[1]李 楠,赵均海,吴 赛,等.钢纤维高强混凝土墙基于CONWEP 的爆炸响应[J].西安建筑科技大学学报:自然科学版,2014,46(06):833-838,855.[doi:10.15986/j.1006-7930.2014.06.012]
　LI Nan,ZHAO Junhai,WU Sai,et al.Blast response of steel fiber reinforced high strength concrete walls based on CONWEP[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(06):833-838,855.[doi:10.15986/j.1006-7930.2014.06.012]
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钢纤维高强混凝土墙基于CONWEP 的爆炸响应()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年06期
页码:
833-838,855
栏目:
出版日期:
2014-12-31

文章信息/Info

Title:
Blast response of steel fiber reinforced high strength concrete walls based on CONWEP
文章编号:
1006-7930(2014)06-0833-06
作者:
李 楠1; 赵均海1; 吴 赛1; 王 娟1; 施明君2
(1. 长安大学建筑工程学院,陕西 西安 710061; 2. 西安建工站改项目建设有限公司,陕西 西安 710004)
Author(s):
LI Nan1;  ZHAO Junhai1;  WU Sai1;  WANG Juan1;  SHI Mingjun2
(1. School of Civil Engineering, Chang’an University, Xi’an 710061, China; (2. Station Renovation Project Construction co., LTD. of Xi’an Construction Group, Xi’an 710004, China)
关键词:
钢纤维高强混凝土(SFRHSC); J-H-C 模型; 数值分析; 动力响应; 破坏模式
Keywords:
steel fiber reinforced high strength concrete(SFRHSC);  J-H-C model;  numerical simulation;  dynamic response;  failure mode
分类号:
TU377.9
DOI:
10.15986/j.1006-7930.2014.06.012
文献标志码:
A
摘要:
针对爆炸荷载下的钢纤维高强混凝土墙,采用显式动力有限元分析软件ANSYS/LS-DYNA 建立了墙体1/4 模型,对墙体在爆炸荷载下的动力响应和破坏形态进行模拟分析.材料模型采用J-H-C 模型,该模型考虑了损伤和应变率效应,模型参数利用文献试验数据计算得出,爆炸荷载采用CONWEP 爆炸模型,使用*LOAD_BLAST 关键字加载.利用数值模型分析了不同折合距离下墙体的破坏模式以及墙体厚度、高跨比、边界条件和折合距离等墙体动力响应的影响因素,结果表明,折合距离较小时墙体发生剪切破坏,折合距离较大时墙体发生弯曲破坏,此外,墙体厚度、边界条件、高跨比和折合距离均对其动力响应产生明显的影响,与钢筋混凝土墙体对比分析发现同等条件下钢纤维高强混凝土墙体中心位移值较小,体现了钢纤维高强混凝土较高的抗拉强度和抗压韧性对其抗爆能力的显著增强作用.
Abstract:
The dynamic response and failure pattern of the SFRHSC wall under explosion load was simulated and was analyzed by using explicit dynamic finite element analysis software ANSYS/LS-DYNA. The 1/4 wall model is established, and the J-H-C model was used as material model which considered damage and strain rate effect. Model parameters were calculated by using the test of literature data, explosion loaded by CONWEP explosion model by using *LOAD_BLAST keyword. Different failure modes under different scaled distance were analyzed and factors like thickness of the wall, depth-span ratio, boundary conditions and scaled distance were considered. The results showed that when the scaled distance was small, shear failure occurred, or when the scaled distance was large, bending failure happens. In addition, thickness of the wall, boundary conditions, depth-span ratio and scaled distance have obvious influence on the dynamic response of SFRHSC walls, and compared with reinforced concrete wall, the displacement in the center of the SFRHSC wall is much smaller under the same condition, which shows the high tensile strength and compressive toughness of SFRHSC wall is significantly enhanced the anti-explosion ability of the wall. The research results of this article can provide certain reference to the design of fender wall.

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备注/Memo

备注/Memo:
收稿日期:2014-05-29   修改稿日期:2014-12-04
基金项目:国家自然科学基金项目(41202191);高等学校博士学科点专项科研基金项目(20110205130001);陕西省自然科学基金资助项目(2011JM7002); 长安大学中央高校基本科研业务费专项资金资助项目(2013G2283007)
作者简介:李楠(1987-),女,博士研究生,主要研究结构工程抗爆设计理论.E-mail:13488358907@163.com
更新日期/Last Update: 2015-09-01