爆炸与冲击2024，Vol.44Issue(7)：155-171,17.DOI:10.11883/bzycj-2023-0400
地面爆炸作用下地下综合管廊动力响应的实验研究
Experimental study on dynamic response of underground utility tunnel under ground explosion
摘要
Abstract
To investigate the anti-external-blast performance of underground utility tunnel structures,field explosion tests were conducted to study the dynamic response characteristics and failure modes of cast-in-place and precast segmental utility tunnel structures subjected to the ground surface explosion. Via field explosion tests of 11 cases,the failure characteristics and dynamic responses of cast-in-place and precast segmental utility tunnels under explosion at different scaled distances were observed. The anti-blast performance of the cast-in-place and precast segmental utility tunnels was compared and analyzed. The research results indicate that both the roofs of cast-in-place and precast segmental utility tunnels ultimately exhibit bending and shear failure when subjected to ground explosion. The anti-blast performance of the cast-in-place utility tunnel is better than that of the precast segmental utility tunnel. The detonation position has a significant impact on the blast response of the precast segmental utility tunnel,and it is unfavorable when the detonation position is above the center of the segment. Under a small-scale ground surface explosion,the damaged area of the cast-in-place utility tunnel is larger than that of the precast segmental utility tunnel. The damage of the precast segmental utility tunnel is concentrated in the section or connection joint located near the explosion center,and there is a significant residual slip between segments.关键词
地下综合管廊/预制节段拼装/地面爆炸实验/动力响应/破坏模式Key words
underground utility tunnel/precast segmental assembling/ground explosion experiment/dynamic response/failure mode分类
数理科学引用本文复制引用
钱海敏,潘亚豪,宗周红,甘露,吴熙,孙苗苗..地面爆炸作用下地下综合管廊动力响应的实验研究[J].爆炸与冲击,2024,44(7):155-171,17.基金项目
国家重点研发计划(2021YFC3100700) （2021YFC3100700）
国家自然科学基金(52308535) （52308535）
