EXPERIMENTAL INVESTIGATION ON BOND PERFORMANCE BETWEEN REINFORCEMENT AND CONCRETE AFTER FIRE
-
摘要: 为了提高建筑物火灾后加固设计的可靠性,探究高温后钢筋混凝土的粘结性能成为过火后钢筋混凝土性能研究的关键。通过中心拔出试验,研究了经历不同温度后钢筋和混凝土粘结性能的变化情况,得到不同温度下的-s曲线,并给出温度因素影响下的粘结应力-滑移本构方程。Abstract: In order to raise the reliability of the strengthening design of a building after a fire,the exploration of the bond performance of a reinforce concrete after a fire becomes the key to the study on the behavior of the reinforced concrete after a fire.It is studies the changes in the bond performance between rebar and concrete under different temperatures by way of a central pull-out test.The rebar and the concrete cementing force's -s curves under different temperatures are obtained and the bond-slip constitutive equation under temperature influence is also given.
-
Key words:
- after high temperature /
- reinforced concrete /
- bonding force /
- τ-s curve /
- constitutional equation
-
GB 5015292混凝土结构试验方法标准[S]. [2] Pietro G Gambarova,Cengiz KaraKo. Shear-ConfinementInteractionattheBar-to-Concrete Interface[M]. Milan: Politecnicodi Milano,1982. [3] E Giuriani. Experimental Investigation on the Bond-Slip law of Deformed Bars in Concrete[R]. Iabse Colioquium Delft 81 on Advanced Mechanics of Rein forced Concrete,FinalReport,1981,6:121-142. [4] R. Tepfers. Cracking of ConcreteCoverAlong Anchored DeformedRein forcing Bars[J]. Magazine of Concrete Research,1979,31(106):3-12. [5] 过镇海.高温下钢筋混凝土受力性能的试验研究[J].土木工程学报,2000,33(6):7-8. [6] 徐泽晶.火灾后钢筋混凝土结构的材料特性?寿命预估和加固研究[D].大连:大连理工大学,2006. [7] 过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003. -

计量
- 文章访问数: 107
- HTML全文浏览量: 14
- PDF下载量: 46
- 被引次数: 0