地下钢筋砼筒仓施工与闭水试验过程的抗浮试验研究
|
摘要
防水防潮是大型地下粮仓的技术难点之一,而闭水试验是地下仓交付业主使用前的必需步骤。通过现场试验研究与理论分析相结合的方法,验证了基于阿基米德原理所采用的抗浮措施过于保守,同时为了防止施工过程中特别是闭水试验期间地下仓上浮,给出了仓体所受实际浮力与理论浮力的线性表达式,并确定了地下仓闭水试验过程中的警戒水位。此研究可为类似工程的抗浮验算与闭水试验提供参考。
Water and moisture resistance is one of the difficulties in the research of large underground silos,and closed water test is a necessary step before underground silos is put into service. In this paper,the anti-floating measures based on Archimedes principle were proved to be too conservative by the method of combination of field test research and theoretical analysis. In order to prevent floating of the underground silo during construction especially during the closed water test,the paper put forward a linear expression of the actual and theoretical buoyancy of the silo,and determined the warning water level of the underground silo in the closed water test.The result can provide reference for anti-floating computation and close water test of the similar projects.
Water and moisture resistance is one of the difficulties in the research of large underground silos,and closed water test is a necessary step before underground silos is put into service. In this paper,the anti-floating measures based on Archimedes principle were proved to be too conservative by the method of combination of field test research and theoretical analysis. In order to prevent floating of the underground silo during construction especially during the closed water test,the paper put forward a linear expression of the actual and theoretical buoyancy of the silo,and determined the warning water level of the underground silo in the closed water test.The result can provide reference for anti-floating computation and close water test of the similar projects.
引文
[1]郑培,王振清,余汉华.我国地下仓的简史及特点[J].粮油加工,2009(1):90-94.
[2]余汉华,王录民,王振清,等.我国地下粮仓应用的现状及前瞻[J].河南工业大学学报(自然科学版),2008(6):79-81.
[3]JACKSON D C.It is a crime to design a dam without considering upward pressure:engineers and uplift,1890-1930[C]//Symposium to Honor Henry Philibert Caspard Darcy,2003:220-232.
[4]王贵生.一项大型水池工程上浮事故的处理[J].特种结构,1998(2):13-14.
[5]李平先,梁国仓,黄秋风.水池漂浮事故处理及抗浮构造措施[J].中国给水排水,2004,20(2):104-106.
[6]张旷成,丘建金.关于抗浮设防水位及浮力计算问题的分析讨论[J].岩土工程技术,2007(1):15-20.
[7]黄志仑.关于地下建筑物的地下水扬力问题分析[J].岩土工程技术,2002(5):273-274,283.
[8]张欣海.深圳地区地下建筑抗浮设计水位取值与浮力折减分析[J].勘察科学技术,2004(2):12-15,20.
[9]李冲.单一土质中地下钢筋砼粮食圆形筒仓抗浮模拟试验研究[D].郑州:河南工业大学,2016.
[10]崔岩,崔京浩,吴世红.地下结构浮力模型试验研究[J].特种结构,1999(1):34-37,41.
[11]张第轩,陈龙珠.地下结构抗浮计算方法试验研究[J].四川建筑科学研究,2008(3):105-110.
[2]余汉华,王录民,王振清,等.我国地下粮仓应用的现状及前瞻[J].河南工业大学学报(自然科学版),2008(6):79-81.
[3]JACKSON D C.It is a crime to design a dam without considering upward pressure:engineers and uplift,1890-1930[C]//Symposium to Honor Henry Philibert Caspard Darcy,2003:220-232.
[4]王贵生.一项大型水池工程上浮事故的处理[J].特种结构,1998(2):13-14.
[5]李平先,梁国仓,黄秋风.水池漂浮事故处理及抗浮构造措施[J].中国给水排水,2004,20(2):104-106.
[6]张旷成,丘建金.关于抗浮设防水位及浮力计算问题的分析讨论[J].岩土工程技术,2007(1):15-20.
[7]黄志仑.关于地下建筑物的地下水扬力问题分析[J].岩土工程技术,2002(5):273-274,283.
[8]张欣海.深圳地区地下建筑抗浮设计水位取值与浮力折减分析[J].勘察科学技术,2004(2):12-15,20.
[9]李冲.单一土质中地下钢筋砼粮食圆形筒仓抗浮模拟试验研究[D].郑州:河南工业大学,2016.
[10]崔岩,崔京浩,吴世红.地下结构浮力模型试验研究[J].特种结构,1999(1):34-37,41.
[11]张第轩,陈龙珠.地下结构抗浮计算方法试验研究[J].四川建筑科学研究,2008(3):105-110.