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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.)

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.)

为解决传统抗震支吊架采用“硬抗”的方式抵抗地震作用的问题，并减小传统抗震支吊架的震后残余变形，提出一种新型自复位耗能抗震支吊架。采用ABAQUS有限元软件分别对自复位耗能抗震支吊架和传统抗震支吊架进行有限元模拟，对比分析二者的应力及变形特性、滞回性能来验证所提自复位耗能抗震支吊架的抗震性能；通过建立不同参数的支吊架模型并对滞回性能进行参数分析，得到抗震斜撑复位比、刚度比和摩擦系数对自复位耗能抗震支吊架滞回性能的影响规律，并给出相应参数的取值建议；以支吊架响应峰值加速度作为工程需求参数，以支吊架破坏作为损伤极限状态，得到两种抗震支吊架的易损性曲线。结果表明：抗震斜撑复位比、刚度比和摩擦系数的取值范围分别为1.0~1.5、1.0~1.5和0.1~0.3时，自复位耗能抗震支吊架具有较好的滞回特性；新型自复位耗能抗震支吊架具有更强的鲁棒性，能够更好地保障管道系统的使用功能。

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.)

To reveal the influence of different beam end section weakening structures on the seismic performance of modular bolted welded hybrid connection joints (MHCJs), 14 MHCJs models with beam end section weakening were established by using ABAQUS and parameter analysis was conducted. The rationality of the finite element model of the joint was verified by experiments and parameter analysis. The results indicate that when the flange and web are separately weakened, it helps to reduce the stress distribution of the core module (CM) and column end steel skeleton, but increases the stress concentration phenomenon of the flange connection plate (FCP). When the flange and web of the beam end are simultaneously weakened, plastic hinges can be formed at the weakened section position of the beam end, significantly reducing the stress concentration of the CM and the damage at the FCP, improving the overall deformation and energy dissipation capacity. The research results provide theoretical support and basis for the engineering design and application of new MHCJs. [ABSTRACT FROM AUTHOR]

钢框架中心支撑结构是一种双重抗侧力结构体系，为避免水平荷载作用下中心支撑斜杆发生失稳，提出一种矩形钢管腹板开孔耗能支撑，其与钢框架采用高强螺栓连接，进而形成耗能支撑框架结构，耗能支撑发生破坏后易于替换。耗能支撑的耗能板件采用对称开孔与S形开孔两种形式，利用ABAQUS有限元软件，分析了耗能腹板厚度、长度、开孔间距等参数对耗能支撑以及支撑框架滞回性能的影响。研究结果表明：两种开孔形式的耗能支撑框架结构的支撑斜杆均未发生失稳，结构滞回曲线饱满，无捏缩现象。耗能支撑主要依靠开孔腹板的孔间板件率先进入塑性状态来耗散大部分能量。与S形开孔形式相比，对称开孔形式的耗能支撑框架结构的承载力与刚度更大，但在加载后期，S形开孔形式耗能支撑框架结构变形大的优势发挥得更明显，耗能效率高。

设计了3个足尺模块化钢框架模块间内套筒连接节点试件，针对节点试件的抗震性能开展了拟静力低周往复加载试验，研究了节点试件的滞回曲线、骨架曲线、延性、耗能、刚度退化、层间位移角和转动刚度等抗震性能指标，并对影响节点试件的抗震性能参数进行分析。研究结果表明：节点试件的滞回环呈梭形，且形状较为饱满，其具有较强的耗能能力；3个节点试件均出现明显的刚度退化现象且下降坡度平缓；3个节点试件的层间位移角分别为0.085 rad、0.082 rad和0.096 rad，节点试件均具有良好的转动能力和延性性能且满足节点抗震设计要求。试件破坏特征表明，在模块柱内梁的上、下翼缘对应位置设置内隔板对节点的抗震性能有显著改善作用。

利用ABAQUS软件对14个T形PEC柱进行低周反复加载模拟，分析不同参数对T形PEC柱抗震性能的影响规律。结果表明：T形PEC柱的滞回曲线呈饱满的平行四边形，且刚度退化稳定，耗能能力和延性良好；提高混凝土强度等级虽然可增大柱的初始刚度，但混凝土强度等级过高则会导致柱的延性降低，刚度退化加剧，抗震性能降低；在T形PEC柱内设置横向拉杆，且将x方向和z方向的横向拉杆相互焊接，有利于对混凝土形成套箍作用从而提高柱的抗震性能，但拉杆间距不宜大于150 mm；在T形PEC柱的两侧阴角处分别设置1根纵筋并将其与横向拉杆绑定后形成钢筋笼，能够明显的改善柱的抗震性能。

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.)

Copyright of Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian University of Technology 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 Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian University of Technology 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.)

现有的火灾后钢材残余特性研究大多着眼于钢材在高热下或升温后的残余静力特性，而对过火后钢材在循环荷载作用下的滞回和抗震特性鲜有研究。对于建筑结构和桥梁中常用的Q235和Q355两种钢材，对其进行了500~1 000 ℃的模拟火灾加热处理，并进行自然冷却或浸水冷却。对于冷却后的钢材试样进行了单向拉伸试验和2种不同荷载变化规律下的循环加载试验，得到了模拟温度和不同降温方式对于两种钢材滞回特征的影响规律。由试验结果可得，在受到的最高温度不高于600 ℃时，Q235和Q355钢材在自然冷却和浸水冷却后的单向拉伸和往复荷载工况下，其强度等级和弹塑性强度发展特征均与相应的未进行加热处理的钢材相似。当过火温度高于600 ℃时，自然冷却后Q235和Q355钢材的初始屈服强度会随过火极限温度的升高而逐渐下降。但在循环荷载影响下，钢材存在循环硬化效应，且该效应将随着过火极限温度的升高而逐渐显著。高温经历所导致的强度削弱会逐渐恢复。Q235和Q355钢材在循环荷载作用下的滞回刚度会逐渐下降，且极限温度和冷却方式会影响滞回刚度的下降幅度。高温过火且浸水冷却条件下，Q235和Q355钢材循环硬化效应显著，弹性域增长显著，循环荷载作用下塑性耗能能力下降明显。

基于双肢短剪切型耗能段、形状记忆合金（SMA）棒材的超弹性和碟形弹簧的恢复力，提出一种自复位双肢剪切型耗能段，可有效提高中心支撑结构的抗震性能和震后功能恢复能力。采用校正的有限元法对自复位双肢剪切型耗能段力学性能进行分析，研究其滞回性能和破坏模式；随后对考虑SMA棒材直径和碟形弹簧刚度的十个模型进行参数化分析。结果表明：自复位双肢剪切型耗能段具有良好的承载能力和自复位能力，以及较小的残余变形。拉力作用下，SMA棒材受拉且碟形弹簧静止；压力作用下，SMA棒材静止且碟形弹簧受压，整个加载过程双肢短剪切型耗能段发生变形并提供承载力。增大SMA棒材直径和碟形弹簧刚度均能有效提高构件的承载能力、割线刚度和自复位能力等，并减小构件的残余变形和等效黏滞阻尼比。所推导的力学模型可较准确地计算自复位双肢剪切型耗能段的极限承载力，为该种构件的分析与设计提供理论基础。

装配式槽钢开孔耗能支撑是在中心支撑斜杆两端设腹板开孔槽钢构成，开孔槽钢与H型钢支撑之间采用螺栓连接，可避免中心支撑斜杆受压失稳。为了研究这种支撑的滞回性能，设计了3根开孔形式不同的装配式槽钢腹板开孔耗能支撑试件，对试件进行低周往复加载试验，并进行了有限元模拟分析。研究结果表明：在轴力作用下，装配式槽钢开孔耗能支撑主要依靠端部槽钢开孔腹板的孔间板件屈服耗能，整个加载过程中支撑主体H型钢未发生失稳；加载过程中螺栓出现了滑移，滞回曲线有不同程度的蔫缩；试验中腹板开椭圆孔的试件耗能能力最强，腹板开菱形孔的试件承载能力最强；减小开孔槽钢腹板孔间板件高宽比可以显著提高试件的承载能力、加载后期的耗能能力；减小开孔槽钢腹板孔间板件高厚比对于试件的耗能能力影响不明显；保证开孔率相同的前提下槽钢腹板开椭圆孔的耗能支撑较长圆孔和菱形孔承载能力更强。

U形钢板阻尼器具有耗能能力良好、能够依靠自身变形耗能，以及性能稳定、制作方便、价格低廉等优点，但是也存在初始刚度小和承载能力低的问题。为此，提出一种具有T形截面的U形金属屈服阻尼器（简称阻尼器）。基于虚功原理和卡斯蒂利亚诺第二定理，建立了阻尼器的屈服承载力和初始刚度理论公式。基于非线性混合强化本构模型和三维延性断裂准则，建立了考虑材料延性断裂的阻尼器有限元模型。重点考察了阻尼器的刚度、屈服承载力、耗能能力和破坏模式等。通过参数分析量化了几何尺寸等参数对阻尼器力学性能的影响。研究表明，阻尼器在刚度、屈服承载力及耗能能力等方面与U形阻尼器相比都有明显的提高。阻尼器T形截面的腹板宽度和高度、翼缘宽度和厚度对阻尼器的力学性能都有显著的影响。

传统防屈曲支撑（BRB）小震下仅为结构提供刚度不提供阻尼，大震下易产生较大残余变形。为弥补BRB上述缺陷，本文提出一种新型双阶自复位防屈曲支撑（DY-SCBRB），小震下支撑提前屈服耗能，为结构提供附加阻尼，大震下支撑进一步耗能并为结构提供复位能力。通过对DY-SCBRB构造分析，得到支撑工作原理并建立支撑力-位移滞回关系恢复力模型，支撑双阶耗能特性和自复位能力得到有效验证；采用ABAQUS对DY-SCBRB进行静力加载，分析与验证新型支撑的滞回性能，找到支撑第一刚度比β1、第二刚度比β2、复位比αc和屈服位移比αyc对DY-SCBRB滞回性能的影响规律，给出支撑性能参数取值建议，研究表明：DY-SCBRB不仅具有显著的双阶耗能特性，可以实现不同水平地震下的全阶段耗能，而且其自复位能力强，能够大大降低结构震后残余变形；β1和β2增加可以提高支撑最大承载力，β1和β2越小支撑耗能能力越强，β1和β2变化对支撑初始刚度和复位能力无影响，β1和β2建议取0.78~1.58和0.006~0.014；αc增加能够提高支撑初始刚度和复位能力，αc减少有利于增强支撑小震下耗能能力，αc建议取0.75~1.25；αyc越小支撑综合抗震性能越好，αyc建议取0.5~1.5。

钢框架中心支撑结构是一种双重抗侧力结构体系，为避免水平荷载作用下中心支撑斜杆发生失稳，提出了矩形钢管腹板开孔耗能支撑，其与钢框架采用高强螺栓连接，进而形成耗能支撑框架结构，耗能支撑发生破坏后易于替换。耗能支撑的耗能板件采用对称开孔与S形开孔两种形式，利用ABAQUS有限元软件，分析了耗能腹板厚度、长度、开孔间距等参数对耗能支撑以及支撑框架滞回性能的影响。研究结果表明：两种开孔形式的耗能支撑框架结构的支撑斜杆均未发生失稳，结构滞回曲线饱满，无捏缩现象。耗能支撑主要依靠开孔腹板的孔间板件率先进入塑性来耗散大部分能量。对称开孔形式的耗能支撑框架结构承载力与刚度比S形开孔形式的更大，但加载后期，S形开孔形式变形大的优势发挥更明显，耗能效率好。

为改善钢板剪力墙滞回性能，使其具备稳定耗能能力，提出了一种管肋开孔双钢板剪力墙。利用Abaqus有限元软件建立了包括管肋（开孔）双钢板剪力墙在内的7种不同类型钢板剪力墙的有限元数值模型，对其破坏模式、滞回性能、承载力、刚度和耗能能力等方面进行了对比分析。结果表明：在墙体钢板横截面总厚度一定的情况下，管肋双钢板剪力墙具有较高的承载能力和良好的滞回性能；钢管作为板间加劲肋，通过合理布置能够对两侧的墙面板起到较好屈曲约束的效果，面外变形较小，同时减小了由于墙面板预开孔洞造成的承载力、强度和刚度的损失；使用圆形钢管或方形钢管作为加劲肋对墙体承载能力影响较小，但使用方形钢管具有较好的屈曲约束效果和耗能能力；使用方形钢管作为管肋开孔双钢板剪力墙的加劲肋时综合性能最优。

提出了一种改进型四边连接的圆形压痕钢板剪力墙，基于数值方法评估了其滞回性能，并与传统平钢板剪力墙和开圆孔钢板剪力墙的滞回性能进行了对比分析。随后，系统研究了压痕孔径、压痕孔距、压痕深度、钢板厚度、钢材强度和压痕布置方式等参数对其滞回性能的影响。分析结果表明：压痕钢板剪力墙的抗侧刚度和水平承载力介于传统平钢板剪力墙与开圆孔钢板剪力墙之间，通过优化压痕设置可实现其抗侧刚度与抗剪承载力的合理匹配。钢板厚度和钢材强度对压痕钢板剪力墙力学性能影响显著，随着钢板厚度、钢材强度等级的增加，其水平承载力呈增大趋势；压痕孔径、压痕孔距和压痕深度对压痕钢板剪力墙力学性能有一定影响，随着压痕孔径的增加，其水平承载能力呈下降趋势；随着压痕孔距的增加，其水平承载力与抗侧刚度呈增大趋势；随着压痕深度的增加，其水平承载力、抗侧刚度均呈降低趋势，但其耗能能力呈增大趋势。压痕布置方式对压痕钢板剪力墙的滞回性能、抗侧刚度及水平承载力影响不明显。

ALC墙体已成为装配式建筑结构中一种常用的墙体形式，但在正常使用中经常出现的墙体开裂，对建筑的美观和耐久性产生了不利影响。为研究内嵌ALC墙板抗裂性能及其对钢框架受力性能的影响，设计并完成两榀足尺单层单跨刚接钢框架-内嵌ALC墙体试件拟静力试验，墙体与钢框架分别使用内置锚连接和管卡连接两种方式，同时变化不同墙体饰面做法，经过实测得到试件的滞回曲线、骨架曲线、刚度退化曲线并观察关键试验现象。试验结果表明，两个试件的滞回曲线都是比较饱满的滞回环，内置锚试件的承载力略高于管卡试件，试件都具有良好的协同工作能力。综合考虑承载力和刚度，内置锚试件的抗侧性能优于管卡试件。采用改性双组分MS胶作为ALC墙板和钢框架连接材料，比采用聚氨酯发泡连接开裂更晚，说明MS胶具有良好的变形能力，有助于提高墙体的抗裂性能。

设计制作了4个H型钢梁试件，通过拟静力试验得到不同腹板高厚比以及钢种组合下钢梁的破坏形态、滞回曲线、骨架曲线以及延性等，从而评价试件的滞回性能。随后利用有限元软件ABAQUS进行模拟验证，通过参数分析进一步补充不同腹板高厚比和钢种组合对钢梁滞回性能的影响。结果表明：随着腹板高厚比的减小，钢梁的延性和耗能能力均有所提高，且增大腹板厚度对钢梁延性的提高程度大于极限承载力的提高程度；相比同钢种钢梁，多钢种钢梁极限承载力提高了17.4%，延性降低5.6%。随着多钢种钢梁翼缘强度等级的增大，极限承载力提高程度和延性降低程度不断增大。

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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 Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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.)

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Copyright of Chinese Journal of Applied Mechanics is the property of Chinese Journal of Applied Mechanics Editorial Office 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.)

蒸压轻质混凝土（ALC）板是一种被广泛应用于装配式建筑围护体系的墙板，为研究外挂ALC墙板-钢框架体系的滞回性能和ALC墙板的抗裂性能，进行了4榀足尺2层框架低周往复加载试验，以墙板-框架连接方式、勾缝做法和饰面做法为试验参数，记录了典型试验现象，获得了滞回曲线、骨架曲线和刚度退化曲线等结果。研究表明：外挂ALC墙板可提高框架体系的初始抗侧刚度和承载力；钩头螺栓试件抗裂性能最佳，内置锚试件抗裂性能次之，滑动螺栓试件抗裂性能最差；在弹性层间位移角达到1/250之前，不同勾缝做法和饰面涂料均可满足抗裂要求，但层间位移角较大时普通砂浆勾缝、抗裂嵌缝膏勾缝和单组份密封胶的抗裂性能要优于弹性腻子勾缝和双组份密封胶的抗裂性能，饰面弹性涂料的抗裂性能优于普通涂料的抗裂性能。

综合形状记忆合金（shape memory alloy，SMA）材料和摩擦机制的优点，提出了一种具有耗能时序的变摩擦自复位阻尼器（self-centering variable friction damper with energy-dissipation sequences，SVFDES）。首先说明了SVFDES的构造设计及变形模式，开展了SMA棒的循环拉伸试验研究以确定材料的力学参数。之后利用经试验验证的数值模拟方法建立了SVFDES的精细化有限元模型，通过参数分析识别并研究了影响该阻尼器滞回性能的关键参数。最后通过对阻尼器的隔离体进行受力分析，推导了阻尼器滞回行为的理论计算公式。结果表明：（1） SVFDES在往复荷载作用下兼具自复位能力和耗能能力，并且呈现出“变摩擦”、“变刚度”的特征；（2） 阻尼器的滞回行为对摩擦副的几何构形、摩擦面的摩擦系数较为敏感，而与SMA元件的预紧力弱相关；（3） 理论计算公式和数值模拟的结果较为吻合。

In order to study the influence of steel dissipators composed of flexural-and-shear yielding plates on the seismic performance of steel frame structures, a series of numerical models of two storey and one span steel frame structures which have diagonal braces were established by ABAQUS. The influence rules of different parameters on the seismic performance of the structure, such as the bearing capacity, energy dissipation capacity, the bearing capacity distribution and the energy consumption distribution between the brace and the braced frame structure, were explored. The result indicates that the steel frame structures mainly dissipated energy by the shear plate and then the bending plates yielding into the plastic stage. The hysteretic curve of the structures are in plump and the energy dissipation performance is excellent. In the early stage of loading, the horizontal bearing capacity and energy dissipation of the structure are mainly borne by the braces. In middle and late stage of loading, the flange connecting the beam with the gusset plate and the outer flange of the column foot appear stress concentration and enter into plasticity, the horizontal bearing capacity and energy dissipation of the energy dissipation brace gradually decrease, but still more than 50% . It is concluded that the plate yield energy dissipation brace can well share the bearing capacity and energy dissipation of the steel frame structure, which can be considered for practical engineering. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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.)

提出一种新型模块装配式灌浆钢梁柱节点，其上、下模块的梁通过螺栓连接，而方钢管柱通过内套承插钢管连接，且钢管柱内壁与承插管外壁设置抗剪键并灌浆。为了研究所提出节点的滞回性能、破坏模式、节点承载力以及节点的转动能力，对2个节点试件进行了低周往复加载试验，结果表明：两试件均发生钢管柱局部屈曲，并最终在梁柱焊接处钢管柱发生开裂；该新型节点的承载力、延性以及耗能能力与比对组未灌浆承插节点基本相同，同时灌浆节点试件的塑性转角满足美国抗震规范的限值要求，表明灌浆节点具有良好的抗震性能。

利用ABAQUS软件对14个T形PEC柱进行低周反复加载计算，分析不同参数对T形PEC柱抗震性能的影响规律。结果表明：T形PEC柱的滞回曲线呈饱满的平行四边形，且刚度退化稳定，耗能能力和延性良好；提高混凝土强度等级虽然可增大柱的初始刚度，但混凝土强度等级过高则会导致柱的延性降低，刚度退化加剧，抗震性能降低；在T形PEC柱内设置横向拉杆，且将x方向和z方向的横向拉杆相互焊接，有利于对混凝土形成套箍作用从而提高柱的抗震性能，但拉杆间距不宜大于150mm；在T形PEC柱的两侧阴角处分别设置一根纵筋并将其与横向拉杆绑定后形成钢筋笼，对柱的抗震性能有明显的改善。

通过对3个12.9级高强度螺栓连接端板节点和1个10.9级高强度螺栓连接端板节点的拟静力试验，对节点的破坏模式、滞回性能、承载能力和耗能能力等滞回性能进行了对比分析。结果表明：12.9级高强度螺栓连接端板节点试件破坏时倾向于螺纹处发生脆性断裂，无明显塑性变形，而10.9级高强度螺栓连接端板节点试件在破坏时表现为受拉区螺栓脱扣；12.9级螺栓可以有效地延缓端板节点刚度的退化，同时提高节点的承载能力；使用12.9级高强度螺栓替代10.9级高强度螺栓能够提高节点的耗能能力，设置端板加劲肋能够提高节点在发生较大塑性变形时的耗能能力。通过有限元计算进一步研究了轴压比、端板厚度和螺栓预紧力等参数对12.9级高强度螺栓端板节点在往复荷载作用下受力性能的影响，分析表明：端板厚度为20 mm时，12.9级和10.9级高强度螺栓连接端板节点的滞回曲线接近，抗震性能相当，而端板厚度为24 mm的12.9级高强度螺栓连接端板节点的抗震性能有明显提高。

在已有研究的基础上，进一步探究分层型梯形加劲肋对内嵌组合平钢板剪力墙滞回性能的影响。设计出分2层和3层的交叉密肋内嵌组合平钢板剪力墙，均为双层单跨试件。利用有限元软件ABAQUS对其进行非线性和线性荷载作用加载，与已有的不分层交叉密肋平钢板组合剪力墙进行对比分析。研究结果表明：结构的承载力随着梯形加劲肋分层数目的增加而逐渐降低，但是其延性却随之增加，对比分析3个试件有限元模拟的结果，结构的承载能力和延性性能并非随着梯形加劲肋分层数目的增多而呈现线性变化，要结合实际情况综合分析结构的承载能力和延性性能来确定梯形加劲肋分层数目的多少。

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.)

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.)

结合波纹钢板剪力墙以及平钢板剪力墙的优点，提出一种伪波纹型交叉密肋平钢板组合剪力墙结构。利用有限元分析软件ABAQUS建立足尺模型进行数值模拟研究，并通过改变梯形加劲肋的间距、高度和顶部宽度研究其对结构抗震性能的影响。研究结果表明：减小梯形加劲肋的间距以及增大梯形加劲肋的高度都可以有效地提高结构的滞回性能以及承载能力，但是当加劲肋高度超过一定值后，结构的滞回性能提高不明显；增加加劲肋顶部宽度对增强结构的滞回性能效果不明显，但是在加载前期可以减缓结构刚度的退化，在加载后期会适当提高结构的承载能力。

A slip damped brace (SDB) without shape memory alloy (SMA) is an important component of an innovative self-centering SMA brace, so the mechanical property of SBC should be studied to provide a new way to give the analysis and design reference for the innovative self-centering SMA brace.The SDB is composed of four steel plates, two slip bolts, two fixed bolts, low modulus shims and steel shims.Cyclic tests were carried on slip damped brace specimens to consider the effect of bolt torque, and four numerical models are conducted to investigate the influencing factor of friction coefficient by verified finite element method, so the hysteresis curves and energy dissipation capacity can be obtained.Finally, by combining with the test and FE results, the change rules of friction surfaces in slip damped brace under different displacement will be revealed in detail, and the numbers of slip surfaces in different stage are summarized, so the mechanical model of slip damped brace can be obtained, [ABSTRACT FROM AUTHOR]

为了研究腹板开椭圆孔耗能支撑的滞回性能，进行了3个支撑试件的低周往复加载试验，研究支撑长细比和耗能腹板长度对这种支撑耗能能力和滞回性能的影响，得到试件的滞回曲线、骨架曲线、刚度退化曲线、延性系数、等效黏滞阻尼比等。试验结果表明：在低周往复荷载作用下，腹板开椭圆孔耗能支撑依靠腹板开孔板件进入塑性耗散能量。耗能支撑滞回曲线饱满，耗能能力强，初始刚度较高。孔间板件断裂破坏导致耗能支撑试件失效，试件呈现延性破坏。试验过程中，中部工字钢保持弹性状态，没有进入塑性。相同长细比下耗能腹板的长度越长，耗能支撑滞回曲线越饱满，变形能力、承载能力和等效黏滞阻尼比越大。建立了ABAQUS有限元分析模型，有限元分析结果与试验结果吻合良好，可以有效模拟腹板开椭圆孔耗能支撑的滞回性能。

通过试验探究一种X形软钢阻尼器的耗能性能，并采用构件层次的损伤模型进行损伤退化分析。对6组X形软钢阻尼器单片进行了拟静力试验研究，结果表明该阻尼器能实现全截面同时屈服，试件滞回曲线饱满，具有良好的塑性变形能力，但在大位移作用下，阻尼器局部影响区具有较明显的损伤退化；对比研究了3种适用于钢构件的构件层次损伤模拟，利用预测结果与试验结果最为吻合的损伤模型对阻尼器试件进行损伤预测，建立损伤指数与损伤程度对应关系，为阻尼器震后损伤评估及更换提供依据。

提出一种新型波纹侧板钢管混凝土组合柱-钢梁框架节点形式——在节点核心区沿钢梁上下翼缘方向设置贯通隔板，梁翼缘设置加强板，柱四角布置方钢管并沿高度方向焊接波纹侧板形成钢骨架，骨架腔内灌注混凝土。利用ABAQUS软件建立有限元数值模型，并与常规节点的滞回性能、受力特性和破坏模式进行对比，发现设置加强板能有效提高节点的承载力，且能使塑性铰沿翼缘外移，两类节点的滞回曲线均较为饱满，耗能性能和延性较好。分析加强板厚度、混凝土强度、柱钢材强度等因素对此类节点抗弯承载力的影响，结果表明：加强板厚度、钢梁钢材强度、钢梁极限弯矩和梁柱线刚度比对节点抗弯承载力有显著影响。在参数分析的基础上建议了波纹侧板钢管混凝土组合柱-钢梁节点的抗弯承载力简化计算公式，简化计算公式所得结果与有限元结果吻合良好。

为了研究墙体构造对双片OSB覆面冷弯薄壁型钢墙体滞回性能的影响，进行了单调和低周反复荷载下6个冷弯薄壁型钢墙体的试验研究，分析了边梁、石膏板及副龙骨等参数对墙体抗剪承载力、滞回性能及延性的影响，试验结果表明：边梁的存在使墙体承载力提高了12%左右；内侧添加石膏板使组合墙的初始刚度提高了20%左右，但对延性比和极限承载力对应位移影响较小，说明试件荷载-位移曲线下降段的力学性能主要是依靠更强的OSB和冷弯型钢框架的连接；减小副龙骨的厚度和强度会降低组合墙的承载力、初始刚度及极限承载力对应位移。试件破坏集中在组合墙边立柱下部的1/3处、底部导轨及垂直板缝处，未见副龙骨局部屈曲破坏；试件破坏模式为螺钉左右倾斜并拔出OSB，组合墙角部出现螺钉剪断及OSB被撕裂。试件滞回曲线呈“捏缩”状，荷载-位移曲线下降段的承载力衰减和刚度退化明显，且耗能较低。

对不同轴压比和压弯方向的5个冷轧圆端椭圆钢管试件进行拟静力试验研究，得到各试件的滞回曲线并讨论了其破坏模式、屈服/极限荷载、延性和耗能能力。基于试验结果，建立1 080个圆端椭圆钢管压弯构件有限元模型，并开展参数分析，提出实用抗震设计方法。研究表明：柱脚的局部屈曲导致了试件的破坏，不同压弯方向的试件的局部屈曲破坏形态不同。试验中钢管截面的平直板段最先屈曲，且具有稳定的屈曲后性能。更大的轴压比会造成更早的局部失稳和更严重的柱底破坏，从而导致试件延性降低。绕强轴压弯试件的截面塑性弯矩可以得到更充分的发展。对有限元模型数据进行最小二乘和下边界曲线拟合，得到基于延性和基于承载力的实用设计方法。

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.)

Pseudo static tests of four full-scale edge joint specimens are implemented to study the seismic performance of joint in panelised modular steel structure. The hysteretic behavior, bearing capacity, deformation and energy dissipation capacity of joints are evaluated based on the measured load-displacement data. Furthermore, the failure modes and the effect of different variables on seismic performance of joint are analyzed. The test results show that failure modes of the joint include column wall bulge, connector deformation and beam flange local buckling. The hysteresis curves of CT2, CT3 and CT4 exhibit plump shuttle shape, the maximum equivalent viscous damping coefficients are 0.21～0.25, the ultimate storey drift angle reaches 0.07～0.09 rad, indicating the joint has excellent seismic performance and rotation capacity. Thickness of column wall in panel zone and angle steels would affect the seismic performance of joint significantly, vertical-splicing bolt type has a remarkable effect on the hysteretic performance and initial flexural stiffness of joint. The results provide technical support for the engineering application of the joint in panelised modular steel structure. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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.)

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, 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.)

含可更换剪切型耗能梁段钢框筒利用位于裙梁跨中的耗能梁段集中塑性变形,有利于震后耗能梁段的替换和结构使用功能的快速恢复。为研究耗能梁段的构造对子结构和耗能梁段滞回性能的影响,基于某一30层原型结构的子结构,考察了耗能梁段长度、腹板高厚比、翼缘宽厚比、加劲肋间距、加劲肋单双面布置的影响。研究表明:随着耗能梁段长度的增加,子结构的承载力逐渐减小,耗能梁段的超强系数、塑性转角逐渐减小,建议耗能梁段的长度取柱距的(0.15～0.24)倍;随着腹板高厚比的增大,各子结构的承载力、累积耗能明显减小,耗能梁段的超强系数、塑性转角逐渐增大,极短型耗能梁段相比普通型耗能梁段对腹板高厚比的变化更为敏感;翼缘宽厚比的变化对子结构和耗能梁段性能的影响较小;当加劲肋间距超过限值,对极短型耗能梁段性能的影响较大,建议普通型耗能梁段的加劲肋间距可适当超过限值;极短型耗能梁段宜布置双面加劲肋,加劲肋单面布置时增加其厚度对子结构和耗能梁段性能的改善作用较小。