山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2012年
24期
50-51
,共2页
钢板%混凝土%脱粘%数值分析
鋼闆%混凝土%脫粘%數值分析
강판%혼응토%탈점%수치분석
steel plate%concrete%debonding%numerical analysis
采用数值计算的方法对混凝土混合裂缝引起钢板加固混凝土梁的脱粘行为进行了详细的分析,研究结果表明,混合裂缝的端部存在比较大的应力集中,是导致钢板脱粘的主要原因,混凝土开裂和钢板脱粘在整个加载过程中同时发生;脱粘从混合裂缝开始向跨中进行,而在裂缝和两端之间的部分没有脱粘发生。
採用數值計算的方法對混凝土混閤裂縫引起鋼闆加固混凝土樑的脫粘行為進行瞭詳細的分析,研究結果錶明,混閤裂縫的耑部存在比較大的應力集中,是導緻鋼闆脫粘的主要原因,混凝土開裂和鋼闆脫粘在整箇加載過程中同時髮生;脫粘從混閤裂縫開始嚮跨中進行,而在裂縫和兩耑之間的部分沒有脫粘髮生。
채용수치계산적방법대혼응토혼합렬봉인기강판가고혼응토량적탈점행위진행료상세적분석,연구결과표명,혼합렬봉적단부존재비교대적응력집중,시도치강판탈점적주요원인,혼응토개렬화강판탈점재정개가재과정중동시발생;탈점종혼합렬봉개시향과중진행,이재렬봉화량단지간적부분몰유탈점발생。
The paper adopts the numerical calculation to analyze the debonding of the concrete beam strengthened by steel plates caused by the mixed mode fracture,proves by the research result that the ends of the mixed mode fracture having larger stress concentration are the main reason for the debonding of the steel plate and the simultaneous process of the concrete cracks and the debonding at the steel plates in the loading procedure,and indicates the debonding occurs from the mixed mode fracture to the mid-span and there is no debonding at the parts between the cracks and the ends.
