Devices for steel pipe pile anti-slippage with shock-absorbing airbags and methods for using the same

A device for steel pipe pile anti-slippage with a shock-absorbing airbag, comprising:

• a housing;
• and
• a cover plate, an internal locking mechanism, and a shock-absorbing airbag device that are disposed inside the housing;
• wherein
• the housing includes, from bottom to top in sequence, a lower outer sleeve, an intermediate chamber, and an upper cylinder body;
• the lower outer sleeve is sleeved onto a steel pipe pile to be constructed;
• the cover plate is disposed inside the housing and located at a top of the lower outer sleeve, and a sealing ring is disposed on an inner wall of the lower outer sleeve;
• the intermediate chamber is located above the cover plate;
• the upper cylinder body is located above the intermediate chamber;
• and an upper port of the upper cylinder body is configured to mount a vibratory hammer device;
• the internal locking mechanism includes a driving hydraulic cylinder and a plurality of force arm mechanisms driven by the driving hydraulic cylinder;
• the driving hydraulic cylinder is fixedly mounted in the intermediate chamber of the housing, and a drive rod of the driving hydraulic cylinder extends downward through the cover plate;
• the driving hydraulic cylinder is configured to synchronously drive the plurality of force arm mechanisms to spread outward and upward, causing the force arm mechanisms to abut against a bottom surface of an inner flange ring on an inner wall of an upper port of the steel pipe pile, such that the inner flange ring on the inner wall of the upper port of the steel pipe pile is clamped between the cover plate and the force arm mechanisms;
• one or more first through holes are formed in the cover plate and one or more second through holes are formed in a side wall of the intermediate chamber;
• each of the one or more first through holes in the cover plate is in fluid communication with one of the one or more second through holes in the side wall of the intermediate chamber via a connecting pipeline to form a water-permeable channel;
• a self-adaptive closing valve is disposed in the water-permeable channel, and the self-adaptive closing valve is configured to adaptively control an open state and a closed state of the water-permeable channel based on a sinking state of the steel pipe pile;
• the self-adaptive closing valve includes a valve wall, and a conical valve plug, a return spring, and a support plate that are installed inside the valve wall;
• a front end of the valve wall is a conical wall with an opening, and a rear end of the valve wall is a cylindrical wall;
• the support plate is fixedly connected to the cylindrical wall of the valve wall;
• the conical valve plug is mounted on the support plate via the return spring;
• and when the return spring is in a natural state, the conical valve plug is separated from the opening of the conical wall;
• and
• the shock-absorbing airbag device is disposed at a bottom of the cover plate;
• the shock-absorbing airbag device includes a mounting frame, a baffle plate, and the shock-absorbing airbag;
• the mounting frame is connected to the bottom of the cover plate;
• the baffle plate is disposed on the mounting frame and located below the internal locking mechanism;
• and the shock-absorbing airbag is installed inside the mounting frame below the baffle plate.