Shenzhen City Monthly supervision report of a residential building project
2. Project image progress of this month 1) Earth excavation and foundation pit support a. At the end of last month, the earth excavation and foundation pit support of foundation pit have been basically completed (no construction has been carried out at other intersections and lanes); b. At the beginning of this month, the excavation and support of intersections and driveways were started and completed in the evening of November 13, 2006. The construction unit was demobilized; c. From November 10 to 11, the earthwork excavation construction unit cleaned the foundation pit and handed over the site to the pile foundation construction unit; 2) Pile foundation a. On November 12, the construction machinery of the pile foundation construction unit entered the site; b. On November 15, the installation and commissioning of pile foundation construction machinery were completed. Pile test shall be conducted in the afternoon of November 16; c. The construction of pile foundation officially started on November 18, and 174 Φ 600mm prestressed pipe piles have been completed by the end of this month (November 30); 3. Project progress 1) Comparison between the actual completion of this month and the planned progress: compared with the original plan, the progress of foundation pit earthwork excavation and support works is slow, and the construction period is delayed for three days. The mobilization of pile foundation is affected. The construction progress of pile foundation is slow this month, which cannot meet the requirements of the construction period specified in the contract; 2) Analysis on the progress completion and the effect of measures taken: the weather conditions in this month are good, because the progress of the pile foundation construction unit is slow, it failed to meet the progress requirements of the owner and supervisor on the pile foundation of this project. The main reasons are as follows: a. The main on-site management personnel did not play a key role in the project construction management, organization, coordination, overall planning, on-site arrangement, process arrangement, etc., and did not have a systematic arrangement, so their ability was average; b. The installation and commissioning of pile foundation construction machinery took too long, and the construction setting out and positioning were not arranged in time, which caused the pile foundation construction machinery to be idle and affected the pile foundation construction; 4. Project quality control 1) Quality analysis: the construction quality of this month basically meets the design and specification requirements, and the raw materials (mainly concrete) can be submitted for inspection according to the specification requirements, and the concrete can be cured regularly; The foundation pit support works (including soil nails, anchor cables, concrete retaining walls, etc.) meet the requirements of the construction organization design and specifications. In the construction of pile foundation, there are some phenomena that the construction is not in accordance with the design and specification requirements; 2) Quality problems and countermeasures in construction Pile foundation (static pressure prestressed pipe pile) project; b. In the process of pile extension, the welding was not conducted in two times according to the specification requirements, and the welding was completed in one time. Weld slag inclusion, mud, sand and other sundries on the surface of pile head steel plate before welding are not cleaned up, which affects the welding quality; c. The dead time after the pipe pile welding is completed does not reach the required time (the dead time is required to be no less than 2~3 minutes), resulting in weld cracking and affecting the quality of pile splicing; 5. Safe and civilized construction is mainly reflected in the following aspects: a. The construction area and living area shall be tidy, tidy, orderly, civilized and sanitary. Machines, tools, materials, etc. shall be stacked neatly as required. Domestic garbage shall be cleaned and removed by special personnel, and sanitation and epidemic prevention work shall be done to ensure the living environment of construction personnel. The current construction site does not comply with the above requirements; b. The construction site did not take the "three treasures", "four entrances" and edge protection measures as required, and did not hang obvious signs and warning signs as required; 6. Office data 1). Data not submitted as required: a. The business license, work safety license and enterprise qualification of the construction unit are not stamped with the official seal; b. The safety production assessment certificate and special work operation certificate of the three types of personnel of the construction unit have not been submitted; c. The construction organization design scheme submitted by the construction unit for approval has not been signed and sealed About 45000 words, compiled in November 2006
