Shake-Table Test for a Typical Curved Bridge: Wave Passage and Local Site Effects
Shake-Table Test for a Typical Curved Bridge: Wave Passage and Local Site Effects
复制标题
典型曲线桥的振动台测试：波浪通过和局部场地效应
DOI：
10.1061/(asce)be.1943-5592.0000643
复制
发表时间：
2015-02
影响因子：
3.6
通讯作者：
Xie, Wei-Chau
中科院分区：
文献类型：
--
作者：
Zhang, De-Yi;Yan, Wei-Ming;Chen, Yan-Jiang;Xie, Wei-Chau
为研究地震动空间变异性对曲线桥梁的影响，本文对1/10比例的典型曲线桥梁进行了空间地震动振动台试验，包括行波效应、局部场地效应和多维地震动。试验结果表明，行波效应和局部场地效应对曲线桥的地震反应均有显著影响。曲线桥的行波效应主要是由非同步激励引起的高阶非对称振型和拟静力位移引起的，而基频与场地优势频率相近的结构的局部场地效应更为明显。与直桥相比，曲率半径的存在使得弯桥对地震动空间变化尤其是局部场地效应更为敏感。因此，在同一地震作用下，弯桥的破坏可能比直桥更严重。此外，不规则曲线桥梁的地震反应是更敏感的地面运动的多维性比直桥。在这个实验中，桥台和不均匀的网站沿沿着的影响没有考虑。
To study the effects of ground motion spatial variations on curved bridges, this paper presents a shake-table test for a 1/10-scale typical curved bridge under spatial ground motions, including wave passage effect, local site effect, and ground motion multidimensionality. The experimental results show that both wave passage and local site effects have significant influence on seismic responses of curved bridges. Wave passage effect on curved bridges is attributed primarily to the higher asymmetric modes and pseudostatic displacements induced by asynchronous excitations, whereas local site effect is more obvious for structures with fundamental frequencies close to the predominant frequencies of the sites. Compared with straight bridges, the curvature radius causes curved bridges to be more sensitive to ground motion spatial variations, especially the local site effect. Therefore, curved bridges may be damaged more seriously than straight bridges during the same earthquake. Furthermore, seismic responses of irregular curved bridges are more sensitive to ground motion multidimensionality than are those of straight bridges. In this experiment, the effects of bridge abutments and nonuniform sites along the bridge were not considered.
登录
查看更多内容
影响因子：
2.6
作者：
I. Anastasopoulos;M. Loli;Takis Georgarakos;V. Drosos
通讯作者：
I. Anastasopoulos;M. Loli;Takis Georgarakos;V. Drosos
影响因子：
5.5
作者：
Ş. Ateş;A. A. Dumanoglu-A.;A. Bayraktar
通讯作者：
Ş. Ateş;A. A. Dumanoglu-A.;A. Bayraktar
DOI：
10.1061/(asce)0733-9445(1996)122:5(476
发表时间：
1996-05-01
期刊：
JOURNAL OF STRUCTURAL ENGINEERING-ASCE
影响因子：
--
作者：
Harichandran, RS;Hawwari, A;Sweidan, BN
通讯作者：
Sweidan, BN
DOI：
10.1002/(sici)1096-9845(199601)25:1
发表时间：
1996
影响因子：
4.5
作者：
P. Fajfar;P. Gašperšič
通讯作者：
P. Fajfar;P. Gašperšič
影响因子：
2.6
作者：
Kawashima, Kazuhiko;Zafra, Richelle;Nakayama, Manabu
通讯作者：
Nakayama, Manabu