What are the pre-construction plans of the hotel?

I. Project Overview Crowne Plaza Boao Hefei is a super high-rise building, located in the northeast of the intersection of Huangshan Road and Erhuan West Road in Hefei. Invested and built by Anhui Boao Real Estate Investment and Development Co., Ltd., the hotel has a total construction area of 969 13m2, of which the basement construction area is 27378m2, with 29 floors above ground, 3 floors of podium and 2 floors underground, with a total height of about126.15m; Among them, 0.000 in the hotel room is equivalent to an absolute elevation of 48.500m; The supporting residential building of the hotel, the indoor 0.000 is equivalent to the absolute elevation of 47.300m ... The structural form of this project is: the main building of the hotel is a frame-core tube structure, and the podium is a frame structure. The seismic grade of this project is: the main building (including basement) is Grade II, the podium (including basement) is Grade III, the basement with no main body on the upper part is Grade III, the basement waterproof grade distribution room is Grade I, and the rest are Grade II. The design service life of the building is classified into three categories, 50 years. In this project, horizontal construction joints are set for the large pile caps and bottom plates according to the design requirements, and the horizontal construction joints are set at 500mm above the foundation. Bottom plate, pile cap and hole pile are poured at one time. No construction joints are left, which meets the specification requirements. The large pile cap of the main building is divided into two large pile caps with a thickness of 2450 ~ 5200 by the expansion steel belt. The area of large cap and bottom plate can reach 1890 M2, and the volume is 3470M3. It belongs to mass concrete, the concrete strength is C40, and commercial concrete is used. The overall sequence of concrete pouring is: pouring from the lowest point (east) of the large pile cap to-4,200, pouring from the middle expansion reinforcement belt with a thickness of 50cm, then pouring concrete in layers extending from east to west, with a thickness of less than 50cm, and pouring from the middle expansion reinforcement belt with a thickness of 50cm, which is carried out in turn, using platform pumps and truck pumps for horizontal and vertical transportation. Second, solve the hydration heat of large pile caps 1. The maximum thickness of concrete for large pile caps is 5200, and the FEX corrugated pipe with a length of 100 m (diameter of 50 ㎜) is used for heat dissipation, tap water and cold water circulation. 3. Preparation before concrete construction: 1, machinery and equipment (1), concrete pouring for the large pile caps of the main building. Adopt a platform pump, a car pump, five plug-in vibrators (including two standby vibrators), six vibrators (including three standby vibrators), 10 shovel, two trowels and corresponding electric boxes and wires. 2. Staffing (1), concrete pouring of large pile caps, and two concrete pouring teams of 30 people are planned to be put into construction; The reinforcement class, carpentry class and hydropower class are equipped with two guards respectively (the rest of the staff stay in the dormitory and stand by at any time, and immediately put into emergency rescue once there is danger); Mechanic, electrician, tower crane driver, etc. (2) In the process of concrete pouring, the management personnel are responsible for the following tasks: site construction chief commander: Wu (responsible for concrete mixing, total quality control, inter-team coordination and external coordination); On-site constructors: Wang Huibin and Zhang Xiang (responsible for pump operation, quality control and early coordination between teams); Chen Zhijun and Wu Hangfei change shifts. Lou Kai is responsible for floor concrete surface elevation control Tester: Yang Yunfeng (responsible for concrete slump test, block making, formwork removal, such as curing room) Documentary: Li Chaohui (responsible for the collection and inspection of concrete mix list, certificate and other materials) 3. Site preparation (1), contact the commercial concrete supplier in writing two days in advance to clarify the technical requirements such as concrete strength grade, supply time and quantity; Contact the environmental protection department and the transportation department to do a good job of night construction permit; (2) The day before concrete pouring, reinforcement acceptance, elevation layout, fixed pump pipe layout and reinforcement installation shall be completed; (3) The day before concrete pouring, the site road shall be cleaned, leveled and the position of pump truck shall be reinforced, temporary water and electricity shall be in place (the site temporary electricity utilization shall be comprehensively inspected to repair the deficiencies), and all kinds of tools and personnel shall be ready; (4), to participate in the cast operation of the builder, team leader, vibrator, steel bar guards, template guards, etc. Construction plan and technical disclosure, clear their respective tasks and responsibilities. Four, the main building basement slab pile cap construction 1, the overall concrete pouring sequence adopts commercial concrete, which is provided by Hefei Construction Engineering Concrete Ready-mixed Factory, the concrete slump is controlled at 140+20 mm, and the concrete is vibrated by an internal vibrator, which is screeded manually. The concrete of bottom plate and bearing platform is planned to be poured from south to north, and transported to the pouring site by fixed pump. The total pouring volume is about 3470M3, and the pouring time is about 32h. The concrete truck will enter and exit from the gate in the northwest corner. It is planned to use ground pump and 48M truck pump to pour beam and slab concrete, and the pouring time is about 32h. The ground pump is provided with a temporary passage for steel bars in the south podium (above), the automobile pump is provided with a temporary passage between the main building (below) and the north podium, and the concrete truck enters and exits from the northwest corner gate. 2, beam slab concrete pouring (1), beam slab concrete pouring from the middle to both ends at the same time, first pouring ground beam, after being around the plate beam concrete pouring to the bottom of the plate, then pouring slab concrete. Concrete pouring shall be carried out continuously. In principle, there should be no construction joints. In case of temporary power failure and other special circumstances, it must be handled in the form of construction joints. (2) When pouring concrete at the intersection of the ground beam and the primary and secondary beams, due to the dense reinforcement, the reinforcement is thick and numerous. Therefore, when pouring concrete in this part, it is necessary to pay attention to the shortcomings that concrete is not easy to cut and vibrator is not easy to vibrate and compact. When necessary, concrete with the same strength grade but finer stone particle size will be poured in this part. At the same time, replace the vibrator with a club head with a smaller diameter (such as a club head with a diameter of φ30) and pave it by manual vibration. (3), flanging concrete pouring must be carried out before the initial setting of the lower concrete. When pouring, the flanging formwork shall not be impacted to avoid the formwork shifting. (4) When pouring floor concrete, the pouring equipment and personnel shall not trample the steel bar at will, and the steel bar on the trampled floor shall be pulled up in time to ensure the correct position of the steel bar.

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