预应力碳纤维加固技术在某大桥中的应用
|
摘要
随着桥梁加固技术的发展,目前预应力碳纤维板加固技术广泛应用于桥梁结构中。本文以工程实例为背景,详细说明了预应力碳纤维板加固设计方案,并根据现行规范要求,基于桥梁博士有限元软件,对加固前后的受力情况进行了对比分析。加固后桥梁的刚度、抗裂以及承载能力明显提高,达到了设计要求,延长了桥梁的使用寿命。
With the development of bridge strengthening technology, the prestressed carbon fiber plate strengthening technology is widely used in bridge structures. Taking an engineering example as the background,the prestressed carbon fiber plate reinforcement design scheme was shown in detail in this paper. Then according to the current code requirements, and based on the bridge doctor finite element software, the stress before and after reinforcement was compared and analyzed. The stiffness, crack resistance and bearing capacity of the bridge after reinforcement were obviously improved, which met the design requirements and extended the service life of the bridge.
With the development of bridge strengthening technology, the prestressed carbon fiber plate strengthening technology is widely used in bridge structures. Taking an engineering example as the background,the prestressed carbon fiber plate reinforcement design scheme was shown in detail in this paper. Then according to the current code requirements, and based on the bridge doctor finite element software, the stress before and after reinforcement was compared and analyzed. The stiffness, crack resistance and bearing capacity of the bridge after reinforcement were obviously improved, which met the design requirements and extended the service life of the bridge.
引文
[1]张树仁,王宗林编著.桥梁病害诊断与改造加固设计[M].北京:人民交通出版社.2006
[2]JTG/T J22-2008公路桥梁加固设计规范[S]JTG/TJ22-2008 Specifications for strengthening design of highway bridges[S]
[3]GB 50367-2013混凝土结构加固设计规范[S]GB 50367-2013 Code for design of strengthening concrete structures[S]
[4]GB 50010-2010混凝土结构设计规范[S]GB 50367-2013 Code for design of concrete structures[S]
[5]CJJ/T239-2016城市桥梁结构加固技术规程[S]CJJ/T239-2016 Technical rules for reinforcement of urban bridge structures[S]
[2]JTG/T J22-2008公路桥梁加固设计规范[S]JTG/TJ22-2008 Specifications for strengthening design of highway bridges[S]
[3]GB 50367-2013混凝土结构加固设计规范[S]GB 50367-2013 Code for design of strengthening concrete structures[S]
[4]GB 50010-2010混凝土结构设计规范[S]GB 50367-2013 Code for design of concrete structures[S]
[5]CJJ/T239-2016城市桥梁结构加固技术规程[S]CJJ/T239-2016 Technical rules for reinforcement of urban bridge structures[S]