| 摘要 |
A lateral movement prevention structure of rahmen bridge is provided to stabilize an abutment installed on the soft ground and to cut off lateral movement and earth pressure of a soft layer caused by load of back-filling materials at the backside of an abutment by connecting many support beams between abutment foundations of a rahmen bridge, installing displacement adjustment jacks between an abutment foundation and a support beam, and installing stiffening beams perpendicularly or obliquely to the support beams. A lateral movement prevention structure of a rahmen bridge(B) for preventing the lateral movement of a soft layer and cutting off earth pressure on a soft layer comprises concrete pile foundations(10) installed on right and left sides at a certain distance from the center and inserted to a moderately weathered rock layer through a soft layer, an abutment foundation(20) formed by placing concrete on each concrete pile foundation to have the fixed thickness and width, an abutment(30) installed vertically on the abutment foundation and formed by placing concrete, a slab(40) formed by placing concrete on each abutment, many support beams(50) fixed horizontally between the foundations and provided with graduations to measure the lateral displacement of a soft layer caused by load of back-filling materials at the backside of the abutments, many stiffening beams installed perpendicularly or obliquely to the support beams, and displacement adjustment jacks(70) installed between the abutment foundation and the support beams and adjusted in width to adhere the support beams closely to each other to remove the lateral displacement. |
