页岩陶粒混凝土梁黏结应力分布试验研究

曾智兵; 刘辉; 曹国辉; 周柏顺; 周超

doi:10.3724/j.gyjzG26010902

页岩陶粒混凝土梁黏结应力分布试验研究

doi: 10.3724/j.gyjzG26010902

曾智兵¹,
刘辉²,
曹国辉^3, ,,
周柏顺³,
周超⁴

1. 益阳市建设工程质量安全监督站, 湖南益阳 413000;
2. 湖南宏信立辉工程技术有限公司, 长沙 410221;
3. 湖南城市学院, 湖南益阳 413000;
4. 中南安全环境技术研究院股份有限公司, 武汉 430064

基金项目:

国家自然科学基金项目（52578198，52278174），湖南省自然科学基金项目（2025JJ90156）。

详细信息

作者简介:
曾智兵，高级工程师，主要从事结构工程方向研究，876742145@qq.com。

通讯作者:
曹国辉，博士，二级教授，cgfcivil@163.com。

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出版历程
- 收稿日期: 2026-01-09
- 网络出版日期: 2026-07-06

Experimental Study on Bond Stress Distribution in Shale Ceramsite Concrete Beams

1. Yiyang City Construction Engineering Quality and Safety Supervision Station, Yiyang 413000, China;
2. Hunan Hongxin Lihui Engineering Technology Co., Ltd., Changsha 410221, China;
3. Hunan City University, Yiyang 413000, China;
4. Zhongnan Safety & Environment Technology Research Institute Co., Ltd., Wuhan 430064, China

摘要

摘要: 为揭示全轻页岩陶粒混凝土与钢筋的黏结性能、破坏模式及黏结应力分布规律，采用30个梁式试件开展试验研究，分析混凝土强度、保护层厚度、钢筋直径、表面形状及锚固长度等因素的影响。结果表明：光圆钢筋试件以同步滑移型拔出破坏为主，低强混凝土或薄保护层试件易发生非同步滑移型拔出-劈裂混合破坏，而中高强混凝土试件则呈劈裂型脆性破坏，荷载-滑移曲线仅表现为上升段；光圆钢筋较同直径带肋钢筋的极限黏结强度明显偏小，对拔出破坏试件随保护层增厚而减小，对劈裂破坏试件则随之增大，且随钢筋直径增大而降低；黏结应力沿锚固长度分布明显不均匀，增大保护层厚度与混凝土强度有利于改善应力分布均匀性，而钢筋直径与锚固长度共同影响黏结应力峰值及其分布形态。
- 页岩陶粒混凝土 /
- 黏结应力分布 /
- 梁式试验 /
- 破坏模式
Abstract: To investigate the bond behavior of reinforcing bars embedded in full lightweight shale ceramsite concrete， thirty beam specimens were tested to examine the effects of concrete strength， cover thickness， bar diameter， surface configuration， and anchorage length. The results indicate that specimens reinforced with plain bars mainly fail by synchronous pull-out， whereas those with low-strength concrete or thin cover tend to exhibit a mixed pull-out-splitting failure， while specimens made with medium- to high-strength concrete predominantly undergo brittle splitting characterized by load-slip curves with only an ascending branch. The ultimate bond strength of plain round steel bars is significantly lower than that of ribbed steel bars of the same diameter.For pull-out failure specimens， it decreases as the concrete cover thickness increases； for splitting failure specimens， it increases with the cover thickness， and decreases with an increase in bar diameter. Bond stress is non-uniformly distributed along the anchorage length， with greater cover thickness and higher concrete strength promoting more uniform stress transfer， while bar diameter and anchorage length significantly influence both the peak bond stress and its distribution pattern.
- shale ceramsite concrete /
- bond stress distribution /
- beam test /
- failure mode

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