低轴压比半装配式单排配筋再生混凝土剪力墙抗震性能试验研究

发布时间：2018-05-09 02:01

本文选题：半装配式结构 + 单排配筋剪力墙　；参考：《建筑结构学报》2017年06期

【摘要】：半装配式单排配筋混凝土剪力墙是由带预留孔的上层预制剪力墙、带墩头钢筋的下层预制剪力墙、上下墙体间坐浆层、纵横墙交接处的现浇暗柱等组成。下层预制剪力墙顶部的单排竖向墩头钢筋伸入上层预制墙体底部的预留孔中,采用灌浆锚固的方法连接。通过4个低轴压比、不同剪跨比的工字形单排配筋再生混凝土剪力墙试件(包括2个半装配式、2个现浇式剪力墙试件)的低周反复荷载试验研究,分析了各试件的承载力、刚度、延性、滞回特性等,研究其损伤演化过程和破坏机制。结果表明:剪跨比1.0时,剪力墙呈剪切破坏,试件的承载力较高,剪跨比1.5时,剪力墙发生以弯曲破坏为主的弯剪破坏,承载力较低,但延性较好;在设计轴压比0.15下,半装配式单排配筋剪力墙的综合抗震性能与现浇剪力墙接近,可用于低、多层建筑结构中。
[Abstract]:The semi-assembled single-row reinforced concrete shear wall is composed of the upper prefabricated shear wall with reserved holes, the lower prefabricated shear wall with the reinforcement at the end of the pier, the slurry layer between the upper and lower walls, and the cast-in-place column at the junction of the vertical and horizontal wall. The single row of vertical piers at the top of the prefabricated shear wall at the bottom of the lower layer is inserted into the reservation hole at the bottom of the upper precast wall, and the grouting Anchorage method is used to connect the steel bar. In this paper, the low cycle repeated load tests of four I-shaped single row reinforced recycled concrete shear wall specimens with low axial compression ratio and different shear span ratios (including 2 semi-assembled and 2 cast-in-situ shear wall specimens) are studied, and the bearing capacity of each specimen is analyzed. Stiffness, ductility, hysteretic characteristics and so on, the damage evolution process and failure mechanism are studied. The results show that when the shear span ratio is 1.0, the shear wall shows shear failure, the bearing capacity of the specimen is higher, and when the shear span ratio is 1.5, the flexural shear failure of the shear wall is low, but the ductility is better, when the shear span ratio is 1.5, the bearing capacity is lower, but the ductility is better, and when the shear span ratio is 1.5, the shear wall has a good ductility. The comprehensive seismic performance of semi-assembled single-row reinforced shear wall is close to that of cast-in-place shear wall and can be used in low and multi-story buildings.
【作者单位】：北京工业大学城市与工程安全减灾教育部重点实验室;北京工业大学北京城市交通协同创新中心;
【基金】：国家重点研发计划子项目(2016YFC0701902)
【分类号】：TU352.11;TU398.2

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