平行换乘车站基坑外土压力特征及墙体变形

The Features of Soil Pressure outside the Foundation Pit and Wall Deformation at the Parallel Transfer Station

介绍轨道交通平行换乘车站后建车站施工中的基坑外土压力特征及墙体变形性状。在采取"化整为零"的施工技术措施后,根据车站施工得到的实测监测数据,尽管具有非对称特点,靠先建车站侧变形明显偏小;在基坑开挖和回筑阶段,墙后土压力的非对称性更为明显;但在顶板完工后,土压力趋于稳定,非对称性逐渐消失。

Introduced hereby are the features of soil pressure outside the foundation pit and the wall deformation during construction of the station after the parallel transfer station for the rail transit system. After the technical measure of 'breaking up the whole into parts' is adopted for construction, and based on the measured and monitored data from station construction, though asymmetrical, deformation close to the side of the station built earlier is apparently small. The asymmetrical soil pressure behind the wall is more apparent during excavation of the foundation pit and backfilling, but after the top slab is completed, the soil pressure gradually becomes stable and less asymmetrical until it disappears.