2014年10月上 施工技术 第43卷第19期 CONSTRUCTION TECHNOLOGY 85 D0I:10.7672/5js2014190085 坡地地貌岩体基坑抗浮水头试验模拟与分析 杨淑娟1，于德湖1，张同波2，余良刚1 (1.青岛理工大学土木工程学院，山东青岛266033；2.青建集团股份公司，山东青岛266000) [摘要]通过自制试验模型，对坡地地貌岩体基坑在不同降雨强度和坡度下的抗浮水头进行研究，并与有限元程序 计算结果对比分析，验证了前期所推导的抗浮水头计算公式的合理性.通过研究进一步表明极端降雨条件下，基 坑下游最低点向坑外溢水时，基坑上游水位并不与最低点持平而是持续增长，若取下游最低点作为抗浮水位值，工 程将不能满足抗浮要求，存在安全隐患. [关键词]基坑；坡地；岩体；抗浮水头；坡度；试验 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)19-0085-05 Experimental Simulation and Numerical Analysis of the Anti-floating Head of Slope Landform Rock Foundation Excavation Yang Shujuan' Yu Dehu' Zhang Tongbo2 Yu Lianggang' (1.School of Civil Engineering Qingdao Technological University Qingdao Shandong 266033 China; 2.Qingjian Group Co.Ld.Qingdao Shandong 266000 China) Abstract:Through self-made test model this paper studies the anti-floating head of slope landform rock foundation excavation in different rainfall intensity and slope.With the finite element calculation results for parative analysis this paper verifies the reasonableness of the calculation formula of anti-floating head derived preliminary.By further study it shows that under conditions of extreme rainfall when the lowest point of foundation excavation downstream spills outside the foundation excavation upstream water level and the lowest point is not flat but sustained growth.If downstream lowest point is presumed as anti-floating level value the project will not meet the requirements of anti-floating as well as potential safety hazard. Key words:found...
坡地地貌岩体基坑抗浮水头试验模拟与分析.pdf
