预应力刚接空心板梁桥火灾后检测与鉴定

Post-fire Inspection and Appraisal of Prestressed Rigid-connected Hollow Slab Beam Bridge

摘要:

火灾对桥梁结构的损伤可能严重影响桥梁的安全性和稳定性，及时地进行损伤鉴定是至关重要的。准确评估损伤程度和范围有助于为后续的加固和修复工作提供准确的数据支持，从而确保桥梁能够尽快恢复正常使用。通过实际刚接空心板梁桥火灾工程案例，系统实施现场检测、损伤等级评定、技术状况评定及承载能力验算。据此提出针对性维修加固建议，所形成的案例经验与方法可为后续类似桥梁火灾后的灾后应急抢险工作提供参考依据。

Abstract:

Fire-induced damage to bridge structures may seriously affect the safety and stability of the bridge. It is very important to carry out the damage appraisal in time. The accurate evaluation of the extent and scope of damage helps provide precise data support for subsequent reinforcement and repair work, thereby ensuring that the bridge can be restored to normal use as soon as possible. Through actual fire engineering cases of rigidly connected hollow slab beam bridges, the on-site inspection, damage level rating, technical condition assessment and load-bearing capacity checking calculation are systematically implemented. According to this, the targeted maintenance and reinforcement recommendations are proposed. The achieved case experience and methods can provide the reference basis for the post-fire emergency rescue of the similar bridges.