|本期目录/Table of Contents|

[1]张守旸,宗琦,吕闹.沉箱码头聚脲涂层抗爆防护毁伤效应数值模拟*[J].中国安全生产科学技术,2021,17(1):162-168.[doi:10.11731/j.issn.1673-193x.2021.01.026]
 ZHANG Shouyang,ZONG Qi,LYU Nao.Numerical simulation of anti-explosion protection and damage effect of polyurea coating on caisson wharf[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(1):162-168.[doi:10.11731/j.issn.1673-193x.2021.01.026]
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沉箱码头聚脲涂层抗爆防护毁伤效应数值模拟*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年1期
页码:
162-168
栏目:
职业安全卫生管理与技术
出版日期:
2021-01-31

文章信息/Info

Title:
Numerical simulation of anti-explosion protection and damage effect of polyurea coating on caisson wharf
文章编号:
1673-193X(2021)-01-0162-07
作者:
张守旸宗琦吕闹
(安徽理工大学 土木建筑学院,安徽 淮南 232001)
Author(s):
ZHANG Shouyang ZONG Qi LYU Nao
(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan Anhui 232001,China)
关键词:
沉箱码头聚脲涂层水下爆炸毁伤效应非接触爆炸
Keywords:
caisson wharf polyurea coating underwater explosion damage effect noncontact explosion
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2021.01.026
文献标志码:
A
摘要:
为探究爆炸荷载作用下聚脲涂层对沉箱码头的保护作用,采用LS-DANA非线性动力分析平台,模拟在1 kg TNT当量炸药水中非接触爆炸时,不同涂覆厚度聚脲涂层的沉箱码头毁伤破坏特征。结果表明:无聚脲防护的沉箱码头毁伤破坏程度明显大于涂覆聚脲防护的沉箱码头,沉箱码头的毁伤主要集中在迎爆面外墙和迎爆侧上部管沟,随着聚脲涂层厚度的增加,沉箱码头各部分毁伤程度降低;随着涂覆聚脲厚度的增加,迎爆侧外墙位移逐渐降低,但降幅较小,区域空化效应会加大外墙上部位移;无聚脲防护的沉箱码头迎爆侧外墙位移和毁伤程度明显大于涂覆聚脲防护的沉箱码头,表明聚脲涂层对于沉箱码头具有较好的保护作用。
Abstract:
In order to investigate the protective effect of polyurea coating on the caisson wharf under explosive loading,the damage characteristics of caisson wharf with different thicknesses of polyurea coating during the noncontact explosion of 1kg TNT equivalent explosive in the water were simulated by using the LS-DANA nonlinear dynamic analysis platform.The results showed that the damage degree of caisson wharf without polyurea protection was obviously higher than that of caisson wharf coated with polyurea protection.The damage of caisson wharf was mainly concentrated in the outer wall of explosion surface and the upper pipe trench of explosion side,and with the increase of polyurea coating thickness,the damage degree of each part of caisson wharf decreased.With the increase of polyurea coating thickness,the displacement of the explosionproof side outer wall decreased gradually,but the decreasing amplitude was small,and the regional cavitation effect would enhance the upper displacement of outer wall.The displacement and damage degree of explosion side outer wall of the caisson wharf without polyurea protection were obviously larger than those of the caisson wharf coated with polyurea protection,which indicated that the polyurea coating has a better protective effect on the caisson wharf.

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备注/Memo

备注/Memo:
收稿日期: 2020-11-05;网络首发日期: 2021-01-25
* 基金项目: 国家自然科学基金项目(51404010);安徽省高校自然科学研究重大项目(KJ2017ZD11);安徽省博士后基金项目(2018B282)
作者简介: 张守旸,硕士研究生,主要研究方向为冲击动力学与爆破工程。
通信作者: 宗琦,博士,教授,主要研究方向为岩土工程与爆破工程。
更新日期/Last Update: 2021-02-04