Abstract: The present disclosure discloses a method for analyzing dynamic response and dynamic impedance of pile groups and a system therefor. The influence of wave load on pile groups is taken into account to study the dynamic stability of pile groups, the foundation reaction force is calculated by using an improved Vlasov foundation model, the dynamic stability equation of active piles and passive piles is established by combining an interaction factor method and a matrix transfer method, the dynamic interaction factor between adjacent piles and impedance of pile groups are obtained, and the stability of pile groups is analyzed by parameters. Through research, it is found that the existence of wave load makes the dynamic response of pile groups increase obviously; the dynamic impedance and the interaction factor of pile groups are mainly affected by soil parameters, but the existence of wave load will affect some soil parameters.

Abstract: A silty floating mud collection device, which includes a drive cylinder, an outer sleeve, a sampler barrel, an lug cover plate, a turning cover, a control ring and a control rod, where the drive cylinder includes a cylinder liner, a piston and a piston rod; the outer sleeve is fixedly connected below the cylinder liner; the sampler barrel is detachably installed inside the outer sleeve; the lug cover plate is fixedly connected to a lower end of the piston rod, and can close an upper-end opening of the sampler barrel; the turning cover is turnably installed at a lower end of the outer sleeve, and can close a lower-end opening of the sampler barrel; the control ring is located below the sampler barrel, and is used to block the turning cover which is in an open state; and an upper end of the control rod is connected to the lug cover plate, and a lower end of the control rod is connected to the control ring.

Abstract: A silty floating mud collection device, which includes a drive cylinder, an outer sleeve, a sampler barrel, an lug cover plate, a turning cover, a control ring and a control rod, where the drive cylinder includes a cylinder liner, a piston and a piston rod; the outer sleeve is fixedly connected below the cylinder liner; the sampler barrel is detachably installed inside the outer sleeve; the lug cover plate is fixedly connected to a lower end of the piston rod, and can close an upper-end opening of the sampler barrel; the turning cover is turnably installed at a lower end of the outer sleeve, and can close a lower-end opening of the sampler barrel; the control ring is located below the sampler barrel, and is used to block the turning cover which is in an open state; and an upper end of the control rod is connected to the lug cover plate, and a lower end of the control rod is connected to the control ring.