深受弯构件抗剪影响参数显著性分析

发布时间：2018-07-07 17:56

本文选题：深受弯构件 + 受剪承载力　；参考：《工程力学》2017年07期

【摘要】：为合理量化不同规范中深受弯构件抗剪影响参数的显著性,结合691组受剪试验数据,通过相关分析系统地研究了单因素、组合因素对其抗剪能力影响的显著性,采用Kendall相关系数、Spearman相关系数和偏相关系数进行量化评估,并利用主成分分析法给出四项综合指标,分析各指标对实际受剪承载力的影响比重。研究表明:单因素条件下,混凝土强度等级fc'对受剪承载力影响较为显著,截面尺寸b和h0,剪跨比a/h_0次之;组合因素下,fc'、bh_0、ab、a/h_0对受剪承载力影响较显著。同时,由主成因素分析得到的四项综合指标对深受弯构件受剪能力贡献比重依次为31%、16%、13%、9%,为深受弯构件的抗剪设计提供理论参考。
[Abstract]:In order to quantify the significance of the shear resistance parameters of the flexural members in different specifications, combined with 691 groups of shear test data, the significance of single factor and combination factor on its shear ability is studied systematically by correlation analysis. The Kendall correlation coefficient, Spearman phase relation and partial correlation coefficient are used to quantify and use the main factors. Four comprehensive indexes are given by the component analysis method to analyze the proportion of each index to the actual shear capacity. The study shows that under single factor, the concrete strength grade FC'has a more significant influence on the shear capacity, the section size B and H0, the shear span ratio a/h_0, and the combination factor, FC', bh_0, AB, a/h_0 have a significant influence on the shear bearing capacity. The contribution of four comprehensive indexes to the shear capacity of flexural members is 31%, 16%, 13% and 9%, which provides a theoretical reference for the shear design of flexural members.
【作者单位】：长安大学建筑工程学院;
【基金】：国家自然科学基金项目(51578072,51578077) 陕西省科技统筹创新工程计划项目(2015KTZDSF03-04) 陕西省自然科学基金项目(2016JM5070) 中央高校基本业务费项目(310828163410,310828161006)
【分类号】：TU312

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