[关键词]巷道;支护;动压;卸压让压;锚索 [中图分类号】TU929【文献标识码】A[文章编号]1002-8498(2012)15-0079-05 Analysisof theSupportMethodforDeepRoadwithHighStress Level DynamicPressure Song Jinhu',Wei Sixiang²,Jing Hongwen”,Wang Chong”,Li Zhehao* (1.Institute of GeotechnicalEngineering,Southeast University,Nanjing,Jiangsu 210096,China; 2.No.12 Mine, Pingdingshan Coal Co.,Ld.,Pingdingshan, He'nan 467044,China; 3.State Key Labof Deep Rock and SoilMechanics and Underground Engineering,China University ofMining and Technology,Xuzhou,Jiangsu221008,China;4.Department of CivilandMaterialEngineering, He'nan University ofUrban Construction,Pingdingshan,He'nan 467044,China) Abstract:The pulley roadway and return airway of the Twelvth Mining of Pingdingshan Colliery Group Co.,Ltd. in the 31010 area are buried at more than 1 000 meters deep. And they are subjected to the dynamic pressure of the protection seam mining. By testing, they were found to be the deep roadway in soft rock with high stress level dynamic presure,for which the supporting scheme should be specially designed. The level of dynamic pressure was obtained by three-dimensional numerical calculation. And release and high strength rock bolts were used. Single columns were used locally to provide temporary support at extremely vulnerable locations. The field monitoring data shows that the pressure release method bined with the use of high strength rock bolts can successfully maintain the stability of the Key words:roadway; supports; dynamic pressure; pressure release; anchoring c...
施工技术 2012年1月上 48 CONSTRUCTION TECHNOLOGY 第41卷第356期 深水嵌岩桩埋钻处理新工艺 徐涛 (中建市政建设有限公司,北京100161) [摘要]通过对洛湛铁路长塘埠湘江特大桥桩基埋钻处理过程分析,介绍了吹砂法处理深水嵌岩桩基埋钻过程中 的构思及原理.通过方案比选,采用潜水员配合空压机抽出孔中碎石的方法打捞钻锤,保证了钻锤完好且护筒周 围也无碎石进人护筒内.桩体质量检测结果表明,该方法操作方便、设备简易、经济合理. [关键词]桥梁工程;柱基础;嵌岩桩;埋钻;吹砂法;施工技术 [中图分类号]TU753.3 [文献标识码]A[文章编号]1002-8498(2012)01-0048-02 New Treatment Technology of Drill Buried in Rock-socketed Pile Costruction Xu Tao China Construction Municipal Construction Co.Ltd.Bejing 100161 China) Abstract:Based on analysis of the buried pile drilling process of Changtang port Xiangjiang River bridge in Luoyang to Zhanjiang railway the author describes the ideas and principles of the blowing sand method adopted in buried deep rock-pile drilling process.According to parison the method by using pressor to extract gravel with the help of drivers is adopted which ensures the drill well.Test result shows that the method is convenient and economic. Key words:bridges;piles;rock-socketed piles;drill buried;blowing sand method;construction 1工程概况 下水水质对混凝土均无侵蚀性. 长塘埠湘江特大桥位于洛湛铁路湖南永州至3施工情况 广西洪唐段湘江河道上游,桥梁全场588m 主桥为3.1埋设护筒及钻孔方案的确定 36m2×56m36m4跨预应力混凝土变截面连续 1)河床面常年受河水冲刷,局部主河底覆盖有 梁.基础为钻孔灌注桩,桩径为1.5m 13~15号墩 小量砂卵石外,其他部位均为光滑的整体岩石,河 位于主河道中,水深8~12m 水流平缓,流量较大, 底高低不平,落差较大,护筒无法直接下到河床面 河床底覆盖一层薄薄的砂卵石.每个承台下设计 以下.根据现场实际情况,先采用1.8m冲击钻在 为6根嵌岩桩,桩基嵌岩深度为18~20m 采用冲击 桩基部位进行冲击找平护筒底面,确保钻进河底深 钻成孔. 度≥50cm. 2工程地质条件 2)护筒采用钢板现场制作,内径为1.8m.中心 桥梁区属丘间河谷阶地地貌,地形起伏小,江 偏差≤50mm 倾斜度≤1%.护筒顶与施工平台顶 北岸为堆积岸,阶地发育,发育有I Ⅱ级阶地,阶地 面平齐,护筒底深入河底岩石50cm 即护简底下到 平缓开阔;15号墩为冲刷岸...
施工技术 2017年7月上 72 CONSTRUCTION TECHNOLOGY 第46卷第13期 D0I:10.7672/8js2017130072 深大基坑咬合桩支护结构数值模拟研究 陈秀辉1 2 (1.福建省建筑科学研究院,福建福州350025;2.福建省绿色建筑技术重点实验室,福建福州350025) [摘要]以襄阳新天地基坑工程为对象,采用有限元分析软件ABAQUS对该基坑支护结构的变形过程进行数值模 拟,并与监测结果进行对比分析,得出模型建立是合理可行的.采用所建立的模型讨论了桩长、桩径、错索预应力 的设置对基坑变形的影响,并得出了规律性的结论. [关键词]深基坑;支护;桩;钻孔咬合桩;数值模拟;变形 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2017)13-0072-05 Numerical Simulation of Secant Pile Support Structure in Deep Foundation Excavation CHEN Xiuhui.2 (1.Fujian Academy of Building Research Fuzhou Fujian 350025 China;2.Key Laboratory of Fujian Green Building Technology Fuzhou Fujian 350025 China) Abstract:This paper used ABAQUS finite element analysis software to simulate deformation of a foundation excavation in Xiangyang.Compared with the monitoring data the model establish is reasonable and feasible.The pile length pile diameter and the prestressed anchor cable effect on the deformation were diseussed and the regularity conclusion was obtained. Key words:deep foundation excavation;supports;piles;secant pile;simulation;deformation 1工程概况 62.330m.各土层中粉质黏土与粉土透水性弱,粉 襄阳新天地项目位于襄阳市樊城区解放路一砂与圆砾具有强透水性,泥岩为隔水层.所以本工 桥桥头东北方位,占地面积5万m2 地上总建筑面程必须考虑地下水对基坑开挖的影响. 积17.1万m2 地下总建筑面积2万m2.共布设63施工工艺及协调变形 幢高层建筑物(其中4幢45层,2幢42层),6幢多 3.1施工工艺 层建筑物(商铺及幼儿园).高层建筑物下设3层 施工中一般采用全套管钻机进行施工,这种基 整体地下室,基础埋置深度为14.0m 采用桩筏基 坑围护结构的特点就是桩与桩之间形成相互咬合 础,基础桩采用旋挖成孔钻孔灌注桩. 排列形式.该工程咬合桩由钢筋混凝土桩(A桩) 2工程地质条件 和素混凝土桩(B桩)组成,A B桩间隔布设,一般 场地地面标高66.010~70.230m 相对高差约 先施作素混凝土桩后施作钢筋混凝土桩,B桩中的 4.12m 属汉江一级阶地.根据区域资料,场区范围 混凝土在初凝之前必须有足够的时间完成A桩...
施工技术 2010年5月 50 CONSTRUCTION TECHNOLOGY 第39卷第5期 深填方区地基强夯及褥垫层施工技术 生志勇,王涛,王晓松2,张宏林',赵济生 (1.江苏中兴建设有限公司西南公司,重庆400020:2.泰兴市天润建筑安装有限公司,江苏泰兴225400) [摘要]重庆恒大城首期二标段A区小高层项目场地为超深回填土区,平均回填深度30m 最深达45m 多为垃圾 废弃材料堆填.采用强夯法加固地基,并在基础底设900mm厚垫层,将用于路桥建设的土工格栅用于建筑物地 基,形成刚柔结合的地基基础,地基承载力和不均匀沉降满足要求,取得较好的综合经济效益. [关键调]地基处理;强夯;褥垫层;筏板基础;不均匀沉降 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2010)05-0050-03 Construction Technology of Dynamic Consolidation and Cushion for Foundation in Deep Filled Area Sheng Zhiyong' Wang Tao' Wang Xiaosong? Zhang Honglin' Zhao Jisheng' (1.Sounthtoest Branch of Jiangsu Zhongzing Construction Co.Ld.Chongging 400020 China; 2.Taixing Tianrun Construction Installation Co.Ltd.Taixing Jiangsu 225400 China) Abstract:High-rise building in a area of Chongqing Hengda City bid II)locates at supper-deep filled area and it is mainly filled with 30m depth garbage (45m in maximum).Rigid and soft pounding foundation is formed by reinforcing with dynamic consolidation method setting cushion with 900mm in thickness under the foundation and adopting geotechnical grille which is monly used in road and bridge projects.It proves that the bearing capacity and differential settlement of foundation can reach requirements and good economical benefit can be gained. Key words:foundation treatment;dynamic consolidation;cushion;raft foundation;differential settlement 1工程概况 夯后标高-1~-3m的地基承载力特征值f≥ 重庆恒大城首期二标段A区小高层项目,占地面250kPa 变形模量E0≥20MPa;夯后标高-3--6m的 积67000m2 共建27栋11层小高层建筑,建筑面积地基承载力特征值f≥200kPa 变形模量E0≥15MPa; 1...
[关键词】基坑;支护结构;地下连续墙:水平位移;监测 [中图分类号】TU753【文献标识码】A【文章编号】1002-8498(2011)23-0081-04 ConstructionTechnology in theSupportingStructure withFlexible SuperpositionforDeepFoundationExcavation Yan Xiaoxin',Li Zongming',Huang Yanzheng² (1.Civil andTraffic College,North China University of Water Resources and ElectricPower, Zhengzhou,He'nan 450011, China; 2.China Construction Seenth Engineering Division.Corp.Ltd.,Zhengzhou,He'nan450004,China) Abstract:As the developing of economic, many super high-rise and high-rise buildings and underground engineerings appear continuously, leading to a much smaller distance between existed buildings and a higher cost of supporting structure. Based on underground diaphragm wall and anti-seepage curtain for deep foundation excavation,the supporting structure with flexible superposition posed of soil between them,finite element analysis software ANSYS is used to analyze and simulate the stress and deformation condition of underground diaphragm wall,several schemes are contrasted by different inner support patterns,the information is collcted in time during practical engineering construction,pared with calculation results,the boundary conditions are defined by the calculation method. Engineering practice shows that the calculation results of the stress and deformation for the structure are more coincident with practical engineerings,pared with traditional calculation method,horizontal displacement reduces 30% ,thus support cost reduces about 20%. Key words: foundation excavation; supporting structure; underground diaphragm wals; horizontal displacemen...
施工技术 2015年3月上 16 CONSTRUCTION TECHNOLOGY 第44卷第5期 D0I:10.7672/sgj82015050016 深基坑施工中塔式起重机基础选型分析* 王南 (中国建筑第六工程局有限公司,天津300451) [摘要]针对目前深基坑施工项目逐渐增多的情况,依托实际工程项目,对深基坑施工中采用的塔式起重机基础形 式进行分析,着重对格构式塔式起重机基础及钢管混凝土塔式起重机基础进行有限元仿真模拟,重点对两者的模 拟数据进行了对比研究. [关键词]建筑机械;深基坑;塔式起重机;有限元分析;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2015)05-0016-03 Selection and Analysis of Tower Crane Foundation in Construction of Deep Foundation Excavation Project Wang Nan China Construction Sixth Engineering Bureau Co.Ltd.Tianjin 300451 China) Abstract:Based on the increasing deep foundation excavation projects it is necessary to analyze and pare different types of tower crane foundation which is mon used in practice based on actual engineering projects.Lattice type and steel tube confined concrete (STCC)type are simulated by finite element program and the parison focuses on their results. Key words:construction equipment;deep foundation excavation;tower cranes;finite element analysis;construction 0引言 力预先计算,并确定施工方法,做出既安全又经济 近年来,深基坑施工的工程日趋增多,由于设 的塔式起重机基础,本文结合某工程,以QTZ63塔 计的需求,基坑支护常会做到规划红线位置.外置 式起重机为例,分别对格构式塔式起重机基础、钢 塔式起重机往往难以满足施工对于覆盖半径的要 管混凝土桩式塔式起重机基础进行了计算,为塔式 求,但是增加塔式起重机的数量又会大大增加工程 起重机基础形式的选择等提供一定参考. 成本.传统塔式起重机基础形式不利于深基坑施 1工程概况 工,为了同时满足施工对工作半径、工期等多方面 本工程采用高承台和矩形格构式基础作为塔 的要求,出现了适用于深基坑的塔式起重机基础, 式起重机基础,在施作工程桩的过程中完成塔式起 其中包括格构式塔式起重机基础及钢管混凝土桩 重机桩施工.塔式起重机主要配合地下3道支撑、 塔式起重机基础.内置式基础加大了塔式起重机 环梁的钢筋、模板以及脚手管的水平和垂直运输, 的工作半径,减少了塔式起重机的覆盖盲区,解决 在顶板封闭后配合盖挖区土方和设备外运.为了 了上述问题. 作对比分析,本文同时对钢管混凝土桩式塔式起重 由于塔式起重机基础的施工质量直接影响上 机基础进行建模分析计算. 部...
施工技术 2012年8月下 104 CONSTRUCTION TECHNOLOGY 第41卷第371期 深基坑局部钢管降水井法兰片法封堵施工技术 王家法,宋文涛 (江苏省苏中建设集团股份有限公司临沂分公司,山东临沂276000) [摘要]结合临沂铂尔曼酒店工程,根据实际情况对降水方案进行选择,指出降水施工工艺流程,详细讲述了降水 井的设计、施工和封堵技术及其施工中的注意事项.通过临沂铂尔曼酒店深基坑局部降水井施工及封堵技术革 新,降低了地下水位、缩短了工期,满足施工要求.本施工工艺简单方便,可减少施工成本支出,并解决了深基坑降 水难题. [关键词]地下工程;深基坑;降水井;法兰片;止水环;施工技术 [中图分类号]TU753.66 [文献标识码]A [文章编号]1002-8498(2012)16-0104-03 Sealing Technology of Partial Steel Pipe Dewatering Wells with Flange Plate for Deep Foundation Excavation Wang Jiafa Song Wentao Linyi Branch of Jiangsu Suzhong Construction Group Co. Ld.Linyi Shandong 276000 China) Abstract:Combined with the actual construction condition of Linyi Pullman Hotel the dewatering schemes are chosen and the dewatering construction process is put forward.The design construction sealing and attentions of dewatering wells are described in detail.The partial dewatering wells of the foundation excavation and the innovation to deal with the sealing has successfully reduced the groundwater and shorted the construction period.The dewatering method is simple and reduce the construction cost. The dewatering difficulties of deep foundation excavation are solved. Key words:underground;deep foundation excavation;dewatering wells;flange plate;water stop ring;construction 1工程概况 水的粉质黏土含水层,原设计降水不能满足要求, 临沂铂尔曼酒店位于山东省临沂市兰山区滨在电梯井坑周围和坑中增加18口井点降水井. 河大道西侧,三河交汇处,地下水丰富,地质条件复2降水方案选择 杂.本工程主楼地下3层、地上34层、主楼总高度 针对施工中遇到的难题,原计划在电梯井坑周 143.8m;采用框架-核心筒结构,为800mm嵌岩钻 围采用止水帷幕施工,但考虑到止水帷幕施工周期 孔灌注桩加1900mm厚筏板基础.本工程为临沂 长、成本高,故取消该方案.通过计算在...
施工技术 2015年10月上 48 CONSTRUCTION TECHNOLOGY 第44卷第19期 D0I:10.7672/8js2015190048 深基坑地下连续墙护壁泥浆技术研究* 张毅,甘璐1,李红军2 (1.中国矿业大学(北京)力学与建筑工程学院,北京100083; 2.北京城建华夏基础建设工程有限公司,北京100022) [摘要]在地下连续墙槽壁开挖施工过程中往往需要采用泥浆护壁措施隔绝地下水,防止成槽过程中地下水涌入 而导致的槽壁坍塌问题.本工程采用循环泥浆隔绝层间潜水和承压水2层地下水,在保证地下连续墙槽壁稳定的 同时,防止地下水的浪费.在分析土层岩性的基础上,根据规范确定泥浆的性能及配合比,并据此提出泥浆制备、 质量控制、循环和处理工艺.泥浆在整个施工过程中的监测数据表明,设计的泥浆和与之相配套的工艺可以满足 地下连续墙槽壁稳定的要求. [关键词]地下工程;深基坑;地下连续墙;护壁泥浆;稳定性 [中图分类号]TU47 [文献标识码]A[文章编号]1002-8498(2015)19-0048-03 Research on Slurry of Diaphragm Wall of Deep Foundation Excavation Zhang Yi' Gan Lu' Li Hongjun2 (1.School of Mechanics and Ciril Engineering China Unizersity of Mining and Technology Beijing) Beijing 100083 China; 2.Huaxia Foundation Construction Engineering Co.Ltd.of Beijing Urban Construction Group Beijing 100022 China) Abstract:In the diaphragm wall tank wall excavation process it often needs to use slurry measures to isolate groundwater and prevent groundwater influx caused collapse.This project adopted circulating slurry to isolate interlayer diving and confined water and prevented the waste of underground water while ensuring the stability of diaphragm wall tank wall.On the basis of analyzing soil lithology and according to the specification this project determined the slurry performance and mixture ratio and put forward the slurry preparation quality control circulation and processing technology.Monitoring data of slurry showed that the design of slurry accorded with the matching process and could meet the requi...
2016年7月上 施工技术 第45卷第13期 CONSTRUCTION TECHNOLOGY 37 D0I:10.7672/5js2016130037 深基坑围护结构变形动态控制研究* 徐良英,许洋2,徐长节2 (1.杭州市城东新城建设投资有限公司,浙江杭州310000:2.华东交通地大学土木建筑学院,江西南昌330013) [摘要]基坑开挖过程中很多不确定因素会导致过大变形,因而围护结构应该根据实时监测数据进行调整.以某 基坑工程为例,原拟设3道水平钢筋混凝土支撑,因受工期限制,最终减为2道.根据现场信息及时调整施工 技术措施,并综合采取多种约束围护桩水平位移的措施.结果表明,这些措施可有效控制围护桩的水平位移及保 证围护结构整体的稳定性,效果显著. [关键词]地下工程;基坑;围护结构;变形;动态控制;监测 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)13-0037-04 Study on Dynamic Displacement Control of Retaining Structure in Deep Foundation Excavation Xu Liangying' Xu Yang2 Xu Changjie2 (1.Chengdong Xincheng Construction Investment Co.Lad.Hangzhou Zhejiang 310000 China;2.School of Ciril Engineering and Architecture East China Jiaotong Unirersity Nanchang Jiangxi 330013 China) Abstract:A lot of uncertain factors in the excavation process will lead to excessive deformation thus the design of deep foundation excavation should be adjusted dynamically according to the real-time monitoring data.This paper presents a case study on dynamic design of foundation excavation.The original design adopted three levels of reinforced concrete supports but the final design uses two layer supports for the reason of construction period.In the period of construction designers adjust construction technology timely based on feedback information from field and use a variety of restraint measures aiming at controlling the horizontal displacement of retaining piles.The result of construction shows that these measures are feasible and effective. Key wo...
2010年10月 施工技术 第39卷第10期 CONSTRUCTION TECHNOLOGY 15 深圳证券交易所营运中心钢结构施工技术 陈治,王朝阳,程鹏,叶滨 (中建钢构有限公司,广东深518040) [接要]深树证券交易所营运中心工程采用型钢混凝土结梅,其裙楼部分为巨型意铜粉架结柏,工程体量夫,施 工难点多.为解决悬挑平台的施工难题,位用了两台M1280D塔式起童机进行钢结吊梨.详细介了裙楼的颗 变形分析,裙钢结构的梨,型节点的拼技术,超愿铜板的焊接技术及砂箱卸载技术等多项关键技术,到下 了诸多工程亮点,保证了钢传构工程选工进度和工程质量. [关键词]钢传构:母结构:巨型粉架:施工技术 [中分类]TU758 [文标识移]A [文章编号]1002-8498(2010)10-0015-06 Construction Technology of Steel Structure in Shenzhen Stock Exchange Operating Center Project Chen Zhi Wang Chaoyang Cheng Peng Ye Bin (China Construction Steel Structure Co.Ltd.Shenzhen Guangdong 518040 China) Abstract:Shenzhen Stock Exchange Operating Center project is steel-reinforced concrete structure and its podium in particular is posed of giant cantilever truss which has large engineering dimension and many construction difficulties.In order to solve construction difficulties of cantilever truss two M1280D tower cranes are used to lifting steel structure.Some key technologies are introduced including deformation analysis of podium steel installation of podium assembly technology of giant joint welding technology of ultra-thick steel plate and unloading technology by sand box which ensure the construction progress and the quality of the project. Key words:steel structure:cantilever structure:giant truss:construction technology 1工程概况 2458 深创证券易所营运中心工程地下3层,地上46 层,立面外形呈“中”字形,总建筑面积约26.24万m2 其中地下室约8万m.主采用框简结构,外框采用 10F-面 型钢混凝土密柱结构,建筑高度245.8m 招升裙楼 采用全焊接箱形截面巨型钢粉架结构,节点为钢板焊 6242 接节点,裙楼东西面下方设粉架简支撑,裙楼东西母挑 -10F 36m 南北悬挑22m.巨型粉架下下表...
2010年10月 施工技术 第39卷第10期 CONSTRUCTION TECHNOLOGY 21 深圳证券交易所营运中心超厚钢板焊接技术 王朝阳,陈治,杨松,陈勇 (中建钢构有限公司,广东深州)518040) [要]深证养立易所营运中工程升裙德构为全焊接巨型悬挑铜粉架结构,粉架由巨型钢板焊接节点和 箱形截面施杆拼装而成.施工中采用,体保护半自动焊接技术,多人同步对称分段、分层多焊接方法.保 介将了巨型衔架的焊接顺序,保证了工程质量. [关键词]臣型粉架:焊顺序:得板焊接:焊接人孔 [中图分类号]TU758.162 [文献标]A [文章编号]1002-8498(2010)10-0021-03 Welding Technology of UItra-thick Steel Plate in Shenzhen Stock Exchange Operating Center Project Wang Chaoyang Chen Zhi Yang Song Chen Yong (China Construction Steel Structure Co.Ltd.Shenzhen Guangdong 518040 China) Abstract:The uplift podium of Shenzhen Stock Exchange Operations Center Engineering is a giant cantilever truss which are posed with giant welding steel plate joints and steel box section chords. The CO semi-automatic welding gas protection is used during construction.The welding method and welding sequence of giant truss are introduced which ensure the quality of the project. Key words:giant truss:welding sequence:thick plate welding:welding manhole 1工程概况 深证券交易所营运中心裙楼平面尺寸162m× 一塔楼 98m 升至36m高空,形成高空挑结构,如图1所 升裙楼 示.裙楼采用14榴空间正交巨型全焊接箱形截面钢 行察结构,采用钢板焊接节点,节点最童172,最大箱 形杆件截面尺寸4.2mx2m 场焊接量大.裙楼东画 面下方设粉架筒支撑,东西方向悬挑36m 南北方向悬 挑22m.巨型粉架下孩下表面标高36.87m 项面10层 桁架筒 标高62.42m.裙楼主粉架用钢量1.4万t 最大板 a工程效果 b裙楼整体透视 厚100mm 主要采用Q345B Q345GJB钢材,60mm厚以 图1深社养易所运营中世王程 上厚板厚度方向满足Z25的要求. Fig.I Shenzhen Stock Exchange Operating Center 2焊接施工唯点 3)焊接人孔板设置主粉智箱形截面杆件侧面开 1)厚板焊接裙棒主粉架采用铜板焊接节点和箱 设人孔,将仰焊改为平角焊.人孔尺寸设置需满足人 形截面弦杆拼装纽成,节点形式杂,板厚转大,最大 员操作和减小应力. 100mm 焊接接头为T够接头和板对接接头两种形式, 3主焊接技术 其中T形接头焊健长度最大7m.超厚钢板、超长焊缝 3.1厚板焊接...
[关键词】钢结构:悬挑钢桁架;临时支撑胎架:标准化组装胎架 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2011)14-0023-04 DesignandApplicationofStandardizedAssembledFrame in Trading Center ofShenzhen StockExchange Wang Chaoyang,Chen Zhi,Ye Bin,Yang Song,Ji Hongxi (China Construction Stee Structure Co.,Lad.,Shenzhen, Guangdong 518040, China) Abstract;The podium of Trading Center of Shenzhen Stock Exchange project is lifted 36 meters from ground. The podium is large-span space cantilever steel truss assembled in high-sltitude. The bottom chord of the cantilever part in the steel truss has 46 joints. The cantilever structure is instailled by selting temporary support frame under the joints. The frame is lattice steel pipe structure with monolithic standard members to be assembled as 6m or 4m standard sections on-site. Each standard section in vertical is connected by flange bolts. Two-layer connecting trusses are set between frames,and steel tension rod is set at the end span of the frame to assure local and the whole stability. The standard assembly frame can be used repeatedly as the large supporting system, and it can be simply assembled and conveniently saved, which can lower construction cost. Key words;steel structure; cantilevered steel truss; temporary support frame; standardized assembled frame 1工程概况 2施工方案 深圳证券交易所营运中心工程地下3层,地上 经过方案比选,采用“胎架支撑、高空原位拼装 46层,立面呈“中”字形(见图1),总建筑面积约 法”进行裙楼钢结构安装。
2011年2月 施工技术 第40卷第3期 CONSTRUCTION TECHNOLOGY 71 深圳湾体育馆焊接合拢对结构受力性能的影响分析 郭彦林,赵思远 (汤华大学土木工程,北京100084) [摇]焊接接的料件在焊健冷却后会存杆件中产生残余变形与残会应力,其焊接构件的残余变形一般会曼到 周围构件的来作用而转化为构中的残余内力.运种在结构中新情的附加残余内力对传构叠力性能极其不利, 甚至得邮部分杆件受压属服或爱断裂而美.首先研究了单个非约束由构件的焊接收缩形规律,提出了 缩变形计算公武:其次提出了一种日形刚架棋型,通过对横梁实接对接焊研究焊接连接中焊继尺寸、焊接顺席以及 周边构件的约束强弱对Π形制密体系焊接成型状态的彩响.最后以深例湾体育场焊接含就过程为研完对象,通过 等牧量原则将上迷传果应用到体育场的合挑中,出焊牧对就继周围杆件内力的影嗨不容忽视. [关键词]体育馆;焊接:残余内力:等收馆量质则 [中图分类号]TU758.162 [文献识码]A [交章编号]1002-8498(2011)03-0071-05 Welding Effects on Roof Closure Process of Shenzhen-wan Stadium Guo Yanlin Zhao Siyuan Department of Civil Engineering Tsinghua Unirersity Beijing 100084 China) Abstract:High residual stresses of members will lead to residual internal force and deformation in the structures when the member-welding is constrained by around members.This additional residual internal force in the structure may result in structural member yielding due to pression or cracking due to tension.The authors focuse on the effect of roof welding closure process of Shenzhen-wan Stadium. Welding shrinkage deformation of a single tube is studied firstly and a proposed formula for predicting welding shrinkage deformation is drawn.Then a typical H-shaped frame model is proposed to investigate the effect of welding size and welding sequence of a single beam due to the constraint provided by adjacent members.The conclusion is drawn and is used in the roof welding closure process of Shenzhen- wan Stadium based on the equal welding deformation principle.Si...
施工技术 2011年10月上 36 CONSTRUCTION TECHNOLOGY 第40卷第350期 深圳平安金融中心超深基坑运土坡道设计与施工 李洪海,周宇 (中建一局集团建设发展有限公司,北京100102) [摘要]以深圳平安金融中心工程为例,介绍了在不影响超深基坑内支撑结构体系受力条件下运土坡道的设置. 详细介绍了坡道设计考虑的因素,大圆环运输通道置换与内支撑的施工配合,坡道通往装土点临时通道的布置及 转换技术.在施工过程中采用了洗轮机及其他环保措施,取得了良好的效果. [关键词]高层建筑;地下工程;基础工程;深基坑;运土坡道;设计;施工 [中图分类号]TU753.1 [文献标识码]A[文章编号]1002-8498(2011)19-0036-03 Design and Construction of Earthmoving Ramp of Ultra-deep Foundation in Shenzhen Ping'an Financial Center Li Honghai Zhou Yu (China Construction First Division Group Construction Development Co.Lad.Beijing 100102 China) Abstract:Based on Shenzhen Ping'an Financial Center project authors introduce the earthmoving rump setting without influence on structure system of ultra-deep foundation inner support.Factors for rump design cooperative construction of transportation passage replacement and inner support layout of temporary passage and conversion technology are introduced in detail.Authors adopt washing machine and other environmental protection measures which obtain good effect. Key words:tall buildings;underground;foundation;deep foundation excavation;earthmoving rump: design;construction 1工程概况 深圳平安金融中心工程位于深圳市福华路与 益田中路交界处,基坑最深处-33.5m 土方量为52 万m3.基坑平面呈不规则形状,北侧为已经运营的 地铁1号线购物公园站,基坑支护采用大直径护坡 大圆环 内径62.5m 桩加旋喷、摆喷帷幕柱,钢筋混凝土内支撑形式,内 支撑共设4道,局部5道(靠北侧地铁车站).基坑 钢筋混凝土结构内支撑设计为南北2个圆环 内支撑 Monitoring 北半部为主楼范围大圆环,内径62.5m 护坡桩 旋喷幕 南半部为裙楼范围小圆环,内径为60m 如图1所 小圆环 示.施工时设计要求混凝土内支撑强度必须达到 内径60m 运土坡道 90%后方可向下挖土. 2运土坡道设计 2.1坡道设计考虑因素 图1深圳平安金融中心基坑支护平面 1)坡道的设计位置不能影响内支撑体系的整 Fig.1 Found...
施工技术 2016年3月上 A CONSTRUCTION TECHNOLOGY 第45卷第5期 D0I:10.7672/sgjs2016050004 深圳平安金融中心塔式起重机支承架 悬挂拆卸技术* 陆建新,王川,胡攀,霍宗诚,张贺,杨定国 (中建钢构有限公司,广东深圳518040) [摘要]针对超高层建筑中塔式起重机的特点,塔式起重机支承架拆卸是保障超高层施工的重要前提.对塔式起 重机支承架拆卸方式进行了研究,对于常规拆卸方法的缺点开展分析,提出了一种新型悬挂拆卸施工技术.该技 术利用索具替代塔式起重机作为拆卸工具,支承架悬挂于空中等待周转,节约了堆料场地,缩短了施工工期,保证 了塔式起重机支承架拆卸施工安全、高效地进行. [关键词]高层建筑;塔式起重机;支承架;悬挂;拆卸;施工技术;有限元分析 [中图分类号]TH213.3 [文献标识码]A [文章编号]1002-8498(2016)05-0004-05 Disassembly Technology of the Tower Crane Support Frame by Suspension for Shenzhen Ping'an Financial Center Building Lu Jianxin Wang Chuan Hu Pan Huo Zongcheng Zhang He Yang Dingguo China Construction Steel Structure Co.Ltd.Shenzhen Guangdong 518040 China) Abstract:Based on the characteristics of tower crane in super tall building construction the tower crane support frame disassembly is the important precondition of tall building construction.This paper studied the disassembly manner of tower crane support frame analyzed the disadvantages of conventional disassembly manner and proposed a novel disassembly technology by suspension.The technology took advantage of the rigging instead of tower crane as the disassembling tool and suspended tower crane support frame in the air for cycle which can save the stacking area shorten the construction period and ensure the safety and efficiency of the tower crane support frame in disassembly construction. Key words:tall buildings;tower cranes;support frame;suspensions;disassembly;construction;finite element analysis 0引言 自爬升式塔式起重机多支承于核心...
[关键词】基坑工程;监测;支护;卸载 [中图分类号]TU753 [文献标识码]A [文章编号】1002-8498(2013)09-0024-05 DesignandConstructionMonitoringofShenzhen PAFCDeepFoundationExcavation Zhou Yuqi',Yang Yaohui',Li Wenjun²,ShuXianqing²,Liu Weiwei (1.China Construction First Division Construction&Developmen Co.,Ltd.,Bejing 100102,China; 2.Shenzhen Ping'an Financial Center Construction&Development Co.,Ltd.,Shenzhen,Guangdong 518048,China) Abstract:The height of Shenzhen Ping'an Financial Center building is 660m,with foundation excavation area of 17 150m²and excavation depth of -33.5m.The form of the retaining and protecting structure for foundation excavation is reinforced concrete piles and bracing system & soil anchor,bining with rotary jet grouting pile and sleeve valve pipe grouting to cutting off water. The gap between the rod of the first level bracing system was filled with reinforced concrete plate.Reinforced concrete loop ramp was used for soil excavation.The results of construction monitoring indicated that the deformation of retaining structure and the surrounding environment was controlled in allowable range of design requirements, guaranteeing the normal operation of the subway line 1 of Shenzhen. Key words:foundations;monitoring; supporting;unloading 1工程概况 深圳平安金融中心(Ping'anFinancialCenter一 简称PAFC)是以甲级写字楼为主的综合性大型超 高层建筑,占地面积18931.0m²,总建筑面积46万 m²。
2015年5月上 施工技术 第44卷第9期 CONSTRUCTION TECHNOLOGY 119 D0I:10.7672/sgjs2015090119 深圳平安金融中心主塔楼超高施工电梯配置技术* 左强,周予启,史媛,孙若晖,李彦贺 (中建一局集团建设发展有限公司,北京100102) [摘要]深圳平安金融中心主塔楼建筑高度660m 地上118层.结构和装修施工期间,在核心筒内布置6台高速双 笼施工电梯,用于材料和人员的垂直运输.施工后期,依次启用4台正式电梯,分级分层接力,解决施工电梯拆除 后的垂直运输问题.实践证明,本工程电梯布置合理,能满足现场材料运输需要,保证施工顺利进行,结构、装修的 施工工期均在计划之内. [关键词]建筑机械;高层建筑;电梯;垂直运输;正式电梯转换 [中图分类号]TU61 [文献标识码]A [文章编号]1002-8498(2015)09-0119-03 Construction Elevator Configuration Technology of Shenzhen Ping'an Financial Center Building Zuo Qiang Zhou Yuqi Shi Yuan Sun Ruohui Li Yanhe (China Construction First Group Construction Development Co.Lad. Beijing 100102 China) Abstract:The height of Shenzhen Ping'an Financial Center building is 660m and the ground layer is 118.During structure and decoration construction six high-speed double cage construction elevators are arranged in the core barrel used for vertical transport of materials and personnel.At the end of construction period four formal elevators are enabled then the elevators serviced hierarchical relay to solve the problem of vertical transportation after the construction elevators demolition.It proves that the elevators are arranged reasonably and can meet the requirements of on-site materials transportation and guarantee the successful construction.The construction time of structure and decoration are controlled in planned limits. Key words:construction equipment;tall buildings;elevators;vertical transportation;formal elevator conversion 1工程概况 墙单元板块、机电小型设备及零散材料、施工人员 深...
施工技术 2010年6月 116 CONSTRUCTION TECHNOLOGY 第39卷第6期 深圳大运会主体育场钢结构吊装方法研究应用 严小霞,陈韬,徐聪,陈江 (中建钢构有限公司,广东深圳518040) [摘要]针对深圳大运中心主体育场钢结构工程单层折面空间网格的结构特征和施工难度,通过吊装工况的有限 元模拟计算和实际吊装情况的对比分析,重点研究了高空散件吊装和高空分块吊装在施工过程中的利与弊,并总 结出两种吊装方法在施工中互相结合、取长补短、灵活运用的优点和实践经验. [关键词]钢结构;单层折面空间网格;散件吊装法;分块吊装法 [中围分类号]TU745.2[文献标识码]A【文章编号]1002-8498(2010)06-0116-03 Study on Installation Method for Steel Roof of Main Stadium of Shenzhen Students Sports Center Yan Xiaoxia Chen Tao Xu Cong Chen Jiang (China Construetion Steel Structure Corporation Shenthen Guangdong 518040 China) Abstract:Based on structural characteristics and construction difficulties of spatial single-layer folded- surface grid structure of steel structure in main stadium of Shenzhen Students Sports Center the advantages and disadvantages of section lifting and block lifting in high altitude are researched during the process of construction by parison analysis between FEA simulation calculation under lifting load and actual lifting.Furthermore advantages are summed up about mutual bination adding to the shortings and flexible application between two lifting methods. Key words:steel structure;single-layer folded-surface grid structure;section lifting;block lifting 1工程概况 重4000t.结构的冠峰、内环位置为焊接节点,共40个 深圳大运会主体育场钢结构形式为单层折面空间(见图2).钢构件通过承力节点连接形成若干三角形 网格结构,平面形状为285m×270m椭环形,最高点高结构面,每13个三角形结构面构成一个安装单元,相 44.1m 在不同区域悬挑长度为51.9-68.4m 设计总似的安装单元通过椭形循环排列形成稳定的复杂空间 用钢量约18000t. 结构体系(见图3),即单层折面空间网格结构.结构 钢屋盖分为立面、马鞍形外圈、内圈3个部分,由的主杆件为铸钢管、焊接钢管及铸钢管焊接钢管,直 20个形状相近的结构单元呈双...
2010年8月 施工技术 第39卷第8期 CONSTRUCTION TECHNOLOGY 55 深圳大运中心主体育馆钢屋盖施工工况模拟分析 遇瑞 (上海宝冶集田有限公司,上海200941) [摘要]计算机控制液压同步滑移技术是近年来很多大跨度空间钢结构施工选用的安装方法.以深圳大运中心主 体育馆钢结构的累积旋转滑移施工为例,对结构滑移和胎架卸载施工工况进行模拟分析,指出滑移过程中,结构最 不利杆件应力比为0.375,胎架卸载过程中,结构最不利杆件应力比为0.682,均满足施工安全要求.并将计算结果 与现场监测结果进行比较,说明有限元模拟的正确性. 【关键词]深圳大运中心;主体育馆;钢屋盖;滑移;卸载;模拟分析 [中图分类号]TU311.41 [文献标识码]A[文章编号]1002-8498(2010)08-0055-03 Construction Conditions Analysis on Steel Roof in Shenzhen Universiade Sports Center Main Gymnasium Yu Rui (Shanghai Baoye Group Co. Lad.Shanghai 200941 China) Abstract:Hydraulic synchronous sliding technology controlled by puter is extensively used in large- span spatial steel structure construction in recent years.Taking accumulated rotation sliding construction for steel roof of Shenzhen Universiade Sports Center Main Gymnasium as example the construction conditions for sliding and jig unloading are simulated and analyzed and the results show that during sliding the stress ratio of the most unfavorable bar is 0.375 and that is 0.682 during jig unloading and both of them can meet safety requirements.Moreover the calculation results and monitoring results are pared to indicate the accuracy of finite element simulation method. Key words:Shenzhen Universiade Sports Center;main gymnasium;steel roof;sliding;unloading; simulation analysis 计算机控制液压同步滑移是一项新颖的结构安装35mm 主结构拉环钢管ZJG14为Q390B 其余构件材 施工技术.它通过计算机控制,并结合液压同步新原质均为Q345B;次结构为矩形钢管,截面尺寸形式较 理,可将成千上万吨的构件拼装后,滑移到预定位置安多,厚度为8~32mm 材质均为Q235B.结构轴测图如 装就位. 图1所示. 我国于20世纪90年代开始自主研...