Comparative test study of blast-resistance performance of optimal composite anchorage structure and single anchorage structure

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

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Comparative test study of blast-resistance performance of optimal composite anchorage structure and single anchorage structure

更新时间：2026-06-25

- Comparative test study of blast-resistance performance of optimal composite anchorage structure and single anchorage structure
- Vol. 32, Issue 10, (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,471023
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU942
- Online First：13 October 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
ZHAO Lin, ZENG Xian-ming, LI Shi-min, et al. Comparative test study of blast-resistance performance of optimal composite anchorage structure and single anchorage structure[J]. 2011, 32(10).
DOI：

ZHAO Lin, ZENG Xian-ming, LI Shi-min, et al. Comparative test study of blast-resistance performance of optimal composite anchorage structure and single anchorage structure[J]. 2011, 32(10). DOI：

摘要

优化复合锚固结构是由土钉和在土钉端部系统而规律地设置的一定长度的经特殊处理的空孔段群组成。空孔群在围岩介质中造成一个弱化区，弱化区介于支护结构与围岩介质之间，将原有的二介质系统（支护结构和围岩），改变为三介质系统（支护结构、弱化区和围岩）。爆炸条件下，优先由弱化区产生变形、破碎、压实或压密，同时大量吸收爆炸能，使支护结构的危机得以转移至弱化区而本身不受损。优化复合锚固结构对比单一锚固结构具有优异的抗动静载性能。因此进行对比试验，研究优化复合锚固结构及单一锚固结构的抗爆性能。试验结果表明，在支护结构产生临界破坏前后，单一锚固结构的质点加速度量值是优化复合锚固结构的2.22倍以上，前者的动应变量值是后者的5.30～4.50倍以上。在临界破坏条件下，优化复合锚固结构的抗力是单一锚固结构的5.10倍以上，在极限破坏状条件下，前者是后者的4.13～3.40倍以上。

Abstract

The optimal composite anchorage structure is constituted by soil nail and groups of fixed-length empty holes that regular setting in the end of soil nail. Empty holes caused a weakened zone in the surrounding rock. The weakened zone is between the reinforced support structure and the surround rock. It changes the original two-medium system into three-medium system. Under the explosion condition

weakened zone is firstly deformed

cracked

crushed or densified; and at the same time

a great deal of blast energy is absorbed. Therefore

the crisis of the reinforced support structure is transferred into the weakened zone. The optimal composite anchorage structure has excellent blast-resistance. The test results of the compression test of optimal composite anchorage structure and single anchorage structure show that the particle acceleration of single anchorage structure is 2.22 times higher than that of the optimal composite anchorage structure. The dynamic strain of the former is 5.30-4.50 times higher than that of the latter. The blast-resistance of the optimal composite anchorage structure is 5.10 times higher than that of the single anchorage structure. Under the limit damage condition

the former is 4.13-3.40 times higher than that of the latter

关键词

Keywords

references

Views

1836

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

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

Experimental research on consolidation of deep soft foundations

Strength development model for slurry-like mud treated by physicochemical combined method considering preloading stress

Hydraulic scouring resistance characteristics of geosynthetics reinforced slopes

Physical-mechanical properties and durability analysis of foamed lightweight soil based on excavated soil and fly ash

Related Author

ZHAO Lin

ZENG Xian-ming

LI Shi-min

LIN Da-lu

LU Wei-guo

YANG Jian-min

Related Institution

School of Civil Engineering, Hunan City University

AI问答

⁰