摘要
针对矸石型复合地基桩体强度进行综合性实验设计,通过室内强度试验和数值模拟研究影响煤矸石型水泥土桩复合地基应用效能的关键因素——桩体强度和沉降变形,获得了在考虑工程材料成本条件下,煤矸石型水泥土复合桩体强度的最佳水泥配比为16%~20%、最佳水灰比范围为0.5~1.0、最佳粉灰比范围为0.25~0.88等参数。通过数值模拟分析得出煤矸石型水泥土桩复合地基单桩和群桩体系的变形特性规律。
According to the coal gangue type composite foundation pile strength,a comprehensive experimental design is undertaken.Through strength tests and numerical simulation,the key factors affecting the property of the of coal gangue type composite foundation pile,such as pile strength and settlement,are studied and analyzed.In consideration of the conditions of economic cost of construction materials,some parameters of this composite foundation pile strength are obtained.The optimal cement ratio is from 16% to 20%,the optimal water-cement ratio is in the range of 0.5to 1.0,and the optimal powder-cement ratio is in the range of0.25 to 0.88.The deformation characteristics of single and group piles system of composite foundation are obtained by numerical simulation.
出处
《实验技术与管理》
CAS
北大核心
2016年第3期30-33,38,共5页
Experimental Technology and Management
基金
中国矿业大学教育教学改革与建设课题项目(2013G17)
江西省学位与研究生教育教学改革研究项目(JXYJG-2015-100)
关键词
复合地基
煤矸石
强度试验
数值模拟
composite foundation
coal gangue
strength test
numerical simulation
