Study On Construction Technology Of Large Diameter Pouring Pile

Punching pile is the use of punching machine with a knife-edge of the hammer by the impact of falling free fall into the soil,the crushed rock,mud mixed mud into the hole wall,part of the slag use of mud circulation hole Way discharge hole in the hole hanging steel cage,and then pouring concrete to form the pile.Large-diameter punching pile form is widely used in the early foundation of the bridge,with the development of the times,the popularity of ultra-high-rise buildings,large-diameter punching pile foundation forms are also beginning to apply in the housing construction.Based on the construction of Punching Pile in Panyu Agile Square Project,the construction technology of 1200 mm common diameter cast-in-place pile and 2400 mm large-diameter punching pile is compared.The selection of the number of advanced drilling points,The choice of the bunker and the choice of the pipe and other key aspects of a comprehensive analysis of the study.In this paper,a large amount of data is used to contrast and analyze the difference of large-diameter piles in each construction process and common diameter piles.Combined with the problems encountered in the actual construction,the difficult and special points of large-diameter piles are solved to form a complete set of practical Construction Technique of Cast-in-place Pile with Diameter.According to a series of comparative analysis,it is recommended that in the 2400 mm large-diameter punching pile,advance drilling should be carried out at least 3 points for each pile exploration,to ensure the accuracy of advanced drilling reports;2400mm in the selection of large-diameter punching punching pile Choose 8 tons of high-intensity five-star or six-star hammer,you can ensure that the footage of speed while ensuring that wire rope wear will not be too fast;compare the combination of clearance hole selection,in 2400 mm large diameter punching pile,the first hole Using the positive cycle of the hole,the second hole with pump suction anti-loop-type clearance,both to ensure construction quality and safety,speed up the construction schedule,but also reduce construction costs;in the concrete,the use of special capacity is greater than about This paper introduces a series of construction techniques for large-diameter perforated cast-in-place piles,which can provide guidance for the construction of large-diameter punched-cast-in-place piles in housing construction projects..