The invention discloses a construction process of a semi-underground
subway station. The semi-underground
subway station at least comprises a first underground floor, a driving plate layer, a
station hall layer,
pile foundations and a drainage chamber. The semi-underground
subway station construction technology comprises the steps that S1, construction preparation is conducted; s2, post-grouting cast-in-situ bored
pile construction is carried out; s3, measuring and setting out; s4, mounting an
earth surface drainage
system; s5, inserting and driving steel sheet piles; s6, excavation of a foundation pit; s7, foundation pit base treatment; s8, constructing a framework of the negative first floor; s9, backfilling the foundation pit; s10, a support is erected; s11, main bridge
box girder construction; s12, the support part is dismantled; s13, a traffic lane plate layer is constructed; s14, the continuous part of the support is disassembled; s15, construction of a
station hall layer; s16, the support is completely dismantled; s17, secondary excavation of the foundation pit; s18, constructing a top plate of the negative first floor; s19, secondary backfilling of the foundation pit; s20, the steel sheet piles are pulled out; and S21, construction is completed, and the construction site is cleaned. According to the construction technology of the semi-underground subway
station, traffic is not affected, and safety of ground and underground structures is not endangered.