施工技术 2010年10月 44 CONSTRUCTION TECHNOLOGY 第39卷第10期 北京海关游泳馆采光顶预应力张弦结构施工技术 张字鹏,徐中文,陈新礼 (北京市建筑工程研究院,北京100039) []北意海关湖泳馆采光项采用预应力弦传构.根据预应力拉施工方案,应用Midas./Gen有限元计算 件对施工过程进行仿真分析,为实际张时张插力值提供理论体搭.在整个张指施工过程中对结构变形进竹监 倒,实侧结果理新据误差较小,满足规范和设计要求. [关键询]预应力:张随结构:伤真计算:工测 [中分类]TU758.166 [献杉识码]A [章编导]1002-8498(2010)10-0044-03 Construction Technology of Prestressed Beam-string Structure in Lighting Roof of Beijing Customs Swimming Gymnasium Zhang Yupeng Xu Zhongwen Chen Xinli Beijing Building Construction Research Institute Beijing 100039 China) Abstract:Prestressed beam-string structure is adopted in lighting roof of Beijing Customs Swimming Gymnasium.According to stretching process prestressing construction is simulated by calculation software of Midas/Gen which provides a theoretical basis for the actual value of tension.In the stretching process vertical deformation is monitored and the measured data which match the research data can satisfy with requirements of the specifications and design. Key words:prestress:beam-string strueture:simulation caleulation:construction monitoring 1工程概况 上弦钢管 北京海关游泳馆采光顶面为双曲椭球形,长轴 跨度42.9m 短轴跨度20.9m 笑高2m.采光项屋面采 用3层L0WE中空夹胶彼端莱楼,外层破端傲丝网印 下弦拉索 网纹图亲,中向设置自动烟窗.破璃暴墙支撑钢 三图 结构采用预应力张弦结构,通过短钢柱连接手下部混 凝土环梁中的可滑动支座上.读张雅结构的上雅为 b典型剂面 巾203×10钢管,撑杆为102×6钢管,长轴方向下弦 为b36mm不锈钢拉索(见图1a).拉索一端圈定,一 图1采光质三及刺面 Fig.1 Three-dimensional and typical profile of lighting roof 端可调,其调节端采用单螺杆式可调节具. 2结构体系 3预应力施工方 本工程采光顶钢结构由7榴平行的单向张弦梁3.1结构施工流程 成,每棍张梁的上弦向上弯曲呈拱形(见图1),各 本工程施工流程:搭设支撑脚手架一→单福张弦梁 撑杆的上端与上弦对应节点沿索张拉...
[关键词]机场;收费站:钢结构;索膜结构;施工模拟 【中图分类号]TU383 [文献标识码】A [文章编号]1002-8498(2011)21-0030-04 ProcedureofTensioningtheCable-membraneSystemoftheTollStation ontheSouthLineTowardsBeijingAirport Hu Qingwei,Ye Xiaobing,Bo Yanpei (Bejing N&L Fabric Technology Co.,Lid.,Beijing 102601,China) Abstract:The difficulties lying in the project of the great pavilion on the south line towards Beijing Airport are installing and tensioning the cable system. Accurate construction simulation is carried out according to installation sequence such as installing suspension cables,tensioning guy cables,stretching side ring cables, and tensioning valley cables,in order to check if tensioning equipments are appropriate,and make it to be the basis of measure supervision.The results in the actual construction pletely verify the accuracy of simulation. The whole process of cable system installation is divided into 11 steps,which ensure applying prestress on the plicated big span flexible space structure. This paper summarizes the experience acquired during the construction. Key words:airport; toll station; steel structures; cable-membrane structures; construction simulation 1工程概况 顶标高35.96m,柱长约30.359m,单根重约38t,钢 北京机场南线收费站位于北京市新建T3航站 枪杆通过拉索与地面锚座相连。
施工技术 2015年3月下 22 CONSTRUCTION TECHNOLOGY 第44卷第6期 D0l:10.7672/sgjs2015060022 北京日出东方凯宾斯基酒店框架式无立柱隐框 曲面玻璃幕墙安装技术 田承行,苟金瑞,米继东,王三亮 (北京城建集团有限责任公司,北京100088) [摘要]结合北京日出东方凯宾斯基酒店幕墙工程,重点分析了曲面玻璃幕墙安装过程中因为建筑外形特点而产 生的问题和施工难点,针对上述问题提出竖向龙骨采用拉弯龙骨和设计一种新型玻璃幕墙与主体结构连接转接件 等合理化建议和措施,确定取消立柱区别于规则框架式隐框曲面玻璃幕墙的安装方案,确保了本工程施工质量和 工期. [关键词]装饰工程;玻璃幕墙;曲面玻璃幕墙;隐框;安装 [中图分类号]TU767 [文献标识码]A [文章编号]1002-8498(2015)06-0022-04 Installation of Concealed Frame Curved Glass Curtain Wall Without Columns in Sunrise East Kempinski Hotel Tian Chenghang Gou Jinrui Mi Jidong Wang Sanliang Beijing Urban Construction Group Co.Lad.Beijing 100088 China) Abstract:Combining with the curtain wall of Sunrise East Kempinski Hotel the construction difficulties and problems in the installation of curtain wall caused by the building shape characteristics are analyzed in detail.A series of advices and measures are put forward including the tension-bending keel is used as columns the design of new type of connectors between curtain wall and main structures.The good construction quality and construction period is ensured. Key words:decoration;glass curtain wall;curved glass curtain wall;concealed frame;installation 1工程概况 北京日出东方凯宾斯基酒店工程建筑外形独 特,每层平面椭圆形逐层渐变,这就形成了双曲面 的外立面.塔楼幕墙系统采用铝合金及钢管龙骨 架式无立柱 支撑体系,竖向主龙骨采用Q235B圆钢管,表面氟 急框玻璃幕墙 碳喷涂处理,横向龙骨采用氟碳喷涂的铝合金型 材,喷涂厚度≥40μm 钢管立柱通过转接件挂接到 主体钢结构上,玻璃面板采用(62.28PVB6 Low-E18A62.28PVB6)mm双银Low-E中 空钢化夹胶暖边玻璃,部分消防出口位置采用(8 24A8)mm双银Low-E中空钢化暖边玻璃,玻璃角 部设置矩形铝合金固定压板.为实现建筑外观造 型,采用框架式无立柱隐框曲面玻璃幕墙施工技 图1框架式无立柱隐框曲面玻璃幕墙分布 术.具体位置...
[关键词】塔;钢结构;吊装;安装;检测 [中图分类号】TU758.1[文献标识码】A[文章编号】1002-8498(2013)08-0006-03 SteelStructuresInstallationTechnologyoftheHigh Flexible TowerBody ofLookoutTower inBeijingOlympicPark Yu Changwei,Gao Yulan,Wang Yimin,Sang Xiuxing (Bejing Construction Engineering Group Co.,Lad.,Bejing 100055,China) Abstract;Lookout Tower in Beijing Olympic Park is super high-rise flexible building with the height of 248m. It is plex and dificult for construction. By selection of the schemes, the steel structures installation technology was introduced, which was assembling units on the ground, and integrally hoisting units by 1 000t m attached jib tower crane.236 units of tower body were hoisted, and it largely induced the work at high altitude. The installation technologies of steel structures were introduced in detail, including main machine selection, tower body segment, assembly of the steel structures,sliding and location of units, installation of units and so on. Key words;towers;steel structures;hoists;installation;detection
1工程概况筒壳直径为6m,塔2、塔3由外层筒壳和内层角柱 奥林匹克公园瞭望塔位于奥林匹克公园中心核心筒组成,外层筒壳直径为7.3m。
[关键词】钢结构;塔;安全防护;爬架;焊接 [中图分类号】TU714 【文献标识码】A [文章编号]1002-8498(2013)02-0001-05 SafetyProtectionTechnologyforFlexibleSteelStructures Construction ofBeijing OlympicParkLookout Tower Xu Delin,Sun Lianxue,Yu Changwei, Guo Feng,Huang Banglun (Bejing Construction Engineering Group Co.,Lad.,Beijing 100055,China) Abstract; Lookout Tower in Beijing Olympic Park is super high flexible steel structure, which is posed f towerbase,towerbodyand tower rown,anditincludesfivetowers withdifferent diameter among 6.5m and 14m.This project has characteristics of large engineering quantity,plex structure, high requirements for installation and welding protection. The main safety protection risks according to tower body and crown construction are analyzed. During construction of the tower crown, the main treatmentmeasures are similar to that of tower body,and special operation platformis used.Itispointed out that safety measures and management measures should be applied at the same time. Key words;steel structures; towers; safety protection; climbing scaffold; welding 随着我国城市化进程的步伐不断加快,资源紧部分组成,整个平面由5个直径6.5~14m的塔组 缺的问题日益明显,为提高资源的利用率,超高层成。
2016年4月上 施工技术 第45卷第7期 CONSTRUCTION TECHNOLOGY 99 D0I:10.7672/8js2016070099 北京CBD核心区地下公共空间市政基础设施建设 张晋勋1,李洪毅1,蔡明2,谢佳华3,张洁,周辉,许晓东3 (1.北京城建集团,北京100088:2.北京市建筑设计研究院有限公司,北京100045; 3 北京国际商务中心区开发建设有限公司,北京100020) [摘要]北京CBD核心区地下公共空间市政交通基础设施项目,是集交通、地下综合管廊、景观以及综合防灾功能 为一体的地下空间建设项目.为保证CBD核心区资源的高度整合,采用综合管廊模式设计.工程建设创造性地 提出并采用了“一体化”施工模式,既保证了工程本身建设进度,也有效配合了各二级地块的建设进度,节约了大量 的社会资源. [关键词]地下工程:综合管廊;核心区;“一体化”施工 [中图分类号]TU921 [文献标识码]A [文章编号]1002-8498(2016)07-0099-06 Underground Public Space Municipal Infrastructure Construction in Beijing CBD Core Area Zhang Jinxun' Li Hongyi' Cai Ming2 Xie Jiahua Zhang Jie' Zhou Hui' Xu Xiaodong (1.Beijing Urban Construction Group Co.Ltd.Beijing 100088 China;2.Beijing Building Construction Research Institute Co.Lad.Beijing 100045 China;3.Beijing International Central Business District Dexelopment Construction Company Beijing 100020 China) Abstract:Underground public space municipal transport infrastructure projects in Beijing CBD area is posed of transportation underground pipeline corridors landscape and prehensive disaster prevention function.To ensure a high degree of integration of the CBD core area of resources an integrated tube design gallery mode was adopted.The integration construction mode was put forward which not only can ensure the construction progress of the project and save social resources but also effectively improve construction progress of each secondary plots. Key words:underground;pipeline gallery;core area;integration construction 北京CBD...
施工技术 2014年6月下 54 CONSTRUCTION TECHNOLOGY 第43卷第12期 D01:10.7672/gjs2014120054 兴隆水利枢纽围堰崩塌抢险技术* 陈新,潘洪 (武警水电第二总队第四支队,江西南昌330096) [摘要]兴隆水利枢纽一期围堰为全年10年一遇土石围堰,受20年一遇秋季洪水的影响,围堰局部出现崩塌并迅 速扩展,险情急剧加重.首先对灾害原因进行分析,得出抢险的特点与难点,最后有针对性地制定了抢险方案,经 86h紧急抢修,圆满完成此次抢险任务.对此次围堰抢险施工技术作了详细介绍和经验总结. [关键词]水利枢纽;围堰;崩塌;抢险 [中图分类号]TV61 [文献标识码]A [文章编号]1002-8498(2014)12-0054-02 Emergency Rescue About Cofferdam Collapse in Xinglong Hydro-junction Chen Xin Pan Hong No.4 Detachment of No.2 Hydropower of Armed Police Nanchang Jiangxi 330096 China) Abstract:Xinglong Hydro-junction is a earth-rock cofferdam which is very rare.Because of the influence of the most extraordinary flood in twenty years the cofferdam is collapse in somewhere then the situation is very dangerous.The disaster causes are analyzed the characteristics and difficulties of the disaster are put forward then the emergency rescue scheme is determined.The emergency rescue is successful finished after the soldiers working hard.The construction technology of emergeney rescue for the cofferdam is introdueed in detail and experience is summarized. Key words:hydro-junction cofferdams;collapse;emergency rescue 1险情概述 10m扩大到100m 崩塌高程从39.5m迅速向堰顶 1.1险情基本情况 延伸,局部崩塌处高程达41.50m 距堰顶高程仅 兴隆水利枢纽位于汉江下游湖北省潜江境内,1.同时,汉江上游持续降雨,流量不断增大,水位 上距丹江口水库380km 大(1)型水利枢纽项目,由 再继续上涨,险情将加剧,如不及时处置,将极可能 泄水闸、船闸、电站厂房、鱼道、两岸滩地过流段及 发生溃堰,围堰内价值数亿元的设备、材料以及数 其上交通桥组成.兴隆水利枢纽一期围堰为全年 千施工人员的生命安全受到严重威胁. 10年一遇土石围堰,塑性混凝土防渗墙圈式全封闭 2011年9月18日,武警水电第二总队接到湖 形式防渗.围堰总长5589.7m 其中上游围堰长 北省南水北调局请求火速支援兴隆水利枢纽抗洪 1724.5m 顶高4...
施工技术 2011年8月上 24 CONSTRUCTIONTECHNOLOCY 第40卷第346期 先张法预应力拱板粮仓屋盖原位现浇施工 张珂峰',夏正兵2 (1.南通华荣建设集团有限公司,江苏南通226005;2.南通市广播电视大学建筑工程系,江苏南通226006) [摘要】根据现浇先张法预应力拱板屋盖的设计方案,有针对性地利用顶部圈梁作为张拉台座和用支撑钢杆与钢 筋与中部圈梁的拉结作用有效地平衡了张拉时对台座的不平衡力,形成了先张法预应力拱板粮仓屋盖原位现浇施 工法.该方法利用钢管排架作拱板屋架的支撑架,室内排架顶部水平钢管顶撑于圈梁内侧和对圈粱的加固措施, 并采用钢管顶撑和斜拉钢筋对张拉力的平衡作用保证了先张法张拉施工的安全、可募.该方法施工进度快、整体 性好,并能够解决大型吊装机械难以进场的难题,经济效益明显. [关键调】先张法;预应力;拱板屋盖;现浇施工 【中图分类号]TU758.13 【文献标识码】A [文章编号〕1002-8498(2011)15-0024-03 Cast-in-situConstructionMethodofPretensioned PrestressedArchBarnRoof Zhang Kefeng',Xia Zhengbing (1.Nantong Huarong Construction Group Nantong,Jiangsu 226005 China; 2.Department of Building Engineering Nanong Radio &Television University,Nantong Jiangsu226006,China) Abstract;According to the scheme of cast-in-situ pretensioned prestressed arch board roof, the authors present cast-in-situ construction method of barm roof with pretensioned prestressed arch board which uses the top ring beam as tension bench and keep the tension bench in balance by connecting support steel suspenders stay steel bars and the central ring beam. In this method steel pipe frames are used as uodods oddo uo dd s os oo pejo p uon inner side of ring beam and measures are taken to reinforce ring beam which ensure the safety and reliability of construction by balancing tensioning forces with steel pipes supporting and stay steel bars. This method can quicken construction schedule and solve the problem of big hoisting machinery approaching to construction site and bring about great economic benefit. Key words:pretensioning method;prestress;arch board roof;cast-in-situ construction 1工程概况 60mm的隔板相连,上顶板配筋为864$10,分布 连云港市新海粮食物流中心普安仓储加工区 筋为Φ4@200,下底板配筋为36Φ5,分布筋为Φ4@ 南京粮食科学研究院设计的21m跨钢筋混凝土拱 张拉控制应力α=560N/mm².拱板混凝土强度 板平房仓标准仓型设计图集.21m跨先张法预应力 等级为C35,其余混凝土为C25. 拱板屋架实际跨长21720mm(两端各出轴线 该工程若采用预制方案,需占用大量场地,硬化 360mm),宽均为1220mm,每幢50福,13幢共650 作业台面,养护时间长、费工、费料并且吊装难度大, 福;屋架上顶板为抛物线型弧板,下底板为平板,厚 影响工期,所以采用原位现浇法施工.但该方法难 度均为40mm,上、下板两侧均为肋梁,上顶板肋梁 度较大,且没有工艺标准指导.本工程根据现场条 为70mmx150mm,上、...
施工技术 2017年9月下 42 CONSTRUCTION TECHNOLOGY 第46卷第18期 D0I:10.7672/sjs2017180042 倒挂结构高空施工安全质量控制分析* 况中华1,李兵,李鑫奎,滕鑫2 (1.上海建工集团股份有限公司,上海201114;2.上海建工四建集团有限公司,上海201103) [摘要]介绍了某高层塔楼倒挂结构逆序施工工艺.受下部楼板荷载限制,采用底部2层钢梁形成临时桁架,承受 部分上部悬挂结构荷载.同时采用施工控制技术对施工质量和安全进行管控,根据计算得到的施工过程中结构的 变形,设定预变形使结构完成时达到设计最终状态.同时依据计算结果在结构薄弱处布置监测点,进行施工阶段 的监测,以确保结构施工的安全性. [关键词]钢结构;倒挂结构;逆序施工;质量;安全;预变形 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2017)18-0042-03 Analysis of High-altitude Construction Safety and Quality Control for Inversion Structure KUANG Zhonghua' LI Bing' LI Xinkui' TENG Xin2 (1.Shanghai Construction Group Co.Lid.Shanghai 201114 China; 2.Shanghai Construction No.4(Group)Co.Lsd.Shanghai 201103 China) Abstract:Construction process on high-rise inversion structure is introduced.The temporary truss is formed by two steel beams at the bottom which is subjected to the load of the upper part of the suspension structure.Meanwhile the construction control technology for construction quality and safety control are used.According to the deformation of the structure calculated in the construction process the pre-deformation of the structure is set to plete the final state of design.At the same time the monitor for construction stage is done to ensure the safety of the structure construction on the basis of calculation results in weak structure. Key words:steel structures;inversion structure;reverse construction;quality;safety;pre-deformation 0引言 体的综合高层塔楼组成.1号塔楼(T1)地上60层, 高层建筑附属的倒挂结构的施工方案选择合 建筑高250m 2号塔楼(T2)地上59层,建筑高 ...
施工技术 2013年10月下 108 CONSTRUCTION TECHNOLOGY 第42卷第20期 D0I:10.7672/8gjs2013200108 倒挂井壁法在煤矿深基坑中的应用 于卫锋 (河南理工大学土木工程学院,河南焦作454000) [摘要]针对梁北矿矸石翻车机房基坑深度大、施工空间小、距离其他结构近、安全程度要求高等困难,借鉴竖井井 筒施工经验,采用倒挂井壁法进行基坑的开挖和围护,使基坑围护结构及翻车机房承重结构合为一体,节省了临时 支护设施,减少了施工工序,降低了工程成本.施工全过程中的地面沉降观测结果显示,基坑围护效果良好. [关键词]地下工程;基坑;倒挂井壁法;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2013)20-0108-03 The Application of Inverted Side-wall in Deep Foundation Excavation in Coal Mine Yu Weifeng School of Civil Engineering He'nan Polytechnic University Jiaozuo He'nan 454000 China) Abstract:According to the difficulties of the foundation excavation with large depth small construction space close distance and high safety requirements in Liangbei mine the method of inverted side-wall to excavate and maintain the foundation excavation was put forward using vertical shaft construction experience as reference.This method made maintain structure and load-bearing structure together which saved temporary support facilities reduced the construction process and reduced the cost of the project. The observations of land subsidence in the whole construction process show that the effect of maintenance excavation is good. Key words:underground;foundation excavation;inverted side-wall method;construction 1工程概况 梁北矿是神火集团名下重要的矿井之一,为了 矸石山涵! 翻车机房基础 开挖轮廓线、 提高矿井产量,需要对该矿出矸系统进行扩建,新 好石山涵洞2 8800 建研石翻车机房,由于场地有限,该机房全部位于 纹车房 8400 翻车中心线 N 地面以下,形成的基坑长12.6m 宽8.7m 深 13600 17.0m 东侧是水泵房,西北侧是研石山涵洞,西南 图1基坑位置平面 是临时绞车房,距离水泵房和绞车房的最短距离分 Fig.1 Location plan of the foundat...
施工技术 2013年4月上 68 CONSTRUCTION TECHNOLOGY 第42卷第7期 D0I:10.7672/sgjs2013070068 低渗透性情况下注浆方法研究* 陈亮晶,牛建东 (湖南省地质建设工程(集团)总公司,湖南长沙410014) [摘要】在地基处理、防渗椎幕等工程中经常会用到注浆工艺,由于地层渗透性的差异,会出现不同的注浆效果,特 别对于低渗透性岩土层,可能会因吸浆量过少而达不到注浆效果.根据水文地质理论和实践经验,在填土地基、缺 陷桩基等低渗透性情况下,对加固处理采用压力循环注浆的方法和工艺进行初步探讨. [关键词]地基;低渗透性;注浆;加固;施工技术 [中图分类号]TU753 【文献标识码]A [文章编号]1002-8498(2013)07-0068-03 Research on the Grouting Methods in Low Permeability Conditions Chen Liangjing Niu Jiandong (Hu'nan Geological Engineering Corporation Changsha Hu'nan 410014 China) Abstract:Grouting methods are often used in foundation treatment and construction of impermeable curtains.The grouting effects may be different due to different ground permeability.Particularly for low permeability geotechnical layer the grouting effect may not be achieved because the amount of slurry suction is too little.According to the hydrogeology theory and practice experience this paper gives a preliminary discussion on the methods and processes of strengthening low permeability foundations such as fill foundations defected piles using pressure cycle grouting. Key words:foundation;low permeability;grouting;strengthening;construction 填土地基具有不均匀性和密实度差的特点,极理,单位时间压入水量与岩土层的渗透性、试验水 易产生不均匀沉降影响其正常使用.在某些桩基头、井径、试验长度等有关: 施工中,由于施工过程中处理不当,造成孔底沉渣 Q=2kHL/In(L/r.) (1) 过厚、混凝土离析、振捣不密实形成蜂窝麻面等现 式中:k为渗透系数;L为试验长度;H为试验水头 象,影响了桩基质量.对此,一般采取注浆的方法 差;为钻孔半径. 或者压力注浆处理.根据实践经验结合理论知识, 总的压入水量V=Qt. 提出压力循环注浆工艺,采用压力循环注浆处理填 对压水试验钻孔而言,其渗透性是由地层的特 土加固、桩基补强等,均取得了较好效果.据此,压 点决定的,试验长度、钻孔半径是注浆前确定的,若 力循环注浆可以推广到锚...
施工技术 2016年5月下 104 CONSTRUCTION TECHNOLOGY 第45卷第10期 D0I:10.7672/8js2016100104 低液限粉土路基填料施工技术研究 秦李林 (太原市住房和城乡建设委员会,山西太原030009) [摘要]低液限粉土具有液限低、塑性指数小、黏粒含量少、强度和水稳定性差等工程特性,施工中易被压碎,扬尘 大,不易成型,碾压时易产生叠瓦状推移和分层现象.在广源高速公路工程建设中,通过对含水量、松铺厚度、碾压 工艺等参数对压实度的影响研究,形成了低液限粉土路基施工关键技术,经实践证明,低液限粉土作为高速公路路 堤填料是完全可行的,能够满足高速公路路基施工质量标准. [关键词]公路工程;高速公路;低液限粉土;施工技术;研究 [中图分类号]U416.1 [文献标识码]A [文章编号]1002-8498(2016)10-0104-04 Study on Construction Technology of Low Liquid Limit Silt Subgrade Filling Qin Lilin (Taiyuan Housing and Urban and Rural Construction Committee Taiyuan Shanxi 030009 China) Abstract:Low liquid limit silt has characteristics of low liquid limit small plasticity index low clay content bad strength and water stability and poor engineering properties.It is easy to be crushed in construction with big dust and hard to be shaped.It is also easy to produce the phenomenon of tile load and delimitation during rolling.In Guangyuan expressway engineering construction through study on the effect of moisture loose paving thickness and rolling process parameters to degree of paction the key construction technologies of the low liquid limit silt subgrade are put forward.Engineering practice proves that low liquid limit silt as embankment is feasible which can meet the quality standard of highway roadbed construction. Key words:road construction;expressway;low liquid limit silt;construction;study 0引言 施工的角度.通过分析低液限粉土工程特性,将试 广灵至浑源高速公路第六合同段位于山西省验研究与工程实践相结合,分析含水量、松铺厚度、 大同市广灵县内,根据自然条件,该地区土质属低压实遍数等参数对压实度的影响,探讨各...
2016年10月下 施工技术 第45卷第20期 CONSTRUCTION TECHNOLOGY 45 D0I:10.7672/sjs2016200045 不等高张弦三角管桁架带柱累积滑移施工技术 杨向阳,王金辉,刘帅,刘汇东,桑晓景 (中建三局集团有限公司,湖北武汉430074) [摘要]新疆国际会展中心二期工程钢结构施工工期紧迫,现有施工场地条件受限制,气候条件恶劣.针对上述施 工难点,对本工程区中心展厅提出了不等高张弦三角管桁架带柱累积滑移施工技术.阐述了滑移总体思路及带 柱滑移施工流程,通过深化设计合理布置轨道梁及滑移轨道、液压爬行器、滑靴:并通过带柱滑移施工模拟分析,对 滑移轨道及桁架设置合理的支撑架,保证了滑移过程中钢柱与桁架的整体稳定性,实现了滑移到位后滑移钢柱与 下部钢柱的准确对接. [关键词]钢结构;桁架;不等高张弦三角管桁架;数值模拟;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2016)20-0045-04 Accumulative Sliding Construction Technology of Unequal Height Triangular Truss-string Structure with Column Yang Xiangyang Wang Jinhui Liu Shuai Liu Huidong Sang Xiaojing China Construction Third Engineering Bureau Co.Lad.Wuhan Hubei 430074 China) Abstract:The construction period of the 2nd phase project of Xinjiang International Exhibition Center is very short the construction site conditions are limited and the climate conditions are worse.According to all these construction difficulties accumulative sliding construction technology of unequal height triangular truss-string strueture with column is proposed which is in the area of the central exhibition room of B zone.In this paper the general thought and the construction process of the cumulative sliding technique with column are introduced and explained.The sliding track rail beams hydraulic crawlers and sliding shoes are rationally arranged through the detailed design.The supporting frame for the sliding rail and truss is reasonably designed and set are ensured through the construction...
施工技术 2012年11月上 58 CONSTRUCTION TECHNOLOGY 第41卷第376期 不同底模对砂浆强度的影响 孙永民,胡长明,宋方方 (西安建筑科技大学土木工程学院,陕西西安710055) [摘要]通过对不同底模的水泥砂浆试块和混合砂浆试块的强度试验研究,在相同稠度情况下,采用不同底模时, 水泥砂浆强度比混合砂浆强度影响大.研究结果表明:钢底模比砖底模的离散性小;随者稠度变化,水泥砂浆采用 钢底模比采用砖底模影响因素大,但混合砂浆采用钢底模比砖底模影响因素小. [关键词]砌体结构;砂浆;强度;稠度;试验分析 [中图分类号]TU578 [文献标识码]A [文章编号]1002-8498(2012)21-0058-04 Effect of Different Bottom Formwork on Strength of Mortar Sun Yongmin Hu Changming Song Fangfang (School of Civil Engineering Xi'an University of Architecture and Technology Xi'an Shaanxi 710055 China) Abstract:The strength of cement mortar and mixed mortar with different bottom formwork were studied by tests.Results show that under the same consistency the change of bottom mould has bigger influence on the strength of cement mortar than mixed mortar.Specifically the discreteness of mortar strength with steel formwork is smaller than that with brick formwork.With the change of consistency the cement mortar strength shows higher variation with steel formwork than with brick formwork.However for mixed mortar strength the influence of consistency with steel formwork is smaller than that with brick formwork. Key words:masonry construction;mortar;strength;consistency;test analysis 0引言 本试验砂浆类型为水泥砂浆和水泥混合砂浆 砌体结构在我国有悠久历史,由于我国的现(掺稠化粉或白灰膏),水泥砂浆采用32.5级硅酸 状,砌体结构仍在房屋建筑中占有相当大的比例,盐水泥,混合砂浆采用42.5级硅酸盐水泥,水泥用 而砌筑砂浆由于在砌体工程中主要起黏结、衬垫和量为210kg/m3.试验中选用的砂为中砂,含泥量 传递应力的作用,因此工程中往往把砌筑砂浆的强4%.拌制砂浆的水为不含有害杂质的洁净水.制 度检验作为性能控制的主要因素.由于砂浆强度作试块中的底模采用钢底模、铁底模和普通黏土砖 评定时砂浆试块强度与试块制作时的底模有很大底模. 关系,因此现行国家标准《砌...
施工技术 2011年7月上 94 CONSTRUCTION TECHNOLOGY 第40卷第344期 《地下防水工程质量验收规范》 GB50208一2011内容简介 郝玉柱,李玉屏 (山西建筑工程(集团)总公司,山西太原030002) [摘要]《地下防水工程质量验收规范》GB50208一2011已于2011年4月发布,重点对《规范》的适用范围、基本框 架及重点内容进行了阐述.修订后的《规范》将更适合新技术、新材料发展的需要,将对全面提高地下防水工程质 量起到积极作用. [关键词]规范修订;地下防水工程;防水等级 [中图分类号]TU761.11 [文献标识码]A[文章编号]1002-8498(2011)13-0094-02 Introduction of Code for Acceptance of Construction Quality of Underground Waterproof GB50208-2011 Hao Yuzhu Li Yuping Shanxi Construction Engineering(Group)Co.Taiyuan Shanxi 030002 China) Abstract:Code for acceptance of construction quality of underground waterproof GB50208-2011 has been approved on April 2011.The authors focus on the application basic framework and key elements of the code.The revised code will be more suitable for the development of new technologies and new materials and will play a positive role in prehensively improving the quality of underground works. Key words:code revision;construction of underground waterproof;waterproof grade 1修订背景 设、施工单位进行防水工程的质量控制和验收工作. 随着地下空间的开发利用,地下工程的埋置深2《规范》的适用范围 度越来越深,工程所处的水文地质条件和环境条件 《规范》适用于房屋建筑、市政隧道、防护工程、 越来越复杂,地下工程渗漏水的情况时有发生,严重地下铁道等地下防水工程质量验收. 影响了地下工程的使用功能和结构耐久性.为进一 地下工程是建造在地下或水底以下的工程建筑 步适应我国地下工程建设的需要,促进防水材料和 物和构筑物,包括各种工业、交通、民用和军事等地 防水技术的发展,遵循“材料是基础,设计是前提, 下建筑工程.房屋建筑地下工程是指住宅建筑、公 施工是关键”的原则,确保地下防水工程质量,特修 共建筑、文教建筑、商业建筑、旅游建筑、交通建筑和 订《地下防水工程质量验收规范》GB50208一2011 各类工业建筑等地下室结构和基础;市政隧道是指 (以下简称《规范》). 修建在城市地下用作敷设各种市政设施地下管线的 根据《建筑工程施工质量验收统一标准》 隧道,以及城市公路隧道、城市人行隧道等工程;防 GB50300-2001规定,建筑工程质量应指施工质量, 护工程是指为战时防护要求而修建的国防和人防工 设计质量...
2010年10月 施工技术 第39卷第10期 CONSTRUCTION TECHNOLOGY 97 12钢筋电渣压力焊施焊技术与经济效益 吴成材,宫平2,林志勤3,魏惠昌,阮章华5 (1.陕西省建筑科学研究院,陕西西710082: 2.陕西省第三建筑工程公司,陕西西710054:3.陕西建工尊团公司工程承色四部,陕西西710003: 4.河南省建焦作锦华苑项目部,河南焦作454000:5.四川省第六建筑有限公司,四川成都610081) [摘要]铜筋电渣压力埠为我国1962年首的一项施工技术,现在已经在全国获得广泛的应用.但是,当铜筋直 径为12mm时,钢筋细,辉夹具夹后,钢筋容易曲,从而存接头中产生指位、气孔、夹渣等焊总缺. 本支遥过试研究,提出用子中12钢筋电压力焊施焊技术和焊参数,在陕西、河南、四川等省的多个工程中 试用,头展量舍格,科取得庭呼的经清益 [关键词]12筋:电压力焊:经清故益 [中图分类号]TU758.162 [立战标识码]A [交章编号]1002-8498(2010)10-0097-02 Electroslag Pressure Welding Technique and Economic Effect of l2 Reinforcing Steel Bar Wu Chengcai Gong Ping Lin Zhiqin' Wei Huichang' Ruan Zhanghua (1.Shaanxi Building Scientific Research Institute Xi'an Shaanxi 710082 China: 2.Shaanxi Prorince 3rd Building Construction Co.Xi'an Shaanxi 710054 China: 3.The 4th Contrator Dirision of Shaanxi Construetion Engineering Group Co. Xi'an Shaanxi 710003 China: 4.He'nan 4th Building Construction Engineering Co. Jiaozuo He'nan 454000 China: 5.Sichuan No.6 Construction Co.Ld.Chengdu Sichuan 610081 China) Abstract:Electroslag pressure welding was a first inventive construction technology at 1962 in China and is used widely in our country now.When the diameter of reinforcing steel bar is 12mm it is thinner and soft.The steel bar may be bended when welding apparatus is clamped.Therefore some welding defects of misalignment gas pore slag inclusion may be appeared in the welding joints.In this paper the electroslag pressure welding technology and welding parameters for 12mm diameter reinf...
施工技术 2017年7月上 106 CONSTRUCTION TECHNOLOGY 第46卷第13期 D0I:10.7672/8js2017130106 U型干湿井点降水疏干施工技术 徐左屏 (上海智富建设工程有限公司,上海200336) [摘要]为了改善淤泥质粉土、黏土及低渗透性软土降水疏干效果,采用U型干湿井点真空负压降水和常压热风对 流疏干工艺,能有效实现土体前期真空降水、后期常压疏干,热风干湿对流、虹吸蒸发除湿目的.从根本上提高淤 泥质粉土、黏土及低渗透性软土空隙潜水和细颗粒附着水分降水效果,在相同井点数量、间距和真空负压条件下有 效缩短降水周期、改善疏干效果、加快土体固结. [关键词]基坑;降水;U型干湿井点;真空负压降水;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2017)13-0106-04 Construction Technique of U-type Dry and Wet Well-point Dewatering XU Zuoping (Shanghai I&F Construction Projects Limited Company Shanghai 200336 China) Abstract:In order to improve the water precipitation effect of mucky clay silt and low permeability of soft soil using U-type dry and wet well vacuum precipitation and atmospheric convection sparse dry process which can effectively achieve the soil pre vacuum precipitation and late atmospheric sparse stem tube dry convection and tube heat steam engine.Fundamentally it can improve the diving and fine particles attached water precipitation effect of mucky clay silt and low permeability of soft soil.If the well point number spacing and vacuum conditions is the same it can effectively shorten cycle of precipitation improve the effect of drainage and accelerate the consolidation of soil. Key words:foundation excavation;dewatering;U type dry and wet well point;vacuum negative pressure precipitation;construction 0引言 真空泵连接实施真空负压降水,又能敞开口部与电 随着轻型井点和深井降水技术的普遍应用,出吹风机连接,实施常压热风对流蒸发疏干.由于U 水量和降水效果越来越被人们所关注,但由于低渗 型干湿井点降水疏干工艺采用双管U形井点构造、 透性软土降水效果受地质土层和土体渗透系数影 大直径双滤管滤水、单枪双...