2012年9月下 施工技术 第41卷第373期 CONSTRUCTION TECHNOLOGY 109 大直径碎石桩软土成桩工艺研究 张蓓1,杨晓杰2,刘洋2,马骄2,田弋弘2,李少华2 (1.上海建峰取业技术学晓土木系,上海201900;2.中国矿业大学(北京)力学与建筑工程学院,北京100083) [摘要]采用振冲法和沉管法在低强度软土中施工大直径碎石桩,得到两种工法的施工控制参数,并对碎石桩桩身 进行超重型动力触探检测.结果表明,振冲法和沉管法均可在不固结不排水强度小于15kPa的软土中成桩,振冲 法施工碎石桩密实度高,均匀性较差,成桩长度不宜大于10,沉管法施工碎石桩密实度较高,均匀性较好,成桩长 度可达14~15m. [关键词]地下工程:柱基础:碎石柱;振冲法;沉管法;动力触探试验 [中图分类号]TU753.1;TU447 [文献标识码]A [文章编号]1002-8498(2012)18-0109-04 Construction Technology of Large-diameter Gravel Piles in Soft Soil Zhang Bei' Yang Xiaojie2 Liu Yang2 Ma Jiao2.Tian Yihong? Li Shaohua2 (1.Civil Engineering Department Shanghai Jianfeng College of Career Technology Shanghai 201900 China; 2.School of Mechanics Cisil Engineering China University of Mining Technology Beijing 100083 China) Abstract:Based on constructing gravel piles in soft soil the controlling parameters of vibroflotation piles and sinking pipe piles are obtained.The quality of piles are tested with dynamic penetration tests.The test results show that both the two kind piles can be formed in soft soil with less than 15kPa un- consolidation and undrained strength.Both of the two kinds of gravel plies have high density.The uniformity of vibroflotation gravel piles is poorer than piles constructed with sinking pipe method and the length of vibroflotation gravel plies should not be longer than 10m.However the length of vibroflotation gravel plies can reach 14-15m. Key words:underground;piles;gravel piles;vibroflotation method;sinking pipe method;dynamic penetr...
2013年7月上 施工技术 第42卷第13期 CONSTRUCTION TECHNOLOGY 33 D01:10.7672/sgjs2013130033 大直径圆形钢板桩围堰施工技术 李仁民,刘伟2,陈晓凤1 (1.东南大学岩土工程研究所,江苏南京210096;2.中交三公局第二工程有限公司,北京100006) [摘要]钢板桩围堰由于施工周期短、综合成本低等特点,越来越多的深水基础开始采用.徐明高速淮河特大桥2 号承台为直径26.0m的圆形承台,采用圆形钢板桩围堰.结合该工程实例介绍了钢板桩的打拔、腰梁安装、钢板桩 锁口漏水处理、硬黏土层湿挖、封底混凝土浇筑等大直径圆形钢板桩围堰施工成套技术. [关键词]桥梁工程;承台;钢板桩;围堰;施工技术 [中图分类号]U443.1 [文献标识码]A [文章编号]1002-8498(2013)13-0033-05 Construction Technology of Large-diameter Circular Steel Sheet Pile Cofferdam Li Renmin' Liu Wei Chen Xiaofeng' (1.Institute of Geotechnical Engineering of SEU Nanjing Jiangsu 210096 China: 2.The Second Engineering Co.Lad.of the CCCC Third Highway Engineering Co.Lid.Beijing 100006 China) Abstract:Because of short construction period and low cost steel sheet pile cofferdam are more and more applied in deep-water foundations.The round pile cap of Xuzhou-Mingguang Highway Huaihe River Bridge No.20 pile cap has diameter of 26.0m using a circular steel sheet pile cofferdam.Combined with the engineering practice this paper introduces the construction of the steel sheet pile installation of cofferdam leakage treatment of locking steel sheet pile pouring of the back cover of concrete and other plete sets of technology for large-diameter circular steel sheet pile cofferdam. Key words:bridges;pile cap;steel sheet pile;cofferdam;construction 目前水中承台施工可以采用双壁钢围堰、锁口度达16.9m(封底混凝土3.0m).经过方案比选确 钢套箱、双排钢板桩围堰和钢板桩围堰等方案.例定承台基坑开挖采用无内支撑的圆形钢板桩围堰, 如钱江四桥[11、七浦塘大桥2、襄樊汉江五桥[3等围堰直径为31.64m 钢板桩桩长为27m 坑内没有 围堰均采用双壁钢围堰方案;青岛海湾大桥、集设置水平内支...
施工技术 2011年1月 28 CONSTRUCTION TECHNOLOGY 第40卷第2期 大明宫丹凤门遗址保护展示工程钢结构施工技术 马哲刚,简文华,邵建明,周保平 (中建就股份有限公司,北京100037) []丹凤门遗丝保护展示工程主体采用大跨度门式刚架局部粮案夹层的结构形式,以实现利用大跨度展厅对 址皮文新进种原位展示的功能.对造址保护的需及仿古建筑的特点,介造址在施工期间的原保护方 法.对仿古建筑中斜设里的铜构件地脚栓的馆设方法、件的领团定施、超高瓶面大跨度铜构件的容 梨方法及钢构件吊装流水技术等进行阐. [关键词]钢构:份古建就:遗保护:大跨度 [中分类暑]TU754.2 [文献标识弱]A [交章编号]1002-8498(2011)02-0028-03 Construction Technology on Steel Project in Danfeng Gate Display of Daming Palace Ruins Park Ma Zhegang Jian Wenhua Shao Jianming Zhou Baoping (China State Construction Engineering Co.Lad.Beijing 100037 China) Abstract:The large-span portal steel framework with local frame of sandwich structure is adopted in main body of Danfeng Gate display project which can utilize large-span show room for acplishing the function of ruins returned normal position.It focuses on the requirement of ruins protection and characteristics.Besides the method of normal position protection embed method of anchor bolt for steel structure slope fixed measures of steel-member installation of large-span steel member with super high section and steel member hoisting flow eonstruetion technology are discussed. Key words:steel structure:archaized architecture:site protection:large span 1工程概况 2工程特点及雅点 丹凤门遗保护展示工程是在唐朝皇家客 1)丹凤门为大型仿古建筑,为满足仿古建筑造 殿—一大明富的正南门(即丹凤门)的原址上进行型要求,主体钢柱均采用倾斜设置,单根钢柱长约 复原建造的份古建筑,该工程由主城棒和位于城楼15.6m 重约191,倾角15°,在施工过程中空南定位 两侧的城墙组成,其主体为门式刚架结构.其中主 难度大(见图1). 城楼设计为3层,1层主要为对原遗检发屈后进行 原位展示,2展为参观通廊,3层为多功能大厅,建筑 总高33.440m工程东西长213m 南北宽39.4m 两侧城楼内部为管理用房.工程总建筑面积 11474.2m2. ...
2014年4月下 施工技术 第43卷第8期 CONSTRUCTION TECHNOLOGY 41 D0I:10.7672/5j52014080041 大截面穿结构梁多段钢拉杆施工与监测技术 梁恒越,梁红玉,邓飞,刘健博 (中建一局钢结构工程有限公司,北京100000) [摘要]南京苏宁易购总部基地项目A区悬挑结构采用3根UU650型d200mm钢拉杆进行拉接,结合以往钢拉杆 施工经验及钢拉杆的生产能力,确定钢拉杆加工形式、连接节点,采用“让钢拉杆提前参与受力,结构荷载逐级缓 慢加载”的施工方法,免除张拉步骤、过程监测,最终完成施工. [关键词]钢结构;钢拉杆;穿结构梁;加载;过程监测 [中图分类号]TU757.3 [文献标识码]A [文章编号]1002-8498(2014)08-0041-05 Construction and Monitoring Technology for Steel Tensioning Rod Through Large-section Structure Beam Liang Hengyue Liang Hongyu Deng Fei Liu Jianbo China Construction First Division Steel Structure Engineering Co.Ltd.Beijing 100000 China) Abstract:The area A cantilever structure in Nanjing Suning Yigou Headquarter project connects the main steel structure by three UU650-type 200mm steel tensioning rods.Combing with construction experience and production capacity of steel tensioning rods the production form and connection joint for steel tensioning rod are determined.Taking a construction method of steel tensioning rod loading in advance structure loading gradually and slowly with process monitoring can avoid tensioning steps to plete construction finally. Key words:steel structures;steel tensioning rod;through structure beam;loading;process monitoring 1工程概况 南京苏宁易购总部基地项目A区悬挑钢结构 钢拉杆穿 由劲性结构和大型多层悬挑钢结构共同组成,其中 结构梁 设置 悬挑结构范围内地下2层,地上6层,最大悬挑长度 为18.423m 底面距离地面10.65m 最大檐高 30.227m 最大悬挑层数为4层,悬挑结构建成后整 体荷载约24000kN 钢材型号为Q460GJ且最大板 厚100mm 整体采用3根UU650型d200mm的钢拉 杆拉接.此种型号钢拉杆为国内现有最大截面钢 拉杆,且首次在建筑中穿结构梁应用,钢结构的安 10.65m 装精度比同级钢结构要求高,且此施工为各大工程 局首例,施工难度大...
2010年6月 施工技术 第39卷第6期 CONSTRUCTION TECHNOLOGY 59 大型钢箱梁焊接工艺及变形控制 米凯华1,欧阳运华2 (1.武警水电第二总队八支队,福建厦门361009;2.武拳水电第二总队,江西南器330096) [摘要]基于潮州供水枢纽工程闸坝事故,分析焊接原理,介绍检修门箱形钢梁焊接工艺,包括下料、单件制作、拼 装等.并对方便快捷的新型焊接工艺优缺点进行分析,提出控制箱梁变形和变形矫正的措施,有效解决了箱梁焊 接变形控制问题.结果表明,该焊接工艺提高了箱梁制作速度,保证了箱梁制作质量和施工安全. [关键词]焊接工艺;变形控制;箱梁 [中图分类号]TV73 [文献标识码]A [文章编号]1002-8498(2010)06-0059-02 Welding Technology and Deformation Control of Large Steel Box Girder Mi Kaihua' Ouyang Yunhua2 (1.No.8 Detachment No.2 Hydropowver Force of Armed Police Xiamen Fujian 361009 China; 2.No.2 Hydropower Force of Armed Police Nanchang Jiangxi 330096 China) Abstract:Based on the accident of water-supply hub dam in Chaozhou the welding principles are analyzed.The welding technologies of steel box girder in maintenance gate are introduced such as cutting production of single member assembly and so on.Besides advantages and disadvantages of new convenient welding technology are analyzed.Measures are put forward to control and rectify the deformation of box girder which can effectively solve the control on welding deformation of box girder. The results show that the welding technology can speed up the production of box girder furthermore quality and construction safety of box girder are ensured. Key words:welding technology;deformation control;box girder 在水工钢结构及建筑钢结构中,箱梁是应用较为上,同时为避免构件因焊接收缩变形而影响最终外形 普遍的钢结构形式.大型箱梁往往设计为重型结构尺寸,下料时板料长度增加2mm余量. 件,其外形尺寸大,强度较高,稳定性好,是承担外部荷 箱梁焊缝坡口形式设计中,在保证焊接质量的前 载的主要部件,但同时箱梁尺寸精度要求高. 提下,选用焊缝填充金属少的坡口形式对减小焊接收 1工程概况 缩变形有利.此次选择翼板、腹...
2017年6月下 施工技术 第46卷第12期 CONSTRUCTION TECHNOLOGY 71 D0I:10.7672/8js2017120071 大型莲花旋转升降宗教剧场舞台施工关键技术 孙晓阳 (中国建筑第八工程局有限公司总承包公司,上海200135) [摘要]南京牛首山佛顶宫大型莲花全自动升降旋转舞台工艺设计和机械设备的配置满足了宗教剧场的演绎要 求,同时兼顾其他类型的演出.其舞台的成型工艺、空间定位及安装过程复杂.工程中所使用的钢丝绳传动升降 舞台、舞台环吊装置、舞台专用低噪声卷扬机、莲花瓣同步升降控制系统、水舞台不锈钢板无渗拼接技术、效果处理 等技术,提升了专业宗教剧场舞台设计和施工水平. [关键词]旋转提升:钢结构:安装:施工技术 [中图分类号]TU758.1 [文献标识码]A [文章编号]1002-8498(2017)12-0071-05 Construction Technology of Large Lotus Rotary Lifting Religious Theatre Stage SUN Xiaoyang General Contract Engineering Company China Construction Eighth Engineering Division Co.Ltd.Shanghai 200135 China) Abstract:Large lotus rotary lifting stage design and equipment configuring of Buddha Palace can meet the requirement of religious theatre and other shows.The molding technology location and installation process are plex.The key technologies such as wire rope transmission lifting stage stage ring hanging device low noise winch lotus synchronous lifting control system stainless steel plate seamless splicing technology effect treatment etc are applied in the engineering which improve the design and construction technology of religious theatre stage. Key words:rotary lifting;steel structures;installation;construction 1工程概况 械中无处不体现着佛教文化.莲花机械舞台直径 近年来,随着国家经济的持续发展、人们物质长达38,整个机械舞台可以升降、旋转、打开、合 生活水平的不断提高,旅游业发展迅速,以宗教文 拢,属于专业定制的宗教演艺舞台,舞台的成型工 化为主题的朝圣和旅游场所受到越来越多人的欢 艺、空间定位及安装过程复杂,是创新科技和艺术 迎,传统文化(儒、释、道、休闲文化)与旅游文化相 文化的智慧结晶.如图1所示. 结合的场所建设成为一种特色.作为宗教场所重 要功能设备的专业化剧场舞台,需要满足演出、会 议、展览等多种功能;不断复杂化、智能化、异形化、 大型化,也给施工技术的创新与...
[关键词]隧道工程;沉管法;连接段;端钢壳;混凝土支撑;防水 [中图分类号]TU7;U455 [文献标识码]A [文章编号〕1002-8498(2012)18-0113-04 KeyConstructionTechnologyofMainStructureforConnection SegmentinLargeImmersedTunnel (China Railway Eighteen Bureau Group Fise Company, Tianjin 300456, China) Abstract;Immersed method is adopted in construction of Haihe River Tunnel of Central Road in Binhai New Area, Tianjin.The connection section of the immersed tunnel is the main connection section for the immersed tube in the water and the land. Thus the foundation excavation is constructed in soft soil adjacent to river with large depth. Moreover the construction includes tube sections undocking, supports demolition and steel coffrdam construction, as well as the final joint construction and the supports re- installation. Key construction technology of main structure for connection segment in large immersed tunnel is researched to solve the dificulties of PC cables, end steel shell and end waterproof sealing doors in limit space of foundation excavation with several supports. The mentioned technology ensures construction quality and safety of the main structure. Key words:tunnels;immersed method;connection segments; end steel shells; concrete supports; waterproofing 天津市滨海新区中央大道海河隧道工程为天 3层结构,其中地下3层为行车通道,为“两孔三管 津市重点工程,属于城市主要干道,工程全长 廊”形式,地下2层主要为综合管廊、市政管线和设 4.2km,其中穿越海河255m,采用沉管工艺施工。
[关键词】隧道工程;沉管隧道;干坞;钢管桩 [中图分类号]TU473;U459.5【文献标识码】A[文章编号】1002-8498(2013)09-0020-04 Construction of AxisDry-dock in Large Immersed Tunnel Zhang Xingmei (The Sixth Engineering Division of China Railway 18th Bureau Group,Tianjin 300222, China) Abstract;The construction of Tianjin Haihe River Tunnel, which is the first large immersed tunnel in high seismic regions in China, adopted the axis dry-dock construction technology after construction scheme parison and consideration of the hydrologic geology condition and project situation.By research to the construction of the locking steel pipe piles of the axis dry-dock of the large immersed tube tunnel, the construction diffculties involved with large-diameter locking steel pipe piles were resolved, including hole-forming,waterproofing and hoisting.The construction process and key technologies for locking steel pipe piles are introduced in detail. The application results show that the technology of axis dry-dock construction technology is economic and reasonable. Key words:tunnels; immersed tunnel; dry-dock; steel pipe pile
1工程概况的南运河、漳河及卫河组成。
[关键词】隧道工程;沉管法;暗埋段;防水;施工缝;变形缝 【中图分类号】TU7:U455[文献标识码]A[文章编号】1002-8498(2012)18-0121-04 WaterproofingTechnologyofMainStructureforBuried Segment of LargeImmersed Tunnel Xiao Ganggang (ChinaRaiway EigheenBureu Group FieComany,Tianjin300456,China) Abstract: Waterproofing of underground engineering has been a topic of concern and it is the mon quality defects points in operation. Based on the construction of Haihe River Tunnel of Central Road in Binhai New Area, Tianjin, which is the first tunnel in high seismic intensity zone of China, the waterproofing design and construction for key joints are summed and researched including construction joints,deformation joints,surrounding structure crossing waterproofing layers and main structure wrapping waterproofing membrane. Key words:tunnels; immersed method; buried segment; waterproofing; construction joints; deformation joints
天津市中央大道海河隧道为天津市重点工程,2355m,施工规模大,防水施工意义重大,其暗埋段 属于城市主要干道,工程全长4.2km,其中穿越海河主体结构防水横断面如图1所示。
[关键词】钢结构;施工过程;监测;模型修正;评估 [中图分类号】TU393 【文献标识码】A [文章编号】1002-8498(2015)02-0068-07 TheResearchStatus ofConstructionMonitoringSystemin Large and ComplexSteel Structures LuoYongfeng',Ye Zhiwu',Wang Lei² (1.School of Civil Engineering,Tongji Universty ,Shanghai200092,China; 2.The Architectural Design and Research Institute of TongjiUniversity,Shanghai200092,China) Abstract;In order to keep the safety and smooth going of construction process, it is essential and important to conduct construction control.Construction monitoring is the key technology of the construction control system and the research contents of construction monitoring include improvement and development of monitoring instruments,monitoring technology,the determination method ofmonitoring parameters, the arrangement method of measuring points, data process method,model updating technology and early warning and assessment system. This paper introduces the development of constructiontheory and technology and theresearch status,and then pointsout the existing problems and the solving methods.Finally,some hot research subjects about construction monitoring system are summarized. Key words:steel structures; construction processing; monitoring; model updating; assessment 0引言 研究,具有重要的理论意义和实用价值,也是目前 随着社会经济的发展,体现现代建筑艺术的大 迫切需要研究并及时获得成果的热点课题。
[关键词】地下工程;水电站;大型酮室;锚索;施工技术 [中图分类号】TU753[文献标识码】A[文章编号】1002-8498(2017)01-0116-03 Key Technology Research and Application for Large Underground CavernAnchorCableConstruction Qi Jieyi',Wu Haitao', He Mingwu² (1.China Gezhouba Group Three Gorges Construction Engineering Co.,Ltd.,Yichang,Hubei 443002,China; 2.China Three Gorges Projet Corporation,Bejing 100038,China) Abstract : There are a mass of prestressing cables in the arch-crown and side wall of Wudongde left bank underground powerhouse. The application of traditional anchor cable construction method in drilling, putting anchorrope into the anchor hole is large interference,time-consuming,laborious and with high safety risk. The authors solved the problem by improving the equipment and innovating the products. Application of anchor cable construction of large cavern key technology can efectively improve construction efficiency and quality, reduce the construction cost and security risk. Key words:underground; hydropower stations; large underground cavern; anchor cables; construction 1工程概况 锚索长度33m/36m,锚索钻孔方向均垂直于开挖 金沙江乌东德水电站是金沙江下游河段(攀枝面,钻孔直径均为165mm。
施工技术 2015年7月下 30 CONSTRUCTION TECHNOLOGY 第44卷第14期 D0I:10.7672/8js2015140030 多腔体人字形组合柱加工技术 高如国,周喜,徐丹 (中建钢构江苏有限公司,江苏靖江214532) [摘要]天津现代城(二期)A地块B区项目为超高层核心筒-框架钢结构,酒店区各轴线之间的钢柱支撑于分岔的 人字形组合柱上,该人字形组合柱板厚大、腔体多、焊缝纵横交错,受力及变形均非常复杂,同时又是支撑整个上部 结构的关键,因此,该人字柱的加工质量、制作精度尤为重要.介绍了人字形组合柱的加工制作工艺,并从下料、组 装、焊接等工序进行了详细的阐述. [关键词]高层建筑;组合柱;支撑;多腔体;加工工艺 [中图分类号]TU758.16 [文献标识码]A [文章编号]1002-8498(2015)14-0030-03 Processing Technology of Multi-cavity Herringbone Column Gao Ruguo Zhou Xi Xu Dan China Construction Steel Structure Jiangsu Co.Ltd.Jingjiang Jiangsu 214532 China) Abstract:Tianjin Xiandai City(Phase I)lot A area B project is a super high-rise building using core tube-steel frame structure.The steel columns between each axis of the hotel zone are supported by the herringbone columns.The herringbone columns are multi-cavity and use thick plates whose stress features and deformation are very plex.As the key parts of the whole building the quality and accuracy of the herringbone columns are especially important.This paper elaborates the columns' fabrication process from blanking assembly and welding ete. Key words:tall buildings;posite columns;supports;multi-cavity;processing 1工程概况 天津现代城(二期)A地块B区项目总建筑面 积约25万m2 用钢量约3万t 主要由办公、酒店公 寓2幢超高层塔楼及商业裙房组成,其中办公楼地 下5层,地上68层,高338m;酒店地下5层,地上48 层,高209.65m 建成后将成为天津市地标性建筑. 该项目为超高层核心筒框架钢结构,酒店区各轴线 之间的钢柱支撑于分岔的人字形组合柱上,该人字 形组合柱板厚大腔体多、焊缝纵横交错,受力及变 形均非常复杂,同时又是支承整个上部结构的关 键,因此,该人字柱的加工质量、制作精度尤为重 要.本文将从优化结构类型、制定合理的装焊顺 序、加强制作过程中的焊接控制等方面,按照下料、 图1工程三维效果 组装、焊接等工序详细阐述多腔体人字形组合柱的 Fig.1 3...
施工技术 2010年10月 108 CONSTRUCTION TECHNOLOGY 第39卷第10期 多层木结构古建筑榫卯节点拼装技术研究 张少华,姬东2,朱俊2,覆仲明2 《1.苏州工业园区科技发展有限公司,江苏苏州215131; 2.苏州狮山建容装工程有限公司,江苏苏州215131) 要]在木传构古建筑中,建筑的损坏多数由样卵节点的破怀而引起的,园此木梅之间的和豆结至关童要, 传洗的施工方法是先确定节点方式再进行拼辈施工,以致不间的节点梅造给施工带集了困难.大阁程并没有 一味的遥束传镜,而是根据诚工程构造,先确定拼梨汇样的施流程,再根据不同构件的受力要,选相应的样 卵结构并德合现代传构技术和工艺,进样脱方便施工,又能提高构件的承我能力和整个木德构体系的定性. [芙键词]木构古建筑:拼装:样卵节点 [中受分类]TU759 [文披标识]A [立章编]1002-8498(2010)10-0108-04 Research on Installation Technology of Tenon and Mortise Joint in Multi-floor Timberwork Ancient Building Zhang Shaohua' Ji Dong2 Zhu Jun2 Qu Zhongming? (1.Suzhou Industrial Park of Science and Technology Derelopment Co.Lad.Suzhou Jiangsu 215131 China: 2.Suzhou Erjian Construction Group Co.Lsd.Suzhou Jiangsu 215131 China) Abstract:The damages of timberwork ancient building is often caused by damages of tenon and mortise joints.So the connections of timber ponent are very important.Traditional construction technology is to determine the joint form and then to install the joint.Because of different joint forms the traditional construction teehnology is very diffieult.But the construetion of Mantra Pavilion breaks the routine. According to the construction strueture the construction sequence of tenon and mortise joint installation is determined.Based on the bearing capacity of different members the corresponding tenon and mortise structure are bined with the modern technology which ensure the bearing capacity and stability of timberwork. Key words:timberwork ancient building...
[关键词]公路工程;路面;沥青玛蹄脂碎石路面;多孔玄武岩;上面层 [中图分类号]U416.2[文献标识码]A[文章编号〕1002-8498(2015)11-0074-04 StudyontheApplicationofPorousBasaltinUpperLayerof SMA Pavement Xu Ling,Li Wen (The Third Engineering Co.,Lad.of theFirst Highway Engineering Bureau of CCCC,Beijing 101102,China) AbstractPorous basalt aggregateisselected forSMA-13upper layer structure inNo.31contract section pe se q sdp nd d sujo construtionncldingmixdesignmixing,ransportationandpavingollingnconstrutionummaiz the construction process parameters and control points in the application of porous basalt in upper layer of SMA pavement. Key words;road construction;pavements;SMA pavements;porous basalt;upper layer 1工程概况表1粗集料试验结果 湖南醴茶31标路面上面层为SMA-13SBS改性Table 1Test results of coarse aggregate 沥青混凝土,路面宽11.25m,厚4cm,全长单幅试验项目各12号技术要求结论 58.2km,碎石为湖南省攸县多孔玄武岩,细集料为 玄武岩机制砂,木质素纤维为德国进口的颗粒状纤压碎值/%17.5-≤20.0合格
表观相对密度2.8652.876 维。
施工技术 2016年7月上 130 CONSTRUCTION TECHNOLOGY 第45卷第13期 D0I:10.7672/5js2016130130 多向可调节柔性连接式石材幕墙施工技术 杨军 (中铁建设集团有限公司,北京100040) [摘要]介绍了一种新的异形曲面石材幕墙施工技术,该技术运用多向可调节柔性背栓的多向可调节性,提高了异 形曲面石材的施工效率,异形曲面石材幕墙的外立面效果得以更好呈现. [关键词]幕墙:石材幕墙;柔性连接;施工技术 [中图分类号]TU767 [文献标识码]A[文章编号]1002-8498(2016)13-0130-05 Multi Direction Adjustable Connection Stone Curtain Wall Construction Technology Yang Jun China Railway Construction Group Co.Ltd.Beijing 100040 China) Abstract:This paper introduces a new type of surface stone curtain wall construction technology the technology used to adjust the flexible back bolt of the multi direction can be adjusted improved the construction efficiency of special-shaped curved surface stone irregular curved surface stone curtain wall facade effect can be better. Key words:curtain wall;stone curtain wall;flexible connection;construction 0引言 端开长条孔,通过不锈钢螺栓与竖龙骨连接.横龙 为解决传统异形曲面石材幕墙施工方法施工骨一端与角钢转接件焊接,中部及另一端用不锈钢 工期相对较长、施工作业条件约束较多、施工成本 螺栓与开长条孔的角钢转接件连接.通过竖、横龙 较大等难题,通过采用多向可调节柔性连接式异形 骨的柔性连接,最大程度避免石材幕墙龙骨因气温 曲面石材幕墙施工技术,摆脱了异形曲面石材幕墙 变化较大而产生变形,从而保证石材幕墙的安全性 对龙骨安装的高精度依赖,实现了石材单元的方向 及整体效果.异形曲面石材采用多向可调节柔性 可调,起到了提高工作效率、降低工程成本和提高 连接背栓结构通过石材挂件与横梁固定.多向可 板材安装质量的良好效果. 调节柔性连接背栓样式如图1所示. 本技术其核心工序为运用多向可调节柔性连 接式异形曲面石材幕墙施工技术对异形曲面石材 幕墙的立面图和效果图进行重新设计,绘制出满足 图1多向可调节柔性连接背栓 该技术要求的龙骨布置图和石材排版图,再进行现 Fig.1 Flexible connection back bolt 场龙骨安装和石材加工,通过特制的多向可调节柔 性连接式背栓实现龙骨和石材连接的技术. 多向可调节柔性连接背栓不但可以进行三维 1工艺原理 尺寸的调节(见图2),还可以全方位任意角度实现 多向可调节柔性连接式异形曲面石材幕墙在 石材板面与龙骨的柔性连接,而且还能吸收不同因 土建结构上预置埋板,埋件上焊接钢角码,用螺栓 素引起的变形应力.多向可调节柔性连接式石材 将[8竖龙骨固定,...
2015年9月上 施工技术 第44卷第17期 CONSTRUCTION TECHNOLOGY 29 D0I:10.7672/sgjs2015170029 复杂空间位置大尺寸拱肋节段直接起吊方法 张俊娟,李旭2 (1.杨凌职业技术学院交通与测绘工程学院,陕西杨凌712100; 2.中铁大桥局股份有限公司设计分公司,潮北武汉430050) [摘要]某钢箱拱结构中拱肋节段存在尺寸大、三向倾角的特点,采用缆索吊机施工时需完成节段翻身、空间角度调 整等过程.在对比总结已有起吊方法优缺点的基础上,改进缆索吊机的吊具及辅助部件,以使其适应空间角度调整 的需要,形成了适用于空间位置复杂的节段直接起吊方法.经验算,设计出的吊点、吊带符合相关规范的要求. [关键词]桥梁工程;拱桥;钢箱拱结构;吊装;应力分析;施工技术 [中图分类号]U445.4 [文献标识码]A [文章编号]1002-8498(2015)17-0029-04 Directly Hoisting Method Suitable for Large Size Arch Rib Segments with Complex Spatial Position Zhang Junjuan' Li Xu2 (1.School of Transportation and Surveying Engineering Yangling Vocational and Technical College Yangling Shaanxi 712100 China:2.Design Branch China Railway Major Bridge Engineering Co. Lad. Wuhan Hubei 430050 China) Abstract:Because of large size and three direction dip features of arch rib segment in one steel box arch structure the process of turning segments adjusting space angle and so on should be pleted by construction of cable crane.Based on the parison of advantages and disadvantages of existing lifting method sling and auxiliary ponents of cable crane are improved to make them meet the requirement of space angle adjustment and the directly hoisting method suitable for segments of plex spatial position is formed.The designed hanging point and sling are in accordance with relevant specification requirements by checking. Key words:bridges;arch bridges;steel box arch structure;hoists;stress analysis;construction 0引言 竖向 研究桥梁拱肋的截面形式为大尺寸钢箱,总体...