摘要
针对工程实例中经常出现深基坑内支撑支护结构两侧存在不平衡土压力的情况,该文提出利用库伦土压力模型和弹性地基梁的文克尔模型对此进行综合计算分析,并利用相似三角形原理进行位移的叠加计算,得出计算结果与实际监测位移和有限元模拟结果相比较,验证了该方法的可靠性。根据受力特征,在支撑布置时,可在支护结构距基坑顶1/6范围内采用钢筋混凝土撑,其下采用钢结构撑,能在保证支护结构整体稳定性的情况下更经济和方便。
In response to the frequent occurrence of unbalanced earth pressure on both sides of the supporting structure in deep foundation pits in engineering examples,a comprehensive calculation and analysis is proposed using the Coulomb earth pressure model and the Winkle model of beams on elastic foundation in this paper.The similar triangle principle is used for displacement superposition calculation,and the calculation results are compared with actual monitored displacement and finite element simulation results to verify the reliability of this method.According to the stress characteristics,during the support arranging,steel reinforced concrete support can be used within 1/6 of the distance from the top of the foundation pit,and steel structure support can be used below,which can ensure the overall stability of the support structure and be more economical and convenient.
作者
张道勇
朱林英
蒋刘妮
王月
Zhang Daoyong;Zhu Linying;Jiang Liuni;Wang Yue(China Machinery International Engineering Design&Research Institute Co.,Ltd.;Geophysical and Geochemical Survey Institute of Hunan)
出处
《勘察科学技术》
2023年第5期37-41,共5页
Site Investigation Science and Technology
关键词
深基坑
不平衡土压力
稳定性
位移
deep foundation pit
unbalanced earth pressure
stability
displacement
