中文摘要：

以CFRP层数为参数,对1根对比梁和2根CFRP约束受压区混凝土梁（CFRP约束梁）进行三分点加载试验,观察梁的破坏过程,得到混凝土和CFRP管应变分布、荷载-跨中位移曲线等数据,并对梁的延性性能予以分析。结果表明：采用CFRP对受压区混凝土进行侧向约束对梁的抗弯承载力影响不大,但可以较大地提高梁的延性。CFRP约束混凝土梁的位移延性系数比普通混凝土梁提高90%以上,耗能延性系数比普通混凝土梁提高116%以上。

英文摘要：

A three-point bending test was conducted on one control beam and two reinforced concrete beams with carbon fiber reinforced polymer （CFRP） confined compression zone, and one parameter was considered, ie. CFRP layers. The failure processes and forms of specimens were observed, the strain distribution of concrete and CFRP tubes,load-displacement curves were obtained. And the ductility behavior was analyzed. Results showed that the lateral confinement with CFRP had little influence on the flexural bearing capacity of beams, but ductility of the confined beam was greatly improved. Compared with the conventional reinforced concrete beams, the displacement ductility factor was ductility factor was improved by 116% above. increased by 90% above, and the energy dissipation