- 摘 要
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李正英1 林文修2 鄭碩才1 段成祿2
（1 重慶大學(xué)土木工程學(xué)院 400045； 2 重慶建筑科學(xué)研究院 400015）[提要] 通過對18m跨雁形板用體外預(yù)應(yīng)力筋加固前后的靜載試驗(yàn)，分析研究了體外預(yù)應(yīng)力加固雁形板這種薄壁板梁組合體系加固前后的受力性能及力學(xué)性能指標(biāo)改善情況，得出體外預(yù)應(yīng)力鋼筋對提高梁受力性能的貢獻(xiàn)。在此基礎(chǔ)上，考慮不同布筋形式對加固效果的影響，尋求合理的加固方法，以滿足實(shí)際工程需要。
[關(guān)鍵詞] 體外預(yù)應(yīng)力 雁形板 試驗(yàn)研究 比擬梁法By means of static loading and destruction test on tw0 18m span bird-shape plates before and after strengthening with external prestresslng, the mechanical property of the strengthened plate is analyzed, and the capability of improving the property of the bird-shape plate is obtained. The influence of different reinforcement method is studied, and the experimental results indicate that the curved line-shape tendon is superior to the straight line-shape tendon. These results are useful in the practical engineering.
Keywords: external prestressing; bird-shape plate; experimental research; analogous beam method; strengthening
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