| 地震作用下锚索框架梁边坡的振动台模型试验研究 |
| |
| 引用本文： | 林翔,陈永明,杨肖年.地震作用下锚索框架梁边坡的振动台模型试验研究[J].路基工程,2019,0(2):192-196. |
| |
| 作者姓名： | 林翔 陈永明 杨肖年 |
| |
| 作者单位： | 长江三峡集团福建能源投资有限公司,福州,350000;长江三峡集团福建能源投资有限公司,福州,350000;长江三峡集团福建能源投资有限公司,福州,350000 |
| |
| 摘 要： | 以海西福永高速公路某标段预应力锚框支护土岩二元结构边坡工程为依托，通过模型试验法在大型振动台作用下对锚索-框架梁支护下的土岩二元结构边坡的地震响应规律进行了研究。结果表明:沿坡高方向向上，PGA放大系数呈递增趋势，表现出明显的"趋表效应"和"鞭梢效应"；地震强度等级较高情况下，土体的塑性特征非常明显；地震波频谱特征不同导致加速度峰值放大系数存在差异并随坡高变大而呈现变小的趋势，最终在边坡坡顶处逐渐趋于一致。
|
| 关 键 词： | 边坡工程 锚框支护 地震动力响应 振动台 模型试验 |
| 收稿时间： | 2019-11-12 |
Study on Anchor-frame Beam Supported Slope under the Action of Earthquake by Shaking Table Model Test |
| |
| Abstract: | Based on the soil-rock dual structural slope supported by prestressed anchor-frame in a section of Fuzhou-Yongtai Highway in West-straits Economic Zone, the seismic response law of the slope was studied by large-scale shaking table model test. The result shows that, when going up along the slope elevation, PGA amplification factor shows an increasing trend with obvious ‘skin effect’ and ‘whipping effect’; in case of relatively high earthquake intensity scale, the soil mass exhibits distinct plastic characteristics; due to the different spectrum features of seismic wave, PGA amplification factor has discrepancies and trends to be smaller as the slope elevation increases, and then gradually converged towards the slope top. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《路基工程》浏览原始摘要信息 |
|
点击此处可从《路基工程》下载全文 |
|
