The invention relates to a construction method of a double-limb thin-wall
pier of a bridge and mainly aims at solving the problem of slow construction speed in prior construction of the two-limb thin-wall
pier of the bridge. The method comprises the following steps of:
pier body reinforcement installation: wherein, the root part of the pier body main reinforcement extends into a cap part, straightthread rolling is carried out on a connecting end of the main reinforcement in a ground
processing site by using a heading
machine, a sleeve is connected with the threaded connecting end;
rollover formwork
assembly: wherein, the formworks is raised by using a
tower crane, and the horizontal joint and vertical joint of the internal and external formworks are made into flat joints. Rubber stop
grout is filled during installation; installation of internal and external operation platforms and a
protection system; pier body concrete is lifted and put into the formworks, manual vibration is carriedout by using a plug-in vibration bar, when the concrete is poured,
horizontal distribution in
layers is carried out; concrete curing; the formworks are removed and turned up and circulated to the topof the pier; after completion of a first cycle of construction, a next cycle, which includes
steel bar binding, formwork lifting and concrete pouring, is carried out. The method has the
advantage offast construction speed.