CN111706087A - Mounting method of steel support frame for C-shaped stock ground cantilever platform construction - Google Patents
Mounting method of steel support frame for C-shaped stock ground cantilever platform construction Download PDFInfo
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- CN111706087A CN111706087A CN202010368301.5A CN202010368301A CN111706087A CN 111706087 A CN111706087 A CN 111706087A CN 202010368301 A CN202010368301 A CN 202010368301A CN 111706087 A CN111706087 A CN 111706087A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 238000010276 construction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04B1/3408—Extraordinarily-supported small buildings
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the field of building construction, in particular to a method for installing a steel support frame for C-shaped stock ground cantilever platform construction; step 1, construction preparation; step 2, mounting a steel bracket; step 3, mounting a longitudinal distribution beam; step 4, installing a transverse distribution beam; step 5, installing protective facilities; and 6, checking and delivering. The invention adopts the symmetrical installation of the brackets at the two sides of the middle retaining wall, fully utilizes the structure of the middle retaining wall as a construction platform, effectively ensures the installation precision and the installation efficiency of the brackets, is safe and reliable, does not need to set up an operation platform and take other measures, and is economic and environment-friendly.
Description
Technical Field
The invention relates to the field of building construction, in particular to a method for installing a steel support frame for C-shaped stock ground cantilever platform construction.
Background
The C-shaped closed environment-friendly stock ground is the key direction for the reconstruction of the stock ground of domestic iron and steel enterprises at present. The material taking machine track platform and the unloading machine track platform of the middle retaining wall are overhanging type platforms, the top standard heights of the two overhanging platforms are respectively within +16m to +21m and +29 to +32m, the overhanging width of the unloading machine platform exceeds 13m, and the overhanging type platform is a key point and a difficulty point of C-shaped stock yard middle retaining wall construction. Compared with the traditional method of directly erecting the full hall scaffold supporting system from the ground, the construction method of designing the steel support frame and the overhanging scaffold supporting system by using the middle retaining wall structure can greatly reduce the erecting amount of the scaffold by more than 80 percent, and is safe, reliable, economical and efficient. Because the steel support frame is connected to the middle retaining wall structure through the counter-pulling screw rod, the steel support frame and the counter-pulling screw rod need to be installed at high altitude, construction potential safety hazards are many, installation levelness and verticality of brackets at two sides of the steel support frame, the transverse distribution beams and the longitudinal distribution beams are difficult to guarantee, local stress of the steel support frame is uneven, and instability is caused.
Disclosure of Invention
The invention aims to overcome the defects and provides a method for mounting a steel support frame for C-shaped stock ground cantilever platform construction, so that the problems that the high-altitude mounting precision of the steel support frame is difficult to guarantee, the potential safety hazard is high and the like are solved, the safe, efficient and accurate mounting of the steel support frame is realized, and a tool for applying a middle retaining wall cantilever platform is guaranteed.
In order to achieve the above object, the present invention is realized by:
a method for installing a steel support frame for C-shaped stock ground cantilever platform construction; comprises that
Step 1, construction preparation;
processing a steel support frame and a counter-pulling screw rod according to the drawing requirements, and building an external scaffold for constructing a middle retaining wall;
step 2, mounting the steel bracket
Respectively hoisting 1 group of brackets by using two cranes, and simultaneously installing the brackets on two sides of the middle retaining wall; the lower part of the bracket needs to be inserted into the pre-buried notch of the middle retaining wall, and the upper part needs to be aligned with the preformed hole of the counter-pull screw; after the brackets on the two sides are in place at the same time, penetrating a counter-pull screw, after the brackets on the two sides are finely adjusted, screwing down the counter-pull screw, and then removing the chain block; continuing to install the next group of brackets 1 in the above method;
step 3, mounting a longitudinal distribution beam;
after the installation of every two groups of brackets on the same side of the middle retaining wall is finished, longitudinal distribution beams can be sequentially installed from the inner side of the middle retaining wall to the outer side; when the first longitudinal distribution beam is installed, an installer should hang a safety belt and a chain block on the top of the middle retaining wall by using a top steel bar, adjust the first longitudinal distribution beam in position by the chain block, and then weld and fix the bracket and the longitudinal distribution beam, so that the next longitudinal distribution beam can be installed;
step 4, installing a transverse distribution beam;
sequentially hoisting the transverse distribution beams to the upper parts of the longitudinal distribution beams according to the spacing required by the drawing, and welding and fixing the transverse distribution beams and the longitudinal distribution beams after the transverse distribution beams are adjusted in position;
step 5, installing protective facilities;
after the longitudinal and transverse distribution beams on each two groups of brackets are installed, arranging a through long I-shaped steel beam on the outermost side of each bracket along the length direction of the middle retaining wall, welding and fixing the I-shaped steel beams with the brackets, welding a deformed steel bar with the length of 30cm at the upper part of each I-shaped steel beam according to the distance of 3m, sleeving a steel pipe with the length of 1.2m outside each deformed steel bar, erecting transverse steel pipes on the upper part, the middle part and the lower part of each steel pipe after the installation is finished, and connecting the transverse steel pipes;
step 6, checking and delivering;
after the steel support frames are completely installed, whether the split screws are connected and fastened, whether the brackets are loosened, whether the longitudinal and transverse distribution beams are fixed with the brackets firmly, and whether the elevation and the installation precision of the brackets and the distribution beams meet the requirements are sequentially checked; and after all the retaining walls are qualified, handing over the scaffold construction team, and carrying out erection construction on the middle retaining wall overhanging platform supporting system.
The installation method of the steel support frame for the construction of the C-shaped stock ground cantilever platform is characterized by comprising the following steps of (1) installing the steel support frame for the construction of the C-shaped stock ground cantilever platform;
in the step 1, the building height of the external scaffold for the construction of the intermediate retaining wall is 0.8-1.5m lower than that of the reserved hole.
The installation method of the steel support frame for the construction of the C-shaped stock ground cantilever platform is characterized by comprising the following steps of (1) installing the steel support frame for the construction of the C-shaped stock ground cantilever platform;
in step 2, when the bracket is hoisted, 1 hoisting point is required to be arranged at each 1/3 position on the upper chord of the bracket away from two ends;
in the step 2, the bracket installation at each side is simultaneously operated by two persons, wherein one person stands on an outer scaffold and inserts the lower part of the bracket into the embedded notch of the middle retaining wall; another person hangs a safety belt and a chain block on the upper part of the middle retaining wall by using a reserved steel bar on the upper part of the middle retaining wall, levels the upper part of the bracket through the chain block, and is provided with a counter-pull screw;
in the step 2, when the opposite-pulling screw rods are fastened, the two sides are simultaneously screwed by using a spanner, and the exposed lengths of screw openings on the two sides are ensured to be consistent;
in step 2, after the oppositely-pulled screw rods are fastened, the lower part of the bracket and the periphery of the embedded notch are tightly wedged;
in step 2, after all the brackets in the same construction section are installed, leveling all the brackets in the construction section by using a total station or a level gauge.
The installation method of the steel support frame for the construction of the C-shaped stock ground cantilever platform is characterized by comprising the following steps of (1) installing the steel support frame for the construction of the C-shaped stock ground cantilever platform;
step 3, after the longitudinal distribution beams are installed, fully hanging a safety net below the longitudinal distribution beams, and paving a bamboo springboard above the longitudinal distribution beams;
in step 3, the pre-arch height L multiplied by 2/1000 for installing the longitudinal distribution beam;
in the step 3 and the step 4, in order to ensure that the loads on the two sides are uniformly distributed, the longitudinal and transverse distribution beams are installed on the side of the middle retaining wall simultaneously.
The invention adopts symmetrical installation of brackets at two sides of the middle retaining wall, each group of brackets adopts the cooperation of 2 persons above and below, the middle retaining wall structure is fully utilized as a construction platform, the installation precision and the installation efficiency of the brackets are effectively ensured, the safety and the reliability are realized, an operation platform does not need to be set up, other measures are not needed, and the economic and environment-friendly effects are realized.
Drawings
FIG. 1 is a schematic illustration of a bracket installation.
FIG. 2 is a schematic view showing the completion of the installation of the steel support bracket.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in fig. 1 and 2; a method for installing a steel support frame for C-shaped stock ground cantilever platform construction; comprises that
Step 1, construction preparation;
processing a steel support frame and a counter-pulling screw rod according to the drawing requirements, and building an external scaffold for constructing a middle retaining wall;
step 2, mounting the steel bracket
Respectively hoisting 1 group of brackets by using two cranes, and simultaneously installing the brackets on two sides of the middle retaining wall; the lower part of the bracket needs to be inserted into the pre-buried notch of the middle retaining wall, and the upper part needs to be aligned with the preformed hole of the counter-pull screw; after the brackets on the two sides are in place at the same time, penetrating a counter-pull screw, after the brackets on the two sides are finely adjusted, screwing down the counter-pull screw, and then removing the chain block; continuing to install the next group of brackets 1 in the above method;
step 3, mounting a longitudinal distribution beam;
after the installation of every two groups of brackets on the same side of the middle retaining wall is finished, longitudinal distribution beams can be sequentially installed from the inner side of the middle retaining wall to the outer side; when the first longitudinal distribution beam is installed, an installer should hang a safety belt and a chain block on the top of the middle retaining wall by using a top steel bar, adjust the first longitudinal distribution beam in position by the chain block, and then weld and fix the bracket and the longitudinal distribution beam, so that the next longitudinal distribution beam can be installed;
step 4, installing a transverse distribution beam;
sequentially hoisting the transverse distribution beams to the upper parts of the longitudinal distribution beams according to the spacing required by the drawing, and welding and fixing the transverse distribution beams and the longitudinal distribution beams after the transverse distribution beams are adjusted in position;
step 5, installing protective facilities;
after the longitudinal and transverse distribution beams on each two groups of brackets are installed, arranging a through long I-shaped steel beam on the outermost side of each bracket along the length direction of the middle retaining wall, welding and fixing the I-shaped steel beams with the brackets, welding a deformed steel bar with the length of 30cm at the upper part of each I-shaped steel beam according to the distance of 3m, sleeving a steel pipe with the length of 1.2m outside each deformed steel bar, erecting transverse steel pipes on the upper part, the middle part and the lower part of each steel pipe after the installation is finished, and connecting the transverse steel pipes;
step 6, checking and delivering;
after the steel support frames are completely installed, whether the split screws are connected and fastened, whether the brackets are loosened, whether the longitudinal and transverse distribution beams are fixed with the brackets firmly, and whether the elevation and the installation precision of the brackets and the distribution beams meet the requirements are sequentially checked; and after all the retaining walls are qualified, handing over the scaffold construction team, and carrying out erection construction on the middle retaining wall overhanging platform supporting system.
The installation method of the steel support frame for the construction of the C-shaped stock ground cantilever platform is characterized by comprising the following steps of (1) installing the steel support frame for the construction of the C-shaped stock ground cantilever platform;
in the step 1, the building height of the external scaffold for the construction of the intermediate retaining wall is 0.8-1.5m lower than that of the reserved hole.
The installation method of the steel support frame for the construction of the C-shaped stock ground cantilever platform is characterized by comprising the following steps of (1) installing the steel support frame for the construction of the C-shaped stock ground cantilever platform;
in step 2, when the bracket is hoisted, 1 hoisting point is required to be arranged at each 1/3 position on the upper chord of the bracket away from two ends;
in the step 2, the bracket installation at each side is simultaneously operated by two persons, wherein one person stands on an outer scaffold and inserts the lower part of the bracket into the embedded notch of the middle retaining wall; another person hangs a safety belt and a chain block on the upper part of the middle retaining wall by using a reserved steel bar on the upper part of the middle retaining wall, levels the upper part of the bracket through the chain block, and is provided with a counter-pull screw;
in the step 2, when the opposite-pulling screw rods are fastened, the two sides are simultaneously screwed by using a spanner, and the exposed lengths of screw openings on the two sides are ensured to be consistent;
in step 2, after the oppositely-pulled screw rods are fastened, the lower part of the bracket and the periphery of the embedded notch are tightly wedged;
in step 2, after all the brackets in the same construction section are installed, leveling all the brackets in the construction section by using a total station or a level gauge.
The installation method of the steel support frame for the construction of the C-shaped stock ground cantilever platform is characterized by comprising the following steps of (1) installing the steel support frame for the construction of the C-shaped stock ground cantilever platform;
step 3, after the longitudinal distribution beams are installed, fully hanging a safety net below the longitudinal distribution beams, and paving a bamboo springboard above the longitudinal distribution beams;
in step 3, the pre-arch height L multiplied by 2/1000 for installing the longitudinal distribution beam;
in the step 3 and the step 4, in order to ensure that the loads on the two sides are uniformly distributed, the longitudinal and transverse distribution beams are installed on the side of the middle retaining wall simultaneously.
The invention adopts symmetrical installation of brackets at two sides of the middle retaining wall, each group of brackets adopts the cooperation of 2 persons above and below, the middle retaining wall structure is fully utilized as a construction platform, the installation precision and the installation efficiency of the brackets are effectively ensured, the safety and the reliability are realized, an operation platform does not need to be set up, other measures are not needed, and the economic and environment-friendly effects are realized.
Claims (4)
1. A method for installing a steel support frame for C-shaped stock ground cantilever platform construction; the method is characterized in that: comprises that
Step 1, construction preparation;
processing a steel support frame and a counter-pulling screw rod according to the drawing requirements, and building an external scaffold for constructing a middle retaining wall;
step 2, mounting the steel bracket
Respectively hoisting 1 group of brackets by using two cranes, and simultaneously installing the brackets on two sides of the middle retaining wall; the lower part of the bracket needs to be inserted into the pre-buried notch of the middle retaining wall, and the upper part needs to be aligned with the preformed hole of the counter-pull screw; after the brackets on the two sides are in place at the same time, penetrating a counter-pull screw, after the brackets on the two sides are finely adjusted, screwing down the counter-pull screw, and then removing the chain block; continuing to install the next group of brackets 1 in the above method;
step 3, mounting a longitudinal distribution beam;
after the installation of every two groups of brackets on the same side of the middle retaining wall is finished, longitudinal distribution beams can be sequentially installed from the inner side of the middle retaining wall to the outer side; when the first longitudinal distribution beam is installed, an installer should hang a safety belt and a chain block on the top of the middle retaining wall by using a top steel bar, adjust the first longitudinal distribution beam in position by the chain block, and then weld and fix the bracket and the longitudinal distribution beam, so that the next longitudinal distribution beam can be installed;
step 4, installing a transverse distribution beam;
sequentially hoisting the transverse distribution beams to the upper parts of the longitudinal distribution beams according to the spacing required by the drawing, and welding and fixing the transverse distribution beams and the longitudinal distribution beams after the transverse distribution beams are adjusted in position;
step 5, installing protective facilities;
after the longitudinal and transverse distribution beams on each two groups of brackets are installed, arranging a through long I-shaped steel beam on the outermost side of each bracket along the length direction of the middle retaining wall, welding and fixing the I-shaped steel beams with the brackets, welding a deformed steel bar with the length of 30cm at the upper part of each I-shaped steel beam according to the distance of 3m, sleeving a steel pipe with the length of 1.2m outside each deformed steel bar, erecting transverse steel pipes on the upper part, the middle part and the lower part of each steel pipe after the installation is finished, and connecting the transverse steel pipes;
step 6, checking and delivering;
after the steel support frames are completely installed, whether the split screws are connected and fastened, whether the brackets are loosened, whether the longitudinal and transverse distribution beams are fixed with the brackets firmly, and whether the elevation and the installation precision of the brackets and the distribution beams meet the requirements are sequentially checked; and after all the retaining walls are qualified, handing over the scaffold construction team, and carrying out erection construction on the middle retaining wall overhanging platform supporting system.
2. The method for installing a steel support frame for construction of a C-shaped stock ground cantilever platform according to claim 1; the method is characterized in that:
in the step 1, the building height of the external scaffold for the construction of the intermediate retaining wall is 0.8-1.5m lower than that of the reserved hole.
3. The method for installing a steel support frame for construction of a C-shaped stock ground cantilever platform according to claim 1; the method is characterized in that:
in step 2, when the bracket is hoisted, 1 hoisting point is required to be arranged at each 1/3 position on the upper chord of the bracket away from two ends;
in the step 2, the bracket installation at each side is simultaneously operated by two persons, wherein one person stands on an outer scaffold and inserts the lower part of the bracket into the embedded notch of the middle retaining wall; another person hangs a safety belt and a chain block on the upper part of the middle retaining wall by using a reserved steel bar on the upper part of the middle retaining wall, levels the upper part of the bracket through the chain block, and is provided with a counter-pull screw;
in the step 2, when the opposite-pulling screw rods are fastened, the two sides are simultaneously screwed by using a spanner, and the exposed lengths of screw openings on the two sides are ensured to be consistent;
in step 2, after the oppositely-pulled screw rods are fastened, the lower part of the bracket and the periphery of the embedded notch are tightly wedged;
in step 2, after all the brackets in the same construction section are installed, leveling all the brackets in the construction section by using a total station or a level gauge.
4. The method for installing a steel support frame for construction of a C-shaped stock ground cantilever platform according to claim 1; the method is characterized in that:
step 3, after the longitudinal distribution beams are installed, fully hanging a safety net below the longitudinal distribution beams, and paving a bamboo springboard above the longitudinal distribution beams;
in step 3, the pre-arch height L multiplied by 2/1000 for installing the longitudinal distribution beam;
in the step 3 and the step 4, in order to ensure that the loads on the two sides are uniformly distributed, the longitudinal and transverse distribution beams are installed on the side of the middle retaining wall simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368301.5A CN111706087A (en) | 2020-04-30 | 2020-04-30 | Mounting method of steel support frame for C-shaped stock ground cantilever platform construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368301.5A CN111706087A (en) | 2020-04-30 | 2020-04-30 | Mounting method of steel support frame for C-shaped stock ground cantilever platform construction |
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| CN111706087A true CN111706087A (en) | 2020-09-25 |
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| CN202010368301.5A Pending CN111706087A (en) | 2020-04-30 | 2020-04-30 | Mounting method of steel support frame for C-shaped stock ground cantilever platform construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796410A (en) * | 2021-01-28 | 2021-05-14 | 中冶赛迪工程技术股份有限公司 | A kind of prefabricated platform structure and its construction method |
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| DE102009014858A1 (en) * | 2009-03-30 | 2010-10-21 | Döllen, Heinz von | Formwork device for placing concrete in cantilevered parapet at bridge, has intermediate piece hinged above pivot point at end region of arm and detachably fixed at rod of support frame by cantilever arm at pivot point |
| CN202370233U (en) * | 2011-08-15 | 2012-08-08 | 成都市第六建筑工程公司 | Pull rod type external wall cantilever discharging platform setting-up structure |
| CN107152160A (en) * | 2017-06-22 | 2017-09-12 | 中国五冶集团有限公司 | A kind of shuttering supporting builder's jack operation platform erection method |
| CN108643544A (en) * | 2018-04-02 | 2018-10-12 | 中国十七冶集团有限公司 | A kind of high-altitude overhanging operation platform strutting system and construction method |
| CN110552502A (en) * | 2019-08-08 | 2019-12-10 | 上海二十冶建设有限公司 | Construction method of C-shaped stock yard intermediate retaining wall overhanging platform |
-
2020
- 2020-04-30 CN CN202010368301.5A patent/CN111706087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009014858A1 (en) * | 2009-03-30 | 2010-10-21 | Döllen, Heinz von | Formwork device for placing concrete in cantilevered parapet at bridge, has intermediate piece hinged above pivot point at end region of arm and detachably fixed at rod of support frame by cantilever arm at pivot point |
| CN202370233U (en) * | 2011-08-15 | 2012-08-08 | 成都市第六建筑工程公司 | Pull rod type external wall cantilever discharging platform setting-up structure |
| CN107152160A (en) * | 2017-06-22 | 2017-09-12 | 中国五冶集团有限公司 | A kind of shuttering supporting builder's jack operation platform erection method |
| CN108643544A (en) * | 2018-04-02 | 2018-10-12 | 中国十七冶集团有限公司 | A kind of high-altitude overhanging operation platform strutting system and construction method |
| CN110552502A (en) * | 2019-08-08 | 2019-12-10 | 上海二十冶建设有限公司 | Construction method of C-shaped stock yard intermediate retaining wall overhanging platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112796410A (en) * | 2021-01-28 | 2021-05-14 | 中冶赛迪工程技术股份有限公司 | A kind of prefabricated platform structure and its construction method |
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Application publication date: 20200925 |