Implementation of Settlement Monitoring for Foundation Pit Constructionat Qingliangsi Station of Changzhou Rail Transit

Abstract

Settlement monitoring is essential in foundation pit construction for ensuring excavation safety, structural stability, and protection of the surrounding environment. Taking the foundation pit construction of Qingliangsi Station of Changzhou Rail Transit as a case study, this paper presents the implementation and application of settlement monitoring in deep excavation engineering. Based on the project characteristics, hydrogeological conditions, and monitoring requirements, a monitoring scheme was established, covering retaining structure top settlement, column settlement, and surrounding ground settlement. Precision leveling and standardized observation procedures were adopted to ensure data reliability. The monitoring results show that most settlement data remained within the control range and the overall deformation of the foundation pit was stable. However, abnormal column settlement was detected at certain monitoring points. By combining monitoring feedback with on-site construction conditions, timely reinforcement measures were taken, which effectively controlled further deformation and ensured construction safety. The study indicates that scientific monitoring layout, standardized data acquisition, and timely information feedback are of great importance for deformation control and risk prevention in foundation pit construction.