| 加筋碎石垫层中双层土工格栅拉力特性试验研究 |
| |
| 引用本文： | 胡启军,谢强,卿三惠.加筋碎石垫层中双层土工格栅拉力特性试验研究[J].岩土力学,2007,28(4):799-802. |
| |
| 作者姓名： | 胡启军 谢强 卿三惠 |
| |
| 作者单位： | 1. 西南交通大学土木工程学院,成都,610031
2. 铁道第二勘察设计院,成都,610031 |
| |
| 摘 要： | 通过现场试验，表明线路中心处加筋垫层中横向格栅拉力值最大，双层格栅中横向格栅拉力顶层较底层减少了29．5％：纵向格栅顶层比底层先发挥作用。铺轨加载增大了纵横两向格栅的拉力，但对路基变形没有影响。加筋垫层提高了复合地基中的桩土应力比。
|
| 关 键 词： | 土工格栅 路基变形 桩土应力比 |
| 文章编号： | 1000-7598-（2007）04-0799-04 |
| 收稿时间： | 2005-05-08 |
| 修稿时间： | 2005-05-08 |
Field study of tensile force character of double-layered geogrid in reinforced gravel cushion |
| |
| HU Qi-jun,XIE Qiang,QING San-hui.Field study of tensile force character of double-layered geogrid in reinforced gravel cushion[J].Rock and Soil Mechanics,2007,28(4):799-802. |
| |
| Authors: | HU Qi-jun XIE Qiang QING San-hui |
| |
| Institution: | 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. The Second Railway Survey & Design Institute, Chengdu 610031, China |
| |
| Abstract: | According to field study, it is shown that the tensile force of geogrid in the crosswise direction is largest in the road center; the upper layer reduce 29.5 percent compared with the lower layer in double-layer grid; geogrid of the upper layer in the longitudinal direction works earlier than the lower layer. Track laying can enlarge the value of the tensile force of geogrid in the longitudinal and crosswise directions; but without influence on the roadbed deformation. The reinforced cushion can increase the value of stress ratio of pile to soil inside composite foundation. |
| |
| Keywords: | geogrid roadbed deformation stress ratio of pile to soil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
