Tower crane work plan was implemented
First, project survey
******** 1 project, located in the eastern city **** ** City, the north side of the channel has been built on the 6th, east to the 27th Avenue, west side of the road to a plan. By ******* Development Company to construct ,******* Design Institute designed the construction of ,******* ,******* Construction Company Project Management Company Supervision, ** ***** Survey Institute survey, basement foundation pit design survey by the Institute of Design *******. ** Our construction of sections, including the 1 #, 2 #, 3 #, 8 #, 10 #, 11 #, 12 #, 13 # Building, 1 ~ 3 # F, 28 ~ 32 layers, height of 98.2 m ; 8 #, 10 # Building 14 ~ 18 layers, height of about 55 meters, 11 ~ 13 # F 28 layer is about 82 meters high, the basement floor. The whole project is the construction of vertical transportation in a lot of work, materials, transport turnover is also a great project combining the Department of the height of buildings, structures, construction site environment, considering the period, lifting capacity, machine type and other factors, reasonable arrangements the number and locations of machines, scheduling a total of 7 sets of tower crane: 1 # Building in the north 1-34/1-N (located in the basement) the installation of a tower crane QTZ60; 2 # F 2-10/2-H ( located in the basement office) the installation of a tower crane QTZ60; 3 # F 3-32/3-N (basement) the installation of a tower crane QTZ60; 8 # F 8-26/8-R (located in the basement) to consider installing a QTZ315 tower crane; 10 # F 10-26/10-A (located in the basement) to consider the installation of a tower crane QTZ60; 11 # Building installation of a tower crane QTZ60, 13 # Building 13-15/13-P (in the basement outside) the installation of a tower crane QTZ60, 13 # 12 # F, F, Tower Crane into account.
Second, the basic design of tower crane
1, Geological Analysis
Institute of Geological Survey under ********* survey data, the soil layer in turn as follows, 1-1, 1-2 Filled backfill ,2-1 ,2-2 silt silt, 2 -3 silt, silt folder silt ,2-4 ,4-1 ,4-2 silt silt silt folder clay, silty clay 5 ,6-1 ,6-2 silty clay silty sand fine sand, 6-3. Soil conditions from this project, earthwork excavation pile support and the impact of factors such as slope protection considerations, tower crane with pile foundation, pile cap support for the bored pile to ensure the stability of Tower Crane Foundation, the basis of capacity to meet the requirements. Bored depth according to soil conditions, consider 40 to 45 meters in diameter and 800, according to cap size, pile cap arrangement of four piles, each corner arrangement, pile center distance of 3000mm.
2, cap base and cushion design
According to geological conditions, combining with manufacturers to provide the basis for construction requirements, cap use 4820 mm × 4820mm × 1250mm (length × width × height), concrete strength requirements of not less than C30, C30 based on reinforced concrete pile used within the allocated Ф20 @ 183 double two-way, vertical and horizontal direction at intervals of two longitudinal bars located a Ф20 stretching. According to soil conditions, in the basement outside the tower crane foundation platform consists of plain concrete 100 thick C15 and 300 thick stone cushion cushion.
3, pile foundation design
Pile foundation with pile diameter Ø800mm pile, located in the basement outside the 40 m long crane pile, pile top elevation of -2.00 m, bottom elevation of -42.00 m piles, pile caps embedded in the top 100mm, pile reinforced case : longitudinal bars 8Φ20, cage length L = 30.70 m, spiral hoop Ø8 @ 200, pile top 2 meters encryption Ø8 @ 100,