Multi-directional broadband tuned mass damper and design method thereof

A multi-directional broadband tuned mass damper comprising:

• a rigid vibration damping frame (1), and two ends of the rigid vibration damping frame (1) in a length direction are configured to connect to a sling,
• wherein the rigid vibration damping frame (1) is provided with at least one first damping structure (2) and at least one second damping structure (3) distributed along the length direction at intervals, and an extension direction of the at least one first damping structure (2) is the same as that of an extension direction of the at least one second damping structure (3);
• wherein the at least one first damping structure (2) is provided with a control main frequency;
• the at least one second damping structure (3) is provided with two control main frequencies;
• and the control main frequencies of the at least one second damping structure (3) are higher than each control main frequency of the at least one first damping structure (2);
• wherein the at least one second damping structure (3) comprises a second rigid tube (304) and a third steel strand (305);
• a bottom part of the second rigid tube (304) is provided with a sealing bottom plate (308);
• and
• wherein the third steel strand (305) extends into the second rigid tube (304), and is connected to the second rigid tube (304) by means of a fifth mass block (311);
• and a fourth mass block (306) is coaxially fixedly connected to an outside of the second rigid tube (304).

A multi-directional broadband tuned mass damper comprising:

• a rigid vibration damping frame (1), and two ends of the rigid vibration damping frame (1) in a length direction are configured to connect to a sling,
• wherein the rigid vibration damping frame (1) is provided with at least one first damping structure (2) and at least one second damping structure (3) distributed along the length direction at intervals, and an extension direction of the at least one first damping structure (2) is the same as that of an extension direction of the at least one second damping structure (3);
• wherein the at least one first damping structure (2) is provided with a control main frequency;
• the at least one second damping structure (3) is provided with two control main frequencies;
• and the control main frequencies of the at least one second damping structure (3) are higher than each control main frequency of the at least one first damping structure (2);
• wherein the at least one second damping structure (3) comprises a second rigid tube (304) and a third steel strand (305);
• a bottom part of the second rigid tube (304) is provided with a sealing bottom plate (308);
• and
• wherein the third steel strand (305) extends into the second rigid tube (304), and is connected to the second rigid tube (304) by means of a fifth mass block (311);
• and a fourth mass block (306) is coaxially fixedly connected to an outside of the second rigid tube (304);
• and a diameter of the sealing bottom plate (308) is equal to an outer diameter of the fourth mass block (306), and is connected to a bottom part of the fourth mass block (306) by means of a third rigid tube (307).