【关键词]景观塔;施工技术;仿真分析;临时支撑;塔式起重机 【中图分类号】TU758[文献标识码】A[文章编号〕1002-8498(2015)10-0105-03 Key Construction Technology and Simulation Analysisfor aLandscapeTower ZhuFang,WangAnxin,FanYunpeng,ZhangQian,WangDalei (China Construction Sixth Engineering Bureau Co.,Ltd.,Tianjin 300451,China) Abstract:A landscape tower posites of tower basement and tower body.This paper mainly introduces key construction technologies and construction process simulation analysis. During installation process, by scheme optimization of the construction steps of the tower basement,four temporary supports are saved.During tower basement installtion,every construction step needs not toberesearched,theworst condition on structure and the temporary supports can be found by theory research to improve working effect.The research results show that the load and deformation of the structure and load capacity's support are very small,the construction is safe.And the attach force of the tower crane has small influence on the structure integrate inter force.
1工程概况柱内灌注C40混凝土,其余钢柱为箱形钢柱,不灌 景观塔作为一种形象突出甚至代表性的构筑注混凝土。
2016年2月下 施工技术 第45卷第4期 CONSTRUCTION TECHNOLOGY 115 D0I:10.7672/sgis2016040115 某既有建筑隔震加固施工技术 苏云辉,王永明1,高翔,马新正2 (1.新疆建筑科学研究院有限贵任公司,新疆乌鲁木齐830054; 2.中建新疆建工集团第一建筑工程有限公司,新疆乌鲁木齐830000) [摘要]以乌鲁木齐市某办公楼隔震加固工程施工实例为例,对既有建筑采用隔震加固的施工技术进行研究.介 绍了实例中通过前期设计及施工准备、隔震支座安装、结构梁板柱加固、支撑卸荷、框架柱切割和拆除、隔震支座预 埋板施工、隔震支座安装、上下支墩施工及沉降观测等实际施工过程,得出了经隔震加固后,可以实现地震作用力 降低1度的设防目标. [关键词]既有建筑;加固;隔震;施工技术 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2016)04-0115-03 Isolation Strengthening Construction Technology for an Existing Building in Urumqi Su Yunhui' Wang Yongming' Gao Xiang' Ma Xinzheng (1.Xinjiang Research Institute of Building Sciences LLC Urumqi Xinjiang 830054 China; 2.Xinjiang Construction Engineering Group First Construction Co.Ltd.Urumgi Xinjiang 830000 China) Abstract:For the construction of isolation strengthening of an office building in Urumqi as an example authors introduce construction technology of isolation strengthening for the existing building.By some construction process introduction such as previous design and construction preparation isolation bearing installation beam and floor and column strengthening temporary support unloading the existing building is made realization of decrease one degree fortification objects of seismic protection. Key words:existing buildings;strengthening;isolation;construction 1工程概况 1.2隔震设计概况 1.1改造前状况 本工程共布置34套橡胶隔震支座,其中,铅 乌鲁木齐市某办公楼地处市中心商业区,建筑 芯橡胶支座22套(LRB500为9套、LRB600为13 面积为4960m2 原建筑等级为三级,为一般框架结 套),普通叠层橡胶支座12套(LNR500为5套、 构,钢筋混凝土独立柱基础.该建筑南北朝向,东 LNR600为3套、LNR700为4套),橡胶支座直径...
[关键词]桥梁工程;摩天轮;施工过程;关键杆件;有限元分析;应力;监测 [中图分类号]U445 [文献标识码]A [文章编号]1002-8498(2016)24-0071-04 Construction StressMonitoringand Analysis of Non-spoke-type GiantWheel Yu Liu',Zhang Hong²,Wang Dalei (1.China Construction Sixth Engineering Division Co.,Lad.,Tianjin 300451,China; 2.School of CivilEngineering,Hebei University of Technology,Tianjin300401,China) Abstract:The construction of some non-spoke-type giant wheel is calculated and simulated by Midas Gen finite element analysis software.According to the divided engineering conditions,the stress statement of key ponents is analyzed and calculated by ‘activating’‘inactivating'unit. In order to ensure the safety in the process of construction,a special monitoring program for key ponents is stroked out,and the stress of them in the process of construction and unloading is monitored, then pared the calculated values withmonitoring values.The results showed that the stress values of simulation putation agreed with the monitoring values very well,it proved that the method of construction and simulation is right,the construction process is safe. Key words:bridges;giant wheels; construction process;key ponents;finite element analysis; stress;monitoring 1工程概况 本文中涉及的无轴式摩天轮如图1所示,它是 采用轮桥合一的设计理念,承台基础为轮桥共用。
2016年8月下 施工技术 第45卷第16期 CONSTRUCTION TECHNOLOGY 43 D0I:10.7672/8js2016160043 某房屋抬升纠偏施工期结构形态监测系统的 实现与应用研究 汪学清1,乔胜利,马焖1,胡德俊1,许哲东1,姚建平2,郭增强2 (1 中图矿业大学(北京)力学与建筑工程学院,北京100083; 2.中国铁送科学研完院铁送建研完所,北京100081) [摘委]房屋指升纠编在纠偏工程中比较少见,施工工艺也比较直杂,并各个施工流程控制求也比较严格, 此施工过程中息样保证房屋结构的形态线性与容全和及时掌房屋的结构奇对整个施工过程的容全来说具有 重要意义,如何在指升过程中保证楼房沉降部分蒋步依夏是整个工程成功的关键.采用2套动化监测统和传 说监测技术手篮,并将其所测得的结果进行了对比分析,研完不同监测手疆所测据的精确性尚可露性. [美键词]蒋升:纠偏:沉降;动化;监测系说 [中图分类号]TU472.99;TU746.3 [文献标识码]A[交章编导]1002-8498(2016)16-0043-05 Research on the Realization and Application of Structural Monitoring System for One Building Lifting-rectification Under Construction Wang Xueqing' Qiao Shengli' Ma Jiong' Hu Dejun' Xu Zhedong' Yao Jianping2 Guo Zengqiang (1.School of Mechanics Civil Engineering China University of Mining Technology Beijing 100083 China; 2.Railway Construction Institute of China Academy of Railway Sciences Beijing 100081 China) Abstract:The building lifting rectification is not mon to see in the rectification as well as plicated in the construction and the construction process is controlled strictly so the way of which to evaluate linear form and its safety and to master configuration state of the building in time are of great signification for the whole process of construction as well as to ensure the settlement of building lifting steady is the key to success.Two sets of automatic monitoring system is used and so do the traditional monitoring technology means.Besides the measured results were pared and analyzed in ad...
施工技术 2011年3月上 72 CONSTRUCTION TECHNOLOGY 第40卷第336期 某悬挑斜置结构模板支架方案对比分析 陈佳佳,孟少平,冯英洁,王永泉2 (1.东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096; 2.河海大学水利水电学院,江苏南京210098) [摘要]以位于合肥的渡江战役纪念馆为工程背景,对其外悬挑巨型船头倾斜结构的模板支架方案进行研究.介 绍了其工程特点与难点,针对该工程存在的外形高大,悬挑突出,模板支架承受水平推力较大等问题,提出了4种 模板支架方案,从施工难度、施工工期、工程造价安全性等方面,对各方案进行详细闸述,并对比分析了各自优劣 性,工程模板支架方案的最终确定需综合考虑各项因素,最后对模板支架的搭设提出了合理化的施工建议. [关键词]悬挑斜置结构;模板支架;方案对比;施工安全 [中图分类号]TU745;TU731.2 [文献标识码]A 【文章编号]1002-8498(2011)05-0072-04 Comparison of Formwork Support Programs for an Oblique Cantilever Structure Chen Jiajia' Meng Shaoping' Feng Yingjie' Wang Yongquan2 (1.Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education Southeast University Nanjing Jiangsu 210096 China; 2.Water Resources and Hydropoeer Department of Hohai University Nanjing Jiangsu 210098 China) Abstract:Based on the Changjiang-crossing Campaign Memorial in Hefei city formwork support programs of concrete structure in the giant bow-shape cantilever tilt position are studied.The characteristics and the difficulties of engineering are introduced.Based on the existed problems such a8 huge shape large cantilever and big horizontal force four programs are put forward and pared from construction difficulty construction schedule project cost security and other aspects.Takeing into account every factors the final program is determined.Some reasonable construction suggestions are finally invited. Key words:oblique cantilever structure;formwork support;program parison;construc...
[关键词]改造工程;托梁换柱;加周;自密实混凝土;注胶 [中图分类号]TU746.3[文献标识码】A[文章编号]1002-8498(2011)23-0103-04 Design and Construction of Column-removed RetrofitProjectfora CertainCinema Liang Peixin',Zhang Hui²,Wu Qiang',Zhang Xueying',Ke Jiaqing (1.DepartmentofCiil Engineering,NanjingInstiue ofTechologyNanjing,Jiangsu211167,China; 2.DeparmentofArchitecture and Civil Engineerng,Jinken CollegeofTechology,Nanjing,Jiangsu 211156,China) Abstract;Based on the column-removed retrofit project of a certain cinema, some critical construction techniques are introduced.Because the hidden beam of roof is flush with the slab bottom, the concrete of the added section can only be poured below the roof slab. However, the routine pouring method can't meet the requirement of the new-old concrete bond behavior.Finally, some measures are taken from such aspects as material,construction technology and structure method,the difficult problems are solved by dry- mixed self-pacting concrete,secondary paction glue-injction and prestresing. The structure of the cinema works well afterrebuilding and strengthening,andno cracks are found between the new-old concrete. Key words: reconstruction project; supporting beam and changing column; strengthening; self- pacting concrete;glue-injection
1工程概况本工程的特点如下:①屋面荷载大。
2012年6月下 施工技术 第41卷第367期 CONSTRUCTION TECHNOLOGY 67 某弧形闸门门叶焊接变形控制技术 王定苍,赵文芳 (式警水电第二总队,江西南昌330096) [摘要]门叶是闸门的重要构件,门叶的加工、装配和焊接质量对闸门的安装和使用有重要影响.结合江口水电站 溢洪道弧形工作闸门门叶焊接工程,详细介绍了弧形闸门门叶焊接工艺流程和控制要点,包括单件焊接、骨架焊接 等.通过数据检验结果表明,通过合理的焊接顺序和预留反变形指施,江口弧形闸门门叶结构变形尺寸得到有效 控制. [关键词]水电站:闸门:门叶:焊接:变形 [中围分类号]TU758:TG457.5 【文献标识码]A[文章编号]1002-8498(2012)12-0067-03 Welding Deformation Control on Some Radial Gate Leaf Wang Dingcang Zhao Wenfang (No.2 Hydropover Force of Armed Police Nanchang Jiangxi 330096 China) Abstract:Gate leaf is important ponents of sluice gate and the gate leaf manufaturing assembly and welding quality have great influence to the assembly and using of sluice gate.Combined with the spillway radial gate leaf welding project of Jiangkou Hydroelectric Power Station the welding process and control points of radial gate leaf are introduced including single parts welding and skeleton welding.The results show that the structure deformation are effectively controlled by reasonable welding process and reservation anti-deformation method. Key words:hydroelectric power stations;sluice gate;gate leaf;welding:deformation 门叶是闸门的重要构件,弧门的门叶由面板、也受到周围金属的阻碍,不能自由收缩,致使构件 主梁、小梁及隔板等组焊而成.由于门叶的几何形产生焊接应力和焊接变形.在弧形闸门焊接时,纵 状比较复杂,焊缝密集,应力分布又较集中,容易造向和横向的收缩变形、角变形、弯曲变形、波浪变形 成焊接变形,所以在弧形闸门制作中对构件的加和扭曲变形都有可能产生. 工、装配和焊接等方而都要采取有效措施,才能防2门叶焊接变形控制方法 止构件产生过大的焊接变形.如焊接变形超过规 焊接变形的大小与构件本身的刚度、焊缝在构 定标准时,必须加以矫正,使每一个构件的尺寸和件的位置、装配质量、焊接顺序、焊接方向、焊接电 本身的平直度符合规定后,才能拼装.矫正焊接变 流、焊接速度、冷却速度、工件摆放情况等都有关 形要花费大量的人力和物力,还会拖延闸门制造的 系.常用的焊接变形预防措施有:反变形、利用...
[关键词】钢结构;弦支穹顶;预应力;有限元分析;张拉 [中图分类号]TU392.5 [文献标识码】A [文章编号】1002-8498(2014)10-0078-04 ConstructionSimulationandAnalysison thePrestressed CableofSuspended-dome Chen Ming²,Qin Chengwen”,Yuan Guoping” (1.Civil and Environmental Engineering School,University of Science and Technology Bejing,Beijing 100083,China; 2.Architecture and CivilEngineeringSchool,InnerMongolia University ofScience andTechnology,Baotou, Inner Mongolia 014010,China;3.Zhejiang Zhongnan Construction Group Steel Co.,Lud.,Hangzhou,Zhejiang 310000,China) Abstract:Taking the suspended-dome structure of prehensive gymnasium in Ji'ning City as example, the prestresed tension process was simulated and analyzed by inverse analysis of construction,and the vertical displacement of the control joints and the toprod maximum stress ratio of roof were parably analyzed with the change of tensioning position, tensioning grade and tension sequence.The influences on suspended-dome structure of different tensioning schemes were obtained,and the prestressed method was suggested. Key words:steel structures; suspended-dome; prestressing;finite element analysis; tensioning 弦支穹顶结构是一种刚柔相济的预应力钢结个支座支撑在周围的混凝土柱上。
2011年11月上 施工技术 第40卷第352期 CONSTRUCTION TECHNOLOGY 85 某建筑群基础注浆加固试验与实践 陈杏祥1,陈金祥2 (1.应天职业技米学院管理工程系,江苏南京210046;2.南通鑫金建筑安装有限公司,江苏南通226000) [摘要]南通市某4幢2层框架建筑群外立面增加了仿古木建筑屋顶,上部荷载的增加将导致结构承载力不足和 较大的沉降变形.为有效解决上述问题,对原结构的部分基础和屋面梁进行加固处理.对施工中提出的基础植筋 加固方法进行了分析;通过模拟试验验证基础注浆加固的可行性,总结了注浆加固在该建筑群实施的经验. [关键词]地下工程;基础;植筋;加固;试验;注浆加固 [中图分类号]TU753.8 [文献标识码]A [文章编号]1002-8498(2011)21-0085-03 Test and Implementation of Buildings Foundation Reinforced by Grouting Method Chen Xingxiang' Chen Jinxiang? (1.Department of Management and Engineering Yingtian College Nanjing Jiangsu 210046 China; 2.Nantong Xinjin Construction and Installation Co.Ltd.Nantong Jiangsu 226000 China) Abstract:The facades of four two-layer frame structures in Nantong add antique wood roofs.The adding of upper structure load will result in lack of load-capacity and larger settlement deformation of the foundation and the existed roof beams.To effectively solve the problem part of foundation and roof beams are strengthened.The authors analyze the construction method of foundation planting-bar reinforcement verify the feasibility of grouting foundation reinforcement by test and summarize the grouting reinforcement experiences of the building group. Key words:underground;foundation;planting bar;reinforcement;test;grouting reinforcement 由于视觉景观、空间环境等要求,为提高沿街6月陆续开工,于2010年9月按设计施工图纸和建 建筑立面的整体统一性,在规划允许的前提下,可 设方的要求施工基本完成. 采取在原有建筑立面上运用统一的建筑词汇,在重 为了更好地开发旅游资源,振兴当地经济,2010 点部位(檐口、窗口、入口)反复强化处理.改造后 年9月底,建设方提出本工程要在原有建筑群素朴 由于外部构件的增加,使用荷载超过原来的设计荷 的外立面上增加仿古木建筑...
施工技术 2012年5月上 54 CONSTRUCTION TECHNOLOGY 第41卷第364期 某建筑修缮改造工程抗拔桩设计及讨论 孙建,邱洪兴,胡涛 (东南大学土木工程学院,江苏南享210096) [摘要]南京某民国文物建筑原为2层砖混结构,无地下室,现因修改造需要,拟改为异形柱框架结构,且增设1 层地下室,基底埋深为5.2-6.8m.由于地下水位较高,需考虑地下室的抗浮问题.结合该工程讨论了抗拔桩数 量的确定、桩身配筋计算及裂缝宽度验算等需要注意的问题,建议果用单桩安全系数法分区抗浮以及利用预留腐 蚀余量(增加纵筋直径3mm)的方法代替裂缝宽度验算等. [关键词]文物建筑:改造;抗拔桩;承载力:裂缝 【中图分类号]TU746.3 [文献标识码]A 【文章编号]1002-8498(2012)09-0054-03 Design and Discussion of Uplift Piles in a Building's Retrofitting Sun Jian Qiu Hongxing Hu Tao (School of Civil Engineering.Southeast Universiry Nanjing Jiangsu 210096 China) Abstract:A historic building built during the Republic of China in Nanjing is a two-floor masonry structure residence without basement.Now for the sake of repairing and reconstructing it needs to be changed into frame structure with specially shaped cohumns and single floor basement whose foundation base is buried to the depth of 5.2-6.8m is to be added.For the water level underground is high the anti-floating design of the basement need to be considered.Combined with this project some problems about determination of the quantity of uplift pile calculation of the reinforcement and checking of crack width are discussed.It is advised that designer use factor of safety method of single pile and add 3mm to bar diameter to ignore the checking of crack width and so on. Key words:historic buildings;modification;uplift pile;bearing capacity;crack 1工程概况 表1各土层物理力学指标 南京某民国文物住宅建筑,1932年建于颐和路 Table 1 Physical and mechanical iadex of each soil layer 边,总建筑面积486...
2014年5月上 施工技术 第43卷第9期 CONSTRUCTION TECHNOLOGY 91 D0I:10.7672/5j52014090091 某幕墙工程异形棱状装饰架设计与施工 郑春,刘涛 (中建三局装饰有限公司,北京100070) [摘要]装饰线条以其形式多样性在建筑装饰工程室外装饰中的应用越来越广泛,但更多的应用局限在装饰效果 上.以大型异形棱状装饰线条在深圳软件产业基地第三标段工程中的应用为背景,从设计与施工的角度不断地对 幕墙系统构造进行优化,重点阐述异形棱状装饰构架的防水分析(弱化风雨)及受力分析等,使原本功能单一的装 饰条起到了多种作用,充分发挥了其功能. [关键词]幕墙;装饰线条;受力分析;防水;施工 [中图分类号]TU74 [文献标识码]A [文章编号]1002-8498(2014)09-0091-04 Design and Construction of Special-shaped Prismatic Decorative Frame for Some Curtain Wall Structure Zheng Chun Liu Tao Decoration Co.Lid.of China Construction 3rd Engineering Bureau Beijing 100070 China) Abstract:Decorative lines in its various forms are widely used in outdoor building decoration engineering but the application is more limited in decorative effect.This paper taking large shaped prismatic decorative lines in Shenzhen Software Industry Base Third Bids as engineering background the curtain wall system structure is optimized constantly from the angles of the design and the construction.Authors focus on the analysis of waterproof shaped prismatic decorative frame with weakening wind and rain and stress analysis and so on.The original function of a single decorative strip plays a variety of roles to realize its function. Key words:curtain walls;decorative lines;stress analysis;waterproofing;construction 1工程概况 深圳软件产业基地第三标段工程位于深圳市 高新区南部的填海六区,总建筑面积137108m2 由 3栋塔楼组成,裙楼通过钢结构连廊连成一体(见图 1) 1号塔楼地上27层,结构主体高度95.5m 计入 出屋面结构时,总高度103.7m;2号塔楼地上16 层,结构主体高度52.6m 计入出屋面结构时,总高 度60.1m;3号塔楼地上24层,结构主体高度 83.8m 计人入出屋面结构时,总高度9...
2017年4月上 施工技术 第46卷第7期 CONSTRUCTION TECHNOLOGY D01:10.7672/sgjs2017070007 某巨型厂房钢网壳结构施工过程分析 游桂模,周观根,孙佳佳 (浙江东南网架股份有限公司,浙江杭州311209) [摘要]以某巨型厂房钢网壳结构作为研究对象,采用MIDAS Gen8.26软件进行网壳安装全过程仿真分析,包括 提升过程受力分析、临时水平拉索索力分析、网壳结构施工过程抗风分析、提升架及拉索卸载分析等.分析结果对 施工方案优化与辅助设施的设计提供可靠依据. [关键词]钢结构;膜结构;拱形网壳;仿真分析;拉索;抗风分析 [中图分类号]TU392.5 [文献标识码]A [文章编号]1002-8498(2017)07-0007-04 Analysis of Construction Process for Latticed Shell Structure in a Huge Workshop YOU Guimo ZHOU Guan'gen SUN Jiajia (Zhejiang Southeast Space Frame Co.Ltd.Hangzhou Zhejiang 311209 China) Abstract:Taking the steel lattice shell structure of a huge workshop for the research object by using MIDAS/Gen8.26 software lattice shell installation process simulation analysis was studied.The research content included force analysis in lifting process temporary cable's force analysis wind resistance analysis support brace and cable's unloading analysis.Analysis results provide reliable basis for optimizing scheme and design of the auxiliary facilities. Key words:steel strctures;membrane structures;arch lattice shell;finite element analysis;cables;wind resistance analysis 1工程概况 某双层拱形网壳结构(见图1),总用钢量约 9300t.结构长280m 宽150m 高120m.标高 64.237m以上为弧形网壳结构,标高28.000m以下 150m 280m 部分为圆管桁架,采用插人式柱脚;标高28.000- a建筑效果 b结构示意 75.000m为平板网架,平板网架倾角为7°.门框结 构顶标高120.000m 85.000m标高以下为双层网 图1某巨型网壳厂房 壳,网壳厚度5.84m;85.000m标高处设置门顶桁架 Fig.1 Mega-lattice shell industry building 梁,外挑20.2m.门顶桁架梁至拱顶区域为门头网 和图3所示,通过逐步外扩拼装,提升点置换,逐步 架,门头网架厚5.4m.山墙为焊接球网架结构,范 提升.安装过程如下:①第1单元在拼装平台上拼 围从地面直至结构顶部. 装完成,水平临...
[关键词】钢结构:膜结构;网壳;屋盖;外扩累积提升;抗风措施 [中图分类号]TU94[文献标识码]A[文章编号]1002-8498(2017)07-0001-03 KeyTechnologyfor Construction ofLatticed Shell Structure in a Huge Workshop ZHOU Guan'gen,YOU Guimo,HUANG Yong (Zhejiang Southeast Space Frame Co.,Ld.,Hangzhou,Zhejiang 311209,China) Abstract;A workshop has a large span, height and area. Combination with these characteristics and field condition,external cumulative lifting of latticed shell structure is used. A series of construction techniques are introduced such as external cumulative hydraulic lifting, lifting points arrangement and form,wind resistance design,horizontal forceoffsetmeasurement,supporting system design and closure and unloading. The techniques application makes the construction safe and efficient and reduces cost in measure fee. Key words: steel structures;membrane structures; shells; roofs; extermal cumulative lifting; wind resistance 1工程概况 某厂房位于我国西北某地,建筑面积约3.2万 m²,厂房大门高85m,宽105m。
厂房结构如图1所 示,网壳结构,外围为彩钢板。
钢结构网壳长280m, 宽150m,高120m。
标高28.000m以下部分为圆管 桁架结构,采用插人式柱脚;标高28.000m以上, 75.000m以下为平板网架结构,平板网架倾角为图1厂房钢结构示意 7°;标高64.237m以上为弧形网壳,正放四角锥焊Fig.1Steel structure of the workshop 接球形节点,网格基本尺寸为6mx6m。
[关键词]钢结构;膜结构:厂房:控制系统;折叠;施工技术 [中图分类号】TU392.6 [文献标识码]A [文章编号]1002-8498(2017)07-0011-04 Construction ofFolded-openMembraneStructure Gate of a Huge Workshop YAN Yongzhong',ZHOU Guan’gen²,JIN Hui',YU Chunje²,XU Zhong (1.Zhejiang Southeast Steel Structure Co.,Lid.,Hangzhou,Zhejiang 311209,China; 2.Zhejiang Southeast Space Frame Co.,Lid.,Hangzhou,Zhejiang 311209, China; 3.Shenyang Treasure Door Industry Co..Lid. Shengyang,Liaoning 110179,China) Abstract;A workshop with a super large area gate is 85 meters high.The manufaction and construction is difficult.The gate’s cloth ismembrane material and supporting is cable structure.The gate’s open and closed is controlled by electric control system.The connection between membrane and cable and electric control system are analyzed. Component deformation accuracy control,membrane laying, cable fastener Key words:steel structures;membrane structures;workshop;control system;folding;construction 1工程概况 某巨型厂房工程长280m,宽150m,高120m,建 筑面积37240m²。
[关键词]钢结构;膜结构;控制系统;质量控制;提升 [中图分类号]TU392.6 [文献标识码】A [文章编号】1002-8498(2017)07-0004-03 InstallationofFolding-openMembraneStructureGateofaHugeWorkshop ZHOU Guan'gen,HUANG Yong,WAN Jingxin,ZHU Chaowei (Zhejiang Southeast Space Frame Co.,Lud.、Hangzhou,Zhejiang 311209, China) Abstract:A folding-open membrane structure gate of a huge workshop is difficult to construct because its high accuracy of installation,hard quality control and transportation and lifting. A series of techniques are introduced including running track design,membrane material fusion,transportation and lifting technique and electronic control system.These techniques are proved to be efficient and can guarantee the construction quality and scheme. Key words;steel structures;membrane structures; control system;quality control;lifting 1工程概况 风速为25.3m/s。
某厂房为跨度150m,最高点标高120.000m,长 280m的超高网壳建筑(见图1)。
该建筑一端为封 闭山墙,另一端为柔性推拉式大门。
门洞净开尺寸 为宽105m,高85m。
大门由电动实现推拉,北侧固 定,向南侧开启与闭合(见图2)。
大门抗风骨架由间距2.0m的67根Φ30mm钢 图1厂房结构尺寸 索构成,钢索上部通过滑块与大门上导轨连接,钢 Fig.1 Steel structure size of the workshop 索下部通过滑块与下导轨连接。
钢索表面覆盖膜 布,膜布材质为聚酯乙烯,基布厚度0.8mm。
膜布 和钢索重合部分均有加强带和耐磨带。
大门上部采用一种补偿装置,其原理为在大门 承受大的风荷载和阵风时,可适当伸长,减少大门 图2大门开启 钢索的拉力,减少钢索对上部网架和下部基础的拉 Fig.2 Cable membrane door opening 力。
[关键词]预应力;预应力混凝土;管桩;抗拔桩;静载试验;承载力 [中图分类号]TU757.4[文献标识码]A[文章编号]1002-8498(2016)09-0074-03 AnalysisandTreatmentsoftheDamagesofPrecastTubularPilesDuring UpliftingStaticLoadingTestinanEngineeringProject Wang Hui,Yue Jinchao (School of Environment and Water Resources,Zhengzhou University,Zhengzhou,He'nan 450001,China) Abstract;Forinvestigating the reasons of precast tubular pile damage during uplifing static loading test in an engineering project, the geological engineering conditions of experimental field, test methodology and procedure were deeply analyzed. Finally, the main reason for this damage was obtained and the corresponding treatments were also put forward.The results show that the measures are appropriate and the cost and construction period are saved. Key words: prestresing; prestressed concrete; piles; anti-lifting piles;static loading test; bearing capacity 预应力管桩具有构件质量可靠、桩身强度高、砂土液化的现象,使预应力管桩抗拔承载力大大减 作为抗拔桩在工程中应用日益增多2。
2010年9月 施工技术 第39卷第9期 CONSTRUCTION TECHNOLOGY 75 某工程预应力抗浮锚杆施工工艺改进 李启东,郑委,姜孝芳,姚永权 (威海建设集团股份有限公司,山东威海264200) [要]威海市民支化中心工程采用筏够基础,工程性海,地下水位较高,设计有预应力抗浮器料.为解决提高 杆抗拔我力、偶证节点防水施工展量而个和五美联的施工难题,队施工工艺进、多专业施工配含、全过程 术控制角度,介了预应力抗浮科成套施王新技术,保证了抗浮猫杆抗拔柔我力和节点防水故果. [关键询]预应力抗浮锚杆:抗拔承载力:防水:施工工艺 [中分类]TU753.1 [献标识弱]A [章编]10028498(2010)09-0075-03 Improved Construction Technology of Prestressed Anti-floating Anchor in Some Project Li Qidong Zheng Wei Jiang Xiaofang Yao Yongquan Weihai Construction Group Co.Lad.Weihai Shandong 264200 China) Abstract:Raft foundation is designed in Weihai Public Cultural Center.The project locates in coastal area therefore prestressed anti-floating anchors are designed to prevent too large buoyancy caused by underground water.A new set of construction technology for prestressed anti-floating anchors is introduced from construction process improving multi profession cooperation and whole process control in order to solve associated difficulties of improving bearing capacity of prestressed anti-floating anchors and ensuring waterproof quality of joints.It proves that the new construction technology ean ensure anti- pulling capacity of prestressed anti-floating anchors and waterproofing effects of joints. Key words:prestressed anti-floating anchor:anti-pulling capacity:waterproof:construction process 目前工程中广泛应用的抗浮技术有抗拔裤和抗拔钢网架结梅,外墙多为破端暴墙,局部为干挂石材,为威 摇杆两种,其中抗拔的抗拔承载力较高,但成本也较海市标志性建筑.地下宣设有交物含等重要场所,防 高:抗拔错杆承载力相对低一些,成本也低得多,但其 水等级为I级,采用4mm厚聚氨酯防水涂料.由于工程 施工技术并不是很成熟.本交研究在不大幅度增加成 邻近海边,地下水位...
施工技术 2017年8月上 46 CONSTRUCTION TECHNOLOGY 第46卷第15期 D0I:10.7672/8js2017150046 某工程预应力悬挑梁施工难点及控制要点* 张伟,周支军,李阳,张中善,包正 (中国建筑第七工程局有限公司,河南郑州450004) [摘要]介绍某工程大跨度悬挑预应力混凝土梁施工概况,针对梁柱节点预应力束准确定位难、局部受压面积不足 易出现裂缝,模板支撑体系拆除产生下挠3个间题,分析3个难点出现的根本原因并提出了解决方案,同时述了 后张法有粘结预应力混凝土梁施工控制要点. [关键词]混凝土;预应力;悬挑梁;裂缝;施工技术 [中图分类号]TU745.2 [文献标识码]A [文章编号]1002-8498(2017)15-0046-03 Construction Difficulties and Control Keypoints of an Engineering Prestressed Cantilever Beam ZHANG Wei ZHOU Zhijun LI Yang ZHANG Zhongshan BAO Zheng (China Construction Serenth Engineering Dirision Co.Ltd.Zhengzhou He'nan 450004 China) Abstract:This paper introduces a project of large span cross cantilever construction of prestressed concrete beam.According to the problems of pinpoint difficulty of beam and column joint prestressed tendon that local pression area is not enough it is easy to crack and that the formwork support system is dismantled to produce deflection the reasons for difficulties and corresponding solving schemes are analyzed and the construction control keypoints for post tensioned bonded prestressed concrete beam are described. Key words:concrete;prestressing;cantilever beam;cracks;construction 1工程概况 平面布置如图1所示.预应力混凝土梁所采用的波 某商业工程位于郑州市区,总建筑面积约51万 纹管直径为70mm 2根预应力混凝土梁和1根普通 m2.由A B C.D座组成,地上18层,建筑高度为框架梁其上部纵筋均为2排o25 则节点处有2条 79.9m 整个工程2~18层的各层外围均为大跨度 波纹管、6排25上部纵向钢筋穿过,且框架柱主筋 预应力混凝土悬挑梁,悬挑跨度平均为15m 2根预 直径较大、箍筋密集,导致波纹管无法穿过且预应 应力混凝土梁与1根普通框架梁在梁柱节点交叉,力束曲线节点处竖向位置偏差过大,严重影响工程 预应力混凝土梁的张拉端均为双孔形式,截面尺寸 结构质量,如何保证预应力束曲线依照深化设计施 多为450mm×1400m...
施工技术 2013年10月上 22 CONSTRUCTION TECHNOLOGY 第42卷第19期 D0I:10.7672/sgjs2013190022 某工程软土基坑支护设计及钢斜撑的应用 郭学伟,庞爱红,徐明 (中国建筑第八工程局有限公司,北京100097) [摘要]天津奕聪花园工程地下室平面设计与基坑支护相结合,软土基坑采用灌注桩分级支护.钢斜撑在两级灌 注桩间增加侧向刚度,明确钢斜撑处结构施工与土方开挖之间的顺序.采用三轴搅拌桩进行止水帷幕和基坑内设 大口井降水的方法进行基坑降水.通过重点监控地下室水平和竖向后浇带节点防水施工质量,满足地下室无渗漏 要求.工程实践表明,采用此技术降低了施工成本,提高了施工效益. [关键词]地下工程;深基坑;支护;钢斜撑;设计;施工 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2013)19-0022-04 Design of Soft Soil Foundation Excavation Support in Some Project and Application of Steel Brace Guo Xuewei Pang Aihong Xu Ming China Construction Eighth Engineering Division Co.Lid.Beijing 100097 China) Abstract:Design of basement bined with foundation excavation supports is adopted in some project in Tianjin and the soft soil foundation excavation adopts classified support with bored piles.Steel brace was used among bored piles to improve the lateral stiffness and the construction process of steel brace and earth excavation were determined.Three axes agitating pile was used for waterproof curtain and big well was used for dewatering.Waterproofing construction quality was ensured by monitoring.Engineering practice shows that application of the technology reduces the cost and improves construction benefit. Key words:underground;deep foundation excavation;supports;steel brace;design;construction 1工程概况 2.2水文地质条件 天津奕聪花园工程位于天津市南开区,北至奥 场区水文地质条件(渗透性指标)如表2所示. 城住宅和奥城商业广场、东至奥维拉住宅区、南至 场区地下潜水埋深1.33-1.75m 年变幅0.5~ 红旗南路、西至彩虹花园居住区.其中,酒店式公 1.0m.微承压水含水层为⑤,层粉砂层,其上④层 寓2栋,为5 6号楼,分别为32 38层,带2层地下 粉质黏土为隔水顶板...