铝合金玻璃幕墙锚固构件抗拉拔试验

本文对铝合金玻璃幕墙锚固钢构件静荷承载力试验进行剖析,探索锚固钢构件失效类型及原因,采取有效处理措施,确保幕墙铝合金骨架与主体结构安全联结.     

铝合金框架结构玻璃幕墙设计的受力分析及理论计算探讨

铝合金框架结构的玻璃幕墙在国内已逐步兴起,国内建筑界正在广泛的使用。由于铝合金框架玻璃幕墙要承受动、静荷载,特别是要抵抗水平风荷载,而目前我国对铝合金框架玻璃幕墙尚无完整的设计规范。因此,如何保证铝合金框架结构的安全性、可靠性,就此谈一些看法和采用容许应力理论分析受力、计算并通过实践施工工程后的体会:     

铝合金挤压型材框玻璃幕墙的构造与设计

通过对玻璃幕墙这一现代建筑技术的与施工的实践，以隐框玻璃幕墙为例介绍铝合金玻璃幕的构造，设计计算与方法 。     

金田广场铝合金玻璃幕墙的设计与施工

本文论述了金田广场铝合金玻璃幕墙的设计，安装及施工要点。     

铝合金玻璃幕墙性能试验

本文对铝合金玻璃幕墙三项基本性能试验进行剖析，发现在设计，材料，施工环节上可能存在的问题，采取有效措施解决，确保工程质量。     

关于建筑用铝合金管材执行标准问题的一些看法

在建筑装修铝门、窗、间隔和玻璃幕墙时,除了要用铝合金建筑型材外,还要用大量的铝合金管材,主要是方管和矩形管。现将这些建筑用的方管和矩形管称为建筑用铝合金管材。 目前我国生产铝合金建筑型材的企业约有六百家左右,这些企业同时都生产建筑用铝合金管材,年产量约占型材产量的20％,大约有二十多万吨。建筑用铝合金管材目前有这么多     

铝合金玻璃幕墙

一、发展简况及其装修特色铝合金玻璃幕墙(以下简称玻璃幕墙)是现代建筑的象征。幕墙是“非承重外墙”,不承受任何垂直荷载。它是用铝合金型材做成骨架,用玻璃构成建筑立面,形成一大块玻璃屏幕。它的作用:一是满足外墙围护作用的要求,控制和通过热、光、气、水、声、尘埃、生物等的进出;二是使建筑物内部大     

一九八九年西南铝加工厂创优产品及新技术、新工艺开发项目

一、创优产品项目国优(一项) 铝合金花纹板复评总公司优(四项) LC4铝合金棒材新评3003合金方铸块新评 LY12铝合金棒复评铝合金花纹板复评重庆市优(五项)铝合金化纹板复评燕牌高表面铝材复评 LY12合金大规格棒材复评印刷用铝板带新评铝合金玻璃幕墙型材新评二、新技术、新工艺开发项目 1.LC88专用于经编机绕线盘合金的研制 2.全面推广使用Al-Ti-B细化铸锭晶粒     

安全防护窗问世

（本刊讯）为了改善城市市容，广州等城市开始启动折网工程。防护网折除，居民的安全怎么办？很多专家和科研单位都在为折网后市民的居住安全动脑筋想办法，四川某公司已推出一款既美观适用，又具有双重防盗功能的铝合金安全防护窗。该窗采用隐框式铝合金窗，窗表面酷似玻璃幕墙，铝合金三角形框隐藏在玻璃背后，窗扇盖在窗框表面，基本上无缝隙，密封和整体性能较好，即使小偷爬上窗台也无抓手之处。在窗的内侧安装上一道可左右推拉的伸缩式防护栏，将其推在窗的一侧，完全不会影响窗的采光和通风。在房内人员外出或需要防护的时候，只需将…     

铝合金门窗型材表面缺陷消除方法

铝合金门窗玻璃幕墙等挤压型材表面在氧化着色后经常出现白条，阴阳面，粗砂面，黑色Ｖ型条纹等缺陷，有时制品表面被粘附刮伤和出现很重的机械纹（模纹）。除Ｖ型条纹缺陷外，大都与模具设计，制造，修模有直接关系。通过调研分析和实验找出了产生缺陷的机理及解决着色缺陷的途径。     

硅酮密封胶在铝合金隐框幕墙中的应用

铝合金隐框幕墙对硅酮密封胶的性能和质量有严格要求。文章介绍了硅酮密封胶的种类、性能及使用方法,并详细说明了采用硅酮密封胶制作结构玻璃装配组件的过程。     

Structural Relaxation, Glass Transition, Viscous Formability, and Crystallization of Zr-Cu–Based Bulk Metallic Glasses on Heating

In this article, we summarize our recent findings on relaxation, glass transition, viscous flow, and crystallization of Zr-Cu?Cbased metallic glasses on heating. At least two processes related to the diffusivities of different alloying elements take place in the glass-transition region of a Zr-Cu-Al-Ni glassy alloy. Also, we report an unusual solidification behavior of the bulk glassy alloy produced using low-purity Zr in which both primary and eutectic-type structural constituents were formed simultaneously during solidification of the melt. In addition, viscous flow and structure changes in the Zr-Cu-Al-Ag glassy alloy are examined in both the glass-transition and supercooled liquid regions. This alloy is found to exhibit localized phase separation leading to nanocrystallization before massive crystallization of the entire sample.     

Dynamic Racking Crescendo Tests on Architectural Glass Fitted with Anchored Pet Film

Results are presented of a pilot study conducted recently at the Pennsylvania State University Building Envelope Research Laboratory (BERL) to investigate the response of curtain wall mock-ups glazed with 6 mm (? in.) annealed monolithic architectural glass panels fitted with anchored applied film under simulated earthquake conditions. Three common film-to-frame anchoring methods were evaluated: (1) structural silicone adhesive [13 mm (? in.) triangular cross section] application along the entire glass panel perimeter; (2) an aluminum bar extrusion to anchor the film to the frame horizontal along only the top of the glass panel; and (3) two aluminum bar extrusions to anchor the film to the frame verticals along the two vertical edges of the glass panel. Serviceability (glass cracking) and ultimate (glass fallout) limit-state data were collected during in-plane dynamic racking tests. Other performance characteristics, such as cohesive failure of the structural silicone adhesive, loss of film-to-glass adhesion, film tearing, damage to aluminum anchor bars, pullout of the filmed glass unit from the frame glazing pockets, and eventual entire unit fallout, were also recorded. These preliminary tests indicated that anchorage type can demonstrably influence both the serviceability (initial glass cracking) and ultimate (glass fragment fallout and entire unit fallout) limit states of “unweathered” filmed glass panels. In this study, the structural silicone anchor provided the best serviceability limit-state performance of the three anchor methods tested, and the top anchor provided the best entire-unit glass fallout resistance.     

熔融制样-X射线荧光光谱法测定中低碳锰铁合金中锰硅磷铁

采用熔融制样-X射线荧光光谱法(XRF)测定锰铁合金中主次组分,需重点解决样品前处理中锰铁合金浸蚀铂-金坩埚的难题。实验以四硼酸锂为熔剂、碳酸锂为氧化剂,采用分步升温氧化中低碳锰铁合金,成功制备了中低碳锰铁合金玻璃片,建立了X射线荧光光谱法测定中低碳锰铁合金中锰、硅、磷、铁的方法。试验确定了最佳制样条件:以8.0000g四硼酸锂熔融挂壁作为坩埚保护层,称取0.4000g中低碳锰铁合金、0.8000g碳酸锂,混匀;将坩埚移入熔融炉,在650℃下保持20min,700℃下保持20min,720℃保持20min,升温至750℃保持40min,升温至820℃保持40min,升温至1100℃;取出冷却,加入约0.6g碘化铵,再移入炉内摇摆熔融30min,制得均一的玻璃片。实验方法用于测定1个中低碳锰铁合金实际样品中锰、硅、磷、铁,结果的相对标准偏差(RSD,n=11)为0.24%~1.0%;按照实验方法测定2个标准样品和3个中低碳锰铁合金实际样品,测定值与标准值或者化学湿法值相一致。实验方法有效解决了中低碳锰铁合金熔融制样过程中腐蚀铂-金坩埚的难题,对中低碳锰铁合金非常关注的磷元素,检出限为0.0030%(质量分数,下同),测量限为0.0090%,能够满足中低碳锰铁原料的检测要求,并且实现了主次成分的快速定量分析。     

钛合金挤压用含NaCl新型玻璃润滑剂的黏-温特性、热腐蚀及热障性能

以提高钛合金热挤压润滑效果为目的,研究了一种以磷酸盐玻璃、SiO₂和NaCl为主要组成的新型玻璃润滑剂,通过模拟挤压实验、扫描电子显微镜以及换热系数测量装置,重点分析了不同组成比润滑剂的黏度-温度曲线、高温下润滑剂对钛合金的腐蚀作用、润滑条件下钛合金与模具钢之间的换热特征.结果表明,磷酸盐玻璃、SiO₂和NaCl的质量比为70:20:10的润滑剂,在600~900℃之间的黏度变化幅度较小,为1.3×105~9.4×105 Pa·s,有利于提高钛合金挤压润滑效果.950℃下润滑剂与钛合金的接触时间不超过3 min时,润滑剂对钛合金坯料表面的高温腐蚀作用很小,且具有消除坯料表面原有氧化层的作用;但随高温接触时间的延长,钛合金表面的高温腐蚀程度逐渐增大.当TA15钛合金和H13模具钢的初始温度分别为900和400℃、新型润滑剂最终厚度约0.1 mm时,钛合金和模具钢之间的界面换热系数随实验时间的延长由185增加到1714W·m-2·s-1,而传统钛合金热挤压用硅酸盐玻璃润滑剂为286~2025 W·m-2·s-1,表明新型玻璃润滑剂具有较好的高温热障性能.      

Effect of Solute Contents of Al-Ni-Sr Alloy on Glass Forming Ability and Thermal Stability

Glass forming ability (GFA) and structural characterization of a new amorphous Al-Ni-Sr alloy melt spun were investigated on the theory of the factors for the glass formation. The GFA was varied with the ratio of Ni to Sr in detail and successful amorphous phase dispersed with 2 ～ 5 nm precipitates was prepared from Al-Ni5-Sr3. Thermal stability and crystallization behavior of the amorphous phase were determined by continuous and isothermal heating technique on DCS, resulting that the crystallization occurs by the growth of fcc Al nanocrystals on the preexistent nuclei.     

Ti基大块金属玻璃的研究与应用

阐述了Ti基大块金属玻璃(BMG)的成分设计原则及制备方法，并对Ti基非晶合金及其部分晶化复合材料的力学性能及断裂机理进行了评述。结果表明：Ti基大块金属玻璃具有较高的断裂强度、弹性延伸率及一定的塑性延伸率，而经过部分晶化获得的非晶合金基纳米颗粒复合材料，其室温塑性获得很大的改善。在此基础上探讨了该合金目前所存在的问题、研究热点以及其应用前景。     

Innovative Central Opening Strut System for Foundation Excavation

A central opening strut system is used to support a diaphragm wall for foundation excavation. This system contains at least one regular polygon module and a number of straight strut members. These strut members connect the diaphragm wall and the regular polygon module together, so that the earth pressure acting on the diaphragm wall in one direction can be transmitted to the diaphragm wall in the other directions by the arch action of this polygon module. In this research, the basic structural behavior of the central opening strut system is examined. A full-scale structural testing of the joint subassemblage is also performed to examine the ultimate strength of the joint. A construction site with five excavation stages and four layers of strut systems is chosen as the case study. The ABAQUS finite-element program is employed in the study of the behavior of this system during various construction stages. From these studies, it is found that the proposed central opening strut system is able to provide a large working space and greatly increases the efficiency of the construction work. Through proper design of the member and the joints, this system provides a better safety factor as compared with the traditional strut system.     

熔融法在X荧光分析硅锰合金中的应用

对硅锰合金前期氧化处理的方法进行研究，氧化后的硅锰合金方可安全使用铂金坩埚熔融、制得均勾硅锰合金玻璃融片、消除了Ｘ荧光分析中因硅锰合金的粒度和基体的吸收增强效应对分析结果约影响，分析结构令人满意。