基于现场监测和数值模拟的吹填土不均匀沉降经验公式修正

Modification of Empirical Formula for Non-uniform Settlement of Dredger Fill Based on Field Monitoring and Numerical Simulation

为研究填海地区吹填土不均匀沉降的变化规律,以天津大港区填海地区地质勘查资料为依据,通过室内试验和现场原位静力触探实验得到吹填土层相关参数,选取考虑比贯入阻力的经验公式计算填海地区软土不均匀沉降。结合自动化监测数据与理论数据和数值模拟结果的对比分析,确定不同数据的偏差值。通过对大数据的分析,对经验公式提出修正,最终提出一套更为精确的吹填土或软土压缩模量估算方程。

In order to study the variation law of non-uniform settlement of dredger fill in reclamation area,according to geological survey data of Tianjin Dagang reclamation area,relevant parameters of dredger fill layer are obtained after indoor test and in-situ static penetration test,and empirical formula considering specific penetration resistance is selected to calculate non-uniform settlement of soft soil in reclamation area.combing with the contrastive analysis of automatic monitoring data with theoretical data and numerical simulation results,the deviation values of different data are determined.Based on the analysis of large data,the empirical formula is revised,and a set of more accurate estimating equation of compressive modulus of dredger fill or soft soil is put forward.