1. Construction background (1)Project Overview: The project is an auto parts factory. The original construction plan has completed the construction of PHC piles for the foundation of the factory building and the construction of the foundation pit. Du...

1. Application prospects In recent years, as the country has vigorously promoted the construction of super-large infrastructure projects (such as airports, wharfs, land reclamation, etc.), higher requirements have been put forward for the constructio...

1. What is mechanical resonance? Mechanical resonance refers to the phenomenon that the amplitude of the system increases significantly when the frequency of the excitation of the mechanical system is close to a certain natural frequency of the syste...

As PHC concrete prefabricated pipe piles are used more and more in the construction of large-scale engineering foundations, especially the soil layer above the medium and coarse sand is used in the existing construction methods such as static pressur...