Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to the technical field of building foundation and foundation construction equipment, and particularly discloses a precast pile sinking construction method. According to the main technical scheme, a benchmark of a semi-permanent pile position control net point is arranged on a construction site, a pile position is measured and placed, namely, a pile machine is prepared in place; the pile machine and a column hammer impact mechanism are moved to the pile position, the pile sinking insertion perpendicularity is guaranteed, a column hammer can be inserted into a pile hole, in other words, the pile machine and the column hammer impact mechanism are in place; after the pile machine is in place, a power hydraulic system is started to work, a pipe pile is clamped by a jaw to carry out embracing and pressing, and the pipe pile is vertically buried into soil, namely static pressure pile sinking is carried out; a column hammer mechanism is used for controlling the column hammer to impact a bottom soil layer of the pipe pile in the pile hole to damage the bottom soil layer of the tubular pile, so that the pipe pile can smoothly penetrate through a hard soil layer, namely the column hammer impact; and the static pressure pile sinking and the column hammer impact are repeated until the pile pressing is completed. According to the construction method, on the basis of the static pressure pile sinking process, after the hard soil layer at the bottom of the pipe pile is punched and damaged by utilizing the column hammer to punch and expand in a pipe pile core, the continuous static pressure pile sinking can be realized, so that the purpose of pile sinking to reach the designed pile bottom elevation is realized.
本发明属于建筑地基与基础施工装备技术领域，具体的讲公开了一种预制桩沉桩工法。其主要技术方案：在施工场地设置半永久性的桩位控制网点的水准点，测放桩位，即桩机就位准备；移动桩机和柱锤冲击机构至桩位，保证沉桩插入垂直度以及柱锤能够插入桩孔，即桩机和柱锤冲击机构就位；桩机就位后，启动动力液压系统工作，将钳口夹紧管桩实施抱加压桩，使管桩垂直入土，即静压沉桩；利用柱锤机构控制所述柱锤在所述桩孔内对管桩底土层进行冲击，破坏管桩底土层，使管桩能顺利穿过硬质土层，即柱锤冲击；往复所述静压沉桩和柱锤冲击，直至压桩完毕。由于该工法是在静压沉桩工艺基础上，在管桩芯内利用柱锤冲扩将管桩底硬土层冲切破坏后，即可以实现静压沉桩的继续，从而实现沉桩达到设计桩底标高的目的。
The invention belongs to the technical field of building foundation and foundation construction equipment, and particularly discloses a precast pile sinking construction method. According to the main technical scheme, a benchmark of a semi-permanent pile position control net point is arranged on a construction site, a pile position is measured and placed, namely, a pile machine is prepared in place; the pile machine and a column hammer impact mechanism are moved to the pile position, the pile sinking insertion perpendicularity is guaranteed, a column hammer can be inserted into a pile hole, in other words, the pile machine and the column hammer impact mechanism are in place; after the pile machine is in place, a power hydraulic system is started to work, a pipe pile is clamped by a jaw to carry out embracing and pressing, and the pipe pile is vertically buried into soil, namely static pressure pile sinking is carried out; a column hammer mechanism is used for controlling the column hammer to impact a bottom soil layer of the pipe pile in the pile hole to damage the bottom soil layer of the tubular pile, so that the pipe pile can smoothly penetrate through a hard soil layer, namely the column hammer impact; and the static pressure pile sinking and the column hammer impact are repeated until the pile pressing is completed. According to the construction method, on the basis of the static pressure pile sinking process, after the hard soil layer at the bottom of the pipe pile is punched and damaged by utilizing the column hammer to punch and expand in a pipe pile core, the continuous static pressure pile sinking can be realized, so that the purpose of pile sinking to reach the designed pile bottom elevation is realized.
本发明属于建筑地基与基础施工装备技术领域，具体的讲公开了一种预制桩沉桩工法。其主要技术方案：在施工场地设置半永久性的桩位控制网点的水准点，测放桩位，即桩机就位准备；移动桩机和柱锤冲击机构至桩位，保证沉桩插入垂直度以及柱锤能够插入桩孔，即桩机和柱锤冲击机构就位；桩机就位后，启动动力液压系统工作，将钳口夹紧管桩实施抱加压桩，使管桩垂直入土，即静压沉桩；利用柱锤机构控制所述柱锤在所述桩孔内对管桩底土层进行冲击，破坏管桩底土层，使管桩能顺利穿过硬质土层，即柱锤冲击；往复所述静压沉桩和柱锤冲击，直至压桩完毕。由于该工法是在静压沉桩工艺基础上，在管桩芯内利用柱锤冲扩将管桩底硬土层冲切破坏后，即可以实现静压沉桩的继续，从而实现沉桩达到设计桩底标高的目的。
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