受损中心锥体筒仓病害分析及加固方案设计  

Defect Analysis and Reinforcement Design of Damaged Central Cone Silo

作　　者：刘文达 孙巍巍[1] 易建荣 廖文静 汪晨晨 

机构地区：[1]南京理工大学土木工程系,210094 [2]中材国际南京水泥工业设计研究院,210029

出　　处：《特种结构》2017年第6期67-71,共5页Special Structures

基　　金：国家自然科学基金(51308297);南京市建设系统科研项日(Ks1717);江苏省研究生实践创新计划项目(SJCX17_0116)

摘　　要：为了探讨受损中心锥体筒仓的病害原因,将实际工程中的6个中心锥体筒仓进行对比分析。检测过程中发现筒仓主要存在混凝土保护层剥落,钢筋外露、锈蚀和竖向裂缝等损伤,综合检测报告结果,从环向钢筋的配置、保护层厚度、混凝土强度及碳化效应几个方面进行分析,总结导致出现病害的原因,并采用外浇混凝土套筒和体外环向预应力等加固技术来对筒仓进行加固,使受损中心锥体筒仓恢复正常使用。对于同类工程的修复加固有一定的参考意义。In order to investigate the mechanism of the damaged center cone silo, six center cone silos in engineering practice were analyzed. Silos were found out to have several kinds of damage, such as the damaged concrete protective layer, the exposed and corrosive reinforcement, and the vertical crack etc. This paper summarized the causes leading to the damage, and analyzed the causes of these problems from reinforcement ratio of ring reinforcement, thickness of protective layer, concrete strength, and carbonization effect. The rehabilitation actions such as pouring concrete outside sleeve and arrangingring prestress reinforcement in vitro were taken to make the damaged center cone silo resume the normal working state. The work can provide useful reference for future similar projects.

关 键 词：中心锥体筒仓 裂缝 缺陷分析 环向预应力 加固 

分 类 号：TU746.3[建筑科学—建筑技术科学]