加劲水泥土搅拌桩承载力性状的有限元分析
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摘要
文章基于加劲水泥土搅拌桩现场试桩静载试验,采用大型有限元分析软件ANSYS对加劲水泥土搅拌桩模型和灌注桩模型进行了分析和研究。数值计算结果表明,通过合理的参数设定和接触模拟,试验和模拟的Q-s曲线吻合较好;加劲水泥土搅拌桩的承载力大于相同尺寸的灌注桩。分析结果为进一步揭示加劲水泥土搅拌桩的荷载传递机理提供了新的技术手段和依据。
On the basis of on-site static loading tests of cement-soil mixing piles,this paper analyzes the cement-soil mixing pile model and the grouting pile model by using the finite element analytical software ANSYS.The analysis result shows that Q-scurves of the test and those of the simulation are pretty consistent by setting reasonable parameters and contact simulation.Besides,the loading capability of the cement-soil mixing pile is bigger than that of the grouting pile in the same size.The analytical conclusions offer a new technological means and proof to further support the loading transmission mechanism of cement-soil mixing piles.
On the basis of on-site static loading tests of cement-soil mixing piles,this paper analyzes the cement-soil mixing pile model and the grouting pile model by using the finite element analytical software ANSYS.The analysis result shows that Q-scurves of the test and those of the simulation are pretty consistent by setting reasonable parameters and contact simulation.Besides,the loading capability of the cement-soil mixing pile is bigger than that of the grouting pile in the same size.The analytical conclusions offer a new technological means and proof to further support the loading transmission mechanism of cement-soil mixing piles.
引文
[1]马克生,梁仁旺.水泥搅拌桩复合地基承载力的试验确定[J].岩石力学与工程学报,2004,23(15):2652-2654.
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[6]钱德玲,张文彦,曹光暄,等.基于GTS对单桩静载试验的有限元模拟分析[J].合肥工业大学学报:自然科学版,2009,32(2):234-237.
[7]段继伟,龚晓南.水泥搅拌桩的荷载传递规律[J].岩土工程学报,1994,16(4):1-8.
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[9]凌光容,安海玉,谢岱宗,等.劲性搅拌桩的试验研究[J].建筑结构学报,2001,22(2):92-96.
[10]桂业琨,宣嘉伦.混凝土劲性水泥土复合桩[C]//21世纪高层建筑基础工程学术讨论会论文集.北京:中国建筑工业出版社,2000,22:424-429.
[2]史佩栋.深基础工程特殊技术问题[M].北京:人民交通出版社,2004:604-617.
[3]陈波,吕西林.用ANSYS模拟结构:地基相互作用振动台试验的建模方法[J].地震工程与工程振动,2002,2(1):126-131.
[4]邓凡平.ANSYS10.0有限元分析[M].北京:人民邮电出版社,2006:30-32.
[5]刘光磊,宋二祥.刚性桩复合地基水平受力性能有限元分析[J].工业建筑,2004,(11):41-44.
[6]钱德玲,张文彦,曹光暄,等.基于GTS对单桩静载试验的有限元模拟分析[J].合肥工业大学学报:自然科学版,2009,32(2):234-237.
[7]段继伟,龚晓南.水泥搅拌桩的荷载传递规律[J].岩土工程学报,1994,16(4):1-8.
[8]郑刚,姜忻良.水泥搅拌桩的荷载传递机理[J].土木工程学报,2002,35(5):82-86.
[9]凌光容,安海玉,谢岱宗,等.劲性搅拌桩的试验研究[J].建筑结构学报,2001,22(2):92-96.
[10]桂业琨,宣嘉伦.混凝土劲性水泥土复合桩[C]//21世纪高层建筑基础工程学术讨论会论文集.北京:中国建筑工业出版社,2000,22:424-429.
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