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郑州地区基坑工程砂土力学指标确定方法探讨 被引量:1

Discussion on the determination method of mechanical index of sand in excavations project in Zhengzhou
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摘要 郑州东区普遍分布砂层,砂层力学指标的取值对郑州市基坑工程安全和造价有较大的影响。通过对郑州地区某基坑监测数据的分析,以监测到的支撑轴力为反演目标,结合开挖工况通过正交参数直接反分析计算,得到郑州地区黄河冲积平原区典型砂层的力学指标。反分析结果略高于原位测试判别结果,说明实践中可利用原位测试,结合砂土的状态确定砂土的力学指标。 The sand layer is widely distributed in the east of Zhengzhou City.The mechanical index of the sand layer has great influence on the safety and cost of the foundation pit engineering.Based on the analysis of the monitoring data of a foundation pit in Zhengzhou area,this paper takes the axial force as the inverse objective,and combines the excavation conditions through direct inverse analysis and orthogonal calculation,the mechanical indexes of typical sand layers in the yellow river alluvial plain in Zhengzhou area are obtained.The result of inverse analysis is slightly higher than that of in-situ test,which shows that in practice,in-situ test can be used to determine the mechanical index of sand.
作者 何建锋 郭小帅 杜朋召 He Jianfeng;Guo Xiaoshuai;Du Pengzhao(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China;Key Laboratory of Water Management and Water Security for Yellow River Basin,Ministry of Water Resources(under construction),Zhengzhou 450003,China)
出处 《山西建筑》 2023年第2期109-112,共4页 Shanxi Architecture
关键词 基坑 力学指标 反分析 弹性支点法 foundation pit mechanical index inverse analysis elastic fulcrum method
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