钢板混凝土剪力墙抗剪性能试验研究

发布时间：2018-07-16 17:20

【摘要】：完成了2个内嵌钢板混凝土墙试件和3个外包钢板混凝土墙试件在恒定轴压力和往复剪切作用下的拟静力试验,用以研究钢板混凝土剪力墙的抗剪性能。墙试件采用工字形截面,剪跨比为1.2,腹板墙截面含钢率约6%。试验结果表明:试件腹板墙发生剪切破坏;当设计轴压比由0.3提高至0.6时,试件的受剪承载力略有提高,极限位移角减小约20%;在轴压比相同和腹板墙含钢率相近的情况下,外包钢板混凝土墙的变形能力比内嵌钢板混凝土墙大约20%;采用竖向加劲肋-缀条拉结代替栓钉-对拉螺栓连接,外包钢板混凝土墙的受剪承载力差异不大,但变形能力显著增大。对国内外46个钢板混凝土墙试验数据的分析表明,按中国规程JGJ 3—2010《高层建筑混凝土结构技术规程》计算得到的受剪承载力平均为试验值的78%,计算公式偏于安全;而美国规范AISC 341-10和欧洲规范Eurocode 8的计算公式仅考虑钢板的抗剪贡献,计算值仅为试验值的51%,严重低估了钢板混凝土墙的受剪承载力。对大量剪力墙试验数据的分析表明,钢板混凝土墙的剪切变形能力显著优于钢筋混凝土墙和钢骨混凝土墙。
[Abstract]:The pseudostatic tests of two specimens with embedded steel plate concrete wall and three specimens with external steel plate concrete wall under constant axial pressure and reciprocating shear were completed to study the shear resistance of steel plate concrete shear wall. The section of the wall is I-shaped, the shear span ratio is 1.2, and the steel content of the web wall section is about 6. The test results show that shear failure occurs in the web wall of the specimen, when the design axial compression ratio is increased from 0.3 to 0.6, the shear bearing capacity of the specimen increases slightly, the ultimate displacement angle decreases by about 20 percent, and when the axial compression ratio is the same and the steel content of the web wall is similar, the shear capacity of the specimen is slightly increased, and the ultimate displacement angle is reduced by about 20 percent. The deformation capacity of the encased steel plate concrete wall is about 20% higher than that of the embedded steel plate concrete wall, and the shear capacity of the outer steel plate concrete wall is not different from that of the steel plate concrete wall by using the vertical stiffening rib-tie instead of the bolt to tie the bolt. But the deformability increased significantly. The analysis of test data of 46 steel plate concrete walls at home and abroad shows that the average shear capacity calculated according to JGJ3-2010 Technical Specification for High-rise Building concrete structures is 78 of the test value, and the calculation formula is more safety. The American code AISC 341-10 and the European code Eurocode 8 only consider the shear contribution of the steel plate, and the calculated value is only 51% of the experimental value, which seriously underestimates the shear capacity of the steel plate concrete wall. The analysis of a large number of shear wall test data shows that the shear deformation ability of steel plate concrete wall is significantly better than that of reinforced concrete wall and steel reinforced concrete wall.
【作者单位】：清华大学土木工程安全与耐久教育部重点试验室;
【基金】：“十二五”国家科技支撑计划(2012BAJ07B01) 国家自然科学基金项目(91315301)
【分类号】：TU398.9;TU352.11

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