施工技术 2011年7月下 102 CONSTRUCTION TECHNOLOGY 第40卷第345期 局部配筋对页岩空心砖墙体抗震性能影响试验研究 陈万山,杨德健2 (1.海军工程大学后指挥与工程系,天津300450;2.天津城市建设学院土木工程系,天津300384) [摘要]作为非承重结构材料,页岩空心砖能够较好地替代黏土砖.但空心砖墙体抗震性能较差,严重影响其在工 程中的应用.局部配筋是提高砌体结构抗震性能的主要方法之一.为研究局部配筋对页岩空心砖墙体抗展性能 的影响,对3种砌筑形式6组墙体进行了低周反复荷载试验.研究了局部配筋对该结构承载力、滞回性能、延性和 耗能能力等方面的影响.研究结果表明:局部配筋不仅可以提高墙体承载力,而且可以显著提高墙体抗震性能和 变形性能. [关键词]砌体;页岩空心砖;承载能力;抗展性能;变形性能 [中图分类号]TU365 [文献标识码]A [文章编号]1002-8498(2011)14-0102-04 Experimental Study on Seismic Behavior of Shale Hollow Brick Masonry Walls Influenced by Partial Reinforcement Chen Wanshan' Yang Dejian2 (1.Department of Logistics Command and Engineering Navol University of Engineering Tianjin 300450 China; 2.Department of Civil Engineering Tianjin Institute of Urban Construction Tianjin 300384 China) Abstract:Shale hollow bricks can take the place of mon bricks to some extent.But the weak seismic behavior of hollow brick masonry walls affects the application of the hollow bricks in the engineering.Partical reinforcement in the wall can improve the seismic performance of walls.In order to investigate the effect of seismic behavior of this structure the low cyclic reversed lateral loading tests on six pieces of shale hollow brick masonry walls which used three bricklaying patterns have been carried out.The bearing capacity hysteretic charaeteristics ductility and energy dissipation were researched.The result of investigation shows that setting steel reinforcement in the wall not only can improve the bearing capacity of ...
施工技术 2012年6月下 64 CONSTRUCTION TECHNOLOGY 第41卷第367期 局部退火与振动时效复合消应力法在闸门 制造中的应用 李毅,赵文芳 (武拳水电第二总队八支队,福建门361009) [摘要]在永利水电工程闸门制造过程中,为提高闸门焊缝疲劳强度和保持闸门外形尺寸的稳定性,需要进行退火 消除应力.结合仙游抽水蓄能电站机组尾水事故闸门实例,介绍了包括热时效法、自然时效法和振动时效法3种 常见的消应力方法,重点论述局部退火和振动时效两种消应力法在大型闸门消应力中的复合应用,该方法具有高 效、节能等优点. [关键词]水电站:闸门:焊接:退火:振动时效:消应力 [中围分类号]TU758:TG441 [文献标识码]A【文章编号]1002-8498(2012)12-0064-03 Application of Composited Stress Relief Method of Spot Annealing and Vibration Aging in Sluice Gate Manufacturing Li Yi Zhao Wenfang (No.8 Detachment No.2 Hydropower Force of Armed Police Xiamen.Fujian 361009 China) Abstract:During sluice gate manufacturing process in hydropower projects stress relief by annealing is necessary to improve welding seam fatigue strength and keep the dimensional stability of sluice gate. Combined with the practice of tail water accidents in Xianyou Pumped Storage Station three normal stress relief methods are introduced ineluding heat aging natural aging and vibration aging.The application of posited stress relief method of spot annealing and vibration aging in sluice gate manufacturing is emphatically introduced and the method has high efficiency and good energy saving. Key words hydroelectric power stations;sluice gate;welding;annealing;vibration aging;stress relief 在水利水电工程闸门制造过程中,经常遇到一×1.163W/(m℃),其在加热过程中易出现外 些深水头的闸门要求整体消除应力,以提高闸门焊“过烧”、局部温度不够,影响退火效果. 缝的疲劳强度,并使闸门外形尺寸更加稳定. 本文以仙游抽水蓄能电站尾水事故闸门消应 整体退火是消除应力的常用方法,其一次退火力的方法为例,探讨了局部退火与振动实效这种简 可消除90%-100%的焊接应力,但对于大型或超单高效又节约成本的复合消应力方式在闸门整体 大型焊接件进行整体退火存在以...
[关键词]砌体结构;钢筋网水泥砂浆面层;低周往复加载;抗震;加固 [中图分类号】TU362 [文献标识码】A[文章编号】1002-8498(2014)10-0041-05 Experimental Investigations on Masonry Structures Using Local Ferro-cementLaminatefor Improving SeismicPerformance Zheng Hao'², Jiang Lu',Jiang Hao (1.Shanghai Research Insitute of Building Sciences, Shanghai 200032,China; 2.Shanghai Key Laboratory of New Technology Research on Engineering Structure,Shanghai200032,China) Abstract:A strengthening strategy to use localferro-cement laminate forimproving seismic performance of masonry structures is adopted and justified in this paper. In order to validate the effectiveness of this technique, quasi-static cyclic model tests had been conducted in which two 1:2 scaled whole masonry laminate)and a control one (with constructional column and ring beam).The experimental results showed that this technique could not only increase the integrity of the walls,but also improve the ductility and the energy dissipation capacity of the walls. Besides, this technique only requires a small amount of work and has little additional influence to the original structure. It is an effective new technique for the worldwide extensive seismic retrofiting work. Key wordsmasonry structures;ferro-cement laminate;quasi-static cyclic tests;seismic; strengthening 0引言 传统砌体结构整体加固方法(如夹板墙、钢筋 自唐山大地震后,经过30多年的研究和应用,网水泥砂浆面层加固法等)一般沿墙体两侧通长进 规范,取得了较好效果。
[关键词】道路工程;就地冷再生;施工技术;质量控制;效益分析:后期观测 [中图分类号】TU248.6:U418.6【文献标识码】A[文章编号】1002-8498(2012)11-0044-05 Application of ColdIn-placeRecyclingTechnology inMaintenance andRenovationProjectfor Guanxi Line in Foshan Zhao Jing',Hou Zhaoguang² (1.Deparmen ofTransporation and CitEngineringQinghai Commaniction Technicl Colege,Xining,Qinghai81003,Chin; 2. Zhuhai Transportation Group Co. , Ltd. ,Zhuhai,Guangdong 519060,China) Abstract:Combined with the asphalt pavement maintenance and renovation project of Guanxi line in Foshan ,the authors briefly introduce construction technology of cold in-place recycling, the mix design and the control points of construction quality. They also make the quality test to formed base,analyz the economic benefits of cold in-place recycling technology. And the later observation results are analyzed. Analysis shows that all the performance of test road of cold recycled projects can meet the code requirement,and has good regeneration effect,function and structural bearing capacity of the old rosd have been greatly improved. Key words: roads; cold in-place recycling; construction; quality control; benefit analysis; late observation 目前,我国公路总里程达到187万km,其中20术,并取得了良好的效果。
[关键词]桥梁工程;空心板梁;模板;折叠式钢芯模板;施工技术 [中图分类号】TU755.2[文献标识码]A[文章编号]1002-8498(2015)08-0099-03 Construction of theFoldingSteelInternalFormworkfor WideHollowSlabBeam Zhang Shanwen,WangXiuxin (Key Laboratory ofC&PC Structure of theMinistry Edueation,Southeast University,Nanjing,Jiangsu210096,China) Abstract:There are frequently many problems in the hollow slab beams construction such as ofset, buoyancy, deformation.Through parison and analysis of application status of internal formwork,and bined with the engineering practice,which was the production of wide pre-stressed hollow slab beams in one section of the Ji'nan-Guangzhou expressway,the folding steel internal formwork was designed, which was simple product, casy installtion and dismantlement,highly generality,solving a lot of problems in the engineering construction. Key words:bridges;hollow slab beams;formwork;folding steel internal formwork;construction 在我国桥梁工程建设中,作为桥梁结构的预制难易偏移、上浮,导致尺寸偏差较大、顶板厚度变
心、中部空心的RC或PRC箱体。
2010年4月 施工技术 第39卷第4期 CONSTRUCTION TECHNOLOGY 49 客运专线双线箱梁施工上行式移动模架设计 潘春风1,巩立辉2,孙庆珍1 (1.郑州航空工业管理学院土木建筑工程学院,河南郑州450015;2.苏州大方特种车辆有限公司,江苏苏州215151) [摘要]在我国武广、郑西、温福等铁路客运专线的修建过程中,大量采用了移动模架现场浇筑32、24m双线箱梁. 分别对移动模架现场浇筑工艺与预制架设工艺、上行式与下行式移动模架的优缺点加以分析,介绍了MZ9005型上 行式移动模架的主要技术特点、技术参数、工作原理、施工工艺流程、主要结构设计计算结果以及实际应用情况,并 根据模架的实际应用情况提出了进一步优化改进的方向. 【关键词]客运专线;上行式移动模架;双线箱梁 [中田分类号]U445.463 [文献标识码]A[文章编号]1002-8498(2010)04-0049-03 Design on Hanging Movable Gantry for Construction of Double-line Box Girder in Passenger Dedicated Lines Pan Chunfeng' Gong Lihui Sun Qingzhen' (1.School of Civil Engineering Zhengzhou Institute of Aeronautical Industry Management Zhengzhou He'nan 450015 China; 2.Suzhou Dafang Special Purpose Vehicle Manufacturing Co.Lad.Suzhou Jiangsu 215151 China) Abstract:Movable gantry is used extensively in construction of double-line box girder of passenger dedicated lines such as Wuhan-Guangzhou Zhengzhou-Xi'an Wenzhou-Fuzhou railway and so on. Construction technologies of cast-in-place and precast erection are analyzed.Characteristics of hanging movable gantry and bracing movable gantry are introduced.Some technologies of MZ900S hanging movable gantry are introduced in detail such as main technological characteristics main technological parameter work principle technological process main structural design calculation result and practical application situation.Finally direction of further optimization is put forward. Key words:passenger dedicated line;hanging movable gantry;double-line...
2015年2月上 施工技术 第44卷第3期 CONSTRUCTION TECHNOLOGY D0I:10.7672/5j52015030001 宁波中银大厦工程结构设计 刘桂然,刘铁2 (1.上海建筑设计研究院有限公司,上海200041;2.宁波东部新城投资开发有限公司,浙江宁波315040) [摘要]宁波中银大厦工程采用钢管混凝土柱楼面钢梁框架钢筋混凝土筒体的混合结构体系,地下室超长、塔 楼扭转型造型、核心筒转换及大型钢结构雨篷等,均为结构设计的关键问题.介绍了其地基基础设计及地下结构 设计,着重阐述了塔楼结构设计的关键问题和塔楼结构计算分析,如框架承担的地震剪力比、楼层侧向刚度、楼层 抗剪承载力、弹性时程分析和筒体转换块分析,以及最终确定的塔楼结构抗震设计加强措施等. [关键词]高层建筑;结构设计;核心筒;转换层;斜柱;筒体转换块 [中图分类号]TU375 [文献标识码]A[文章编号]1002-8498(2015)03-0001-04 Structural Design of Ningbo Zhongyin Building Liu Guiran' Liu Tie? (1.Shanghai Institute of Architectural Design and Research Co.Lad.Shanghai 200041 China; 2.Ningbo Eastern New City Intestment and Development Co.Lid.Ningbo Zhejiang 315040 China) Abstract:The structural system of the steel tubular concrete column and steel frame beams-reinforced concrete core tube is adopted in Ningbo Zhongyin Building.The project has key design problems of super-long basement torsional shaped tower building core tube transfers and large scale steel awnings. This paper introduced the design of foundation and underground structure and then emphatically described the key problem of structural design and calculation analysis of Ningbo Zhongyin Building such as seismic shearing force ratio of frame lateral storey stiffness shear resistance capacity of storey analysis of elastic time-history and core tube transfer block.Finally the strengthening measures for seismic design are determined. Key words:tall buildings;structural design;core tube;transfer storey;inclined columns;tube ...
2016年4月上 施工技术 第45卷第7期 CONSTRUCTION TECHNOLOGY 89 D0I:10.7672/8js2016070089 孔内深层强夯地基处理效果评价 米素婷1,周立新2,周虎鑫2,黄晓波3 (1.中国地震局地震预测重点实验室(中国地震局地震预测研究所),北京100036; 2.空军工程设计研究局,北京100068;3.北京泰斯特工程检测有限公司,北京102600) [摘要]孔内深层强夯法作为地基处理的一种方式,对其进行地基处理效果评价有着重要的意义.按照预定参数 施工后,通过干密度、孔隙比、湿陷系数等室内试验和桩间土荷载试验、面波试验对比分析,桩间土地基承载力满足 设计要求,地基土体在0~6.0m深度内处理效果较差,而在6.0-15.0m范围内处理效果良好.地基处理效果评价 表明:改进成孔施工工艺,重新开展孔内深层强夯小区试验评价. [关键词]地基:强夯;湿陷性黄土:效果评价;试验 [中图分类号]TU472.3*1 [文献标识码]A [文章编号]1002-8498(2016)07-0089-03 Study on Foundation Treatment Effect Evaluation with DDC Method Mi Suting'.Zhou Lixin2 Zhou Huxin2 Huang Xiaobo (1.CEA Key Laboratory of Earthquake Prediction Institute of Earthquake Science China Earthquake Adminstration) Beijing 100036 China;2.Air Force Engineering Design Research Institute Beijing 100068 China; 3.Beijing Taisite Engineering Testing Co.Ld.Beijing 102600 China) Abstract:As a way of foundation treatment it is very important for engineering to study on treatment effect evaluation.Based on working parameters with indoor testing load-settlement testing and raleigh wave testing the treatment-effect is prehensively evaluated.Foundation bearing capacity can meet design demands.The treatment-effect is bad in 0~6.0m and well in 6.0~15.0m.According to the treatment-effect the working technology need to be improved and evaluated. Key words:foundations;dynamic paction;collapsible loess;effect evaluation;testing 1工程概况 性中等~强烈,湿陷等级Ⅳ.地基处理设计要求 场地处于西北黄土高原,属大陆性半干旱季风 为:处理深度范围内的黄土消除湿陷性,桩体密实 气候区,区域地质稳定.区内冲沟发育,山体...
施工技术 2017年8月上 54 CONSTRUCTION TECHNOLOGY 第46卷第15期 D0I:10.7672/8js2017150054 外立面悬挂装饰清水砖幕墙施工技术 袁瑞青 (中铁建设集团有限公司,北京100040) [摘要]在建筑外墙悬挂一道稳固的免装饰的清水砖墙(也可称为砖幕墙),不仅提高了建筑的保温、隔热、吸音能 力,而且室内环境达到了恒温恒湿的宜居效果.在外立面悬挂清水砖墙需采用一种托架体系,其施工工艺国内罕 见,体系复杂,而且这种砖墙围砌起来的民用建筑,在我国也逐步普遍应用.如何在悬挂施工方面采取措施确保施 工安全和成型效果是需要解决的重点.结合某工程实例,重点研究在施工过程中如何将砖幕墙施工中悬挂体系处 理后提高整个体系的稳定性,杜绝安全事故的发生. [关键词]装饰;清水砖;幕墙;悬挂体系;稳定性;施工技术 [中图分类号]TU767 [文献标识码]A [文章编号]1002-8498(2017)15-0054-03 Construction of Facade Hanging Decorative Fair-faced Brick Curtain Wall YUAN Ruiqing China Railway Construction Group Co.Ld.Beijing 100040 China) Abstract:Hanging a solid and no decoration brick wall on the exterior walls of the building (namely brick wall)is not only can improve the building thermal insulation sound-absorbing capacity but indoor environment achieves livable effeet of constant temperature and humidity.Hanging fair-faced brick wall in the facade needs to adopt a bracket system and the construction technology of this system is rare at home as well as is plex.This brick wall civil building is gradually widely used in China.How to take measures in suspension construction to ensure construction safety and molding effect is the key point to be solved.Combined with an engineering practice this paper focuses on how to improve the stability of the whole system and prevents the occurrence during brick curtain wall construction. Key words:decoration;fair faced brick;curtain wall;suspension system;stability;construction 目前,建筑行业外立面幕墙系统大多采用石采用悬挂陶土砖幕...
2015年7月上 施工技术 第44卷第13期 CONSTRUCTION TECHNOLOGY 121 D0I:10.7672/sgis2015130121 外爬塔式起重机附着墙体加固分析 王三港,李庆达,乔伟,杨磊 (中建三局集团有限公司,北京100097) [摘要]根据项目外爬塔式起重机受力特点,建立塔式起重机及支撑架一体化计算模型,确定塔式起重机支撑架最 不利工况并根据塔式起重机支撑架附着墙体反力计算墙体配筋对墙体进行加固.加固措施解决了“一”字形剪力 墙因墙体变薄引起的墙体结构承载力不足、平面外稳定及墙体开裂等问题,并满足在混凝土强度未达到结构设计 要求时顺利爬升. [关键词]高层建筑;塔式起重机;加固;承载力;稳定性 [中图分类号]TH213.3 [文献标识码]A [文章编号]1002-8498(2015)13-0121-04 Reinforcement Analysis on Wall Attached of Tower Crane Wang San'gang Li Qingada Qiao Wei Yang Lei China Construction Third Engineering Bureau Group Co.Ltd. Beijing 100097 China) Abstract:According to the particularity of tower crane the calculation model of integration of tower crane and support frame was established.The worst working condition of support frame was determined.And the wall was reinforced by means of the reaction force calculation of tower crane support frame attaching to the wall.The measures solved the issue of the insufficient of the structure bearing capacity the out-of- plane stability the wall cracking which caused by the attenuation of the“一"shaped wall.And it made the tower crane climbing when concrete strength can not reach the design strength. Key words:tall buildings;tower cranes;reinforcement;bearing capacity;stability 1工程概况 47~51层700mm 51~56层550mm 56层~屋顶 1.1结构概况 楼面500mm. 天津现代城B区项目位于天津市和平区内,南 1.2爬塔支撑架概况 侧毗邻伊势丹商场,总建筑面积263797m2 其中地 塔式起重机支撑架主要构件为水平主梁、竖向 上214201m2 地下49596m2 由酒店塔楼(209m 47 斜撑、水平斜撑及水平连接杆,施工过程中至少有2 层)、办公塔楼(339m 67层)、裙房(最高10层)及 套支撑架附着于墙上,底部支撑架提供竖向及水平 地下室(5层)组成. 支撑力,上部支撑架提供水平支...
[关键词】建筑机械;塔式起重机;外挂内爬式塔式起重机;支撑系统;安装;拆除 [中图分类号】TH213.3 【文献标识码]A [文章编号】1002-8498(2015)05-0007-03 Installation andDemolition ofSupportSystem ofExternalHanging andInteriorClimbingTowerCrane Wang Qi,Yu Jianwei,Zou Dongyang,Liu Qingfeng,Wen Liang (Steel Structure Engineering Company of China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200125,China) Abstract;Attached tower crane or interior climbing tower crane is usually used in construction of super tall building. Common climbing mode of interior climbing tower crane is that support system is arranged in elevator shaft or line shaft of super tall building,the installation process of the support system is simple. The installation process of the support system of external hanging and interior climbing tower construction specifications areintegratedinstallationand demolition process of support systemof external hanging and interior climbing tower crane are introduced in detail. Key words:construction equipment; tower cranes;external hanging and interior climbing tower cranes; support system;installation; demolition 在超高层建筑施工过程中,塔式起重机作为关件固定(见图1)。
2013年2月上 施工技术 第42卷第3期 CONSTRUCTION TECHNOLOGY 31 D01:10.7672/8gj82013030031 外墙岩棉保温板薄抹灰施工技术 王全逵,苑伟松,刘坤 (中建二局第四建筑工程有限公司,天津300457) [摘要]外墙岩棉保温板薄抹灰施工技术是近年来刚刚开始使用的新型外墙保温系统.结合工程实践,为克服普 通岩棉板吸水量大、抗拉强度低及防火性能低等缺点,采用外墙岩棉保温板薄抹灰施工技术,有效解决了该问题. 详细介绍了材料性能、施工工艺及施工要点.结果表明,该技术的应用有效降低了造价,减轻了外墙面荷载,取得 了良好的抗裂防护效果. [关键词]保温;岩棉板;网格布;施工技术 [中图分类号]TU761.12 [文献标识码]A[文章编号]1002-8498(2013)03-0031-04 Construction of Thin Plastering External Thermal Insulation with Rock Wool Board Wang Quankui Yuan Weisong Liu Kun The Fourth Construction Engineering Company Ltd.of China Construction Second Engineering Bureau Tianjin 300457 China) Abstract:Thin plastering external thermal insulation with rock wool board is a new external wall insulation system.Normal rock wool boards have the defects that they absorb a large amount of water and have low tensile strength.The application of thin plastering external thermal insulation with rock wool board successfully solved these problems.The material performance construction process and construction key points are introduced in detail.Engineering practice results show that this construction technology reduced the cost relieved the loads on external walls and obtained good anti-cracking performance. Key words:insulation;rock wool board;mesh;construction 1工程概况 合金外框中空玻璃保温门窗,传热系数 天津经济技术开发区西区西北组团(富士康) ≤2.70W/(m2K) 气密性等级达到国家标准6级 蓝白领公寓项目一期工程一标段位于天津市开发 水平;屋面铺设230mm泡沫混凝土(最薄处),传热 区西区秋实路以西,京津唐高速公路以北.1~11 系数≤0.442W/(m2 K);分隔采暖与非采暖空间的 号楼为住宅,层高3.6m 均为6层,总高度23.1m; 隔墙为200mm厚加气混凝土砌块墙,传热系数≤ 12号楼为...
[关键词]黏结强度;测试;胶粘剂;外墙外保温;饰面层 [中图分类号】TU56[文献标识码]A[文章编号〕1002-8498(2017)04-0092-03 DetectingTechnologyforCohesiveStrengthenofExternal ThermalInsulationSystemDecorationMaterials Su Yunhui,Guo Chunquan,Bai Xiaoling,Rexiti,WangYongming (Xinjiang Research Institute of Building Sciences LLC,Urumqi,Xinjiang830054,China) Abstract:With the widely application of adhesive in building decoration,building energy-saving building and building strengthen engineering,the cohesive strengthen test method in JGJ110 standard are used in building material cohesive strengthen test.According to use condition of the test method in vary engineering,the authors put forward some practice problems. Key words:cohesive strengthen;testing;adhesives; external thermal insulation system;decoration 近几年,随着外墙外保温所用材料和施工工艺随着外保温材料和施工工艺发展的多样性,虽 的迅猛发展,对检测人员的技术要求及检测方法和然很多外保温工程中已减少了对胶粘剂使用的依 类型也不断带来新的挑战。
施工技术 2015年5月上 30 CONSTRUCTION TECHNOLOGY 第44卷第9期 D0I:10.7672/sgjs2015090030 外墙外保温装饰一体化系统施工工法 李勇 (湖南省第二工程有限公司,湖南长沙410015) [摘要]外墙外保温装饰一体化系统施工工法是将外墙保温和装饰合二为一先在工厂集成加工,然后在施工现场 进行安装,一次施工即可完成保温和装饰两个工序,既满足了外墙保温要求,又确保了外墙立面装饰效果.与传统 工艺相比较,本工法具有工艺简便、工期短、质量优、综合成本低、绿色环保等特点,取得了良好的经济效益和社会 效益. [关键词]装饰装修;外保温;一体化施工;节点 [中图分类号]TU767.5 [文献标识码]A [文章编号]1002-8498(2015)09-0030-03 Construction Method for Exterior Insulation Decoration Integration System Li Yong Hu'nan No.2 Engineering Co.Ltd.Changsha Hu'nan 410015 China) Abstract:The construction method for exterior insulation decoration integration system is bining external insulation and decoration integrated in the factory first and then installing in the construction site.It can plete two processes for one time.The construction method can both meet the requirement of exterior wall thermal insulation and ensure the exterior facade decoration effect.Compared with the traditional process this method had advantages of simple process short construction period good quality low prehensive cost green environmental protection and other characteristics which has obtained good economic and social benefits. Key words:decoration;exterior insulation;integration construction;joints 随着社会的发展,对环境保护的要求越来越迫结了本施工工法. 切和重要,能源的合理使用造福子孙后代.中国是1工法特点 一个人口大国,更是一个能源消耗大国,大力提倡 1)现场施工工序简便,工程施工质量有保障 建筑节能已列入国家“十二五”计划的重要日程,也由于一体化板是集中在工厂加工,在施工现场安 是国家的一项重要国策. 装,把传统的现场人为不确定、不可控的因素都集 传统的外墙外保温系统由于其热桥工艺处理 中在工厂采用机械化予以解决,避免了外墙饰面 复杂,并存在开裂、空鼓、脱落和保温层施工后外装 层、保温层的空鼓、开裂、渗漏等质量通病,大大提 饰饰面层操作...
施工技术 2010年3月 82 CONSTRUCTION TECHNOLOGY 第39卷第3期 外墙外保温体系自重应力和温度应力分析 王满生,杨威,黄振利2 (1 北京市房地产科学研究所,北京100021;2.北京利建筑工程有限资任公司,北京100073) [摘要]以三明治外墙外保混体系为例,采用北京地区的冬夏季环境温度和日照条件,分析计算外墙外保温体系的 整体受力状况.主要考虑体系的自重应力和温度应力的影响.通过分析得出界面层和抹面层(抗裂砂浆层和装饰 层)处平行于基层墙面上的湿度应力是影响整个体系稳定性和耐久性的主要因素,同时认为当前外墙外保温体系 相应标准中缺少材料的拉压应力的力学性能指标,需要引起相关部门的重视. [关键词]外墙外保温体系;湿度应力;力学性能参数;稳定性;耐久性 [中图分类号]TU111.41 [文献标识码]A [文章编号]1002-8498(2010)03-0082-03 Deadweight Stress and Temperature Stress Analysis of External Wall External Insulation System Wang Mansheng' Yang Wei' Huang Zhenli? (1.Institute of Beijing Real Estate Science Technology Research Beijing 100021 China; 2.Beijing Zhenli Construction Co.Lad.Beijing 100073 China) Abstract:Taking some sandwich system as an example the authors analyze and calculate global mechanical status under surrounding temperature and sunshine condition in winter and summer in Beijing area and mainly think about influence of deadweight stress and temperature stress on global mechanical status.By analyzing it is found out that the key factor which can influence on stability and durability of this system is temperature stress on interface and mortar layer which horizontally parallels to wall.Also the current standards are lack of the mechanical properties indexes of tension and pression stress on external wall external insulation system which need to be paid attention for the relevant departments. Key words:extemal wall external insulation system;temperature stress;mechanical properties index; ...
2015年2月上 施工技术 第44卷第3期 CONSTRUCTION TECHNOLOGY 79 D0I:10.7672/5js2015030079 外加剂对聚合物改性水泥砂浆凝结时间的影响* 冯虎,高丹盈,徐洪涛2,赵亮平1 (1.郑州大学土木工程学院,河南郑州450001;2.郑州大学综合设计研究院有限公司,河南郑州450001) [摘要]通过系统试验,研究了聚合物改性剂、硅烷偶联剂、减缩剂及消泡剂对聚合物改性水泥砂浆凝结时间的影 响.发现聚灰比(聚合物水泥含量比)与偶联剂、减缩剂及消泡剂掺量均对水泥砂浆的凝结时间影响显著:聚合物 改性水泥砂浆的凝结时间较普通水泥砂浆有所延长,且随着聚灰比的增加而增大,但增长程度越来越小;随着3种 外加剂掺量的增加凝结时间均表现出增大的现象,但增长速率随聚灰比的增加而减弱,聚灰比的影响程度高于外 加剂;无水酒精作为偶联剂稀释剂时使聚合物改性水泥砂浆凝结时间顺延程度加剧.从凝结时间考虑,最优的聚 合物和外加剂接量如下:聚灰比0.1,消泡剂3%c 偶联剂为3%,减缩剂宜≤2%.最后对以上3种外加剂的作用机 理做了探讨. [关键词]建筑材料;砂浆;聚合物水泥砂浆;外加剂:凝结时间;聚灰比;试验研究 [中图分类号]TU526.812 [文献标识码]A [文章编号]1002-8498(2015)03-0079-06 Effect of Admixtures on Setting Time of Polymer Modified Cement Mortar Feng Hu' Gao Danying' Xu Hongtao2 Zhao Liangping' (1.Department of Civil Engineering Zhengzhou University Zhengzhou He'nan 450001 China; 2.Zhengzhou Unirersity Multi-functional Design and Research Academy Zhengzhou He'nan 450001 China) Abstract:An experimental study on the relativity between polymer cement ratio silence coupling agent defoamer shrinkage reducing admixture and the setting time of polymer modified cement mortar was carried out.The results show that the influence of polymer cement ratio coupling agent defoamer and shrinkage reducing admixture content on the setting time is significant.Compared with ordinary cement mortar the setting time of polymer cement mortar was extended and increased with the polymer cement ratio inerease but the inerease rate was more and more slow.The setting time increased with the contents of the...
2017年8月上 施工技术 第46卷第15期 CONSTRUCTION TECHNOLOGY 9 D0I:10.7672/8js2017150009 外倾式变曲率竹饰面弧墙模板支撑 一体化施工方案设计 王洪腾,沈映,陆建飞1,韩超1,徐晗2 (1.中天建设集团有限公司,浙江杭州310020;2.中天建设集团浙江钢构有限公司,浙江杭州310008) [摘要]南宁万科大厦首层角部外倾变曲率竹饰面弧墙施工,改变常规模板加固体系和支撑加固体系分离的模式, 创新性地提出一种模板支撑一体化的加固体系.施工中采用增加弧墙内钢骨,通过焊接在钢骨上的对拉螺杆将施 工中的全部荷载传递至钢骨,并通过分阶段施工数值模拟分析,确保了模板支撑体系满足强度和刚度的要求.并 设计了钢筋桁架环箍和衬模竹片的模板结构,解决了模板支撑体系中主楞抗弯刚度不足和竹片纹理施工效果的 难题. [关键词]高层建筑:模板;支撑;变曲率;数值模拟;方案设计 [中图分类号]TU755.2;TU731.2 [文献标识码]A [文章编号]1002-8498(2017)15-0009-05 Design of Integral Construction Scheme for Formwork Support of Curved Bamboo Wall with Outer-incline Bending Curvature WANG Hongteng' SHEN Ying' LU Jianfei' HAN Chao' XU Han2 (1.Zhongtian Construction Group Co.Ltd.Hangzhou Zhejiang 310020 China;2.Zhejiang Steel Structure of Zhongtian Construction Group Co.Ld.Hangzhou Zhejiang 310008 China) Abstract:In the construction of bamboo facade arc wall of Nanning Vanke Building the mode of separation of conventional formwork reinforcement system and support reinforcement system is changed and a kind of reinforcement system of formwork and support integration is innovatively proposed in the first layer corner of Nanning Vanke Building.During the construction the steel bar is increased and the whole load in the construction is transferred to the steel frame by the pull-screw which is welded on the steel frame.Through the staged construction numerical simulation it ensures that the formwork support system meets the strength and rigidity requirement.And the formwork struct...
施工技术 2017年8月上 14 CONSTRUCTION TECHNOLOGY 第46卷第15期 D0I:10.7672/8js2017150014 外倾式变曲率竹饰面弧墙模板支撑一体化施工技术 刘玉涛,沈映,陆建飞,王洪腾,韩超 (中天建设集团有限公司,浙江杭州310020) [摘要]南宁万科大厦角部外倾变曲率竹饰面弧墙施工,采用新型的模板支撑一体化加固体系,并通过项目实践形 成了一套完整的施工技术.施工中增加弧墙内钢骨,通过焊接在钢骨上的对拉螺杆将施工中的全部荷载传递至钢 骨,并设计了钢筋桁架环箍和衬模竹片的模板结构,解决了传统支撑体系刚度、强度不足,三维空间自适应差等 问题.模板支撑一体化加固体系结构设计简洁,施工工艺操作简单、快捷.弧墙施工过程弧形墙体测量定位精准, 弧墙截面厚度及钢筋定位控制准确,外立面竹条饰面纹理效果良好. [关键词]高层建筑:模板;支撑;变曲率;钢筋桁架环箍:施工技术 [中图分类号]TU755.2;TU731.2 [文献标识码]A [文章编号]1002-8498(2017)15-0014-05 Construction of Integral Construction Scheme for Formwork Support of Curved Bamboo Wall with Outer-incline Bending Curvature LIU Yutao SHEN Ying LU Jianfei WANG Hongteng HAN Chao (Zhongtian Construction Group Co.Lid.Hangzhou Zhejiang 310020 China) Abstract:The curved bamboo wall construction of Nanning Vanke Building corner applies a new kind of formwork and support integrated reinforcement system and through the project practice to form a plete set of construction technology.In the construetion the internal steel reinforeement is added in the arc wall and all the loads in the construction are transmitted to the steel reinforcement by the pull- screw welded on the steel reinforcement.And the formwork structure of the steel truss hoops and the lining mold bamboo is designed to solve the problems of insufficient stiffness and strength and poor three-dimensional space adaptation.The formwork support integrated reinforcement system design is simple the construction process is simple and fast.Are wall positioning is...
[关键词]桥梁工程;连续梁;软弱地基;填塘区;施工技术 [中图分类号]U445.4 【文献标识码]A [文章编号]1002-8498(2017)07-0132-04 Construction Technology of Supports for Cast-in-place ContinuousBeaminPondFillingAreaSoftGround HUANG Qian',GUANG Ming²,ZHANG Dongshan (1.General Contracting Branch of Road & Bridge International Co.,Lad,Beijing 100012,China; 2.No.1 Engineering Co.,Lid.of FHEC of CCCC,Beijing 102205, China) Abstract:Based on the cast-in-place box girder construction of Hewu erba munication area Cramp bridge,cast-in-situ box girder constructing of reasonable using bridge pier caps with scaffolds with less steel tube,namely steel tube column and bailey as a scaffold can greatly improve overall stability and safety of the scaffolds in the pond area,it can guarantee the construction quality of box girder and save steel consumption. In the construction, steel tube columns are arranged directly on the cap or lap beam which is made of four spell I56-steel. Through this measure, the construction of cast-in-place continuous beam in filled pond area soft ground is finished with safety and high quality. Key words:bridges;continuous beams; soft foundation;pond filling area;construction 1工程概况 C匝道桥桥址区位于原鱼塘回填区,区域土层 合芜二坝互通立交是合芜高速公路的重要组的面层为素填土,往下基本为流塑性较强的粉质黏 成部分,二坝互通立交的改建是芜湖市跨江发展土、淤泥,其自稳定性、地基承载力较差。
2015年8月上 施工技术 第44卷第15期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/8js2015150095 埋弧焊免清根技术在钢结构行业的应用* 冯清川,赖腾飞,焦燕星 (中建钢构阳光惠州有限公司,广东惠州516259) [摘要]在建筑钢结构制作行业,埋弧焊焊接工艺应用非常普遍.埋弧焊以生产效率高,焊接质量稳定,劳动条件 好等优势在钢结构加工行业古有一席之地.埋弧焊免清根技术的应用,对钢结构焊接中的成本控制有着举足轻重 的作用.介绍了埋弧焊免清根技术的优点及施工难点,并进行试件试验分析了其施工参数及技术要点. [关键词]钢结构;焊接;埋弧焊;免清根;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2015)15-0095-02 Application of Submerged Arc Welding Without Back Chipping in Steel Structure Industry Feng Qingchuan Lai Tengfei Jiao Yanxing China Construction Steel Structure Sunbright Huizhou Co.Ld.Huizhou Guangdong 516259 China) Abstract:In the structural steelwork fabrication industry submerged arc welding is widely used.The submerged arc welding has high production efficiency with stable welding quality and good working condition thus making it take a place in this industry.With the application of submerged are welding without back gouging technology it will play a significant role in the cost control of structural steelwork welding.This paper introduces the advantages and difficulties.Then through ponents test the construction parameters and technical keys of submerged arc welding are analyzed. Key words:steel structures;welding;submerged arc welding;without back chipping;construction 0引言 以对埋弧焊焊接工艺参数要求比较宽.20世纪60. 埋弧焊作为最早获得应用的机械化焊接方法,70年代,开始对窄间隙埋弧焊进行研究,并在20世 是钢结构焊接生产中应用最广泛的工艺方法之纪80年代,窄间隙埋弧焊开始应用于工业生产,它 一,也是目前在钢结构加工行业生产效率较高的 的主要应用领域是低合金钢厚壁容器及其他重型 工艺方法之一.埋弧焊免清根工艺研究者众多,然 焊接结构2.埋弧焊工艺的主要研究路线有免清 而,在钢结构加工行业中应用甚少.研究埋弧焊免 根免打底埋弧焊工艺、窄间隙埋弧...