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水平荷载作用下外挂ALC板-钢框架体系抗裂与滞回性能试验研究
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 ...
陈杰 +6 more
doaj +2 more sources
ALC墙板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,本文设计两榀足尺单层单跨刚接钢框架-内嵌ALC墙板试件并进行拟静力试验,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的承载力 ...
钟宜宏 +5 more
doaj +2 more sources
为研究薄壁型钢混凝土(thin-walled steel reinforced concrete,TSRC)梁试件的抗弯性能,设计制作了5根TSRC梁并进行四点弯曲试验,探究不同抗剪螺杆布置方式、截面形式、剪跨比以及混凝土保护层厚度对TSRC梁试件抗弯性能的影响。研究结果表明:TSRC梁的失效模式为薄壁钢管加载点处发生局部屈曲,外围混凝土保护层出现贯通斜裂缝,混凝土保护层沿抗剪螺杆开裂;TSRC梁试件在加载过程中未发生脆性破坏,表现出较好的延性;TSRC梁开裂荷载较小,在0.11Pu ~ 0 ...
任重 +4 more
doaj +5 more sources
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。
钟宜宏 +5 more
doaj +1 more source
Relational peace versus pacific primacy: Configuring US strategy for Asia's regional order
Abstract This article challenges the presumption that American commitment to the greater Indo‐Pacific region has positive effects on regional stability. It argues that the degree to which America's strategic choices in Asia embrittle or consolidate peace depends on how they intersect with relational configurations of regional order.
Van Jackson
wiley +1 more source
Effect of type 2 diabetes on A disintegrin and metalloprotease 10 2型糖尿病对解整合素金属蛋白酶10表达的影响
Highlights a disintegrin and metalloprotease 10 (ADAM10), a sheddase responsible for the cleavage of a variety of cell surface molecules, has been implicated in the pathogenesis of Alzheimer disease, atherosclerosis, and inflammatory and neoplastic disorders, and systemic ADAM10 concentration may potentially be used as a prognostic biomarker. Our study
Sum Lam +3 more
wiley +1 more source
Highlights Several psychiatric disorders were associated with levothyroxine therapy (LT4). Depression, anxiety disorders, and attention‐deficit/hyperactivity disorder showed the strongest relation to LT4. Thyroid autoimmunity itself (no LT4) was not associated with psychiatric disorders.
Alexander Eckert +9 more
wiley +1 more source
为研究冷弯薄壁型钢货架梁柱节点子结构的抗连续性倒塌性能,构建了考虑材料断裂的节点双半跨子结构精细化数值分析模型,综合考虑立柱、挂齿、螺栓等关键组件间的复杂接触关系。通过已有节点试验验证了模型准确性后,对6个具有不同立柱厚度、螺栓数目、横梁高度和梁跨高比的节点子结构进行精细化数值分析,揭示钢货架锁螺栓节点在连续性倒塌工况下的破坏模式和抗力机制,探究节点构造特征和梁跨高比等因素对节点内力效应和子结构抗力性能的影响机理。数值分析结果表明:锁螺栓节点在连续性倒塌工况下的破坏模式主要包括挂齿撕裂和立柱撕裂 ...
任重, 刘家巍, 戴柳丝
doaj
ABSTRACT Through grain boundary segregation engineering, a crack‐free high‐strength CoCrNi medium‐entropy alloy (MEA) can be successfully fabricated via laser powder bed fusion (PBF‐LB). The influence of micron‐sized TiC particles on microstructural evolution, grain boundary segregation behavior, and mechanical properties was systematically ...
Cunliang Pan +9 more
wiley +1 more source
ABSTRACT Al‐based neutron shielding materials suffer from poor laser powder bed fusion (LPBF) processibility, hindering their simultaneous achievement of good printability and exceptional mechanical properties. In this work, the newly developed rare‐earth Al alloy (i.e., Al‐6Mg‐5Gd) was processed by LPBF technique to meet the printability, mechanical ...
Chen Yang +8 more
wiley +1 more source

