38 当代化工研究 Intermediate 技术应用与研究 2017·08 透明塑料彩色条纹的研究 韩烨飞 (南京市第二十九中学江苏210000) 摘要:本文主要探究了生活中透明塑料彩色条纹现象的产生原因在实验中先调整自然光照射在透明塑料制品上的入射角,以此找到布 儒斯特角,并以布儒斯特角照射具有应力的透明塑料,同时产生双折射,我们将这个过程等价于显色偏振来解释透明塑料呈现彩色条纹的 原因,再用不同的单色偏振光以布儒斯特角照射,以此得到形状相同但相互之间存在位移偏差的干涉条纹,最终解释了透明塑料制品上彩 色条纹的产生原因 关键词:双折射;应力;透明塑料制品;偏振 中图分类号:T文献标识石 Study on the Color Stripe of Transparent Plastic Han Yefei No .29School of Nanjing City ,Jiangsu ,210000 ) Abstract :This paper mainly explores the causes of the phenomenon of transparent plastic color stripe in life .In the experiment ,the incident angle of natural light irradiation on transparent plastic products was first adjusted to find Brewster angle ,and the transparent plastic with stress was irradiated with Brewster angle ,and the birefringence was produced .This process is equivalent to the color of the explicit polarization to explain the reason of the transparent plastic rendering of color stripes .Using different monochromatic polarized light to irradiate Brewster angle ,the interference fringe with the same shape but the displacement deviation is obtained .Finally ,the reason of the color stripe on transparent plastic products is explained Key words :birefringence :s...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2017 NO.6
设计与施工
软土地层盾构隧道施工横断面地表沉降的拟合研究 Fitting Study on the Surface Settlement in Shield Tunnel Construction Cross-sectional in Soft-soil Layer
宁波,王旭东²,李科兴1
(1.陕西铁路工程职业技术学院,陕西渭南714000; 2.同济大学地下建筑与工程系,上海200092) 摘要:基于Peck公式,分析沉降槽宽度系数、轴线地表沉降和埋深的变化关系,并基于软土地层盾构隧道施 工导致横断面地表沉降的实测数据,拟合得到不同测线的沉降槽宽度系数,并与多种经验计算公式对比。
施工技术 2012年2月下 34 CONSTRUCTION TECHNOLOGY 第41卷第359期 跳仓法在广州南站大截面预应力架空 结构中的应用 吴小松 (中国中铁建工集团有限公司深圳分公司,广东深圳518052) [摘要]介绍了跳仓法混凝土施工技术在广州南站超大截面、大跨度、大面积、高架预应力结构中的施工应用.通 过专家组对各施工方案的充分论证,确定采用跳仓法进行施工.首先讲述了跳仓法的工艺原理,结合本工程实例 介绍跳仓法施工中的分仓设计和跳仓顺序,闹述了原材料选择、配合比优化和人模温度控制,指出了混凝土施工要 点及养护措施. [关键词]火车站;混凝土;跳仓法;预应力:架空结构 [中图分类号]TU245 [文献标识码]A [文章编号]1002-8498(2012)04-0034-03 Application of Sequence Method in Large Cross-section Prestressed Overhead Structure in Guangzhou South Railway Station Wu Xiaosong (Shenzhen Branch of China Railway Construction Engineering Group Shenthen Guangdong 518052 China Abstract:Sequence method is applied in the large cross-section big span large area elevated prestressed structure of Guangzhou South Railway Station.After the expert panel sufficient demonstrating for every scheme the sequence method is chosen.The construction process is described and the construction division and sequence are also mentioned.The raw materials choice mix proportion optimization and molding temperature control are put forward.Finally the construction key points and maintenance measures are obtained. Key words:railroad stations;concrete;sequence method;prestressing;overhead structure 混凝土跳仓法是近些年在国内少数工...
工技术 2015年10月上 CONSTRUCTION TECHNOLOGY 第44卷第19期 do:10.7672/sgj2015190024 跳仓施工坑顶支座大梁长度变化实测与理论分析 赵明 (浙江广播电视集团,浙江杭州310005) 摘要]上海世茂深坑酒店坑顶支座大梁采用跳仓法施工,大梁底部设计有无胎卷材防水层。通过对大梁浇筑后 温度和长度变化的测量与计算,分析出无胎卷材防水层在减少垫层对大梁约束中的作用,以及先浇仓段对后浇仓 段的约束影响。经研究得出,在位于坚硬地基上的垫层上面铺设3mm厚无胎卷材防水层后,垫层与上部混凝土结 构之间的摩擦系数μ为0.827。 [关键词]混凝土;跳仓法;梁;约束;摩擦系数 [中图分类号]TU3751 [文献标识码]A 文章编号】1002-8498(2015)19-0024-04 Temperature and Length Measurement and Theoretical Analysis of Support Beam Constructed by Jump Warehouse Method Zhao Ming Zhejiang Radio TV Group ,Hangahou ,Zhejiang 310005 ,China ) Abstract :The support beam of Shanghai Shimao Chasm Hotel is constructed by jump warehouse method and there is PET coil waterproof layer under the beam .By measuring and calculating temperature and length change of the beam ,this paper analyzed the constraint influence of coil waterproof layer in reducing the constraint between cushion and beam .After laying 3mm coil waterproof layer on the cushion covering hard foundation ,the friction coefficient between cushion and concrete structure is 0 .827 Key words :concrete ;jump warehouse method ;beams ;constraint ;friction coefficient 0引言 采用跳仓法施工的混凝土结构,对于单个仓段 温度变化和尺寸变化的研究以及仓段之间相互约 束的研究目前较为少见。...
粉煤灰综合利用 2010No.1 FLY ASH COMPREHENSIVE UTILIZATION 路基处治土回弹模量试验研究 The Experimental Research of the Resilient Moduli of Cement Stabilized Soils Used in Highway Subgrades 夏宁,黄琴龙 (同济大学道路与机场工程系,上海200092) 摘要:对路基处治土水泥砂进行室内回弹模量试验,并对所得试验结果进行深入分析和探讨,为相关工程实践提 供数据支持。试验结果表明,水泥含量和压实度等对水泥砂的回弹模有较大的影响。 关键词:长江口细砂水泥砂;回弹模量 中分类号:U416.111 文献标识码:A 文章编号:1005-8249(2010)01-0018-03 ( TheRoad and Airport Engineering Department ,Tongji University ,Shanghai ,200092 ,China ) Abstract :This paper obtains the resilient moduli of cement stabilized soils through experiment study and the main content is following Through the experiment study ,what the paper can obtain through the experiment is that the relation between the degree of pection and the resili - ent moduli ,the relation between the cement content and resilient moduli .Through the definite conclusion of the experimental atudy ,the reliable can be provided for the relate construction . Key words :Changjiang delta fine sand ;cement stabilized soils ;resilient modulus 地处长江口崇明岛的崇明至启东长江公路通道工 程(上海段)是国家高速公路网中上海至西安高速公 1试验 路的重要组成部分,也是长三角高速公路网规划的城 按照《公路工程无机结合料稳定材料试验规程》 际通道,同时,上海长江隧桥与崇启通道共同组成沪 (JTJ057-94)中所述回弹模量室内试验方法进行试 (崇)苏通道,是在长江口一条完整的上海经崇明至江 验,试验方案简要步骤为: ...
粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018N.4 试验与应用 超高性能混凝土胶凝材料组分优化分析 Analysis of Components Optimization of Ultra High Performance Concrete Cementitious Materials 王越洋,欧忠文1,莫金川2,刘晋铭,王经纬 (1.陆军勤务学院军事设施系,重庆401311;2.海军勤务学院战勤指挥系,天津300450) 摘要:以海砂为骨料,对水泥、硅灰、纳米微珠、超细高炉矿渣粉、高效抗裂膨胀剂五种胶凝材料进行遵选及 配合比优化。采用混料设计中分析较为全面的单纯形重心设计的方法,对胶凝材料各掺量进行响应面分析及优化,建 立了可信度较高的回归模型,准确预测了超高性能混凝土达到最大28d强度时胶凝材料各组分的掺量。 关键词:胶凝材料;混凝土;水泥;硅灰;优化 中图分类号:TU528.31 文献标识码:A 文章编号:1005-8249(2018)04-0009-05 Wang Yueyang' ,Ou Zhongwen' ,Mo Jinchuan' ,Liu Jinming ,Wang Jingwei ( 1.Army Logistics University of PLA ,Chongqing 401311 ,Chongqing China ; 2 .Naval Logistics University ,Tianjin 300450 ,China ) Abstract :Using sea sand as aggregate ,five cementitious materials including cement ,silica fume ,nano micro-bead ,slag powder ,and anti - eracking admixture were selected and the mix ratio was optimized .Using the simplex center of gravity design method which is more prehensive in the analysis of mixed materials ,response surface analysis and optimization were performed on each dosage cementitious materials ,and a highly reliable regression model was established to accurately predict the maximum performance of ultra-high perf...
粉煤灰综合利用 2013.2 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 超高性能水泥基材料的制备及其强度影响因素研究 Study on the Preparation Methods of Ultra-high Performance Cement-based Material and its Strength Influence Factors 刘数华12,徐志惠2,张洁3,刘显军4 (1.建筑安全与环境国家重点实验室,北京100013 2.武汉大学水资源与水电工程科学国家重点试验室,武汉430072 3.湖北三箭建筑工程有限公司,随州441300; .随州九易通路桥公司随州,441300) 摘要超高性能水泥基材料是继高强、高性能混凝土之后,出现的一种力学性能、耐久性能都非常优越的新型建筑 材料。本文通过大量试验,分析水胶比、粉煤灰、养护条件对超高性能水泥基材料抗压强度的影响,并采用扫描电镜 (SEM)来探究矿物掺合料(主要是粉煤灰和玻璃粉)对硬化浆体微观形貌及水化产物影响的微观机理。研究结果表明: 超高性能水泥基材料的强度随水胶比的减小而增大;粉煤灰可以作为掺合料加入超高性能水泥基材料中,能改善RPC 微观结构,提高其性能;高温蒸养可显著提高超高性能水泥基材料的强度。 关键词:超高性能水泥基材料;强度;水胶比;粉煤灰;养护 中图分类号:TU528.31 文献标识码:文章编 文章编号:1005-8249(2013)02-0016-03 Liu Shuhua ,Xu Zhihui ,Zhang Jie ,Liu Xianjun ( 1.State Key Laboratory of Building Safety and Built Environment ,Beijing 100013 : 2 .State Key Laboratory of Water Resources and Hydropower Engineering Science ,Wuhan University ,Wuhan ,430072 ; 3 .Hubei Sanjian construction engineering Co .Ltd .Suizhou ,441300 : 4 .Suizhou Jiuyitong Roads and Bridges Co .Ltd .Suizhou ,441300 ) Abstract :The ultra-high performance cement-based material es after the high-strength and high-performance concrete which is a new kind of building material with ultra-...
201705 百家争鸣 当代化工研究 177 Intermediate 设计与优化电力企业物资编码标准 张梁 (华电国际十里泉发电厂物资公司山东277100) 摘要:改革开放以来,我国综合国力,经济实力得到了长足的发展,对于电力领域所取得的成就,大家也是有目共睹。本文围绕在快速 发展的电力行业中,物资编码管理所存在的问题亟待解决,深入思考结合工作经验提出了优化的对策。其中以某电力企业为案例,分别就 物资编码管理体系构建以及物资编码信息管理两方面着重分析,希望可以为相关人员提供参考 关键词:电力行业;物资编码标准设计 中图分类号:T 献标识码:A Design and Optimization of Material Coding Standard for Electric Power Industry Zhang Liang ( ShiLi-quan Power Plant Materials Company ,Huadian Power International ,Shandong ,277100 ) Abstract :Since the implementation of reform and opening-up policy ,China's prehensive national power has got considerable development and the achievement obtained in electric power field is obvious to all .In this paper ,around the fast-developed electric power industry ,we have found that the problems of materials coding management need urgent solution ,for which ,optimized countermeasures have been put forward on the basis of deep thinking and working experience .Taking one electric power enterprise as the case ,it has mainly taken analysis of the materials coding management system building and materials coding information management so that to provide reference for the related personnel . Key words :electric power in...
2016年2月上 第45卷第3期 CONSTRUCTION TECHNOLOGY doi:10.7672/sgjs2016030091 行车屋面变形缝构造施工技术 解小东,马广生,王亚坤,张喜红,徐玉春 (中建八局第一建设有限公司,山东济南250100 摘要]论述了一种新型行车屋面变形缝构造设计与施工方法。通过对行车屋面变形缝增加一系列构造措施,包 括减震、耐磨、接水与导流等构造,有效解决了现有设计和工艺上的不足,为克服同类工程质量通病,提供了可靠的 技术参考。 关键词】行车屋面;变形缝;减震;耐磨;施工技术 [中图分类号】TU761.11 文献标识码】A 文章编号1002-8498(2016)03-0091-05 Structural Construction Technology of Deformation Joints in Driving Roof Xie Xiaodong ,Ma Guangsheng ,Wang Yakun ,Zhang Xihong ,Xu Yuchun The First Company of China Eighth Engineering Bureau .Ji'nan ,Shandong 250100 ,China ) Abstract :A new type of structure design and construction of deformation joints in driving roof is introduced .It is effectively solved the deficiency of current design and construction through adding the structures of damping ,wear resistance and water diversion ,providing a reference for similar projects . Key words :driving roofs ;deformation joints ;damping ;wear resistant ;construction 0引言 排走。 当前国内建筑物的行车屋面变形缝存在功能 2)变形缝内的填充与防水传统的变形缝做 性缺陷,如接缝处的构造破损,在结构收缩变形和 法中,防水层一旦破坏,渗水有可能沿变形缝两侧 动荷载作用下,卷材耐久性不足,卷材破损或老化, 梁侧面的结构裂缝或者对拉螺栓孔向两侧渗水, 造成开裂渗水,或造成变形缝处的结构梁向下或侧 影响建筑使用效果。本行车屋面变形缝,在对拉 面渗水,严重影响结构使用。维修困难且费用高。 螺栓孔封堵好的前提下,在变形缝内梁侧面涂刷 鉴于上述现有设计和工艺上的不足,本工程行 防水涂料,并延伸至梁底至...
38 应用能源技术 2012年第6期(总第174期) doi:10.3969jissn.1009-3230.2012.06.010 自然通风湿式冷却塔防冻数值研究 李永华李燕芳魏杰潘昌远 (华北电力大学能源与动力工程学院,保定071003) 摘要:由于我国北方地区冬季气温较低,冷却塔普遍存在结冰问题,必须采取一定的防冻 措施通过FLUENT 软件模拟分析得出进塔水温对塔内不同特征面水温的影响规律并进一步 模拟加装不同层数挡风板后冷却塔内流场的变化。计算结果表明:①当运行工况其它条件不变 时随着进塔水温的升高塔内不同特征面最低水温升高;②加装一定层数挡风板能使填料下面 空气温度场和进风口上沿面空气速度场分布逐渐趋于均匀,有利于防止塔内结冰;③选取进塔 水温分别为17.80℃、21.95℃、26.77℃、30.04℃时,分别加装4、3、2、1层挡风板可有效防止 塔内结冰。 关键词:冷却塔;结冰;挡风板;数值模拟 中图分类6文献标 志码:B文章编号:1009-3230(201206-0038-05 Antifreeze Numerical Study on Natural Draft Wet Cooling Tower LI Yong-hua ,LI Yan-fang ,WEI Jie-ru ,PAN Chang-yuan ( and Power Engineering School of North China Electric Power University .Baoding 071003 ,China ) Abstract :As the lower temperature of China in winter ,cooling towers are easy to be frozen so some arti -freeze measures must be taken .Using the FLUENT software simulation ,this article analysis to obtain the effect of water inlet temperature on water temperature of different characteristic planes ,and further simulates the flow field variation in the cooling tower after installing windshield of different layers .The calculation results indicated that 1)when other condition operating conditions remain unchanged ,with ...