挖孔桩施工组织（Excavation pile construction organization）.docVIP

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挖孔桩施工组织（Excavation pile construction organization）.doc

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挖孔桩施工组织（Excavation pile construction organization）

挖孔桩施工组织（Excavation pile construction organization） Construction scheme of artificial excavation pile I. project overview This is a self-describing Ii. Engineering geology and hydrogeological conditions This is on the geological report Ii. Construction preparation: 2.1 materials and main equipment: 2.1.1 cement: ordinary Portland cement, no. 325 ~ 425 2.1.2 sand: local sand, not more than 5%. 2.1.3 stone: the diameter of the protective wall is 0.5 ~ 1.5 cm. The pile core concrete USES a particle size of 2 ~ 3cm gravel. 2.1.4 water: drinking tap water. 2.1.5 the early strength agent shall be selected through the test, and the fly ash admixture shall be determined according to the rules of the laboratory. 2.1.6 reinforcement: the level and diameter of the steel bar conforms to the design requirements, and there are the factory certificate and the retry report. 2.1.7 shall generally be equipped with mark up, the hoist group or electric hoist, trolley or skip, picks, spade, shovel, brazing, line drop, the fixed pulley group, guide pulley block, concrete mixer, bucket, chute, catheter, vibration rods, brazing, coarse hemp rope, wire rope, safety activities cover plate, waterproof lights (low voltage 36 v, 100 w), electric welding machine, ventilation and oxygen equipment, lift pump, 60 concrete pump, wood jigger, gym, helmets, belts, etc. 2.1.8 template: combined steel mould, curved tool type four (or eight) assembly. Fixtures, hooks and spare parts. Wood, wood, etc. 2.2 operating conditions: 2.2.1 excavated pile-hole, the wall support shall be conducted according to the characteristics of the soil quality and the distribution of ground water according to the geological survey report, and the reasonable division of labor and special attention should be made. 2.2.2 before excavation, the site should be completed and completed. The ground, underground cable, pipeline, old buildings, equipment foundation and other obstacles have been eliminated. Temporary facilities such as