GFRC project construction organization design plan

The first. GRC component composition, process and flow:

1. Composition of GRC components: The basic components of GRC components are aluminum citrate fast-drying cement, alkali-resistant mesh fiberglass cloth, alkali-resistant glass fiber yarn, river sand, and galvanized steel bars.

2. According to the requirements of the owners, the GRC components shall be provided with the technical drawings that meet the requirements and be signed and approved by the design department. They shall be submitted to the mold group under the production department as a high-standard, high-quality molding mold, and be tested by full-time quality inspectors to meet the quality and technical requirements. After that, the production workshops are ready for production. After the production workshops receive the re-confirmation of the molds, they are processed according to the technically determined requirements, steel bar specifications, layout, and connection methods. According to the mixing ratio of 1:1.5 of cement river sand, additives are added, and the raw materials for GRC components are produced by stirring.

3. During the production, first apply the mold release agent on the mold, and lay a 1:1 (cement:sand) cement mortar on the surface of the mold, and then lay an alkali-resistant mesh fiberglass cloth, and put it in advance. After molding the pre-embedded steel bar, according to cement, river sand, and alkali-resin glass fiber filaments, the cement mortar with additive ratio of (1:1.5:0.15) added to the additive is evenly placed in the mold, and is laid flat, compacted, and wiped smooth. Steam drying molding. The formation of excellent, high-quality GRC products.

Second, the construction organization design:

In order to ensure the quality, progress and safety of the project and improve the efficiency of construction, the company special project manager, project deputy manager, on-site technical leader, construction foreman, installation leader, installation team, safety officer, full-time electrician, welder, machine tool, Mechanic and handyman, see the attached table for details.

Third, pre-construction preparation:

1. According to the construction drawings provided by the construction company, our company's project department:

A. Seriously check the actual situation of the construction drawings and the site, if any problems are resolved immediately with the construction party.

B. According to the finalized design plan, and according to the specifications, quantity, installation site cleaning check, after the accuracy is correct, the organization of GRC component production, approach

C, accurate marking, positioning.

D, organize personnel to enter the installation.

Fourth, installation and construction:

1. According to the determined construction drawings and the technical disclosure of the construction project department, according to the installation position and elevation, the installation vertical and horizontal lines of the GRC components shall be released.

2. According to the design drawings, the specifications of GRC components, metal expansion bolts, welded galvanized steel bars, drills, etc. at the installation site are selected and transported to the installation site. The distance between the reinforcing bars and the pre-embedded distribution bars of the components shall prevail and be blown on the construction carrier by electricity. Corresponding to the distribution distance of the pre-embedded reinforcing bars of the component, holes are punched, and metal expansion bolts are buried in the space. The metal expansion bolts must penetrate deep into the bottom of the carrier and be tightened.

3, the installation of components must be placed on the horizontal and vertical lines, to ensure that the horizontal and vertical errors and technical disclosure requirements consistent.

4. Punch one hole at each end of the GRC component installation site, insert the steel bar (to ensure the installation horizontal direction), place the GRC construction on the inserted steel bar, pull the horizontal line on the component, and after the horizontal and vertical lines are determined, Pre-embedded selected galvanized parts for welding and preliminary welding of pre-embedded metal expansion bolts, to be initially fixed by welding, to be finally fixed after inspection, and when the welding is performed with single-sided lap welding, the lap length is ≥10d, double-sided Welding length ≥ 5d, such as when the lap length can not reach the use of reinforced or fixed welding, can not leak, false welding, bite.

5, galvanized steel welded parts and anti-rust paint brush should be to prevent oxidation corrosion.

6. When encountering a hollow brick wall, the lines below the height of 300mm are fixed in the above manner, and the lines with a height above 300mm should be welded in the tail of the expansion bolt and the rebars with the same diameter as the expansion bolts are welded into the T-shape through the wall. The length is not less than 80mm-100mm, the distance between the spacing and the embedded reinforcing bar is the same, and corresponds to ensure the installation is firm.

7. Joint repair

A: Filling the inner seam (opening line): The position to be installed, the verticality, the horizontality, the welding length, the antirust paint, etc. all meet the design and construction requirements, and after the inspection and acceptance by the relevant departments, they will be replenished. When cleansing, wet joints are first moistened with water, and the prepared 1:2.5 cement mortar is used to make joints. Among them, the component and the lower horizontal joint of the carrier are seamed into a triangle, with a height of 3-150 px, or the cover of the bottom expansion bolt shall prevail. Vertical vertical seam, repair seam width 5-200px, thickness 2-75px (excluding cover member, window cover line), fill.

B: Filling of outer vertical facades: After the joints are cleaned or filled into "V" shapes, they are filled and straightened with glass fiber, 801 glue, and cement mortar.

C: The seam at the junction of the component and the wall

1. After the seam is cleaned or filled into a "V" shape, it is filled and flattened with glass fiber, 801 glue, and cement mortar.

2. Used as insulation special anti-crack mortar to form a "V" shape or a small "R" (made by insulation company)

3. Fill

A. When the GRC component comes with a cover plate, it is not filled.

B. When the distance between the upper mouth of the GRC component and the main structure is ≤ 400 mm, the mix ratio of cement and slag is 1:5.

4, top pressure

A. When the GRC component comes with the cover plate, it does not press the top.

B, pressure top using C20 fine stoning.

C. All sampius lines, rain walls, and turrets should be considered when the pressure is at the top of the 5% slope, which is the internal flooding, and the rest is external flooding with a slope of 5%. It is installed except under the rain board and the cornice board.

5, waterproof

A. The rolling roof and cover plate of the GRC component shall be covered with a waterproof membrane. The junction with the wall must be curled with a height of 100 mm.B. Waterproof membranes should be selected by the manufacturers approved by the state.

C. The surface of waterproofing membrane should be made of 1:2 cement mortar protective layer h=25mm.

D. The construction quality should be strictly implemented in the construction.

V. GRC component technical requirements (according to Q/74034994-5.02-2002 compilation)

A, Cement: Cement shall comply with JC714-1996

B: Coarse aggregate: The ceramsite should conform to JC714-1996, and the pebbles and gravel should meet the requirements of GB/T14685-2001.

C: Fine aggregate: Fine aggregate should meet the requirements of GB/T14684-2001.

D: Rebar: It should meet the requirements of GB1499-1989.

E: Glass fiber; should comply with JC/T572-2002 regulations.

F: Steel wire: It should meet the requirements of GB/T5223-2002.

G: Water: Production mixing water should comply with JCJ63-1989 regulations.

Sixth, construction safety measures: (see the attached table for details)

1. Establish a safety management system and safety responsibility systems at all levels.

 A. The on-site management (construction foreman) should cooperate with the safety personnel of Party A to do a good job of safety. The offending personnel should severely criticize the education, and the safety consequences should be at their own risk.

B. Establish labor safety disciplines and rewards and penalties on site, and cooperate with Party A security personnel in setting up warning signs and signage at important locations to enhance the safety awareness of construction workers.

2. Cooperate with the safety staff of Party A to strengthen the safety education and safety technology disclosure work, implement the safety production policy of “safety first, prevention first”, and conduct safety education when the operators participating in the construction approach enter the market, ideologically causing construction personnel , Operators attach importance to improving safety awareness, eliminating blind, risky, adventurous and other dangerous behaviors. Conduct partial project safety technical disclosure work prior to local and sub-project construction, and make records, perform inspections and supervision in the construction process. Correct violations at any time.

3. Formulate engineering safety technical measures:

A. Protection against electric shock and fire: In the aspect of construction electricity use, all power supply circuits shall be set according to the floor plan of the construction, and be maintained in a good working state. It is forbidden to take private connections and surround the metal rods, and a full-time electrician shall be set up at the site. Power lines are serviced at any time.

B. Anti-mechanical wounding: All non-workers are not allowed to operate the construction machine arbitrarily. Specific operation personnel must hold a certificate and the open-air machinery must do a “three defenses” measure.

C. Falling from high places: It is forbidden to play nuisances at high altitudes. It is strictly forbidden to wear hard bottoms and easy-to-slip shoes to work. Prohibition of drinking after work is necessary. A belt must be worn for work and the helmet must be worn properly.

D. Anti-dropping objects hurt people: It is forbidden to throw any object from high altitude. It is necessary to wear a safety helmet when working.

E. Strengthen inspections at any time before work, during construction, and after work, correct any violations at any time, discover hidden dangers, eliminate them in a timely manner, and summarize safety work and hold safety meetings.

Seventh, construction technology measures:

1. The material, specification, shape, installation position and fixing method of the material should meet the design requirements and be firmly installed.

2. The length of the lap joint must be ensured when the component is installed. The weld seam is full and smooth. It is forbidden to have false defects such as false welding, missing welding, and “bite”.

3, the surface is smooth, straight lines, seams less than 5mm. .

4. The number, size, position and connection method of expansion bolts must meet the design requirements.

Eight, civilized construction:

In order to strengthen the civilized construction management of construction sites and maintain the cleanliness of the city's urban appearance and environment, these regulations have been formulated in accordance with relevant state regulations and the actual conditions of the site.

1. The project manager (project leader) of the construction unit is responsible for the overall management of the construction process, establishing a civilized construction responsibility system, and organizing the implementation.

2. In accordance with the requirements of the general construction plan for the construction of the building, stacking construction equipment and material sites shall be set up; without approval of the general contractor, no construction materials or machines shall be stacked on the construction site.

3, shall not invade the on-site roads and safety protection facilities.

4. Implement all measures except “four hazards” and control the “four harms”.

5. The dormitories of migrant workers in the construction site should meet the requirements for hygiene and residence. The dormitories should be kept clean and tidy. There must be no irrelevant personnel for men and women living together with residence and construction. Do not urinate anywhere.

6. The compartments of the transport vehicles on the construction site should be securely and strictly prohibited from being thrown, sprinkled, dripped or leaked along the way during the loading process. Transport vehicles must be flushed out of play.

7. During the construction, attention should be paid to cleaning up the construction site so that it can be followed with cleanliness to keep the construction clean.

8. Construction materials, waste soil, old materials and other miscellaneous materials shall not be randomly thrown during construction, and rickshaws and tricycles shall not be used to transport construction waste, waste soil and building materials off site.

9, set a variety of protective facilities to prevent the construction of dust and waste, debris drift

10. Temporary firefighting facilities

1. The construction work surface shall be equipped with fire-fighting equipment, and all participating construction personnel shall be trained in relevant fire prevention knowledge so that the fire extinguisher can be correctly used, the fire-extinguishing system can be defined, and the relevant regulations and declaration system of fire monitoring can be specified.

Tenth, product protection

During the construction period, the subcontractor shall bear the responsibility of implementing product protection for the projects completed in succession. The subcontractor shall keep good records of his own products, especially valuables. After the acceptance of a single project, the general contractor shall be responsible for the corresponding product protection work.

11. In order to ensure the smooth completion of the project, emergency measures shall be taken

1. Rainfall emergency measures for construction projects: Bring a group of rain-proof cloths. When it rains, cover the top of the building with scaffolding to protect the safety of construction personnel.

2. Emergency measures for construction speed

A. When the construction progress of the project fails to meet the expected requirements, it immediately organizes the additional preparation to enter the stage.

B. When the construction progress of the project does not meet the expected requirements, all the staff shall be organized to repair overtime in turn.