Begging for a construction organization design

Station platform construction organization design

1. Basis for compilation

1. Joint review of Taiyao Station platform overhaul design drawings by the Railway Bureau’s General Engineering Office and Design Institute Relevant requirements and related construction drawings.

2. Regulations and measures regarding safe production and civilized construction.

3. National current construction specifications and quality inspection and assessment standards.

4. The specific natural conditions of the construction site, topography and geology, transportation, water supply, power supply, resources, etc.

II. Project Overview

Project Location: Taiyao Station

Project: Taiyao Station Platform Overhaul Project

Project Content:

1. 3057.1 square meters of concrete platform surface was demolished.

2. The newly made 180mm concrete platform surface is 3057.1 square meters.

3. 354 meters of new cable trench.

4. The newly made platform cap is 408.5 meters.

5. The newly built platform safety line is 408.5 meters.

3. Construction organization and deployment

This project is a platform construction operation. During the construction process, the safety of station equipment, underground cables and construction personnel must be ensured. Based on the actual conditions of the project, the company established a platform construction organization and management agency. The specific composition and main responsibilities are as follows:

1. Company management organization: Xu Qi, Guo Dongxiao, Yan Meicheng

Responsibilities: The company leaders are responsible for the overall management, organization and coordination of the project; Yan Meicheng is responsible for the construction On-site slogan promotion work; Guo Dongxiao is responsible for project bidding, signing of safety agreements and safety training for construction personnel.

2. On-site construction management organization: Jin Huijing Hongqiang (safety officer) Gao Yanfeng

Responsibilities: Responsible for construction site management, high-standard positioning according to the requirements of the center and the company, strict management, and ensuring safety. The quality reaches a high-quality project. Responsible for contacting and coordinating with superior departments and relevant units and departments; determining construction organization plans, construction safety measures, and organizing construction; responsible for monitoring driving dynamics, issuing warning signals in a timely manner in accordance with regulations, checking construction equipment and on-site personnel wearing safety equipment and protective settings, In accordance with safety requirements, violations of regulations and disciplines are discovered and stopped promptly; construction quality is inspected in accordance with quality control requirements; on-site material stacking and material entry channels are implemented. Ensure the safety of driving, equipment and construction personnel, and ensure the quality of the project.

3. Organization of construction personnel

Taiyao Station organizes a construction team for construction. The construction team is equipped with full-time safety officers. The construction team is initially set to 40 people. The number of construction personnel will be adjusted according to the on-site conditions. Before entering the site, all construction workers will receive safety training organized by the company to familiarize themselves with safety precautions and master relevant safety skills.

The construction team is responsible for managing its own construction personnel, providing unified command, and obeying the management systems of the construction unit and the user unit. The construction team actively coordinated with the station to solve the food and housing problems of the construction workers and was responsible for the safety of its own personnel and equipment. All construction vehicles, machinery and equipment, and construction personnel must enter and exit from designated locations on site to ensure the safety of vehicles, equipment, and people during construction.

Arrangements for construction personnel to enter the site: On-site management and construction personnel, machinery, tools, and vehicles will enter the site on the afternoon of September 26 to make preparations for construction.

IV. Construction preparations

(1) Organizational preparations:

This project is a construction operation for an existing line platform. During the construction process, it is necessary to ensure that the station traffic and Equipment and personal safety. After completing the bidding and signing the contract and safety agreement, an on-site construction management organization will be established based on the actual conditions of the project. Conduct audits on all types of management and construction personnel, and establish and improve various management systems.

(2) Technical preparation

1. Organize and prepare construction plans for key projects and key parts.

2. Organize participation in design briefings, conduct construction technical briefings, and organize safety learning and training.

3. Submit plans for materials, semi-finished products and components, and determine the entry time.

(3) Material and equipment preparation

1. Formulate a material supply plan to ensure the timely supply of materials.

2. Implement mechanical equipment, facilities, tools and equipment, and various safety protection supplies, and organize the entry into the site as planned.

(4) Labor force preparation: According to the construction organization design, prepare the construction team. Evaluate the work performance of the construction team, organize relevant construction personnel to enter the construction site, and organize construction personnel to enter the site as planned.

(5) Site preparation

Contact the construction water and electricity department, determine the material storage site, and clear the entry and exit roads to ensure safety and smoothness.

(6) Coordination outside construction: Establish regular contact with the central room technology department and design units, constantly solicit their opinions and requirements, and improve the construction organization design. Coordinate internal relationships to ensure efficient, low-cost, and smooth operation of various assurance systems. Under the unified coordination of the company, maintain good relations with other relevant departments.

V. Construction progress plan and progress organization measures

(1). Construction start date: September 26, 2008

(2). Completion date: November 22, 2008

(3) Construction progress: Construction will be carried out in accordance with the center's construction period requirements. See the horizontal chart for detailed arrangements.

(4) Technical organizational measures to ensure progress:

1. Take the progress plan in the construction plan as the leader, control the construction period of "key nodes", and implement long-term planning and short-term planning. Arrange, strengthen the mobilization function, hold on-site analysis meetings in a timely manner, formulate measures and solve problems.

2. Make reasonable use of the construction site and arrange construction operations in small water sections in a timely manner to ensure that the construction surface, personnel and machinery are not idle.

3. Submit detailed materials and machinery plans, and determine the date of entering the construction site based on the construction progress. Implement the material ordering contract and determine the date of material arrival. Implement construction machinery and tools.

4. The company established an organization and management agency for the project, implemented the guarantee personnel, and organized strong construction personnel to ensure construction safety, construction quality and progress. The construction plan and progress plan shall be reported to the Central Housing and Construction Technology Department, and the construction progress shall be reported to the Central Housing and Construction Technology Department every Friday.

5. Carry forward the spirit of tenacity and hard work and strengthen management functions. According to the construction situation, coordination meetings will be convened in a timely manner. Establish an effective work system and information feedback system to strictly control project quality and progress to ensure the smooth progress of the construction period.

6. Carry out construction coordination and scheduling, reasonably allocate personnel, materials, and machinery, discover problems in a timely manner, and analyze and solve them in a timely manner.

7. Persist in reporting construction quality and project progress to the center in a timely and accurate manner, and report problems existing in project quality and project progress in a timely manner so that discovered problems can be solved in a timely manner.

8. Strengthen safety precautions to ensure the construction period with safety and quality.

9. Strictly formulate a scientific and reasonable construction schedule, make adjustments and improvements during the execution process, check the execution status, and reasonably shorten the construction period.

10. Choose good construction machines and do daily maintenance of the machines to keep them in good working condition.

11. Strengthen close contact with the user units and do a good job of coordination and cooperation.

6. Quality objectives, quality assurance points and technical organizational measures

(1) Quality objectives

Quality level: Achieve high-quality projects on the basis of qualifications.

(2) Quality assurance technical and organizational measures

1. Establish a complete quality assurance system, and recruit competent personnel to form a construction site management organization. All front-line project personnel will be accommodated on site. Leaving work without authorization is strictly prohibited.

2. From the control of technical indicators: Be familiar with the design documents, put forward review opinions, and eliminate foreseeable factors in the design before the construction process. Once the construction plan is determined, the construction must be carried out in strict accordance with the construction plan and standardized construction drawings. Unauthorized or incomplete changes are strictly prohibited. In terms of inspection records, strict checks must be made, careful inspections must be made, construction diaries must be kept, and technical data must be collected and organized in a timely manner. Good technical information work. In terms of raw materials, we must control the incoming materials, do not allow inferior and unqualified materials to enter the site, and make timely records of material testing and entry. Organize construction personnel to familiarize themselves with construction projects, formulate construction plans, and understand safety protection measures, etc.

3. Strengthen construction measures in rainy days, such as covering with colorful strips of cloth, equipping the construction site with raincoats, rain gear, lighting fixtures, etc.

4. Strictly implement the quality inspection and judgment standards of construction and acceptance specifications, and strictly control the process to ensure that the construction quality is always stable and orderly.

5. Strictly control the construction process. The previous process must be responsible for the next process, and the "three inspections and three inspections" system is strict.

6. Firmly establish the ideology of "creating high-quality products and striving for first-class excellence" and the guiding ideology of "a century-old plan, quality first".

7. Strictly implement management systems such as the technical responsibility system, technical disclosure system, technical review system, material and equipment inspection system, engineering quality inspection system, and technical data file management system.

8. Strengthen construction organization, design and management work according to the actual conditions of the construction site.

(3) Technical organizational measures

(1) Construction procedures

1. Taiyao Station has a long and narrow layout from east to west, and the construction channel is at the east end of the platform. . The construction is gradually advancing from west to east, with elevation review, ground demolition, cable trench pouring, lime soil cushion and concrete hard surface pouring, and platform cap laying gradually carried out.

Construction sequence: Organize on-site disclosure → Leveling the construction site, reviewing elevation control piles, etc. → Prefabricating trench covers and platform caps → Dismantling the original platform surface and caps, and transporting garbage → Site leveling and construction Ramming, positioning, excavation and masonry of cable trench → Unified leveling and elevation review → Laying of lime soil cushion → Fractional pouring and curing of concrete surface layer → Cutting of contraction joints, pouring of expansion joints → Installation of movable covers and platform caps → Clean up the scene. The construction project shall be reasonably arranged according to the actual conditions on site.

(2) Technical requirements for major construction projects

1. Elevation review: Review all elevation points marked in the drawings against the site to determine the consistency between the drawings and the site.

2. Prefabricated components: According to the drawing requirements, all platform caps and trench covers are prefabricated in the prefabricated factory to ensure construction quality and dimensional accuracy.

3. Demolition project: It complies with the technical requirements for safety. It is strictly prohibited to use large mechanical equipment to demolish the original floor. When demolishing the floor, special attention should be paid to protecting underground cable facilities that are not located in the cable trench. The cable trench It is strictly forbidden to damage cables, equipment, etc. during excavation and masonry construction.

4. Cable trench masonry: According to the drawing requirements, the cable trench location, cable trench section and method meet the design requirements and are easy to use.

5. Lime soil cushion: The soil is screened before use to ensure that the particle size of the soil and slaked lime meets the specification requirements. The volume mix ratio of lime soil is 3:7. The mix ratio must be strictly controlled, the mixing must be uniform and consistent, and the mixture must be stirred at least twice. The color of the mixed lime soil should be consistent, and the moisture content must be properly controlled. The construction site inspection method is: hold the gray soil tightly into a ball with your hands, and crush it lightly with two fingers. If the soil moisture is too high or insufficient, it should be dried or moistened by sprinkling water. The thickness of lime soil paving can be selected according to different construction methods. After each layer is laid, it should be leveled with a wooden rake and checked corresponding to the standard wooden piles on the floor. The number of tamping (pressing) times should be determined based on the dry soil mass density required by the design or on-site testing. Generally, it should be no less than three times. Manual tamping should be done once and half of the time. cross. The dry soil mass density or penetration area of ??the lime soil must comply with the design requirements and construction specifications. The lime soil cushion requires correct ingredients and even mixing. The thickness of the layered virtual paving meets the regulations. It is compacted and compacted. There is no looseness or peeling on the surface. The location and method of the layered joints are correct, and the joints are dense and smooth.

3. Concrete surface layer: The concrete surface layer is 180mm thick C25 concrete, and the slump is not easy to be greater than 30mm. The concrete is produced strictly according to the mix ratio. The production site is equipped with measuring instruments, and the concrete water-cement ratio is not greater than 0.5. The cement is required to be grade 42.5. It is required to lift the dough from the original slurry and finish the dough at least twice. It is strictly forbidden to sprinkle water or cement powder on the panel when making the dough. And should be completed before final setting of cement. Concrete should be randomly sampled at the pouring site to produce concrete strength test specimens, and the sampling and test specimen retention should comply with the current acceptance specifications. The mixing time of the concrete is controlled according to the capacity of the mixer. The concrete is mixed with a combination of insertion and surface vibration. The insertion vibration shall not be less than 20 seconds and the flat vibration shall not be less than 15 seconds. Drinking water is used for mixing concrete. The entire transportation, pouring and interval time of concrete should not exceed 1.5 hours, and concrete in the same construction section should be poured continuously. The retention positions of construction joints are set according to the on-site construction plan. The cutting method is used for shrinkage joints. When the strength of the concrete reaches 25%-30% of the design strength, a cutting machine is used to cut the construction joints and the design positions of the expansion joints. The joints are filled with asphalt sand. , the filling depth is 3-4cm, and the filling height is slightly lower than the board surface.

Curing is carried out within 12 hours after the concrete is poured. The curing water is the same as the accompanying water. During the curing period and before filling the joints, vehicles are prohibited from passing. The curing time is 14-21 days. The allowable error for the surface flatness of the concrete surface layer is 10mm, and the allowable error for the thickness is ±10﹪.

4. Platform caps: The platform caps shall be laid strictly in accordance with the relevant provisions of the new technical regulations and shall not be less than 1725mm. Intrusion is strictly prohibited. Special attention must be paid during construction. When the construction of the project is completed, the construction and rolling stock departments must be contacted in a timely manner. Organize acceptance and formulate text and countersign data for storage.

7. Construction material transportation channels and on-site material storage

On-site material entrance: Taiyao Station entrance gate

On-site concrete mixing station and material storage location In the open space in front of the warehouse on the west side of the pier at the east end of the platform, materials must be piled up in categories and neatly, so as not to affect the appearance of the station as much as possible. A dedicated person is responsible for the safety of entry and exit at the gate, ensuring that no idlers are allowed to enter or leave the station through the construction passage, to ensure traffic safety and personal safety at the station.

8. Safety Objectives, Safety Assurance Technical Organizational Measures and Emergency Response

(1) Safety Objectives

Safety Objectives: Eliminate accidents involving serious personal injury or more, and strive to reduce General minor injury accidents, eliminate liability accidents involving mechanical equipment and underground facilities, eliminate fire accidents, and prevent incidents involving supervision and supervision by road bureaus and central authorities.

(2) Technical organizational measures for safety assurance

1. Implement national guidelines, policies and regulations on production safety and labor protection. Establish and improve safety production organizational structures and management systems. Implement job responsibility system.

2. Strengthen the publicity of safety production, clarify the scope of safety production responsibilities, make safety precautions clear to personnel at all levels when arranging work content, carry out safety briefings in a targeted manner, and stack construction road materials neatly.

3. The construction technical department must understand the design requirements for safe construction, the impact of the construction environment on safety, and take corresponding technical measures to ensure safety. Each individual project should have safety technical measures disclosed. Formulate technical measures for construction safety of new technologies and special operations, fire safety and other technical measures.

4. Set up a safety manager at the construction site, who is responsible for safety inspections and safety education, understands and handles relevant safety issues, and promptly reports the discovered problems and handling results to the company leaders.

5. The rubber wires and insulation performance of all electrical equipment on the construction site must be maintained in good condition; safety warning signs must be set up on electrical equipment with exposed live parts and areas prone to electric shock hazards, and it is strictly prohibited to connect wires indiscriminately.

6. Check the machinery in detail before using it. It is strictly forbidden to operate the machinery with disease or overload, and it is not allowed to expand the scope of use of the machinery at will. There should be sufficient lighting during night construction, and no work should be done without clear vision.

7. Fences and warning signs should be set up around the demolition area, and irrelevant personnel are strictly prohibited from staying.

8. Before dismantling the original platform surface and digging ditches and trenches, you must learn from the relevant departments about the various pipelines, cables, etc. buried underground, and take protective measures together with the user units to prevent construction damaged in the process. During construction, a combination of small machinery, manual labor, and hand-held power tools are used to dismantle the platform surface, and manually excavate cable trenches. The use of mechanical excavation is strictly prohibited to ensure the safety of cable equipment.

9. When replacing platform caps, the company will make unified arrangements and construction, and take measures to prevent damage to the driving equipment. If a train passes or stops during the construction, the construction will be stopped immediately and the construction tools will be placed in a safe place. Safe location outside the line.

10. When using the vibrator, the operator must wear rubber shoes and rubber gloves. Before using the mortar mixer, check the test operation condition and make sure it is safe and reliable before operating. When the mortar mixer is started, it is not allowed to extend tools or people into the drum, nor is it allowed to put materials into the drum. During shutdown, shift change, and regular maintenance, remember to cut off the power supply and lock the knife box.

11. It is strictly forbidden to work after drinking. You must concentrate on your work. It is strictly forbidden to wear high heels or slippers into the construction site.

12. Electricians must be familiar with the "Technical Specifications for Temporary Electricity Safety at Construction Sites". All insulation inspection tools should be properly kept, other uses are strictly prohibited, and they should be inspected and calibrated regularly. It is forbidden to connect or cut off the power with load on the line, and it is strictly prohibited to operate while the power is on. Electricians should always check whether the insulation of wires is reliable and whether there is leakage.

13. Construction workers are strictly prohibited from entering the center of the road, climbing over the tracks and climbing rolling stock.

Construction personnel and machinery are not allowed to be placed within the track ballast. It is strictly forbidden to invade the railway traffic limits. It is strictly forbidden to throw bricks, stones, tiles and other debris at passing vehicles. It is strictly forbidden to move railway equipment. It is strictly forbidden to climb railway power supply towers. It is strictly prohibited to sit or lie down in the buttocks. Violators will be dealt with seriously.

14. All participants must wear safety protective equipment correctly. It is prohibited to wear red helmets. Construction safety protection personnel must stick to their posts and sound the horn in advance when vehicles pass.

15. An important safety hazard during construction is damage to railway communications and power facilities during foundation excavation. Therefore, before excavation, you should actively contact the electricity, railway, public works, power supply and other units. Manual excavation was carried out with the cooperation of relevant departments, and the cables and optical cables were discovered and confirmed in a timely manner before construction continued.

16. The distance between all tools and the live parts of the traction power supply shall not be less than 2 meters, and shall not be less than 4 meters on rainy days. All tools and equipment are strictly prohibited from being stacked near the stock road, and a safe distance must be maintained when stacking. During construction, any objects, especially metal objects, are strictly prohibited from contacting the rails. No materials or machinery shall be stored between the two lines or between the sleeper ballasts. Temporarily stacked construction materials and machinery shall not intrude into the area. Measures must be taken to enclose and stack them neatly.

17. Safety protection personnel are not allowed to leave the construction site during the construction process. After the construction is completed, the protection personnel must inspect the construction area to ensure that there are no debris and obstacles within the limits and no hidden dangers to driving safety.

18. Strengthen the dietary management of construction workers to avoid the occurrence of excessive eating habits. Emphasize fire prevention, theft prevention and safety and health management of construction site dormitories to ensure construction site safety.

19. After each day of construction, promptly analyze the safety situation of the day and propose rectification plans.

20. All on-site construction workers must obey the warnings and instructions of safety personnel and follow orders and prohibitions.

(3) Emergency treatment

1. Emergency treatment plan when the cable is damaged during demolition construction: Stop the construction immediately, protect the site, and immediately notify the central safety supervision department and equipment The management unit will wait until each unit comes up with a treatment plan and cooperates with the equipment unit to handle it properly before construction can continue.

2. Emergency treatment plan when an emergency stop of the train occurs during construction that affects driving safety: immediately notify the station attendant to call the train driver for emergency stop, and set a stop signal (waving a small red flag) at the fault location.

9. Civilized Construction

1. On-site security personnel wear armbands; on-site construction personnel uniformly wear yellow vests and safety helmets.

2. During the construction process, the surrounding environment should be protected, timely cleaning and watering should be carried out to avoid dust, and appropriate protection should be provided.

3. Garbage generated during construction should be piled up in a centralized manner and cleared out in time. Garbage must not be dumped into stock channels or cable trenches.

4. Construction materials and machinery on site should be stacked neatly.

5. Hang slogans and banners at the construction site to strengthen publicity.

6. After the construction is completed, the on-site cleanup work should be strengthened to ensure that the materials are clean upon completion.

7. Organize construction strictly according to procedures, ensure unified scheduling, unified management and command during the construction process, and maintain good construction procedures.