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深基坑深层水平位移全过程时序变化分析

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为掌握基坑水平位移的变化规律,文中以基坑深层水平位移监测成果为基础,开展其现状变形规律及预测分析.结果表明,基坑不同位置处的最大水平位移值具有明显差异,变化范围为12.85~29.52 mm,均值为21.31 mm,均小于设计的变形控制值35 mm,满足设计要求;随基坑开挖持续,其水平位移具持续增加特征,且水平位移随深度增加,具先增加后减小特征,最大值主要位于 12.5~13.5 m.同时,经变形预测,基坑水平位移具有收敛增加趋势,最大预测值也小于变形控制值,说明预测条件下,基坑的水平位移仍满足要求.
Analysis of Time Series Changes of Deep Horizontal Displacement in Deep Excavation
To grasp the variation law of horizontal displacement in foundation pits,this article is based on the monitoring results of deep hori-zontal displacement in foundation pits,and carries out the current deformation law and prediction analysis.The analysis results show that there are significant differences in the maximum horizontal displacement values at different positions of the foundation pit,with a range of 12.85-29.52 mm and an average of 21.31 mm,both of which are less than the designed deformation control value of 35 mm,meeting the design re-quirements;As the excavation of the foundation pit continues,its horizontal displacement exhibits a continuous increase feature,and the hori-zontal displacement first increases and then decreases with increasing depth,with the maximum value mainly located between12.5~13.5 m.Meanwhile,through deformation prediction,the horizontal displacement of the foundation pit shows a convergent increasing trend,and the max-imum predicted value is also smaller than the deformation control value,indicating that under the prediction conditions,the horizontal displace-ment of the foundation pit still meets the requirements.

Excavation pitHorizontal displacementMonitoringDeformation prediction

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陕西地矿第二综合物探大队有限公司,陕西 西安 710016

基坑 水平位移 监测 变形预测

2024

江西建材
江西省建材科研设计院

江西建材

影响因子:2.247
ISSN:1006-2890
年,卷(期):2024.(1)
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