CAJ | 학술논문

某台风电机组运行数年后预埋钢环与基础混凝土脱开，为分析基础内部应力状态并为基础加固提供意见，采用FLAC3D三维有限差分软件，建立考虑混凝土基础、预埋式基础环、土体共同作用的整体模型。计算结果表明，基础环与基础台柱（以下简称“台柱”）顶面接触处、台柱与底板交界处、基础环底法兰下延长线与底板底面交界处应力较大；加固阶段若增大台柱半径，台柱与底板交界处应力将减小，但基础底板由基础环冲切引起的拉应力未减小；台柱半径大小不是基础环与基础脱开的决定因素。
모태풍전궤조운행수년후예매강배여기출혼응토탈개，위분석기출내부응력상태병위기출가고제공의견，채용FLAC3D삼유유한차분연건，건립고필혼응토기출、예매식기출배、토체공동작용적정체모형。계산결과표명，기출배여기출태주（이하간칭“태주”）정면접촉처、태주여저판교계처、기출배저법란하연장선여저판저면교계처응력교대；가고계단약증대태주반경，태주여저판교계처응력장감소，단기출저판유기출배충절인기적랍응력미감소；태주반경대소불시기출배여기출탈개적결정인소。
A wind turbine separated from the concrete foundation afer running for several years. In order to analyze the state of stress and give advice to foundation reinforcement, analysis of 3 Dimensions (FLAC3D) was applied to create the model consist of reinforced concrete, embedded steel ring and soil. Te calculation results illustrated that the stress of the following regions are relatively large:the contact boundary of steel ring and top surface of the foundation pillar, the contact boundary of the foundation pillar and plate, the junction of the extension line of the botom fange of the steel ring and the foundation plate. Increasing the pillar radius caused the decrease of stress of the contact boundary of the foundation pillar and plate, while the tensile stress of foundation plate caused by the steel punching was not decreased. Te size of pillar radius is not the determinant of base ring and base of.