| 徐金俊,陈宗平*,陈宇良.L、T、十形截面型钢混凝土异形柱滞回性能对比分析[J].实验力学,2015,30(2):221~230 |
| L、T、十形截面型钢混凝土异形柱滞回性能对比分析 |
| Contrastive Analysis of Hysteretic Performance of L-Shaped, T-Shaped and Cross-Shaped SRC Special-Shaped Column |
| 投稿时间：2014-07-22 修订日期：2014-10-04 |
| DOI：10.7520/1001-4888-14-135 |
| 中文关键词: 型钢混凝土异形柱 截面类型 滞回性能 破坏形态 耗能 变形 损伤 |
| 英文关键词:steel reinforced concrete (SRC) special-shaped column cross-section form hysteretic performance failure mode energy-dissipation deformation damage |
| 基金项目:国家自然科学基金项目(50908057，51268004)，“八桂学者”建设工程专项经费资助项目，广西防灾减灾与工程安全重点实验室开放课题项目(2012ZDX10)，广西研究生教育创新计划项目(YCBZ2012005) |
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| 中文摘要: |
| 为了研究截面形状对型钢混凝土(SRC)异形柱滞回性能的影响，完成了4个L形、6个T形和2个+形截面SRC异形柱构件的低周反复荷载实验，并获取了此类构件的破坏形态和滞回曲线。在此基础上，对比分析了截面类型对SRC异形柱在耗能能力、变形性能及地震损伤等方面的影响。研究结果表明：型钢混凝土异形柱的破坏形态与剪跨比有关，剪跨比大的试件易发生弯曲型破坏，而小剪跨比的试件易发生剪切型破坏；L形柱的滞回环捏拢程度最大，其次为T形柱，最后为+形柱；+形柱和L形柱的相对受剪承载能力和耗能能力均比T形柱大；T形柱的变形能力要优于L形柱；型钢混凝土异形柱构件的相对损伤累积程度与柱肢数有关，其主要表现为随着柱肢数的增多，异形柱的损伤发展水平加快。 |
| 英文摘要: |
| In order to understand the effect of cross-section form on hysteretic performance of steel reinforced concrete (SRC) special-shaped column, four L-shaped, six T-shaped and two cross-shaped SRC special-shaped columns were subjected to low cyclic loading test, the failure mode and hysteretic curve of specimen were obtained. Based on experimental results, the effect of cross-section form on energy dissipation capacity, deformation properties and earthquake damage of SRC special-shaped column was contrastively analyzed. Results show that the failure mode of SRC special-shaped column is related to shear-span ratio, that is to say, specimen with larger shear-span ratio is prone to flexural failure, while specimen with smaller shear-span ratio is prone to shear failure. The hysteresis loop pinching degree of L-shaped column is the largest, the second one is T-shaped column, and the third one is cross-shaped column. The relative shear bearing capacity and energy-dissipating capacity of both cross-shaped column and L-shaped column are larger than that of T-shaped column. The deformability of T-shaped column is superior to that of L-shaped column. The relative damage accumulation degree of SRC special-shaped column is related to the column limb number, that is to say, with the increase of column limb number, the damage development of specimen is faster. |
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