- 摘 要
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楊濤春，李國強，陳素文
(同濟大學，上海200092)[摘要] 采用有限元模型并利用LS-DYNA軟件對三種不同接觸爆炸荷載位置情況下鋼-混凝土組合梁的動力響應(yīng)進行了研究，并對梁的變形過程、鋼梁最大豎向位移及各主要截面內(nèi)力進行了詳細分析對比，結(jié)果表明，局部接觸爆炸作用下鋼-混凝土組合梁以荷載區(qū)局部變形為主，爆炸荷載中心處鋼梁豎向位移最大，爆炸荷載位置對荷載作用區(qū)內(nèi)鋼-混凝土組合梁的內(nèi)力影響較小。
[關(guān)鍵詞] 鋼-混凝土組合梁；接觸爆炸荷載；荷載位置；動力響應(yīng)Research on the dynamic response of steel-concrete composite beam under different contact blast loading position
Yang Taochun, Li Guoqiang, Chen Suwen
(Tongji University, Shanghai 200092, China)Abstract: To understand the behavior of steel-concrete composite beam under different contact blast loading position, proper finite element modes are constructed and investigated under three kinds of blast loading position. The process of deformation and displacement of the beam, internal force on the main sections are described in detail. It is demonstrated that local deformation is a main deformation form in the loading area. The largest vertical deformation of the steel beam is in the center of the loading area. Loading position has little effect on internal force of the beam in the loading region.
Keywords: steel-concrete composite beam; contact blastloading; loading position; dynamic responses
