孔桩垂直度检查方法（Method for checking verticality of Bored Piles）.doc

孔桩垂直度检查方法（Method for checking verticality of Bored Piles） Inspection method for verticality of bored piles -- Method for checking verticality of Bored Piles Anonymous questions 2009-05-05 20:00:29 release .2 engineering academic answer.30009 2009-05-05 21:09:19 | 0 people think the answer is good | 0 people think the answer did not help . The construction of bored pile is different from that of retaining wall, such as mud wall protection method and full pipe construction method, two kinds. 1) mud protection wall construction method Impact drilling, punching and drilling, rotary drilling, drilling and so on, mud wall construction method can be used. The construction method is: land leveling, slurry preparation, buried steel tube, laying work platform, installation and positioning, drilling drilling, hole cleaning and inspection hole quality, reinforcing cage, decentralization of pouring underwater concrete to pull out the cylinder, check the quality of nursing. Construction sequence (as shown) (1) construction preparation Construction preparation includes selection of drilling rigs, drilling tools, site layout, etc.. The drilling rig is the main equipment for the construction of bored piles. It can be chosen according to the geological conditions and the application conditions of various drilling machines. (2) installation and location of drilling machine; If the foundation of the drilling machine is installed, if it is not stable, the slope of the boring machine, the inclination of the pile and the eccentricity of the pile are easy to be affected, so the foundation should be installed firmly. The slope of the foundation of the formation is relatively soft, can be bulldozed, reinforcement plate in the pad or sleeper. In order to prevent the pile position allowed construction is very important to the set the center position and the correct installation of drilling machine, the rig drilling machine, the first use of the power drill and near the cage with the drill pipe