilever beam 13 can bear load, and roughening the end part of the cantilever beam 13;
a bearing wall base mould is supported on a building, a tensioning part mould is supported at the outer end of the framework 1, a tensioning rib 14 is supported in the tensioning part mould, a connecting rib 15 is penetrated in the framework 1, and the connecting rib 15 is respectively connected with the anchor rib 8 and the tensioning rib 14;
and pouring the bearing wall base and the tensioning part to finish the construction of the cantilever beam 13, wherein when concrete is poured, part of concrete can enter into the cavity inside the framework 1 to block the two ends of the framework 1, and the connection strength of the framework, the bearing wall base and the tensioning part can be enhanced.
It should be noted that, the cantilever beam 13 at the lower end can be used as a construction foundation for constructing a platform and an external protection net by using the cantilever beam formwork at the upper end, and the cantilever beam 13 at the upper end can be directly constructed by formwork pouring so as to further improve the construction efficiency and accelerate the construction progress. The H-shaped steel can be reused, so that the cost is saved.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The utility model provides a structure encorbelments, includes cantilever beam (13), its characterized in that: the cantilever beam (13) is internally embedded with a framework (1), the framework (1) extends along the length direction of the cantilever beam (13), the framework (1) is a hollow shell, and the section of the framework (1) is H-shaped; the cantilever beam type building framework is characterized by further comprising a fixed seat (2), wherein the upper end of the fixed seat (2) is embedded in the cantilever beam (13), the lower end of the fixed seat (2) is embedded in a building and fixedly connected with the building, and the framework (1) is fixedly connected with the fixed seat (2);
the building comprises a longitudinal beam (11), a column (12) and a cross beam, wherein the fixing seat (2) is fixed at the junction of the longitudinal beam (11), the column (12) and the cross beam;
a through groove (21) is formed in the middle of the upper end of the fixed seat (2), one end of the through groove (21) is fixed at the upper end of the column (12), and one end of the through groove (21) extends along the longitudinal beam (11) and is fixed on the longitudinal beam (11); the cross section of the through groove (21) is matched with the cross section of the framework (1), and the framework (1) is inserted into the through groove (21);
reinforcing grooves (22) are symmetrically fixed on two sides of the through groove (21), one end of each reinforcing groove (22) is fixedly connected with the outer side wall of the through groove (21), and the bottom of each reinforcing groove (22) is fixedly connected with the cross beam;
the lower end of the fixed seat (2) is provided with a wing rib (23), the wing rib (23) is embedded in the longitudinal beam (11) and the column (12), and the wing rib (23) is respectively arranged in the middle parts of the lower ends of the through groove (21) and the reinforcing groove (22);
the outer end of the cantilever beam (13) is also provided with a tensioning part (16), and a tensioning rib (14) is arranged in the tensioning part (16); the upper end of the longitudinal beam (11) is provided with an anchor bar (8), a connecting bar (15) is arranged in the framework (1) in a penetrating way, one end of the connecting bar (15) is connected with the anchor bar (8), and the other end of the connecting bar (15) is connected with the tensioning bar (14).
2. The cantilever structure according to claim 1, wherein: the joint of the outer end of the cantilever beam (13) and the tensioning part (16) is a rough surface.
3. The construction method of the cantilever structure, which is characterized by being used for building the cantilever structure as claimed in claim 1 or 2, comprises the following steps:
anchoring a fixed seat at the intersection of longitudinal beam columns or at the end part of a longitudinal beam of a building, and reserving anchor bars on the longitudinal beam;
fixedly connecting the framework with the fixing seat, and inserting H-shaped steel or I-shaped steel which is matched with the cavity of the framework into the framework, so that two ends of the H-shaped steel or I-shaped steel are positioned outside the framework;
the inner end of H-shaped steel or I-shaped steel is detachably connected with the longitudinal beam through a U-shaped clamp;
hanging a vertical rod at the outer end of H-shaped steel or I-shaped steel through a U-shaped clamp, fixing a vertical rod at the bottom of the vertical rod, connecting the vertical rod with a building through a cross rod, and building a formwork supporting platform;
a cantilever Liang Jiaozhu mold cavity and a connecting mold cavity for connecting the cantilever beam with a building are supported, and concrete is poured;
after the cantilever beam can bear the load, dismantling a cantilever Liang Jiaozhu die cavity, a connecting die cavity, a supporting die supporting platform, an external protective net, H-shaped steel or I-shaped steel, and roughening the end part of the cantilever beam;
a bearing wall base mould is supported on a building, a tensioning part mould is supported at the outer end of a framework, tensioning ribs are supported in the tensioning part mould, connecting ribs are penetrated in the framework, and the connecting ribs are respectively connected with anchor ribs and the tensioning ribs;
and pouring the bearing wall base and the outer end of the cantilever beam to finish the construction of the cantilever beam.
4. The construction method of the cantilever structure according to claim 3, wherein: and a protective net is erected outside the formwork supporting platform.
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| CN201910694839.2A CN110397165B (en) | 2019-07-30 | 2019-07-30 | Cantilever structure and construction method |
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| CN110397165B true CN110397165B (en) | 2024-04-09 |
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| CN203230165U (en) * | 2012-12-11 | 2013-10-09 | 中建三局建设工程股份有限公司 | Template support platform for ultra-high cantilever structure |
| CN103195193A (en) * | 2013-04-24 | 2013-07-10 | 石家庄晶达建筑体系有限公司 | Structure and construction method of cast-in-site style welded steel frame composite concrete shear wall |
| CN204081070U (en) * | 2014-09-10 | 2015-01-07 | 广东南海国际建筑设计有限公司 | A kind of large span steel frame beam cantilevered structure |
| CN105887656A (en) * | 2016-04-25 | 2016-08-24 | 唐红梅 | Emergency repairing gallery road for roadbed missed section of mountain area highway and installation method of emergency repairing gallery road |
| CN205688586U (en) * | 2016-06-23 | 2016-11-16 | 南京中艺建筑设计院股份有限公司 | A kind of prefabricated balcony attachment structure |
| CN206928440U (en) * | 2017-06-05 | 2018-01-26 | 中建八局第四建设有限公司 | One kind is encorbelmented I-steel fixing device |
| CN208830696U (en) * | 2018-08-31 | 2019-05-07 | 南京明辉建设有限公司 | A kind of cantilever steel girder wall penetration structure |
| CN210685165U (en) * | 2019-07-30 | 2020-06-05 | 中信国安建工集团有限公司 | Structure of encorbelmenting |
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