Can prestressed pipe piles be compared with square piles in cost?

The selection of 300 prestressed square piles can completely replace ￠400 pipe piles in mechanical properties. At the same time, the use of small pile diameter foundation pile can greatly improve the construction speed and the influence of soil squeezing, and its performance is even better than that of pipe pile. At the same time, from the economic point of view, compared with ￠400 pipe pile, 300 prestressed square pile can save about 8 yuan/meter. If it is a pile foundation, according to the technical specification of pile foundation, the center distance between piles should not be less than 3.5 times of the length of the outer side of the pile (which can save about 43% of the cost of the cap). It is estimated that a foundation cost of100000 yuan can save about 2.5 million yuan, which reflects the high cost performance of prestressed square piles. Compared with ￠Q500 pipe pile, 400 prestressed square piles can save about 15 yuan/meter. If it is a pile foundation, according to the technical specification of pile foundation, the center distance between piles should not be less than 3.5 times of the outer length of piles (which can save about 36% of the cost of bearing platform). According to this estimate, if the cost of a foundation is 15 yuan/meter,