钢纤维增强边缘构件混凝土高剪力墙抗侧承载力分析  

LATERAL BEARING CAPACITY OF HIGH SHEAR WALL WITH STEEL FIBER REINFORCED CONCRETE IN BOUNDARY ELEMENTS

作　　者：楚留声[1] 赵军[1] 王卫仑[2] 李明杰[1] 

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]深圳大学,广东省滨海土木工程耐久性重点实验室,广东深圳518060

出　　处：《工业建筑》2016年第2期47-51,共5页Industrial Construction

基　　金：国家自然科学基金项目(51408556;51478438);河南省高校科技创新团队项目(15IRTSTHN026);河南省高等学校重点科研项目(15A560037;14A560019)

摘　　要：基于“部分增强”的思想,针对剪力墙边缘构件受力复杂、施工困难的特点,提出在高剪力墙边缘构件中采用钢纤维局部增强的方法。结合试验结果,验证了有限元数值分析的适用性,研究了钢纤维体积率和轴压比对钢纤维增强边缘构件混凝土高剪力墙抗侧承载力的影响,并与整体钢纤维混凝土剪力墙相应的抗侧承载力进行对比分析。结果表明：边缘构件钢纤维体积率为1.5%-2%时,对剪力墙承载力增强效果最强,最大提高幅度达45.1%。相对于整体钢纤维混凝土剪力墙,仅边缘构件采用钢纤维增强的剪力墙在未降低过多承载力的情况下,具有较好的经济优势。Based on the idea of partial reinforcement, a method that using steel fiber reinforced concrete in boundary elements of high wall was proposed according to the construction difficulty and complex stress state of boundary elements. Combined with the test results, the applicability of the finite element numerical analysis was verified, and the influences on the lateral bearing capacity of this kind of shear wall from different steel fiber volume ratios and axial load ratio were studied, to which a comparative analysis of accordingly lateral bearing capacity of overall steel fiber reinforced concrete shear wall was then conducted. Results showed that the lateral bearing capacity was best when the steel fiber volume ratio in reinforced concrete of boundary elements was hetween 1.5% and 2% , with a maximum increase of 45.1%. Compared with the overall steel fiber reinforced concrete shear wall, the high shear wall with steel fiber reinforced concrete only in boundary elements does not reduce excess capacity, while has great economic advantage.

关 键 词：钢纤维混凝土 边缘构件 剪力墙 抗侧承载力 

分 类 号：TU398.2[建筑科学—结构工程]