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    潘  迪，  陳彥江，  閆維明，  楊小森
    （北京工業(yè)大學(xué)建工學(xué)院，北京100124）

[摘要] 針對(duì)鋼筋混凝土簡(jiǎn)支梁橋的破壞狀況多由不同位置的開(kāi)裂裂縫引起，提出了一種針對(duì)鋼筋混凝土簡(jiǎn)支梁橋?qū)嶒?yàn)室模擬裂縫的新方法，以更好地研究鋼筋混凝土簡(jiǎn)支梁橋裂縫的開(kāi)展問(wèn)題。對(duì)試驗(yàn)的設(shè)計(jì)和試驗(yàn)過(guò)程進(jìn)行了描述，對(duì)裂縫的特點(diǎn)進(jìn)行了不同階段的研究。應(yīng)用ANSYS軟件進(jìn)行了非線(xiàn)性加載模擬以及裂縫開(kāi)展模擬，通過(guò)利用實(shí)驗(yàn)室靜力加載鋼筋混凝土簡(jiǎn)支梁試驗(yàn)結(jié)果對(duì)比，認(rèn)為這種分析方法可行。
[關(guān)鍵詞] 簡(jiǎn)支梁橋；開(kāi)裂裂縫；數(shù)值模擬
中圖分類(lèi)號(hào)：TU375.1    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X(2011) S2-0173-04

Study on problems of reinforcement concrete simply supported girder bridge crack development
Pan Di, Chen Yanjiang, Yan Weiming, Yang Xiaosen
( The College of Architecture and Civil Engineering,  Beijing University of Technology,  Beijing 100124,  China)

Abstract: Focus on the destructive forms of civil reinforcement concrete simply supported girder bridge which was destroyed by many different cracks in different position, a new method was suggested which could be used to simulate the cracks on the reinforcement concrete simply supported girder bridge in laboratory, to research the problems of development of cracks on the reinforcement concrete simply supported girder bridge. The design and process of the experiment were described, and the cracks character was researched. ANSYS was used to simulate the process of nonlinear load and the development of cracks,comparing with the results of dates from the experiment. The results were proved feasible.
Keywords: simply supported girder bridge; crack; numerical simulation