| 摘要: |
| 通过拉拔试验研究了竹筋陶粒混凝土的黏结性能，探讨了陶粒混凝土强度等级、竹筋类型、竹筋黏结长度、竹筋边长和竹筋刻痕间距对竹筋陶粒混凝土黏结强度的影响.结果表明：无刻痕竹筋陶粒混凝土的黏结破坏形式主要为拔出破坏，而带刻痕重组材竹筋陶粒混凝土的黏结破坏形式则是肋间混凝土被剪坏；同等条件下，重组材竹筋陶粒混凝土极限黏结强度高于层积材竹筋陶粒混凝土，但低于塑料筋陶粒混凝土；当竹筋刻痕间距为15mm时，带刻痕重组材竹筋陶粒混凝土的极限黏结强度最高.另外，根据试验结果拟合出了重组材竹筋与陶粒混凝土的锚固长度计算公式，该公式可指导工程应用. |
| 关键词: 竹筋 陶粒混凝土 拉拔试验 黏结性能 锚固长度 |
| DOI：10.3969/j.issn.1007 9629.2013.04.007 |
| 分类号: |
| 基金项目:山东省自然科学基金资助项目（ZR2011EEM023）；山东省研究生教育创新计划项目（SDYC11006） |
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| Bond Properties of Ceramic Concrete Reinforced by Bamboo Bar |
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HOU He tao1, CHEN Lu2, SUN Yan fei1, L Zhong long1
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1.School of Civil Engineering, Shandong University, Jinan 250061, China;2.Department of Architecture and Urban Planning, Binzhou University, Binzhou 256600, China
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| Abstract: |
| Bond properties of ceramic concrete reinforced by bamboo bar were investigated based on pull out tests. The influences of strength grade of ceramic concrete, material type, bond length, side length and notch spacing of bamboo bar on the bond strength between the bamboo bars and ceramic concrete were studied. The results show that the bond failure mode of ceramic concrete reinforced by bamboo bar without notch is chiefly pulling out failure, however, the bond failure mode of ceramic concrete reinforced by restructured bamboo(RB) bar with notches is shear failure. The ultimate bond strength of ceramic concrete reinforced by RB bar is higher than that of ceramic concrete reinforced by laminated bamboo(LB) bar, but it is lower than that of ceramic concrete reinforced by plastic bar under the same condition. When the notch spacing is 15mm, the ultimate bond strength of ceramic concrete reinforced by RB bars is the highest. In addition, the computational formula for embedded length for RB bars and ceramic concrete is proposed based on the test data,which can be used in practice. |
| Key words: bamboo bar ceramic concrete pull out test bond property embedded length |
