Seismic load transmitting system based on impact mechanism for multi-span continuous bridges

U.S. Cl. 14-73.5

7 Claims

US 6,499,170 B2 Seismic load transmitting system based on impact mechanism for multi-span continuous bridges Jae Kwan Kim, Daerim Apartment 6-109, Jamwon-dong, Seocho-ku, Seoul, 137-947 (Korea, Republic of); and Ick Hyun Kim, Seoul (Korea, Republic of) Assigned to Jae Kwan Kim, Seoul (Korea, Republic of) Filed on Apr. 09, 2001, as Appl. No. 9/828,726. Claims priority of application No. 00-19139 (KR), filed on Apr. 12, 2000. Prior Publication US 2001/0029711 A1, Oct. 18, 2001 Int. Cl.7E01D 19/04 U.S. Cl. 148212;73.5 7 Claims 1. A seismic load transmitting system based on impact mechanism for a multi-span continuous bridge, the system comprising: impact assemblies connected to a superstructure of the bridge for colliding with movable support piers according to a longitudinal displacement of the superstructure of the bridge caused by seismic load and for transmitting the seismic load from the superstructure of the bridge to the movable support piers; and impact receiving assemblies installed at the movable support piers for receiving impact forces generated when the impact assemblies collide with the movable support piers and for transmitting the seismic load transferred from the superstructure of the bridge through the impact assemblies to the movable support piers; and wherein said impact assembly includes a main body, said main body being fixed to said superstructure of the bridge at one end thereof and extending toward said impact receiving assembly at the other end thereof; an impact plate, the impact plate being installed at an end of the main body and facing said impact receiving assembly with a predetermined gap therebetween; a buffer plate made of an elastic material, the buffer plate being provided at the front of the end of the impact plate, for reducing impact load generated when said impact assembly collides with said impact receiving assembly; and wherein said impact receiving assembly includes a base plate attached to the movable support piers for fixing said impact receiving assembly to the movable support piers; a contact plate being in contact with the buffer plate when the collision between said impact assembly and said impact receiving assembly; an impact absorbing plate being installed between the contact plate and the base plate to absorb the impact force generated in case of the collision between said impact assembly and said impact receiving assembly.