Comparative test study of blast-resistance performance of optimal composite anchorage structures and non-optimal composite anchorage structures

ZHAO Lin; ZENG Xian-ming; LI Shi-min; LIN Da-lu; LU Wei-guo

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Comparative test study of blast-resistance performance of optimal composite anchorage structures and non-optimal composite anchorage structures

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- Comparative test study of blast-resistance performance of optimal composite anchorage structures and non-optimal composite anchorage structures
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  1. 湖南大学土木工程学院,长沙,410082
  2. 河南科技大学建筑工程学院,河南,洛阳,471004
  3. 总参工程兵科研三所,河南,洛阳,47102
- 作者简介：
- 基金信息：
- DOI：
  CLC： U455.7+2
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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ZHAO Lin, ZENG Xian-ming, LI Shi-min, et al. Comparative test study of blast-resistance performance of optimal composite anchorage structures and non-optimal composite anchorage structures[J]. 2011, 32(S2).
DOI：

ZHAO Lin, ZENG Xian-ming, LI Shi-min, et al. Comparative test study of blast-resistance performance of optimal composite anchorage structures and non-optimal composite anchorage structures[J]. 2011, 32(S2). DOI：

摘要

优化复合锚固结构与非优化复合锚固结构均由土钉和在土钉端部设置的一定长度的经特殊处理的空孔段群即弱化孔群组成，二者的惟一差异是弱化孔长度不同，前者是优化的，后者是据经验确定的。为比较二者的抗爆性能，进行了对比试验研究。试验结果表明，非优化复合锚固结构的拱顶动应变峰值是优化复合锚固结构的2.1倍以上，非优化复合锚固结构的质点加速度峰值是优化复合锚固结构的2倍（拱顶）～5倍（底板），并与宏观结果相吻合，优化复合锚固结构的临界破坏抗力是非优化者的2.1倍以上，极限破坏条件下，拱顶下凸大变形尺度和面层脱落范围，优化复合锚固结构仅为非优化复合锚固结构的25%和33%。

Abstract

The optimal composite anchorage structures and non-optimal composite anchorage structures were constituted by soil nail and groups of fixed-length empty holes that regular setting in the end of soil nail. The only difference between that two kinds of structures is differ in length; the former is optimal and the latter is empirical. The comparative test results show that the dynamic strain of the non-optimal composite anchorage structure is 2.1 times higher than that of the optimal composite anchorage structure. The particle acceleration of the non-optimal composite anchorage structure is 2(in vault) - 5(in floor) times higher than that of the optimal composite anchorage structure. The macroscopic results show that the blast-resistance of the optimal composite anchorage structure is 2.1 times higher than that of the non-optimal anchorage structure. Under the limit damage condition

the distortion about vault of the optimal composite anchorage structure is 25 percent of the non-optimal anchorage structure; and the fallen area about structure surface of the optimal composite anchorage structure is 33 percent of the non-optimal anchorage structure

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