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Demonstration and Analysis on the Determination for the Characteristic Values of the Bearing Capacity of Rock-embedded Piles
Author(s): 
Pages: 14-16,20
Year: Issue:  9
Journal: Geotechnical Investigation & Surveying

Keyword:  硬质岩石 桩(墩)基础 承载力特征值;
Abstract: 本文根据国家和地区规范、规程的相关规定,对深圳拟建第一高建筑(99层,高439m)桩(墩)基础微风化岩承载力特征值取值进行了计算。由计算结果可知,在同一孔径、桩长条件下,桩和墩其承载力特征值有1:0.56~1:0.70的关系,是混凝土强度设计值(桩身混凝土按C30)的1.2~2.0倍;另参考相关硬质岩石上桩的静载试验结果,提出该工程桩(墩)基础设计单桩承载力特征值建议按桩身混凝土强度控制的结论。
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