2011年12月下 施工技术 第40卷第355期 CONSTRUCTION TECHNOLOGY 21 平安国际金融中心深基坑支护技术 赵行立 (深圳市地质局,广东深圳518000) [摘要]平安国际金融中心设计为5层地下室,基坑深32m.基坑周边环境非常复杂,开挖支护难度极大.结合工 程地质条件及地下水情况,采用支护桩内支撑周边封闭式止水帷幕的支护方案.并对地表沉降及位移、建筑 物及地下管线变形、地下水位、桩顶位移、土体沉降、支撑轴力及立柱变形等进行监测.通过分析监测成果进一步 指导施工,以保证基坑及周边建筑安全. [关键词]地下工程;超深基坑;支护;监测 [中图分类号]TU473 [文献标识码]A[文章墙号]1002-8498(2011)24-0021-05 Supporting of Super-deep Foundation Excavation of Ping'an International Financial Center Zhao Xingli Geological Bureau of Shenzhen' Shenzhen Guangdong 518000 China) Abstract:Ping'an International Financial Center is designed with 5-floors basement and the depth of foundation excavation is 32m.The surrounding environment of the foundation excavation is very plicated.The retaining method of support piles and internal supporting with surrounding waterproof curtains is adopted.Moreover some parameters are monitored to provide guidance for construction and ensure safety of surrounding buildings such as the surface settlement and displacement deformation of buildings and underground pipelines underground water levels displacement of pile top soil settlement supports axial stress and vertical columns deformation. Key words:underground;super-deep foundation excavation;supporting;monitoring 1工程概况 表1场地主要岩土层参数 平安国际金融中心项目总投资90亿元,工程用 Table 1 Parameters of fleld soil 地面积18931m2 总建筑面积460665m2 为超高层 土层 层厚/重度/粘聚力/内摩擦摩阻力/ 办公楼,塔楼地面以上高588m 115层,目前为中国 名称 m(kNm-3)kPa 角/()kPa 第一高楼.设有5层地下室,基坑开挖深度32m. ①人工填土 4.76 17.0 10 8 40 该基坑周边环境相当复杂,位于深圳市福田中心区. ②粉质黏土 3.32 16.0 10...
2011年7月上 施工技术 第40卷第344期 CONSTRUCTION TECHNOLOGY 35 平姚某基坑土钉墙支护施工监测分析 张国超,侯智勇 (平煤建工集团有限公司土建处,河南平顶山467000) [摘要]对平姚某基坑土钉墙施工过程采取了有效的监测手段,通过对监测数据进行分析,及时发现了局部土体开 裂,对裂缝产生的原因进行了分析并及时采取了设置拉结筋、加大注浆压力等有效的加固措施阻止了裂缝的发展, 使位移收敛点在预期时间内.监测结果表明,基坑位移存在一定的滞后效应,监测工作应持续到结构稳定之后. [关键词]深基坑支护;土钉墙;施工监测;水平位移;沉降位移 [中图分类号]TU413.62 [文献标识码]A[文章编号]1002-8498(2011)13-0035-03 Construction Monitoring Analysis of Soil Nailing Wall Support of Some Engineering in Pingyao Zhang Guochao Hou Zhiyong Construction Department of Pingmei Construction Engineering Group Co.Ltd.Pingdingshan He'nan 467000 China) Abstract:Effective monitoring measures are adopted in some soil nailing wall support engineering in Pingyao.Based on analysis of monitoring data local soil crack is found in time and the reason is analyzed.Some measures as setting tie bars and increasing grouting pressure are taken to make displacement convergence point in expected time and prevent crack development.The monitoring results show that there is hysteresis effect in foundation excavation displacement and monitoring work should be kept on until the structure stable. Key words:deep foundation excavation support;soil nailing wall;construction monitoring;horizontal displacement;subsidence displacement 1工程概况 定性为前提,既考虑边坡整体稳定性,又考虑施工过 本工程为平姚输煤通道火车卸煤楼及1号转运 程中的稳定性.因此喷射混凝土面层均按构造要求 站联合建筑,基坑上口全长230m 两端的1号转运 设计,厚度100mm 平台以下喷射120mm厚混凝土, 站基坑和皮带张紧上口尺寸35.5m×35.5m 中间 混凝土强度等级为C25 内配1层钢筋网和12通 长170m的通道上口宽26m 设计开挖深度12.21m 长菱形加强筋.土钉采用25Ⅱ级螺纹钢,如图1 基坑两端的局部开挖深度19.50m 周围无重要的建 所示.土钉孔径1...
[关键词】钢管柱;节点;加工;轧制;拼装;焊接 [中图分类号]TU758.16【文献标识码]A[文章编号]1002-8498(2016)02-0048-05 ProcessingTechnologyResearchof GiantSteel Tube Column Round-square Joint Liu Jun,Liu Huan,Zhang Hao,Gao Yonggang,ChenZhi,MengXiangchong (China Construction Steel Structure Co.,Ld.,Shenzhen,Guangdong 518040,China) Abstract:In recent years, the tall and super-tall buildings have rapid worldwide development.Moderm artistic aesthetic appearance.The project of Chongqing Ruian‘Sail of Jialing River'has concluded a set joint through theoretical calculating and practical applying,whichissimple and practical and canbe used to direct the procedure of cutting,pressing,assembling and welding of joint-transition.By using this
appearance. Key words:steel tube column; joints;processing; suppressing; assembly;welding 1工程概况称圆方节点。
[关键词]钢结构;框架;焊接;残余应力;控制 【中图分类号】TU758.162【文献标识码】A[文章编号]1002-8498(2012)20-0093-03 Control Technology on Welding Residual Stress of MegaSteelFrame Structure
(1.School of Civil Engineering,Guangzhou University,Guangzhou,Guangdong 510006,China; 2.The Fijth Research and Design Institute of Nuclear Industry,Zhengzhou,He'nan 450052,China; 3.Zhejiang Southeast Space Frame Co.,Lad.,Hangzhou,Zhejang 311209,China) Abstract:The cause and main influence of welding residual stress are introduced, and the control technology and treatment measures after welding are also discussed. Combining with the welding project of huge plex steel frame structure in Guangdong Science Center, the applications of control technology on welding residual stress are emphatically introduced,which effectively ensure the quality of welding seam and well solve the problem of welding residual stress. Key words:steel structures;frame; welding;residual stress; control 随着我国国民经济的不断发展,各种大型空间1焊接残余应力产生的原因 结构建设规模越来越大。
[关键词】钢结构;框架;预应力;拉索;支撑;数值模拟 [中图分类号]TU758.11 [文献标识码】A [文章编号]1002-8498(2016)02-0075-04 StructuralAnalysisofConstructingProcessforMega Frame and Cable BracingStructure Guo Junyuan,Chen Song,Zhang Yong,Tang Baijian (SchoolofArchitecture and CivilEngineering,Jiangsu Universty ofScience and Technology,Zhenjang,Jiangsu 212003,China) Abstract;This papermainly presents structural deformation and internal force variation ofmega frame- cable bracing structure throughout the construction process under given construction scheme.Structural deformation,especially formega beam span deflection,hasmutation when prestressed cables are being stretched and substructures are being lifted during the construction process.Mega column axial force gradually increases and moment as well as shear force is greatly influenced by the process of stretching prestressed cable.Internalforceofmega beamislargelyinfluenced by stretching pre-stressed cableof the upper largelayerandlifting thesubstructure of the current largelayer.Theconclusionabove canprovide theoretic guidance for the design and optimum of the structural construction. Key words:steel structures;frame;prestressing;tensioning cables;supports;simulation 1模型及软件设置[16] 楼板,面层为80mm厚的C30混凝土。
[关键词]圆环结构;整体旋转起扳;起扳参数;变形预调;拆索顺序;节点构造 【中图分类号]TU391.9[文献标识码】A【文章编号】1002-8498(2010)08-0017-07
Guo Yanlin', Lan Tao²,Zhao Siyuan', Zhang Bohao' (1.School of Civil Enginering,Tsinghu University,Bejing100084,China; 2.School of Civil Engineering, Xian Univesity of Architecture and Technology,Xian,Shaanxi710055,China) Abstract:The study of construction scheme for a rigid mega ring-shaped steel structure is presented.A renovate installation method, namely rotating and pulling ring steel structure, is developed and introduced in this study.Firstly, the ring steel structure is assembled into the whole structure in horizontal in-plane state on the ground by welding and connecting substructure together, and further is strengthened temporarily by cables. Secondly, the whole structure is arranged to rotate by pulling it into a vertical plane state and to be fixed on the ground. A time-varying FE model reflecting a full construction process was utilized to analyze the ring steel structure construction, and the obtained results will be referenced directly in structural design and construction control. In addition, pre-set construction deformations of ring steel structure result from structural gravity in the vertical state were considered in the state of ponents manufacture. The design and construction details of key joints during the installation are also proposed. d e u uo ud e re ts s puso parameter; pre-set construction deformation; removing cable sequence; joint structure 1工程概况地震不起控制作用。
2016年8月上 施工技术 第45卷第15期 CONSTRUCTION TECHNOLOGY 45 D0I:10.7672/8js2016150045 巨型框架结构地脚锚栓群装配整体式安装技术 王宏1,马义俊1,翟海雁1 2 3,彭明祥4,邵新字1,刘海,赵思远1 (1.中建钢构有限公司,广东深例)518040;2.清华大学土木工程系,北京100084; 3 中国建就工程总公司技术中心,北京101399;4,中建三局集团有限公司,北京100097) [摘委]舒对压型框架建筑栓群的精度控制难和起吊任务繁重等安装向题,提出一种新型装配整体式栓安装 套架及其容装方法,诚方法的自造应拉术具有现操作性强、安全性高、构造简单、传构稳团、可实现高精度定位, 短时间内实现了密集高强锚栓群的容装行业,短工期同时严梅保证栓容装精度,取得了转好的实际应用效果. [关键询]高居建;安装;地脚栓;框架结构;装配整体式 [中图分类号]TU375.4 [献标识码]A[交章编号]1002-8498(2016)15-0045-05 An Assemble Monolithic Installation Technology of Anchor Bolts in Mega Frame Structures Wang Hong' Ma Yijun' Qu Haiyan.2.3 Peng Mingxiang Shao Xinyu' Liu Hai' Zhao Siyuan' (1.China Construction Steel Structure Co.Ld.Shenzhen Guangdong 518040 China;2.Department of Ciuil Engineering Tsinghua University Beijing 100084 China;3.China State Construction Engineering Corporation Technology Center Beijing 101399 China:4.China Construction Third Engineering Bureau Group Co.Lad.Beijing 100097 China) Abstract:For precision control of mega frame building anchor bolt group and lifting tasks such as heavy installation problems a new assembled integral type anchor bolt mounting bracket and installation method are put forward.The method of adaptive techniques with strong field operability high safety simple structure stability is introduced achieving high positioning accuracy and shortening period of time of the dense construction high strength bolt group installation which ensures anchor bolt installation accuracy and satisfactory results are a...
施工技术 2010年7月 32 CONSTRUCTION TECHNOLOGY 第39卷第7期 巨型桁架体系次结构施工过程力学分析 曾强1,黄川2,程睿,鲍广鉴 (1.重庆大学土木工程学院,重庆400045;2.中冶赛迪工程技术股份有限公司,重庆400013) [摘要]巨型桁架结构主要由巨型柱、巨型斜撑和巨型桁架构成.在巨型桁架结构的修建过程中,巨型斜撑发挥了 特殊的传力卸载作用,与常规竖向结构传力途径存在较大差别.研究钢结构巨型桁架体系次结构的预起拱问题, 以及安装过程中关键构件内力变化过程.利用通用有限元平台编制分析程序,对核心筒超前施工条件下巨型桁架 预起拱的间题进行仿真分析,将仿真计算结果、常规计算和实际测量数据进行比较分析,并对巨型桁架体系次结构 .施工过程的内力变化特点进行深人研究. [关键词]上海环球金融中心;次结构;巨型桁架体系;预拱值;有限元分析 [中图分类号]TU323.4 [文献标识码]A[文章编号]1002-8498(2010)07-0032-03 Substructure Mechanical Analysis of Mega-truss System During Construction Zeng Qiang' Huang Chuan2 Cheng Rui' Bao Guangjian' (1.Department of Civil Engineering Chongging Unisersity Chongging 400045 China; 2.MCC Cisdi Engineering Co.Ld.Chongging 400013 China) Abstract:Mega-truss system is posed of mega-column mega-truss and mega-brace.During the construction process of mega-truss system mega-brace plays a special role to deliver the force paring with general structure.Authors focuse on the substructure pre-arch of mega-truss system and the variation of key-member force during construction.Depending on piling special program on general finite element analysis program platform authors pare the calculation results between numerical analysis considering core building in first construction method and normal structure design analysis method. Furthermore the detail analysis on the member-fore character of the substructure during construction process is given. Key words:Shanghai World Financial Center;substructure;mega-truss system;pre-ar...
2011年4月上 施工技术 第40卷第338期 CONSTRUCTION TECHNOLOGY 工法的编写与应用 孙振声 (中国建筑业协会专家委员会,北京100081) [摘要]对工法的内涵和特点进行了介绍,指出了工法推广工作对提高工程质量、增加社会经济效益、提高企业自 身技术水平和推动设计施工一体化等方面所具有的重要意义.提出了工法开发和编写的方向,并对企业如何加强 工法工作提出了建议.从工法的选题分类、编写内容和注意事项3方面对工法的编写进行了详细的闹述. [关键词]工法;创新;设计施工一体化;节能减排;知识产权;编写 [中图分类号]TU711 [文献标识码]A[文章编号]1002-8498(2011)07-0001-04 Compilation and Application of Construction Method Sun Zhensheng Expert Committee China Construction Industry Association Beijing 100081.China) Abstract:Connotation and characteristics of construction method are introduced and significance such as improving engineering quality increasing social and economic benefit improving technical level of enterprise and promoting design-construction integration is pointed out.The author proposes the direction of development and pilation of construction method and gives advice for strengthening construction method.Compilation of construction method is expounded in detail from aspect of topic selection content and attentions. Key words:construction method;innovation;design-construction integration;energy saving and emission reduction:intellectual property;pilation 1国家级工法的发展状况 全国共申报840项工法,评审通过348项,升级版 住房与城乡建设部、中国建筑业协会已先后组20项;②2007一2008年全国共申报1694项工 织9次国家级工法评审工作,自国家级工法具体管法,评审通过360项,升级版57项. 理工作委托中国建筑业协会承担以来,已组织了62工法的内涵 次工法评审,施工企业的重视和认识程度逐年提高, 工法是以工程为对象,工艺为核心,运用系统工 许多企业还建立了工法管理制度,如中国建筑工程程的原理,把先进技术和科学管理结合起来,经过工 总公司等已形成了一整套工法开发、编写和应用的程实践形成的综合配套的施工方法. 产、学、研体系,为企业带来了明显的效益,有些工法 2.1针对性和实践性 已成为企业竞争的有力武器.近几年,全国各施工 一项工程,特别是科技含量较高的工程,由于...
施工技术 2014年12月上 24 CONSTRUCTION TECHNOLOGY 第43卷第23期 D0I:10.7672/5gjs2014230024 山西某大剧院看台屋面网架超高施工模架设计与分析 吴海英,郭昭胜2,雷宏刚2 (1 山西大学土木工程系,山西太原030013;2.太原理工大学建筑与土木工程学院,山西太原030024) [摘要]以某大剧院看台屋面网架的超高施工模架为例,首先介绍了将超高施工模架简化为平面排架的计算模型, 分别就杆件强度、刚度及整体稳定性进行验算分析;其次,利用结构分析软件SAP2000建立了模架整体空间有限元 模型,对比了平面模架与空间模架两种计算模型之间的计算结果差异,分析了超高模板支撑体系的空间整体性能. 结果表明,平面排架计算模型的计算过程相对简单合理,且具有一定的安全储备.最后,强调了超高模架搭设施工 过程中应该注意的几项施工技术. [关键词]模架;平面排架;有限元分析;施工技术 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2014)23-0024-05 Design and Analysis of Ultra High Formwork Support for Grandstand Roof Truss of Some Grand Theater in Shanxi Wu Haiying' Guo Zhaosheng2 Lei Honggang (1.Department of Civil Engineering Shanxi University Taiyuan Shanxi 030013 China:2.College of Architecture and Civil Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China) Abstract:Taking the construction formwork support of big theater grandstand roof truss as an example firstly this paper introduces the theoretical calculation model of ultra high construction formwork support which is simplified the plane frame checks and analyzes the member strength stiffness stability. Secondly this paper sets up the space finite element model of plane frame by the structural analysis software SAP2000 pares the calculation results between the plane formwork and the space formwork and analyzes the overall performance of space of the ultra high formwork support system.The results show that the calculation method of the plane formwork is relatively simple re...
[关键词】钢结构;连接体;桁架;吊装;支撑 [中图分类号】TU758.11[文献标识码】A[文章编号】1002-8498(2014)14-0149-03 Large-span Steel Structure ConnectionBodyHoisting Technology atHigh Altitude inShanxi Theatre Dong Jingmin (Shanxi Construction Engineering(Group)Co.,Taiyuan,Shanxi030006,China) Abstract:The connection body of Shanxi Theatre has plex spatial structure,large truss beam section, heavy weight and difficult integral hoisting.By reasonable design of construction machinery,precise calculation of construction data,the construction of segmental installation and double cranes lifting was design and specification.Taking area 1 as example,the technologies of truss installation,supports design and temporary supports unloading were introduced in detail. Key words:steel structures; connection body; trusses;hoists; supports 1工程概况舞台屋面 山西大剧院位于山西省太原长风商务区文化连接体
音乐厅 岛东西中轴,项目占地面积约80亩(1亩= 666.67m²),总建筑面积7.3万m²,主要包括主剧 场、音乐厅和小剧场及排练厅、琴房、演播室、展台 休息厅、化妆间、道具服装间等主要功能用房。
施工技术 2016年7月下 76 CONSTRUCTION TECHNOLOGY 第45卷第14期 D0I:10.7672/8js2016140076 山西大剧院空间网格连体结构施工仿真分析* 焦晋峰,马晋鲁,雷宏刚 (太原理工大学建筑与土木工程学院,山西太原030024) [摘要]针对山西大剧院空间网格连接体结构,采用有限元软件,考虑结构施工过程中时变效应,对上述结构进行 施工全过程仿真分析、一次性加载分析、温度应力下施工全过程仿真分析及使用过程中温度应力分析,分析结果表 明该施工方案合理可行,并为后续结构合龙温度选择及结构健康监测提供了参考依据. [关键词]钢结构;空间网格结构:仿真分析;应力;位移;施工技术 [中图分类号]TU393.3 [文献标识码]A[文章编号]1002-8498(2016)14-0076-04 Construction Simulation Analysis of Space Grid Connected Structure for Shanxi Grand Theater Jiao Jinfeng Ma Jinlu Lei Honggang (College of Architecture and Civil Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China) Abstract:Aimed at Shanxi Grand Theatre space grid connection structure using finite element software and considering the time-varying effect of construction process the structure was analyzed including the whole construction process simulation disposable loading the whole construction process simulation under temperature stress and temperature stress in using.The results show that the construction scheme is feasible and it provides a reference for subsequent structural closure temperature selection and structural health monitoring. Key words:steel structures;space grid structures;simulation analysis;stress; displacement;construction 空间网格结构以其跨度大、自重小和施工便利学体育馆钢屋盖的施工过程并且与监测数据进行 等优势已被广泛应用到了诸多大型工程中.由于对比,结果相吻合,文献[5]针对广东科学中心巨型 施工过程中结构的时变效应和强烈非线性的影响, 钢框架结构进行了施工模拟分析,验证了施工过程 施工内力的控制对空间网格结构的顺利施工起到 的合理性.文献[6]采用SAP2000软件对国家游泳 至关重要的作用.目前施工内力计算方法大致有:中心钢结构进行全过程仿真,并为大跨度钢结构工 时变单元法、拓扑变化法及一般单元法1,但是运 程施工仿真分...
2010年9月 施工技术 第39卷第9期 CONSTRUCTION TECHNOLOGY 57 山西大剧院冲孔灌注桩施工技术 孙波 (山西建筑工程(集团)总公司,山西太原030002) [要]山西大剧院工程采用大直经超长冲击成乳灌注及后压浆施工技未.工程粒位按制精度高、地质件直 、后压浆工艺要米高,施工图难.根搭工程难点及提计数,介绍了注及其后压浆施工工艺和施设各,提 出施工质量保证措施.并采用柱基静载试验和低应爱动力检测方法检基施展量.检侧传果证明,基展量 达到委求,采用后压浆工艺可有故提高单承载力,减少工程沉降量. [关键词]山西大剧院:冲孔灌注:后压聚:施工技术:质量检测 [中分类导]TU753.3 [文献识移]A [支章编号]1002-8498(2010)09-0057-03 Construction Technology of Punching Piles in Shanxi Theatre Sun Bo (Shanxi Construction Engineering Group)Co. Taiyuan Shanxi 030002 China) Abstract:Large-diameter superHong punehing piles and post grouting technology are adopted in Shanxi Theatre.The project has some difficulties such as high precision of pile position plex geological conditions and strict requirements on post grouting.According to the difficulties and design parameters construction technology and equipments of bored piles and post grouting are introduced and construction quality ensuring measures are put forward.Furthermore static load test and low strain dynamic test are done to test the piles quality.Inspection results show that piles quality ean meet requirements and the post grouting teehnology can improve single pile bearing capacity and deerease settlement of the structure. Key words:Shanxi Theatre:punching pile:post grouting:construction technology:quality inspection 1工程概况 41.8m 裤身采用C35混凝土.单桩坚向极限抗压承 山西大剔院(见图 载力8956kN 其单桩坚向承载力特为4478kN. 1)位于太原市长风商务 根据低应变检测结果,试柱均为Ⅱ类桩,桩身应力波平 区交化岛,地面积约 均速度4025~4202m/s 673m2 总建面积7.3 2施工难点及对策 万m2 包括1600座主剧 1)位控制精度高 、1200座音乐厅500 图1...
施工技术 2012年7月下 66 CONSTRUCTION TECHNOLOGY 第41卷第369期 山西体育中心三馆结构设计综述 傅学怡,杨想兵,高颖,崔小民,王涛,周坚荣,席向宇 (中建(北京)国际设计顾问有限公司,北京100013) [摘要]山西体育中心体育馆、游泳跳水馆、自行车馆为一大型复杂的体育建筑.根据建筑平面布置,结合结构设 计的具体情况,下部混凝土结构在三馆之间的连接体处设置4条永久缝,划分为5个结构单元;自行车馆与体育馆 之间的连接平台与两馆采用滑动连接,体育馆与游泳跳水馆之间的连接平台与两馆之间结构缝采用双柱形式.上 部钢结构屋盖连成整体支承于下部5个混凝土结构单元上.基础为预应力混凝土管桩.下部为钢筋混凝土框架 剪力墙结构,上部钢结构罩棚采用多重弦支网壳空腹桁架鱼腹桁架组合体系.重点介绍上部钢结构的构成, 并对整体结构在重力、风、地震、温度等多种荷载作用下的变形受力性能进行了详细分析,进行了施工张拉模拟分 析、日照非均匀温度场效应研究、线性和非线性屈曲稳定分析、静力PUSHDOWN分析、多点输入地展反应分析、动 力弹塑性分析、关键节点的局部有限元分析、断索分析等. [关键词]钢结构;预应力;网壳;张拉分析 [中图分类号]TU318 【文献标识码]A 【文章编号]1002-8498(2012)14-0066-07 Structure Design of the Three Pavilions of Shanxi Sports Center Fu Xueyi Yang Xiangbing Gao Ying Cui Xiaomin Wang Tao Zhou Jianrong Xi Xiangyu (China Construction Beijing)Design International Beijing 100013 China) Abstract:Shanxi Sports Center is a plex long span structure with gymnasium swimming and diving pavition and bicycle pavilion.Therefore the whole superstructure can be divided into five districts. Foundation adopts prestressed concrete pipe pile.Reinforeed concrete frame-shear wall structure is adopted in the lower structure and multiple suspended lattice steel structure and vierendeel truss are adopted in the upper steel structure.The whole steel structure is supported by five districts sub reinforced concrete structure.Several key points of structural design are introduced including form of upper steel structure whole structural analysis load analysis buckling analysis PUSHDOWN analysis cable br...
[关键词]钢结构;弦支结构;深化设计:安装;支撑架;张拉 [中图分类号]TU758 [文献标识码]A [文章编号〕1002-8498(2012)14-0073-04 KeyTechnologiesDuringConstructionoftheNew-type StringStructure oftheThreePavilionsofShanxiSports Center Zhou Guan’gen',He Ting',Yu Chonggang',Shen Xiaoda',Luo Bin² (1. Zhejiang Southeast Lattce Frame Co. , Lad. ,Hangzhou, Zhejiang 311209, China; 2. School of Civil Engineering, Southeast Uniesity , Nanjing, Jiangsu 210096, China) Abstract;The steel structure of the three pavilions in Shanxi Sports Center (the bicycle pavilion, gymnasium and the swimming and diving pavilion)is a new-type string stucture, therefore,while under construction, there has been no precedent for reference. The new-type string structure in the construction processof single et shllinstalltion scheme selctionupport jidesigcable installaionand tension on the key techniques are researched and introduced. Key words;steel structures; string structures; detailed design; installation; supports; tensioning 山西体育中心三馆(自行车馆、体育馆、游泳跳 度,从而减小荷载作用下结构的最终挠度,在充分 水馆)位于太原市晋源区,为复杂的大型连体建筑 利用两种不同材料性能的基础上既发挥了拱结构 (见图1)。
[关键词】隧道工程;软岩;铁路;支撑 [中图分类号】U455.49【文献标识码】A[文章编号】1002-8498(2014)10-0123-04 Construction of Support Replacement with Cable in Large-span and Large-section Tunnel in Mountain Area with Soft Rock Xu Hongpeng (The 2nd Engineering Co.,Lid.of the 13th Bureau Group of China Railway,Shenzhen,Guangdong 518083,China)
are shallowly buried and in poor geological conditions. Before the construction of the final lining, removing the temporary support bees an important factor that affects the stability of the surrounding rock stability and loading state of the primary support. Based on the four-line railway station tunnel located in the exit section of the Wumeng Mountain second tunnel,the risk of using pre-stressed anchor cables to replace the temporary support was studied. Key words;tunnels; soft rock; railways; supports 0引言曲线半径大、地形地质条件复杂、环保要求高等多 为适应我国经济和社会的快速发展,缓解运输种因素的制约,铁路沿线部分地段设站条件极为困 能力紧张、实现大能力快速运输,减少环境污染,进难。
【关键词】公路工程;山区公路;路基;静力特性;数值模拟;有限元分析 [中图分类号】U416.1 【文献标识码】A [文章编号】1002-8498(2017)05-0087-04 ResearchonEcologicalDouble-deckerSubgradeAppliedin MountainousRegions Fang Chao,Sun Guofu,ZhangXiaoxia,Wang Chao (College of Architecture and Civil Engineering,Beijing Unitersity of Technology,Bejing100124,China) AbstractBuilding mountain highway in steep terain,the existing subgrade structure is diffcult to ensure both environmental and economic benefits are good due to the characteristics of mountainous topography. Therefore this paper proposes a new subgrade structure applicable to double-decker traffc which will cause less damage to the mountain natural environment,and pares with the existing subgrade structure from the aspects of the environmental impact, engineering cost and construction diffculty, analyzes the static characteristics of four feasible structural forms by finite element software ABAQUS. Key words;road construction;mountain highway; subgrade; static characteristics; simulation;finite element analysis 0引言 由图1分析可知,一般整体式路基的挖方边坡 公路是基础设施建设的重要组成部分,而在山高,土石方量较大;一般分离式路基虽然挖方高度 区尤其是陡坡地形修建公路时,由于山区地形地貌和土石方量较小,但是对自然山体扰动范围大;大 的特点,往往会造成较大的山体扰动、水土流失以跨度棚洞采用洞顶回填的方式对自然山体进行创 及森林植被破坏等,并且容易诱发岩推、滑坡、泥石 面恢复,但开挖及回填土石方量较大,且对结构承 流等不良地质灾害。
施工技术 2011年9月下 52 CONSTRUCTION TECHNOLOGY 第40卷第349期 山东省博物馆新馆大跨度三维双曲面穹顶 钢结构安装技术 李忠卫,袁伟,徐宏志 (中建八局第二建设有限公司,山东济南250022) [摘要]山东省博物馆新馆屋顶弯顶钢结构坐落在标高34.4m的屋面结构上,星半球台状,跨度64m 高26.9m 其 结构体系分屋面壳体和底部桁架两部分.综合工程安装条件及施工成本,果用高空散装工艺.闸述了钢构件制 作、支撑胎架安装、高空散装工艺及支撑胎架卸载等施工过程.安装就位后,各项指标均满足规范要求,确保了弯 顶钢结构安装质量. [关键词]钢结构;穹顶;拼装;施工技术 [中图分类号]TU758.11 [文献标识码]A[文章编号]1002-8498(2011)18-0052-03 Construction of Steel Structures for Large-span Three-dimensional Hyperbolic Dome in New Shandong Museum Li Zhongwei Yuan Wei Xu Hongzhi (The Second Construction Co.Ltd.of China Construction Eighth Engineering Division Ji'nan Shandong 250022 China) Abstract:The steel structures for large-span three-dimensional hyperbolic dome in New Shandong Museum locates on the roof structure in elevation of 34.4m.The hemisphere-shaped steel structure is 64m at span and 26.9m at height which is divided into roof shell structure and bottom truss structure. Combining with assembly conditions and construction investment method of assembly ponents on high-altitude is adopted.Steel ponents making support frames installation assembly on high-altitude and support frames unloading are introduced.After location of the structure all of the reference can meet requirements in standards and the quality of steel structure installation for the dome is ensured. Key words:steel structures;domes;assembly;construction 1工程概况 1300t.如图1所示. 山东省博物馆新馆规划占地约270亩2工程特点及难点 (180000m2) 总建筑面积约82980m2.主体采用 1)钢构件加工难度大结构设计形式新颖,造 钢筋混凝土框架-剪力墙结构,地上5层,南侧檐口 型独特,屋面结构设计为箱形断面双...
施工技术 2014年3月下 46 CONSTRUCTION TECHNOLOGY 第43卷第6期 D01:10.7672/sjs2014060046 屈曲约束支撑与不同结构连接技术研究* 邓松波,王超,李作军,李栋 (中国新兴建设开发总公司,北京100039) [摘要]通过对屈曲约束支撑与不同结构不同连接节点的设计、理论分析、试验验证以及工程实践,对屈曲约束支 撑与钢结构焊接连接节点不同焊接顺序进行研究,找出最合理的节点焊接顺序.针对屈曲约束支撑与混凝土结 构,既有结构连接节点没有可遵循或可参考的连接形式,提出新的节点连接形式并进行理论分析和试验验证.解 决了屈曲约束支撑与钢结构、新建混凝土结构、既有混凝土结构的连接节点问题. [关键词]高层建筑;支撑;节点;焊接;销轴连接 [中图分类号]TU973.13 [文献标识码]A [文章编号]1002-8498(2014)06-0046-04 Research on the Connection of Buckling Restrained Brace with Different Structures Deng Songbo Wang Chao Li Zuojun Li Dong China Xinxing Construction Derelopment General Co. Beijing 100039 China) Abstract:By the different designs theoretical analysis experimental verification and engineering practice of the buckling restrained braces connecting joints with different structures different welding sequence of the connection joints between the buckling restrained braces and steel structures are researched to find the most reasonable joints welding sequence.Because there is no existing connection forms of the connecting joints between the buckling restrained braces and concrete structures a new connection form is put forward and the theory analysis and experimental verification is carried out.The connection problems among the buckling restrained braces steel structures concrete structures and existing concrete structures are solved. Key words:tall buildings;braces;joints;welding;pin connector 0引言 混凝土 可屈服 或砂浆 的钢芯 屈曲约束支撑是由芯板材料、约束芯板材料屈 钢套管 曲的套管和位于芯板材料和套管间的无黏结材料 及填充材料组成的一种支撑构件.这是一种受拉 时同普通支撑,而受压...