Based on the current research achievements on durability under chloride environment , probability theory , structural reliability theory , concrete structures theory , neural network theory and structure dynamic theory are employed comprehensively in this dissertation . some problems of durability of reinforced concrete structures under chloride environment were studied through the exploitation of experimental data , the rule of chloride ingress and steel bar corrosion , the performance of corroded member , and residual life prediction . the main issues and results in this dissertation are as follows : 1 、 the probability method for the prediction of durable life based on the stipulated reliability index for concrete structures under chloride environment is presented in this dissertation 本论文在国内外对氯离子侵蚀环境下混凝土结构耐久性研究成果的基础上,综合运用概率理论、结构可靠性理论、混凝土结构理论、神经网络理论、结构动力学理论等基本理论和方法,结合实际检测数据,按照氯离子侵蚀、钢筋锈蚀、锈蚀构件性能、锈蚀构件寿命预测的思路对氯离子侵蚀环境下钢筋混凝土结构耐久寿命预测的有关问题进行了深入系统地研究,完成以下主要研究工作并取得相应成果: 1 、提出了氯离子侵蚀下基于规定可靠指标的混凝土结构耐久寿命的概率计算方法。
Abstract : durability zonation standard ( dzs ) is proposed to provide useful parameters for durable concrete structure design . it deals not only with the influence of environment on structures , but also with types , functions and importance of structures based on the theory of life cycle cost ( lcc ) . first , the basic concept of dzs for concrete structure design is defined . then the basic principles for dzs are established . the factors for zonation according to natural environmental conditions and structural importance are identified . the usefulness of dzs by citing a real application for concrete highway bridges in zhejiang province is demonstrated . finally , durability regulations are provided accordingly to zonation 文摘:混凝土结构耐久性环境区划标准的目的就是为混凝土结构耐久性设计提供合理的设计参数.混凝土结构耐久性环境区划标准在结构全寿命周期成本原理基础上考虑了环境对结构的影响,并将结构的重要性、结构形式和功能等多方面因素一并纳入考虑之中.首先给出了混凝土结构设计耐久性环境区划标准的概念和建立该标准的3个基本原则,其次根据自然环境条件和结构重要性等确定了区划的主要影响因素,然后以浙江省公路桥梁结构耐久性环境区划图的编制为例说明了混凝土结构耐久性环境区划的可行性与实用性,最后根据区划图给出了耐久性区划标准的若干设计规定
Durability zonation standard ( dzs ) is proposed to provide useful parameters for durable concrete structure design . it deals not only with the influence of environment on structures , but also with types , functions and importance of structures based on the theory of life cycle cost ( lcc ) . first , the basic concept of dzs for concrete structure design is defined . then the basic principles for dzs are established . the factors for zonation according to natural environmental conditions and structural importance are identified . the usefulness of dzs by citing a real application for concrete highway bridges in zhejiang province is demonstrated . finally , durability regulations are provided accordingly to zonation 混凝土结构耐久性环境区划标准的目的就是为混凝土结构耐久性设计提供合理的设计参数.混凝土结构耐久性环境区划标准在结构全寿命周期成本原理基础上考虑了环境对结构的影响,并将结构的重要性、结构形式和功能等多方面因素一并纳入考虑之中.首先给出了混凝土结构设计耐久性环境区划标准的概念和建立该标准的3个基本原则,其次根据自然环境条件和结构重要性等确定了区划的主要影响因素,然后以浙江省公路桥梁结构耐久性环境区划图的编制为例说明了混凝土结构耐久性环境区划的可行性与实用性,最后根据区划图给出了耐久性区划标准的若干设计规定
