CN115012660A - Construction method of basket pull rod type overhanging scaffold - Google Patents

Abstract

The invention provides a construction method of a flower basket pull rod type cantilevered scaffold, and relates to the technical field of construction. A flower basket pull rod type cantilevered scaffolding construction method, comprising pre-embedding, installation of double-ended screws, installation of cantilever beams, scaffolding erection, pre-embedding and installation of upper end connecting pull rings of inclined rods, scaffold acceptance and inspection, scaffold removal, and removal of overhangs The steps such as lifting the beam are carried out, the construction speed is fast, the construction period is short, and the cantilever beam and the cantilever frame are more stable, which can not only improve the safety performance of the construction, reduce the safety risk, but also reduce the construction cost to a certain extent.

Description

Construction method of flower basket pull rod type cantilever scaffold

technical field

The invention relates to the technical field of construction, in particular to a construction method of a flower basket pull rod type cantilevered scaffold.

Background technique

In recent years, with the rapid development of my country's economy, my country's construction engineering industry has made great progress, and the number and scale of various construction projects in cities have increased significantly; An important link, its construction technology directly affects the progress, safety and cost of the project.

During the construction of the existing cantilever frame, the construction speed is slow and the period is long, resulting in high construction cost. This construction method needs to be optimized urgently.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a construction method of a flower basket and pull rod type cantilever scaffold, which has the advantages of fast construction speed, short construction period, more stable erection of cantilever beams and cantilever frames, ensuring that the safety performance of construction can be improved, the safety risks can be reduced, and the It can reduce the construction cost to a certain extent.

Embodiments of the present invention are implemented as follows:

An embodiment of the present application provides a construction method for a flower basket and pull rod type cantilevered scaffolding, including the following steps: S1, pre-embedding: using the plan layout of the cantilever beam as a navigation, corresponding to each building, the outer formwork is assembled and the reinforcing bars are arranged, and Pre-buried before pouring concrete, and each cantilever beam is provided with a round hole on the outer formwork, and is temporarily fixed with a special screw;

S2. Install the double-ended screw: after the concrete strength meets the construction requirements, remove the outer panel, twist out the mounting screw, leak the embedded parts, and install the double-ended screw;

S3. Installation of cantilever beams: According to the installation position of the embedded parts, according to the model marked on the drawing, find the cantilever beams of the corresponding model, and arrange them in each part of the cantilever layer one by one, and the cantilever beams of the same height are parallel to each other and equally spaced distributed;

S4. Scaffolding erection: After the concrete strength meets the construction requirements, an outer frame consisting of vertical poles, horizontal horizontal poles, vertical horizontal poles, bamboo scaffolding boards, scissor braces and small horizontal poles is erected. When the concrete strength of the upper layer of the cantilever layer meets the requirements Then, assemble the upper pull rod and adjust the inclined pull rod to the stress state, and then set up the scaffolding;

S5. Pre-embedding and installation of the connecting pull ring at the upper end of the stay rod: Before pouring the concrete on the upper layer of the cantilever layer, arrange the pre-embedded parts of the pull joint at the upper end of the stay rod. After the concrete strength meets the construction requirements, remove the outer formwork. Twist the binaural pulls into the embedded parts to connect, and connect the diagonal pull rods well, and adjust to the stress state at the same time;

S6. Acceptance and inspection of scaffolding: After the installation of steel beams is completed and the scaffolding is erected to the height requirement, check the installation quality of steel beams, verticality of columns, spacing, height difference of longitudinal horizontal rods, deviation of overhanging length of horizontal horizontal rods and fasteners The installation, technical requirements and allowable deviations of the scaffolds should be within the allowable range of the regulations, and when the scaffolding is used, the scaffolding, steel beams, etc. should be inspected periodically and regularly according to the specifications;

S7. Scaffolding removal: When removing the scaffolding, the rubbish and sundries on the scaffolding should be removed first, and the scaffolding should be removed according to the rules of top-down, first-placer first and first-placer then dismantling;

S8. Remove the cantilever beam: remove the special place first, then remove the window or balcony, and then remove the embedded bolt assembly.

In some embodiments of the present invention, in the above step S1, when installing the embedded parts, it is necessary to ensure that the contact surfaces of the embedded parts and the formwork are in close contact with each other, and all the embedded parts should be set with the concrete pouring surface 10cm down to 20cm.

In some embodiments of the present invention, in the above step S2, when the strength of the concrete should reach 5MPa, the installation of the double-ended screw is started.

In some embodiments of the present invention, in the above step S2, after the double-ended screw is installed, its exposed length is less than or equal to 6 cm.

In some embodiments of the present invention, in the above step S4, several vertical bars are set up on each cantilever beam at equal intervals, and the vertical bars on each cantilever beam form a row; the longitudinal horizontal bars are parallel to the cantilever beam, and Perpendicular to each row of vertical poles, several layers are evenly distributed along each row of vertical poles, and fixed together with each row of vertical poles; the large horizontal pole is perpendicular to the cantilever beam and vertical to the longitudinal horizontal pole, and is equally spaced along each row of vertical poles Several layers are distributed and fixed with each column of vertical bars. The small horizontal bar is arranged between the vertical bar and the large horizontal bar; the scaffolding board is laid perpendicular to the longitudinal horizontal bar direction, and the butt is used for tiling; the scaffolding board is along the length direction of the scaffolding board layout.

In some embodiments of the present invention, the scaffolding board is a steel fence scaffolding board, and the rubber baffle board is a stamped steel toeboard.

In some embodiments of the present invention, in the above step S5, the outer frame is not erected until the concrete strength reaches 12 MPa.

In some embodiments of the present invention, in the above step S5, before the scaffold is erected at the free end of the cantilever beam, the lower support rod is installed and adjusted to a stress state.

In some embodiments of the present invention, in the above step S7, the same part of the scaffold is dismantled in the first order of railing, bamboo scaffolding board, scissor brace, large horizontal bar, small horizontal bar, and vertical bar.

In some embodiments of the present invention, in the above step S8, the bolt holes of the pre-embedded bolts are treated with a plugging agent for plugging.

Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

1. In step S1, the construction is carried out with the plan of the cantilever beam as the navigation, and the embedded parts are arranged in advance, so that the subsequent installation of the cantilever beam is faster and more convenient.

2. In the steps S1 and S2, the use of the installation screw ensures the safe opening of the pre-buried holes on the one hand, and on the other hand, it also ensures the installation strength of the concrete during the subsequent installation of the double-ended screw, and then ensures the installation strength of the double-ended screw, so that the The fixed strength of the subsequent cantilever beam is guaranteed.

3. In step S5, after the concrete pouring of the upper layer of the cantilevered layer of the cable-stayed rods is completed, the cable-stayed rods are fixed and adjusted to a stress state, so that the cantilever layer of this layer is more stable, and the upper layer of the cantilever layer is installed. More stable, to ensure the life and health of the installer.

4. In step S7, the scaffolding is dismantled according to the rules of top to bottom, first dismantling and first dismantling, so that the dismantling speed of the scaffolding is faster and safer, and the dismantling efficiency is high.

5. In step S8, when dismantling the cantilever beam, first dismantle the place with a special location and then dismantle the place with a window or balcony. According to this dismantling sequence, the dismantling speed is faster and the damage to the wall is smaller. Remove the embedded bolt assembly to avoid subsequent damage to the wall.

To sum up, this construction method has the advantages of fast construction speed, short construction period, and more stable erection of cantilever beams and cantilever frames, which ensures that it can not only improve the safety performance of construction, reduce safety risks, but also reduce construction costs to a certain extent.

Detailed ways

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the appearance of terms such as "horizontal", "vertical", "overhanging" does not mean that components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the embodiments of the present invention, "a plurality of" means at least two.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

A construction method of a flower basket pull rod type cantilevered scaffolding, the steps of which are as follows:

S1, pre-embedded

1): Take the plan of the cantilever beam as the navigation, the outer formwork of each building is assembled and the reinforcement is arranged, and it is pre-buried before pouring the concrete.

的圆孔，再通过配套专用的螺杆临时固定，确保混凝土浇筑过程中预埋件不会产生偏位；预埋件安装时，需确保预埋件与模板接触面的无缝隙紧贴，防止浇筑时混凝土浆水渗入到预埋件的管内部导致预埋件失效；预埋件安装完毕后，混凝土浇筑时严禁震动棒直接与预埋件接触，以确保预埋件不被损坏或发生偏移，安装螺杆使用完毕后(无论是在悬挑层或上拉层使用完毕后)，均应及时回收、保管好，以备下挑安装预埋件时使用(安装螺杆，每栋楼仅需配一挑，需注意保管)。2): For each cantilever beam, open two on the outer formwork

The round hole is fixed temporarily by a special screw to ensure that the embedded parts will not be offset during the concrete pouring process; when the embedded parts are installed, it is necessary to ensure that the contact surfaces of the embedded parts and the formwork are in close contact with each other to prevent pouring. When the concrete slurry penetrates into the pipe of the embedded parts, the embedded parts fail; after the embedded parts are installed, it is strictly forbidden for the vibrating rod to directly contact the embedded parts during concrete pouring to ensure that the embedded parts are not damaged or offset. , After the installation screw is used (whether it is used in the cantilever layer or the upper pull layer), it should be recycled and kept in time for use when installing the embedded parts (for the installation of the screw, each building only needs to be equipped with One pick, need to pay attention to storage).

3): In order to ensure the overall appearance of the new cantilevered support frame after installation, the settings of the three types of embedded parts: the upper tie rod, the lower support rod and the cantilever beam should be set at the same relative height as possible. The use of embedded parts is safe to ensure that the force of the embedded parts is maximized. The location of all embedded parts should be set within the range of 10cm to 20cm below the concrete pouring surface. Make sure that the two embedded parts of the same cantilever beam are on the same horizontal line. When pre-embedding for the first time, it is necessary to pre-embed 2 * 3 groups, a total of 6 embedded parts, for later on-site pull-out tests. when used.

S2, install the double-ended screw

1): After the concrete strength reaches 5MPa or the strength required by relevant requirements, start to install the double-headed screw, twist out the installation screw, remove the outer formwork, expose the embedded parts, and install the high-strength double-headed S8.8 grade, M20*225mm long screw.

2): When installing the double-ended screw, although it is impossible to see whether the inner end is firmly connected with the square nut in the embedded part, the exposed length of the double-ended screw can be observed to determine whether it is securely connected. When the exposed length is less than or equal to 6cm , for safety.

3): When installing the double-ended screw, considering that the strength of the concrete has not kept up, the torque should not be too large, so as not to cause the beam wall panel on the opposite side to rupture, ensure the strength of the wall panel, and at the same time ensure the beauty of the wall panel.

S3, install the cantilever beam

1): According to the installation position of the embedded parts, according to the model marked on the drawing, find the corresponding type of cantilever beams, and arrange them in each part of the cantilever layer one by one, and the cantilever beams of the same height are parallel to each other, equally spaced, and suspended. The distance between the cantilever beams should be set according to the vertical distance of the cantilever frame body, so as to ensure the overall strength and hardness of the cantilever frame.

2): Steel wire ropes or steel tie rods should be installed at the outer end of the cantilever beam to be tied with the superstructure structure, so as to ensure the stability of the cantilever beam and further ensure the life and health of the construction personnel.

S4, scaffolding erection

1): After the concrete strength reaches 12MPa or the strength of relevant requirements, the outer frame can be erected. Specifically, several vertical poles are set up at equal intervals on each cantilever beam, and the vertical poles on each cantilever beam form a row; The longitudinal horizontal rod is parallel to the cantilever beam and perpendicular to each row of vertical rods, and several layers are evenly distributed along each row of vertical rods and fixed with each row of vertical rods; the large horizontal rod is perpendicular to the cantilevered beam and horizontal to the longitudinal direction The poles are vertical, and several layers are distributed at equal intervals along each column of poles, and are fixed with each column of poles. The small crossbar is set between the vertical pole and the large horizontal pole. A small crossbar must be set up and fastened under the large crossbar with right-angle fasteners; the scaffolding board is laid perpendicular to the direction of the vertical horizontal rod, and the butt is used for tiling, and the four corners are fixed in the longitudinal direction with 16-gauge galvanized iron wire. On the horizontal rod, the scaffolding board should be fully covered and stably laid; the scaffolding board should be laid along the length of the scaffolding board. Specifically, the scaffolding board should be placed on the construction operation layer by the wall. The distance between the scaffolding board and the wall should not exceed 15cm, and the horizontal The length of the rod should not be greater than 150mm; the scaffolding board should be laid along the long direction, and its end should extend 10-20cm horizontally from the resting point, and should be placed on top of each other.

Specifically, steel fence scaffolding is used for the scaffolding board, and stamping steel fendering board is used for the footing board, and the strength and hardness are relatively stable.

Specifically, it is strictly forbidden to stack heavy materials on the cantilever beam or the steel pipe frame during the process of erecting the scaffolding, and it is strictly forbidden to hoist any materials on the tower crane during this process.

Specifically, a scissor brace structure should be provided on the side of the cantilever layer. The scissor brace structure is the prior art and is used on the cantilever frame. Specifically, when the height of the cantilever frame is less than 24m, the scissor braces are arranged at intervals.

2): When there is no condition for connecting the "up rod", the scaffold can be erected to a maximum height of 10 meters. When the concrete strength of the upper layer of the cantilever layer meets the requirements, the upper rod should be assembled as soon as possible, and the inclined rod should be adjusted in time to After the force is applied, the scaffolding can be set up again.

3): Before erecting the scaffolding at the free end of the cantilever beam, the lower support rod should be installed and adjusted to the stress state in advance to ensure the safety of the construction workers.

S5. Pre-embedding and installation of the connecting pull ring at the upper end of the tie rod

1) Before the concrete of the upper layer of the cantilever layer is poured, arrange the embedded parts (150mm long) of the pull-joint at the upper end of the tie rod. After the outer formwork is removed and the concrete strength reaches the specified requirements (usually 72 hours after the concrete is poured) ), start to twist the "double ear pull ring" into the embedded part to connect, and connect the diagonal rods, adjust to the stress state at the same time, and finally set the outer frame up to 20 meters (within) to ensure that the outer frame Safety of staff during erection.

S6, scaffold acceptance and inspection

1): After the steel beams are installed and the scaffolding is erected to the height requirements, the safety director will lead the inspection and acceptance, mainly to check the installation quality of the steel beams, the verticality of the columns, the spacing, the height difference of the longitudinal horizontal rods, and the outside of the horizontal horizontal rods. Elongation deviation and installation of fasteners, technical requirements and allowable deviations should be within the allowable range of regulations; the project department inspects and accepts, and fills in the acceptance form, and the installation and use can only be carried out if they are qualified; when scaffolding is used, it should be set according to the specifications Scaffolding, steel beams, etc. shall be inspected periodically and periodically.

S7. Remove the cantilever beam

1): When dismantling scaffolding at high altitude, fences should be set up around the operation area and at the entrance and exit, and obvious signs and warning signs should be added. Non-operators are strictly prohibited from entering the operation area. When transporting materials vertically, there should be a unified command and unified signal to avoid Outsiders were injured.

2): Immediately dismantle the scaffolding after use. Before dismantling the scaffolding, the following work should be done: Before the scaffolding is dismantled, its frame body should be checked for safety to ensure that there are no serious hidden dangers. If there are safety hazards, the scaffolding body should be trimmed and strengthened first , When removing the connecting wall parts, first connect the walls to the windows and balconies to ensure that the scaffolding is not dangerous during the dismantling process; Quantity, horizontal transportation on scaffolding, personnel organization, method and terminology of command and liaison, safety measures and warning areas for demolition, construction technology disclosure and safety technology disclosure to construction personnel.

3): When dismantling the scaffolding, the rubbish and sundries on the scaffolding should be removed first, and it is strictly forbidden to throw downwards at a high altitude during the removal. Zhongyun Xia; Strictly abide by the dismantling sequence, from top to bottom, the one who rides behind will be dismantled first, and the one who rides first will be dismantled later. The dismantling sequence of the same part is: railing → bamboo scaffolding board → scissors brace → large horizontal bar → small horizontal bar → vertical The rods make the dismantling of the scaffolding faster and safer, and the dismantling efficiency is high.

4): The dismantling of the outer scaffolding is generally strictly forbidden to operate at the same time in the vertical direction, so other vertical work arrangements should be made in advance; when the scaffolding is dismantled, the lower entrance and exit must be stopped. Obvious stop signs and fences should be set up at the entrance and exit, and the devices here must be set on both sides.

5): Around the dismantled scaffolding, a warning with the words "No Entry" is clearly marked in the falling area, and there is a special person to monitor to ensure that no other personnel are included when the scaffolding is dismantled; for the dismantling of scaffolding steel pipe fasteners and their vertical transportation equipment Use pulleys and ropes to transport or cooperate with tower cranes. It is strictly forbidden to throw littering, and the operators and their use should be disclosed. Contact terms and methods should be specified, and responsibilities should be specified to ensure that the vertical transportation equipment can operate safely when the scaffolding is dismantled; After the scaffolding steel pipes, fasteners and other materials are transported to the ground, they should be cleaned up in time, and the qualified ones should be distinguished from those that need to be refurbished and reused and those that are scrapped. They should be stacked according to specifications. for later use.

6): During the dismantling of the scaffolding of this project, the operation should be stopped in case of strong wind, heavy rain and heavy fog; the operator should fasten the seat belt and wear soft-soled anti-skid shoes during the dismantling; It should be clearly explained in the security technical disclosure.

S8. Remove the cantilever beam

1): When dismantling the cantilever beam at the end, follow the steps from difficult to easy to dismantle, first dismantle special places (such as large corners, long shear walls, lighting wells, etc.), and then dismantle the windows with windows Or at the balcony, follow this dismantling sequence to make dismantling faster and less damage to the wall.

2): After the cantilever beam is removed, the embedded bolt components are removed, and the bolt holes are treated with foaming agent and expanded fine stone concrete to ensure the beauty of the wall on the one hand, and increase the strength and hardness of the wall on the other hand Guaranteed.

In addition, the built cantilever frame should be managed safely to ensure the safety of construction workers, including the following:

1): Establish an effective external frame safety management organization and a regular inspection and review system. The erection and dismantling and maintenance of the scaffolding of this project shall be under the unified command and coordinated management of the safety manager of the project department, and the safety officer of the project department shall be responsible for daily maintenance and tracking management.

2): Personnel requirements: The personnel engaged in the erection of the frame body should be professional frame workers, and have obtained the special type of operation certificate issued by the labor department. Scaffolders should undergo regular physical examinations, and those with symptoms that are not suitable for working at heights are not allowed to work. Safety helmets, safety belts and non-slip shoes must be worn when working on the shelves.

3): Strictly control the use load during the use stage, and must not overload. The weight of the practical construction load personnel, materials and equipment on each 1m2 shelf surface of the operation layer shall not exceed the following specified values and construction design values. The standard value of the construction load (weight of personnel, materials and appliances on the operation layer) is: 3KN/m2, At the same time, the operation layer shall not exceed one layer; it is strictly forbidden to stack or hang heavy objects on the scaffolding, and shall not fix the cable wind rope, the conveying pipe for pumping concrete, etc. on the scaffolding. It is strictly forbidden to attach mechanical equipment, rocker handle bars, cantilever platforms, build (hang) unloading troughs (buckets), etc. to the outer wall scaffolding; Support; the maximum working height of the operator on the rack is based on the normal operation. It is forbidden to add utensils to the footboard, or a single piece of scaffolding to increase the operating height. It is strictly forbidden for the personnel on the shelf to run, retreat or retreat on the shelf.

4): During the operation, it is forbidden to arbitrarily remove the basic components, integral rods, connecting fasteners or connecting wall parts of the scaffolding. When it is necessary to temporarily dismantle due to the operation, it must be approved by the supervisor, take corresponding remedial measures, and restore it in time after the operation. It is strictly forbidden to dismantle the connecting wall rod and the main connection point steel pipe during the use of the scaffold; workers working on the scaffold should pay attention to Personal safety protection and the safety of others, avoid collisions, accidents and falling objects, it is strictly forbidden to play and rest in unsafe places such as playing on the shelves and sitting on the railings; before workers work on the shelves, each team first checks whether there are any unsafe factors for safe operation If it exists, it can be operated only after it has been eliminated and solved. In the event of abnormal and dangerous situations, the personnel on the shelf should be notified immediately to evacuate. Construction and operation on the scaffolding should be stopped in case of strong winds and fog, rain and snow weather of level 6 and above.

5): After each rack operation is completed, excess materials and items must be moved indoors. Workers should clean up the rack surface, stack the materials neatly, and clean up the garbage before finishing work. In any case, it is strictly forbidden to throw materials down on the rack. Items and dumping garbage; before the shelf has not been inspected and accepted, it is strictly forbidden for other personnel to climb except the shelf worker. After the acceptance, no one can dismantle and modify it. In the case of strong winds and fog, rain and snow weather of level 6 and above, the erection and dismantling of scaffolding shall be stopped. After heavy wind and rain, the person in charge of construction should organize relevant personnel to inspect the shelves in time.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a flower basket pull rod type cantilever scaffolding construction method, is characterized in that: comprise the steps: S1. Pre-embedded: Take the plan of the cantilever beam as the navigation, the outer formwork of each building is assembled and the reinforcement is arranged, and it is pre-buried before pouring the concrete, and each cantilever beam is opened on the outer formwork. round hole, and temporarily fixed with a special screw; S2. Install the double-ended screw: after the concrete strength meets the construction requirements, remove the outer panel, twist out the mounting screw, leak the embedded parts, and install the double-ended screw; S3. Installation of cantilever beams: According to the installation position of the embedded parts, according to the model marked on the drawing, find the cantilever beams of the corresponding model, and arrange them in each part of the cantilever layer one by one, and the cantilever beams of the same height are parallel to each other and equally spaced distributed; S4. Scaffolding erection: After the concrete strength meets the construction requirements, an outer frame consisting of vertical poles, horizontal horizontal poles, vertical horizontal poles, bamboo scaffolding boards, scissor braces and small horizontal poles is erected. When the concrete strength of the upper layer of the cantilever layer meets the requirements Then, assemble the upper pull rod and adjust the inclined pull rod to the stress state, and then set up the scaffolding; S5. Pre-embedding and installation of the connecting pull ring at the upper end of the stay rod: Before pouring the concrete on the upper layer of the cantilever layer, arrange the pre-embedded parts of the pull joint at the upper end of the stay rod. After the concrete strength meets the construction requirements, remove the outer formwork. Twist the binaural pulls into the embedded parts to connect, and connect the diagonal pull rods well, and adjust to the stress state at the same time; S6. Acceptance and inspection of scaffolding: After the installation of steel beams is completed and the scaffolding is erected to the height requirement, check the installation quality of steel beams, verticality of columns, spacing, height difference of longitudinal horizontal rods, deviation of overhanging length of horizontal horizontal rods and fasteners The installation, technical requirements and allowable deviations of the scaffolds should be within the allowable range of the regulations, and when the scaffolding is used, the scaffolding, steel beams, etc. should be inspected periodically and regularly according to the specifications; S7. Scaffolding removal: When removing the scaffolding, the rubbish and sundries on the scaffolding should be removed first, and the scaffolding should be removed according to the rules of top-down, first-placer first and first-placer then dismantling; S8. Remove the cantilever beam: remove the special place first, then remove the window or balcony, and then remove the embedded bolt assembly. 2. The construction method of a flower basket and pull rod type cantilever scaffold according to claim 1, characterized in that: in the step S1, when the embedded parts are installed, it is necessary to ensure that the embedded parts and the formwork contact surface are closely adhered without gaps , and all embedded parts should be set 10cm to 20cm below the concrete pouring surface. 3. The construction method of a flower basket and pull rod type cantilevered scaffolding according to claim 1, characterized in that: in the step S2, the installation of the double-ended screw is started only when the strength of the concrete should reach 5MPa. 4 . The construction method of a flower basket pull rod type cantilever scaffold according to claim 1 , wherein in the step S2 , after the double-ended screw is installed, the exposed length is less than or equal to 6 cm. 5 . 5. The construction method of a flower basket pull rod type cantilever scaffold according to claim 1, wherein in the step S4, several vertical poles are set up at equal intervals on each cantilever beam, and the The vertical rods form a row; the longitudinal horizontal rods are parallel to the cantilever beams and perpendicular to each row of vertical rods, and several layers are evenly distributed along each row of vertical rods, and are fixed with each row of vertical rods; the large horizontal rod and the cantilevered beams Vertical and vertical to the vertical horizontal bar, several layers are distributed at equal intervals along each column of vertical bars, and are fixed with each column of vertical bars. The small horizontal bar is set between the vertical bar and the large horizontal bar; The direction of the laying, and the use of butt tiling; the scaffolding board is laid along the length of the scaffolding board. 6 . The construction method of a flower basket and pull rod type cantilevered scaffolding according to claim 5 , wherein the scaffolding board adopts a steel fence scaffolding board, and the rubber baffle board adopts a stamping steel toeboard. 7 . 7 . The construction method of a flower basket and pull rod type cantilever scaffold according to claim 1 , wherein in the step S5 , the outer frame is not erected until the concrete strength reaches 12 MPa. 8 . 8. The construction method of a flower basket and pull rod type cantilevered scaffolding according to claim 1, characterized in that: in the step S5, before the scaffolding is erected at the free end of the cantilever beam, the lower support rod is installed and adjusted to receive force state. 9. The construction method of a flower basket and pull rod type cantilevered scaffolding according to claim 1, characterized in that: in the step S7, the same part of the scaffolding is arranged according to railings, bamboo scaffolding boards, scissor braces, large cross bars, small cross bars , Remove the poles in the first order. 10 . The construction method of a flower basket tie-rod cantilever scaffold according to claim 1 , wherein in the step S8 , the bolt holes of the pre-embedded bolts are plugged with a plugging agent. 11 .