CN113958112A - Comprehensive scaffold construction method - Google Patents
Comprehensive scaffold construction method Download PDFInfo
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- CN113958112A CN113958112A CN202111278040.9A CN202111278040A CN113958112A CN 113958112 A CN113958112 A CN 113958112A CN 202111278040 A CN202111278040 A CN 202111278040A CN 113958112 A CN113958112 A CN 113958112A
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- scaffold
- steel
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- shaped steel
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
- E04G1/04—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section
- E04G1/06—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section comprising members with rod-like or tubular portions fitting together end to end, with or without separate connecting pieces
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention is a comprehensive scaffold construction method; the method comprises the steps of placing a base of a scaffold on a top plate of a concrete basement; setting corresponding upright post positions; the joints of the vertical rods are staggered; the wall connecting piece is arranged from the longitudinal horizontal rod of the first step of the bottom layer; a handrail is arranged on the inner side of the outer row of upright posts on the operation layer of the scaffold paving plate; mounting I-shaped steel of the flower basket cantilever scaffold; positioning the position of the upright stanchion; mounting overhanging I-shaped steel; mounting the diagonal draw bar on the I-shaped steel; mounting vertical positioning steel bars on the I-shaped steel; and installing the scaffold on the upper part of the I-shaped steel. The method provides a better safety guarantee for installing the flower basket scaffold, and due to the more accurate back jacking, the method provides a greater safety guarantee for the use of the flower basket scaffold before the diagonal draw bars are not installed, and after the lower scaffold is withdrawn from the work, the normal working performance of the upper flower basket scaffold can not be influenced in the dismantling process.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a comprehensive scaffold.
Background
At present, when the bottom I-steel of a flower basket scaffold is installed, the vertical rod of a lower support body is required to be jacked back, the bottom of the vertical rod needs to be located on the ground or on the upper portion of the I-steel of the flower basket scaffold, but the positions of the reserved bolt holes of the I-steel to be installed are not considered frequently in the construction process, or the situation that the I-steel cannot be accurately positioned due to the change of an upper structure is compared with the situation that the I-steel of the flower basket scaffold is installed, the vertical rod of the lower scaffold needs to be jacked back, the jacking of actual construction is not standard, the support is often supported by means of a horizontal longitudinal cross rod, and great risks exist.
Disclosure of Invention
The invention aims to overcome the defects and provides a comprehensive scaffold construction method for solving the problems that I-shaped steel is difficult and irregular to jack back when a flower basket scaffold is installed.
In order to achieve the above object, the present invention is realized by:
a construction method of a comprehensive scaffold,
step 1, placing a base of a scaffold on a top plate of a concrete basement, so as to obtain the bearing capacity requirement of a flat, solid and firm foundation, ensure the settlement of the whole scaffold to meet the standard requirement, and avoid the scaffold from being overturned integrally due to insufficient bearing capacity of the foundation;
step 2, setting corresponding upright rod positions by combining drawings and preset installation positions of I-steel of the upper flower basket scaffold, so that the upright rod positions of the floor scaffold and the top-returning positions of the I-steel of the flower basket scaffold to be installed on the upper parts of the upright rods are located on the same vertical surface;
step 3, the joints of the vertical rods are staggered, the vertical rods with the distance of 1.5m and 1.0m are used for starting the rods at intervals, and the distance between the joints of the vertical rods is staggered by 0.5 m; each layer of each five spans is provided with a vertical diagonal rod longitudinally along the outer side of the frame body, and each layer of the end spans is provided with a vertical diagonal rod transversely, so that mutual twisting of the frame body in the use process of the frame body is avoided, and the safety and stability of the frame body are ensured;
step 4, the wall connecting piece is arranged from the longitudinal horizontal rod of the first step of the bottom layer, and the two forms are as follows: firstly, pre-burying steel pipes with the diameter of 48 multiplied by 3.6 on frame beams and plates, wherein the steel pipes are 350mm long, 150mm buried and 200mm exposed; secondly, under the condition that the wall connecting piece cannot be pre-buried, wall connecting points are arranged on the structural column in a hoop form for replacement; the wall connecting rod and the embedded rod are firmly fixed and locked through double fasteners, and the inspection torque is required to be more than 40 N.m; the arrangement of the wall connecting piece enables the frame body and the structure to form a whole to a great extent, and the anti-overturning capability of the frame body is enhanced again by means of the stability of the structure;
step 5, arranging two guardrails within the range of 2000mm in each step on the inner side of the outward upright stanchion on the operation layer of the scaffold paving plate, wherein each guardrail is 500mm, and a 200mm high foot baffle plate is arranged on the outer side of the safe dense mesh net and adopts a special perforated steel plate net; two guardrails are additionally arranged on the outer side of the topmost layer of the frame, and the height of the guardrails is 1.5 m; and the outer side is sealed by a perforated steel plate net; a handrail is arranged at the inner side of 1000mm and is connected by a common steel pipe;
step 6, when the height of the scaffold body of the floor scaffold is close to 24m, combining the height of the structural layer, taking a proper position to terminate the erection of the floor scaffold, and installing I-steel of the flower basket cantilever scaffold;
step 7, when the vertical upright stanchion of the floor scaffold is installed, the position of the upright stanchion is positioned according to the actual situation;
step 8, installing the cantilever I-shaped steel when the strength of the concrete reaches 5Mpa, and temporarily placing the cantilever beam on a lower scaffold if the strength of the concrete does not meet the requirement during installation so as to ensure that structural members cannot damage the concrete due to bending moment caused by the gravity borne by the I-shaped steel during installation of the cantilever beam; when the scaffold is installed, the bolt tightening torque needs to reach 117 N.m, the fastening of the high-strength bolt is an important control point for installing the cantilever beam, the fastening needs to be initially screwed by 50 percent, the same is also to ensure that the pre-embedded bolt in the concrete cannot be loosened due to too large torsion, and the lower part of the I-steel needs to be provided with the vertical upright rod back-jacking of the scaffold at the next layer; the re-twisting of 50 percent and the final twisting are finished within 24 hours in sequence; the cantilever steel beam is fastened by adopting a high-strength bolt, a square gasket 80 x 8mm is required to be adopted, and then a nut is screwed tightly;
step 9, when the scaffold on the upper part of the I-steel is installed to be not more than 6m, installing diagonal draw bars on the I-steel, embedding double sleeves or double wall connecting pieces in tie bar nodes, and preventing the tie bars from colliding with the vertical rods when the tie bars are installed by taking the I-steel as the center and inclining 5cm to the left or right according to the I-steel anchor bolt embedded piece method;
step 10, after the I-steel is installed in place, vertical positioning steel bars are installed on the I-steel, and the purpose is to prevent safety accidents caused by relative sliding of the I-steel and the scaffold upright rod when the scaffold upright rod is directly placed on the I-steel;
step 11, after the vertical positioning steel bars on the upper portion of the I-shaped steel are installed, installing a scaffold on the upper portion of the I-shaped steel;
and 12, repeating the steps 3 to 5 in the installation of the scaffold, and when the height of the scaffold does not exceed 24m, combining an actual structure to install the I-steel of the secondary flower-basket scaffold, wherein the installation is the same as the construction process of the installation of the primary flower-basket scaffold.
Compared with the traditional construction method, the construction method has the following advantages:
1. when the I-steel of the flower basket scaffold is installed, the I-steel is accurately positioned and the end part of the vertical rod at the lower part plays a role in back jacking, and better safety guarantee is provided for installing the flower basket scaffold.
2. Because more accurate back of the top, for the use before the diagonal draw bar is not installed to the flower basket scaffold frame provides bigger safety guarantee.
3. After the lower scaffold is withdrawn from operation, the normal working performance of the upper flower basket scaffold can not be influenced in the dismantling process.
Drawings
Fig. 1 is a schematic structural view of the scaffold of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in fig. 1, a comprehensive scaffold construction method,
step 1, placing a base of a scaffold on a top plate of a concrete basement, so as to obtain the bearing capacity requirement of a flat, solid and firm foundation, ensure the settlement of the whole scaffold to meet the standard requirement, and avoid the scaffold from being overturned integrally due to insufficient bearing capacity of the foundation;
step 2, setting corresponding upright rod positions by combining drawings and preset installation positions of I-steel of the upper flower basket scaffold, so that the upright rod positions of the floor scaffold and the top-returning positions of the I-steel of the flower basket scaffold to be installed on the upper parts of the upright rods are located on the same vertical surface;
step 3, the joints of the vertical rods are staggered, the vertical rods with the distance of 1.5m and 1.0m are used for starting the rods at intervals, and the distance between the joints of the vertical rods is staggered by 0.5 m; each layer of each five spans is provided with a vertical diagonal rod longitudinally along the outer side of the frame body, and each layer of the end spans is provided with a vertical diagonal rod transversely, so that mutual twisting of the frame body in the use process of the frame body is avoided, and the safety and stability of the frame body are ensured;
step 4, the wall connecting piece is arranged from the longitudinal horizontal rod of the first step of the bottom layer, and the two forms are as follows: firstly, pre-burying steel pipes with the diameter of 48 multiplied by 3.6 on frame beams and plates, wherein the steel pipes are 350mm long, 150mm buried and 200mm exposed; secondly, under the condition that the wall connecting piece cannot be pre-buried, wall connecting points are arranged on the structural column in a hoop form for replacement; the wall connecting rod and the embedded rod are firmly fixed and locked through double fasteners, and the inspection torque is required to be more than 40 N.m; the arrangement of the wall connecting piece enables the frame body and the structure to form a whole to a great extent, and the anti-overturning capability of the frame body is enhanced again by means of the stability of the structure;
step 5, arranging two guardrails within the range of 2000mm in each step on the inner side of the outward upright stanchion on the operation layer of the scaffold paving plate, wherein each guardrail is 500mm, and a 200mm high foot baffle plate is arranged on the outer side of the safe dense mesh net and adopts a special perforated steel plate net; two guardrails are additionally arranged on the outer side of the topmost layer of the frame, and the height of the guardrails is 1.5 m; and the outer side is sealed by a perforated steel plate net; a handrail is arranged at the inner side of 1000mm and is connected by a common steel pipe;
step 6, when the height of the scaffold body of the floor scaffold is close to 24m, combining the height of the structural layer, taking a proper position to terminate the erection of the floor scaffold, and installing I-steel of the flower basket cantilever scaffold;
step 7, when the vertical upright stanchion of the floor scaffold is installed, the position of the upright stanchion is positioned according to the actual situation;
step 8, installing the cantilever I-shaped steel when the strength of the concrete reaches 5Mpa, and temporarily placing the cantilever beam on a lower scaffold if the strength of the concrete does not meet the requirement during installation so as to ensure that structural members cannot damage the concrete due to bending moment caused by the gravity borne by the I-shaped steel during installation of the cantilever beam; when the scaffold is installed, the bolt tightening torque needs to reach 117 N.m, the fastening of the high-strength bolt is an important control point for installing the cantilever beam, the fastening needs to be initially screwed by 50 percent, the same is also to ensure that the pre-embedded bolt in the concrete cannot be loosened due to too large torsion, and the lower part of the I-steel needs to be provided with the vertical upright rod back-jacking of the scaffold at the next layer; the re-twisting of 50 percent and the final twisting are finished within 24 hours in sequence; the cantilever steel beam is fastened by adopting a high-strength bolt, a square gasket 80 x 8mm is required to be adopted, and then a nut is screwed tightly;
step 9, when the scaffold on the upper part of the I-steel is installed to be not more than 6m, installing diagonal draw bars on the I-steel, embedding double sleeves or double wall connecting pieces in tie bar nodes, and preventing the tie bars from colliding with the vertical rods when the tie bars are installed by taking the I-steel as the center and inclining 5cm to the left or right according to the I-steel anchor bolt embedded piece method;
step 10, after the I-steel is installed in place, vertical positioning steel bars are installed on the I-steel, and the purpose is to prevent safety accidents caused by relative sliding of the I-steel and the scaffold upright rod when the scaffold upright rod is directly placed on the I-steel;
step 11, after the vertical positioning steel bars on the upper portion of the I-shaped steel are installed, installing a scaffold on the upper portion of the I-shaped steel;
and 12, repeating the steps 3 to 5 in the installation of the scaffold, and when the height of the scaffold does not exceed 24m, combining an actual structure to install the I-steel of the secondary flower-basket scaffold, wherein the installation is the same as the construction process of the installation of the primary flower-basket scaffold.
Compared with the traditional construction method, the construction method has the following advantages:
1. when the I-steel of the flower basket scaffold is installed, the I-steel is accurately positioned and the end part of the vertical rod at the lower part plays a role in back jacking, and better safety guarantee is provided for installing the flower basket scaffold.
2. Because more accurate back of the top, for the use before the diagonal draw bar is not installed to the flower basket scaffold frame provides bigger safety guarantee.
3. After the lower scaffold is withdrawn from operation, the normal working performance of the upper flower basket scaffold can not be influenced in the dismantling process.
Claims (1)
1. A construction method of a comprehensive scaffold is characterized by comprising the following steps:
step 1, placing a base of a scaffold on a top plate of a concrete basement, so as to obtain the bearing capacity requirement of a flat, solid and firm foundation, ensure the settlement of the whole scaffold to meet the standard requirement, and avoid the scaffold from being overturned integrally due to insufficient bearing capacity of the foundation;
step 2, setting corresponding upright rod positions by combining drawings and preset installation positions of I-steel of the upper flower basket scaffold, so that the upright rod positions of the floor scaffold and the top-returning positions of the I-steel of the flower basket scaffold to be installed on the upper parts of the upright rods are located on the same vertical surface;
step 3, the joints of the vertical rods are staggered, the vertical rods with the distance of 1.5m and 1.0m are used for starting the rods at intervals, and the distance between the joints of the vertical rods is staggered by 0.5 m; each layer of each five spans is provided with a vertical diagonal rod longitudinally along the outer side of the frame body, and each layer of the end spans is provided with a vertical diagonal rod transversely, so that mutual twisting of the frame body in the use process of the frame body is avoided, and the safety and stability of the frame body are ensured;
step 4, the wall connecting piece is arranged from the longitudinal horizontal rod of the first step of the bottom layer, and the two forms are as follows: firstly, pre-burying steel pipes with the diameter of 48 multiplied by 3.6 on frame beams and plates, wherein the steel pipes are 350mm long, 150mm buried and 200mm exposed; secondly, under the condition that the wall connecting piece cannot be pre-buried, wall connecting points are arranged on the structural column in a hoop form for replacement; the wall connecting rod and the embedded rod are firmly fixed and locked through double fasteners, and the inspection torque is required to be more than 40 N.m; the arrangement of the wall connecting piece enables the frame body and the structure to form a whole to a great extent, and the anti-overturning capability of the frame body is enhanced again by means of the stability of the structure;
step 5, arranging two guardrails within the range of 2000mm in each step on the inner side of the outward upright stanchion on the operation layer of the scaffold paving plate, wherein each guardrail is 500mm, and a 200mm high foot baffle plate is arranged on the outer side of the safe dense mesh net and adopts a special perforated steel plate net; two guardrails are additionally arranged on the outer side of the topmost layer of the frame, and the height of the guardrails is 1.5 m; and the outer side is sealed by a perforated steel plate net; a handrail is arranged at the inner side of 1000mm and is connected by a common steel pipe;
step 6, when the height of the scaffold body of the floor scaffold is close to 24m, combining the height of the structural layer, taking a proper position to terminate the erection of the floor scaffold, and installing I-steel of the flower basket cantilever scaffold;
step 7, when the vertical upright stanchion of the floor scaffold is installed, the position of the upright stanchion is positioned according to the actual situation;
step 8, installing the cantilever I-shaped steel when the strength of the concrete reaches 5Mpa, and temporarily placing the cantilever beam on a lower scaffold if the strength of the concrete does not meet the requirement during installation so as to ensure that structural members cannot damage the concrete due to bending moment caused by the gravity borne by the I-shaped steel during installation of the cantilever beam; when the scaffold is installed, the bolt tightening torque needs to reach 117 N.m, the fastening of the high-strength bolt is an important control point for installing the cantilever beam, the fastening needs to be initially screwed by 50 percent, the same is also to ensure that the pre-embedded bolt in the concrete cannot be loosened due to too large torsion, and the lower part of the I-steel needs to be provided with the vertical upright rod back-jacking of the scaffold at the next layer; the re-twisting of 50 percent and the final twisting are finished within 24 hours in sequence; the cantilever steel beam is fastened by adopting a high-strength bolt, a square gasket 80 x 8mm is required to be adopted, and then a nut is screwed tightly;
step 9, when the scaffold on the upper part of the I-steel is installed to be not more than 6m, installing diagonal draw bars on the I-steel, embedding double sleeves or double wall connecting pieces in tie bar nodes, and preventing the tie bars from colliding with the vertical rods when the tie bars are installed by taking the I-steel as the center and inclining 5cm to the left or right according to the I-steel anchor bolt embedded piece method;
step 10, after the I-steel is installed in place, vertical positioning steel bars are installed on the I-steel, and the purpose is to prevent safety accidents caused by relative sliding of the I-steel and the scaffold upright rod when the scaffold upright rod is directly placed on the I-steel;
step 11, after the vertical positioning steel bars on the upper portion of the I-shaped steel are installed, installing a scaffold on the upper portion of the I-shaped steel;
and 12, repeating the steps 3 to 5 in the installation of the scaffold, and when the height of the scaffold does not exceed 24m, combining an actual structure to install the I-steel of the secondary flower-basket scaffold, wherein the installation is the same as the construction process of the installation of the primary flower-basket scaffold.
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|---|---|---|---|
| CN202111278040.9A CN113958112A (en) | 2021-10-30 | 2021-10-30 | Comprehensive scaffold construction method |
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|---|---|---|---|
| CN202111278040.9A CN113958112A (en) | 2021-10-30 | 2021-10-30 | Comprehensive scaffold construction method |
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| CN113958112A true CN113958112A (en) | 2022-01-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753610A (en) * | 2021-10-30 | 2022-07-15 | 上海宝冶集团有限公司 | Construction method of basket type overhanging scaffold |
| CN115627912A (en) * | 2022-09-19 | 2023-01-20 | 上海宝冶集团有限公司 | Construction method of assembled externally-mounted flower basket type overhanging scaffold |
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2021
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| CN202706508U (en) * | 2012-06-25 | 2013-01-30 | 南通四建集团有限公司 | Overhanging strength bearing steel beam construction member of scaffold |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753610A (en) * | 2021-10-30 | 2022-07-15 | 上海宝冶集团有限公司 | Construction method of basket type overhanging scaffold |
| CN115627912A (en) * | 2022-09-19 | 2023-01-20 | 上海宝冶集团有限公司 | Construction method of assembled externally-mounted flower basket type overhanging scaffold |
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