1.河南工业大学土木工程学院,河南 郑州 450001
2.同济大学土木工程防灾国家重点实验室,上海 200092
杨金平(1988—),女,讲师,博士。主要从事结构抗震研究。E-mail: jping_yang@haut.edu.cn
收稿:2021-11-11,
修回:2021-12-10,
纸质出版:2023-06-28
移动端阅览
杨金平,孙开心,李培振等.考虑土⁃结构相互作用的软钢阻尼器作用效果分析[J].防灾减灾工程学报,2023,43(03):494-501.
YANG Jinping,SUN Kaixin,LI Peizhen,et al.Efficiency Analysis of Metal Dampers Considering Soil⁃structure Interaction[J].Journal of Disaster Prevention and Mitigation Engineering,2023,43(03):494-501.
为了研究土⁃结构相互作用(SSI)对设置金属阻尼器框架结构的影响规律,本文设计实现了考虑SSI的设置开孔式加劲阻尼器体系的框架结构振动台模型试验。试验采用层状剪切盒模拟土体的边界,锯末和砂土的混合物作为地基土,以12层钢筋混凝土框架结构模拟上部结构。基础采用3×3群桩基础。本文完成了1:6比例的高层结构—桩—土动力相互作用体系(PSSI)、设置金属阻尼器的PSSI体系以及刚性地基上框架结构和刚性地基上设置金属阻尼器的框架结构共4个模型振动台试验。从动力特性、地震响应等方面对比分析了纯框架与消能减震结构的差别。并通过计算减震率,分析了SSI效应对消能减震结构减震效果的影响规律。结果表明:消能减震结构在同样的地震作用加载下,频率衰减幅度降低为纯框架的1/3~1/2,阻尼比增加幅度为纯框架的1/2左右,结构的损伤程度明显减弱,阻尼器起到了显著的减震效果。SSI体系消能减震结构的阻尼器减震效率下降,但SSI的减震效果加强,综合来看,其减震率依然高于刚性地基结构。
In this study, a shaking table model test was performed on the stiffening damper system with opening holes considering the soil-structure interaction (SSI) to investigate the efficiency of metal dampers. The layered shear box was designed to simulate the soil boundary, with a mixture of sawdust and sand serving as the foundation soil. A12-storey reinforced concrete frame structure was constructed to simulate the superstructure. The foundation was a 3×3 pile group. Four shaking table model tests were carried out, including the 1:6 scale high-rise soil-pile-structure dynamic interaction system, the same system equipped with metal dampers, the frame structure under a fixed-base condition, and the frame structure equipped with metal dampers under a fixed-base condition. The differences between the pure frame and the energy dissipation and shock absorption structures are compared with each other and are analyzed in terms of their dynamic characteristics and seismic responses. By calculating the damping rate, the influence law of SSI effect on the damping effect of the energy dissipation and damping structure is analyzed. The results show that under identical earthquake loading, the frequency attenuation of the energy dissipation structure is reduced to 1/3~1/2 of that of the pure frame, and the damping ratio is increased to about 1/2 of that of the pure frame. The damage degree of the structure is greatly mitigated, and the dampers have a significant damping effect. Although the damping efficiency of metal dampers in SSI system decreases, the damping effect of soil-structure interaction is strengthened. Generally, the damping rate of the SSI system remains higher than that of the fixed-base condition.
胡聿贤 . 地震工程学 [M]. 2版 . 北京 : 地震出版社 , 2007 .
Hu Y X . Earthquake engineering [M]. 2nd ed . Beijing : Seismological Press , 2007 . (in Chinese)
凌贤长 , 王东升 . 液化场地桩⁃土⁃桥梁结构动力相互作用振动台试验研究进展 [J]. 地震工程与工程振动 , 2002 , 22 ( 4 ): 53 - 59 .
Ling X C , Wang D S . Study on shaking table test for seismic interaction of pile-soil-bridge structure in case of soil liquefaction caused by earthquake [J]. Journal of Earthquake Engineering and Engineering Vibration , 2002 , 22 ( 4 ): 53 - 59 . (in Chinese)
杨林德 , 杨超 , 季倩倩 , 等 . 地铁车站的振动台试验与地震响应的计算方法 [J]. 同济大学学报 , 2003 , 31 ( 10 ): 1135 - 1140 .
Yang L D , Yang C , Ji Q Q , et al . Shaking table test and numerical calculation on subway station structures in soft soil [J]. Journal of Tongji University , 2003 , 31 ( 10 ): 1135 - 1140 . (in Chinese)
钱德玲 , 夏京 , 卢文胜 , 等 . 支盘桩⁃土⁃高层建筑结构振动台试验的研究 [J]. 岩石力学与工程学报 , 2009 , 28 ( 10 ): 2024 - 2030 .
Qian D L , Xia J , Lu W S , et al . Study of shaking table test of squeezed branch pile-soil-high-rise structure interaction system [J]. Chinese Journal of Rock Mechanics and Engineering , 2009 , 28 ( 10 ): 2024 - 2030 . (in Chinese)
楼梦麟 , 吴京宁 . 土—结构相互作用对高柔结构风振响应TMD控制的影响 [J]. 计算力学学报 , 2001 , 18 ( 2 ): 189 - 193 .
Lou M L , Wu J N . Influence of soil-structure interaction on TMD control of wind-induced vibration response of highly flexible structures [J]. Chinese Journal of Computational Mechanics , 2001 , 18 ( 2 ): 189 - 193 . (in Chinese)
吴京宁 , 楼梦麟 . 土—结构相互作用对高层建筑TMD 控制的影响 [J] . 同济大学学报 , 1997 , 25 ( 5 ): 515 - 520 .
Wu J N , Lou M L . Influence of soil-structure interaction on Tuned Mass Damper control of high-rising buildings [J]. Journal of Tongji University , 1997 , 25 ( 5 ): 515 - 520 . (in Chinese)
陈国兴 , 王志华 , 宰金珉 . 考虑土与结构相互作用效应的结构减震控制大型振动台模型试验研究 [J]. 地震工程与工程振动 , 2001 , 21 ( 4 ): 117 - 127 .
Chen G X , Wang Z H , Zai J M . Shaking table model testing of structure suppressing vibration control including soil-structure interaction effects [J]. Journal of Earthquake Engineering and Engineering Vibration , 2001 , 21 ( 4 ): 117 - 127 . (in Chinese)
杨宏 , 邹立华 , 黄丽彬 , 等 . 土—结构相互作用对结构主动控制的影响研究 [J]. 振动与冲击 , 2009 , 28 ( 3 ) : 98 - 101, 124 .
Yang H , Zou L H , Huang L B , et al . Structure active control considering soil-structure dynamic interaction [J]. Journal of Vibration and Shock , 2009 , 28 ( 3 ): 98 - 101, 124 . (in Chinese)
邹立华 , 方雷庆 . 考虑桩—土—结构相互作用的结构振动控制研究 [J]. 振动与冲击 , 2005 , 29 ( 11 ): 100 - 104 .
Zou L H , Fang L Q . Structural vibration control considering pile-soil-structure dynamic interaction [J]. Journal of Vibration and Shock , 2005 , 29 ( 11 ): 100 - 104 . (in Chinese)
王海 , 鞠三 , 刘伟庆 , 等 . 土—结构相互作用对消能减震结构动力特性的影响 [J]. 南京工业大学学报(自然科学版) , 2012 , 34 ( 5 ): 1 - 6 .
Wang H , Ju S , Liu W Q , et al . Effects of soil-structure interaction on dynamic characteristics of energy dissipating structures [J]. Journal of Nanjing University of Technology (Natural Science Edition) , 2012 , 34 ( 5 ): 1 - 6 . (in Chinese)
李钢 , 李宏男 . 新型软钢阻尼器的减震性能研究 [J]. 振动与冲击 , 2006 , 25 ( 3 ): 66 - 72, 206 .
Li G , Li H N . Study on vibration reduction of structure with a new type of mild metallic dampers [J]. Journal of Vibration and Shock , 2006 , 25 ( 3 ): 66 - 72, 206 . (in Chinese)
Yang J P , Lu Z , Li P Z . Large-scale shaking table test on pile-soil-structure interaction on soft soils [J]. Structural Design of Tall and Special Buildings , 2019 , 28 ( 18 ): 1679 .
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
苏公网安备32010202012147号
