部分预制装配型钢混凝土剪力墙抗震性能研究  

Study on seismic behavior of partially precast steel reinforced concrete shear walls

作　　者：于云龙[1,2] 谭斌 薛亦聪 刘亚平 杨勇 YU Yunlong;TAN Bin;XUE Yicong;LIU Yaping;YANG Yong(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Key Laboratory for Structural Engineering and Earthquake Resistance of the Ministry of Education,Xi’an Universityof Architecture and Technology,Xi’an 710055,China;China Qiyuan Engineering Corporation,Xi’an 710018,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,陕西西安710055 [3]中国启源工程设计研究院有限公司,陕西西安710018

出　　处：《建筑结构学报》2025年第4期57-69,共13页Journal of Building Structures

基　　金：国家自然科学基金项目(52478208,52108172);陕西省重点研发计划(2024SF-YBXM-651)。

摘　　要：为改善传统装配式剪力墙接缝连接复杂、现场施工工序繁多等问题,提出由预制空腔墙体、型钢与缩口钢管连接件等组成的部分预制装配型钢混凝土剪力墙。为研究该组合剪力墙的抗震性能,设计了6个试验轴压比为0.35的一字形剪力墙并进行拟静力试验,以施工方式(现浇与装配)、剪跨比与边缘约束构件配钢率为试验参数,研究各剪力墙在往复水平荷载作用下的破坏机理、滞回性能、刚度退化、耗能能力以及变形能力。同时,采用ABAQUS建立有限元模型,进一步研究缩口钢管连接件对该种剪力墙抗震性能的影响。结果表明:大剪跨比(λ=2.0)剪力墙均发生弯曲作用控制的弯剪破坏,小剪跨比(λ=1.0)剪力墙均发生典型的剪切破坏;在不同剪跨比下,预制剪力墙与现浇剪力墙的初始刚度、承载力与变形能力基本相同,说明提出的缩口钢管连接件与施工方式可以有效实现“等同现浇”的性能目标;当型钢配钢率从2%增大到2.33%,大剪跨比剪力墙和小剪跨比剪力墙的累积耗能分别提高了63.3%与61.2%。采用面积加权的等效混凝土强度计算方法,基于现行规范给出了适用于该组合剪力墙的承载力计算公式,计算结果为试验结果的68%~85%,说明提出的计算公式可用于该类剪力墙的承载力预测,且具有充足的安全冗余度。In order to facilitate the issues of complex seam connections and numerous on-site construction process of traditional prefabricated steel reinforced concrete shear walls,a partially precast steel reinforced concrete(PPSRC)shear wall,which consisted of a hollow wall panel,profile steel,and steel throat connections,was proposed in this paper.Six PPSRC shear walls with a test axial compression ratio of 0.35 were designed and tested under cyclic load horizontally to explore the seismic behavior of the composite shear walls.The test parameters included construction methods(i.e.,precast or cast-in-place),shear-to-span ratios,and steel ratios of the boundary elements.The failure patterns,hysteretic behavior,stiffness degradation,energy dissipation capacity,and deformability of the test specimens were investigated.In addition,the effect of the steel throat connection on the seismic behavior of the shear walls was explored using finite element analysis based on ABAQUS.Both test and numerical results indicates that specimens with large shear-to-span ratio(λ=2.0)suffer bending-shear failure,while those with small shear-to-span ratio(λ=1.0)exhibit typical shear failure.The initial stiffness,bearing capacity and deformation capacity of the cast-in-place and precast specimens are comparable under different shear-to-span ratios,indicating that the PPSRC shear walls can meet performance indexes similar to those of the traditional SRC shear walls.As the steel ratio increases from 2%to 2.33%,the energy dissipation of the specimens with large and small shear-to-span ratios is improved by 63.3%and 61.2%,respectively.The calculation formula for load-carrying capacity of PPSRC specimens was calculated using the equations of the current standards based on an area-weighed method to determine the effective concrete strength at the cross-section.The ratios of calculated-to-tested bearing capacities range from 0.68 to 0.85,demonstrating that the proposed calculation formula can be used for predicting the bearing capacity of PPSRC shear

关 键 词：装配式结构 剪力墙 型钢混凝土 拟静力试验 有限元分析 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]