| 铁路超细粉煤灰预应力混凝土梁疲劳性能试验 |
| |
| 引用本文： | 宋旭明,戴公连,龚雪芬.铁路超细粉煤灰预应力混凝土梁疲劳性能试验[J].铁道科学与工程学报,2008,5(4). |
| |
| 作者姓名： | 宋旭明 戴公连 龚雪芬 |
| |
| 作者单位： | 中南大学,土木建筑学院,湖南,长沙,410075 |
| |
| 摘 要： | 通过9组32m铁路预应力混凝土标准梁的缩尺模型,对掺用超细粉煤灰的预应力混凝土梁在重复荷载作用下的力学性能进行研究,探讨粉煤灰掺量,混凝土等级以及养护条件等因素对铁路桥梁粉煤灰预应力混凝土梁力学性能的影响.试验结果表明:经200万次重复加载后,模型梁静力及动力特性与加载前相比基本不变,超细粉煤灰的合理掺用对梁体疲劳性能没有不利影响,为铁路桥梁粉煤灰预应力混凝土设计参数的选取及应用提供技术支持.
|
| 关 键 词： | 疲劳性能 模型试验 超细粉煤灰 铁路桥梁 |
Fatigue behavior test on railway prestressed concrete bridge with ultra-fine fly ash |
| |
| SONG Xu-ming,DAI Gong-lian,GONG Xue-fen.Fatigue behavior test on railway prestressed concrete bridge with ultra-fine fly ash[J].Journal of Railway Science and Engineering,2008,5(4). |
| |
| Authors: | SONG Xu-ming DAI Gong-lian GONG Xue-fen |
| |
| Abstract: | Based on the tests of 9 sets of model beams of railway prestressed concrete,the fatigue behavior of prestressed concrete beams with ultra-fine fly ash and the effects of the railway prestressed concrete bridge caused by the amount of ultra-fine fly ash,concrete grade,and curing condition were studied.The results show that the static and dynamical characteristic are not changed after two million repeated load.The fatigue behavior of railway prestressed concrete bridge has no disadvantage if the amount of ultra-fine fly ash is moderate.The study provides technical support in design parameter and application for railway prestressed concrete bridge with ultra-fine fly ash. |
| |
| Keywords: | fatigue behavior model test ultra-fine fly ash railway bridge |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
