| 引用本文: |
陈 昊, 卢 浩, 孙善政, 熊自明, 王德荣, 岳松林.爆炸作用下浅埋拱结构轴向荷载分布[J].陆军工程大学,2023,(5):52-59
[点击复制] |
|
| |
|
|
| 本文已被：浏览 33次 下载 42次 |
| 爆炸作用下浅埋拱结构轴向荷载分布 |
| 陈昊,卢浩,孙善政,熊自明,王德荣,岳松林 |
| (陆军工程大学 国防工程学院，江苏 南京 210007) |
| 摘要:为探究土中浅埋直墙拱结构轴向荷载分布规律，利用LS-DYNA软件模拟了在不同爆炸距离和装药量条件下结构的轴向荷载分布情况。对比不同装药质量及不同爆炸距离作用下轴向荷载的分布形态发现，对于发生整体响应的结构，其轴向荷载分布形态仅受爆炸距离控制，并可用正态分布函数描述。基于对爆炸距离与荷载分布形态的函数关系拟合，得出了爆炸作用下拱结构轴向荷载分布形态的计算方法。基于正态分布置信区间理论，计算不同置信区间的结构响应，提出了一种确定拱结构轴向荷载计算范围的方法。 |
| 关键词: 土中爆炸 浅埋结构 直墙拱结构 荷载分布 |
| DOI：10.12018/j.issn.2097-0730.20220902001 |
| 投稿时间：2022-09-02 |
| 基金项目:国家自然科学基金（51808552） |
|
| Axial Load Distribution of Shallowly-Buried Arch Structure Under Blast Loading |
| CHEN Hao, LU Hao, SUN Shanzheng, XIONG Ziming, WANG Derong, YUE Songlin |
| (College of National Defense Engineering，Army Engineering University of PLA，Nanjing 210007，China) |
| Abstract: In order to explore the law of axial load distribution of the shallowly-buried straight-wall-round-arch structure in soil, the axial load distributions of the structure under different charge masses with different explosion distances were simulated by LS-DYNA. By comparing the distributions of axial load under different charge masses with different explosion distances, it is found that the axial load distribution of the structure with overall response is only affected by the explosion distance, and the load distribution can be described by the normal distribution function. Based on the fitting of the functional relationship between the explosion distance and the load distribution pattern, the calculation method of the axial load distribution pattern of the arch structure under explosion is obtained. A method for determining the calculation range of axial load of arch structure with the theory of normal distribution confidence interval is proposed by numerical simulation of structural response under different confidence intervals. |
| Key words: explosion in soil shallowly-buried structure straight-wall-round-arch structure load distribution |
|
|
|
|
