2. Performance comparison between hollow square pile and pipe pile
Compared with other pile types, especially prestressed concrete pipe piles, hollow square piles have the following outstanding advantages:
① The surface area is large and square or polygonal, and the angle of repose between the pile and the soil in the soil layer is much larger than the circular surface, which means that the hollow square pile can obtain greater bearing capacity than the pipe pile under the same geological conditions, saving a lot of foundation funds for the project;
② By comparison, the bearing capacity of 350 hollow square piles is equivalent to that of 500 outer diameter thick wall pipe piles, and the cost per KN bearing capacity is lower than that of prestressed concrete pipe piles, which means that designers can select square piles under the same design bearing capacity, while the market price of 350 hollow square piles is less than that of 500 outer diameter thick wall pipe piles, which can save a lot of material costs;
③ The theoretical calculated shear resistance of square pile is 2-3 times of that of the same pipe pile. According to the actual test of Japan's Ministry of Construction, it is 4.5 times of that of the pipe pile. This shows that the seismic performance of hollow square pile is very superior, and it is worth popularizing in earthquake prone areas, high-rise buildings, and building foundations with large areas of basements;
④ The hollow square pile inherits and develops the low construction damage rate of the original concrete square pile. The high-strength concrete with a square head has better impact resistance than the pipe pile, and a much smaller damage rate of the pile head; The square has a larger welding perimeter than the round, fully ensuring the effective welding strength between each section of the pile, greatly reducing the joint desoldering or displacement of the square pile in the construction, and making the pile quality better;
⑤ The shape of square pile is easier to develop a non welded quick connector, which can truly achieve all-weather construction, and construction is faster, which can avoid cracking of welded pile head in high groundwater level.
Pinghu Huafeng Cement Products Factory is a large enterprise engaged in cement products for a long time Cement brick The manufacturer specializes in producing cement pipes, U-grooves, square piles, cement piles, road bricks Cement grass planting brick 、 Cement tile Concrete square piles, solid square piles, cement sewer pipes, concrete cement pipes, curbstones, curbstones, and other cement products, welcome new and old customers to consult and negotiate! //www.jxhfslzp.com Service hotline: 130-9562-2833 (Manager Yu)
