Process sequence:
Weighing → pile driver in place → hanging pile in place → buckling pile cap and unhooking with drop hammer → knocking → formal driving (pile connection, pile cutting, static and dynamic load test, pile cap construction).
Key points:
(1) hit low with a heavy hammer, and then tap it first;
(2) Pay attention to the change of penetration and record the piling situation (times, hammering per meter, pile top elevation, final penetration ...);
(3) If any abnormal situation is found, the beating shall be suspended, and it shall be studied and handled with relevant units.
A sharp change in permeability
Sudden inclination, displacement and rebound of pile body
Serious cracks appear in the pile body or the top of the pile breaks.
(4) Pile extension method: slurry anchor method-paving and pouring sulfur mortar and inserting steel bars;
Welding method-welding of embedded parts;
Mechanical connection method-epoxy resin, card connector
The above is the introduction of piling technology provided by Zhong Da Consulting for builders. For more knowledge of architectural terminology, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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