Damage to Oil Tanks Caused by Severe Strong Ground Motion due to the 2018 Hokkaido, Japan Iburi-tobu Earthquake (Mw6.6)
Damage to Oil Tanks Caused by Severe Strong Ground Motion due to the 2018 Hokkaido, Japan Iburi-tobu Earthquake (Mw6.6)
复制标题
2018年日本北海道胆振东部地震（Mw6.6）强烈地震动造成油罐受损
DOI：
10.1115/pvp2020-21447
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Koya Tokutake
中科院分区：
文献类型：
--
作者：
Ken Hatayama;Haruki Nishi;Masahiko Hayashi;Koya Tokutake
本文报道了2018年9月6日日本北海道胆振东部地区发生的Mw6.6级大地震，强烈地震动对油罐造成的损坏和影响。震源区附近有两个大型原油储存基地。邻近的两个基地共有大型储油罐86个，容量11.5万立方米。储油基地受到强烈地震动的影响，峰值地面加速度为590至1,570厘米/秒2，峰值地面速度为50至80厘米/秒。小型掩体的壳板 容量为306立方米的罐体出现菱形屈曲和象脚屈曲。尽管发生强烈地震动，但没有大型储油罐丧失储油功能。但大部分浮顶与壳板间隙溅油，不少浮桥、测杆、导杆、滚梯、液位计、基础台肩等都受到损坏。其中一个容量为 115,000 立方米的储罐配备了位移计系统，用于测量罐体板底部相对于储罐基础肩部的隆起量。系统记录的最大抬升为 4.4 厘米。这是世界上首次因自然地震导致大型储罐隆起的记录。
Damage and influences to oil tanks caused by severe strong ground motion due to a large earthquake (Mw6.6) that occurred in the district of Iburi-tobu, Hokkaido, Japan on September 6, 2018 are reported in this paper. In the vicinity of the seismic source region, two large-scale crude-oil storage bases are located. The neighboring two bases had in total 86 large oil storage tanks with a capacity of 115,000 m3. The oil storage bases were hit by strong ground motion with peak ground accelerations of 590 to 1,570 cm/s2and with peak ground velocities of 50 to 80 cm/s. Shell plates of a small bunker A tank with a capacity of 306 m3suffered diamond buckling and elephant-foot buckling. No large oil storage tanks lost their function of oil storage despite of the severe strong ground motion. However, most of them splashed oil from the gap between the floating roof and the shell plate, and many of them had damage to their pontoons, gauge poles, guide poles, rolling ladders, liquid-level meters, and shoulders of foundation. One of the 115,000-m3-in-capacity tanks was equipped with a displacement gauge system to measure uplift of the bottom of the shell plate from the shoulder of tank foundation. The system recorded a maximum uplift of 4.4 cm. This is the world’s first record of uplift of a large tank caused by a natural earthquake.