钢筋混凝土建模(Ansys)
好资料,需要很强的英文水平,大家共同学习 A large number of reinforced concrete bridges in the U.S. are structurally deficient by today’sstandards. The main contributing factors are changes in their use, an increase in load
requirements, or corrosion deterioration due to exposure to an aggressive environment. In order to preserve those bridges, rehabilitation is often considered essential to maintain their capability and to increase public safety (Seible, et al. 1995; Kachlakev 1998).
In the last decade, fiber reinforced polymer (FRP) composites have been used for strengthening structural members of reinforced concrete bridges. Many researchers have found that FRP
composite strengthening is an efficient, reliable, and cost-effective means of rehabilitation
(Marshall and Busel 1996; Steiner 1996; Tedesco, et al. 1996; Kachlakev 1998). Currently in
the U.S., the American Concrete Institute Committee 440 is working to establish design
recommendations for FRP application to reinforced concrete (ACI 440 2000).
The Horsetail Creek Bridge is an example of a bridge classified as structurally deficient
(Transportation Research Board 1999; Kachlakev 1998). This historic Bridge, built in 1914, is
in use on the Historic Columbia River Highway east of Portland, Oregon. It was not designed to
carry the traffic loads that are common today. Load rating showed that the bridge had only 6% of the required shear capacity for the transverse beams, 34% of the required shear capacity for the longitudinal beams, and approximately 50% of the required flexural capacity for the
transverse beams (CH2M Hill 1997). There were no shear stirrups in any of the beams. Some
exposed, corroded reinforcing steel was found during an on-site inspection; otherwise, the
overall condition of the structure was generally very good. In 1998, the Oregon Department of Transportation (ODOT) resolved to use FRP composites to reinforce the beams. Strengthening the beams with FRP composites was considered advantageous due to the historic nature of the bridge, limited funding, and time restrictions 不会翻译呀 ，翻译出来的东西觉得怪怪的，呵呵，等翻译完了传上来 谢谢啊谢谢啊谢谢啊谢谢啊
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