施工技术 2016年8月上 42 CONSTRUCTION TECHNOLOGY 第45卷第15期 D0I:10.7672/8js2016150042 同步液压集群交替顶升技术在大跨径双曲面坡 椭圆形钢网架施工中的应用* 吴兴宏1,路亚屁2 (1.湖北工程学基本建设管理处,湖北孝感432000:2.涮北工程学院土木工程学院,湖北孝感432000) [描]湖北工程学院已建成的体育馆屋面大跨径双曲面坡椭形铜网察工程建筑高度高,平面异形,传统脚手架 搭设面大,容折费用高,工序繁,高空作业存在容全隐患不易塔设施工平台,容装质量不易俱障,网架投影部 分常暂停施工.过研究同步液压集群交替项升技术在大跨径双曲面破钢网容梨中的应用,在地面或接近地面 的位置完成安装与检测工作.工程实践表明,同步液压集群交替顶升技术具有顶升费用低、网架提影部分可以交 叉或同步施工等优点. [关键词]体育馆;钢传构;安;液压项升;双曲面坡;网架 [中图分类号]TU758.11 [交献标识码]A [交章编号]1002-8498(2016)15-0042-03 Application of Synchronous Hydraulic Jack-up Technique on Large-span Oval Steel Space Truss Construction Wu Xinghong' Lu Ya'ni (1.Basic Construction Management Office of Hubei Engineering Unizersity Xiaogan Hubei 432000 China; 2.School of Civil Engineering Hubei Engineering Unirersity Xiaogan Hubei 432000 China) Abstract:Steel structure project with traditional scaffolding have big installation area and high building height which have lots of problems such as the high cost of installing and dismantling tedious process potential safety hazard working on the higher levels construction platform are not easy to built installation quality is hard to guarantee.While the synchronous hydraulic cluster alternating jack-up technique have many advantages for instance about 80%of the construction work quantity can be pleted in the location of the ground or close to the ground low jack-up cost cross or synchronous construction of grid projection.Combining with the large-span oval steel space truss structure engineering which ...
施工技术 2014年9月下 10 CONSTRUCTION TECHNOLOGY 第43卷第18期 D0I:10.7672/sgjs2014180010 可调节型套筒在钢筋笼连接中的应用研究* 李智斌,赵杰,邵康节,张涛,冯大斌,赵基达 (中国建筑科学研究院建筑结构研究所,北京100013) [摘要]提出的可调节型套筒及施工方法可使剥肋滚轧直螺纹钢筋连接技术成功应用于钢筋笼的连接,且钢筋接 头性能可达到《钢筋机械连接技术规程》GJ107一2010中I级接头的要求,并克服常规钢筋笼连接技术的部分 缺陷. [关键词]钢筋笼;机械连接;可调节型套筒;应用 [中图分类号]TU755.332 [文献标识码]A [文章编号]1002-8498(2014)18-0010-03 Application Research on Adjustable Sleeves for the Connection of Rebar Cages Li Zhibin Zhao Jie Shao Kangjie Zhang Tao Feng Dabin Zhao Jida Institute of Building Structures China Academy of Building Research Beijing 100013 China) Abstract:With the adjustable sleeves and construction methods introduced in this paper the rolled parallel thread rebar splicing after stripping ribs technology can be applied for the connection of rebar cages successfully and its performance can meet the requirements of grade I rebar splice in Technical specification for mechanical splicing of steel reinforcing bars JGJ107-2010.Meanwhile some other disadvantages of mon rebar splicing technology for rebar cages can be overe. Key words:rebar cages;mechanical contact;adjustable sleeves;application 0引言 带标准螺纹钢筋 带加长螺纹钢筋 钢筋笼连接是钢筋工程施工中常见的问题,传 统的搭接连接方式存在材料浪费、成本较高的问 题,而焊接连接方式则存在施工速度慢、质量较难 带标准螺纹钢筋连接件 控制、施工费用较高等问题.近些年来,机械连接 带加长螺纹钢筋 特别是直螺纹钢筋连接工艺,如直接滚轧直螺纹、 镦粗直螺纹、剥肋滚轧直螺纹等工艺,由于质量稳 定、经济合理,已成为解决这些问题的有效途径,越 带标准螺纹钢筋连接件带加长螺纹钢筋 来越多地用于钢筋笼连接.如图1所示,要完成钢 筋笼中钢筋的直螺纹连接,需要解决钢筋笼钢筋不 夏型 能转动的问题,一般来说,需要在待连接钢筋的其 带标准螺纹钢筋连接件带加长螺纹钢筋 中1根上制作加长螺纹,另1根钢筋制作标准螺纹 (见图1a) 先将连接件(套筒)全部拧入1根钢筋的 加长螺纹(见图1b) 待另1根带标准螺纹的...
[关键词]加固;移位;托换;顶升 [中图分类号]TU746.4 [文献标识码]A [文章编号]1002-8498(2013)16-0046-04 Application of AdjustableMoving-feet in Large SizeBuildingMovingProject Wu Erjun',CaoZhaona',YangYong²,HanZhenyong²,Zhao Dianfeng (1.College of Civiland Transportation Engineering,Hohai University,Nanjing,Jiangsu 210098,China; 2.TianjnUrbanConstructionGroupTianyanBuildingTransportationLmitedCompany,Tianjin300210,China; 3.Shanghai Tonggang Building Construction Ld.,Shanghai 200245,China) Abstract:Based on the analysis of technical requirements ofmobile pedestals in building transportation engineering,the characteristics of rollers,sliding supports and wheel trailer were discussed. Combined with the Haojing Building moving project with multiple routes,the selection process of moving-fet in large sizebuildingmovingprojectwasdiscussed,and theimprovement ofadjustable sliding supportswas put forward,the position of adjustable sliding support displacement control system were also introduced simply.In view of several problems in construction,the corresponding measures were provided. Key words:strengthening;shift;underpinning;lifting 近年来,以城市土地资源优化利用,提升城市功绕转轴1整体旋转82°,然后绕转轴2旋转3°,最后 能和品质,建设可持续发展的城市环境为目标的第二纵向平移12.6m移至规划新址2。
施工技术 2012年8月上 50 CONSTRUCTION TECHNOLOGY 第41卷第370期 可调制环保面砖涂料施工技术 曹所江1,徐志坚1,刘红军2 (1.扬州大学,江苏扬州225009;2.江苏圣泰建设有限公司,江苏泰州223000) [摘要]普通涂料外墙饰面易开裂是较为普遍的质量通病,面砖涂料的诞生和工程应用,表现明显优势;该工艺与 外保温系统配合施工,在外墙保温墙面及高层建筑使用可调制环保面砖涂料,大小可以调整,颜色可以根据设计调 色,面砖成型好,施工灵活,比较好的克服了开裂、空鼓、渗漏等通病. [关键词]装饰;面砖;涂料;施工技术 [中图分类号]TU767.3 [文献标识码]A[文章编号]1002-8498(2012)15-0050-02 Construction Technology on Adjustable Environment-friendly Face Brick Coating Cao Suojiang' Xu Zhijian' Liu Hongjun2 (1.Yangzhou University Yangahou Jiangsu 225009 China; 2.Jiangsu Shengtai Construction Co.Ltd.Taizhou Jiangsu 223000 China) Abstract:The normal coating decorated surface of outer wall is easy to crack.The naissance and engineering application of face brick coating show obviously advantages.The face brick coating is used on external insulation wall.In tall buildings the face brick coating can adjust dimension and color has good form effect and is easy to construct.It also solves quality problems such as crack empty drum and leakage. Key words:decoration;face brick;coating;construction 在国家节能政策的指导下,外墙外保温系统应结层、保温层、玻纤网格布、薄抹面,基础上完成可 用已比较普遍,过去在外墙饰面材料中,各种涂料、调制环保面砖涂料饰面层施工. 面砖等饰面材料为丰富建筑立面起了重要作用,而 2)饰面层施工方便,既可批刮,也可喷涂,不需 面砖以其特有的质感也备受设计者、开发商的青 切割,不需勾缝,不空鼓脱落,简便灵活,表面平整, 睐;而今在保温外墙面中面砖的使用,尤其在高层可实现花岗岩、面砖等质感效果. 建筑中受到了较大的限制,甚至被人们所拒绝. 3)大小、长短可调控,颜色可调制,横竖分格方 江苏圣泰建设有限公司承建的扬州运河一号向可控制,窗边、外墙阴阳角施工灵活、方便. 公馆、杭州世茂滨江花园等工程采用可调制环保面 4)省料、省工、省时.①省料节省了以往面 砖涂料施工,取得了较好的效果,优势突显;该工艺 砖的施工切割损耗、运输损耗,避免材料浪费.② 与外保温系统配合施工,有效解决了以往外墙普通 省工施工简便灵活,可喷涂、可批刮,节省了面砖 涂料抹面易开裂等问题,在外墙保温墙面及高层建黏...
[关键词】信息化;建筑信息模型;可视化;建筑施工动画 [中图分类号】TU17[文献标识码】A【文章编号】1002-8498(2015)06-0064-03 Discussion on theVisualizationinBuildingConstructionEnterprises Hou Chunming,Ren Zhiping,Du Fuxiang,Zheng Ziguang,Dong Huanhuan (China Construction Third Engineering Co.,Ld.Chengdu Construction Company,Chengdu,Sichuan 610041,China) Abstract:With the development of puter technology,the construction industry hasben considerable developed in information aspect,which had relied on the planar,professional, sophisticated construction drawings for construction. This paper describes series of three-dimensional softwares application in the construction enterprises,such as 3ds Max,Revit software. The software application increased the panies bidding advantages,the construction cases are directly showed in the construction stage,the construction process and field conditions are animated to realize construction field reasonable arrangement. Key words:information;building information modeling(BIM);visualization; construction animation
可视化(visualization)是利用计算机图形学和建筑单位投标是依靠招标文件、设计图纸、工 图像处理技术将数据转换成图形或图像在屏幕上程量清单等进行算量、进度计划安排、总平面布置、 显示出来,并进行交互处理的理论、方法和技术。
施工技术 2013年1月下 58 CONSTRUCTION TECHNOLOGY 第42卷第2期 可移动单侧支模体系在半封闭施工环境中的应用 郑永超,孙瑞昂 (中建一局集团第三建筑有限公司,北京100161) [摘要]为保证深基坑的稳定性,基坑围护常采用多道内支撑结构,且顶部常带有封板.因受施工条件复杂、场地 狭小等原因限制,地下工程外墙多采用单侧支模施工工艺.但围护结构中的多道内支撑及顶部封板给大模板等物 料倒运带来困难,通过对单侧支模工艺进行优化、划分单元节、底部采用可移动式行走轮设计,解决单侧模板倒运 问题.以天津于家堡03-21地块地下空间工程为例,运用可移动单侧支模体系解决了半封闭深基坑施工环境中地 下墙体的施工.实践表明,该体系不但切实可行,而且可以有效缩短施工工期,提高施工效率. [关键词]地下工程;深基坑;地下连续墙;单侧支模;行走轮 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2013)02-0058-04 Application of Movable Unilateral Formwork System in Semi-enclosed Construction Environment Zheng Yongchao Sun Ruiang The Third Construction Co.Ltd.of China Construction First Group Beijing 100161 China) Abstract:In order to ensure the stability of deep foundation excavations multiple inside supports are usually used with cover plate on top to provide enclosure protection.Due to the plex environment of construction sites and narrow operation fields most external walls of basement use unilateral formwork system.However the roof cover plate and the inside supports make it difficult to transport construction materials.It is therefore proposed to optimize the unilateral formwork system divide into units and use movable wheel at the bottom of the formwork to solve this problem.Taking the underground project of Tianjin Yujiapu Plot 03-21 as an example the movable unilateral formwork system was used for underground wall construction in the semi-enclosed deep foundation excavation.The practice shows that the movable unilateral formwork system is not on...
【关键词】高层建筑;型钢;堆载平台;吊运;施工技术 [中图分类号】TU472[文献标识码】A[文章编号】1002-8498(2015)05-0076-03 Research and Application of Construction Technology ofPortable SteelReinforcedHeapedLoadPlatform Zhang Ming,Li Penghui,Du Xiujia,Wang Haijun,Xiao Xiangwen (The FirstConstruetion Co.,Ld.ofChinaFourth Construction Bureau, Guangzhou,Guangdong 510656,China) Abstract:This paper introduces portable steelreinforced heaped load platform by analysisof traditional construetionmethod fbuilding structurewhose applicationacceleratesconstructionprogresssolvessome problems: construction materials can not be lifted due to not meeting the requirement of heaped load of concrete strength for new pouring concrete floor,floor slab cracks due to stacking materials with insuffcient strength of concrete floor.This paper introduces some research contents from different aspects, including design,manufacture,installation,lifting,demolition and so on; summarizes some construction problems,including early cracking of concreteoor,relatively slow construction progress. Key words;tall buildings;section steel;heaped load platform;lifting;construetion 0引言混凝土楼板开裂和工期长的难题。
[关键词】钢结构;桁架;钢梁;吊装;可拆卸式吊夹 [中图分类号】TU758.16[文献标识码】A[文章编号】1002-8498(2014)02-0051-03 Application and Study of the Removable Lifting FixtureforSteelStructures Zhou Tao,Zhu Haijun,Zhang Fei (China Construction Third Engineering Bureau Co.,Ltd.,Wuhan,Hubei 430074,China) Abstract;The removable lifting fixture for steel structures was researched,which was applied in Hubei New Library engineering successfully.This lifting fixture is suitable to H-shaped steel beam and trusses, especially to the large weight steel beam and trusses. Compared with the traditional welding lug lifting, the lifting fixture has the characteristics of easy fabrication,high turnover rate and versatility,moreover, energy-saving. Key words;steel structures; trusses; steel beam;hoists;removable lifting fixture 可拆卸式钢结构吊装夹具(以下简称吊夹),包10.9级M24×75 括吊夹板、连接板、高强螺栓、螺母、垫圈、卸扣。
每高强螺栓 个夹具包含2块吊夹板,每块吊夹板上设置1个卸000 扣孔、3个连接孔、1个U形凹槽。
连接板为两块, 每块连接板设置6个连接孔,如图1所示。
高强螺a吊夹板 b连接板 栓、螺母、垫圈用于连接板与吊夹板夹紧后紧固。
图1吊夹构造 卸扣用于连接钢丝绳及连接板。
该吊夹有效提高Fig.1 The structure of lifting fixture 了钢结构吊装效率,增强了构件吊装的安全性和准1工程概况 确性,缩短了钢结构吊装工期,减少了吊装过程中湖北省图书馆新馆建设工程总建筑面积 对塔式起重机的依赖性,具有制作简单、周转率高、100523m²,其中地上部分面积79699m²,地下部分 通用性强等特点。
[关键词】地下工程;软土;深基坑;支护;加劲桩;锚固件 [中图分类号]TU753[文献标识码]A[文章编号]1002-8498(2013)13-0018-06 The Design and Application of Anchoring Parts in Cement-soil ChurningPileforRecyclableSteelStrands Liu Quanlin (Shanghai Strong Foundation Engineering Co.,Ld.,Shanghai 200235, China) Abstract:Cement-soil churning pile can control the displacement of foundation excavation effectively, especially in silt soft soil. But once steel strands in it are barred underground, the strands bee obstacle and will make trouble for later construction of buildings nearby. Therefore the design of anchoring parts to recycle the barred steel strands is necessary. Compared with the different forms of anchoring parts, U-shaped columnar ones are better. They have a larger size to release the acting force caused by steel strands, minimize the damage for both anchoring part and cement-soil material. Though the stee strands can be removed, the anchoring path is unrecyclable. This paper finally presented a theoretical method to pute cement-soil churning pile with U-shaped columnar anchoring parts and the experimental results are also listed for parison. According to the results from experiment and theoretical method, they fit well and have proved that the design of U-shape columnar anchoring parts is a break though on recyclable anchoring technology in soft soil. Key words: underground; soft soil; deep foundation excavation; supports; reinforced piles; anchoring parts 我国经济发达地区大多地处软土地区,黏土、(索)技术规程》CECS22:2005中规定普通锚杆不适 淤泥质黏土能提供给桩基或者锚杆的侧摩阻力仅用于软土基坑支护。
[关键词]可再生资源;垃圾焚烧灰;应用机理;固化稳定;催化作用;辅助胶凝 [中图分类号]TU502[文献标识码]A[文章编号]1002-8498(2017)06-0086-03 TheResearchonApplicationMechanismofRenewable Resources City Garbage IncinerationAsh Xu Weixing',Cheng Yan²,Gao Luheng' (1.JianguEngineringProfessonalTechlogyInstiue,aong,Jiangsu2007,Ch; 2.BCEG International Co.,Ltd.,Bejing 100055,China) Abstract:This paper studied application constitutive mechanism of renewable resources city garbage incineration ash engineering. Through the new methods such as urban refuse incineration ash main position and chemical properties,waste incineration ash auxiliary gelation was further studied, various kinds of factors affecting gelling property of waste incineration ash in engineering application were introduced. Key words:renewable resources;garbage incineration ash;application mechanism; stable curing; catalysis;auxiliary gelation 0引言当前,焚烧处理是有效解决城市垃圾最有效的 近年来,随着城市化进程越来越快,城市垃圾办法。
2010年9月 施工技术 第39卷第9期 CONSTRUCTION TECHNOLOGY 89 厦门西站站房工程贝雷架模板支撑体系设计及应用 李小荣 (中铁建设集团有限公司,北京100040) [摇]厦门否站站房工程8.95标高板为超天跨度预应力混凝土井字梁楼善,结构施工考患新建铁路福愿线工 程列通行需要,将贝架运用到梁板棋板支撑体系中,与如式脚手联含使用,形成贝雷架横板撑体系作为 工程列穿行通送.结合豆程实际,介了贝雷架模板支撑体翠设计、计算及施构造施,明确了施互花流 程,指出测量定位、贝雷架基础施工、立安装、承重梁及贝雷容装等操作要点,保证了工程顺利实施. [关键词]屋门西站:贝雷架:支撑体系:设计计算:构措施 [中分类导]TU731.2 [文献标识梯]A[章编号]1002-8498(2010)09-0089-03 Design and Application of Bailey Trestle Formwork Support System in Xiamen West Railway Station Li Xiaorong China Railway Construction Group Co.Lid.Beijing 100040 China) Abstract:In the Xiamen West Railway Station of Xiamen-Fuzhou railway the station house floor at 8.95m elevation is designed as superHarge span prestressed concrete grillage floor.Considering the requirements of train passage the Bailey trestle is used as train passage bining with bowl-scaffold to form the Bailey trestle formwork support system.Based on project eonditions design calculation and structural measures of the support system are introduced.Furthermore the construetion process are put forward as well as operation points such as measurement and location construction of Bailey trestle foundation installation of vertical columns bearing beams and Bailey trestle.Thus the train passage is successfully pleted. Key words:Xiamen West Railway Station:Bailey trestle:support system:design and calculation: structural measure 1工程概况 穿行通道留设等条件的限利,给梁板模板支撑体系的 厦门西位于厦门市集美区后溪镇,是国家铁路设计带来团难,如何选择容全、经合理的梁板模板直 网规划中沿海大通道的重要客运站,也是福建第2个撑体系,是施工的难点.将制式器材贝雷片运用到梁 重要客运...
[关键词】厦门西站;钢结构:大跨度钢桁架;施工技术 [中图分类号】TU758.11 [文献标识码】A [文章编号]1002-8498(2010)08-0108-04 Key ConstructionTechnologyforRoofSteelStructure ofXiamenWestRailwayStation Zhou Guan’gen', Chen Zhixiang',Zhu Qian',Yu Shuiqi',Qiao Jufu²,Zhang Yan’ (1. Zhejiang Southeast Space Frame Co. , Lud. , Hangzhou, Zhejiang 311209, China; 2.Bejing Mechanized Construction Co.,Ld.,Bejing 100045,China) Abstract;The steel structure roof for Xiamen West Railway Station is the largest span railway station s s o p s s us structure, and its structure form is novel and plex. Authors study and discuss the key construction technologies of roof steel structure, and the strengthening measures for floor,integral hoisting technology for main trusses of ZHJ3 and ZHJ2, lifting technology for roof truss are introduced in detail. By finite element software, the lifting process for main truss and roof truss and hoisting of ponents are simulated to indicate that the whole structure is safe during hoisting. Key words:Xiamen West Railway Station; steel structure; large-span steel truss; construction technology 1工程概况 厦门西站是国家铁路网沿海大通道的重要客运 站,站房跨度达132m,是目前国内最大跨度的铁路站 房,建筑效果如图1所示。
站房建筑层数为3层,地下 1层,地上2层,建筑最高点53m,站房主体采用钢筋混 凝土结构,局部为型钢混凝土结构,楼面采用现浇钢筋 图1厦门西站建筑效果 Fig.1Architectural effeet of Xiamen 混凝土双向有黏结预应力框架结构,屋面钢结构采用 West Railway Station 大跨度空间钢析架和双向正交钢管桁架结构。
施工技术 2010年1月 36 CONSTRUCTION TECHNOLOGY 第39卷第1期 厦门翔安海底隧道开挖围岩应力与位移监测分析 余永强1,熊芳斌,李华茂2 (1.河南理工大学土木工程学院,河南熊作454000; 2.南水北调中线于线工程建设管理局河南直管建管都,河南集作454850) [摘要]针对海底隧道开挖后的复杂受力状况,采用围岩变形控制理论作为隧道施工工艺的安全控制标准.在厦 门翔安海底隧道的A1标段主隧道F4风化深槽施工现场,埋设应力盒与多点位移计,对隧道开挖后围岩应力与位 移进行测试,分析围岩应力与位移规律的非线性关系,在此基础上对围岩稳定状况做出初步评价,认为工程所采用 的先注浆、后爆破开挖的施工工艺切实可行. [关键词]海底隧道;应力;位移;监测 [中图分类号]U457.2 [文献标识码]A [文章编号]1002-8498(2010)01-0036-02 Monitoring Analysis of Surrounding Rock Stress and Displacement in Xiamen Xiang'an Seabed Tunnel Excavation Yu Yongqiang' Xiong Fangbin' Li Huamao2 (1.Department of Civil Engineering He'nan Polytechnie University Jiaosuo He'nan 454000 China; 2.Construction and Administration Bureau of South to North Water Ditversion Middle Route Projeet Jiaozuo He'nan 454850 China) Abstract:Surrounding rock deformation control theory is adopted as the safety control standard of tunnel construction against the plex stress conditions.In order to measure the surrounding rock stress and displacement after excavation pressure cell and multi-point extensometers are buried in Al section main tunnel F4 weathering deep groove of Xiamen Xiang'an seabed tunnel.The nonlinear relation between surrounding rock stress and displacement is analyzed according to the testing results.Thus stability situation of surrounding rock is initially evaluated.It proves that the construction technology of blasting excavating after pouring is feasible. Key words:seabed tunnel;stress;displacement;monitoring 1工程概况 厦门翔安海底隧道是连接厦门本岛和翔安...
[关键词]地下工程;钢结构;钢管柱;逆作法;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)13-0133-04 Top-down Construction Technology of Basement Steel StructureinXiamenShiqiao Center TangXiangjun,ZhouZhongqiang,Shang Hongjun,Li Qingbin,QinYijun,XuLei (Jiangsu Huning Steel Mechanism Co.,Ld.,Yixing,Jiangsu 214231,China) Abstract:It's difficult to construct in Xiamen Shiqiao Center by conventional construction sequence because of the narrow field and plicated construction conditions.The top-down method ensures the schedule of construction.The bearing supporting frame must rely on the pre-embedded steel pipe columns in the hole-pile.The structural practice indicates that the main structure pleted by four months. This construction methodreduced the human input and the construction cost. Key words:underground; steel structures; steel tubular column;top-down method;construction 1工程概况 厦门世侨中心项目为高层办公楼,占地面积为 3648.71m²,总建筑面积为45552.6m²,其中地下4 层,面积为10077.6m²,地上共27层,面积为 35475m。
2014年5月上 施工技术 第43卷第9期 CONSTRUCTION TECHNOLOGY 123 D0I:10.7672/5j52014090123 卵石层大跨小间距渡线隧道暗挖施工技术* 李润军1 2,廖秋林2,李源潮3,田亮,赵丁鸿1 (1.中国矿业大学(北京),北京100083;2.北京城建设计发展集团股份有限公司,北京100088: 3.中铁第五勘察设计院集团有限公司,北京102600) [摘要]在卵石地层中施工跨度大、间距小、断面多的渡线段隧道,难度很大.通过数值模拟和工程类比,确定了从 大洞向小洞(纵向)、先小洞后大洞(横向)的施工顺序,解决了不同断面、工法的合理过渡及小间距隧道群洞效应; 采用径向注浆方案解决了小间距隧道间土体加固的难题;采取构造梁柱体系、错开破洞及分段拆除临时支撑的方 法,实现了受力合理转换.采取潜孔锤跟管钻进工艺,解决了砂卵石地层打设管棚的难度. [关键词]隧道工程:渡线隧道;卵石地层;暗挖:施工技术 [中图分类号]U231.3 [文献标识码]A [文章编号]1002-8498(2014)09-0123-04 Shallow Mining Method of Large-span Small Spacing Connecting Tunnel in Cobble Layer Li Runjun.2 Liao Qiulin2 Li Yuanchao Tian Liang' Zhao Dinghong (1.China University of Mining and Technology Beijing) Beijing 100083 China; 2.Beijing Urban Construction Design Development Group Co.Lsd.Beijing 100088 China: 3.China Railway Fifth Survey and Design Institute Group Co. Lid.Beijing 102600 China) Abstract:Connecting tunnel construction is quite difficult in cobble layer because it's large-span small spacing and fickle cross section.The construction sequence was finalized by numerical simulation and engineering analogy.It is from large section tunnel to small one longitudinally and from small section tunnel to large one transversally.In this way transitional construction with different sections and technology is suecessfully pleted and multi-cavity effect of small spacing construction is conquered. Radial grouting can solve the problem of soil reinforcement among small spacing tunnel.Reasonable force transforma...
[关键词]预制装配式;混凝土;剪力墙;吊装;绿色施工 [中图分类号]TU741 [文献标识码]A[文章编号]1002-8498(2017)03-0034-04 PrecastMonolithicStereoGarageConstructioninNantong GovernmentAffairsCenter Liu Jiahua',Gong Yonghui² (1.Schoolof CivilEngineering,Jiangsu College of Engineering and Technology,Nantong,Jiangsu 226007,China; 2.CollgefCiilEngineringandEarhScences,TUDefDefehrland 3.Longxin Construction Group Co.,Ltd.,Haimen,Jiangsu 226100,China) Abstract:Nantong Government Affairs Center stereo garage adopts precast monolithic frame shear wall structure system,whose overall prefabricated rate is 52.6%.It uses ‘litte specifications, much bination’design principle to reduce the construction cost,shorten the construetion period,and implement the green construction without outer formwork,outer scaffold,masonry and plastering,which solves the accuracy control technical difficulties of PC ponent assembly and saves operating costs at a later stage of project. Key words:precast; concrete; shear wall;hoists;green construction 装配式混凝土结构是近年来我国工业化发展结构适用于大跨度、大开间工业建筑、写字楼、住 的热点与焦点,随着各地方政府在保障房建设中积宅、停车库等,随着工业化技术日趋成熟,此类建筑 极推进和各项配套政策鼓励与支持,国内装配式混为解决这一难题提供了很好的途径[-]。
施工技术 2017年2月上 30 CONSTRUCTION TECHNOLOGY 第46卷第3期 D0I:10.7672/sgs2017030030 南通政务中心预制装配整体式框架结构体系 立体车库设计* 刘加华1 2,柳海3 (1 江苏工程职业技术学院建筑工程学院,江苏南通226007;2.代尔夫特理工大学土木工程和 地球科学学院,荷兰代尔夫特;3.龙信建设集团有限公司,江苏海门226100) [摘要]结合南通政务中心立体车库案例,对比分析原方案(现浇框架剪力墙结构体系),在原方案基础上进行合理 优化,东区采用预制装配整体式框架现浇剪力墙结构体系组合结构,西区采用预制装配整体式框架结构体系,满 足“少规格、多组合”的设计原则,对立体车库进行P深化设计,符合施工精度控制要求,采用绿色建筑技术,节能 环保,降低运营成本. [关键词]预制装配式;框架;剪力墙;组合结构;深化设计 [中图分类号]TU741 [文献标识码]A [文章编号]1002-8498(2017)03-0030-04 Stereo Garage Design with Precast Monolithic Frame Structure System in Nantong Government Affairs Center Liu Jiahua.2 Liu Hai (1.School of Civil Engineering Jiangsu College of Engineering and Technology Nantong Jiangsu 226007 China; 2.College of Civil Engineering and Earth Sciences TU Delft Delft Netherlands; 3.Longxin Construction Group Co.Lad.Haimen Jiangsu 226100 China) Abstract:Combined with Nantong Government Affairs Center stereo garage case the original scheme which is cast-in-situ frame shear wall structure system is deepened.East area adopts precast monolithic framework and cast-in-situ shear wall structure system posite structure west area adopts the precast monolithic frame structure system which meets the design principle.Green construction with detailed design is applied for energy saving and reducing operation cost. Key words:precast;frames;shear walls;posite structure;detailed design 0引言 排等优点.推广装配式混凝土结构,是实现建筑工 当前,随着建筑业转型升级步伐的加快,建筑 业化的重要途径之一,而工业化建筑又是推动建筑 工业化日益受到关注和重视,国家也大力支持其发 工业化的新动力,国家标准《工业化建筑评价标准》 展,积极出台相应政策扶持,今年国务...
[关键词】广州亚运会;南沙体育馆;钢屋架:预应力;双层轮辐式空间张弦结构;施工技术 [中图分类号]TU758.166 【文献标识码]A[文章编号]1002-8498(2010)08-0087-06 Construction TechnologyforSteel RoofPrestress ofNansha Gymnasium Wu Caiwu,Wen Miancong,Wang Wenling (Guangzhou Xiean Building Engineering Co. , Lad. , Guangzhou, Guangdong 510075 , China) Abstract;The construction technology for steel roof prestress of double-layer spoke-type spatial string structure in Nansha Gymnasium of Asian Games Guangzhou 2010 is indicated in detail. Through analysis on dificulties and keys, a series of technologies are applied, which include the choice of temporary support for steel structure installation,tensioning with level,grade andbatch,synchronous tensioning of steel wire rope with batch, analyzing and controlling the quality and safety of construction by monitoring data. And the application effets are summarized. It is pointed out that the support system using bailey truss is better than full hall support system, and the analysis results by finite element method play an important role in the whole tensioning process. Key words: Asian Games Guangzhou 2010; Nansha Gymnasium; steel roof; prestress; double-layer spoke-type spatial string structure; construction technology 1工程概况 内层每福张弦梁上弦为截面250mmx250mmx 双层轮辐式空间张弦结构钢屋架是近几年发展起10mm的径向钢箱梁,下弦为$5mmx127径向钢丝束 来的一种新型大跨度预应力钢屋架结构形式。
【关键词】隧道工程;干渠;盾构;开挖面;优化 [中图分类号]U455.43[文献标识码】A[文章编号]1002-8498(2015)23-0072-07 StudyonParameterOptimizationofEarthPressureBalance ShieldConstructioninaContractSectionoftheEastMainCanalof South-to-northWaterTransferProjectinBeijing YuanQingwei',Li Lingyi²,Liu Changjian²,Jiang Houting',Gong Qiuming' (1.KeyLaboratoryofUrbanSecurityandDisasterEngineeringofMinistryofEducation,BejingUniversityfTechnology, Beijing 100124,China;2.Beijing MunicipalRod&Bridge Group Co.,Ld.,Beijing 100068,China) Abstract;Based on shield construction of tunnel section of the east main canal of South-to-north Water Transfer project in mixed stratum with fine medium sand and silty clay in Beijing,the construction
conditioning tests of fine medium sand and silty clay are done respectively including additive performance test and indoor soil conditioning test),draws conclusion that the best foam injection ratio of fine medium sand is 8%,the best foam injection ratio of silty clay is 30%,and then the best foam injection ratio of mixed stratum is 30% which is determined based on the different volume of mixed stratum with fine medium sand and silty clay,the value range of excavation face pressure of the shield is 100 ~150kPa by puting optimization of theoretical methods. Key words:tunnels;main canal; shields;excavation face;optimization 1工程概况及地质条件鱼尾刀贝型刀仿形刀 土压平衡盾构区间为北京市南水北调东干渠切刀 配套工程某标段,掘进机机身全长14.085m,开挖直滚刀 径6.2m,盾构刀盘如图1所示,盾构设计参数如表 1所示。
施工技术 2011年2月 78 CONSTRUCTION TECHNOLOGY 第40卷第3期 南昌报业大厦高空钢结构施工技术 郑永康,邓小华2 (1.南品大学建就工程学,江西南品330031:2.南市建设工程质量督,江南330031) [委]南昌报业大屋钢传构“帆”形的装饰道型新颖验特,主委由4根立起的团弧铜箱柱组成,外形尺寸125m 宽21 4m 弧长为141.75m.为减少高空行业和供证容装定位确的盈米,采用“地面分轻、单片预拼、高空总拼 梨”的施工方宗.诚方亲在地面拉利了横向系杆的焊接变够和单拼装尺寸溪差,单片在高空的安装定性好,密 梨定位准确度高,施容金,王期短. [关键词]钢德构:施工:预拼装:高空拼聚 [中图分类暑TU758 [文献标识码]A[章编号]1002-8498(2011)03-0078-03 Construction Technology of Steel Structure of Nanchang Newspaper Building in High Altitude Zheng Yongkang' Deng Xiaohua (1.School of Architectural Engineering Nanchang University Nanchang Jiangxi 330031 China: 2.Projects Quality Superrision Office of Nanchang City Nanchang Jiangxi 330031 China) Abstract:Steel structure decoration of Nanchang newspaper building is novel and distinctive with the sail- shape which poses of four arc box-section columns with height 125m width 21.4m and arc length 141.75m.The method of segment assembly on ground pre-assembly with single truss and integrate assembly at high altitude is adopted for accurate spatial location and reducing high altitude installation working.The method can reduce welding deformation of horizontal rods and assembly dimension errors of single truss and assure good installation stability at high altitude high accuracy for location safe construction and short construction period. Key words:steel structure:construction:pre-assembly:high altitude assembly 1工程概况 141.75m 容装需在主体工程 南昌报业大屋地下2层,地上25层,钢筋混凝封项后进行.由于钢结构造 土框架-剪力墙结构,总建筑面积47935m2.钢结构型的特殊性,择施工方 的装饰遗型星“”形,寓意为“帆”.钢结...