Fortune Telling Collection - Ziwei fortune-telling - What are the reasons for the cracking of pipe pile head?
What are the reasons for the cracking of pipe pile head?
It is necessary to drive the pipe pile into the ground during construction, but in the process of piling, sometimes the pile head of the pipe pile is broken or damaged for various reasons. The reasons for pipe pile breakage may be:
1, pipe pile quality problem
There are some problems in the quality of pipe piles, such as insufficient concrete strength, cavities and honeycombs inside the pile head, and slurry leakage at the joints on both sides of the pipe pile head, which may lead to the cracking of the pile head during construction.
2. Improper construction operation
During the construction of pipe pile, the uneven processing of pipe pile section and uneven stress will lead to the damage of pile head. In addition, uneven buffering medium of the equipment between the pipe pile section and the pressure plate or excessive force during construction may also cause damage to the pile head. Such as eccentric hammering, untimely replacement of hammer pad wire rope, improper control of hammering gear, etc. When hammering occurs in construction, it is easy to damage the pile head.
3. Geological problems
Blind construction under the condition that the actual geology is inconsistent with the geological prospecting data is likely to lead to the penetration in the process of pile sinking pushing back the pile tip, which will lead to the damage of the pile head.
4, pile top protection measures are not in place.
The protection measures of the pile top itself are not in place, and the deformation of the pile pad is uneven, which is easy to cause eccentric hammering and fracture of the pile top.
The above are several common reasons for the damage of pipe pile head, so what should I do if the pipe pile head is damaged?
Second, the concrete pipe pile head treatment scheme
When the concrete pipe pile head is damaged, there are two main treatment schemes:
1, protect the pile head from truncation.
Find out the elevation position of pile top, cut the pile with pile cutter or other methods, and cut off the pile head. After cutting off the pile head, level the pile top from all sides to the design elevation of the pile top with steel drill and hammer. In the process of pile cutting, pay attention to avoid transverse impact of heavy hammer or heavy object on the pile body to prevent transverse fracture of the pile body below the elevation of the pile top.
2. Pile extension head
If the pile breaks below the design elevation during the excavation of the foundation trench and the removal or construction of the pile head, it can be remedied by connecting the pile head to the design elevation of the pile top, and attention should be paid to protecting the soil between piles when connecting piles.
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