Detailed scheme of concrete floor demolition construction

Construction scheme of concrete structure demolition in a hotel

catalogue

I. Overview of the project-.

Second, the main idea of the demolition plan-(6544.

Three. Preparation before construction.

Four. Construction organization and implementation-

1, organization-.

2. Main construction methods and matters needing attention.

3. Labor distribution.

4, time limit for a project guarantee measures-.

5. Project quality assurance.

6. Safety organization and measures.

7. Environmental protection measures.

8. Fire prevention measures.

9. Safety requirements.

10, civilization demands-.

1 1, construction interference solution-.

I. Overview of the Project:

* * * * Hotel, which plans to demolish some interior walls and floors, is located in Xiangjiang Road, Development Zone. The demolished buildings are all residential areas, surrounded by residential buildings. The building is a frame-shear structure, and some brick infilled walls, concrete shear walls and some cast-in-place concrete floors need to be removed. The building has 22 floors, and the amount of work to be demolished on each floor is about 60 cubic meters.

Because the building is located in a residential area, how to ensure the normal life of the surrounding residents, reduce the construction noise and ensure environmental pollution is the focus of this demolition project, and it is the key to complete the demolition work quickly under the condition of ensuring safety. The surrounding environment of this demolition project is complex. After studying the height of the building and the surrounding environment, the specific conception and implementation plan are formulated as follows.

Second, the leading idea of the demolition plan:

1. In order to ensure the normal traffic of passing vehicles and pedestrians in residential areas around the building during the demolition construction, a cordon is set around the building, and special personnel are arranged to be on duty to eliminate potential safety hazards during the demolition construction.

2. If there are any steel bars in the demolition process, they should be cut off by gas welding before demolition. Demolished reinforced concrete blocks are crushed for the second time to facilitate transshipment.

3. In order to ensure that the manual demolition construction has no dust pollution, water spraying is adopted to reduce dust.

4. In order to avoid the influence of demolition noise on residents around the community and avoid night construction.

5. In the design, a vertical passage needs to be added in the building, and a hole needs to be made in the floor, which is used as a passage for dropping garbage downward. It is planned to take every fifth floor as a demolition construction section, that is, when the floor is demolished, every fourth floor will be left as a conversion layer for receiving and transporting garbage, and the garbage will be transported downstairs in batches.

Third, the preparation before construction:

1. Mechanical equipment preparation:

Construction elevator, diamond, pneumatic pick, electric welding machine, gas welding equipment, etc.

2. Contractor's responsibilities

(1) Make detailed written technical disclosure to the demolition operation team, and cut off or block all water, electricity and communication lines and pipelines leading to the demolition area;

(2) After the demolition ZuoYeDui enters the site, the contractor's indirect personnel shall not enter the site to prevent safety accidents;

(3) Before the commencement of construction, assist in handling relevant procedures such as urban construction, city appearance, sanitation and transportation. And send representatives to the site to help solve the problem of disturbing the people on site and cooperate with the demolition ZuoYeDui for demolition construction;

(4) In order to reduce dust pollution, water spraying and water spraying are adopted to reduce dust, and relevant safety warnings and precautions are made;

(5) Ask the construction unit to help solve the construction electricity consumption (380V, 150KW) and the tool storage area and lounge;

Fourth, the construction organization and implementation

1. Organization system:

The Project Management Department performs the functions of planning, organization and coordination, control, supervision and command, and comprehensively manages the quality, time limit, contract, safety and cost of the construction project.

2. Main construction methods and matters needing attention:

(1) Before the demolition operation, the construction unit should check all kinds of pipelines in and near the wall and confirm that they are all cut off before construction.

(2) When using tools such as rhinestones and pneumatic picks to manually dismantle walls and floors, the construction sequence should be top-down, and each demolition team shall not arrange operations on adjacent floors to avoid safety accidents due to structural problems. Workers should stand on scaffolding or a stable structure to operate, and the removed parts should be placed in a safe place. Demolition of construction waste should not be too concentrated in the floor to ensure the safety of the floor structure.

(3) Demolition construction shall be carried out in sections, and interchange operation is strictly prohibited. When working horizontally, there should be a certain safe distance between stations.

(4) When the concrete wall is demolished, the concrete wall should be demolished in blocks by drilling. However, it should be noted that the concrete block should not be too large, and the oversized concrete block should be transported after being broken by pneumatic pick.

(5) When the building wall is demolished manually, the method of digging or knocking shall not be adopted.

(6) When the concrete floor slab is demolished, the floor slab is divided into blocks by drilling, and the concrete floor slab is demolished one by one. Personnel are not allowed to stand on the unstable structural layer for operation. If necessary, planking or temporary scaffolding can be erected to ensure the construction safety of operators.

(7) Operators must be equipped with corresponding labor protection articles and use them correctly. Personnel entering the construction site must wear safety helmets. Seat belts must be used when working at a height of 2m or above without reliable protective facilities.

(8) The setting of relevant safety signs on the construction site shall be carried out in accordance with the current national standard "Safety Signs" GB2894. The construction unit must delimit the dangerous area, issue a notice before the construction, inform the construction precautions, and take reliable safety protection measures.

(9) After the demolition on the same day, all mechanical equipment should be stored in a centralized way, and a special person should be in charge. Temporary facilities during construction should keep a safe distance from the demolished buildings.

(10) The temporary electricity utilization on the construction site must be implemented in accordance with the relevant provisions of Technical Specification for Safety of Temporary Electricity Utilization on the Construction Site (JGJ46).

(1 1) In the process of demolition project construction, when a major danger or production safety accident occurs, the danger should be eliminated in time, rescue should be organized to protect the accident site, and the relevant departments should be reported.

(12) During the demolition project construction, there should be special personnel to sprinkle water on the demolition site to reduce dust and protect the environment.

(13) After the demolition project is completed, the construction muck shall be removed from the site in time.

3. Labor allocation: 30 blasters and 3 gas welders.

4. Time limit for a project guarantee measures

The effective construction period of this project is 30 days, and all subdivisional work will be carried out at the same time. In order to ensure the realization of the construction period, the following measures are formulated:

(1) Prepare a feasible construction preparation plan, arrange and organize the construction process scientifically and reasonably, establish a strict responsibility system and inspection system for preparation, and ensure that all subdivisional work must be completed as planned, with division of labor, layout and inspection;

(2) The company fully guarantees to give priority to manpower and material resources, so as to ensure the demand of construction progress and make it completed as planned;

(3) Strictly monitor the engineering quality of each working procedure to ensure that each working procedure can survive once, avoid rework and ensure the construction progress with high quality;

(4) Carry out overall plan management, adhere to the balance between daily plan and weekly plan, and hold regular production plan dispatching meetings to ensure the implementation of the construction plan;

(5) Carefully organize and effectively command, strengthen the control and coordination of the construction site, predict in advance, and timely solve the contradictions in labor, machines, equipment, process handover, materials and funds that may occur during the construction process, so as to make the construction process tense and orderly and balance the production in an orderly manner;

(6) According to the requirements of the general construction schedule, make detailed daily and weekly plans. Strengthen the scientificity and seriousness of the plan, and consider the influence of various unfavorable factors when making daily and weekly plans to ensure the effectiveness and feasibility of the plan. Once it is found that the daily plan lags behind the overall schedule, it should be adjusted in time, and corresponding remedial measures should be taken to make a feasible plan to ensure the realization of the overall schedule.

(7) In order to ensure the realization of the planned objectives, all departments must closely cooperate and coordinate, including the supply of materials and equipment, the deployment of labor force and the cooperation of professional teams.

(8) The construction team of the project department must organize construction in strict accordance with the requirements of construction procedures and construction specifications to prevent rework caused by unqualified processes. In each stage of construction, reasonably divide the construction flow section to form flow construction, and ensure the continuity of engineering construction;

(9) In order to ensure the continuous construction of this project, there will be no holidays and no rest, and every day during the construction period will not be wasted, and the attendance system will be strictly implemented.

5. Engineering quality assurance:

(1) engineering quality assurance measures

(1) Before construction, the management personnel should seriously study the construction specifications, process standards, design requirements and construction organization plan, so as to know fairly well;

(2) Do a good job in technical disclosure of construction personnel, and educate the participants on quality and safety;

(3) The change of construction technology must be agreed by both parties through consultation, and the change of engineering design shall be subject to written notice;

(4) When mechanical construction is carried out, designated persons shall guide the construction, and the construction shall be carried out in strict accordance with the operation procedures, and no illegal construction shall be carried out.

⑤ Strictly implement the construction process control procedures during the construction to ensure the construction quality;

⑥ Set up a quality monitoring team at the site, carry out construction in strict accordance with relevant national codes and regulations, and implement total quality management;

⑦ Implement a three-level quality management system, namely, individual construction self-inspection, next working procedure inspection and quality control of quality controller;

(8) Assign full-time personnel to carry out test work, prepare and sort out all kinds of test data, and solve problems in time when found;

(2) Technical data management:

(1) Data management shall conform to the relevant documents of the Municipal Construction Committee and the relevant provisions of the state;

(2) The technical data shall be true, complete, clear and tidy, the form shall be used correctly, the filling format and content shall meet the requirements, the signing procedures shall be complete, collected and sorted in time, and bound into a book by classification.

6. Safety organization and measures:

(1) Safety guarantee measures:

(1) Before the construction starts, the management personnel must be familiar with the specific locations of various obstacles, facilities and pipelines in the demolition area. Understand the natural conditions of the units around the protected parts and set up obvious signs;

(2) Strengthen the education of employees, improve their safety awareness, increase investment in safety protection, ensure the safety of facilities, conduct safety inspection in time, improve the safety system, clarify the reward and punishment system, control the injury rate within 1‰, and put an end to casualty accidents;

(3) The use of migrant workers should go through the entry formalities, so that they can be employed legally, sign the Construction Safety Responsibility Letter and implement the safety responsibility to people, and make technical and safety disclosure at different levels. Clear division of labor in construction, unified command, designated persons responsible;

(4) Safety helmet must be worn when entering the construction site, and non-construction personnel are not allowed to enter the site. Wear non-slip shoes and fasten your seat belt when working high above the ground;

(5) The special type of work must hold relevant certificates, and fire prevention and fire prevention measures must be started when welding is used;

⑥ All construction personnel must organize the construction in strict accordance with this plan, with unified leadership, and never allow illegal operation, illegal command and violation of safety labor discipline. Each type of work should conscientiously implement the safety operation procedures of this type of work, organize and construct meticulously, and successfully complete this construction task;

⑦ Mechanical equipment shall be managed by special personnel, regularly overhauled, and shall not be operated in spite of illness;

⑧ The distribution line shall be erected according to the regulations, and the distribution box shall be installed reasonably and in accordance with the regulations. All kinds of electrical equipment must be equipped with protective devices to prevent leakage and electric shock accidents. In accordance with the provisions of the safety management of electricity consumption, strengthen the construction site electricity.

7. Environmental protection measures:

(1) Seriously implement the relevant management regulations on the construction site, so that the construction site is smooth, the roads are smooth, the lighting is sufficient, there is no running water and there is always an ever-burning lamp. Garbage should be collected daily, removed daily, stored in containers, managed by special personnel, and removed uniformly;

(2) Seriously implement the national environmental protection laws and regulations, reasonably arrange the operation time, and sprinkle water at any time to reduce dust pollution during demolition;

(3) In order to ensure the quiet environment of the construction site, choose low-noise mechanical equipment to ensure the normal working and rest environment of the people around the construction site. Prevent construction pollution, minimize night construction and minimize noise operation. Arrange the working procedure reasonably, control the construction time, and try not to arrange large-scale mechanical construction work before 6: 00 am and after 22: 00 pm, which will not affect the rest of residents;

(4) Ensure that the site is clean and tidy during the construction period, and assign special personnel to be responsible for the site environmental sanitation. At the same time, educate employees to raise their awareness of environmental protection, not to make noise artificially and put an end to barbaric construction;

(5) Prevent the construction vehicles from scattering anywhere during transportation, and implement the "Three Guarantees" system in front of the site. There should be a special person to manage the muck removal, and a security post should be set up at the gate. After the daily completion of the dump truck, the 20-meter road surface passed by the dump truck outside the gate should be cleaned manually to keep the road surface clean and hygienic. Clean the dump truck every time it appears and keep it clean.

(6) There are many waste materials and machinery on site, and people and vehicles come and go frequently. All kinds of materials are piled up according to regulations and ready for shipment. All materials that can be transported at night should be transported at night as far as possible and cleaned up before dawn.

8. Fire control measures:

(1) Formulate fire prevention plans and pre-plans, establish and improve the post responsibility system and fire prevention system, improve the fire prevention organization, assign special personnel to be responsible, and equip voluntary firefighters;

(2) The layout of the construction site should fully consider the fire prevention requirements, set fire-fighting equipment as required, and designate a special person to be responsible for the management, so as to ensure that the fire-fighting equipment is not used;

(3) Fire exits and signs should be set up on the construction site. Organize the preparation of waste materials in time to ensure smooth roads on site;

(4) Strictly implement the system of using fire, and you must apply for and fill in the on-site certificate of using fire;

(5) Smoking is prohibited on the construction site;

(6) Before the demolition, two water supply and fire fighting pipes shall be welded on the outside of the main building by using the water supply port provided by Party A, and a door switch shall be installed on each floor to ensure dust suppression and fire fighting during the construction.

9. Safety requirements:

(1) Improve the public security organization, and assign special personnel to be responsible;

(2) Improve the anti-theft system to prevent materials from being stolen, and set up 1 ~ 2 people to patrol at night;

(3) Establish a cadre duty system to prevent all kinds of illegal and criminal acts. A security team was set up at the scene, and all vehicles entering and leaving the scene were certified, and all vehicles were driven according to the designated route. Articles appearing on the site must have exit permits, and there will be no guests on the site. Foreign unit visits must be approved by the leaders.

10. Civilization requirements:

(1) Establish the responsibility system for plane management and civilized construction, and divide the responsibility areas;

(2) Strengthen the education of spiritual civilization for employees, abide by the rules of national courts, do not fight, do not drink too much, treat people in a civilized manner, and conduct civilized construction to show the good quality and service level of our employees;

(3) Do a good job in communication with the local government, public security, environmental protection departments and surrounding units, do not disturb the people, pollute the environment, destroy the greening, abide by the various systems and regulations of the Municipal Construction Committee, and build spiritual civilization;

(4) The construction machinery shall be placed reasonably and orderly, and the construction area shall be isolated from the living area. Divide the area of responsibility and clean up all the sundries in the site in time. No littering, defecation, constantly improve their own quality and quality of enterprise, and strive for a civilized enterprise.

(5) Organize the construction in strict accordance with the construction site procedures, coordinate and balance the relationship between mechanical demolition and vehicle muck removal, internal and external with correct construction procedures, and ensure the smooth progress of the project in a tense and orderly manner;

(6) Insist on civilized construction, improve the standardization, standardization and scientific management level of the construction site, assign special personnel to guard the entrances and exits, and idle personnel are not allowed to enter at will;

(7) Safety signs, fire signs and safety signs should be eye-catching, and the "Three Treasures" should be carefully used to protect the four mouths. The construction site shall be equipped with fire-fighting equipment and inflammable, explosive and explosive drugs according to regulations, and stored in a special warehouse.

(8) Keep the construction site smooth and clean, and keep the road drainage unblocked. Ensure adequate lighting, no ever-burning lamps and roadblocks. Garbage dumps should be set up in the living quarters, which should be cleaned frequently, and the site should be cleaned after construction.

1 1. Construction interference measures:

(1) After the project starts, strengthen the contact with the neighborhood committees and surrounding units, obtain the support of the surrounding units such as sanitation, municipal administration, transportation and public security, strictly abide by the laws and regulations of the local government, and contact the local neighborhood committees in advance to obtain the understanding and support of the residents when the special process must be continuously constructed to disturb the people;

(2) Educate employees to respect residents' living habits, not to wander around the community in groups, not to make trouble by drinking, not to fight, to use polite expressions and to help others actively;

(3) Educate drivers to drive and operate in a civilized way, so as to prevent nuisance and traffic accidents;

(4) Reasonably arrange the construction time and time, stagger the rest time of residents, reduce noise disturbance, and ensure the smooth progress of the construction period by using harmonious relationship.