[1]刘立新,赵镇,张龑,等.带扩大套头钢筋机械锚固性能的试验研究[J].郑州大学学报(工学版),2008,29(03):103-107.[doi:10.3969/j.issn.1671-6833.2008.03.027]
 LIU Lixin,Zhao Zhen,ZHANG Gong,et al.Experimental study on mechanical anchoring performance of steel bars with enlarged sleeves[J].Journal of Zhengzhou University (Engineering Science),2008,29(03):103-107.[doi:10.3969/j.issn.1671-6833.2008.03.027]
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带扩大套头钢筋机械锚固性能的试验研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
29
期数:
2008年03期
页码:
103-107
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Experimental study on mechanical anchoring performance of steel bars with enlarged sleeves
作者:
刘立新赵镇张龑等.
郑州大学,土木工程学院,河南,郑州,450001, 郑州大学,土木工程学院,河南,郑州,450001, 郑州大学,土木工程学院,河南,郑州,450001, 郑州大学,土木工程学院,河南,郑州,450001
Author(s):
LIU Lixin; Zhao Zhen; ZHANG Gong; etc
关键词:
带扩大套头钢筋 机械锚固 锚固强度 试验研究
Keywords:
DOI:
10.3969/j.issn.1671-6833.2008.03.027
文献标志码:
A
摘要:
进行了36个采用扩大套头锚固形式的热轧带肋钢筋与混凝土粘结试件的拔出试验,其主要参数为混凝土强度、钢筋直径、锚固长度、保护层厚度、横向配筋率及扩大套头尺寸等.对采用这种机械锚固方式的带肋钢筋与混凝土的粘结锚固强度、破坏形态以及影响粘结锚固性能的主要因素进行了较为系统的分析.试验研究结果表明,采用此种锚固方式能使带肋钢筋与混凝土的极限粘结锚固强度显著提高,减小粘结滑移量,可有效地减小锚固长度.最后,在统计回归的基础上给出带扩大套头钢筋的粘结强度的计算公式,为我国混凝土结构设计规范进一步修订时列入机械锚固方式提供了参考依据.
Abstract:
The extraction test of 36 hot-rolled ribbed steel bars and concrete bonding specimens using the anchoring form of enlarged sleeve was carried out, and the main parameters were concrete strength, steel bar diameter, anchoring length, protective layer thickness, transverse reinforcement ratio and enlarged sleeve size. The bonding anchorage strength, failure form and main factors affecting the bonding and anchoring performance of ribbed steel bars and concrete using this mechanical anchoring method are systematically analyzed. The experimental results show that this anchoring method can significantly improve the ultimate bonding anchoring strength of ribbed steel bar and concrete, reduce the amount of bonding slip, and effectively reduce the anchorage length. Finally, on the basis of statistical regression, the calculation formula of the bonding strength of the steel bar with enlarged sleeve is given, which provides a reference for the inclusion of mechanical anchoring method in the further revision of the design code of concrete structure in China.

更新日期/Last Update: 1900-01-01