EXPERIMENTAL RESEARCH ON SELF-CENTERING CLB ROCKING WALL EQUIPPED WITH CFD
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摘要: 对单层单跨的附加常规摩擦阻尼器(CFD)的自复位交错层积竹(CLB)摇摆墙结构进行低周反复加载试验,得到了试验墙体的损伤模式、滞回曲线及骨架曲线,并对其刚度退化问题进行了探究。试验结果表明:附加CFD的摇摆墙主体未发生较大的破坏,试件的损伤模式主要为上部连接件和预应力筋锚固垫板处竹材的碎裂。试件不设置阻尼器时滞回曲线近似呈双线性,设置阻尼器后滞回曲线呈“旗帜型”,且随着弯矩贡献比的减小,滞回曲线愈加饱满。试件在经历了二次加载后仍具有较好的强度,但其在不经过修复受到二次加载时,刚度会发生下降。
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关键词:
- 摇摆墙 /
- 交错层积竹(CLB) /
- 摩擦耗能器 /
- 自复位
Abstract: Low-cycle repeated loading tests were carried out on the single-story single-span CLB rocking wall which is equipped with CFD, hysteretic curves and skeleton curves were drawn, and the problem of stiffness degradation was investigated. Based on the test results, the main body of rocking wall equipped with CFD was not damaged significantly, and the damage mode of the specimen was mainly the fracture of the bamboo material at the upper joint and the pre-stressed reinforcement anchor plate. The delayed hysteresis curve of the specimen without setting the damper was approximately bilinear, and the hysteresis curve after setting the damper was "flag shaped". Moreover, with the reduction of the moment contribution ratio, the hysteresis curve became more and more full, and the specimen still had a good strength after undergoing secondary loading. Moreover, when the specimen was subjected to secondary loading without repair, the stiffness will decreased.-
Key words:
- rocking wall /
- cross-laminated bamboo(CLB) /
- friction damper /
- self-centering
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[1] KURAMA Y C, PESSIKI S, SAUSE R, et al.Seismic Behavior and Design of Unbonded Post-Tensioned Precast Concrete Walls[J].PCI Journal, 1999, 44(3):72-89. [2] KURAMA Y C.Unbonded Post-Tensioned Precast Concrete Walls with Supplemental Viscous Damping[J].ACI Structural Journal, 2000, 97(4):648-658. [3] HOLDEN T, RESTREPO J, MANDER J B.Seismic Performance of Precast Reinforced and Prestressed Concrete Walls[J].Journal of Structural Engineering, 2003, 129(3):286-296. [4] RESTREPO J I, RAHMAN A.Seismic Performance of Self-Centering Structural Walls Incorporating Energy Dissipators[J].Journal of Structural Engineering, 2007, 133(11):1560-1570. [5] SARTI F, PALERMO A, PAMPANIN S.Development and Testing of an Alternative Dissipative Posttensioned Rocking Timber Wall with Boundary Columns[J/OL].Journal of Structural Engineering, 2016, 142(4).https://doi.org/10.1061/(asce)st.1943-541x.0001390. [6] FITZGERALD D, MILLER T H, SINHA A, et al.Cross-Laminated Timber Rocking Walls with Slip-Friction Connections[J/OL].Engineering Structures, 2020, 220.https://doi.org/10.1016/j.engstruct.2020.110973. [7] WANG Z, LI H, FEI B, et al.Axial Compressive Performance of Laminated Bamboo Column with Aramid Fiber Reinforced Polymer[J/OL].Composite Structures, 2021, 258.https://doi.org/10.1016/j.compstruct.2020.113398. [8] LI H, QIU Z, WU G, et al.Slenderness Ratio Effect on Eccentric Compression Properties of Parallel Bamboo Strand Lumber Columns[J/OL].Journal of Structural Engineering, 2019, 145(8).https://doi.org/10.1061/(asce)st.1943-541x.0002372. [9] LYU Q, WANG W, LIU Y.Study on Thermal Insulation Performance of Cross-Laminated Bamboo Wall[J].Journal of Renewable Materials, 2019, 7(11):1231-50. [10] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材顺纹抗拉强度试验方法:GB/T 1938-2009[S].北京:中国建筑工业出版社, 2009. [11] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材横纹抗拉强度试验方法:GB/T 14017-2009[S].北京:中国建筑工业出版社, 2009. [12] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材顺纹抗压强度试验方法:GB/T 1935-2009[S].北京:中国建筑工业出版社, 2009. [13] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材顺纹抗压弹性模量测定方法:GB/T 15777-2017[S].北京:中国建筑工业出版社, 2017. [14] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材横纹抗压强度试验方法:GB/T 1939-2009[S].北京:中国建筑工业出版社, 2009. [15] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材横纹抗压弹性模量测定方法:GB/T 1943-2009[S].北京:中国建筑工业出版社, 2009. [16] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材抗弯强度试验方法:GB/T 1936.1-2009[S].北京:中国建筑工业出版社, 2009. [17] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.木材抗弯弹性模量测定方法:GB/T 1936.2-2009[S].北京:中国建筑工业出版社, 2009. [18] 卫佩行, 王泉中, 周定国.分离刚度法测试杨木单板层积材木梁剪切模量的试验研究[J].土木建筑与环境工程, 2012, 34(增刊2):177-180. [19] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.金属材料弹性模量和泊松比试验方法:GB/T 22315-2008[S].北京:中国建筑工业出版社, 2008. [20] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1-2010[S].北京:中国标准出版社, 2010. [21] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会.预应力混凝土用螺纹钢筋:GB/T 20065-2016[S].北京:中国建筑工业出版社, 2016. [22] Standards Council.New Zealand Standard Concrete Structures Standard:NZS 3101:2006[S].Wellington:Standards New Zealand, 2006. [23] 中华人民共和国住房和城乡建设部.建筑抗震试验规程:JGJ/T 101-2015[S].北京:中国建筑工业出版社, 2015.
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