PCC pile, that is, large diameter cast-in-place concrete pipe pile, is abbreviated as PCC pile in English. This technology is a patented soft foundation reinforcement technology independently developed by Professor Liu Hanlong from the Institute of Geotechnical Engineering of Hohai University on the basis of a large number of engineering practices, and passed the expert appraisal organized by the Science and Technology Department of Jiangsu Province, and has obtained the national patent (ZL0 127365438+). CN 1367296A), and there is the national technical specification for cast-in-place concrete large-diameter pipe pile composite foundation JTJ/T2 13-20 10. This technology absorbs the advantages of prestressed pipe pile, vibrating pipe pile and vibrating sinking die thin-walled cutoff wall, with simple construction technology and strong operability, and is a new type suitable for soft soil areas. And has great popularization and application value. PCC pile technology is an efficient and economical (energy saving and emission reduction) high-quality pile technology in the construction industry. The bearing capacity of PCC pile can be increased by more than 50% under the same concrete dosage (i.e. the same cross-sectional area). Under the same bearing capacity, PCC pile can save more than 50% concrete consumption and reduce the energy consumption of construction machinery by 50% (small soil squeezing effect).
The cost of PCC pile is low, and the cost of flexible pile is low, but the reinforcement effect of rigid pile is good.