Field Measurements and Theoretical Analysis on Internal Force of Composite Soil-nailing at Zhongshiyou Foundation Pit
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摘要: 桩锚与土钉复合支护在国内得到广泛地应用,但其分析理论和设计方法尚欠不足,实践远超过理论。结合北京中国石油大厦深基坑支护工程,介绍了桩锚-土钉复合支护内力的监测方案。通过对复合土钉支护中桩、锚杆、土钉受力的现场测试和分析,研究了桩锚-土钉复合支护各部分的受力机理,对深入认识桩锚-土钉复合支护的受力机理和桩锚-土钉复合支护结构的优化设计提供参考。Abstract: The internal force t scheme of pile-anchor composite soil nailing is described and applied to the deep foundation pit of Zhongshiyou building. A field investigation and data collection is carried out to monitor the performance of this type of composite soil nailing. The force behaviors of composite soil nailing during construction and in service are further investigated based on field measttrements.
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