预制空腔叠合型钢混凝土剪力墙抗震性能试验研究与有限元分析
郭明 , 李喆 , 张明俊 , 朱利捷 , 于云龙 , 薛亦聪
建筑钢结构进展 ›› 2026, Vol. 28 ›› Issue (7) : 13 -26.
预制空腔叠合型钢混凝土剪力墙抗震性能试验研究与有限元分析
Experimental Study and Finite Element Analysis on the Seismic Performance of Precast Cavity Composite Steel Reinforced Concrete Shear Walls
针对传统型钢混凝土剪力墙边缘构件型钢连接难度大、现场施工工序复杂等问题,文中提出了一种预制空腔叠合型钢混凝土(precast cavity composite steel reinforced concrete, PCSRC)剪力墙,该剪力墙由预制和现浇两部分组成;预制部件包括空腔墙体、型钢与方钢管,其中预制空腔墙体由钢筋笼、缩口钢管及混凝土构成。为研究PCSRC剪力墙的抗震性能,设计了2个剪跨比分别为2.0(大剪跨比)和1.0(小剪跨比)的剪力墙试件,两个试件的试验轴压比均为0.35;通过开展拟静力试验,研究了各试件的破坏模式、滞回曲线、骨架曲线、变形能力、刚度退化规律及耗能能力。采用了ABAQUS建立了PCSRC剪力墙的有限元分析模型,有限元模拟结果与试验结果吻合良好,验证了该模型的有效性;在此基础上,进一步拓展分析了轴压比、预制和现浇混凝土强度对墙体抗震性能的影响。结果表明:两个试件均具有良好的整体性能;大剪跨比试件的破坏形态以弯曲破坏为主,小剪跨比试件的破坏形态以剪切破坏为主;相较于小剪跨比试件,大剪跨比试件的滞回性能更优、刚度退化速率更平缓、变形能力与耗能能力更佳,原因在于弯曲破坏模式下塑性铰区形成更早、塑性发展更充分。综上,PCSRC剪力墙可简化型钢连接构造与现场施工流程,同时具备良好的抗震性能。
To address the challenges of connecting steel sections in boundary elements and the complex on-site construction procedures in conventional steel reinforced concrete shear walls, a precast cavity composite steel reinforced concrete (PCSRC) shear wall was proposed. This wall consists of precast and cast-in-place components. The precast components include cavity walls, steel sections, and square steel tubes, with the cavity walls comprising a rebar cage, necked steel tubes, and concrete. To investigate the seismic performance of PCSRC shear walls, two specimens with shear span-to-depth ratios of 2.0 (large shear-span ratio) and 1.0 (small shear-span ratio) were designed, both with an axial compression ratio of 0.35. Quasi-static tests were conducted to analyze the failure modes, hysteresis behavior, skeleton curves, deformation capacity, stiffness degradation, and energy dissipation capacity. Furthermore, a finite element model of the PCSRC shear wall was developed using ABAQUS, and its validity was verified by comparing simulation results with experimental results. Subsequently, the influence of axial load ratio, and the strength of precast and cast-in-place concrete on its seismic performance were further analyzed. Both experimental and numerical results indicate that the specimens exhibit excellent overall performance. The failure mode of the specimen with a large shear-span ratio is predominantly governed by flexural failure, whereas that of the specimen with a small shear-span ratio is mainly dominated by shear failure. Compared with the specimen with a small shear-span ratio, the specimen with a large shear-span ratio exhibits better hysteretic behavior, slower stiffness degradation, enhanced deformation capacity, and better energy dissipation capacity. This can be attributed to the earlier formation and more extensive development of plastic hinge zones in the flexural failure mode compared to the shear failure mode. In summary, PCSRC shear walls can simplify steel connection and on-site construction procedures while exhibiting excellent seismic performance.
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国家自然科学基金(52478208)
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