基于Monte-Carlo的地铁混凝土碳化环境区划研究  

Carbonization environment zonation of subway concrete based on Monte-Carlo method

作　　者：许超 农兴中[2] 范进[1] 丁建国[1] 缪建红 黄宏坤 Xu Chao;Nong Xingzhong;Fan Jin;Din Jianguo;Miao Jianhong;Huang Hongkun(School of Sciences,Nanjing University of Science and Technology,Nanjin 210094,China;Guangzhou Metro Design and Research Co.,Ltd.,Guangzhou 510010,China)

机构地区：[1]南京理工大学理学院,江苏南京210094 [2]广州地铁设计研究院有限公司,广东广州510010

出　　处：《南京理工大学学报》2020年第1期1-6,共6页Journal of Nanjing University of Science and Technology

基　　金：国家重点研发计划(2017YFB1201204)

摘　　要：为了对我国不同地区地铁混凝土结构所处的碳化环境进行区划,选择已有碳化模型作为地铁混凝土碳化深度预测模型,通过对南京地铁一号线混凝土结构碳化环境和碳化情况的现场测试,以实测数据验证了已有碳化模型的适用性。根据不同地区地铁隧道的环境参数,采用蒙特卡洛法对国内30个城市地铁混凝土碳化寿命进行了分析预测,并以失效概率等于10%为条件,完成了地铁混凝土碳化环境区划。研究结果表明,华北地区地铁混凝土碳化情况较为严重,碳化寿命低于70年,而西南地区碳化现象较轻,碳化寿命大于120年。This paper selects carbonization models available as prediction models of subway concrete carbonization deepness in order to compartment different parts metro concrete carbonization environment in China through texts for carbonization environment and situation of concrete structure in Nanjing metro line 1.The result verifies the adaptability of existing carbonization models.It attains the goal on the condition of 10%probability of failure by using Monte-Carlo method.The result shows that the carbonization of subway concrete in north China is much more serious and the carbonization life is less than 70 years while it is more than 120 years in southwest China.

关 键 词：碳化环境区划 寿命预测 数值计算 地铁混凝土 蒙特卡洛法 

分 类 号：TU921[建筑科学—建筑设计及理论]