Side self-bearing structure for connection of newly-built project and underground operation station and transformation method

Abstract

The invention discloses a side-by-side self-bearing structure of a newly-built project connection underground operation station, which comprises an operation underground station, the operation underground station is provided with a station enclosure structure and a station side wall which are connected with each other, a connection hole excavated later is formed in the station side wall, and a channel opening is also formed in the position, corresponding to the connection hole, of the station enclosure structure; newly-built operation station side wall hole-opening columns and newly-built operation station side wall hole-opening beams are arranged in the peripheral wall body of the connection hole, the station side wall is connected with the newly-built underground engineering side wall through the newly-built operation station side wall hole-opening columns and the newly-built operation station side wall hole-opening beams, and a newly-built underground engineering communicating with the operation underground station is formed; and a new underground engineering foundation pit support is arranged on the outer side of the new underground engineering. The holing columns and the holing beams which are constructed in a layered mode are used as temporary stress components in the connection holing construction period, other external temporary supports are not needed, the construction difficulty is reduced, the construction period is shortened, and the method can be popularized to side wall transformation in a larger range.

Images