张锡治 ,李福林,李雅楠 ,李星乾 ,章少华 ,于志双
AuthorsHTML:张锡治 ¹ ，李福林 ² ，李雅楠 ¹ ，李星乾 ² ，章少华 ¹ ，于志双 ³
AuthorsListE:Zhang Xizhi ,Li Fulin,Li Yanan ,Li Xingqian,Zhang Shaohua,Yu Zhishuang
AuthorsHTMLE:Zhang Xizhi ¹，Li Fulin ²，Li Yanan ¹，Li Xingqian ²，Zhang Shaohua ¹，Yu Zhishuang ³
Unit:1. 天津大学建筑设计规划研究总院有限公司，天津 300072；
2. 天津大学建筑工程学院，天津 300072；
3. 中铁建大桥工程局集团建筑装配科技有限公司，天津 300300

Unit_EngLish:1. Tianjin University Research Institute of Architectural Design and Urban Planning Co.，Ltd.，Tianjin 300072，China；
2. School of Civil Engineering，Tianjin University，Tianjin 300072，China；
3. China Railway Construction Bridge Engineering Bureau Group Construction Assembly Technology Co.， Ltd.，Tianjin 300300，China

Abstract_Chinese:为研究钢筋截面面积和 H 型钢抗剪键对试件抗剪性能的影响，设计制作了 3 片剪跨比为 0.87 的足尺寸装 配式低矮剪力墙试件．主要研究了在竖向轴压力保持不变的状态下，3 片剪力墙试件通过单调推覆荷载作用的破坏 过程和最终破坏形态、各阶段荷载特征值、荷载-位移曲线，对比分析了新、旧混凝土结合面处普通凿毛、增加钢筋 截面面积、增设 H 型钢抗剪键 3 种不同的构造处理方式对试件抗剪性能的影响．得出主要结论如下：3 片试件的破 坏过程及最终破坏形态较为接近，均是剪力墙试件右侧暗柱根部钢筋受拉屈服甚至拉断，左侧暗柱根部混凝土压溃 脱落，结合面处开展的水平裂缝为主裂缝；3 片剪力墙试件在复合齿槽处的 U 型钢筋搭接连接均能有效地传递应 力，且增加结合面处钢筋截面面积以及增设 H 型钢抗剪键均能有效地提高试件的抗剪承载力，试件 YZW-1、YZW- 2、YZW-3 的峰值承载力分别为 773.4 kN、950.3 kN、925.3 kN，增加钢筋截面面积的试件 YZW-2 极限承载力提高 了 22.9%，增设 H 型钢的试件 YZW-3 极限承载力提高了 19.7%．通过对比 3 片试件的荷载-位移曲线可以看出，试 件 YZW-2 相较于试件 YZW-1，刚度提高很多，抗侧移能力较强，且在实际施工过程中便于操作；而增设了 H 型钢 的试件 YZW-3，与试件 YZW-1 相比，刚度大致相同，后期表现为具有更强的极限变形能力．
Abstract_English:To study the influence of the cross-sectional area of reinforcement and H-beam shear key on the shear performance of concrete walls, three full-scale prefabricated low-shear wall specimens with a shear span ratio of 0.87 were designed and manufactured. This paper mainly studies the failure process and ultimate failure mode, load characteristic value and load displacement curve of three shear wall specimens under monotonic push load under the condition that the vertical axial pressure remains unchanged. The effects of three different structural treatments on the shear performance of the specimens were compared and analyzed, which were common roughening at the interface of the new and old concrete, increasing the cross-sectional area of the steel bar and adding the H-shaped steel shear key. It is observed that the three specimens exhibit similar failure processes and final failure modes: ① the tensile yield or the even break of the reinforcement at the root of the concealed column on the right side of the shear wall specimen,② the collapse and fall of the concrete at the root of the concealed column on the left side, and ③ the horizontal cracks at the joint surface, which are the main cracks. Results show that the U-shaped steel bar lap joint of the three shear wall specimens at the composite alveolar can effectively transfer the stress. Moreover, increasing the cross\u0002sectional area of the steel bar at the joint surface and adding the H-shaped steel shear key can improve the shear bearing capacity of the specimens with a peak bearing capacity of 773.4 kN, 950.3 kN and 925.3 kN for YZW-1, YZW-2, and YZW-3, respectively. The ultimate bearing capacity of YZW-2 increases by 22.9% when the cross\u0002sectional area of reinforcement is increased, while the ultimate bearing capacity of YZW-3 with H-beam is increased by 19.7%. Comparison results of the load-displacement curves of the three specimens reveal that YZW-2 exhibits a higher stiffness and stronger lateral displacement resistance compared to those of YZW-1, and is easy to operate in the actual construction process. Compared with YZW-1, YZW-3 with an added H-beam has the same stiffness but stronger ultimate deformation capacity in the later stage.
Keyword_Chinese:装配式剪力墙；复合齿槽；H 型钢；单调加载；抗剪性能
Keywords_English:prefabricated shear wall；composite alveolar；H-beam；monotonic loading；shear performance

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