- 摘 要
-
（1 甘肅土木工程科學研究院有限公司， 蘭州 730020；2 寧波大學科學技術學院， 寧波 315211； 3 中鐵第一勘察設計研究院集團有限公司， 西安 710043）
［摘要］以某地鐵車庫火災后受損板為例，通過顯微結構分析、結構物理力學性能檢測、現(xiàn)場原位荷載試驗等方法，對火災后受損板進行了檢測鑒定與加固維修研究。研究火災后受損混凝土結構的檢測鑒定內(nèi)容與方法，為災后結構的損傷評價及后續(xù)的維修與加固提供技術依據(jù)。提出了一種火災后受損結構鑒定評級層次劃分與評級標準，可補充火災后混凝土結構損傷程度的評級問題。根據(jù)檢測鑒定結果評定火災受損結構構件的損傷等級，對不同程度受損的結構構件進行了加固與維修設計。通過加固與維修，消除了火災后結構的安全隱患，提高了結構的承載力與耐久性。
［關鍵詞］受損板； 顯微結構分析； 荷載試驗； 檢測鑒定； 加固維修
中圖分類號：TU375文獻標識碼：A文章編號：1002-848X(2020)06-0073-08
Study on the inspection and repair of damaged panels after a subway carbarn fire
An Guicang1, Wei Changbao1, He Zhongmao2, Teng Wenchuan1, Qian Ming1, Huang Yongan3
(1 Gansu Civil Engineering Science Research Institute Co., Ltd., Lanzhou 730020, China;2 College of Science & Technology, Ningbo University, Ningbo 315211, China;3 China Railway First Survey and Design Institute Group Co., Ltd., Xi′an 710043, China)
Abstract:Taking the damaged plate after a fire in a subway train carbarn as an example, through the methods of microstructure analysis, physical and mechanical properties detection of the structure, field in-situ load test, the damaged slab after a fire was tested, identified and reinforced. The content and method of detection and appraisal of damaged concrete structure after fire was studied, to provide technical basis for damage assessment and subsequent maintenance and reinforcement of structure after fire. A classification and standard for the appraisal of damaged structures after fire was proposed to supplement the evaluation of damage degree of concrete structures after fire. According to the results of detection and appraisal, the damage grade of fire damaged structural members was evaluated, and the reinforcement and maintenance design of structural members with different degrees of damage were carried out. Through reinforcement and maintenance, the hidden danger of the structure after fire was eliminated, and the bearing capacity and durability of the structure were improved.
Keywords:damaged plate; microstructure analysis; load test; detection and appraisal; reinforcement and maintenance
通訊作者：魏常寶，高級工程師，Email: dable2005@126.com。
