2016年5月下 施工技术 第45卷第10期 CONSTRUCTION TECHNOLOGY D0I:10.7672/8js2016100005 武汉绿地中心顶模系统公共资源管理实践 罗轩忠,郑承红,李俏,李锐,赵云 (中建三局第二建设工程有限责任公司,湖北武汉430074) [摘要]结合武汉绿地中心项目的总承包管理需要,总结了顶模系统公共资源管理的内容、现状以及管理方法.重 点对本工程顶模系统总平面及作业面管理、垂直运输管理、临水临电管理进行了分析. [关键词]高层建筑;顶模系统;公共资源管理;垂直运输 [中图分类号]TU712.1 [文献标识码]A [文章编号]1002-8498(2016)10-0005-03 Public Resource Management Practices of Jacking Formwork System in Wuhan Greenland Center Luo Xuanzhong Zheng Chenghong Li Qiao Li Rui Zhao Yun The Second Construction Co.Ltd.of China Construction Third Engineering Bureau Wuhan Hubei 430074 China) Abstract:Combining with the need of general contract management in Wuhan Greenland Center project the paper summarizes the content status and management method for the jacking formwork system public resource management.The authors introduces emphatically the total plan and the management of work surface of the jacking formwork system and management of vertical transportation temporary water and power. Key words:tall buildings;jacking formwork system;public resource management;vertical transportation 顶模系统作为近年来超高层结构施工的新型 近年来,一些知名超高层建筑在顶模系统管理 模架体系,相较于传统的爬模、提模系统有着显著上已经取得了丰厚的成果,但由于地区、结构形式 的速度、成本及安全优势,但由于它集各种公用资等多方面因素的差异,管理措施可复制性不强,绿 源于一身,是一个复杂的集成体系.如果管理不力 地中心项目在顶模前期管理中曾遇到以下易忽视 或协调不当,势必影响这些优势的正常发挥,甚至 的一些问题:①土建分包任意堆料,影响其他作业 成为制约工期、增大投入的累赘.本文结合武汉绿 及通行,平面利用效率低下;②专业分包交叉作业 地中心项目顶模系统公共资源管理实践,阐述施工 协调不到位,矛盾突出,安全隐患多;③塔式起重机 总承包项目公共资源管理的重要性,以期对同类项 和临水临电在同一时段集中使用,供不应求;④施 目起到一定的指导意义. 工电梯在上下班高峰期等待时间长,各路人马争抢 1绿地项目曾经历、易忽视的几个问题 现象严重,极易引发纠纷. 该项目顶模平台...
2014年9月上 施工技术 第43卷第17期 CONSTRUCTION TECHNOLOGY 21 D0I:10.7672/5j52014170021 武汉绿地中心超深超大基坑工程施工及安全控制分析 刘惠涛,吴贤国1,王震2 (1.华中科技大学土木工程与力学学院,湖北武汉430074; 2.中建三局第二建设工程有限责任公司.湖北武汉430074) [摘要]结合武汉绿地中心深基坑开挖工程实例,介绍了工程支护体系、开挖方案监测点的布置、开挖过程中监测 项目与所采用的监测预警值.根据工程实测结果,从支护结构内力、地下连续墙深层水平位移、地下水位及原有铁 路和长江大堤变形规律等方面,分析了基坑开挖本身的安全及对周边环境的影响.最后,探讨了保证基坑开挖安 全的工程措施. [关键词]深基坑;监测;环境影响;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)17-0021-05 The Construction Safety Control Analysis of Super-deep and Super-large Foundation Excavation for Wuhan Greenland Center Project Liu Huitao' Wu Xianguo' Wang Zhen (1.School of Civil Engineering Mechanics Huazhong Unitersity of Science Technology Wuhan Hubei 430074 China; 2.The Second Construction Co.Ltd.of China Construction Third Engineering Bureau Wuhan Hubei 430074 China) Abstract:The engineering support system the arrangement of monitoring excavation scheme and the monitoring items with its warning value are introduced referring to the foundation excavation construction of Wuhan Greenland Center.Then the safety of the exeavation itself and influence on surrounding environment are analyzed in terms of the brace force deep diaphragm wall horizontal displacement underground water level and the original railway and the Yangtze River levee deformation law and so on. And the measures for safety of foundation excavation engineering are discussed at last. Key words:deep foundation excavation;monitoring;environmental effect;construction 1工程概况 1.2工程地质条件 1.1工程简介 根据勘察地质资料显示,项目所在地属...
施工技术 2015年2月下 26 CONSTRUCTION TECHNOLOGY 第44卷第4期 D0I:10.7672/5js2015040026 武汉绿地中心工程地下室底板高分子自粘胶膜 防水卷材预铺反粘施工技术 李家洪,徐汉涛,邓邦 (中建三局第二建设工程有限贵任公司,湖北武汉430073) [摘要]高分子自粘胶膜防水卷材的预铺反粘施工技术优点明显,在国内建筑领域的应用日趋广泛.结合武汉绿 地中心工程地下室底板防水施工实例,通过充分利用材料特点,科学合理地应用该项技术,在工程实践中取得了良 好的社会和经济效益. [关键词]高层建筑:地下室;底板:高分子自粘胶膜防水卷材;预铺反粘;施工技术 [中图分类号]TU761.116 [文献标识码]A [文章编号]1002-8498(2015)04-0026-02 Construction Technology of Polymers Self-adhesive Waterproofing Membrane with Pre-installed and Inverted Adhered Method in Wuhan Greenland Center Li Jiahong Xu Hantao Deng Bang The Second Construction Co.Ld.of China Construction Third Engineering Bureau Wuhan Hubei 430073 China) Abstract:Because of obvious advantages of pre-installed and inverted adhered method the polymers self- adhesive waterproofing membrane is widely used in the field of domestic architecture.Combining with the construction practice of Wuhan Greenland Center project basement waterproofing by making full use of the material characteristics and using the technology rationally and scientifically pre-installed and inverted adhered method of polymers self-adhesive waterproofing membrane has been successful applied in the engineering with good social and economic benefits. Key words:tall buildings;basement;floor;polymers self-adhesive waterproofing membrane;pre- installed and inverted adhered;construction 1工程概况 1)行走施工性高分子自粘胶膜防水卷材耐 武汉绿地中心工程是目前华中地区施工的最候表面层作为卷材保护层的设计,可让人直接行 高建筑项目,工程总建筑面积711982m2 主塔楼建走、施工. 筑高度636m. 2)耐穿刺性卷材的高分子片材不仅是胶粘 武汉绿地中心工程基坑离长江边仅200m 开挖 层的载体,...
施工技术 2010年7月 CONSTRUCTION TECHNOLOGY 第39卷第7期 武汉火车站大跨度枝状支撑空间曲 面钢结构卸载分析 王辉1,刘曙2,吕黄兵2,蒋官业2 (1.中建三局建设工程股份有限公司总承包公司,湖北武汉430064;2.中建钢构有限公司,广东深圳518040) [摘要]武汉火车站钢结构中央站房首次卸载区间(两个主拱支撑,主拱最大跨度116m 间距64.5m)网壳主体结 构安装完毕,通过下调螺旋式千斤顶的回程拆除临时支撑体系,主体结构将从设有临时支撑体系的施工受力状态 逐渐转化为设计受力状态.必须确定合理的卸载次序、卸载量,保持千斤顶的同步性才能保证网壳安全.考虑网 壳主体结构和临时支撑体系的相互作用及主体结构的稳定性,通过有限元模拟计算分析和施工实践,证明该卸载 方案是可行的. [关键词]武汉火车站:空间曲面;稳定性;卸藏 [中图分类号]TU758.15 [文献标识码]A[文章编号]1002-8498(2010)07-0004-03 Unloading Analysis of Large-span Dentritic Supporting Space Curved Surface Steel Structure in Wuhan Railway Station Wang Hui' Liu Shu2 LūHuangbing2 Jiang Guanye2 (1.General Contraction Company of CCTEB Wuhan Hubei 430064 China; 2.China Construction Steel Structure Co.Ltd.Shenzhen Guangdong 518040 China) Abstract:When the lattice shell structure in the first unloading area in steel structure center building of Wuhan Railway Station which is two main arch support with the maximum span of 116m and distance of 64.5m is finished to be installed the temporary support system is demolished by down adjusting the return of screw jack.So the main body structure will transfer forced state from construction to design. Rational unloading sequence and unloading value must be determined to keep the jack's synchronization to assure the lattice shell safety.By considering mutual action of the main body structure and temporary support system of the shell and stability of the main body finite element method simulation analysis is done.The analysis and construction pr...
2010年7月 施工技术 第39卷第7期 CONSTRUCTION TECHNOLOGY 13 武汉火车站中央站房大型胎架滑移技术 王宏,戴立先,刘家华,刘曙 (中建钢构有限公司,广末深圳518040) [摘要]武汉火车站钢结构采用大型桥建合一大跨度枝状支撑空间双曲面钢结构.根据结构外形特点,结合施工 现场条件,反复比较各种施工方案,最终确定了采用大型滑移胎架、高空原位安装法施工工艺,采用液压千斤顶机 构进行胎架滑移,计算机同步控制,成功将长41.1m 宽32.875m 高52m 单部重2740:的胎架进行滑移和用于结 构安装,取得了显著的社会效益和经济效益. [关键词】武汉火车站;胎架;滑移;液压千斤顶 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2010)07-0013-03 Movable Technology of Large Jig in Central Station Building of Wuhan Railway Station Wang Hong Dai Lixian Liu Jiahua Liu Shu China Construction Steel Structure Co.Lad.Shenzhen Guangdong 518040 China) Abstract:Wuhan Railway Station adopts long-span branchlike support space hyperboloid steel structure which tends bridge and building to be united.Sky-high in-situ installation method with large movable jig is determined to be used by paring repeatedly several construction schemes and basing on structure characteristics and construction in-situ conditions.The large movable jig with 41.1m length 32.875m width 52m height and 2 740 tons weight is moved by hydraulic jack and synchronously controlled by puter.The steel structure is installed successfully with this jig.Social and economic benefit is earned. Key words:Wuhan Railway Station;jig;movable;hydraulic jack 钢结构滑移施工按滑移对象的不同可分为胎架滑台千斤顶沿前进方向①轴对称布置,使移动同步均匀. 移法、结构主体滑移法以及结构主体、胎架整体滑移现场共布置4台拖拉千斤顶,设4个液压泵站,由1个 法.胎架滑移法是指在结构的拼装胎架下设置滑移装 中控台控制,使得发出的信号命令一致,实现同步. 置,每次拼装完一个单元后,滑移至下一位置组拼;结 拼装胎架(见图1)的移动由胎架底盘、滑道系统 构主体滑移法是指拼装胎架位置固定不动(一般位于 (走行机构、轨道、轨承梁、基础)加上千斤顶动力源来 建筑物端头),每次主体结构滑移拼装完毕后依次滑...
[关键词]预制装配式;剪力墙;吊装;防水;连接 [中图分类号]TU756[文献标识码]A[文章编号]1002-8498(2015)16-0054-03 ConstructionTechnologyofPrecastResidenceSystem ofaProjectinWuhan Chen Tingyong (Shenzhen Jianye Engineering Group Co.,Ld.,Shenzhen,Guangdong 518109,China) Abstract:Wuhan Yongqing business plex plot B B9 engineering uses shear wall structure system. The building facade is designed to use precast wall ponents.Exterior wall ponents have been pleted exterior decoration in precast factory.Through the optimization design of facade scheme, building structure design,hoisting technology design, connection design and forming and on-site installationresearchof exteriorwallponents,the projectispleted successfully,and the expected goal is stained. Over 85% of exterior wall decoration is done in factory which reduces the wet work on the construction site. Key words:precast; shear walls;hoists;waterproofing; connection 1工程概况件附着在剪力墙结构外侧,为非受力构件。
[关键词]地下工程;逆作法;地下连续墙;降水;施工技术 [中图分类号]TU753[文献标识码]A【文章编号]1002-8498(2014)07-0022-04 Construction Technology of Semi-inverseMethod of SkirtBuildingBasement of Some EngineeringinWuhan Cheng Haiyin,Lou Guodong,Fang Zhongmin (Zhongtian Construction Group Co.,Lad.,Hangzhou,Zhejang 310008,China) Abstract:Based on the engineering practice in Wuhan,construction technology of semi-inverse method of skirt buildingbasement and then constructed mainbuilding and skirtbuilding.Thispaperintroduced the technologyfromforming solt quality control,soilexcavation,waterproofing and formwork setting inhigh and lowstride,dewatering,construction ofone column withone pile.Engineeringpractice showed that this technology obtained good effect. Key words:underground; top-down method;diaphragm wall; dewatering; construction 1工程概况 武汉市老浦片商业及住宅项目工程总建筑面 积267000m²,建筑总高度139m,由3层地下室(局 部2层),6层裙楼主楼及3栋41层住宅塔楼组成。
施工技术 2012年11月上 82 CONSTRUCTION TECHNOLOGY 第41卷第376期 武汉大学近现代文物保护建筑修缮加固技术 张向东,肖胜利,夏琪,谷洪勋,赵刚2,任克彬2 (1.河南省建设集团有限公司,河南郑州450002; 2.河南省文物建筑保护设计研究中心,河南郑州450002) [摘要]武汉大学近现代文物保护建筑建成于20世纪30年代,由26栋建筑组成,为国务院第五批全国重点文物保 护单位“近现代重要史迹及代表性建筑”.为继续利用和保护,经报国家文物局批准对其进行全面修缮加固,行政 楼和宋卿体育馆为第1批实施的修缮加固项目.重点介绍了行政楼修缮加固方案设计和宋卿体育馆施工.为近 现代早期混凝土结构和砌体结构建筑的修缮加固积累了经验. [关键词]加固;近现代文物保护建筑;修缮;施工技术 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2012)21-0082-03 Renovation and Reinforcement Technique of Modern Heritage Building in Wuhan University Zhang Xiangdong' Xiao Shengli' Xia Qi' Gu Hongxun' Zhao Gang? Ren Kebin2 (1.He'nan Province Construction Group Co.Ltd. Zhengzhou He'nan 450002 China; 2.He'nan Antique Building Protection and Design's Research Center Zhengzhou He'nan 450002 China) Abstract:Modern heritage building in Wuhan University pleted in the 1930s includes 26 buildings in the 15 places.It is approved by the State Council to be listed among the fifth group of Important Cultural Heritage Under State Protection.They will be prehensively renovated to continue to use and protect after the approval by the State Administration of Cultural Heritage.And College of Engineering and SongQing Gymnasium bee the first projects to be renovated.This paper focuses on the renovation and reinforcement scheme of the College of Engineering and construction project of the SongQing Gymnasium.This research will contribute to strengthening and reconstructing modern early-age concrete structures and masonry structures. Key words...
[关键词]钢结构;钢连廊;椭球体;设计;复杂节点 [中图分类号]TU393.3[文献标识码】A[文章编号]1002-8498(2015)17-0001-04 DetailDesignandAnalysisofEllipsoidSteelCorridorofWuhan InternationalExpoCenter Lu Tong,Hu Zongyou,Ma Caiwang,Ye Chuang (Wuhan Construction Engineering Co.,Lud.,Wuhan,Hubei430023,China) Abstract;Starry Club of Intercontinental Hotel of Wuhan International Expo Center is super long-span and heavy ellipsoid steel corridor structure.The difficulties of detail design about the drawing of
positioning was solved by the technology of multiple software bination and application. Detail design of plex joints used the following methods:the expansion node region method, the node assembly simulation method, the transmission path method, the circular rotating method, the cross plate bearing method. Key words:steel structures; steel corridor;ellipsoid;design;plex joints
1工程概况星空会所 武汉国际博览中心二期一洲际酒店工程,采 用框架-剪力墙结构体系,建筑面积约22.7万m², 共21层,建筑顶标高101.700m,大底盘为5层半裙 房,东、西双塔楼顶部设有一颗璀璨明珠一星空裙房项 会所,其为超高大跨度重型椭球体钢连廊,内设18, 20层桁架+外包椭球面葵花形三向单层钢圆管网 壳,部分主桁架与双塔楼钢骨结构刚接,跨度42~图1建筑效果 45m,主桁架GJ1,GJ2底部各设有4根承载型屈曲Fig.1Architectural effect 约束斜支撑。
2011年5月下 施工技术 第40卷第341期 CONSTRUCTION TECHNOLOGY 55 武汉保利文化广场深基坑施工技术 吴长路 (中铁建工集团北京分公司,北京100070) [摘要]武汉保利文化广场工程基坑深度大,施工现场场地狭窄,周边环境及地质条件复杂,支护结构工作量大. 详细介绍了基坑采用支护柱及立柱桩、内支撑方案、支护桩及内支撑、岩溶水降水、土方开挖等施工方案的具体要 求及步骤.并对工程进行多参数观测达到信息化监测,为工程顺利实施提供有力保证.实践证明,施工措施效果 良好,有效解决了深基坑施工过程中的难题. [关键词]内支撑;岩溶裂陈水;中心岛:施工栈桥;施工监测 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2011)10-0055-04 Construction Technology of Deep Foundation Excavation in Wuhan Poly Culture Plaza Wu Changlu Beijing Branch of China Railusay Construction Engineering Group Bejing 100070 China) Abstract:At the plex surrounding environment and geological conditions foundation excavation of Wuhan Poly Culture Plaza has the characteristics whose construction site is narrow and the quantities of foundation excavation supporting is large.The concrete demands and steps of foundation excavation construction such as supporting piles and column piles internal supporting supporting piles and internal supporting karstic dewatering soil excavation are introduced.The information monitoring is realized by the monitoring of foundation excavation parameters to guarantee the construction going successfully.The result shows that construction has a good effect and construction difficulties are solved. Key words:inner support;karst fissure water;central island;construction trestle;construction monitoring 1工程概况 物距离地下室边线最近处约18m:基坑西面与洪广 武汉保利文化广场工程地下4层,地上主楼46 商务中心地下室接壤,并与该地下室范围线相距不 层,副楼20层,裙楼8层,副楼16-20层与主楼相 到2m 最近处仅一墙相隔;基坑西北面邻近华银大 连形成主、副楼连体建筑.工程建筑面积为厦,并与该大厦地下室范围线相距约7...
2013年9月下 施工技术 第42卷第18期 CONSTRUCTION TECHNOLOGY 15 D0I:10.7672/sgjs2013180015 武汉中心工程非落底式止水帷幕深基坑降水技术研究* 周鹏华,周杰刚,李继承,李鹏,王健 (中建三局建设工程股份有限公司,湖北武汉430064) [摘要]以武汉中心深基坑工程降水为例,介绍了非落底式止水帷幕深基坑降水技术在武汉地区长江I级阶地复 杂地质条件下的应用与效果,分析了降水对土体稳定性、土体强度的提高作用和对支护结构的有利影响,最后对降 水效果进行了评价. [关键词]高层建筑;深基坑;坑中坑;止水帷幕;深井;降水 [中图分类号]TU974 [文献标识码]A [文章编号]1002-8498(2013)18-0015-04 Research on the Composite Dewatering Technology of Waterproof Curtain and Dewatering Deep Wells in Wuhan Center Project Zhou Penghua Zhou Jiegang Li Jicheng Li Peng Wang Jian China Construction Third Engineering Bureau Co.Ltd.Wuhan Hubei 430064 China) Abstract:Taking the dewatering of deep foundation excavation in Wuhan Center project as example at the plicated geological conditions the application effect of posite dewatering technology of waterproof curtain(the diagram walls isn't insert the impermeable layer)and dewatering deep wells used to reduce groundwater level is introduced.The favorable effects of dewatering on the soil stability soil strength and enclosure structure are analyzed.The dewatering effect is estimated at the end. Key words:tall buildings;deep foundation excavation;pits in foundation-pit;waterproof curtain;wells; dewatering 0引言 防止底板突涌,保证基坑施工的顺利进行. 随着城市高层建筑的不断发展,出现了越来越 本文依托武汉中心深基坑降水工程,介绍了非 多的深基坑工程.深基坑开挖过程中,必须对地下 落底式止水帷幕深基坑降水技术的应用与效果,并 水进行有效处理,保证施工过程中基坑的安全和 分析了降水对土体稳定性、土体强度的提高作用和 稳定. 对支护结构的有利影响. 武汉地区大面积分布的是长江I级阶地(近代 1工程概况 冲积平原),地下水存在3种类型:上层滞水、潜水 武汉中心工程占地面积为28100m2 总建筑面 和承压水.通常采用竖向隔渗帷幕阻断上层滞水 积约为353800m2 主塔楼88层,建筑高度43...
[关键词]高层建筑;临时消防体系;绿色消防系统;疏散;安全管理;施工技术 [中图分类号]TU998.1;TU892 [文献标识码]A [文章编号]1002-8498(2016)05-0013-05 Key ConstructionTechnology ofTemporaryFireProtectionSystem forWuhan CenterProject DengWeihua,ZhouJiegang,WangJian,LiJianqiang,WuCha (China Construction Third Engineering Bureau Group Co.,Ltd.,Wuhan,Hubei 430064,China) Abstract:Based on temporary fire protection difficulty of Wuhan Center tower,this paper puts forward a fire protection system including facade division,grade pumping,water tank transfer,gravity supply,and uses formal fire protection system instead of temporary fire protection system to improve fire safety, ensures the zero gaps of fire protection system by seting the water tank at the top of frame.Variable frequency pump,rain waterrecyclingsystem,rationalfire protection systeminteractionof temporary and system consists of construction elevator,tower crane and pump pipe rack,which solves the evacuation problem of the tower.Finally,this paper introduces the safety management concept of temporary fire protection system ofWuhan Center project. Key words:tall buildings;temporary fire protection system;green fire protection system;evacuation; safety management;construction 1工程概况 重机及施工电梯平面布置如图1所示。
[关键词]高层建筑;上挂下承结构;监控;模拟;后评价 [中图分类号]TU974 [文献标识码]A [文章编号]1002-8498(2016)05-0022-05 Overall Monitoring and Post-evaluation Technology of the Upper Pulling andLowerCompressionStructureforWuhanCenterProject ZhouJiegang,LiJianqiang,Wu Chao,Wang Jian,Huang Dangyu (China Construction Third Engineering Bureau Group Co.,Lad.,Wuhan,Hubei 430064,China) Abstract:The outer frame above No.66 floor for Wuhan Center project is the upper pulling and lower pression structure which forms gradually,there are internal force redistributions with several times in the construction process and the whole system formed is plicated.In this paper,the authors monitor the stress and deformation in the construction process of the upper pulling and lower pression structure,which ensures the structure safety.The simulation results are conservative by parison of construction simulation analysis. The structure is in line with the design intent. And the simulation analysis of the construction process can be added to the analysis of the on-site actual conditions as a reference for the construction control. Key words:tall buildings;upper pulling and lower pression structure; monitoring; simulation; post evaluation 1工程概况 部加强桁架,整个施工过程中实现2次内力重分布 武汉中心工程塔楼地上88层,建筑总高度 (见图1)。
2017年6月上 施工技术 第46卷第11期 CONSTRUCTION TECHNOLOGY 53 D0I:10.7672/5j52017110053 橡胶粉改性沥青老化性能研究* 刘延军12,叶志刚,张玉贞1 (1.中国石油大学(华东)化学工程学院,山东青岛266580:2.中海石油炼化有限贵任公司,北京100029) [摘要]采用3种老化试验方法模拟橡胶粉改性沥青老化过程,系统评价了在不同条件下3种橡胶粉改性沥青老 化性能的差异,并通过红外光谱分析了老化过程对橡胶粉改性沥青分子结构的影响.结果表明,橡胶粉改性沥青 在老化后软化点升高,针人度降低;不同类型橡胶粉改性沥青,老化规律基本一致,但老化后的性能存在一定差异. 红外光谱分析显示,橡胶粉改性沥青在老化前后的分子结构变化主要是基吸收峰的变化,RTFOT老化对橡胶粉 改性沥青官能团的影响比较明显.由于橡胶粉脱硫过程中已引入较多带基或羧基的极性基团,脱硫橡胶粉改性 沥青在老化前后红外图谱中的羰基吸收峰差异很小,其抗老化性能也相对较好. [关键词]公路工程:橡胶粉;改性沥青;老化性能;研究 [中图分类号]U414 [文献标识码]A [文章编号]1002-8498(2017)11-0053-04 Study on the Aging Performance of Crumb Rubber Modified Asphalt LIU Yanjun.2 YE Zhigang' ZHANG Yuzhen' (1.College of Chemical Engineering China University of Petroleum Qingdao Shandong 266580 China; 2.CNOOC Oil Petrochemicals Co.Ld.Beijing 100029 China) Abstract:Three kinds of aging experimental methods are used to simulate the aging process of crumb rubber modified asphalt.The different performance of three kinds of erumb rubber modified asphalt on aging behavior was evaluated in different conditions and the influence of aging process on molecular structure was analyzed by IR.The results show that the soft point will be enhanced and the penetration will be decreased associated with aging process of crumb rubber modified asphalt.For different kinds of erumb rubber modified asphalt the aging rule is similar and the performance is different after aging. Infrared spectra analysis showed that the change of molecular structure of crumb rubber modified asphalt a...
[关键词】地下工程:自嵌式加筋挡土墙:数值模拟;稳定性 [中图分类号】TU476.4[文献标识码】A[文章编号]1002-8498(2012)08-0088-05 NumericalSimulation andAnalysis onStabilityofSelf-anchored ReinforcedRetainingWallUnderRainstorm Guo Junhui', Wang Songjiang', Cheng Weiguo² (1.He'nan Electric Power Surey &Design Intie,Zhengzhou,Henan450007,Chin; 2. Jiangsu Uni-sareblock Co., Ld.,Nanjing. Jiangsu 210005, China) Abstract;Combined with the practice project, the deformation characteristic and stability of sel-anchored reinforced retaining wall under rainstorm by means of finite element analysis is studied. The diferent stress and deformation features,displacement and mechanical properties of geogrids are pared with normal condition. The results show that the retaining wall has large deformation. Earth pressure at the back of wallincreased evidently on the places where stiffned by geogrid. There are some tension stress zones between geogrid in the reinforced retaining wall. And tension stress zones expand significantly afer the damage of geogrid. Above conclusion is confirmed by the field survey and analysis on collapse accident of the reinforced retaining wall after rainstorm. Key words:underground;self-anchoredreinforced retaining wall ( SRRW);numerical simulation; stability 0引言周世良等对饱水格栅加筋土挡墙的结构特征进 自嵌式加筋挡土墙(self-anchoredreinforced行了数值分析。
[关键词】钢结构;桁架;预拼装;吊装;施工技术 [中图分类号】TU758.15 [文献标识码]A [文章编号]1002-8498(2015)02-0038-04 GiantDoor-shaped SteelStructureInstallation TechnologyofWuxiHenglongSquare Shen Shije,LiuYang,Li Ligang,Pan Wei (China Construction First Group Construction&Development Co.,Lid.,Beijing100102,China) Abstract;The skirt buildings of Wuxi Henglong Square prehensive development project have three giant door-shaped steel structure,which have large body,high clearance,large single ponent weight, difficult installation and other characteristics. Through the analysis and implementation for key measures of door-shaped steel structure member section,preassembly,hoisting the steel column,integral lifting of trusses,installation measurement,welding sequence and slab reinforcement, the giant door-shaped truss construction period, safety and economic benefits are assured. Key words;steel structures;trusses;preassembly;hoists;construction 1工程概况 无锡恒隆广场综合发展项目地处无锡市中心 型桁架1 巨型桁架2 区域,裙楼为大商业。
施工技术 2015年10月下 66 CONSTRUCTION TECHNOLOGY 第44卷第20期 D0I:10.7672/sgj82015200066 无锡万象城圆润天幕钢结构施工技术* 曾范永12,赵邦会3,叶军3 (1.江苏建筑职业技术学院建筑工程技术学院,江苏徐州221116; 2.中国矿业大学力学与建筑工程学院,江苏徐州221008; 3.深圳市金鑫钢结构建筑安装工程有限公司,广东深圳518117) [摘要]无锡万象城圆润天幕钢结构为单层网壳结构,矩形杆件通过刚性节点连接而成,支撑由树形柱和铸钢件组 成.通过研究刚性节点及矩形杆件,形成特色制作方法.同时介绍钢结构网壳的地面拼装和吊装,利用SAP2000 结构分析设计软件对天幕钢结构的卸载过程进行相应的计算,制定合理的卸载方案,为整个工程的圆满完成提供 了重要保证. [关键词]钢结构;刚性节点;矩形杆件;卸载;施工技术 [中图分类号]TU758 [文献标识码]A [文章编号]1002-8498(2015)20-0066-03 Steel Structure Construction of Vientiane City Rounded Canopy in Wuxi Zeng Fanyong.2 Zhao Banghui Ye Jun' (1.Scholl of Civil Engineering Jiangsu Jianzhu Institute Xuzhou Jiangsu 221116 China; 2.School of Mechanics Civil Engineering China University of Mining and Technology Xuzhou Jiangsu 221008 China;3.Shenzhen Jinxin Steel Structure Building Installation Engineering Co.Ltd.Shenzhen Guangdong 518117 China) Abstract:The steel construction of Vientiane City rounded canopy in Wuxi is a single spatial grid structure.The rectangular bars are connected by rigid joints.Support is posed of tree columns and steel castings.By studying rigid joints and rectangular bars characteristic production methods formed.It also introduced ground steel mesh shell assembly and lifting and SAP2000 structural analysis and design software was used for the unloading process corresponding calculations of steel canopy which provided an important guarantee for the successful pletion of the whole project. Key words:steel structures;rigid joints;rectangular ba...
2016年7月下 施工技术 第45卷第14期 CONSTRUCTION TECHNOLOGY 109 D0I:10.7672/8js2016140109 无轴式摩天轮结构成型施工过程分析* 陈恒超1,代跃强2,余流2.3 (1.遵义职业技术学院,贵州遵义563123;2.中国建筑第六工程局有限公司,天津300451; 3.天津市土木工程绿色建造与节能技术企业重点实验室,天津300451) [摘要]潍坊市白浪河大桥摩天轮工程采用创新的固定立体环状结构形式,是目前世界上直径最大的无轴式摩天 轮结构,实际工程少、施工经验不足.针对该工程独特的结构形式、复杂的施工方法,采用有限元分析软件MIDA/ GEN 根据“生死单元法”对该工程刚性轮盘结构成型过程进行施工过程跟踪模拟分析.结果表明:通过建立有限 元模型,对施工方案中各施工阶段进行预分析,给出了施工过程中的内力发展与变形规律,保证结构施工的安全顺 利进行. [关键词]钢结构;无轴式;摩天轮;成型施工;生死单元法;施工过程分析 [中图分类号]TU745 [文献标识码]A [文章编号]1002-8498(2016)14-0109-04 Analysis of Construction Process for Shaping the Non-spoke Type Ferris Wheel Chen Hengchao' Dai Yueqiang2 Yu Liu2.3 (1.Zunyi Professional Technology College Zunyi Guizhou 563123 China;2.China Construction Sixth Engineering Diwision Co.Ld.Tianjin 300451 China;3.Tianjin Corporate Key Laboratory of Green Construction Energy-saving Technology of Ciril Engineering Tianjin 300451 China) Abstract:The novel vertical ring-shaped structure was adopted in the architecture of Bailanghe Bridge Ferris Wheel in the Weifang city of which diameter is the largest in the world today.Considering the unique structure and difficulties to construct tracking the shaping process of rigid hub finite element analysis of construction process is implemented based on general structure analysis software MIDAS/ GEN adapting birth&death method.It is presented the internal force&deformation distribution during the shaping construction by employing nonlinear finite element method.Lots of data have been obtained as guideline...
施工技术 2012年4月上 38 CONSTRUCTION TECHNOLOGY 第41卷第362期 旋挖钻机成孔开放式后注浆灌注桩施工工艺 霍小妹 (山西四建集团有限公司,山西太原030012) [摘要]与其他成孔机型相比,旋挖钻机具有施工效率高、操作自动化程度高、垂直度控制好的优点.以实际工程 为例,介绍了旋挖钻机成孔和灌注桩后注浆施工的工艺特点,工艺原理,工艺流程,操作要点,注意事项和质量控制 措施.工程实践表明,灌注柱后注浆对于加固桩底沉渣及桩侧泥皮有非常好的效果,较大幅度提高了桩端、柱侧 阻力. [关键词]地下工程;柱基础;灌注桩;旋挖钻机;后注浆;施工工艺 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2012)07-0038-03 Construction Technology of Rotary Bored Pile with Open Post-grouting Huo Xiaomei China Shanxi Sijian Group Co.Ltd.Taiyuan Shanxi 030012.China) Abstract:Compared with other pore-forming machine types rotary drilling rig has advantages such as high construction efficiency high operation automation and verticality controlling easy.Based on some engineering the author introduces technological characteristics technological principle technological process operation points and quality control measures.Engineering practice shows that post-grouting of bored piles has good effect on strengthening piles and improving resistance of pile tip and pile side. Key words:underground;piles;bored piles;rotary drilling rig;post-grouting;construction 1工程概况 广的10项新技术之一. 运城恒大绿洲16~18号楼,拟建建筑物为地上3工艺原理 17层,设计采用桩基础,共布置钢筋混凝土灌注桩 1)旋挖成孔是通过钻机自有的行走功能和桅 258根,设计有效桩长36m、柱径700mm.采用旋挖 杆变幅机构使钻具能正确就位,利用桅杆导向下放 钻机成孔开放式后注浆工艺,桩端注浆量为 钻杆并将底部带有活门的桶式钻头放置到孔位,钻 1500kg 桩侧为750kg.场地土层主要为粉土、粉质 机动力头装置为钻杆提供扭矩,加压装置通过加压 黏土,稳定水位埋深为地表下6m左右. 动力头的方式将加压力传递给钻杆钻头,钻头回转 2工艺特点 破碎岩土,并直接将其装入钻头内,然后再由钻机 1)旋挖钻机成孔效率高,带有垂直度自动检测 提升装置和伸缩式钻杆将钻头提出孔外卸土,这样 调整、孔深数码显示等,整机操纵一般采用液压先 循环往复,不断地取土、卸土,直至钻至设计深度. 导控制、负荷传感,具有操作轻便、舒...