钢筋与砌块砂浆黏结锚固可靠性分析  

Reliability analysis of adhesive anchorage between the steel and mortar block

作　　者：段凤敏[1] 胡岩[2] 郭杰 

机构地区：[1]沈阳市建设工程质量检测中心,辽宁沈阳110000 [2]沈阳建筑大学,辽宁沈阳110000 [3]辽宁天宝佳华混凝土有限公司,辽宁沈阳110000

出　　处：《中国包装科技博览（混凝土技术）》2011年第6期15-18,共4页China Science and Technology Review

摘　　要：分析了拉拔试验结果考虑砂浆的劈拉强度和相对锚固长度的影响，利用最小二乘法统计回归，得出光圆钢筋的特征强度值的回归公式，并在拉拔试验的结果基础上根据黏结锚固的极限状态方程和可靠性指标进行可靠性分析，验证了GB50003—2001《砌体结构设计规范》中关于配筋砌块砌体结构灰缝中钢筋锚固长度规定的安全眭。最后，提出了钢筋在砌块专用砂浆中锚固长度的设计建议，为配筋砌块砌体灰缝中钢筋的锚固长度的确定提供了进一步的可靠依据。The influence of splitting tensile strength of mortar and relative anchorage length was considered. The regression equation of characteristic strength values of round steel bars was obtained using least squares statistical regression. On the base of results of pull-out test, reliability analysis was conducted according to the limit state equation of bonding anchorage and reliability index, confirming the steel bar anchorage length in grouted joint of reinforced block brickwork structure in the GBSO003 - 2001 ＂Code for design of masonry structure＂ . The design suggestion of anchorage length of steel bar applied in the special block mortar was proposed, providing a reference for the determination of the steel bar anchorage length in grouted joint of reinforced block brickwork structure.

关 键 词：砌块专用砂浆 黏结锚固强度 锚固长度 可靠性指标 

分 类 号：TU365[建筑科学—结构工程]