Variation Characteristics of Stress Wave Speed for Anchorage System Under Instantaneous Excitation
Variation Characteristics of Stress Wave Speed for Anchorage System Under Instantaneous Excitation
复制标题
瞬时激励下锚固系统应力波速变化特征
DOI：
10.1007/s10706-015-9846-z
复制
发表时间：
2015-01
期刊：
影响因子：
--
通讯作者：
Chao YANG
中科院分区：
文献类型：
--
作者：
Bing SUN;Sheng ZENG;Shan-shan GUO;Chao YANG
动态无损检测广泛用于评估锚固系统中的螺栓锚固质量。锚固系统在瞬时激励下的固结波速、应力波速是评价所需的参数。然而，由于波速受多种因素的影响，确定波速非常困难。为了解决这一问题，本文试图建立固结波速与锚固介质中波速之间的关系。本文采用动态无损检测方法，通过实验测量固结波速和锚固介质中的波速。固结波速通过将螺栓浇注在钢筋周围一立方体混凝土块（600mm×600mm×2400mm）内而制成的混凝土中的灌浆螺栓来测量，锚固介质中的波速通过混凝土试件来测量。结果表明，固结波速范围从混凝土波速到自由钢筋波速，固结波速与混凝土内波速呈指数规律变化，且相互对称。提出了用锚固介质中的波速计算固结波速的新思路，由于锚固介质中波速的测试十分发达且可靠，只需在标准立方体试件（150mm×150mm×150mm）上进行测试即可确定锚固质量，这使得锚固质量的评价变得更加容易和准确。
Dynamic nondestructive testing is widely used to evaluate the bolt anchorage quality in an anchorage system. The consolidating wave speed, stress wave speed for anchorage system under instantaneous excitation, is a required parameter for the evaluation. However, it is very difficult to determine the wave speed since it is affected by many factors. In order to solve the problem, this paper tries to establish the relationships between consolidation wave speed and wave speed in anchorage medium. This paper used dynamic nondestructive testing for measuring consolidation wave speed and wave speed in anchorage medium through experiment. The consolidation wave speed is measured by the grouted bolts in concrete fabricated by casting the bolts within one cubic concrete block with the dimensions of (600 mm × 600 mm × 2400 mm) around steel bars, and the wave speed in anchorage medium is measured by concrete specimens. The results indicate that the consolidation wave speed ranges from wave speed in concrete to that in free steel bar, the consolidation wave speed and wave speed in concrete vary in exponential law, and that they are mutually symmetric. This proposes the new idea that wave speed in anchorage medium can be used to calculate consolidation wave speed, and this can make the evaluation of anchorage quality much easier and more accurate because the testing of wave speed in anchorage medium is well developed and reliable and it can be determined by only testing on standard cubic specimens (150 mm × 150 mm × 150 mm).
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DOI：
10.1016/j.ijrmms.2006.12.002
发表时间：
2007-09
影响因子：
7.2
作者：
D. Zou;Y. Cui;V. Madenga;Chuanda Zhang
通讯作者：
D. Zou;Y. Cui;V. Madenga;Chuanda Zhang
影响因子：
1.5
作者：
Shi-Ping Zhang;Changsuo Zhang;C. Wang;Steve Zou
通讯作者：
Shi-Ping Zhang;Changsuo Zhang;C. Wang;Steve Zou
DOI：
10.1016/j.ijrmms.2005.09.006
发表时间：
2006-06
影响因子：
7.2
作者：
Chuanda Zhang;D. Zou;V. Madenga
通讯作者：
Chuanda Zhang;D. Zou;V. Madenga
DOI：
--
发表时间：
2007
期刊：
Journal of China Coal Society
影响因子：
--
作者：
Li Yi
通讯作者：
Li Yi
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
M. Beard
通讯作者：
M. Beard