Results 41 to 50 of about 3,961 (150)

型钢连接装配式剪力墙抗震性能研究

open access: yesJianzhu Gangjiegou Jinzhan, 2023
采用带锚筋的锚板、腹板、端板以及加劲板作为连接件,可实现相邻上下层预制混凝土墙板之间的干式连接。为研究该新型全装配式剪力墙的受力性能和抗震性能,进行了2个剪跨比为1.916的试件和1个相同剪跨比和配筋率的现浇整体墙体的低周往复拟静力试验,分析了该全装配式剪力墙的承载能力、耗能能力、延性、位移角、耗能效率、刚度退化等性能。研究结果表明:现浇整体墙体和全装配式剪力墙的破坏形式均为受弯破坏,全装配式剪力墙的耗能能力、延性、位移角、耗能效率、刚度退化等抗震性能指标与现浇整体墙体基本接近,但承载力有所提高 ...
吴志平   +4 more
doaj  

Non- linear analysis on the performance of buckling restrained brace concrete school building [PDF]

open access: yes, 2013
本文以一个中小学校舍抗震加固设计的实际工程为例,研究的目的是分析防屈曲支撑的滞回曲线,采用非线性时程分析的方法,简单介绍防屈曲约束支撑在MIdAS软件中非线性时程分析的应用过程,得到防屈曲支撑的滞回曲线与试验的滞回曲线相吻合。Taking an actual school building's seismic design as an example,The purpose of the study is the analysis of buckling- restrained brace ...
姚林利, 张树传, 李强
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Giant Tunability of Individual Magnetic Skyrmion Size via an Oscillating Local Magnetic Field

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Magnetic skyrmions hold great promise as memory and computing elements in future spintronic devices. Despite the demonstration of various devices, techniques for addressable and high‐precision manipulation of individual skyrmions remain scarce.
Cai‐Hong Xie   +13 more
wiley   +1 more source

Interfacial Electronic Interactions in Hierarchical Heterostructure Electrocatalyst for Energy‐Saving Hydrogen Production at Industrial Current Densities

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen   +13 more
wiley   +1 more source

Structure Chart Analysis of Yingxian Wooden Tower [PDF]

open access: yes, 2014
应县木塔又名佛宫寺释迦塔,建于辽清宁二年(1056年),塔平面为八角形,底层直径30.27米,总高度67.31米,外观五层,为木结构楼阁式建筑,是目前世界上现存体量最大、年代最久的高层木结构建筑,是中国古代工程技术最杰出的代表。 近年来,木塔因为伤病累积,塔身中二、三层柱架出现严重扭曲,已有倾塌可能,引起了各方面的关切。因木塔体量巨大,结构复杂,一般的文物保护专家难以处理工程结构问题,而一般的结构工程专家又难以在短时间摸清木塔结构。有专家提出,需要首先建立起一个符合木塔实际构造的结构模型 ...
俞正茂
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Size‐Dependent Hydrogen Dissociation Capacity in Ni/CeO2 Catalysts for Low‐Temperature CO2 Methanation

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Converting CO2 to CH4 under mild conditions is a promising strategy for solving environmental and energy problems, but also a challenge. In this work, the low‐temperature CO2 hydrogenation process over Ni/CeO2 catalysts was significantly accelerated by optimizing the H2 dissociation ability of Ni through the size effect, thus A‐Ni/CeO2 with an
Yu Xie   +8 more
wiley   +1 more source

一种新型自复位耗能段的力学性能试验研究

open access: yesJianzhu Gangjiegou Jinzhan
基于扩孔螺栓连接型耗能段和自复位SMA支撑,提出一种新型自复位耗能段,具有强耗能、高延性、低残余变形和低损伤等特点,可进一步提高偏心支撑结构的抗震性能和震后功能恢复能力。分别设计3个考虑摩擦滑移的自复位耗能段和1个普通自复位耗能段试验模型,并进行往复加载研究,得到其变形或破坏模式、滞回曲线和骨架曲线等。结果表明,滑移阶段耗能段处于相对静止状态,所有构件均处于弹性;非滑移阶段中耗能段依次发生滑移、屈服、翼缘和腹板屈曲现象,整个过程中自复位SMA支撑中SMA受拉,并为自复位耗能段提供承载力、耗能能力和复位力。
张波   +4 more
doaj   +2 more sources

含可更换剪切型耗能梁段的高强钢框筒结构抗震性能分析

open access: yesJianzhu Gangjiegou Jinzhan, 2020
针对传统钢框筒结构地震耗能差和震后修复难度大等问题,结合剪切型耗能梁段耗能能力强及震后易修复、钢框筒抗侧刚度大、高强钢强度高且节约材料的优点,提出一种新型高层钢结构形式——含可更换剪切型耗能梁段的高强钢框筒结构(HSS-FTS)。给出了HSS-FTS的初步设计方法和耗能梁段的布置原则。为比较HSS-FTS和传统钢框筒结构(FTS)的抗震性能,采用SAP2000各建立了一个40层的HSS-FTS和FTS有限元模型,验证了有限元建模的合理性,分别对两个结构进行反应谱分析和动力弹塑性时程分析。结果表明 ...
张浩, 连鸣, 苏明周
doaj  

Surface‐Embedded Ag@Multilayer Graphene for Photothermal‐Enhanced Superhydrophobic Anti‐Icing Coatings

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang   +7 more
wiley   +1 more source

Experimental Study of Steel-reinforced Concrete Columns under Sustained Axial Loads [PDF]

open access: yes, 2014
型钢混凝土柱是由混凝土、型钢和钢筋组合而成的结构构件,具有良好的承载性能。型钢混凝土柱结合了钢筋混凝凝土的刚度和型钢的强度,是一种非常经济适用的结构形式。作为混凝土包钢结构不仅增加了自身刚度,同时能够保护型钢免于遭受火灾和局部屈曲破坏。型钢混凝土结构具有抗震性能好、承载力高、耐火性和耐久性好等诸多优点,现广泛用于高层、超高层、大跨度结构等重要建筑中。随着型钢混凝土柱的广泛应用,国内外开展了大量的理论和试验研究。目前,国内外对于型钢混凝土柱的研究主要集中在极限承载能力、型钢与混凝土的共同工作性能 ...
王洋
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