地铁列车某车库火灾后受损板检测鉴定与加固维修研究

3. 中铁第一勘察设计研究院集团有限公司）

患，提高了结构的承载力与耐久性。

关键词：高受损板；显微结构分析；荷载试验；检测鉴定；加固维修

中图分类号：TU375

(1. Gansu civil engineering science research institute co. LTD;

2. Gansu Province Engineering Design Institute Co. Ltd;

3. China Railway First Survey and Design Institute Group Co.Ltd)

Abstract: In this paper, a subway train carbarn damaged plate after fire as an example,through the

analysis of microstructure, physical and mechanical performance, the scene in situ methods of

load test, damaged plate detection and identification after fire are studied.The contents and

methods of detection and identification of damaged plate after fire are studied, which provides

technical basis for damage evaluation,maintenance and reinforcement of structures after disasters.

the bearing capacity and durability of the structure are improved.

Key words: damaged plate；analysis of microstructure；load test；detection and appraisal；

reinforcement and maintenance

高为 9.5m。某年 10 月下旬某日下午，该建筑在建工地发生火灾事故，浇筑混凝土所用木方、

木板、模板起火。采用水冷法在 2 个小时后明火被扑灭，剩余零星火点。约 2 小时后全部

扑灭，过火总面积多达 5595 ㎡，车库过火区域见图 1。

爆裂剥落、开裂以及锤击反应进行推定。通过温度推定及初步鉴定，初步判断结构损伤程度。

的过火温度进行推定，详见表 1。

下图 4 所示。

大部分结构板初步评级为 II

级，受到轻度烧灼作用；C～E 轴线间有 8 块板初步评级为 III

级，受到中度烧灼；C～D 轴线有 5 块结构板初步评级为 IV 级，受到重度烧灼。