| 基于挠度试验的梁式结构评估 |
| |
| 引用本文： | 周敉,贺拴海,宋一凡.基于挠度试验的梁式结构评估[J].长安大学学报(自然科学版),2004,24(5):40-42,47. |
| |
| 作者姓名： | 周敉 贺拴海 宋一凡 |
| |
| 作者单位： | 长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064 |
| |
| 基金项目： | 陕西省自然科学基金项目(2002E205) |
| |
| 摘 要： | 寻求一种简单高效的方法对大量在役钢筋混凝土梁式桥的结构性能进行评估,意义重大。从钢筋混凝土结构设计原理出发,分析截面弯矩、曲率、挠度、受压区高度之间的相互关系;推导出钢筋混凝土梁式桥在简单活荷载作用下的挠度和名义配筋率之间的互换公式;并以承载力储备因子评定桥梁结构的承载力。实桥试验表明挠度试验法简便可靠,为钢筋混凝土桥梁承载力评定带来较大的方便。
|
| 关 键 词： | 桥梁工程 钢筋混凝土梁 挠度试验 配筋率 承载力储备因子 |
| 文章编号： | 1671-8879(2004)05-0040-03 |
| 修稿时间： | 2004年1月17日 |
Structural evaluation for beams based on deflection testing |
| |
| ZHOU Mi,HE Shuan-hai,SONG Yi-fan.Structural evaluation for beams based on deflection testing[J].JOurnal of Chang’an University:Natural Science Edition,2004,24(5):40-42,47. |
| |
| Authors: | ZHOU Mi HE Shuan-hai SONG Yi-fan |
| |
| Abstract: | It is significant to make an accurate evaluation for existing RC beams by a simple way. This paper studied the relationship among bending moment, curve, deflection and concrete compression height by design principle for reinforced concrete structure. A method for the reinforcement ratio of the beams based on deflection testing was proposed. The inventory rating factor is used to evaluate the structural capability of beams. Then an existing concrete slab bridge was evaluated by deflection testing way. The results indicate that this method is credible and is an effective means for strength evaluation of existing concrete bridge. |
| |
| Keywords: | bridge engineering RC beams deflection testing rate of reinforcement inventory rating factor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
