CAJ | 학술논문

基于一在役40多年的弧形钢闸门，根据主要构件的检测蚀余厚度，采用有限元软件ANSYS以及薄壁结构分析理论，建立反映实际锈蚀情况的三维有限元静动力分析模型，详细计算分析了弧形钢闸门锈蚀前后的应力和变形规律，并对其进行耐久性评估，计算结果表明弧形闸门在锈蚀后应力分布变化明显，闸门强度和稳定性均有不同幅度降低；锈蚀后闸门的振动频率明显降低，考虑水体时，闸门低阶自振频率的下降更为明显，于安全不利。十分必要定期对在役闸门进行安全检测和评价。
기우일재역40다년적호형강갑문，근거주요구건적검측식여후도，채용유한원연건ANSYS이급박벽결구분석이론，건립반영실제수식정황적삼유유한원정동력분석모형，상세계산분석료호형강갑문수식전후적응력화변형규률，병대기진행내구성평고，계산결과표명호형갑문재수식후응력분포변화명현，갑문강도화은정성균유불동폭도강저；수식후갑문적진동빈솔명현강저，고필수체시，갑문저계자진빈솔적하강경위명현，우안전불리。십분필요정기대재역갑문진행안전검측화평개。
Based on an steel arc gate which has worked for more than 40 years ,a three-dimensional finite element model representing actual corrosion situation is built to conduct the static and dynamic analysis .According to the thickness ,the rule of stress and de‐formation of the steel arc gate is calculated and analyzed in detail by using the finite element software ANSYS and the analytic theory of the thin-walled structure .At the same time ,the durability evaluation result turns out to be good .Calculation results show that af‐ter corrosion ,the stress distribution ,the gate strength and the stability have changed differently ,and the vibration frequency of the gate reduces significantly .Especially when work with water ,the natural frequency of vibration reduces more obviously ,which is not good for security .To ensure the normal use of the gate ,it is necessary to conduct safety inspection and evaluation to the gate in serv‐ice regularly .