Hanging basket is the main equipment in cantilever construction, which can be divided into truss type, cable-stayed type, steel structure type and mixed type according to structural forms. Let me share with you the safety technical measures for hanging basket construction. Welcome to read and browse.

Hanging basket assembly should pay attention to the following points:

1, in order to ensure the safety of hanging basket construction, hanging basket construction class should be equipped. Personnel should choose personnel with experience in hanging basket construction, strong safety awareness and strong sense of responsibility to carry out hanging basket construction, and be equipped with commanders with construction experience, flexible mind and certain command ability to conduct operation and command.

2. Before using the hanging basket, it should be debugged and assembled. After debugging and assembly, carefully check the connection firmness of each part, whether there is any crack in the weld of each joint, whether the bar will be deformed, whether the connecting fittings are complete and whether the dimensions meet the design requirements, and rectify in time when problems are found.

3, machines and equipment preparation and inspection

(1) jack: before use, the size of the jack used in each part should be prepared according to the technical requirements, and it should be debugged and checked. Unqualified jacks cannot be used.

② Chain reversal: Before use, carefully check whether each link of chain reversal is out of welding, the teeth of chain reversal should be flexible, and the tonnage of lifting load should meet the design requirements. It is forbidden to use small-tonnage chain-shifting instead of large-tonnage chain-shifting, so as to ensure the safety in the construction process. Safe use of wire rope: the thickness of wire rope used in various parts of the hanging basket should be prepared in strict accordance with the design requirements, and unqualified wire rope should not be used at will. The lifting rings at both ends of the steel wire rope should be threaded, and the U-shaped clip is forbidden to be used as the lifting ring in important parts to prevent the rope head from slipping during use and causing safety accidents.

Safety precautions for hanging basket assembly:

(1) During the hanging basket assembly, the construction personnel must wear safety helmets and safety belts, and the upper and lower floors should be protected at the same time. It is forbidden to work straight up and down to prevent falling objects from hurting people.

(2) In the process of hoisting, there is a special person to command, and irrelevant personnel are prohibited from entering the hoisting operation area.

(3) When the hanging basket is assembled, the hoisting of all parts shall be subject to the unified command of the commander, and it is strictly prohibited to blindly act recklessly to prevent accidents.

Safety technical requirements for hanging basket construction:

1. After the hanging basket is assembled on blocks 0# and 1#, the static load test shall be carried out. At the same time, a special person should carefully observe the static load test, and the concrete construction can only be carried out after the changes of various parts meet the safety technical requirements.

2. When the hanging basket moves: two groups of hanging baskets on the same T-shaped structure must move synchronously and symmetrically, and the displacement difference shall not be greater than1000px; When moving, a safety chain should be set at the back of the hanging basket, and the moving speed should not exceed 250px/min. Before the hanging basket starts to walk, the personnel in the hanging basket must be evacuated before it can be carried out. It is forbidden to stand or sit on the walking basket.

3. The bottom plate and web reinforcement of each cantilever beam section are hoisted in blocks, concrete is poured, and the hanging basket is removed to ensure that the unbalanced weight on both sides of the T-shaped structure is not more than 5T.

4, hanging basket template elevation adjustment, should be slow, at the same time should have a unified command. Before the hanging basket template swings, it is necessary to check the position of the hanging basket in detail, whether the back-end anchorage, fixation and suspender are installed firmly, and whether the personnel are evacuated. Do not swing until you are sure it is safe.

5, hanging basket construction power supply, lighting wires must be set up by an electrician, and often strengthen inspection, because hanging basket construction iron is more, in order to eliminate the hidden danger of leakage accidents.

6. In the process of suspension grouting construction, special personnel must be arranged to regularly check the use of key stress bars such as hanging basket anchor 55555555555 fixed screw and front and rear suspenders, strengthen the maintenance of machines and equipment such as jacks, chains and steel ropes, and handle problems in time when found.

7. With the extension of cantilever, especially in summer, ventilation and cooling lighting facilities should be installed in time to improve the working environment of construction personnel.

8. Sulfur and mortar in temporary support will emit a small amount of harmful pungent smell during electric melting, and construction personnel should wear masks to prevent it.

When using truss hanging basket for construction, the following provisions shall be observed:

1) Before construction, organize relevant personnel to make safety technical disclosure and formulate safety technical measures. After the hanging basket is assembled, it is necessary to conduct a comprehensive inspection and do a static load test;

2) When Block 0 is constructed on the pier and the cable-stayed bracket is used as the construction platform, safety protection facilities shall be set at the edge of the platform. The sidewalk slabs erected between the cable-stayed support platforms on both sides of the pier must be firmly connected.

Part of the platform shall be reserved for curing and other operations after the formwork removal of Block Zero;

3) The machinery and equipment used (such as jack, pulley, chain block, wire rope, etc.). ) should be checked, is not in conformity with the provisions is strictly prohibited;

4) Check whether the position and firmness of embedded parts and cable-stayed steel belts of pier shaft meet the design requirements;

5) In case of strong wind and bad weather, the operation should be stopped;

Hanging basket construction safety:

1. When using the hanging basket, always check whether the rear anchor rod, jack, chain block, tensioning platform and safety rope are in good condition and reliable.

When the elevation of the bottom die is adjusted, it should be commanded by a special person. Workers should lay solid scaffolding under their feet and fasten their seat belts;

2. During the installation, walking and use of the hanging basket, the load should be strictly controlled to prevent excessive impact and vibration. If additional facilities (such as rain shelter, vertical derrick, cold shelter, etc. ), shall not damage the hanging basket structure, shall not change its stress form;

3. Hanging basket assembly and cantilever assembly are dangerous. When working in high places and deep waters, a safety net should be set up, scaffolding should be spread all over, and temporary guardrails should be set up. Operators must wear safety protection articles and be equipped with life-saving facilities according to regulations;

4. When the water tank is used as a counterweight, its position and water addition should meet the design requirements. Water supply and drainage facilities and methods should be reliable. In the process of construction, regular safety inspections should be conducted for the above situations;

5. Before the bottom die swings, carefully check whether the hanging basket position, rear end weight and rear hanger installation meet the requirements. The two suspenders of the upper beam should be connected with the lower beam of the bottom die before swinging;

6. When the hanging basket is walking, it should be carried out slowly, and the speed should be controlled within 0. 1m/min. Behind the hanging basket, a set of sliding ropes is set to ensure safety. The slideway should be laid flat, straight and without deviation, and observed at any time, and handled in time when problems are found.

7. When pouring concrete, the rear end of the hanging basket truss should be anchored on the completed beam section, and the weight should be balanced with the weight of the poured concrete. When the hanging basket truss is walking and pouring concrete, its stability coefficient should not be less than1.5;

8. When pouring concrete in the closed section, the cantilever end should be pre-pressurized, and when the load is gradually withdrawn during the pouring process, it should be carried out from top to bottom. When withdrawing ballast, attention should be paid to prevent rolling;

9. The concrete contact surface of box girder should be chiseled with safety protection facilities, and the hammer handle used should be firm. There should be a certain safe distance between operators.

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