用鋼板膨脹螺栓加固鋼筋混凝土梁的研討
楊根喜 濮志鋒 張學(xué)宏
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楊根喜 濮志鋒 （蘇州市民用建筑設(shè)計(jì)院 215007）張學(xué)宏 （蘇州市建筑職工大學(xué) 215021）
[提要] 通過對采用- 50×4以及- 80×6鋼板膨脹螺栓加固的鋼筋混凝土梁與未加固的鋼筋混凝土梁的靜荷載對比試驗(yàn)，對用該方法加固后梁的剛度、承載能力的提高效能和裂縫開展情況以及加固用的鋼板截面、螺栓間距等問題進(jìn)行了分析探討。
[關(guān)鍵詞] 鋼板 膨脹螺栓 加固 鋼筋混凝土梁
This essay analyzes the rigidity,improved efficiency of bearing capaclty and the development of crack on the reinforced concrete beam which is strengthened by steel plate( - 50×4 and - 80×6)and expanding screw through contrasting experiment of static load between the strengthened beam and the non-strengthened beam.The article also explores the problems about the surface area of steel plate and the interval of screw.
Keywords: reinforced concrete beam; strengthening; steel plate; expanding screw
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