| 软土地铁车站中柱在强震作用下的响应研究 |
| |
| 引用本文： | 蒋英礼,;赵伯明,;胡晓勇.软土地铁车站中柱在强震作用下的响应研究[J].地震学刊,2009(4):405-410. |
| |
| 作者姓名： | 蒋英礼 ;赵伯明 ;胡晓勇 |
| |
| 作者单位： | [1]广东交通职业技术学院轨道交通工程学院,广州510650; [2]北京交通大学土木建筑工程学院,北京100044 |
| |
| 基金项目： | 基金项目：国家自然科学基金项目（40674016）、天津市科技创新专项资金项目（07FDZDSF02102）资助 |
| |
| 摘 要： | 将汶川地震时获得的地震波作为输入波，利用FLAC^3D软件对软土典型地铁车站中柱进行强震响应的三维数值模拟。土体采用D—P本构模型，车站结构采用弹性模型，并选用瑞利阻尼和Hardin／Drnevich模型的滞后阻尼来实现土在循环动荷载下的滞回和非线性。计算结果包括中柱的相对变形、轴力、剪力、弯矩及车站中柱的加速度响应规律。结果表明：下层中柱是地铁车站受地震波作用时最为薄弱的构件，并且中柱的破坏系水平向地震波和竖直向地震波共同作用的结果。
|
| 关 键 词： | 地震动 地下结构 强震响应 数值模拟 |
Study on Response of Centre Column of Metro Station in Soft Soils to Strong Earthquake |
| |
| Institution: | JIANG Ying-li, ZHAO Bo-ming, HU Xiao-yong (1. School of Rail Transit Engineering, Guangdong Communication Polytechnic, Guangzhou 510650, China; 2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China) |
| |
| Abstract: | With the seismic wave recorded in Wenchuan earthquake as the input, the centre column of a typical metro station was simulated numerically by the software FLAC^3D for its strong seismic responses. The D-P constitutive model was assumed for the soils, the elasticity for the station structure, and Rayleigh damping and Hardin/Drnevich model of hysteretic damping were used to simulate the nonlinearity and hysteresis of the soils under cyclic dynamic loading. The computational results include the relative deformation, axial force, shearing force, bending moment in the centre column, as well as its regularity of the acceleration response. They show that the centre column on the lower floor is the weakest component of the station structure in earthquake, and its damages are due to the combined effects of horizontal and vertical ground motions. |
| |
| Keywords: | earthquake ground motion underground structure strong seismic response numerical simulation |
| 本文献已被 维普 等数据库收录！ |
|
