原文传递
The effect of temperature variations on the camber of precast, prestressed concrete girders
| 题名： | The effect of temperature variations on the camber of precast, prestressed concrete girders |
| 其他题名： | 1.Tadros,M.K.,F.Fawzy,and K.Hanna.2011."Precast,Prestressed Girder Camber Variability."PCI Journal 56(1):135-154. |
| 正文语种： | 英文 |
| 作者： | Hang Nguyen |
| 关键词： | Bridge;camber;girder;temperature |
| 摘要： | It is important to estimate girder camber accurately because differences between expected and actual camber can lead to construction challenges or girder rejection. Field measurements of daily variations in temperature profile and camber for two precast, prestressed concrete girders provided data with which to calibrate models of the effect of temperature variations on camber. Using measured temperature profiles over the height of the girder, the associated camber history was accurately computed, assuming a coefficient of thermal expansion of 5.5 X 10"6/oF(9.9 X 10VC). Two practical methods were also developed using 164 observations from 24 girders. To implement the simpler method (peak temperature camber method), the designer needs only to know the girder's length and depth and to estimate the maximum change in air temperature during the day, which is available from meteorological stations. The errors in the resulting models had root mean square average camber over time of about 0.1 in. (2.5 mm). |
| 出版年： | 2015 |
| 论文唯一标识： | J-30Y2015V60N05026 |
| 英文栏目名称： | PCI Journal's 60th Anniversary |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 拼音刊名(出版物代码)： | J-30 |
| 卷： | 60 |
| 期： | 05 |
| 页码： | 48-64 |
相关文献
- Enhanced camber and deflection estimation for AASHTO prestressed concrete girders
- Enhanced camber and deflection estimation for AASHTO prestressed concrete girders
- Enhanced camber and deflection estimation for AASHTO prestressed concrete girders
- DISCUSSION: Use of Unstressed Strands for Connections of Precast Concrete Members
- DISCUSSION: Use of Unstressed Strands for Connections of Precast Concrete Members
- Expected compressive strength in precast, prestressed concrete design: Review and discussion of regional practice
检索历史
应用推荐
