T/ZDL 021-2023 Active

Main Technical Content: 4. Foundation Construction 4.1 Overview The part of the tower buried underground is called the tower foundation. According to the different materials of the tower, the foundation of overhead power lines can be divided into three categories: concrete tower foundations, iron towers (including narrow-base towers), and steel pipe tower foundations. This chapter introduces the construction and process requirements, acceptance points, etc. of the tower foundation of overhead power lines. 4.2 Concrete Tower Foundations 4.2.1 Construction Process 4.2.2 Preparation for Construction 4.2.2.1 Preparation of Machinery/Tools (1) Prepare a list of construction machinery and tools entering the site, along with inspection reports, test reports, safety certificates, specifications, models, and other relevant materials, and submit them for review. (2) Main machinery and equipment: generators, mobile distribution boxes, air compressors, etc. (3) Main tools: levels, theodolites, steel tapes, digging spoons, iron picks, hoes, shovels, etc. 4.2.2.2 Preparation of Construction Personnel (1) Construction personnel (including subcontractors) must undergo safety and technical training and pass the exam before being reported to the supervisor and the project department of the owner for filing. Special trades personnel must hold certificates to operate. (2) According to the approved construction schedule, coordinate the deployment of construction forces, and ensure that the number of construction personnel of each trade entering the site meets the needs of the construction. (3) Temporary protective measures and other safety measures: the construction area shall be subject to closed management, and safety fences shall be used for protection, isolation, and closure. The pit mouth shall be covered. At night, warning lights shall be hung. (4) Technical, safety, and quality requirements: (1) Complete the design, safety technical briefing, and c