肇慶西江特大橋船撞事故后搶修及加固技術(shù)
發(fā)布時間：2018-09-07 16:34
【摘要】：肇慶西江特大橋主橋為5×144m連續(xù)鋼桁梁公鐵兩用橋,該橋于2015年10月15日遭受采砂船舶碰撞,造成第4孔第5個節(jié)間鋼桁梁桿件嚴(yán)重變形,危及鐵路行車安全。根據(jù)構(gòu)件變形及受損狀況分析,確定采用拆除上游側(cè)嚴(yán)重受損的縱梁,利用魚腹式鋼縱梁臨時代替,暫時保留下游側(cè)輕微受損縱梁的臨時加固方案對鐵路橋進(jìn)行快速搶修加固,并在快速搶修后進(jìn)行行車試驗。結(jié)果表明,橋梁滿足列車通行要求,實現(xiàn)了鐵路線快速搶通。在鐵路快速搶通后,利用"天窗點"時段更換鐵路下平聯(lián)及縱梁,對下弦桿進(jìn)行局部冷矯正及補(bǔ)強(qiáng),完成永久加固修復(fù)后通過行車試驗測試橋梁運營的各項動力性能。結(jié)果表明,各項指標(biāo)均符合規(guī)范要求,滿足列車正常運營需求。
[Abstract]:The main bridge of Zhaoqing Xijiang River Bridge is a 5 脳 144m continuous steel truss bridge. The bridge was collided with sand mining ships on October 15, 2015, which caused serious deformation of the steel truss members of the 5th Internode of the 4th hole and endangered the safety of railway operation. According to the analysis of the deformation and damage condition of the components, it is determined to remove the severely damaged longitudinal beam on the upstream side, to use the fish-bellied steel longitudinal beam as a temporary replacement, and to temporarily retain the temporary reinforcement scheme of the slightly damaged longitudinal beam on the downstream side to carry out rapid repair and reinforcement of the railway bridge. After quick repair, train test was carried out. The results show that the bridge meets the requirements of train traffic and realizes the rapid railway route recovery. After the railway is quickly recovered, the bridge is replaced by "skylight point" in the period of time, and the local cooling correction and reinforcement of the lower chord are carried out. After permanent reinforcement and repair, the dynamic performance of the bridge is tested through driving test. The results show that all the indexes meet the requirements of the specification and meet the normal operation requirements of the train.
【作者單位】： 廣州鐵路(集團(tuán))公司;中鐵大橋局武漢橋梁特種技術(shù)有限公司;橋梁結(jié)構(gòu)健康與安全國家重點實驗室;
【分類號】：U445.7
本文編號：2228809
[Abstract]:The main bridge of Zhaoqing Xijiang River Bridge is a 5 脳 144m continuous steel truss bridge. The bridge was collided with sand mining ships on October 15, 2015, which caused serious deformation of the steel truss members of the 5th Internode of the 4th hole and endangered the safety of railway operation. According to the analysis of the deformation and damage condition of the components, it is determined to remove the severely damaged longitudinal beam on the upstream side, to use the fish-bellied steel longitudinal beam as a temporary replacement, and to temporarily retain the temporary reinforcement scheme of the slightly damaged longitudinal beam on the downstream side to carry out rapid repair and reinforcement of the railway bridge. After quick repair, train test was carried out. The results show that the bridge meets the requirements of train traffic and realizes the rapid railway route recovery. After the railway is quickly recovered, the bridge is replaced by "skylight point" in the period of time, and the local cooling correction and reinforcement of the lower chord are carried out. After permanent reinforcement and repair, the dynamic performance of the bridge is tested through driving test. The results show that all the indexes meet the requirements of the specification and meet the normal operation requirements of the train.
【作者單位】： 廣州鐵路(集團(tuán))公司;中鐵大橋局武漢橋梁特種技術(shù)有限公司;橋梁結(jié)構(gòu)健康與安全國家重點實驗室;
【分類號】：U445.7
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