Research on Deformation of Deep Foundation Pit Supporting Structure
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摘要: 以成都地区深基坑工程为实例,采用两种现今主要的基坑设计计算软件分别进行计算分析,根据本地区大量的检测监测结果,中密卵石、密实卵石以及中等风化泥岩等岩土层,基底变形不宜取默认值10 mm,可取3~4 mm,用于计算上部卵石层采用m值,泥岩层用采k法计算,这样的计算结果才与实际变形值相吻合,此研究对指导工程施工有重要的意义。Abstract: Based on the deep foundation pit engineering in Chengdu as an example,using two kinds of present main foundation pit design calculation software combine with massive local test and monitor data which obtains a conclusion that the basement deformation of gravel layer and intermediary weathered mudstone cannot take default value of 10 mm but between 3~4 mm. The method that calculate deformation, upper gravel layer should use m-value and k-value should be used for mudstone that can make the calculation result and actual deformation match. This research has an important guiding significance to engineering construction.
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Key words:
- deep foundation pit /
- supporting structure /
- deformation /
- numerical simulation
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