LIFTING JACK FOR EXCHANGE OF BRIDGE BEARING, AND METHOD OF REPLACEMENT USING THE SAME

摘要

PURPOSE: A lifting jack for exchange of bridge bearing, and a method of replacement using the same are provided to make a safe changing construction by preventing a lifting plate from slipping. CONSTITUTION: A lifting jack for exchange of bridge bearing comprises an upper plate(101), a lower plate(102), and a shift fixing an unidirectional fixture(110) or a bidirectional fixture(120). The upper plate is close to the bottom of an upper structure(10). The lower plate is supported with a hydraulic device(30) and is connected to the lower part of the upper plate. The unidirectional fixture and the bidirectional fixture are formed between the upper plate and the lower plate.