2014年5月下 施工技术 第43卷第10期 CONSTRUCTION TECHNOLOGY 1 D0I:10.7672/8gjs2014100001 国家标准《既有建筑改造绿色评价标准》的框架 结构和重点技术问题探讨* 王俊12,王清勤12,程志军1 2 (1.中国建筑科学研究院,北京100013;2.绿色建筑北京市国际科技合作基地,北京100013) [摘要]国家标准《既有建筑改造绿色评价标准》的征求意见稿已于2014年1月24日发布,正在广泛征求意见. 从前期文献调研、已开展的编制工作、内容框架和重点技术问题等3方面对标准的编制工作进行详细介绍,最后对 现阶段工作进行总结并提出下一步工作计划. [关键词]既有建筑;绿色改造;国家标准;评价标准 [中图分类号]TU201.5[文献标识码]A [文章编号]1002-8498(2014)10-0001-03 Discussion on Frame Structure and Key Technical Issues of Standard for Green Performance Assessment of Existing Building Retrofitting Wang Jun.2 Wang Qingqin.2 Cheng Zhijun.2 (1.China Academy of Building Research Beijing 100013 China;2.Beijing International Collaboration Base on Green Building Beijing 100013 China) Abstract:Standard for green performance assessment of existing building retrofitting draft for soliciting opinions)had been released on January 24 2014 and now is soliciting opinions widely.The work process of this national standard is introduced in detailed in this paper including the aspects of literature research work that already carried out framework and important technical issues.Finally the paper summarizes our current work and points out the future work plan. Key words:existing building;green retrofitting;national standard;assessment standard 1背景 规范性文件,有力推动了我国既有建筑节能改造 我国既有建筑面积已经超过500亿m2 其中绿工作. 色建筑面积仅有1.627亿m2(包括绿色建筑设计标 既有建筑绿色化改造对既有建筑改造提出了 识和绿色建筑运行标识项目,数据截至2013年12 更高要求,并不局限于节能改造,而是将改造内容 月底),而绝大部分的非绿色“存量”建筑都存在资 覆盖到“四节一环保”的全部范围,将成为推进既有 源消耗水平偏高、环境影响偏大、工作生活环境亟建筑实现节能减排的重要手段. 须改善、使用功能有待提...
【关键词]基坑;抗剪强度;试验;反分析 [中图分类号]TU459[文献标识码]A[文章编号〕1002-8498(2016)01-0049-03 BackAnalysisofSoilShearStrengthIndexon theFoundation Excavation of China Development Bank Office Building Wang Jianfei',CaoJing² (1.Yunnan Construction Engineering Co.,Ld.,Kunming,Yunnan 650224,China; 2.SchoolofCivilEnginering,KunmingUnivesityofScienceandTechnology,Kunming,Yunnan650500,China) Abstract:The soil shear strength index is an important parameter of foundation excavation supporting design.Due to the factors such as test method and condition,the test results often have some difference with the situ soil shear strength indexes.In this paper,the soil parameter back analysis model based on ACE is adopted to analyze the soil shear strength indexes. The excavation pile horizontal displacement is chosen as the measured target. Then through the regression analysis, the response surface between foundation excavation horizontal displacements of pile and the soil shear strength indexesis obtained.On thisbasis,the Monte Carlosimulation and screening principle are used to analyze the soil shear strength indexes.It provides the reference for the design and construction of the future similar foundation excavation engineering. Key words;foundation excavation; shear strength;tests;back analysis 0引言算法应用在岩土工程位移反分析过程中;邢万波 要参数,限于室内试验方法和条件等因素,使得试变邻域PSO算法的岩土工程反分析方法;文竞舟 验结果往往与原位土体的真实抗剪强度指标值存等利用接触应力对隧道初期支护结构内力进行 在较大差异。
[关键词]FAST;索网;安装;施工通道;施工索道 [中图分类号]TU399 【文献标识码】A [文章编号]1002-8498(2014)02-0018-03 CableNetsInstallation Technology ofNational ObservatoryFASTEngineering WeiFutang,Zhu Wanxu,Tian Leilei (Liuzhou OVM Machinery Co.,Ld.,Liuzhou,Guangxi 545005,China) Abstract;The cable nets installation of the National Observatory FAST engineering includes 2225 main cable joints,6 670 main cables and 2 225 lower tensile cables, which needs high accuracy and difficult construction at high altitude. In order to avoid large stresses during installation and meet ring beam force, five zones were divided for the cable nets symmetrically,and they were constructed synchronously.This technology needed many suspended cableway,whose construction channel was fixed,and construction cableway was movable as installation. Key words:FAST;cable net;installation; construction channel; construction cableway 1工程概况 500m,高度达134m,合计索根数8895根,面索索网 500m口径球面射电望远镜FAST(fivehundred 体量大、分布广,同时受地形制约,无法进行地面组 meters aperture spherical telescope)是我国建造的世 装或搭设满堂架平台,必须借助圈梁进行空间牵引 界第一大单口径射电望远镜,也是国家“十一五”重 安装。
施工技术 2012年2月上 98 CONSTRUCTION TECHNOLOGY 第41卷第358期 国外两座黏土心墙堆石坝反滤料级配包络线 的优化设计 史迅,谢凯军,张全2 (1.中国水利水电第三工程局有限公司,陕西西安710016;2.中国水利电力对外公司,北京100011) [摘要]阿尔及利亚德拉迪斯(Draa diss)和玛乌阿娜(Mahouane)黏土心墙堆石坝反滤料设计粒径范围0.08~ 6.3mm D100=2-6.3mm D85=1.3-4.5mm D15=0.12~0.5mm 含泥量(<0.08mm颗粒)≤5%.采用石灰岩 经过粗、中、细破碎、冲洗、筛分生产工艺制得.依据美国工程师指南,对两大坝反滤料原设计级配包络线进行了优 化设计,优化设计后,反滤料粒径范围为0.08-12.5mm D100=3~12.5mm D85=1.75~8mm D15=0.13- 0.63mm.使两个工程反滤料生产获得率分别由10.4m3/h和15m3/h提高到45m3/h和55m3/h 缓解了生产与填筑 需求矛盾,降低了反滤料生产成本. [关键词]大坝;反滤料;级配曲线:包络线;优化设计;设计准则 [中图分类号]TV44 [文献标识码]A[文章编号]1002-8498(2012)03-0098-03 The Optimization Design of Filters Gradation Envelope Curve of Two Overseas Earth-rock Fill Dams with Clay Core Shi Xun' Xie Kaijun' Zhang Quan2 (1.SINOHYDRO Engineering Bureau 3 Co.Ltd.Xi'an Shaanxi 710016 China; 2.China International Water Electric Co.Beijing 100011 China) Abstract:The Algeria Draa diss dam and Mahouane dam are the earth-rock fill dams with clay core.The designed particle size range of filters are 0.08~6.3mm D100 =2~6.3mm D85 =1.3~4.5mm D15= 0.12~0.5mm and the mud content is smaller than 5%(<0.08mm of particle size).The filters are made of the limestone by passing through rough-middle-thin crushing flushing and sieving process system.Based on American engineer guide Engineering and design earth and rock-fill dams-general design and construction considerations the original design of filters gradation envelope curve was optimized.After that the particle size range of filters are 0.08~12.5mm D100 =3~12.5mm D85= 1....
2015年11月上 施工技术 第44卷第21期 CONSTRUCTION TECHNOLOGY 47 D0:10.7672/sgjs2015210047 国内首幢CFRP索悬挂建筑结构施工技术* 蔡文华,郁步军,张继文2,梁书亭2 (1.盐城工学院土木学院,江苏盐城224051;2.东南大学混凝土及预应力混凝土结构 教育部重点实验室,江苏南京210096) [摘要]目前,对于大跨网壳、桥梁、隧道等重要结构进行施工过程分析的文献已有不少,但高层、超高层、特殊结构 的结构施工过程分析的文献却较少.介绍了国内首幢CFRP索悬挂建筑结构施工方案的确定,通过不同吊装方案 时悬挂大梁内力的对比分析,确定吊索张拉方案;运用ANSYS有限元软件对施工过程进行数值模拟,确定各吊索 的张拉控制力.计算分析表明,悬挂结构试点工程的施工分析,可以较为准确地反映出结构的内力,变形情况,比 选出较优方案. [关键词]悬挂建筑结构;施工过程;数值模拟;CFRP索 [中图分类号]TU758 [文献标识码]A [文章编号]1002-8498(2015)21-0047-04 Construction Technology of the First CFRP Cable Suspended Structure in China Cai Wenhua' Yu Bujun' Zhang Jiwen2 Liang Shuting? (1.College of Civil Engineering Yancheng Institute of Technology Yancheng Jiangsu 224051 China; 2.Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education Southeast University Nanjing Jiangsu 210096 China) Abstract:Currently there are many analysis on construction process of the documents about important structure such as span network shells bridges tunnels etc.But there is rare about high-rise structure ultra-high-rise structure and the special structure.Firstly the construction program of the first CFRP cable suspended structure in China is confirmed.Then sling tension scheme is determined through the parative analysis of hanging beams internal forces in different lifting programs.Finally the sling tension control is ascertained by using ANSYS software to simulate the construction process.The calculation result indicates that construction analysis...
【关键词】开合屋盖;移动方式;活动屋盖;驱动系统;应用现状 【中图分类号】TU245 【文献标识码】A【文章编号】1002-8498(2010)08-0001-07 ApplicationSituationandPracticeofRetractableRoofinChinaandAbroad Fan Zhong,Zhao Changjun,Li Li, Yang Su, Wang Yihua, Fan Xuewei (China Architecture Design & Research Group,Beijing 100044,China) AbstractRetractable roof has been developed greatly in China and abroad recently years as a relatively new kind of architectural form. The condition and fort can be improved greatly. The opening and closing types of roof are connected with the building designs and functions, the types of retractable roof are enriched continuously. The actuation control system of retractable roof should be integrated with the roof form then technology reliability can be ensured. The structure carrying the retractable roof should have enough stiffness, which can avoid track deformation. The movable roof should be constructed with flexible structure and light roofing material, which is favorable to control the driving force and improve the ability to adapt the uneven deformation of tracks.Authors review the characteristics of retractable roof, the application in recently years and the design practice. Key words;retractable roof; moving pattem; moving roof; driving system; application situation 从20世纪80年代末开始,大型开合屋盖工程在带有开合屋盖的工程正在建设"”。
施工技术 2013年6月上 52 CONSTRUCTION TECHNOLOGY 第42卷第11期 D0I:10.7672/sgj2013110052 嘉陵江亭子口水电站帷幕灌浆试验研究 秦志国,熊高明 (中国水利永电第七工程局有限公司,四川成都610034) [摘要]嘉陵江亭子口水电站因地质条件复杂,岩体微裂隙相对较发育,特别是位于两岸坝肩的K长石石英砂岩 (俗称泡砂岩),结构松散,孔隙率高,微裂隙发育,耐压性差,因而灌浆劈裂点低.重点解决的是砂岩、黏土岩、粉砂 岩、岩屑砂岩等的渗流问题.选择了有代表性的区域进行椎帷幕灌浆专项试验,以确保帷幕灌浆施工质量,完善施工 工艺. [关键词]水电站;帷幕;灌浆;试验;施工技术 [中图分类号]TV543 [文献标识码]A [文章编号]1002-8498(2013)11-0052-05 Test Study on Curtain Grouting for Tingzikou Hydroelectric Power Station in Jialing River Qin Zhiguo Xiong Gaoming Sinohydro Bureau 7th Co.Ltd.Chengdu Sichuan 610034 China) Abstract:The geological condition of Tingzikou Hydroelectric Power Station is very plicated.The micro cracks of the rocks are relatively well developed.Especially the K feldspar-quartz sandstone which is located at abutment along two banks has very low grouting splitting resistance because its structure is loose with high porosity well-developed cracks and poor pression resistance.The critical problem to be solved is the seepage of sandstone argillite rock siltstone and lithic sandstone etc. Curtain grouting test was conducted in a representative area to ensure the construction quality and improve the construction process for curtain grouting. Key words:hydroelectric power stations;curtains;grouting;testing;construction 1工程概况 3试验设计及施工方法 亭子口水电站帷幕灌浆设计总进尺6.5万m 3.1试验设计 帷幕灌浆初步设计方案为布置双排帷幕灌浆孔,孔 选定试验区域分A B2区,针对初步设计阶段 距2.5m;河床封闭帷幕及两岸山体主防渗帷幕按单河床坝段主帷幕及封闭帷幕分别设计为双排2.5m 排孔布置,孔距2.0m 特殊地质缺陷部位视情况 孔距及单排2.0m孔距的布置形式. 加密. 1)考虑到坝基岩屑砂岩、石英砂岩、粉砂岩等 2帷幕灌浆试验目的 地层的岩体微...
施工技术 2012年5月下 54 CONSTRUCTION TECHNOLOGY 第41卷第365期 嘉盛购物中心外广场防水技术 宋向东 (广州越市职业学院城市建设工程系,广东广州510405) [摘要]针对建筑外广场面积较大,防水层施工要求较高的特点,结合嘉盛购物中心工程实践,述了建筑外广场 防水施工工艺流程、材料选用、主要施工技术措施和质量控制要点,确保了防水工程的施工质量.经检查验收,未 发现渗漏,高质量高效率地完成了防水工程施工,效果良好. [关键词】防水工程;防水卷材;施工技术 [中图分类号]TU761.11 [文献标识码]A[文章编号]1002-8498(2012)10-0054-02 Waterproofing of Jiasheng Shopping Center Square Song Xiangdong Department of City Construction Engineering Guangzhou City Polytechnie Guangzhou Guangdong 510405 China) Abstract:In view of large area of the construction center square and the high construction requirements of waterproof layer bining with Jiasheng Shopping Center project the process of waterproofing construction materials choice main construction measures and quality control points are described.The construction quality is ensured by above measures.The result shows that the square has a good waterproofing effect and the construction quality is ensured without leakage. Key words:waterproof;waterproofing membrane:construction 1工程概况 涂料相比,优势在于:第1遍(底涂)涂刷时加人少 嘉盛购物中心建筑面积6万m2 占地约1.5万 量渗透剂,能使该涂料充分渗透到水泥砂浆、混凝 m2 建筑总层数6层,框架结构,地下室设有一层停 土毛细孔,使混凝土、水泥砂浆结构更加密实,不易 车库.建筑外广场面积为5000m2 防水层采用渗水,在充分渗透过的基面上涂刷多遍防水浆料, 5mm复合防水,其中2mm厚SK聚合物水泥涂料1很快形成多层结膜,且与基面黏结牢固,形成整体 道,两层复合1.5mm厚Psylic PVC防水卷材. 坚韧的柔性防水层. 2主要施工工艺 SIK防水浆料(I型)主要性能指标(参照《聚 混凝土基层→20mm厚纤维加强1:2.5水泥 合物水泥防水涂料》JC/T894一2001)如下:①固体 砂浆找平层→2.0mm厚SIK聚合物水泥防水涂料含量65%;②干燥时间表干时间≤4h 实干时间 →1.5mm厚PvC复合防水卷材→1.5mm厚8h;③拉伸强度1.8MPa;④断裂伸长率200%;⑤潮 Psylie PVC防水卷材(建议将隔离层放在隔热层上)湿基面黏结强度≥0.5MPa;⑥低温柔性要求 →20mm...
2016年5月上 施工技术 第45卷第9期 CONSTRUCTION TECHNOLOGY 39 D0I:10.7672/sgj82016090039 哈尔滨市华南城3号交易广场塔式起重机拆除技术 孟昭,于雷,杨红刚 (中建三局集团有限公司,黑龙江哈尔滨150000) [摘要]哈尔滨市华南城3号交易广场在工期紧、建筑物中心塔式起重机不能用周边塔式起重机直接拆除等困难 下,利用屋面式起重机拆除塔式起重机.在施工前综合设计分析屋面式起重机的安装位置、地下室顶板加固、各台 塔式起重机的先后拆除顺序,最终确保塔式起重机安全拆除.重点介绍塔式起重机拆除的设计思路、安装屋面式 起重机及拆除时的关键技术. [关键词]安装;建筑机械;塔式起重机;拆除;施工技术 [中图分类号]TU758 [文献标识码]A [文章编号]1002-8498(2016)09-0039-02 Demolition Technology of Tower Crane at No.3 Exchange Plaza of Huanancheng in Harbin Meng Zhao Yu Lei Yang Honggang China Construction Third Engineering Bureau Co.Ltd. Harbin Heilongjiang 150000 China) Abstract:Harbin No.3 Exchange Plaza tower cranes can not be demolished by the around tower cranes directly.The roof hanging cranes are used to demolish the tower crane.Installation location of roof hanging cranes basement roof reinforcement removal order are analyzed before construction.The design ideas of demolition of tower crane and installation and demolition of the roof hanging cranes are introduced in detail. Key words:installation;machinery;tower cranes;demolition;construction 1工程概况 重机安装→塔式起重机配重拆除一→塔式起重机第1 哈尔滨市华南城3号交易广场为哈尔滨市重点 节起重臂拆除→塔式起重机第2节起重臂拆除→塔 建设的商贸物流项目.建筑总高度22.3m 建筑面 式起重机平衡臂拆除→塔式起重机塔帽拆除→塔 积达30万m2 其中地下1层、地上4层,东西向长 式起重机回转拆除→塔式起重机标准节拆除→ 370m 南北向长176m 建筑基底面积达6.4万m2. QTZ400屋面式起重机拆除. 工程为框架结构,具有基底面积大、超长无缝等施 2.2塔式起重机拆除操作要点 工难点,塔式起重机布置时需充分考虑覆盖问题,2.2.1安装QTZ400屋面式起重机 故需在建筑中心布置1台TC5610型塔式起重机 QTZ400屋面式起重机支承于主体屋面,设计屋 (即3号塔式起重机).而传统拆除思路利用汽车 面式起重机中心与建筑结构柱中心重合,在进行 式起重机在建筑物周围进行拆除,通过对吊转半径 QTZ400屋面式起重机安装前,利用通用...
2015年10月下 施工技术 第44卷第20期 CONSTRUCTION TECHNOLOGY 55 D0I:10.7672/sgjs2015200055 哈尔滨大剧院钢结构设计施工关键技术 陈桥生,裴志清,李鸿骏 (上海宝冶集团有限公司,上海200941) [摘要]随着国民经济的飞速发展和国民素质的整体提高,大型复杂剧院越来越多,其结构形式也越来越复杂.以 哈尔滨大剧院为例,重点介绍了如何根据剧院钢结构复杂多变的特点,并结合现场实际情况,采用合理的设计施工 技术,细分单元、化繁为简、化难为易,解决复杂异形结构施工繁琐、安装精度高、施工难度大的难题. [关键词]钢结构;网壳;网架;设计;施工 [中图分类号]TU311.41;TU758 [文献标识码]A [文章编号]1002-8498(2015)20-0055-04 Design and Construction Key Technologies for Steel Structure of Harbin Theatre Chen Qiaosheng Pei Zhiqing Li Hongjun (Shanghai Baoye Group Co. Lid. Shanghai 200941 China) Abstract:With the rapid development of national economy and the overall increase of national quality more and more large plex theaters appear and the structure form bees more and more plicated.Taking Harbin Theatre as an example this article mainly introduces how to adopt reasonable design and construction technologies such as unit subdivision and simplification according to the plex and changeful characteristics of theatre steel structure in bination with the actual situation to solve the problem of tedious construction and high installation accuracy and great construction difficulty in plex shape structure. Key words:steel structures;shells;space truss;design;construction 1工程概况 哈尔滨大剧院位于哈尔滨市松北区文化中心 岛内,是黑龙江省会哈尔滨市的地标性建筑,包括 1527座大剧院、385座小剧场、售票厅等.大剧院 地上8层,地下1层,主舞台台仓及乐池部分为地下 2层.小剧场地上3层,地下1层,舞台台仓地下2 层.建筑造型奇特,剧院屋顶呈自由曲面,结构形 图1哈尔滨大剧院建筑效果 式十分复杂,大、小剧场屋顶钢结构之间以温度缝 Fig.1 Architectural effect of Harbin Theatre 断开.根据剧场建筑、功能的分区,大剧院屋顶钢 1)结构形式多样,种类齐全哈...
2015年12月下 施工技术 第44卷第24期 CONSTRUCTION TECHNOLOGY D0I:10.7672/sgjs2015240005 哈尔滨万达茂滑雪乐园东区钢屋盖滑移技术 杨文侠,丁剑强,孔鹏2,蔡蕾,宋文杰2,夏树伟2 (1.江苏沪宁钢机股份有限公司,江苏宜兴214231; 2.上海同新土木工程设计咨询有限公司,上海200092) [摘要]主要介绍哈尔滨万达茂滑雪乐园东区屋盖高胎架、高支架、大跨度、带坡度累积滑移施工技术的运用.在 方案设计过程中,重点对滑移施工全过程支架及胎架的强度及稳定进行分析,采用同步滑移技术进行施工全程控 制与调整,确保结构稳定、受力合理. [关键词]钢结构;屋盖;高支架;胎架;滑移 [中图分类号]TU758.11 [文献标识码]A[文章编号]1002-8498(2015)24-0005-03 Sliding Technology for Eastern Steel Roof in Harbin Wanda Mall Skiing Paradise Yang Wenxia' Ding Jianqiang' Kong Peng? Cai Lei' Song Wenjie2 Xia Shuwei (1.Jiangsu Huning Steel Mechanism Co.Ltd. Yixing Jiangsu 214231 China; 2.Shanghai Tongxin Civil Engineering Design Consulting Co.Ltd.Shanghai 200092 China) Abstract:The application of sliding technology are mainly introduced for eastern steel roof of Harbin Wanda Mall Skiing Paradise with high jig high support structure large span and slope.During the design of the project the analysis of strength and stability of jigs and support structure are mainly important in the whole process of the sliding construction.The control and changes of the whole process is carried out by using the synchronous sliding technique which ensures the structure stable and the force is reasonable. Key words:steel structures;roofs;high support;jigs;sliding 1工程概况 西区钢结构 中区钢结构东区钢结构 哈尔滨万达茂滑雪乐园建成后将是世界上最 大的室内滑雪场,位于哈尔滨市松北区.该项目结 构最高标高为117m 总长约500m.整体结构由东 区、中区、西区3部分组成(见图1),从西向东呈弧 度上升,通过伸缩缝断开. 图1滑雪乐园结构分区 东区屋盖为大跨度巨型桁架结构,总重约 Fig.1 Steel structure partion of skiing paradise 2500t.主要由横向主桁架、次桁架、纵向桁架、...
施工技术 2011年8月下 30 CONSTRUCTION TECHNOLOGY 第40卷第347期 呼和浩特东站钢结构施工技术 杨智燕 (中铁建工集团有限公司北京分公司,北京100070) [摘要]结合工程情况,呼和浩特东站站房工程通过采用先施工钢结构,再进行下部钢筋混凝土结构施工的方案, 解决了钢结构施工难题.同时,通过对屋盖弯顶、站房屋盖钢结构以及球面网壳桁架等进行合理分区、分段,大大 提高了钢结构安装效率,确保了施工质量和施工安全. [关键词]钢结构;安装;屋盖;弯顶;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2011)16-0030-03 Construction Technology of Steel Structure for Hohhot East Railway Station Yang Zhiyan (Beijing Branch of China Railsway Construction Engineering Group Co. Lid.Beijing 100070 China) Abstract:Based on the engineering situation the method of constructing steel structure first and then constructing reinforced concrete in bottom is adopted in Hohhot East Railway Station house.Problem of steel structure construction is solved.Meanwhile through reasonable area and section division to roof dome steel structure and spherical grid frame installation efficiency is improved and construction quality and safety are ensured. Key words:steel structures;installation;roof;domes;construction 1工程概况 中央区域为球面屋盖结构,直径81m 中间开1 新建呼和浩特东站总建筑面积102189.38m2 个12m圆形开口,沿屋盖径向按圆心角7.5°间距设 其中客运站房建筑面积43543m2.主站房为框架结置.桁架由箱形截面构件组成,用于标高25.100~ 构钢结构,分为出站层、站台层、高架候车层3层,31.400m屋面.该区域柱网呈正三角形布置,柱距 局部4层,建筑高度45.5m(见图1). 62.354m.平面布置采用主次桁架,其中支承于柱 上的主桁架高度为4.2m 上、下弦和腹杆均采用箱 形截面.支承于主桁架上的次桁架高度为4.2m. 2工程特点及难点 本工程主体为钢筋混凝土结构和钢结构,建筑 物每个部分相对独立,通过土建结构连接成一个整 体.整个火车站站房钢屋架呈曲面,各点标高不一, 主要构件超长,跨度大,对吊装提出很高要求. 2.1结构施工难度大 图1呼和浩特东站 本工程结构尺寸大(89.65m×346.542m) 如 Fig.1 Hohhot East Railway Station 果按常规施工方法,先进行下部钢筋混凝土结构施 站房钢结构主体呈“莲花”状,主要包括球面屋 工,再进行钢结构施工难...
2012年10月上 施工技术 第41卷第374期 CONSTRUCTION TECHNOLOGY 65 后装可拆式钢抱箍桩柱塔式起重机基础施工技术 陆建飞,刘建平,张旭洪 (中天建设集团有限公司,浙江杭州320000) [摘要]桩柱钢抱箍式混凝土承台塔式起重机基础是一种新型塔式起重机基础结构体系.它是由混凝土承台、钻 孔灌注桩和桩身的后装钢抱箍组成的塔式起重机基础结构,和钢管桩塔式起重机基础类似,该塔式起重机基础不 仅可为土方开挖和混凝土底板浇筑提供垂直和水平运输的机械,而且还可以加大塔式起重机的工作半径,从而节 省工期、提高工效.除此之外,该施工技术在施工方面却更为简单,设计更加合理,还具备成本投人低、可循环利用 的优势. [关键词]基础;塔式起重机;钢抱箍;承台;钢板止水环;施工技术 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2012)19-0065-03 Construction Technology of Tower Crane Foundation with Afterinstallation Detachable Steel Embrace Loop Pile Lu Jianfei Liu Jianping Zhang Xuhong (Zhongtian Construction Group Co. Ltd. Hangzhou Zhejiang 320000 China Abstract:Concrete pile cap crane foundation with steel embrace loop pile is a new type of crane foundation structural system.It consists of concrete pile cap screw holes filling pile and the steel embrace hoop on pile shaft.Similar to steel pipe piles crane foundation this crane foundation structural system not only can provide vertical and horizontal transportation machinery for casting concrete slabs and soil excavation but also can increase the work radius of crane tower which results less construction time and higher efficiency.Compared with other construction technologies the construction technology is featured by simpler operation more reasonable design.It also obtains the advantages of as low cost and recyclable. Key words:foundations;tower crane;steel embrace loop;pile cap;steel water stop ring;construction 1工程概况 混凝土承台塔式起重机基础,使立塔工作可以在土 天津滨海国泰大厦工程位处天津市响螺湾中方开挖之...
施工技术 2012年11月下 30 CONSTRUCTION TECHNOLOGY 第41卷第377期 后张法现浇预应力箱梁起拱与下挠的施工控制 贺洪儒,宋伟明,邱永会 (中交二航局第二工程有限公司质量检测所,重庆400016) [摘要]针对现浇箱梁施工各环节产生结构起拱和下挠影响因素的研究,得出通过采取预设一定反拱度、采取高性 能混凝土和高性能浆液、提高桥梁钢筋及预应力体系的安装定位精度以及混凝土和孔道压浆的精细化施工等措 施,减少混凝土的收缩徐变,提高混凝土匀质性和整体性能,使箱梁起拱和下挠控制在合理范围内,使桥梁结构的 耐久性和使用寿命得到保证. [关键词]混凝土;箱梁;预应力;起拱;下挠;施工控制 [中图分类号]TU755;TU448 [文献标识码]A [文章编号]1002-8498(2012)22-0030-03 Construction Control of Arching and Downward Deflection for Cast-in-place Box-girder with Post-tensioning Method He Hongru Song Weiming Qiu Yonghui (Inspected Department The 2nd Engineering Co.Ltd.of CCCC Second Harbour Engineering Co.Ltd.Chongqing 400016 China) Abstract:Based on the research of factors influencing the arching and downward deflection of cast-in- place box-girders at each construction stage a series of construction measures are proposed.They include pre-setting certain anti-arch degree use of high performance concrete and high performance slurry improving the installation and positioning accuracy of steel reinforcements and pre-stress system of the bridge refining the construction for concrete and duct grouting etc.These measures can reduce the concrete shrinkage and ereep improve the concrete uniformity and integrity control the arching and downward deflection of cast-in-place box-girders within a reasonable range and guarantee the bridge durability and service life. Key words:concrete;box-girder;prestressing;arching:downward deflection;construction control 1工程概况 配制具有良好体积稳定性的高性能混凝土,确 泰州长江公路大桥接线工程(泰...
施工技术 2015年4月上 90 CONSTRUCTION TECHNOLOGY 第44卷第7期 D01:10.7672/sjs2015070090 后压浆大直径超长钻孔灌注桩试桩工艺 柯洪,赵春宏1,朱宾勤1,吴翔2,王继华1,汪浩3 (1.中国能源建设集团云南省电力设计院有限公司,云南昆明650051;2.中国地质大学(武汉)工程学院, 湖北武汉430074;3.中国建筑第三工程局有限公司,湖北武汉430074) [摘要]以天津某超高层工程为例,介绍了大直径超长钻孔灌注桩试桩方法和工艺,包括试桩成孔工艺、灌注桩施 工工艺和试桩工艺.主要介绍了成孔施工过程的要求,双护筒的设计与施工,反力系统的设计与制作,监测系统设 置以及加载方式等. [关键词]桩基础;高层建筑;试桩;施工工艺;监测 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2015)07-0090-03 Pile Testing Process of Large Diameter and Super Long Bored Pile with Post Grouting Technique Ke Hong' Zhao Chunhong' Zhu Bingin' Wu Xiang2 Wang Jihua' Wang Hao (1.China Energy Engineering Group Yunnan Electric Power Design Institute Kunming Yunnan 650051 China; 2.Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China; 3.China Construction Third Engineering Bureau Co. Ltd.Wuhan Hubei 430074 China) Abstract:Based on an engineering practice in Tianjin this paper introduced testing pile process and methods of the large and super-long bored pile such as testing pile process pile-forming and testing. The requirement in pore-forming construction design and construction of double protecting sleeve reaction system design monitoring system setting and loading mode were introduced in detail. Key words:piles;tall buildings;testing piles;construction;monitoring 1工程概况 N 天津某117层塔楼建筑高度约597m 塔楼楼层 020508011014 平面呈正方形,大楼首层平面尺寸约67m×67m. D6 D9 D12试桩 塔楼基础为超长后压浆钻孔灌注桩,为了确定超长 01 04 07 010013 后压浆钻孔灌注桩的承载特性,需进行试桩试验. 图1D区试桩和锚桩分布示意 在塔楼布置场地内进行了2组试桩,第1组试桩区 Fig.1 Distribution of test...
施工技术 2014年7月下 6 CONSTRUCTION TECHNOLOGY 第43卷第14期 D0I:10.7672/sgjs2014140006 厚壁离心铸钢管稳定承载力与设计方法研究 郭彦林,王洁,林冰,朱博莉2 (1.清华大学土木工程系,北京100084;2.西安交通大学人居环境与建筑工程学院,陕西西安710049) [摘要]因为工程中常用的轧制及焊接两种钢管的制作工艺均无法实现厚壁钢管的制作,为此厚壁离心铸钢管在 建筑钢结构工程中便开始应用.广州新白云国际会议中心工程首次采用了厚壁离心铸钢管作为其主要受力构件. 目前,国内外关于厚壁离心铸钢管的研究成果很少,规范中也缺乏相应的设计依据.对厚壁离心铸钢管抗弯及偏 心受压构件进行了承载性能试验,研究了铸钢管的受力性能.结合有限元数值分析对厚壁离心铸钢管在偏心荷载 作用下的稳定极限承载力进行了研究,获得了偏心受压构件M承载力相关曲线,并与试验结果进行了对比.最 后给出了厚壁离心铸钢管轴心受压及偏心受压构件的稳定设计方法. [关键词]铸钢管;轴心受压;偏心受压;构件;承载力;稳定系数 [中图分类号]TU511.11 [文献标识码]A [文章编号]1002-8498(2014)14-0006-05 Instability Behavior and Design of Thick-walled Centrifugal Casting Steel Tubes Guo Yanlin' Wang Jie' Lin Bing' Zhu Boli2 (1.Department of Civil Engineering Tsinghua University Beijing 100084 China; 2.School of Human Settlements and Civil Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China) Abstract:Thick-walled steel tubes can not be manufactured very well by rolling and welding.Therefore thick-walled centrifugal casting steel tubes has found its application in the steel structure buildings for example it has been used as primary members in Gangzhou Baiyun International Conference Centre. Whereas little literature is available pertaining to the application and design of thick-walled centrifugal casting steel tubes.An experimental program is carried out to investigate the ultimate load-carrying capacity of thick-walled centrifugal casting steel tubes subjected to bending and eccentrically pression respectively.Afterwards the finite elem...
2012年10月下 施工技术 第41卷第375期 CONSTRUCTION TECHNOLOGY 89 华西龙希国际大酒店裙房多层曲面网架安装技术 周琦,蔡金志 (中建钢构阳光惠州有限公司,广东惠州510640) [摘要]华西龙希国际大酒店裙房为多层曲面网架结构,结构复杂、节点坐标定位要求高、施工难度大.根据结构 特点和现场条件,采用了满堂脚手架及集束钢管柱支撑、高空散拼与单元拼装相结合的安装技术、全站仪三维空间 坐标测量控制技术,完成了复杂造型的网架工程安装.同时介绍了网架临时支撑卸载的基本原则及方法、卸载工 艺及顺序、卸载变形监测等. [关键词]钢结构;裙房;网架;安装;卸载 [中图分类号]TU758.1 [文献标识码]A[文章编号]1002-8498(2012)20-0089-04 Installation Technology of the Multi-layer Curved Space Truss of the Podium in Long Wish Hotel International Zhou Qi Cai Jinzhi (China Construction Steel Structure Sunbright Huizhou Co.Ltd.Huizhou Guangdong 510640 China) Abstract:The podium of Long Wish Hotel International is a multi-layer curved space truss structure.The plex structural form imposes high requirements to node coordinate positioning and brings construction difficulty.According to the structural characteristics and field situation the full scaffolds and collected steel tube column were used for supports the bination of the partial assemblies at high altitude and unit assembly were used for installation and the total station instrument was used for measurement and controlling of the 3D coordinates.These technologies were shown to have successfully finished the construction of the space truss.This paper also introduced the basic principle and methods of the unloading of temporary supports for the space truss as well as the technique and sequence of unloading and unloading deformation monitoring. Key words:steel structures;podium;space truss;installation;unloading 1...
2012年4月上 施工技术 第41卷第362期 CONSTRUCTION TECHNOLOGY 101 动水动态信息化注浆模型的建立及初步应用 邓尤东 (中国建筑第五工程局有限公司,湖南长沙410004) [摘要]鉴于岩溶富水隧道地质条件的复杂性和动水分布的不均匀性,以重庆市轨道交通一号线中梁山隧道工程 帷幕注浆为例,以第6循环K25619一K25649段动态信息化注浆为研究对象,根据实际地质情况,建立了动水 动态信息化注浆模型.在中梁山隧道岩溶富水椎幕注浆过程中,以注浆模型为指导,探究信息化帷幕注浆堵水,寻 求一种新型的注浆思路,实现科学、文明、快速、高效注浆. [关键词]隧道工程;帷幕注浆;信息化;动态;模型 [中图分类号]U455.49[文献标识码]A [文章编号]1002-8498(2012)07-0101-02 Establishment and Application of Dynamic Information Grouting Model for Dynamic Water Deng Youdong China Construction Fifth Engineering Division Co.Lad.Changsha Hu'nan 410004 China) Abstract:According to the plicated geological conditions and inhomogeneity of dynamic water in karst rich water tunnel based on curtain grouting project of Zhongliangshan tunnel engineering in Chongqing Subway Line 1 dynamic information grouting model for dynamic water is set up.In curtain grouting progress based on grouting model the author inquiries a new thought of grouting in order to make grouting scientifically and efficiently. Key words:tunnels;curtain grouting;information;dynamic;model 随着我国铁路及公路建设的跨越式发展,复杂时很可能遇到管道型岩溶水突出,其特点是流量 岩溶区域隧道相继修建,预防及治理岩溶突水涌泥大、压力高,时有流砂,对施工危害大.该岩溶富水 等地质灾害成为隧道施工的主要技术难题12.中段地质条件复杂、岩体破碎、岩溶发育、地下水丰富 梁山隧道掌子面在施工桩号K25443处遇到了超且裂隙连通性较好.综合分析地质素描和超前地 大涌水,面对严峻的工期要求和涌水注浆处理难度质预报,该段岩层地质瞬息万变,掌子面前方的岩 高及周期长的压力,项目部加大对帷幕注浆理论技体质量密度不均,岩层破碎段呈带状分布,并分段 术的研究,引进动水动态信息化注浆模型,并结合出现,没有明显的分布规律;区域水体分布相对 现场施工实践不断动态完善注浆模型.以动态注不均. 浆模型优化注浆方案,指导注浆施工;同时通过分2动水动态信息化注浆模型建立 析整合施工过程数据,不断更新及完善注浆模型,2.1注浆模型建立依据 进而寻求一种新型的、符合工程实际的动水动态信 1)隧道注浆区四周围岩岩性不均...
施工技术 2013年1月上 108 CONSTRUCTION TECHNOLOGY 第42卷第1期 动态测量技术在沉管法隧道施工中的研究与应用 钟伟春,江巨桓,曾淦辉 (广州打捞局,广东广州510260) [摘要]移动干坞制造外形巨大且精度非常高的混凝土管段,因干坞平台及其承载施工的管段处于飘浮状态,无法 直接采用陆地测量技术进行施工放样,而拉线尺量等简易放样方法无法满足管段制作的精度要求.在首次采用移 动干坞新技术施工的广州仑头一生物岛隧道工程中,对动态测量技术的原理、方法及变形影响进行分析研究,利用 经纬仪的结构特点,采用特殊操作方法,实现了动态平台上的精密测量放样,解决了管段制作的精度控制难题. [关键词]隧道工程;沉管;动态测量;移动干坞;精度控制 [中图分类号]TU198;U452.13 [文献标识码]A [文章编号]1002-8498(2013)01-0108-05 Research and Application of Dynamic Measurement Technology in Immersed Tunnel Construction Zhong Weichun Jiang Juhuan Zeng Ganhui Guangzhou Salvage Bureau Guangzhou Guangdong 510260 China) Abstract:When huge concrete tunnel unit is prefabricated on a mobile dock platform as the platform is in a floating state conventional survey method is not feasible for construction survey and setting out. Simple measuring method such as rulers can not meet the accuracy requirement.The Luntou-Biological Island Tunnel of Guangzhou was the first immersed tunnel project which employed the new technology of mobile dock.With respect to this project the theory and operation of dynamic measurement technology were studied as well as the influence of deformation.In this project precise setting out on mobile dock platform was made possible by adopting a special operation of the theodolite making use of the structural characteristics of theodolite.This method solved the difficulty of precision control in concrete unit fabrication. Key words:tunnels;immersed tubes;dynamic measurement;mobile dock platform;precision ...
施工技术 2013年3月下 96 CONSTRUCTION TECHNOLOGY 第42卷第6期 D0:10.7672/sgjs2013060096 加筋土挡墙计算分析* 周春霖,许国光,王力尚,董伟 (中建中东有限责任公司) [摘要]加筋土挡墙作为一种有效的挡土墙技术,以其造价便宜、施工简便等优势在国内外广泛应用.在国内应用 中,格栅形式逐渐代替土工带而成为主流,但目前针对格栅的计算程序编写滞后,难以满足工程需求.首先介绍土 工带和土工格栅两种常用加筋形式,阐述其力学原理、设计计算方法和施工注意事项等,并对两种加筋形进行比 较,然后简单介绍自主编写的加筋土挡墙计算程序的功能和特点,最后以2个工程实例分别说明土工带、格栅两种 加筋形式的计算过程,并与其他计算方式比较以证明程序的正确性和有效性. [关键词]地下工程;加筋土挡墙;设计;计算;软件 [中图分类号]TU476.4 [文献标识码]A [文章编号]1002-8498(2013)06-0096-04 Analysis and Calculation of MSE-wall Technology Zhou Chunlin Xu Guoguang Wang Lishang Dong Wei China State Construction Engineering Corporation Middle East L.L.C. Abstract:As one of the most effective earth-retaining wall technologies MSE-Wall has been used widely all over the.world for its advantages of low cost and easy construction.Recently the geosynthetics used in MSE-Wall is gradually changing from reinforced geobelt to geogrid but there are few software designed for geogrid.This paper firstly introduced and pared the mechanical principle designing and constructing methods of reinforced geobelt and geogrid.After that the function and characteristics of self- developed software MSE calculator V1.1)programmed with Delphi is introduced.Finally the calculation procedures with reinforced geobelt and geogrid are illustrated with two engineering examples and the results are pared to other calculation methods to validate the accuracy of the software. Key words:underground engineering;MSE-wall;design;calculation 加筋土挡墙(mechanical stabilized earth r...