Project overview
Project name: a production building in Tangshan.
This project is located in high-tech development zone, bordering Jianshe North Road in the west and Qingnan Road in the north, with a length of 58.82 meters from north to south and 48.93 meters from east to west. It is "╭╭" shaped, with convenient transportation and superior geographical position.
2.l architectural features
The main body of this project has five floors, with six or seven floors locally (there is a basement on the other floor locally) and frame structure, with a total construction area of 7 1 17.7 square meters. The first floor is the telecom business hall, the second to fifth floors are mainly computer rooms and offices, the basement is the inflatable room and cable room, and the sixth and seventh floors are the microwave antenna room and water tank room.
The important category of buildings in this project is Class B buildings, and the project is fortified according to the degree of earthquake cracks. The seismic grade of the frame is Grade I, and the building height is -3m in the basement, 5. 1m in the first floor, 4.2m in the second to fifth floors, 2 1.9m in the total main height, 3.9m in the sixth floor and +33.2m in the spire height of the seventh floor. ..
2. 1. 1 fence:
The external wall is 250 mm thick aerated concrete block. The interior wall is made of 190 thick ceramsite concrete block.
2. 1.2 doors and windows engineering:
Windows include plastic-steel windows, plastic-steel doors, wooden doors and fire doors. The color of exterior doors and windows is light gray, and the glass is colorless and transparent.
2. 1.3 exterior wall decoration:
The front of the entrance of the lobby on the first floor is light yellow and light gray stone, and the rest is imitation brick, with white paint on the corners and cornices.
The entrance of the hall is a glass curtain wall, the seven-story spire is a red tile roof, and the outdoor steps are granite surfaces and non-slip floor tiles.
2. 1.4 interior decoration:
The business hall, corridor and office are marble floor, floor tile floor, latex paint wall and mineral wool board ceiling; Toilet floor tile, glazed tile wall, mineral wool board ceiling, others are cement mortar floor, painted ceiling and wall.
2. 1.5 roof waterproofing:
SBS modified asphalt waterproofing membrane is adopted, covered with type III (-15℃) silver paste, and the waterproofing grade is Grade II.
2. 1.6 The downpipe adopts φ 1 10UPVC pipe.
2.2 structural features:
This project is a frame structure with bearing capacity of 170kpa and independent foundation.
The cushion of concrete foundation is C 10, and the foundation is C20. The main frame, beam, slab and column are C35 below three floors and C30 above four floors. The structural column is C20, and the aerated concrete block and ceramsite brick block are built with M5 mixed mortar.
The importance of building is divided into two categories, and the safety level of building structure is Grade II.
This project is fortified according to the seismic intensity of octave. The seismic grade of the frame is Grade I, and the soil near the earthquake site is Grade II.
2.3 site construction conditions
The site is flat, and the water source is temporarily from the northeast corner. After entering the site, connect φ 100 pipe network into the site. Power supply 3 15KVA box transformer is in place.
3. Construction deployment
3. 1 Division of construction sections and construction sequence
According to the structural form, it is divided into two flow sections, A and B, which are bounded by axes ③ and ④. The office area is Area A, and the production area is Area B. The flowing water construction of steel bar, formwork and concrete is formed in each flowing water section, and the plane space is fully utilized to organize the interchange operation.
3.2 Construction Team
Send a civil construction team; A decoration team; A water, heating and equipment installation team and an electrical installation team.
3.3 Vertical transportation
A QTC40 jack-up tower crane with arm length r = 40m is set on the north side of axis (C) between A 1-A2, which is used for vertical transportation of formwork reinforcement and other materials in the main frame construction stage.
A HB60A concrete delivery pump is set up at the site to pour beam and slab concrete.
In the stage of retaining wall masonry and decoration, a gantry is set between Axis (E) ~ (F) on the east side of Axis ④ and Axis 6-7 on the north side of Axis (D) for transporting materials and equipment.
3.4 Specific arrangements
Commercial concrete is transported to the site by concrete tanker, and the pouring is mainly by pumping, supplemented by tower crane lifting.
3.5 template system
The foundation adopts composite steel formwork, the foundation ground beam adopts composite steel formwork, the elevator shaft adopts cylinder formwork, the column formwork adopts adjustable shaped formwork, the frame beam and floor slab adopt composite steel formwork, the floor slab formwork is paved with plywood and pasted with adhesive tape, the support system adopts steel pipe fastener scaffold, and the beam-column joints adopt special formwork.
3.6 reinforcement arrangement
A steel bar processing production line is set up on site for butt welding and straightening of steel bars. Cutting, forming, etc. ; Steel bars above φ 14 are connected by flash butt welding and electroslag pressure welding.
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