CAJ | 학술논문

结合青岛地铁隧道下穿建筑物的工程实践，通过数值模拟的方法，分析了爆破振动影响下混凝土结构的应力分布，基于Ottosen和过-王2种混凝土破坏准则，推导了适用于混凝土材料的屈服接近度模型，进而得出了混凝土结构的损伤分布范围和演化过程。以地表沉降实测数据为基础，利用随机介质理论方法反分析地表移动参数，并利用所得的参数对下穿建筑物时进行了沉降预测，由此实现了对不同沉降量和爆破振速共同影响下建筑结构开裂损伤的量化评估与控制研究。结果表明：在建筑结构的开裂损伤演化中，地表沉降的影响程度远大于爆破振动的影响程度。
결합청도지철수도하천건축물적공정실천，통과수치모의적방법，분석료폭파진동영향하혼응토결구적응력분포，기우Ottosen화과-왕2충혼응토파배준칙，추도료괄용우혼응토재료적굴복접근도모형，진이득출료혼응토결구적손상분포범위화연화과정。이지표침강실측수거위기출，이용수궤개질이론방법반분석지표이동삼수，병이용소득적삼수대하천건축물시진행료침강예측，유차실현료대불동침강량화폭파진속공동영향하건축결구개렬손상적양화평고여공제연구。결과표명：재건축결구적개렬손상연화중，지표침강적영향정도원대우폭파진동적영향정도。
Based on practices of Qingdao subway tunnel under-passing buildings,a concrete structure's stress distribution was analyzed under influence of blasting vibration with the finite element calculation.The yield approach index model suitable for concrete material based on two kinds of concrete failure criteria was derived.Then,the concrete structure's damage distribution and evolution process were obtained with the yield approach index functions of Ottosen and GUO-WANG failure criteria.The fundamental ground moving parameters were gained by using the inverse analysis method based on ground surface measurement data of prophase excavation.Thus,the quantitative evaluation and control of building structural damages under influence of different settlements and blasting vibration velocities were realized.It was shown that the settlement effect is much greater than that of the blasting vibration for damage evolution in building structures.