CAJ | 학술논문

隧道与地下工程的开挖扰动造成应力的不平衡和重新分配。岩石(土)与衬砌结构两者皆可视为弹塑性体，并且构成相互作用的共同体以抵抗外荷载。岩石与衬砌结构在受到外荷载、地下水渗流、侵蚀性离子的作用时将发生损伤劣化，并进而影响其耐久性与可靠性。详细分析和总结损伤理论应用于混凝土及地下工程结构耐久性研究的现状，探讨和分析 Gurson 细观损伤模型应用于地下工程混凝土结构的方法、模式及步骤，并结合某工程案例分析和描述典型地下结构(构件)在受力情形下及腐蚀侵入后引起钢筋锈蚀的损伤应力数值计算方法，分析结构的耐久性状况及预测其寿命。
수도여지하공정적개알우동조성응력적불평형화중신분배。암석(토)여츤체결구량자개가시위탄소성체，병차구성상호작용적공동체이저항외하재。암석여츤체결구재수도외하재、지하수삼류、침식성리자적작용시장발생손상열화，병진이영향기내구성여가고성。상세분석화총결손상이론응용우혼응토급지하공정결구내구성연구적현상，탐토화분석 Gurson 세관손상모형응용우지하공정혼응토결구적방법、모식급보취，병결합모공정안례분석화묘술전형지하결구(구건)재수력정형하급부식침입후인기강근수식적손상응력수치계산방법，분석결구적내구성상황급예측기수명。
Excavation of tunnelsor underground projects will cause imbalance and redistribution of the stress in them.The rock (soil)and the lining structure both can be regarded as elastic-plastic body,and come into being the in-teraction community to resist external loads.Damage and deterioration will occur in rock and lining structure when sub-jected to the effect of external loads,groundwater seepage and erosive ions,which further affect their durability and reli-ability.In this paper,the current situation of damage theory being used in the durability research of concrete structures and underground projects was analyzed and summarized in detail.Then,Gurson meso-damage-model was discussed and analyzed about its application in underground engineering structures in terms of the method,model and steps.Com-bined with an engineering case,numerical calculation method of damage stress was analyzed and described about the typical underground structure (component)subjected by corrosion of steel bars under the effect of loads and ion ero-sion,so that the durability status and life of structure can be analyzed and predicted.