- 摘 要
-
趙興雅1，朱世峰1，徐 勇2
(1 中鐵大橋局集團(tuán)武漢橋梁科學(xué)研究院有限公司，武漢430034; 2 西南交通大學(xué)土木工程學(xué)院，成都630034)[摘要] 鋼筋混凝土構(gòu)件一般均為帶裂縫工作，當(dāng)其出現(xiàn)宏觀裂紋后，隨著荷載的增加，裂紋迅速發(fā)展，導(dǎo)致構(gòu)件力學(xué)性能逐漸惡化并最終破壞。根據(jù)鋼、混凝土的各自優(yōu)點(diǎn)，提出了在混凝土結(jié)構(gòu)的受拉側(cè)局部設(shè)置增強(qiáng)鋼板的構(gòu)想。并依據(jù)重慶萬盛藻渡大橋主拱拱腳區(qū)段受力特點(diǎn)對此種結(jié)構(gòu)進(jìn)行了試驗(yàn)研究。結(jié)果表明，混凝土結(jié)構(gòu)的受力性能得到了明顯改善，具有了良好的延性，且有方便施工、經(jīng)濟(jì)省材等優(yōu)點(diǎn)。
[關(guān)鍵詞] 局部增強(qiáng)；鋼-混凝土組合結(jié)構(gòu)；受力性能；試驗(yàn)研究Experimental research on local strengthening of steel-concrete composite structure
Zhao Xingya1, Zhu Shifeng1, Xu Yong 2
(1 Bridge Science Research Institute, China Zhongtie Major Bridge Engineering Group, Wuhan 430034, China; 2 School of Civil Engineering, Southwest Jiaotong University, Chengdu 400074, China)Abstract: The reinforced concrete member is always working with cracks, which developing rapidly with the increased external load, and then failure at last. According to the individual advantages of the steel and the concrete, a new conception was proposed that the enhancing steel plate was locally set at the tensile side of the concrete structure. An experimental scheme was given based on the skewback stress characteristics of the Zaodu Arch Bridge in Wansheng of Chongqing. The results show that the mechanical behavior is improved and the structure owns other characteristics such as good tensility, convenience, economy and so on.
Keywords: local strengthen; steel-concrete composite structure; mechanical behavior; experimental research
- 下載地址
-
