2016年6月上 施工技术 第45卷第11期 CONSTRUCTION TECHNOLOGY 61 D0I:10.7672/8js2016110061 飞行区场道红砂岩地质施工及变形监测技术 任继荣 (山西机械化建设集团公司,山西太原030009) [摘要]针对南方地区某机场红砂岩填料条件和高填方、大土石方量的特点,研究红砂岩填料特性,提出了施工方 案,很好地解决了红砂岩高透水性、易风化、遇水膨胀和崩解等工程难点,同时对施工过程进行了变形监测和施工 效果检测,保证了飞行区建设质量要求. [关键词]机场;跑道;红砂岩;变形;监测;施工技术 [中图分类号]U416.1 [文献标识码]A [文章编号]1002-8498(2016)11-0061-04 Construction Technology and Deformation Monitoring of the Runways with Red Sandstone Geological Condition in Flight Area Ren Jirong Shanxi Mechanisation Construction Group Company Taiyuan Shanxi 030009 China) Abstract:Based on some characteristics of a airport engineering in southern area including red sandstone filler high embankment large earthwork this paper introduces red sandstone characteristics puts forward construction scheme which solves some engineering difficulties including high permeability easy weathering expansion and disintegration encountering water and so on.Meanwhile deformation monitoring and construetion effect detection are implemented in construction process which ensures construction quality in flight area. Key words:airports;runways;red sandstone;deformation;monitoring;construction 红砂岩在我国南方地区分布较广,具有高透水亚层,呈红色、深红色或褐色,是南方地区典型的红 性、遇水软化、极强风化崩解性、强度干湿循环变化 砂岩土质.场区地下水局部赋存于低洼地的含砾 大等特点,一般不宜作为填筑材料.民用机场工程黏土的孔隙中和强风化基岩的裂隙中.历史年度, 占地面积大,土石方量动辄都在数百万立方米以 降雨量最大为2996.1mm 最小为923.7mm. 上,不论从经济还是技术角度,场区土石方不可能 2场区红砂岩填料土体性质指标 大规模外弃或借方填筑,施工中要尽量做到挖填量 1)现场红砂岩样品呈灰红色或褐红色,湿密度 平衡,同时机场飞行区跑道填筑质量要求又高,因 2.03~2.21g/m3 含泥量<5%,含盐量<0.3%.检 此如何做好飞行区红砂岩土质填料的施工成为一 测其矿物质含量9%左右...
施工技术 2013年4月上 80 CONSTRUCTION TECHNOLOGY 第42卷第7期 D0I:10.7672/sgj2013070080 风积砂地层隧道导向水平旋喷桩超前 加固与预留核心土台阶法施工技术* 晏启祥,刘罡1,耿萍1,朱家稳2 (1 西南交通大学交通隧道工程教育部重点实验室,四川成都610031; 2.中铁二局集团第一工程有限公司,责州贵阳550003) [摘要]为解决风积砂地层隧道施工难题,提出了风积砂地层隧道施工的导向水平旋喷桩超前支护技术和先行施 作仰拱边墙结合部预留核心土台阶法开挖技术,前者的技术关键是导向技术,后者的技术关键是上下台阶施工长 度、上下核心土临时加固质量以及两侧墙角仰拱结合部快速跟进时机.通过现场工艺试验、数值模拟以及工程施 工实践表明:采用水平旋喷柱超前支护与预留核心土台阶法联合施工,能有效控制风积砂地层的变形,确保施工安 全和施工进度. [关键词]隧道工程;风积砂地层;导向水平旋喷桩;预留核心土台阶法;监测 [中图分类号]TU74;U455 【文献标识码]A [文章编号]1002-8498(2013)07-0080-05 Application of Horizontally-oriented Rotary Jet Grouting Pile and Bench Construction Along Reserved Core-soil Technology in Aeolian Sand Strata Tunnel Yan Qixiang' Liu Gang' Geng Ping' Zhu Jiawen2 (1.MOE Key Laboratory of Transportation Tunnel Engineering Southwest Jiaotong University Chengdu Sichuan 610031 China;2.China Railway Erju First Engineering Co. Ltd. Guiyang Guizhou 550003 China) Abstract:To solve these problems it was proposed to use advanced support technology with horizontally- oriented rotary jet grouting piles and the excavation method of pre-construction of the inverted arch-side walls junctions with reserved core-soil bench.The key technology for the former is the orientation technology and for the latter are the construction lengths of the upper and lower benches the mass of the upper and lower core soil for temporary strengthening and accurate follow-up timing for the inverted arch- side walls junction construction.Field testing numerical simulation and construction pract...
2015年1月上 施工技术 第44卷第1期 CONSTRUCTION TECHNOLOGY 115 D0I:10.7672/sgjs2015010115 顶管遇地下韧性障碍物处理施工技术分析 陈晓晨,黄金明 (上海市城市排水有限公司,上海200233) [摘要]因地下环境不确定因素多,顶管工程经常需要穿越一些障碍物,如何经济有效地处理障碍物是顶管施工技 术中的难题之一.以白龙港南线东段工程为例,对顶管遇韧性PE给水管采取的土体预加固、顶管机刀盘改制等技 术进行了探讨,取得了良好的效果. [关键词]地下工程;顶管;障碍物;PE给水管;处理措施 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2015)01-0115-03 Construction Technology Analysis on Underground Obstacle Treatment in Pipe-jacking Construction Chen Xiaochen Huang Jinming (Shanghai Municipal Sewerage Co.Ltd.Shanghai 200233 China) Abstract:It's difficult for obstacle treatment in'pipe-jacking construction because of uncertain factors. Based on engineering practice this paper discussed technologies of soil pre-reinforcement and cutter head reform for pipe-jacking construction.Engineering practice shows that good effect is obtained. Key words:underground;pipe-jacking;obstacle;PE pipe;treatment 作为一种成熟的非开挖施工工艺,顶管施工法工影响较大.地下清障是在不开挖地表的前提下 具有施工精度高、综合成本低、环境污染少等优点,清除障碍物,有人工清障和机械清障两种方式.前 近年来已广泛应用于城市给排水、电力等市政管道者一般需配置气压舱,工人在气压下打开顶管机面 工程.但是,由于地下环境的不确定性、地下障碍 板上的人孔清除障碍物,操作环境恶劣,且管道 物探查技术的局限性等原因,顶管工程经常会遇到 口径需适合施工人员进入;后者则通过改装掘进机 地下障碍物.如何经济有效地处理这些障碍物仍 刀盘,机械切磨障碍物,多用在已知障碍物的情 是顶管施工技术中的一大难题.根据工程实际和 况下. 现场条件,顶管施工遇到障碍物后,可采取避让障 地下机械清障在顶管工程中常用于清除低强 碍或清除障碍两种处理方式. 度的刚性物质,如木桩、混凝土块等,处理具有一定 1)避让障碍就是通过调整管道轴线避让障碍 强度的韧性物质的实例并不多见.本文以具体的 物,一般用于障碍物具有实用价值而无法清除的情 工程实践为例,对顶管机清除560中口径PE给水 况.调整轴线往往会造成成本的增加和工期的延管的技术措施进行探讨. 误,甚至如果是在顶进过程中遇到障碍物,还需倒 1工程概况 拔顶管机1,增加了施工难度和风险.鉴于此种情1.1工程背景 况,在不影响管道功能的前提下,顶管地下错位对 白龙港南线东段工程敷设2根长约26km的污 接技术也有所应用. 水干管,采用顶管法...
[关键词]脚手架;附着式电动施工平台;装修工程;施工技术 [中图分类号]TU767 [文献标识码]A [文章编号]1002-8498(2014)02-0076-04 ApplicationoftheAttachedElectricConstruction PlatforminExteriorDecoration Shi Ying, Liu Kun (GeneralContract Departmentof Bejing ConstructionEngineringGroup Co.,Ld.,Bejing100055,China) Abstract:According to a practical engineering of C4 industrial plants, the application of attached electric construction platform in exterior decoration was described in detail.This technology can solve the problems of cantilevered roof decoration and bump facade decoration,meanwhile,it can offer conditions for reasonable construction deployment.The workability,structural characteristics and safety points on site were introduced.By parison of structural performance and economy, pared with traditional scaffold and electric basket,the attached electric construction platform can short period,improve effect and decrease scaffold cost. Key words:scaffolds;attached electric construction platform; decoration; construction 1工程概况 饰。
2016年4月下 施工技术 第45卷第8期 CONSTRUCTION TECHNOLOGY 55 D0I:10.7672/8js2016080055 阿拉尔市体育中心体育馆钢屋盖结构设计 刘佳,何挺,虞崇钢 (浙江东南网架股份有限公司,浙江杭州311209) [摘要]阿拉尔市体育中心体育馆主体结构为钢筋混凝土框架结构,屋面部分为落地空间管桁架结构.重点介绍 了屋盖结构体系以及在分析和设计中涉及的关键问题.采用3d3sl1.0和MIDAS/Gen8.0两种软件进行整体计算 并相互校核.进行了非线性整体稳定性分析,同时采用ANSYS软件对该结构的关键节点进行分析.计算分析表 明,结构构件的应力比、变形及结构整体稳定性均满足设计要求. [关键词]体育馆;空间管桁架;风洞试验;数值模拟;结构设计 [中图分类号]TU391 [文献标识码]A [文章编号]1002-8498(2016)08-0055-05 Structural Design on Steel Roof of Alaer Sports Center Gymnasium Liu Jia He Ting Yu Chonggang Zhejiang Southeast Space Frame Co.Ld.Hangzhou Zhejiang 311209 China) Abstract:Reinforced concrete frame structure and spatial tube trusses are adopted in Alaer Sports Center Gymnasium.The key issues of design and research about the structure were introduced.3d3s11.0 and MIDAS Gen 8.0 are used as the software for calculation of the overall while checking each other.And the stability of the steel structure considering the geometric nonlinearity was analyzed.The key joints were investigated by ANSYS software.The results show that the stress ratio deformation of structure member and stability of overall structure ean meet the design requirements. Key words:gymnasiums;spatial tube truss;wind tunnel test;simulation;structural design 1工程概况 阿拉尔市体育中心体育馆占地面积11970m2 总 建筑面积17480m2 总高度为35.0m 南北方向长 152.6m 东西方向(中部)最宽109m 最窄处43.95m 呈南北向“梭形”布局,主要由室内比赛篮球场和训 练篮球场组成,可容纳最多观众人数2956人. 体育馆从结构形式可分为两部分:主体结构为 钢筋混凝土框架,屋面结构采用落地空间管桁架结 构,2种结构相互独立.其中钢筋混凝土框架部分 图1体育馆结构 为地上1层,局部3层,空间管桁架结构最大跨度 Fig.1 The gymnasium structure...
[关键词]高层建筑;深基坑;腰梁;临时支撑;拆除 [中图分类号]TU753.6[文献标识码]A[文章编号】1002-8498(2013)06-0090-03 WailingBeamRemoval ofDeepFoundationExcavationfor SouthernSunHotel inAbuDhabi GuoHai,PengFei,ChengYa'nan,Wang Lishang,Haytham (China State Construction Engineering Corporation Middle East L. L.C.) Abstract:Based on construction of Southern Sun Hotel in Abu Dhabi,this paper analyzes temporary support removal method of foundation excavation during the main building construction.By selecting reasonable removal time,optimizing construction process,selecting correct dismantling method and choosing heavy machine, the wailing beam is removed successfully. Key words:tall buildings; deep foundation excavation; wailing beam; temporary support; removal 1工程概况 1.1地理位置 南方阳光酒店项目(SouthermSunHotel)位于阿 联酋阿布扎比市中心,临近波斯湾海滨仅约数百 米,自然水位为地下3.5m。
施工技术 2016年4月下 106 CONSTRUCTION TECHNOLOGY 第45卷第8期 D0I:10.7672/8js2016080106 防火建筑外保温模板技术研究* 姚通稳 (山西职业技术学院材料与建筑工程学院,山西太原030006) [摘要]在建筑物外保温系统防火性能要求下,结合现有外保温系统和保温材料特点,设计出一种新型保温材 料——防火建筑外保温模板.通过对防火隔离设计部件料浆流动性、试件抗折、抗压强度和湿密度进行检测及数 据分析,确定生产配料方案;对由企业生产并自然养护28d保温模板进行保温与施工性能综合分析,该制品满足墙 体混凝土浇筑的施工与建筑物节能要求. [关键词]防火建筑:外保温:试验:配合比:应用 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2016)08-0106-04 Research and Application of Fire Resisting Building External Insulation Formwork Technology Yao Tongwen School of Material and Civil Engineering Shanxi Polytechnic College.Taiyuan Shanxi 030006.China) Abstract:Under the requirements of insulation outside the building and fire protection performance bined with the characteristics of existing external insulation system and insulation materials a new kind of insulation material namely fire resisting building external insulation formwork was designed. Through the detection and analysis on the slurry fluidity of fire isolation ponent the pressive and flexural strength and wet density the suitable mix proportion was chosen.By the prehensive analysis on insulation and construction performance it is pointed out that this ponent can meet wall concrete pouring and building energy-saving requirement. Key words:fire resisting building;external insulation;testing;mix proportion;application 0引言 系统的质量难以保证. 近年来,建筑物外保温材料市场中,新产品层 因而,本次试验以保温板材的A级防火、高效 出不穷,如泡沫混凝土保温板、微孔水泥保温板、聚 保温为技术导向,以降低生产成本和建筑施工成本 氨酯复合保温板、复合胶粘剂压制无机保温板、泡 为出发点,研制出一种新型外保温材料——防火建 沫玻璃、发泡陶瓷等,究其本质而言,...
2014年5月上 施工技术 第43卷第9期 CONSTRUCTION TECHNOLOGY 81 D0I:10.7672/5j52014090081 鄂尔多斯体育场转换析架节,点试验研究* 赵一婕,张其林,杨彬,雷克1,陈昭荣,尹海鹏2,施泓2 (1.同济大学土木工程学院,上海200092;2.中国建筑设计研究院,北京100044) [摘要]为考察鄂尔多斯体育场钢屋盖转换桁架节点在设计荷载下的受力性能,对该钢桁架上、下弦的两个节点进 行了缩尺试验研究.试验表明上、下弦节点在设计荷载下均未发生破坏,节点整体仍处于弹性状态,大部分区域的 应力水平较低,下弦节点的最终破坏模式为受压杆件及相连节点板的局部屈曲.随后建立了考虑材料和儿何非线 性的有限元模型,计算结果与试验中的测点数据吻合良好.试验和有限元的分析结果均表明,鄂尔多斯体育场钢 桁架上下弦节点在设计荷载下具有足够的刚度和强度,满足工程应用的要求. [关键词]钢结构;转换桁架:缩尺试验:屈曲;有限元分析 [中图分类号]TU323.4 [文献标识码]A [文章编号]1002-8498(2014)09-0081-05 Experimental Research on the Joints of Transfer Truss of Erdos Stadium Zhao Yijie' Zhang Qilin' Yang Bin Lei Ke' Chen Zhaorong' Yin Haipeng2 Shi Hong2 (1.College of Ciril Engineering Tongii University Shanghai 200092 China; 2.China Architecture Design Research Group Beijing 100044 China) Abstract:A reduced-scale experimental study on upper and lower chord joints of Erdos Stadium transfer truss was carried out in order to investigate their structural behavior under design load.Based on the experimental result it was found that both of these two joints remained elastic status with no broken under design load and the stress level of most area was relatively low.The lower chord joints showed a local buckling at pressive tube together with the adjacent panel as a failure mode.Then a finite element model considering material and geometric non-linear effects was built and it showed a good agreement with the test results.Both of the experimental and finite element analyses demonstrate that the upper a...
施工技术 2010年8月 82 CONSTRUCTION TECHNOLOGY 第39卷第8期 鄂尔多斯东胜体育中心体育场钢结构安装技术 王留成,朱邵宁,李建洪,程瑞华 (济江精工锅结构有限公司,浙江绍兴312030) [摘要]鄂尔多斯东胜体育中心体育场为可开合屋盖斜拉索悬挂空间钢管桁架体系,由固定屋盖与巨拱形成整体 受力体系,是目前国内结构最复杂、规模最大的开闭式体育场.从巨拱安装、活动屋盖适应性施工、斜索张拉、施工 计算分析等方面介绍了工程难点及现场施工施.指出巨拱采用分段吊装的方式,拉索采用分阶段、分批、循环、 顺序张拉的方案施工;另外,采取对台车轨道预变形、轨道后固定、机械台车后固定的措施增强台车运行的适应性. [关键词]鄂尔多斯东胜体育中心;体育场;开合屋盖结构;斜拉索;施工技术 [中图分类号]TU758 [文献标识码]A[文章编号]1002-8498(2010)08-0082-05 Installation Technology for Stadium Steel Structure of Erdos Dongsheng Sports Center Wang Liucheng Zhu Shaoning Li Jianhong Cheng Ruihua (Zhejiang Jinggong Steel Building Co.Lad.Shaoxing Zhejiang 312030 China) Abstract:Stadium of Erdos Dongsheng Sports Center is retractable tubular truss roof system stayed by inclined steel strands.The whole stress bearing system is formed by fixed roof cover and huge arch structure which is the most plicated and largest retractable stadium in China till now.The project difficulties and the on-site constructional facilities from perspectives of huge arch installation adaptive construction for retractable roof stretch of inclined strands and construction calculation analysis are introduced.It is pointed out that segmentation hoisting method is used for huge arc and cycle tensioning by stage batching and in order is applied for tensile strands.Furthermore in order to assure the adaptability of trolley operation the methods of pre-deformation for trolley track and later fixture for track and mechanical trolley are adopted. Key words:Erdos Dongshen...
[关键词]高层建筑;建筑机械;塔式起重机;防撞分析;交叉作业 [中图分类号]TU71 [文献标识码】A [文章编号]1002-8498(2012)18-0086-05 ConstructionTechnologyAnalysisandApplicationStudyof TowerCraneGroupinSkycourtsProjectinDubai Tian Sanchuan,Wang Lishang,Liu Hui,Deng Zhongshan (Middle East L. L. C,China State Construction Engineering Co.,Ld.,Dubai,UAE) Abstract;Tower crane group operation is often encountered in large-scale construction project.Proper construction safety, the costs and benefits. Based on the parallel operation practice of 12 tower cranes in tall building groups of Skycourts project in Dubai, the authors briefly introduced the key points and methods through the analysis of influencing factors and research of safety measures. Key words;tall buildings; construction equipment; tower cranes; collision avoidance analysis; crossover operation 1工程概况 阿联酋天阁超大高层建筑群项目位于迪拜,占 地面积4万㎡²,总建筑面积41.6万m²,为1层地下 室,1层首层,3层裙房以及21层标准层组成的大型 公寓及办公楼(见图1)。
施工技术 2015年5月上 112 CONSTRUCTION TECHNOLOGY 第44卷第9期 D0I:10.7672/sgjs2015090112 超高能级强夯处理低含水量湿陷性黄土原理研究 李保华,郭伟林,安明 (山西机械化建设集团公司,山西太原030009) [摘要]通过击实试验,进行了击实功对最佳含水量和最大干密度的影响分析和不同强夯能级、施工参数的单位土 体击实功和轻型、重型击实试验的单位土体击实功的分析比较,探讨了超高能级强夯处理低含水量湿陷性黄土的 原理.试验证明,夯击功能越大,干密度越大,而相应的最优含水量越小;在一定夯点间距下,夯击能级越高、夯击 数越多,土体所获得的夯击功能越大;超高能级强夯所达到的夯击功能,已超过了重型击实试验的击实功能的近一 倍,将超高能级强夯用于处理低含水量的湿陷性黄土是可行的. [关键词]地基;强夯;湿陷性黄土;击实功;原理;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2015)09-0112-03 Research on Principle of Ultra-high Energy Level Dynamic Compaction Treating Low Water Content Collapsible Loess Li Baohua Guo Weilin An Ming (Shanxi Mechanized Construction Group Company Taiyuan Shanxi 030009 China) Abstract:Through paction test this paper analyzes the influence of paction function on the optimum water content and maximum dry density.Then the unit paction function is pared under different dynamic paction levels and construction parameters both in light and heavy paction test. The principle of treating low water content of collapsible loess with ultra high energy level dynamic paction is discussed.The test results show that firstly when the paction function increase the dry density is bigger and the corresponding water content is small;secondly in a certain space of tamping under higher paction energy level and more paction times the paction function will be greater;thirdly the function of ultra high energy level dynamic paction is nearly two times of that of the heavy paction ...
施工技术 2016年8月上 82 CONSTRUCTION TECHNOLOGY 第45卷第15期 D0I:10.7672/8js2016150082 超高扣件式钢管满堂脚手架承载性能试验研究* 陆征然12,郭超3,李帼昌3,陈志华4,赵亮,于琳 (1.沈阳建筑大学管理学院,辽宁沈阳110168;2.吉林建筑大学土木工程学院,吉林长春130118; 3.沈阳建大学土木工程学院,宁沈阳110168;4.天津大学建筑工程学院,天津300072) [描要]如何准确地对超高扣件式钢管满堂脚手架的穆定承载力进行计算是工程中圣解决的一个技术唯题.视 有的各种满堂脚手架承我力计算方法中,询没有考满堂脚手中上部荷戴通过顶层水平杆“偏心传”管童杆的 影响及架体顶部在受到偏心局部雄载不利情况下承载力的(以上两种编心作用可以统称为偏心荷戴)降低.此 外,在整个建筑结构施工期间,满堂脚手架曼到的上邮施工荷载形式直杂,扣件将会发生松脱、滑移、断梨县至失酸 的情况.在分析满堂脚手架结构及爱力特点的基础上,考总满堂脚手架中爱到的“偏心荷载”作用以监部分扣件在 使用过程中发生破坏、失等不利工况,进行了细不同工况下的满堂脚手架原型试,深入地研究了此类传构体 系的承我性能. [关键词]脚手架;满堂脚手架;偏心荷载;承我力;试验 [中图分类号]TU731.2 [献标识码]A[章编号]1002-8498(2016)15-0082-04 Testing Research on the Bearing Capacity of Fastener Steel Tubular Full Hall Formwork Scaffold Lu Zhengran.2 Guo Chao3 Li Guochang3 Chen Zhihua Zhao Liang' Yu Lin' (1.School of Management Shenyang Jianzhu University Shenyang Liaoning 110168 China; 2.School of Civil Engineering Jilin Jianzhu Unirersity Changchun Jilin 130118 China; 3.School of Civil Engineering Shenyang Jianzhu Unirersity Shenyang Liaoning 110168 China; 4.School of Ciuil Engineering Tianjin Unitersity Tianjin 300072 China) Abstract:How to calculate the bearing capacity of steel tubular full hall formwork scaffold was currently an urgent problem to be solved.All of the existing calculation methods not only didn't consider the effect of eccentric transfer of upper load from horizontal tubes to upright tubes but also didn't consider the bearing capacity reduction of scaffold under eccentric local heaped load what wer...
2010年7月 施工技术 第39卷第7期 CONSTRUCTION TECHNOLOGY 59 超高塔类设备钢框架变形分析与应用 闵泽鹏 (湖南省工业设各安装有限公司,湖南株洲412000) [摘要]通过对超高塔类设备钢结构框架变形因素分析和常用施工方法比较,从结构的节点形式、施工工艺、施工 过程中的外加载荷等方面述了该类结构制造的主要方法与注意事项,提出了控制工程质量的指施. [关键词]塔;钢框架;变形分析;施工工艺;外加载荷 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2010)07-0059-03 Deformation Analysis and Application of Super High Tower Equipment Steel Frame Min Zepeng Hu'nan Industrial Eguipment Installation Co.Ltd.Zhuzhou Hu'nan 412000 China) Abstract:Through analysis of deformation factors and paring of mon construction methods on super high tower equipment steel frames the author shows the main methods and attention items for the prefabrication of this structure and puts forward engineering quality control measures from aspects of structure joints forms construction technology applied loading during the construction process ete. Key words:tower;steel frame;deformation analysis;construction technology;applied loading 高层建筑主体结构以及其它许多场所采用的钢结结构安全和玻璃钢内筒安装.因此,变形控制是该类 构一般呈四边形,其稳定性较好,施工工艺也相对成工程的关键,本文就此进行研讨. 熟.而在化工行业,一些非承压塔类设备的钢结构框1变形因素分析 架往往呈多边形,其稳定性相对较差,且易于变形. 导致框架结构变形的主要因素有结构、工艺和外 如一造粒塔结构形式为钢框架内置玻璃钢简体,加载荷三个方面1,具体表现为:焊缝金属熔敷量、焊 框架呈24边形,高97.6m 内径16m.立柱(24根)由接工艺、构件制作偏差与组装偏差、外加荷载. 16节组成,分别为I63a~120a 每段长6m 上下立柱内 1.1焊缝金属熔敷量 翼缘平齐,外侧变截面(见图1),立柱接头上端设 支撑与立柱、立柱下端与连接板之间的焊缝均为 20mm厚连接板.立柱之间设环形水平支撑与斜撑 T形缝.如图2所示,焊缝间隙大,则金属熔敷量大, (以下简称“支撑”),每2m一层. 横向收缩量大,其估算公式为: 4B=0.2A /80.5b 臂品、 以良总 式中:4B为对接接头横向收缩量(mm);A 为焊缝横 外脚于架 截面积(mm3);8为板厚(mm);b为根部间隙(mm). 当b=2mm 腹板厚度8=8mm 焊缝厚度=6mm 时,立柱腹板方向收缩量4B一1.4mm 对应的该节立 柱...
施工技术 2012年3月下 64 CONSTRUCTION TECHNOLOGY 第41卷第361期 超高变径烟囱工程无井架液压滑模施工技术 王纯岩 (中国二十冶集团有限公司,上海201900) [摘要]结合梅钢1780热轧项目烟卤工程实例,从施工设施、施工工艺到关键工序的质量控制,对超高变径烟卤工 程施工所采用的无井架液压滑模施工技术进行了详细阐述.重点介绍了施工平台组装、荷载试验、简身及内衬施 工、航空标志施工、操作平台拆除等施工工艺.同时指出应重点控制模板收分时中心点校正、中心位移、平台扭转 失稳、混凝土水平裂缝及断裂、混凝土表面缺陷等,并给出解决措施. [关键词]烟卤;模板;液压滑模;无井架;平台;施工技术 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2012)06-0064-06 Construction of Non-derrick Hydraulic Sliding Formwork of Super-high Variable Diameter Chimney Engineering Wang Chunyan (China MCC20 Group Co. Lad.Shanghai 201900 China) Abstract:Combining with the practice of chimney engineering in Meisteel 1780 hot rolling project the construction technology of non-derrick hydraulic sliding formwork of super-high variable diameter chimney engineering is indicated in detail from construction facilities construction technology and quality control for key sequence.The construction technologies of platform assembly loading test construction for tube body liner and aviation mark operation platform demolition are introduced.It is pointed out that the centre point correction while formwork closing and opening center displacement platform instability horizontal cracks and surface defects of concrete should be controlled mainly and corresponding solving methods are put forward. Key words:chimneys;formwork;hydraulic sliding formwork;non-derrick;platform;construction 1工程概况 砖内衬,提升架外挂滑模施工混凝土. 梅钢1780热轧工程有3幢烟肉,高度均为2筒身施工设施介绍 105m 上口内径为4.0m 筒身壁厚由360~160mm 筒身选用无井架液压滑模施工工艺,施工设施 沿高度呈阶梯变化,采用C30混凝土浇注...
2010年1月 施工技术 第39卷第1期 CONSTRUCTION TECHNOLOGY 83 超长钻孔灌注桩深部缺陷分析处理 谢石连1,梁治国2,张弘1 (1.上海城市管理学院,上海200438;2.上海市基工程公司,上海200002) [摘要]宁波某大桥主墩基础采用1500mm钻孔灌注桩,桩长90m.其中一根桩施工时因导管堵塞进行了二次灌 注,发生深部缺陷事故.考虑缺陷以上桩段部分不能满足设计要求,需进行深部缺陷检测和处理.由低应变动测、 钻芯法等手段检测确定产生深部缺陷的部位,提出采用桩体内注浆加固的处理方案.介绍了超长钻孔注桩钻孔 取芯、注浆等施工技术.实施结果表明,桩身强度和桩身质量均达到要求,采用柱体内注浆加固的方法处理超长钻 孔灌注桩深部缺陷合理有效. [关键词]桥梁工程;钻孔灌注桩;深部缺陷处理;桩体内注浆加固;钻孔取芯 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2010)01-0083-03 Analysis and Treatment of Super-long Bored Pile Deep Defect Xie Shilian' Liang Zhiguo? Zhang Hong' (1.Shanghai Urban Management College Shanghai 200438 China; 2.Shanghai Foundation Engineering Co.Shanghai 200002 China) Abstract:1 500mm bored piles are adopted in some bridge in Ningbo whose length is 90m.In construction of some bored pile deep defect is caused because of secondary pouring owing to pouring pipe occlusion.According to the condition that pile segment over the defect can't meet design requirements it is necessary to monitor and treat the deep defect.The defect position is determined by low-strain dynamic test and core drilling method thus treatment of pouring in pile is suggested.Authors introduce construction technology of core drilling and pouring of super-long bored piles.Results show that the pile strength and quality can meet design requirement the grouting in piles method is efficient in deep defect treatment of super-long bored piles. Key words:bridge engineering;bored pile;deep defect treatment;grouting in pile;core drilling 1工程概况 于60...
2016年7月下 施工技术 第45卷第14期 CONSTRUCTION TECHNOLOGY D0I:10.7672/8js2016140009 超长大跨度结构施工阶段温度效应研究 范重,李夏1 2,刘家明1,张宇,邢超,刘学林 (1.中国建筑设计研究院,北京100044;2.北京科技大学土木与环境工程学院,北京100083) [摘要]结合某大型航站楼工程,对超长大跨度结构在施工阶段的温度效应问题进行较为深人的探讨.在确定超 长大跨度结构施工阶段正、负温差时,考虑太阳辐射引起钢结构温升以及混凝土收缩当量温降的影响.根据超长 大跨度结构的施工进度计划,得到混凝土结构各楼层正、负温差的变化规律,考察施工起始时间对结构正、负温差 的影响.分别对施工期间混凝土楼板,框架柱以及大跨度钢屋盖的内力与变形特点进行分析,考察温度作用沿楼 层高度的变化情况.通过对各施工步序进行精细模拟,较为真实地反映了结构温度效应随施工进度的变化情况, 为超长大跨度结构设计与施工验算提供科学依据. [关键词]钢结构;超长混凝土结构;混凝土收缩;温度效应;施工技术 [中图分类号]TU393.3 [文献标识码]A [文章编号]1002-8498(2016)14-0009-08 Study on Temperature Effect of Super Length and Large Span Structure During Construction Fan Zhong' Li Xia.2 Liu Jiaming' Zhang Yu' Xing Chao' Liu Xuelin' (1.China Architecture Design Research Group Beijing 100044 China;2.School of Ciril and Enuironmental Engineering University of Science and Technology Beijing Beijing 100083 China) Abstract:This paper probes the temperature effect of super length and large span structure during construction period based on a large airport terminal project.The temperature rising of steel caused by solar radiation and the equivalent temperature dropping resulted from concrete shrinkage are considered when determining the positive and negative temperature variation of the super length and large span structure.According to the construction schedule of large span structure this paper obtains the change rules of the positive and negative temperature in each concrete structure floor by which the influence of the construction start...
[关键词]地下工程;深基坑;淤泥;支护桩;锚索;施工技术 [中图分类号]TU753[文献标识码】A[文章编号〕1002-8498(2015)13-0008-04
inDeepSiltLayer ChenKai',DingXiaochun²,HeYuanjin²,Chen Hanbin',Li Peilin',Gui Fang' (1.China Construction Third Engineering Bureau Co.,Ltd.,Guangzhou,Guangdong 510600,China; 2.Shenzhen ConstruetionQuality Supervision Center,Shenzhen,Guangdong518000,China) Abstract:Based on engineering practice,this paper studied and resolved the problems encountered in the actual construction of the deeplayer of silt from aspects of earth excavation,construction of retaining piles and anchor cable, summarized construction experience and proposed treatment measures. Basin excavation bined with island excavation were adopted in the construction which were the high-efficient way to solve the problems. Key words:underground;deep foundation excavation;silt;supporting piles;anchor cables;construction
越高,其相应的基坑工程也越来越深。
施工技术 2017年7月下 104 CONSTRUCTION TECHNOLOGY 第46卷第14期 D0I:10.7672/sgjs2017140104 超浅埋隧道短台阶临时仰拱法施工技术 邓洪亮,马丽斌,郭树祥,赵树杰 (北京工业大学建筑工程学院,北京100124) [摘要]黄董坡隧道以超浅埋方式下穿21公路.为保证施工安全,采用既有线路改移、中管棚支护及小导管超 前注浆预加固措施和短台阶临时仰拱法施工,提高了围岩的自稳能力,控制了隧道在施工过程中的沉降和收敛,保 证了隧道的施工安全.监测结果表明:拱顶下沉、水平收敛、地表沉降最大值分别为19.57 16.78 20.17mm 均在 规范规定的控制基准范围之内,隧道围岩处于稳定状态,施工过程隧道没有出现任何开裂和塌陷等现象,说明所采 用的施工技术措施合理可行,方案安全可靠. [关键词]地下工程;隧道;监控;测量;施工技术 [中图分类号]U455 [文献标识码]A [文章编号]1002-8498(2017)14-0104-04 Construction Technology of Short Step Temporary Invert Method for Ultra Shallow Burried Tunnel DENG Hongliang MA Libin GUO Shuxiang ZHAO Shujie (School of Architecture Engineering Beijing University of Technology Beijing 100124 China) Abstract:Huangdongpo tunnel goes through the S201 highway in an ultra shallow buried way.In order to ensure the safety of the construction the existing lines changed the middle pipe shed support and the small pipe pregrouting reinforeement measures and the short step temporary inverted arch method are used for construction.The stability of surrounding rock is improved the settlement and convergence of the tunnel in the construction process are controlled and the construction safety of the tunnel is ensured.The monitoring results show that the crown settlement and horizontal convergence the maximum surface subsidence were 19.57 16.78 20.17mm which are within the control range of reference standard the tunnel wall rock is stable and the construction process of the tunnel without any crack and collapse phenomen...
[关键词]钢结构;网架;提升;格构柱;整体稳定性;数值模拟 [中图分类号]TU311.41[文献标识码]A[文章编号]1002-8498(2013)02-0023-02 Overall Stability Analysis of the Latticed Column as Support of Lifting Han Miaobing',Wang Yuling',Zhang Xiaoyong',Chen Haizhou',Zhang Qilin² (1.China Construction Eighth Engineering Division Co.,Lad.,Shanghai 200120,China; 2.School of Civil Engineering,TongjiUniversity,Shanghai 200092,China) AbstractThe integrated numerical model for lifting frame and laticed column is established,which are the key pairt of the lifting system for the COMAC installed plant with 30 000m².The overall stability of the integrated system is analyzed. The simulation results show that the biggest stress of the latticed column is individual and has no influence on integrity.And through detailed simulation analysis,local strengthening with stiffening rib is applied on the parts with high stresses. Key wordssteel structures; space truss; lifting;laticed column; overall stability; simulation 中国商用飞机有限责任公司(Commercial Aircraft Corporation of ChinaLtd.,简称 COMAC)部 装厂房是COMAC总装制造中心的重要厂房之一, 也是最大的厂房。
施工技术 2012年2月上 64 CONSTRUCTIONtECHNOLOGY 第41卷第358期 超大跨度异形折叠提升式防火卷帘门安装技术 何纯涛,王岱,艾晓东 (中建三局第二建设工程有限责任公司,湖北武汉430074) [摘要]鉴于目前国内商业型建筑的美观要求及其结构的复杂性,大跨度、超大跨度、异形大厅、异形洞口的构造越 来越多,在后期消防工程防火卷帘的安装中,如何在保证其美观的条件下,完成复杂结构和特殊需求的安装成为一 项新的课题.以沈阳盛世长安商业广场工程为例,介绍一种新型折叠提升式防火卷帘的工艺原理及操作流程. [关键词]卷帘门;防火;安装;整体提升式 [中图分类号]TU758.13 [文献标识码]A [文章编号]1002-8498(2012)03-0064-02 Installation Technology on Fireproofing Rolling Shutter Door with Super-large Span and Special-shape Folded Improving Type He Chuntao Wang Dai Ai Xiaodong (No.2 Construction Engineering Co.Lad.China Construction Third Engineering Bureau Wuhan Hubei 430074 China) Abstract:In view of beautiful requirement and plex structure of domestic mercial building there have more and more large or super-large span structure and special-shape hall and special-shape hall.In the installation of fireproofing rolling shutter door how to plete installation of plex structure in the condition of beauty and special requirement is a new study task.Taking the Shenyang Shengshi Chang' an Square as a example the authors introduce construction principal and installation process of a new type of fireproofing rolling shutter door with folded improving type. Key words:rolling shutter door;fireproofing;installation;integrate hoisting type 1工程概况 沈阳盛世长安商业广场工程总建筑面积 顶柳 、一无机布帘固定架 定滑轮 270175m2 地下3层,地上5层,首层层高8m 标准 传动卷轴 无机防火卷帘布 层高5.3m 防火卷帘安装总面积为22860m2 根据 金属条 金属拉环 现场实际情况结合图纸和美观的要求,在大跨度扶 楼面 底托 梯和特殊形状区域的防火隔断采用折叠提升式防 日降下状态 火卷帘,其安装面积为2412.8m2. 丝 顶棚 无机布固定架 2工艺原理及特点 传动卷轴 定...