海水腐蚀钢筋混凝土结构构件承载力的试验研究及人工神经网络理论的应用-结构工程专业论文.docxVIP

摘 摘 要 (工程结构可靠度和耐久性关系工农业生产、人身安全，是关系到国计民生的 大事。但在实际工程中，因耐久性不足造成的损失巨大，日益成为人们关注的焦 点。尤其在近海结构中，结构的耐久性问题已成为目前人们研究的重要课题。J}一7 本文通过对钢筋混猛土结控捡鲑海水腐蚀的促进试验，分别对钢筋混凝土 梁、柱进行了系统的试验研究。对受海水腐蚀破坏的钢筋混凝土构件的破坏类型、 机理进行了深入的分析，以人工神经网络为技术手段，建立受海水腐蚀钢筋混凝 土梁的人工神经网络模型，通过编制相应的计算机程序，对受海水腐蚀的钢筋混 凝土构件承载力进行了分析和预测。 ， f通过本文的研究可以得出这样的结论：海水腐蚀钢筋混凝土结构构件的承载 t 力随循环次数的变化关系是降．升-降，总体趋势是下降的；水灰比对海水腐蚀钢 筋混凝土构件的承载力的影响是水灰比低的钢筋混凝土构件的抗侵蚀能力优于 水灰比高的钢筋混凝土构件的抗侵蚀能力：掺加铁屑可以在一定时期增加钢筋混 凝土构件的承载力；混凝土受盐侵蚀的程度远高于钢筋；在不受腐蚀的条件下， 在钢筋混凝土结构构件中，掺加铁屑不影响钢筋混凝土结构构件的承载力：人工 、 一。 神经网络理论可以用于海水腐蚀钢筋混凝土结构构件的承载力试验研究。厂一r 关键词：耐久性海水腐蚀人工神经网络可靠度 腐蚀机理承载力 AbstractReliability Abstract Reliability and durability of construction structure are very important，because they are closely bound up with production ofagriculture and industry and safety ofhuman．However,in practical project，the loss is vast because of insufficiency of reliability and durability of structure and this series of problem became focus of human’S attention．Therefore。especially in engineering of offshore，reliability and durability of construction structure have ba?aome an import subject in strueture research． In this paper,through aeceleratad experiment of reinforced concrete corroded by salt， experimental research on reinforced concrete beam，column has been systematically done．Deep analysis on broken character,broken types and mechanism of reinforced members corroded by salt has also been done．By means of artificial neural network，mathematical model of broken was set up and corresponsive program Was compiled。resistance of reinforced concrete members corroded by salt has been predicted and analyzed． The following conclusions Can be gotten from this research，relation between times of cycle and resistance of reinforced concrete members corroded by salt call be gotten，rules are decrease then increase then decrease，but the trend iS decrease；corrosion resistance of reinforeed concrete member of 10W water cement ratio iS better than corrosion resistance of reinforeed concrete members of high water cemen