Effect of construction of Shuangqiaomen gallop bridge onexisting east city's trunk road bridge

To ensure the security of east city's trunk road bridge and the construction of new bridge, the brace framing was scaffolded to transmit load under existing east city' s trunk road bridge.And the beam's vertical displacement of east city's trunk road bridge and the brace framing foundation's settlement under it were monitored. The result demonstrates that east city's trunk road bridge effectively transmits load without suffering bigger moment and meets the requirement of security.