薄壁钢管再生混凝土柱轴压敏感因素对比分析  

Contrastive Analysis on the Axial Compression Sensitive Factors of Thin-walled Steel Tube Recycled Concrete Columns

作　　者：闻洋[1] 张迎春[1] 梁东旭 王中政 WEN Yang;ZHANG Yingchun;LIANG Dongxu;WANG Zhongzheng(School of Architecture&Civil Engineering,Inner Mongolia University of Science Technology,Baotou,China,014010;Capital Construction Department,Tonghua Normal University,Tonghua,China,134000;Department of Culture and Communication,University of International Relations,Beijing,China,100091)

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010 [2]通化师范学院基建处,吉林通化134000 [3]国际关系学院文化与传播系,北京100091

出　　处：《沈阳建筑大学学报（自然科学版）》2018年第5期777-785,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51068021)

摘　　要：目的找出不同参数对薄壁钢管再生混凝土柱力学性能敏感程度的影响规律,在保证最优承载力和成本的同时,给出最佳参数组合.方法以长细比、核心混凝土强度、取代率、含钢率为变化参数,采用实验对照、正交试验法、SPSS软件对薄壁钢管再生混凝土较长柱、中长柱、短柱的敏感因素及敏感程度进行分析.结果较长柱在长细比50~60、含钢率5%~11%、取代率20%~60%时,各因素对其承载力敏感程度从强到弱依次为长细比、含钢率、取代率;中长柱在长细比25~35、含钢率3. 8%~7. 9%、取代率20%~60%时,敏感程度从强到弱依次为含钢率、取代率、长细比;短柱在含钢率3. 8%~7. 7%、混凝土强度C35~C40、取代率20%~35%时,敏感程度从强到弱依次为含钢率、混凝土强度、取代率.结论 SPSS软件分析与正交试验所得结果基本一致,说明将回归分析运用到薄壁钢管再生混凝土柱敏感因素的对比中是可行的.The aim of this study is to find out the influence law of different parameters on the sensitivity to mechanical properties of thin-walled steel tube recycled concrete columns.While ensuring the optimal bearing capacity and cost,the optimal combination of parameters is obtained.Taking slenderness ratio,core concrete strength,substitution rate and steel content as variable parameters,the sensitivity factors and sensitivity of thin-walled steel tube recycled concrete mixed long,mixed medium long,and mixed short columns were analyzed by means of experimental control,orthogonal test and software SPSS.In the mixed long columns,when the slenderness ratio is 50~60,the steel content is 5%~11%and the substitution rate is 20%~60%,the sensitivity degree of each factor to its bearing capacity is slenderness ratio,steel content,substitution rate.In the mixed medium long column,when the slenderness ratio is 25~35,the ratio of steel to steel is 3.8%~7.9%,and the substitution rate is 20%~60%,the sensitivity degree is steel content,substitution rate,slenderness ratio.However,when the steel content of mixed short columns is 3.8%~7.7%,the core concrete strength is C35~C40,and the substitution rate is 20%~35%,the sensitivity degree in short columns is steel content,concrete strength,substitution rate.The results obtained by SPSS software are basically consistent with those obtained by orthogonal test,which shows that it is feasible to apply regression analysis to the comparison of sensitive factors of thin-walled steel tube recycled concrete columns.

关 键 词：薄壁钢管再生混凝土柱 正交试验 敏感因素 回归分析 

分 类 号：TU398[建筑科学—结构工程]