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前 言 刚架拱结构具有污工体积小、重量轻、预制件多、现浇数量少、制造安装工序简便等优点。它能充分利用吊装设备,可连续加载施工,对下部构造及地基承载力的要求也比较低。通过我省双峰县溪口桥的建成,说明其经济性和便利施工的效果是十分显著的。设计中曾采用了力法和混合法来分析刚架拱的内力。混合法较之力法更有优越性,这就是本文要介绍的主要内容,现刊载出来借以抛砖引玉,供研究探讨。
Preface rigid frame arch structure has the advantages of small size, light weight, many prefabricated parts, less pouring quantity, simple manufacturing and installation process. It can take full advantage of lifting equipment, continuous loading construction, the lower part of the structure and foundation bearing capacity requirements are relatively low. Through the completion of Xikou Bridge in Shuangfeng County of our province, the effect of economy and convenience construction is very significant. In the design, the force method and the hybrid method were used to analyze the internal force of rigid frame arch. Mixed law is more superior than the force method, this is the main content of this article to be introduced, now published in order to start a discussion for research.