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| | Rigid-framed structure functions differently from hinge-framed one when used for aseismatic reinforcement. In this paper,a practical construction project is specially chosen for comparison and analysis in internal force calculation. With reference to the theory and method of structural design,a conclusion is drawn as a guidance of conceptual design of anti-seismic reinforcement. | | 刚接框架与铰接框架结构厂房在抗震加固中应各有所侧重.本文选取一工程实例进行内力计算,比较分析,结合结构设计的理论和方法得出结论,以指导抗震加固的概念设计. | | 文摘来源 | | As known from many engineering practices,cracking in prestressed concrete continuous box girder is serious.A study on mechanism of its cracking and reinforcing method of the cracks becomes a hot spot.In this paper the several familiar crack forms are presented and the reasons of cracking analyzed.On the basis of thorough study on the cracks and reinforcing practices in many years,the design method based on reinforcing concept is put forward.Last,the application and effects of the method are showed by a exam... | | 经过大量的工程应用,预应力混凝土连续箱梁裂缝问题暴露明显,针对其开裂原因、加固方法的研究成为热点。本文通过资料的收集整理,总结了常见的裂缝形态,并分析了开裂原因。在对裂缝深入研究和多年加固实践的基础上,提出了加固概念设计的方法。通过一个预应力混凝土连续箱梁裂缝的加固设计,展示了该方法的应用过程与效果。 | | 文摘来源 | |   |
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