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结合钢筋混凝土结构和钢结构的优势，设计一种型钢-螺栓-后浇混凝土装配式剪力墙型钢混合连接。基于ABAQUS有限元软件建立混合连接的剪力墙模型，探究低周往复荷载作用下该混合连接预制剪力墙的受力性能，主要分析模型的破坏形态、受力机制、变形曲线、特征承载力等，并扩展分析了材料强度、轴压比、连接件数量、型钢截面高度等参数对模型受力性能影响。结果表明：装配式剪力墙破坏形态为压弯破坏，破坏时钢连接件仍保持完整，符合“强连接，弱墙肢”的基本设计理念；装配式剪力墙具有较好的承载力、延性和刚度；轴压比对结构承载力影响显著，型钢混合连接间距的增大能有效提升剪力墙延性。建立了型钢混合连接抗剪需求承载力计算模型和公式，并与国内外规范计算值对比分析，公式计算值和BS EN 1992欧洲规范计算值分别与模拟值的误差在15%和20%以内，均可用于型钢混合连接剪力墙竖缝受剪承载力设计参考。

大空心率中空夹层钢管混凝土构件的抗撞击性能有其自身特点，利用有限元软件ABAQUS建立考虑初始几何缺陷的中空夹层钢管混凝土构件的侧向撞击模型，对比了不同初始几何缺陷组合下空心率范围为0.2~0.9构件的抗撞击性能；在此基础上讨论了初始几何缺陷对空心率为0.8构件撞击响应的影响，并对影响大空心率构件撞击响应的主要参数进行分析；最后基于参数分析结果和静态荷载作用下的荷载-局部压痕关系，给出大空心率中空夹层钢管混凝土构件在侧向撞击荷载作用下撞击力-局部变形简化预测公式。结果表明：与无几何缺陷构件相比，考虑初始几何缺陷时构件的撞击力平台值降低，局部变形增大，当空心率达到0.8时，几何缺陷的不利影响最显著，构件的撞击力平台值下降10.6%，跨中局部变形增大20.4%。提高名义含钢率和减小内钢管径厚比可有效减小初始几何缺陷对该类构件抗撞击性能的不利影响，而改变材料强度对该类构件抗撞性能影响相对较小。给出的简化计算公式可以较好地预测有无初始几何缺陷的大空心率构件在侧向撞击荷载下的撞击力-局部变形曲线。

为适应现代结构不断向高耸、重载、大跨等方向发展的趋势,将内置型钢钢管混凝土应用于柱结构设计中。采用ABAQUS有限元软件建立内置型钢圆钢管混凝土轴压短柱受力全过程分析的数值模型,对已有的内置型钢钢管混凝土轴压构件承载力的试验数据进行计算和验证。分析了该类构件在轴压作用下的应力-应变全过程曲线、截面应力分布及各部件之间的相互作用力;探究了材料强度、型钢含钢率、钢管含钢率及型钢截面形式等主要参数对内置型钢钢管混凝土组合柱强度指标的影响规律。研究结果表明:内置型钢对核心混凝土形成了双重约束作用,使核心混凝土的强度有所提高;型钢、混凝土和钢管之间的协同工作有效提高了柱的承载力及延性;型钢含钢率和型钢截面形式对应变变化影响较小。最后,提出了适用于内置型钢圆钢管混凝土短柱轴压承载力的简化计算公式,公式计算结果与试验结果吻合较好。

为了研究大空心率的圆锥形中空夹层钢管混凝土纯弯构件的受力性能,对已有的试验数据进行数值模拟,采用经验证的建模方法建立了圆锥形中空夹层钢管混凝土纯弯构件力学模型。分析了典型构件受力全过程的弯矩-挠度关系曲线、荷载分配、破坏模态等力学行为;并研究了锥度、空心率和剪跨比对构件变形曲线的影响,同时分析了空心率、锥度、外钢管径厚比、内外钢管强度和混凝土强度等参数对构件承载力的影响;最后建议了该类构件抗弯承载力的计算方法。结果表明:该类构件具有良好的抗弯承载力及塑性性能,构件的弯矩-挠度关系曲线可分成弹性、弹塑性、塑性三个阶段;随着锥度的增大,构件破坏位置逐渐向最小截面靠近;空心率对构件的变形曲线影响不大;锥度、空心率、外钢管强度、内钢管强度对构件承载力的影响较为显著,而混凝土强度对其影响较小;建议的抗弯承载力计算方法与数值模拟结果吻合较好。

Copyright of Journal of Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)