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INVESTIGATION AND STATISTICAL ANALYSIS ON BASIC RESISTANCE PARAMETERS OF CONCRETE STRUCTURE
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摘要: 以西安市、咸阳市及其周边县市的混凝土结构为对象，对1 000余栋混凝土结构进行了现场调查，统计分析了混凝土强度、钢筋性能及构件几何参数，并重点分析了制备工艺、搅拌方法和施工水平等因素对材料性能和构件几何参数的影响。研究结果表明：自拌混凝土和商品混凝土的强度均值相近，但商品混凝土强度变异较小；除现浇板的混凝土强度值较高外，其余构件的混凝土强度接近；建筑公司的资质越高，混凝土的强度越高且变异越小。钢筋性能良好，各生产厂家性能差异不大。构件显性几何参数控制较好，但隐性几何参数控制较差且变异很大。Abstract: Taking the typical concrete buildings in Xi'an and Xianyang and their periphery county cities as research objects, more than 1 000 structures were investigated.The concrete strength, reinforcing bar properties and component dimension parameters were statistically analyzed.The influence of some factors such as preparation process, stirring method and construction level on material properties and dimension parameters were analyzed.The results show that the strength mean of commercial concrete is close to strength mean of self-mixing concrete, but the strength variation of commercial concrete is smaller.In addition to the concrete strength of floor is higher, the concrete strengths of other elements are basically the same.The higher the building company's qualification, the higher is the concrete strength and the smaller is the strength variation.Reinforcing bar properties are good and their performance difference of different manufacturers is not big.The control level of dominant geometric parameter is better, but the control level of hidden geometric parameter is poor and its variation is large.
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Key words:
- materials properties /
- geometric parameter /
- statistics /
- investigate
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李继华,林忠民,李明顺,等．建筑结构概率极限状态设计[M].北京:中国建筑工业出版社,1990. [2] GB 500682001建筑结构可靠度设计统一标准[S]. [3] GB 501532008工程结构可靠性设计统一标准[S]. [4] 牛建刚,牛荻涛．住宅结构楼面荷载的调查与统计分析[J].西安建筑科技大学学报,2006,38(2):214－220. [5] 吴小强,姚继涛,刘雅君．住宅楼面活荷载的统计分析及楼板可靠度的分析[J].工程力学,2012,29(3):90－94. [6] 胡晓鹏．结构构件抗力的调查统计与住宅结构可靠性分析[D].西安:西安建筑科技大学,2005. [7] CECS 032007钻芯法检测混凝土强度技术规程[S]. [8] GB 500102010混凝土结构设计规范[S]. [9] 姚华．影响普通混凝土性能的若干因素的研究[D].长春:吉林大学,2007. [10] Hisham Q.Concrete Strength by Combined Destructive Methods?Simply and Reliably Predicted [J].Cement and Concrete?Research,2000,30(5):739－746. [11] 李清富,孙振华,张海洋．粉煤灰和硅粉对混凝土强度影响的试验研究[J].混凝土,2011(5):77－79. [12] 胡其高．建筑的可持续发展与对策[J].工业建筑,2002,32(1):51－54. [13] 胡晓鹏,牛荻涛,薛国辉．住宅结构抗力的调查与统计分析[J].哈尔滨工业大学学报,2008(6):978－981. [14] 李小朝．咸阳地区钢筋混凝土结构性能的调查与统计分析[D].西安:西安建筑科技大学,2008. [15] 赵国藩,金伟良,贡金鑫．结构可靠度理论[M].北京:中国建筑工业出版社,2000. [16] GB 502042011混凝土结构工程施工验收规范[S]. -
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