[关键词】公路工程;路基;爆破;边坡稳定性 [中图分类号]U416.113 [文献标识码]A [文章编号】1002-8498(2014)23-0105-04 ApplicationResearchonRockBlastingTechnologyforSubgrade Chen Xudong',Xue Erping²,Zhang Lijun',GaoWenxue,Li Shien²,YeChunlin² (1.Beijing Municipal Road& Bridge Maintenance and Management Group,Beijing100097,China; 2.Bejing Municipal and Highway &Bridge Co.,Ld.,Bejing 100086,China; 3.Beijing Xinwang Highway &Bridge Construetion Co.,Ld.,Beijing 101400,China; 4.CollerchindCilnginengBejingUiityfTehlogBejn002h Abstract;Subgrade rock blasting not only needs to break up the rock,but also needs to control the cuting slope forming.Based on thehighwayblasting,this paper summarized the theory andulti-system National Road No.1llroad reconstruction project,the authors carried out deep controlled blasting technique applied research.Using millisecond precision delay detonation technology for controlling the effect ofblasting vibration on cutting slope stability,and blasting effect was effectively improved. Key words:road construction;subgrade;blasting;slope stability 山区公路工程建设中,当遇到基岩路基与结构研究,取得了理想的爆破效果。
2016年11月下 施工技术 第45卷第22期 CONSTRUCTION TECHNOLOGY 91 D0I:10.7672/5j52016220091 路基分层勘探应力波分析研究* 张宇辉 (中国民航大学机场工程科研基地,天津300300) [摘要]传统路基物探勘察主要依靠钻孔取样,对所得试样进行分析,确定地下土层的状态及具体深度.但对地质 较复杂的多山地区或需要钻孔深度较深的条件下,钻孔取样成本昂贵,且经常因农田或其他限制原因,无法实现钻 探等破坏性勘探工作.有鉴于此,利用应力波测试的便捷手段,结合面波、地震映像等不同测试方法,对路基下部 土层具体分层情况开展研究,确定具体分层深度及固定深度范围内土体特性,并将测试数据与钻探结果进行对比 分析,验证应力波无损测试方法的可行性. [关键词]路基:勘探;应力波:钻探受限;无损测试 [中图分类号]TU195 [文献标识码]A [文章编号]1002-8498(2016)22-0091-04 Study on Stress Wave Analysis of the Subgrade Layered Exploration Zhang Yuhui Base of Airport Engineering Ciril Aviation University of China Tianjin 300300 China) Abstract:The traditional method of subgrade geophysical prospecting and exploring was drilling and sampling test.By analyzing the test sample the state and depth of underground soil layer were confirmed. But the cost of traditional method was expensive in plex geological and mountainous area which needs deeper drilling hole.Besides the destructive exploration job was often forbidden for the reason of farmland or other restrictive conditions.For this reason the convenient stress wave test measures were adopted the methods of surface wave test and image test were bined to study the state of subgrade soil layers.Then the depth of soil layers and the soil characteristics in fixed depth range were confirmed.The stress wave test data were paratively analyzed with the drilling test results.The feasibility of nondestructive stress wave test was verified.The cost of soil layers exploration will be co...
2017年8月上 施工技术 第46卷第15期 CONSTRUCTION TECHNOLOGY 57 D0I:10.7672/8js2017150057 跨海交通基建工程装配式建造关键技术研究 闫禹,范志宏2,苏宗贤1 (1.港珠澳大桥管理局,广东珠海519060;2.中交四航工程研究院有限公司,广东广州510230) [摘要]装配式建造模式,可有效应对海洋环境下的施工风险,对保证工程品质有积极意义,代表了当前大型跨海 交通基建工程的技术发展趋势.以若干典型跨海工程为实例,研究分析了跨海工程技术现状、装配式建造模式的 内涵以及跨海沉管隧道、跨海桥梁、桥隧转换人工岛的关键技术. [关键词]桥梁工程;跨海交通;沉管隧道;人工岛;装配式;施工技术 [中图分类号]U445.4;U455 [文献标识码]A [文章编号]1002-8498(2017)15-0057-04 Key Technologies of Precast Construction for Sea Crossing Transportation Infrastructure Project YAN Yu' FAN Zhihong SU Zongxian' (1.Hong Kong-Zhuhai-Macao Bridge Authority Zhuhai Guangdong 519060 China; 2.CCCC Fourth Harbor Engineering Institute Co.Ltd.Guangzhou Guangdong 510230 China) Abstract:The precast construction mode can effectively reduce the construction risk in the marine environment and has positive significance for guaranteeing the quality of the project.It represents the technological development trend of the large-seale cross sea transportation infrastructure project.Taking several typical sea crossing projects for example in this paper cross sea engineering technology status the connotation of precast construction mode and the key technology of immersed tunnel cross-sea bridge and artificial island are analyzed. Key words:bridges;sea crossing traffic;immersed tunnel;artificial island;precast;construction 1跨海工程建设技术现状 工程实践证明,与传统的劳动密集型施工和粗 跨海交通基建工程对区域经济和社会发展有放型的管理相比,装配式建造模式更符合现代工程 重要影响,选址往往位于江海交汇区、海湾、海峡,管理的要求,在工程理念上更为先进,在应对大规 或由海岸深人外海岛屿,一般采用跨海桥梁、海底 模外海作业风险、提高生产效率、提升工程品质方 隧道或桥隧组合3种结构方案.该...
2013年6月下 施工技术 第42卷第12期 CONSTRUCTION TECHNOLOGY 13 D0I:10.7672/sgjs2013120013 跨既有营业线钢盖梁门式墩施工安全技术 梁启杰,吴泥,程志华 (武警水电第二总队,江西南昌330096) [摘要]以沪昆客运专线赵家里特大桥8号门式桥墩跨既有沪昆铁路上行线施工为实例,结合相关安全技术规范 和现场施工安全技术措施等,从前期现场调查开始,到完成桩基、承台、墩身及钢盖梁吊装施工整个过程,全面分析 跨既有电气化铁路线钢盖梁门式墩施工安全技术,通过做好事前分析、过程控制、严格落实施工安全技术措施,确 保了施工过程安全受控. [关键词]铁路;钢盖梁;桥墩;安全技术 [中图分类号]U443.2 [文献标识码]A[文章编号]1002-8498(2013)12-0013-04 Construction Safety Technology of Steel Cap Beam Portal Pier Crossing the Running Railway Liang Qijie Wu Ni Cheng Zhihua (No.2 Hydropower Force of Armed Police Nanchang Jiangxi 330096 China) Abstract:Taking the construction of no.8 portal pier in Zhaojiali bridge in Shanghai-Kunming passenger dedicated line as an example bining with the safety technical specification and construction site safety technical measures the authors show the whole construction process from the initial site survey to the pile foundation pile cap steel pier and beam hoisting construction analyze in detail construction safety technology of portal pier of steel cap beam crossing the running railway.By the initial site analysis process control and taking construction safety technologies the safety in construction process is controlled sucessfully. Key words:railways;steel cap beam;bridge piers;security technology 1工程概况 8号墩 新建杭州至长沙铁路客运专线赵家里特大桥 杭州三概有线在3 钢盖梁 9号墩 位于江西宜春市,门式墩上跨既有沪昆铁路上行 杭州 2 长沙 线,交叉里程为DK737539.175(既有铁路里程为 7号墩 K948420) 跨线墩位编号为8号桥墩,客运专线 有线盗长沙 与既有沪昆上行线交角为154.57°(见图1).8号 图1门式墩总平面布置 桥墩采用钢盖梁门式墩形式,该结构采用钢梁立柱 Fig.1 The overall layout f...
2011年1月 施工技术 第40卷第1期 CONSTRUCTION TECHNOLOGY 73 跨山谷架空管道机械牵引施工技术 张静,辜碧军 (成都建筑工程集团总公司,四川成都610031) [摘要]基于赤天化纸业污水处理厂工程特点,机械吊装设备难以进人施工现场.在跨山谷架空管道施工过程中, 果用逐依次推进卷扬机扳立技术,成功地解决了管道立柱的安装问题.通过设置固定焊接操作平台和卷扬机高 空桥式水平牵引延伸相结合的技术,避免了焊工高空作业的安全隐患,加快了施工进度,保证了管道焊接质量,节 约了施工成本. [关键词]管道工程;跨山谷;施工技术 [中图分类号]TU741.1 [文献标识码]A[文章编号]1002-8498(2011)01-0073-04 Construction Technology of Overhead Pipeline Machine Traction across Valley Zhang Jing Gu Bijun Chengdu Construction Engineering Group Co.Chengdu Sichuan 610031 China) Abstract:Taking Chitianhua paper sewage plant as example it is difficult for hoisting machine to enter the construction site.During the construction of overhead pipeline across valley the erecting technology is adopted step by step to solve the installation problems of pipeline column.The safety hidden danger at high altitude is prevented by selecting fixed welding platform with horizontal pulling of hosting at high altitude.Thus the construction period is shortened to ensure the quality of pipeline welding which can save construction cost. Key words:pipeline engineering;across valley;construction technology 1工程概况 3技术方案比选 贵州赤天化纸业污水处理厂外排水管从厂区排3.1满堂脚手架搭设 出口至赤水河边,管道为中820x×9螺旋卷管,总长 在架空管道沿线进行满堂脚手架的搭设,使其 450m 沿途需穿越公路、跨越山谷,顺陡坡(约60°)成为辅助吊具及运输通道,利用脚手架设置吊点进 而下.跨山谷处,谷底与管道底部高差20多m 最行管道支撑的安装和管道敷设. 大一个山谷跨度132m.架空部分管架共8座,支架3.2汽车式起重机安装 间距13.8m 其中2根为独立钢柱,均为人字钢立 修建临时施工便道,使40t汽车式起重机能够 柱,立柱之间采用325×8钢管连接成整体. 到达吊装区域,对架空管道支撑及管道本体采用汽 2施工难点 车式起重机配合安装. 由于该工程所在地植被茂密、无现成施工道路,3.3机械牵引结合人工微调技术 大型吊装设备无法直接进人施工区域;每个管道人 通过...
施工技术 2014年8月上 94 CONSTRUCTION TECHNOLOGY 第43卷第15期 D01:10.7672/sgjs2014150094 跨国承包商的一体化战略研究* 安慧,郑传军2 (1.三峡大学水利与环境学院,湖北宜昌443002;2.东南大学土木工程学院,江苏南京210096) [摘要]针对国际和国内建筑业发展态势,对建筑业目前的一体化战略趋势进行了经济学解释,分析了纵向一体化 和横向一体化的经济学动因和特点,并在此基础上探讨了我国跨国承包商的一体化战略,指出针对市场环境和特 点综合应用两种一体化战略是中国跨国承包商的战略选择. [关键词]项目管理;跨国承包商;纵向一体化;横向一体化;战略 [中图分类号]TU-920.4;F407.9 [文献标识码]A[文章编号]1002-8498(2014)15-0094-04 Study on the Integration Strategy of Transnational Contractor An Hui' Zheng Chuanjun2 (1.College of Hydraulic and Enironmental Engineering China Three Gorges University Yichang Hubei 443002 China: 2.School of Ciril Engineering Southeast University Nanjing Jiangsu 210096 China) Abstract:Aiming at the development trend of international and domestic construction industry this paper conducted economic explanations to the integration strategy trend in current construction industry.The motivations and characteristics of vertical integration and horizontal integration were analyzed.On the base of it the integration strategy of Chinese transnational contractors was discussed.This research shows that the prehensive application of the two integration strategy according to market environment is the strategic choice of Chinese transnational contractors. Key words:project management;transnational contractor;vertical integration;horizontal integration;strategy 后金融危机时代,世界经济持续低迷,国内投1建筑业态势 资趋缓,我国跨国承包商面临着双重市场风险.目1.1国际建筑业态势 前,欧美等国际承包商在发展EPC和PMC等一揽 自2008年以来,国际建筑业受金融危机影响增 子承包上具有先发优势并通过并购重组实现了多速放缓,市场波动风险明显,世界各主要国际工程 元化的市场和业务布局,主...
2016年8月下 施工技术 第45卷第16期 CONSTRUCTION TECHNOLOGY D0I:10.7672/8js2016160001 设计施工一体化是装配式建筑发展的必然超势 张守峰 (中图建筑设计院有限公司,此京100044) [摘委]首先回顾了我图建筑工业化的发展历程,然后结合郭公庄公租房项目的工程实践,介绍了项目建道过程中 遇到的向题与对策,南了设计施工一体化是装配式建发展的必然超势. [关键词]建工业化;装配式建筑;设计施工一体化;向题;对策 [中图分类号]TU741[交献标识码]A[交章编号]1002-8498(2016)16-0001-05 Design-construction Integrity be Inevitable Trend of Precast Building Development Zhang Shoufeng China Architecture Design and Research Group Co.Lid.Beijing 100044 China) Abstract:This paper firstly overviews the development process of precast in China.Then bining with the Guogongzhuang project the author introduces the occurred problems and countermeasures during the project construction process shows that the design-construction integrity is inevitable trend of precast building. Key words:building industrialization;precast buildings;design-construction integrity; problems;countermeasures 1我国建筑工业化的发展历程 1974年,首次完成了装配式大板住宅标准设计图, 我国从20世纪50年代开始研究建筑工业化,建立了大板生产基地和专业施工队伍,在5个往宅 1956年,国务院发布《关于加强和发展建筑工业的小区推广振动砖壁板为内墙的大板建筑;1975一 决定》指出:“为了从根本上改尊国的建筑工业,1978年,研究改进装配式多大板佳宠,试验推广 必须积极地有步豫地实行工厂化、机械化施工,通装配式高展大板住宅;1978—1985年,装配式大板 步完成对建筑工业的技术改造,步完成向建筑工建筑体系技术成熟,形成了科研、设计、生产、施工 业化的过渡.”经过了20多年的实践,发展了建筑一体化优势和住宅区成片建设的高潮.1985年开 标准化,建立了工厂化和机械化的物质技术基础.始的经济体利改革打破了计划经济的“大锅饭”,引 在一些大中城市,因地制宜地发展了传统技术和现 发了不同类型房屋建筑的性能和价格竞争,在市场 代技术相结含的建筑体系,并逐步向全面建筑工业竞争中装配式大板住宅盛极而衰,王面积运年下 化的方向发展.在原建设部发布的1982年新建佳降;1986年后,由于大板建筑工面积通年下降,混 宅建筑中,采用工业化建筑体系的比重不少城市在 凝土大板生产基地一—住宅壁板厂的产品滞销,销 20%以上,北京市高达70%左右. 售滑坡,1988年企业出现亏损,越亏越多,1990年跌 北京作为首都,60—80年代的建筑工业化...
2011年10月下 施工技术 第40卷第351期 CONSTRUCTION TECHNOLOGY 71 解析法和数值法在基坑降水和回灌 系统设计中的综合应用 耿冬青,刘晓辉2,宋福渊,白晨光,石敬斌 (1.中国建筑股份有限公司技术中心,北京101300:2.中国建筑股份有限公司海外事业部,北京100026) [摘要]以卡塔尔某基坑降水工程为例,综合运用解析法和数值法对基坑降水和回灌系统进行设计计算,通过对比 分析和相互验证,解析法和数值法的计算结果基本一致,并与工程现场实际监测的地下水位和水量较好地吻合,表 明解析法和数值法的综合应用是一种可靠的基坑降水和回灌系统的设计方法. [关键词]地下工程;降水;回灌;解析法;数值法;设计 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2011)20-0071-03 Integrated Application of Analytical Methods and Numerical Methods in the Design of Dewatering and Recharging of Foundation Excavation Geng Dongqing' Liu Xiaohui Song Fuyuan' Bai Chenguang' Shi Jingbin' (1.China State Construction Engineering Co.Lad.Technical Center Beijing 101300 China: 2.China State Construction Engineering Co. Ltd.Overseas Operations Beijing 100026 China) Abstract:Based on certain foundation excavation project in Qatar the analytical methods and numerical methods are used for the design of the dewatering and recharging system.Through parison and checkout of the two methods the design results of analytical methods consists well with that of numerical methods.The design results are validated by monitored groundwater level and water quantity.It proves that the integrated application of analytical methods and numerical methods is a dependable design method for dewatering and recharging system of foundation excavation. Key words:underground;dewatering;recharging;analytical methods;numerical methods;design 基坑降水工程中应用回灌技术不仅减少由于地 -4.3m.因此需将地下水位整体降低1.5m. 下水抽排造成基坑周边地表及建筑物沉降,也节约 由于现场条件限制,没有现成的市政排水...
施工技术 2013年1月下 28 CONSTRUCTION TECHNOLOGY 第42卷第2期 螺栓球节点网架吊装施工在火车站改 扩建工程中的应用 范彬彬,任垒,肖超超,刘国良 (中国地质大学(武汉)工程学院,湖北武汉430074) [摘要]武昌火车站改扩建工程工期紧,对质量、环保要求高,且基础站台车流量大,同时有其他施工,传统网架安 装方法将对基础站台原有正常秩序引起干扰.采用螺栓球节点网架吊装施工技术可以有效解决上述矛盾.通过 对该技术的网架单元和施工工艺的介绍,闹述了现场施工的整个流程,以及网架吊装过程中的质量控制、安全措施 和环保措施的要点.实践证明,螺栓球节点网架吊装施工具有较好的综合效益. [关键词]钢结构;网架;螺栓球节点;吊装;质量控制 [中图分类号]TU758.15 [文献标识码]A [文章编号]1002-8498(2013)02-0028-03 Application of Bolt Sphere Joints Space Truss Hoisting Construction in Train Station Expansion Project Fan Binbin Ren Lei Xiao Chaochao Liu Guoliang Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China) Abstract:Tight construction period excellent quality and high environmental protection were main characters required by Wuchang Railway Station expansion project.But it was big traffic volume and another construction was executing in the basic platform so traditional scaffolding or pick-frame tower truss installation methods would bring interferences to the original normal order to the basic platform.The introduction of hoisting installation to bolt sphere joints space truss was helpful to solve the above conflicts.By the presentation of the element of space truss and technology of the construction method the process of the construction in the site was recorded prehensively what's more the key points of the quality control safety measures and environmental measures in the process were also described.Practice has proved that the construction of hoisting installation ...
施工技术 2011年4月下 30 CONSTRUCTION TECHNOLOGY 第40卷第339期 螺栓球加工精度对网格结构受力性能的影响 梅倩,龚景海 (上海交通大学船舶海洋与建筑工程学院,上海200240) [摘要]以太原机场新航站楼屋盖钢结构为工程背景,对螺栓球节点的屋面网格结构在螺栓孔空间角度存在不同 加工误差的情况采用管结构计算机辅助设计与制造系统软件STCAD进行分析,并将各种情况下结构杆件的轴力、 剪力、弯矩及应力比进行对比,归纳出螺栓球加工误差对螺栓球节点网格结构的影响规律. [关键词]网格结构;螺栓球节点;加工精度:加工误差;受力性能 [中图分类号]TU758.16 [文献标识码]A [文章编号]1002-8498(2011)08-0030-03 Effects on Behavior of Reticulated Structure from the Machining Accuracy of Bolt Ball Mei Qian Gong Jinghai School of Nasal Architecture Ocean and Civil Engineering Shanghai Jiaotong Unisersity Shanghai 200240 China) Abstract:Based on the project of the Taiyuan Airport New Terminal Building the main structure which adopts bolt joints is analyzed by STCAD in the conditions of different maximum angles between neighboring apertures and members axial force shearing force bending moment and stress ratio respectively in each condition are pared.In this way the law of the influence on different forces in reticulated structure due to the bolt balls machining error is obtained. Key words:reticulated structure;bolt joint;machining accuracy;machining error;mechanical behavior 目前,网格结构在国内外已经得到广泛应由3个主桁架构建而成,3个主桁架外悬挑147个 用,但其工程质量却得不到很好保证(241.影响小桁架. 网格结构工程质量的因素很多,对于采用螺栓球节 点的屋面网格结构来说,螺栓球的加工误差是影响 工程质量最重要的因素之一[.由于网格结构种 类较多,其螺栓球节点的规格、大小、孔位、孔数都不 尽相同,节点相邻杆件之间的空间角度变化多,因而 螺栓球节点的加工难度较大,再加上目前国内加工 水平有限,使得螺栓球的加工精度得不到很好保 图1太原机场新航站楼 证[6,从而导致螺栓球节点相邻螺栓孔的空间角度 Fig.1 The New Terminal Building of Taiyuan Airport 存在较大偏差,影响网格结构的整体受力. 高强度螺栓 1工程概况 封板 太原机场新航站楼(见图1)屋盖钢结构,一期 圆钢管 圆管 工...
2012年6月下 施工技术 第41卷第367期 CONSTRUCTION TECHNOLOGY 15 蒲石河300MW大型抽水蓄能机组 轴系安装及轴线调整 王仲陆,周翰青,黄海臣 (武警水电第二总队八支队,福建厦门361009) 【摘要]石河抽水蓄能电站采用单机容量为300MW立轴单级混流可道式水泵水轮发电机组,伞式结构,整个机 组轴线为刚性连接,轴系各部分加工及安装精度要求高.介绍抽水蓄能电站机组轴系各部件的结构,论述了发电 电动机组轴系各部件、推力轴承、推力头的安装工艺和机组整体盘车及轴线调整的实践.通过对机组联轴及轴线 的调整,经机组运行实测显示,3号与4号机组运行效果良好. 【关键词]水电站;抽水蓄能机组;安装:轴系:调整 [中图分类号]TU758:TM312 【文献标识码]A [文章编号]1002-8498(2012)12-0015-04 Shafting Installation and Axis Adjustment for 300MW Pumped Storage Unit of Pushihe Pumped Storage Power Station Wang Zhonglu Zhou Hanqing Huang Haichen No.8 Detachment No.2 Hydroposwer Force of Armed Police Xiamen Fujian 361009 China) Abstract:The 300MW pump storage units are adopted in Pushihe Pumped Storage Power Station with umbrella-shaped structure.The whole unit axis is rigid connection and the processing and installation accuracy of each part of shafting is high.The structure of shafting ponents for pumped storage units are introduced.The practices in shafting ponents of pumped units thrust bearing installation of thrust cone and integral barring as well as axis adjustment are discussed.After shafting installation and axis adjustment for pumped storage units unit 3 and unit 4 in Pushihe Pumped Storage Power Station are operating satisfactorily. Key words:hydroelectric power stations pumped storage unit;installation;shafting;adjustment 1工程概况 上端轴 蒲石河抽水蓄能电站水泵水轮机由哈尔滨电 机厂生产制造,机组额定功率300MW 额定转速 333.3r/min 为单级混流可逆式机组,推力部分在下 机架上,为伞式结构.由于整个机组轴线全部为刚 性连接,不仅对轴系各部分的加工精度要求高,而 且为了控制机组轴线摆度,对安装工作也提出了更 高要求.轴系...
2016年1月下 施工技术 第45卷第2期 CONSTRUCTION TECHNOLOGY 65 D0I:10.7672/sgj2016020065 菱形空间曲面大网格钢结构施工技术 段文付1,杨大勇2 (1.武汉光谷建设投资有限公司,湖北武汉430205;2.湖北省工业建筑集团有限公司,湖北武汉430064) [摘要]光谷国际网球中心5000座网球馆外围钢网格采用双向斜交的菱形空间曲面大网格钢结构,具有结构复 杂、加工安装难度大、要求精度高等特点.结合项目实际,介绍了双向斜交的菱形空间曲面大网格钢结构制作安装 控制要点,并通过有效的施工过程监测,准确高效地完成了钢结构安装任务. [关键词]钢结构;空间结构;网格;吊装;施工技术 [中图分类号]TU758.1[文献标识码]A [文章编号]1002-8498(2016)02-0065-03 Construction of the Large Space Curved Surface Forming Rhombic Grid Steel Structure Duan Wenfu' Yang Dayong2 (1.Wuhan Optical Valley Construction Investment Co.Ltd.Wuhan Hubei 430205 China; 2.Hubei Industrial Construction Group Co.Ltd.Wuhan Hubei 430064 China) Abstract:The 5 000 seats tennis stadium of Optics Valley International Tennis Center (OVITC)adopts large spatial obliquely intersected steel structure forming a space curved exterior surface with rhombic grid which features a tremendous plexities and difficulties in structural arrangement high requirements for manufacturing and site erection.With on-site project experience this article highlights the major controlling and monitoring aspects for the successful construction of the obliquely intersected rhombic steel grid of the OVITC stadium. Key words:steel structures;space structure;grid;hoists;construction 1工程概况 件在工厂加工,共计约6500个杆件,然后在现场进 光谷国际网球中心5000座网球馆外围钢网格 行单元拼装,采用“大型履带式起重机场外分片吊 采用双向斜交的菱形空间曲面大网格钢结构,采用 装、汽车式起重机单元拼装及散件补装”的安装方 三角形钢管双向布置主肋,逆时针布置次肋.钢结 案进行安装.单元拼装只能在网球馆的室外2层平 构顶高度最高达17.000m 场内最大悬挑约为 台,每个单元约重16t 在地面通过250t履带式起重 6.8m 外围钢网格顶口直径为82.6m 分别在平台 机...
施工技术 2011年7月下 52 CONSTRUCTION TECHNOLOGY 第40卷第345期 节能结构一体化产业化住宅研究 王长虹1,杨兴富2 (1.上海应用技术学院轨道交通学院,上海200235;2.上海建工集团,上海200050) [摘要]为缓解资源环境紧张,住宅建筑能耗大的突出矛盾,积极响应时代发展的需要,坚持走节能结构一体化住 宅建设的道路,努力提高产业化住宅的经济性;对比日本和中国香港等地区产业化节能住宅建设的成功经验,深化 节能结构一体化住宅建设成套技术体系的研究,为产业化节能住宅的推广提供参考. [关词]节能;预制装配式;产业化住宅 [中图分类号]TU973.12 [文献标识码]A [文章编号]1002-8498(2011)14-0052-04 Research on Industrial Houses of Energy-saving and Structural Integration Wang Changhong' Yang Xingfu (1.School of Railseay Transportation Shanghai Institute of Technology Shanghai 200235 China; 2.Shanghai Construction Group Shanghai 200050 China) Abstract:In order to relieve the contradiction of nervous resources and environment and large energy consumption of residential building engineers should respond to the requirement of development and insist on industrial houses of energy-saving and structural integration as well as improve economy of industrial houses.Comparing with successful construction experiences of energy-saving industrial houses in Japan and Hong Kong in China set of technology system for construction of industrial houses of energy-saving and structural integration are researched to provide reference for the promotion of energy- saving industrial houses. Key words:energy-saving;precast;industrial bouse 当前,我国经济社会发展与资源环境的矛盾日化住宅建设道路,降低产业化住宅的建造成本,提高 益突出,严重制约社会可持续发展.我国已进入全 市场经济竞争力. 面建设“资源节约型,环境友好型”小康社会的新阶 在过去几年中,上海组织多家大型建筑施工企 段,城镇化进程明显加快,城镇住宅建设任务繁重. 业充分发挥集团优势,综合建筑设计、构件加工、结 由于经济增长方式粗放,导致能源供求矛盾更 构施工整条产业链上的力量,深入探索节能结构一 加突出:建筑能耗(包括建造能耗、...
施工技术 2016年6月上 102 CONSTRUCTION TECHNOLOGY 第45卷第11期 D0I:10.7672/8js2016110102 良态风作用下索膜结构风压特性现场实测研究* 李兆杨1,杨彬,张其林,钱基宏2 (1.同济大学土木工程学院,上海200092;2.中国建筑科学研究院,北京100013) [摘要]采用超声风速仪和风压传感器对良态风下的上海世博会世博轴索膜结构的风场及风压进行现场实测,对 结构所处风场特性及膜结构表面风压特性进行研究.研究结果表明:三方向脉动风速均基本符合高斯分布;湍流 度及阵风因子与平均风速基本符合对数型函数关系,随着平均风速的增大而减小;湍流积分尺度随平均风速的增 大而增大;实测风速谱低频段和中频段实测谱与Simiu谱较为接近;风压概率密度分布有一定的非高斯性;与顺风 向脉动风速功率谱相比,各测点脉动风压低频段功率谱密度相近,中频、高频段功率谱密度有一定差别;随着平均 风速的增大,风压系数的离散性逐渐减小,风速较小时风压系数偏大;得到352.4°风向角下风压系数与体型系数. [关键词]索网结构;现场实测;良态风;风场;风压特性 [中图分类号]TU399 [文献标识码]A [文章编号]1002-8498(2016)11-0102-06 Field Measurement Research on Wind Pressure Characteristics of a Cable-membrane Structure During Normal Wind Li Zhaoyang' Yang Bin' Zhang Qilin' Qian Jihong (1.College of Civil Engineering Tongii University Shanghai 200092 China; 2.China Academy of Building Research Beijing 100013 China) Abstract:Filed measurement of wind field and wind pressure of Expo Axis cable-membrane structure in Shanghai World Expo during normal wind was carried out by using ultrasonic anemometers and air pressure sensors.The wind characteristics around the structure and wind pressure characteristics on the surfaces of membrane structure were analyzed.It is shown that the probability density distribution of fluctuating wind follows a Gaussian distribution;turbulence intensity and gust factor follow a logarithmic relationship with mean wind speed and they decrease with the increase of mean wind speed;turbulence integral scale increases with the increase of mean wi...
[关键词]影胀土;支护;桩;旋喷搅拌加劲桩;监测;数值模拟 [中图分类号】TU443[文献标识码】A[文章编号]1002-8498(2017)01-0039-04 SafetyAnalysisof theStiffeningPileSupportinginExpansiveSoil Wang Mengxiang,Zhou Shengquan,Zong Qi (School of Civiland Architectural Engineering,Anhui Unisersity of Science & Technology,Huainan,Anhui 232001,China) Abstract:Based on the features of expanded soil in Huainan, in the case of a large deep foundation pile anchor was applied in the deep foundation excavation for the first time. In the main road near the foundation excavation, through these points of horizontal displacement and subsidence monitoring data analysis and processing, the result is used to analyze the stability of the foundation excavation supporting facilities of the building and its surrounding safety. The numerical simulation results and the measured results are consistent,that is to further demonstrates the validity of the research and analysis. Application in the engineering practice and analysis research prove the supporting technology that SMW pile with singleshaft rotaryjetmixing inclined pile anchorbined support technologyfeasibility and superiority of deep foundation excavation supporting in the region. Key words;expansive soil; supports; piles; mixing anchor pile; monitoring; simulations 0引言2)膨胀土具有很强的亲水性,钻孔扰动解除了 安徽淮南地区有着广泛的膨胀土",膨胀土是膨胀土膨胀力的约束,导致孔壁产生裂缝,吸水后, 一种吸水膨胀软化、失水收缩干裂的特殊土。
2011年1月 施工技术 第40卷第2期 CONSTRUCTION TECHNOLOGY 69 膨胀密封胶及全断面注浆管在地下 工程中的应用 贡浩平,李雄威2,钱红萍2 (1.常州市城多建设局,江苏常州213000:2.常州工学院土木建工程学院,江苏常州213002) [描要]对常州客运中心预留地铁房工程中施工缝的施工处理港施进种研究,介细了所链用的膨陈密刺胶和全 断面注菜管防水技术.工程完成后发现局部存在水现象,对洛水原因进行分析.同时指出对于多而地豆,地面 工环境的项目,以及工单位缺相应工管理经验的工程,应对实际工况调整途工方,设计中也可以 考感采用膨陈密封胶和止水钢板相传合的方法. [关键词]地下工程:施工健:膨旅密封腔:全断面注聚管:防术 [中图分类每]TU443 [立献标识福]A [支章编号]1002-8498(2011)02-0069-03 Application of Expansive Sealant and Full Face Injection Pipe in Underground Engineering Gong Haoping' Li Xiongwei Qian Hongping? (1.Urban and Rural Construction Bureau of Changzhou Changzhou Jiangsu 213000 China: 2.School of Civil Engineering Architecture Changzhou Institute of Technology Changzhou Jiangsu 213002 China) Abstract:The processing measures of construction joint are studied in underground engineering of Changzhou Passenger Center.The technology of expansive sealant and full face injection pipe are introdueed.When construction is pleted it is found that there are leakages in part of the joint and the causes are analyzed.The results show that the waterproof construction plan should be adjusted in the engineering such as high-rainfall area plicated subaerial construction environment and construction organizations which are inexperienced.It suggests that sealing steel doors bined with expansive sealant could be considered in design. Key words:underground engineering:construction joint:expansive sealant:full face injection pipe: waterproof 施工缝是结构面防水的薄弱环节,结构后浇带 本交主要针对膨密封胶及全断面注浆管在常 施工缝的...
施工技术 2016年10月上 70 CONSTRUCTION TECHNOLOGY 第45卷第19期 D0I:10.7672/5j52016190070 膨胀土锚索止浆塞施工工艺现场试验研究 马一霁1,王武刚2,姚智全2,左怀西2 (1.云南精诚更善拆除工程有限责任公司,云南昆明650000; 2.中国建筑科学研究院地基基础研究所,北京100013) [摘要]利用具有高膨胀率的膨胀土作为原材料,发明出一种膨胀土错索止浆塞.该止浆塞放置在锚索自由段和 错固段交界处和错索一起放入错孔中.通过现场试验得到注浆压力、注浆量和返浆/漏浆量之间的关系.结果表 明,水泥浆的注浆量得到了保证,错索承载力也得到了提高. [关键词]基坑:膨胀土;铺索:止浆塞;施工工艺;试验 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)19-0070-03 Experimental Study of Anchor Stopper Plug Construction Technique in Expansive Soil MaYj' Wang Wugang㎡,Yao Zhiquan2 Zuo Huaixi2 (1.Yunnan Sincere More Good Demolition Engineering Co.Lad.Kunming Yunnan 650000 China; 2.Institute of Foundation Engineering China Academy of Building Research Beijing 100013 China) Abstract:Using expansive soil as material the authors invent a stopper plug.The stopper plug was set with the anchor cable.According to the test the relationship of grouting pressure quantity and slurry quantity was obtained.The results show that the grouting quantity was ensured and anchor cable bearing capacity was improved. Key words:foundation excavation;expansive soil;anchor cable;stopper plug;construction;tests 0引言 发明出一种膨胀土错索止浆塞.这种膨胀土锚索 随着城市建设步伐的加快,基坑工程的发展愈止浆塞的特点就是充分发挥膨胀土遇水产生高膨 发迅速,同时也涌现了许多问题,如对深基坑采用 胀率的特点,将止浆塞放置在错索自由段和错固段 排桩错杆的支护形式时,预应力错索在设计和施 交界处,结合错索的成孔直径,将制作成的膨胀土 工中通常分成自由段和锚固段,错杆和土体之间的 锚索止浆塞和锚索缠绕在一起放人锚孔中,通过设 承载力是保证支护结构安全的先决条件,在一些软 置不同的注浆压力来获得注浆压力、注浆量和返 土地区及黏土和粉土分布较广的地区,由于一次注 浆/漏浆量之间的关系以检验膨胀土止浆塞的止浆 浆之后锚索的承载力较低,无法满足设计要求,为 效果,并在错索养护期后对其进行承载力极限抗拔 了提高错杆的承载力,往往采用二次或多次高压注 试验,以检验增加膨胀土锚索止浆塞后的...
施工技术 2017年7月上 110 CONSTRUCTION TECHNOLOGY 第46卷第13期 D0I:10.7672/8js2017130110 膨润土防水毯在深基坑工程中的应用 王瑾 (上海市基础工程集团有限公司,上海200002) [摘要]膨润土防水毯(GCL)作为一种新型土工合成材料,主要用于环境工程中的废弃物填埋场、地下水库、地下 基础设施建设等工程中,以解决密封、隔离、防渗等问题,防水效果好,抗破坏性强.结合深基坑工程实例,从结构 底板防水材料比选,施工技术、质量控制几个方面对覆膜钠基膨润土防水毯在基坑工程中的应用进行分析总结. [关键词]基坑;防水;软土地区;膨润土防水毯:施工技术;质量控制 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2017)13-0110-03 Application of Geosynthetic Clay Liner in Deep Foundation Excavation WANG Jin Shanghai Foundation Engineering Group Co.Lid.Shanghai 200002 China) Abstract:Geosynthetic clay liner GCL)as a new type of geosynthetic materials was mainly used for waste landfill site in environmental engineering and underground reservoir underground infrastructure construction projects in order to solve the problems of seal isolation seepage control its effect is good and has strong destructive.Based on deep foundation excavation engineering from the structure floor waterproof material alternatives construction technology quality control the effect of sodium base bentonite waterproof blanket application in the foundation excavation engineering was analyzed and summarized. Key words:foundation excavation;waterproof;soft soil;geosynthetic clay liner(GCL);construction; quality control 0引言 1工程概况 深基坑工程中,防水工程是一门涉及面广、实 北横通道是上海市内环内三横三纵“井”字形 用性强的工程.但在深基坑施工过程中却很容易通道的一部分,也是上海骨架性主干路网的重要组 被忽视,尤其是在大底板施工阶段,既要快速形成 成部分.采用地面、地下及少量高架的组合形式, 大底板,确保基坑稳定,又要兼顾好防水施工,避免 全长约19.1km. 后期结构渗漏.目前,建筑市场上的防水材料种类 北横通道新建工程I标中山公园工作井作为主 繁多,质量也参差不齐,不同的防水材料也对应了 线盾构过站井,位于长宁区中山公园内湖心...
2010年5月 施工技术 第39卷第5期 CONSTRUCTION TECHNOLOGY 膜结构技术研究和应用进展 张其林 (同济大学土木工程学院,上海200092) [滴要]介绍了近年来国内所开展的膜结构技术的研究内容和进展,包括各类膜结构材料性能的研究、膜结构计算 和设计方法的研究、膜结构体系的研究以及膜结构安全性监测系统的研究等,同时介绍了这些研究成果在实际工 程中的应用进展,提出了需要进一步研究的相关问题. [关键词]膜结构;材料性能;计算方法;安全检测 [中图分类号]TU38 [文献标识码]A [文章编号]1002-8498(2010)05-0001-05 Research and Application Progress on Membrane Structure Techniques Zhang Qilin College of Civil Engineering Tongji Unisersity Shanghai 200092 China) Abstract:In this paper the research progress on the membrane structure techniques in China in recent years is introduced including the mechanics properties of different kinds of membrane material the putation and design methods for membrane structures the structural systems and the safety monitoring system on membrane structures.The applications of the research results on real engineering projeets of membrane structures are also illustrated.Finally some problems which need to be further investigated are presented. Key words:membrane structure mechanics property putation method;safety monitoring 0前言 膜结构在国内的应用晚于国外近50年,但近十几 年来,膜结构在国内的应用发展速度高于世界任何地 区.目前,膜结构已广泛应用子大型体育场馆、展览中 心、航空和铁路交通、文化娱乐等公共建筑中,雕塑、小 依经验制作的构小品 依境外提术建成的大型体育涵服屋面 品等小型临时建筑也在公共绿地和公园中极为普及. 广泛的工程实践也在不断地推动膜结构技术的研 图120世纪90年代建成的国内早期膜结构 Fig.1 Membrane structures bullt in 1990s in China 究和应用.图1a所示的上海中央绿地膜结构是20世纪 90年代初的早期小品,依靠裁缝师傅的经验制作完成; 图1b所示的20世纪90年代中期建成的上海八万人体 育场膜屋面是国内最早采用PTFE膜材建成的大型膜结 构建筑,完全依靠境外技术.图2所示的上海世博会世 博轴膜屋面是现今规模尺度最大的膜建筑,主要依靠国 内研究成果和技术建造.这三个工程充分反应了十几 图2上海世博会世博轴结构 年以来国内膜结构技术的研究和应用情况....
施工技术 2010年3月 34 CONSTRUCTION TECHNOLOGY 第39卷第3期 脚手架的倾覆与稳定计算 施炳华 (中国建筑科学研究院,北京100013) [摘要】当模板支架、施工用操作架等脚手架不设连墙杆时,必须首先对脚手架进行抗倾覆验算,然后才是强度、刚 度和稳定性计算.而现行的国家标准中没有倾覆验算和稳定性验算内容.根据国家有关标准导出了脚手架倾覆 验算公式,并有2个算例辅以说明.最后指出脚手架高宽比与脚手架的倾覆有关,与脚手架稳定性承载能力无关. [关键词]脚手架;倾覆;稳定性;验算 [中图分类号]TU731.2 [文献标识码]A [文章编号]1002-8498(2010)03-0034-03 Calculation on Overturn and Stable of Scaffolding Shi Binghua China Academy of Building Research Beijing 100013 China) Abstract:When some scaffoldings of formwork support and construction handling frame have no connect wall bars it must firstly check to calculate overturn of scaffolding and then calculate strength rigid and stable.But the present national standards and codes have no related checking calculation contents on overturn and stable of scaffolding.In this article the author derives overturn calculation formula on scaffolding on the basis of these standards and provides two examples.The author also discusses that width of scaffolding is related to overturn of seaffolding and unrelated to stable of scaffolding. Key words:scaffolding:overturn;stability;checking calculation 结构设计中,“倾覆”与“稳定”这两个含义是不相墙杆,则脚手架的倾覆验算在这两本规范中就成为不 同的,设计时都应考虑.《建筑结构可靠度设计统一标可缺少的内容了.所以,对于模板支架、施工用的操作 准》GB50068-2001第3.0.2条第一款规定承载能力极架等无连墙杆的脚手架,首先应保证脚手架不倾覆而 限状态包括:“①整个结构或结构的一部分作为刚体失进行倾覆验算,然后才是强度、刚度和稳定性计算.如 去平衡(如倾覆等).④结构或结构构件丧失稳果需要,还可进行正常使用极限状态计算. 定(如压屈等)”.可见它们同属于承载能力极限状1脚手架的倾覆验算 态,但应分别考虑.《建筑结构设计术语和符号标准》1.1通用的验算公式推导 GB/T50083-97 对“倾覆”和“稳定”分别作出了定义, 无连墙杆的脚手架,作为一个刚体应按如下表达 并称“倾覆验算”和“稳定计算”.《建筑地基基础设计 式进行倾...