Abstract:
Where urban subway tunnel passes through existing bridge, deformation of bridge foundation shall be estimated in advance through numerical simulation and calculation, and then secondary stress of bridge shall be calculated, so as to judge the safe condition of bridge. Thereafter, measures for bridge reinforcement may be determined. When subway tunnel passes through bridge foundation, bridge shape is actively and dynamically adjusted by using a PLC bridge synchronous lifting system, to basically keep the original design state of the bridge and to guarantee the structural safety of existing bridge.
SHAO Xiang-yu. CONSTRUCTION TECHNIQUE FOR DYNAMIC ACTIVE PROTECTION OF SUBWAY TUNNEL PASSING THROUGH MUNICIPAL BRIDGE[J]. Architecture Technology, 2012, 43(10): 907-912.