[关键词]项目管理;国际工程;风险管理;可拓理论;层次分析法 【中图分类号】TU71【文献标识码】A[文章编号】1002-8498(2015)06-0075-05 Empirical Research on International Project Risk Management Based on Extension Theory TangXiaoling',ZhangYifei',ZhangKai² (1.Management School,Xi'an University of Architecture and Technology,Xi'an,Shaanxi 710043,China; 2.CCCC Second Highway Engineering Co.,Ltd.,Xi'an,Shaanxi 710055,China) Abstract:Combining with the international engineering contracting high risk, plicated management, broad characteristics,using extension theory and analytic hierarchy process, the specific engineering project has established aset of riskmanagement of international engineering contracting enterprises as the main body of evaluation on the factors of the evaluation index system and the extension model. In order to help the contractor to take specific measures to reduce the risk of loss and improve the level of enterprise risk management, by calculating the relative weight of each index and evaluation grade correlation, the appraisal of the project specific risk is carried,and the risk levelof the intemational project isrefected. Key words: project management;international engineering;risk management; extension theory;analytic hierarchy process 0引言础上,提出了承包商主观风险应对措施”。
【关键词]高层建筑;整体钢平台:模架体系;动力特性;优化;设计;分析 [中图分类号]TU311.3[文献标识码】A[文章编号]1002-8498(2015)08-0025-05 OptimumDesignofIntegralSteelPlatformSystem BasedonDynamicCharacteristics Zhao Chuankai,YangZhenyu,GaoYuan (Schoolof CivilEngineering,TongjiUnivesty,Shanghai200092,China) Abstract:Through the method of establishing finite element model,dynamic characteristics of integral steel platform system used in the core tube construction of Shanghai Tower is studied.The results show that the first vibration type of integral steel platform system with rectangular cross section is torsion.
system.While the methods of both setting cross braces on the surface of external scaffoldings and connecting external scaffoldings with the formworks of core tube can limit the torsion vibration mode appears in the first vibration type effectively.Thus it is suggested that the bination reinforcement method should be adopted to improve the design of theintegral steel platform system. Key words:tall buildings;integral steel platform system (ISPS);formwork and scaffold;dynamic characteristics;optimization; design;analysis
0引言架体系,该体系由钢平台系统、内外挂脚手架系统、 正在建设中的上海中心大厦,建成后高度将达支撑系统、液压动力及电气控制系统和大模板系统 到632m,将与金茂大厦和上海环球金融中心一起,共5部分组成,龚剑等从宏观上对其工作机理做了 组成上海的标志性建筑群。
2012年11月下 施工技术 第41卷第377期 CONSTRUCTION TECHNOLOGY 87 基于信息化技术的可视化项目管理系统研究 陆建飞,姚晓东,虞莉丽 (中天建设集团有限公司,浙江杭州320000) [摘要]为实现可视化项目管理系统的开发,从全周期项目管理和信息化技术实现方法的角度出发,提出理论模 型、功能定位及功能设计,为后续可视研究工作提供借鉴.介绍了模型化的管理过程,以及3种实现可视化的技术 途径,以及最终要达到的功能目标. [关键词]信息化;项目管理;可视化;理论模型 [中图分类号]TU717 [文献标识码]A [文章编号]1002-8498(2012)22-0087-03 Research on Visual Project Management Based on Information Technology Lu Jianfei Yao Xiaodong Yu Lili (Zhongtian Construction Group Co. Lid.Hangahou Zhejiang 320000 China) Abstract:From the aspect of full cycle project management and information technology implementation method this paper put forward the theoretical model function orientation and function design for the visual project management system which gave references to subsequent research work.The management process of modeling and three technique routes to achieve the visualization are introduced.The theoretical model of visual project management is proposed and the ultimate functional objectives are defined. Key words:information;project management;visual;theoretical model 可视化项目管理是以可视化项目管理理念为验等.对于项目管理领域而言,没有充分的利用项 理论基础、应用多种动态可视化技术实现方法、遵目管理和技术应用的问题最普遍,同时也影响最 循一定的行业及企业标准来实现的一种应用于建 大,而运用模型化的项目管理方法可以较好地解决 筑行业项目管理领域的动态的可视的信息资源分 这些问题.利用模型来描述一个定义良好的项目 享模式及项目管理方法.目前国内外对“可视化项 管理过程,可使得如下的工作变得相对容易. 目管理”的概念尚未清晰,很多文献将此列入项目 1)向企业个体团队传达如何管理项目,使 管理未来的发展方向,笔者认为可视化项目管理理 团队成员对项目管理过程有清晰直观的认识,更好 念强调的是过程的可视化,是一种动态的概念,需 地培养项目成员的工作默契,提高团队凝聚力. 要对项目全过程的信息进行集成,并运用可视化技 2)利用模型化的优秀项目管理方法,更好地与 术表达动态概念的技术和方法来实现信息化技术 项目团队其他成员就项目状况和进展进行沟通,并 层面与项目管理层面...
2016年7月上 施工技术 第45卷第13期 CONSTRUCTION TECHNOLOGY 125 D0I:10.7672/5j52016130125 基于SPSS的岩溶隧道围岩变形规律研究* 王思淼,邓洪亮 (北京工业大学建筑工程学院,北京100124) [摘要]采用数理统计理论,以沪昆客专高家屯隧道监控量测结果进行分析.结果表明,隧道净空收敛和棋顶沉降 与围岩级别、时间因素和施工因素等呈正相关,并与隧道围岩级别相关性最好,研究结果可作为石灰岩地区岩溶隧 道施工方法和支护方案选择的重要参考依据,对确定合理的隧道二次衬砌时间具有重要的应用价值. [关键词]隧道;岩溶隧道;净空收敛;回归分析;变形 [中图分类号]TU198 [文献标识码]A [文章编号]1002-8498(2016)13-0125-05 Study on Deformation Law of Surrounding Rock of Karst Tunnel Based on SPSS Wang Simiao Deng Hongliang (College of Architecture and Civil Engineering Beijing University of Technology Beijing 100124 China) Abstract:This paper used the theory of mathematical statistics to analyze the monitoring and measuring results of some tunnel.The results showed that tunnel clearance convergence and crown settlement were positively correlated with rock level the time factor and construction factors and had the best correlation with the tunnel surrounding rock classification.The research results can be used as an important reference for the construction method and the selection of the supporting scheme in the limestone area which has important application value for determining the time of the second lining of the tunnel. Key words:tunnels;karst tunnel;clearance convergence;regression analysis;deformation 0引言 统计理论研究石灰岩地区岩溶隧道围岩的变形规 我国境内分布的岩溶给铁路隧道建设带来诸律,为确定隧道施工方法和合理的支护方案提供科 多困难,严重影响了我国高速铁路的发展.可溶性 学依据. 岩在地表和地下水的作用下形成许多溶腔、溶洞、1研究现状 地下暗河.溶洞中常含有大量地下水和泥砂,有些 随着新奥法在隧道设计和施工中的广泛应用, 甚至为高压岩溶水(泥).隧道穿越岩溶区域时,易 监控量测所处的地位越来越重要,并被列为隧道施 发生突水、突泥事故,严重地影响了施工进度和工 工的关...
[关键词]项目管理;安全管理;总承包;研究 [中图分类号]TU714 [文献标识码】A [文章编号】1002-8498(2016)12-0107-03 Construction Engineering Safety Management MethodBasedonRFIDMethod Liu Hongbo',Liu Jie² (1.Schoolof CivilEngineering,Zhengzhou Institute ofAeronautical Industry Management, Zhengzhou,He'nan 450015,China;2.Collborative Inovation Center of Airport Economy Development,Zhengzhou,He'nan 450015,China) Abstract:Taking an accident as background,the problems of cross layers of subcontracting work safety in general contracting mode are analyzed.Because of inaccurate information and do not achieving the information timely,general contractor and subcontractors through traditional methods cannot be a good safetymanagement and discovery and control the problems.In view of the information collection and transmission capabilities of RFID technology, this paper presents an RFID general contractor and subcontractors for construction projects based on safety management and discusses the method of how to achieve real-time monitoring building construction process and resolve layers of subcontracting and cross job problem. Key words:project management;safety management; general contractor;research 近年来项目总承包模式成为我国建筑工程项源,最终导致事故的发生。
施工技术 2014年8月上 90 CONSTRUCTION TECHNOLOGY 第43卷第15期 D01:10.7672/sgjs2014150090 基于LPS的精益建造项目计划管理和控制* 邓斌,叶青 (华侨大学土木工程学院,福建厦门361021) [摘要]阐述了精益建造的一个重要工具——最后计划者体系(LPS)的理论基础,分析了传统项目计划管理和控制 的缺陷,探讨了改进的方法,并结合案例分析了LPS在工程项目计划管理和控制方面的优势.实证表明LPS的运 用使得项目的工作流更加稳定,通过滚动性的前瞻性计划、周生产计划等的实施、PPC值的检验、滞后原因分析及 机制,大大提升了项目的生产效率及稳定性,达到了预期效果. [关键词]项目管理:精益建造;计划管理:最后计划者体系 [中图分类号]TU722 [文献标识码]A [文章编号]1002-8498(2014)15-0090-04 The Lean Construction Program Management and Control Based on LPS Deng Bin Ye Qing College of Civil Engineering Huaqiao University Xiamen Fujian 361021 China) Abstract:This paper elaborates the theoretical foundation of LPS which is one of the important tools of the lean construction.It also analyzes the defect of traditional programs management and control discusses the improved method and researches the advantages of LPS in project management and control through a case.The empirical evidence shows that the use of LPS making the workflow of the program more stable.It greatly enhances the production efficiency and stability and finally achieved the expected results by implementing the rolling forward plan and week production schedule testing the oute of PPC analyzing the reason of the lag and the feedback mechanism. Key words:project management;lean construction;plan management;last planner system(LPS) 同制造业与工业相比,建筑业生产效率低下,1.1传统计划的缺陷 浪费严重.1992年,Koskela1分析了建筑业的自身 传统工程项目生产计划通常采用“推动式”模 特点,并第一次提到将精益的思想引入建筑业中.式:即项目负责人根据项目目标和资源约束等,由 Ballard2全面、系统地提出和阐述了精益建造的一 上而下地安排施工进度计划.然后工人对上层的 个重要管理工具...
施工技术 2015年9月下 90 CONSTRUCTION TECHNOLOGY 第44卷第18期 D01:10.7672/sjs2015180090 基于ITP现场质量管理新方法的创建与实践 王继华,裴正广 (中海油基建管理有限责任公司,北京100010) [摘要]为解决建筑工程现场质量管理计划粗放控制薄弱、系统性和规范性缺乏、管理者难于全面了解重点把控等 问题,基于P构建了现场质量控制管理的新方法,并在多个大型建筑工程建设中投入运用.新方法突出了过程 控制,计划与执行情况一目了然,管理精细、系统和规范,达成的效果较为明显. [关键词]项目管理:现场管理;ITP;质量管理 [中图分类号]TU71 [文献标识码]A [文章编号]1002-8498(2015)18-0090-04 Creating and Practice of Quality Management New Method Based on ITP Wang Jihua Pei Zhengguang CNOOC Construction Management Co.Ltd.Beijing 100010 China) Abstract:Quality management new method is established based on ITP to solve the problems of poor control low system bad criterion and manager lopsided control of quality management plan and the method is applied in some large buildings construction.The new method is focused on the process control it is elaborate systemic and normative and the effect is obvious. Key words:project management;site management;inspection and test plan;quality management 检查和试验计划(inspection and test plan ITP)1.2ITP管理的优势 是用以指导和控制施工过程和质量的文件.计划 核电工程质量控制计划ITP克服了上述质量管 要求按照规定的格式编制,对特定的工作范围规定理方式的不足,比较好地解决了现场难以精细管 专门的先决条件、活动顺序、质量措施、验收标准和 理、系统管理和规范管理的难题.核电工程ITP管 资源,过程中须将检查和试验结果予以记录保留, 理突出过程控制,要求施工前对工艺文件、人员资 并需签字确认.ITP管理在国际工程中普遍采用, 质和原材料等进行检查确认,施工过程中各方对控 国内很多重要工程项目和一些造船、装备制造企业 制点验证消点,施工完毕后共同检查确认,大大增 也采用这种质量管理模式,但国内建筑行业应用还 强了计划的执行力.IP既是计划文件,也是执行 不广泛. 文件,系统性强,层次清晰,反映情况全面.将核电 1ITP管理与国内工程管理模式的比较 工程ITP管理思路移植到建筑行业,根据建筑工程 1.1国内工程管理模式的弊端 的特点,结合现有质量体系和管理方法,对工程切 目前,在建筑行业乃至整个工程建设领域,各 分方法、ITP的编制与执行以及支持ITP运行的制 个参建单位的质量管理都是通过建立和运行质量 度...
[关键词]风洞;点云模型;Hough变换;系统聚类分析法;直线识别 [中图分类号】TU17;TU755[文献标识码]A[文章编号]1002-8498(2015)23-0131-04 RecognitionAlgorithmofWindTunnel ContourBasedonHough Transform andHierarchical ClusterMethod Xu Zhongchao (The 63926 Troop of Chinese People's Liberation Army,Beijing100192,China) Abstract:5.5m x 4m wind tunnel is a key national project , the wind-tunnel-inner surface has high precision and building difficulty. This paper puts forward a recognition algorithm based on Hough transform and hierarchical cluster method to identify the polygonal contour of wind tunnel, then,fits the line with least square method.The test simulation and engineering practice shows that the method can effectively identify and fit the contour of the polygonal section of wind tunnel with large size and plicatedcrosssection. Key words:wind tunnels;point cloud model;Hough transform;hierarchical cluster method;line identification 0引言科技建设项目,项目总投资3.711亿元,总建筑面积 风洞建设中的内型面精度检测是整个风洞洞19595m²。
[关键词】基坑;施工;沉降;三次样条插值法;遗传算法;预测;研究 [中图分类号】TU472.1[文献标识码】A[文章编号】1002-8498(2017)08-0016-04 ResearchonTimeSeriesPredictionofFoundationExcavation ConstructionLandSettlementBasedontheGA-SVM SHI Xiangfeng',WANG Lifen²,SHEN Yang',LIU Jun'e’,GUOZhanglin' (1.Department of Civil Engineering,North China Institute of Science and Technology, Beijing 101601,China; 2. School of Economics Management and Business,Hebei University of Engineering,Handan,Hebei 056038,China;3. Beijing Wuzi University,School of Information,Beijing101149,China) Abstract;Physical land settlement caused by foundation excavation construction has different factors, ground settlement data is highly nonlinear,so high precision ground settement prediction has certain difficulty. This paper processes the observed data by using the cubic spline interpolation method. The genetic algorithm (GA) is used to find the optimal parameters of support vector machine (SVM) and GA - SVM time series prediction model is established,and these methods which are put in the foundation model of a subway station foundation excavation engineering in Guangzhou is used to predict the ground settlement data,which is pared with the measured values and other prediction methods,this model has obvious superiority,which has great significance for the improvement of safety construction of foundation excavation. Key words;foundations;construction; setlement; cubic spline interpolation method;genetic algorithm; forecast;research 0引言其重要。
2012年8月下 施工技术 第41卷第371期 CONSTRUCTION TECHNOLOGY 37 基于ERP系统的施工企业信息资源开发与利用 胡翔宇,陆建飞,徐新锋 (中天建设集团有限公司,浙江杭州320000) [摘要]针对建筑行业目前的信息资源管理现状,结合A公司的信息资源价值开发新模式,对施工企业信息资源开 发利用进行了研究与阐述,总结了信息资源开发与ERP系统结合的关键要点.结合试点项目提出可视化技术辅助 施工管理将是信息资源潜在价值开发的良好途径,并提出基于视频子系统的项目管理辅助措施,取得良好效果. [关键词]信息化;信息资源;ERP系统;视频子系统;可视化 [中图分类号]TU717 [文献标识码]A [文章编号]1002-8498(2012)16-0037-03 Development and Utilization of Information Resources of the Construction Enterprise Based on ERP System Hu Xiangyu Lu Jianfei Xu Xinfeng (Zhongtian Construction Group Co.Ltd.Hangzhou Zhejiang 320000 China ) Abstract:Considering the present situation about information resources management in the construction industry a study was performed on the development and utilization of information resources of the contractors with pany A as a typical case study.The key points of bining information resources development and ERP system are summarized.It was found by the study that auxiliary construction management with visualization technology was a good way to develop the potential value of information resources.And an auxiliary construction management system was developed based on video subsystem. Its application in pilot projects has been proved to be effective. Key words:information management;information resources;ERP system;video subsystem;visualization 企业信息资源的开发与利用是信息化技术发在其原有的平台上开发符合自身发展特点的功能 展到一定阶段的必然产物,也是项目管理转型升级子系统.A公司的视频子系统就是在ERP系统上 需要做的一项重要工作.在国外,工程管理研究人自主研制开发而成的,并成功应用于项目管理实 员在早些年就已经开始致力于施工企业信息资源践.本文就A公司视频子系统的开发和应用进行 的整合、开发与利用,其目的之一...
施工技术 2014年6月上 80 CONSTRUCTION TECHNOLOGY 第43卷第11期 D01:10.7672/js2014110080 基于BP神经网络和R/S分析的隧道仰坡 沉降变形预报预测* 罗林,左昌群,赵连,唐霞 (中国地质大学(武汉)工程学院,湖北武汉430074) [摘要]隧道洞口处多为软弱岩或浮土,稳定性差,地表位移监测成为判断洞口稳定性的重要手段,因此仰坡沉降 变形预测显得格外重要.鉴于仰坡沉降变形具有很强的非线性特征,选取P神经网络对仰坡的沉降变形进行预 测,并验证其可行性,进而利用BP神经网络扩大沉降变形监测的样本.在此基础上,再利用R/S分析对新的监测 样本进行重标极差分析,分别得到隧道仰坡沉降-时间序列和变形速率-时间序列的Hust指数,并结合两项指数确 定了隧道仰坡沉降变形的趋势,为判断仰坡的稳定性及治理提供了有力依据. [关键词]隧道工程;仰坡;BP神经网络;R/S分析;沉降;预测 [中图分类号]U456.31 [文献标识码]A [文章编号]1002-8498(2014)11-0080-05 Settlement Deformation Prediction of the Front Slope in Tunnel Based on the BP Neural Network and R/S Analysis Luo Lin Zuo Changqun Zhao Lian Tang Xia Faculty of Engineering China University of Geasciences Wuhan Hubei 430074 China) Abstract:There are much weak weathered rockmass and topsoil in tunnel slope its'poor stability makes settlement monitoring much more important to decide the stability of tunnel entrance.Therefore the settlement deformation prediction in tunnel slope is necessary.In view of strong non-linear characteristics of the slope settlement deformation this paper selects BP neural network to predict deformation of the slope and verifies the feasibility and then uses the BP neural network to expand the sample of settlement monitoring.Based on the above the new monitoring samples are analyzed by R/S analysis and Hurst index of settlement-time sequence and deformation rate-time series of the overlaying slope is achieved. Then the two Hurst indexes are bined to determine settlement deformation t...
2016年7月下 施工技术 第45卷第14期 CONSTRUCTION TECHNOLOGY 51 D0I:10.7672/8js2016140051 国家天文台500m口径天文望远镜索网安装施工* 朱万旭1,李长乐1,张国强2,韦福堂2 (1.桂林理工大学土木与建筑工程学院广西岩土力学与工程重点实验室,广西桂林541004: 2.柳州欧维姆工程有限公司,广西柳州545005) [摘要]国家天文台FAST工程索网结构是主动反射面的支撑结构,是实现反射面主动变位的关键点,制作安装工 艺要求极其严格.其共包括2225个主索节点、6670根主索和2225根下拉索,总重约1300.索网主索索长误差 要求控制在±1mm以内,达到索长的0.1%c精度要求,且处于无应力长度安装.由于地形条件复杂,安装工作 均在空中完成.为此,研制了能够高斜度爬升的挂篮等专用的施工装备.根据工程实际情况,索网安装按对称轴 划分为51个区域,中心区为索网中心80m范围,先行利用支撑胎架独立安装索网;然后周边5个主区同时同步 对称在空中施工.其中,施工通道为固定索道,承受较大荷载,施工索道则随安装进度不断转移.主索安装完毕 后,通过边缘150根拉索调整以及张拉下拉索,调整索网成型.索网安装从2014年4月15日开始,至2015年2月 5日结束,工程质量符合设计及规范要求,保证了500m口径天文望远镜安全、便捷、快速有效的安装. [关键词]FAST;天文望远镜;索网:空中安装;施工通道;施工索道;节点 [中图分类号]TU758.11[文献标识码]A[文章编号]1002-8498(2016)14-0051-03 The Installation of 500m Diameter Astronomical Telescope Cable Network for National Astronomical Observatories Zhu Wanxu 'Li Changle 'Zhang Guoqiang 2 Wei Futang 2 (1.Key Laboratory of Geotechnical Mechanics and Engineering Civil Engineering College of Guilin University of Technology Guilin Guangxi 541004 China;2.Liuzhou OVM Engineering Co.Lid.Liuzhou Guangxi 545005 China) Abstract:The cable nets of the National Observatory FAST engineering is the braced structures of active cable-mesh reflector and the key points of active reflector initiative deflections.The production and installation process are very strict.The cable net installation of the National Observatory FAST engineering includes 2 225 main cable joints 6 670 main cables and 2 225 lower tensile cables which totally weight about...
[关键词】既有建筑;指标权重;绿色评价 [中图分类号】TU201.5 [文献标识码]A [文章编号]1002-8498(2014)10-0014-04 AStudyontheWeightofIndicatorsofForeignTypicalGreen Assessment Systems for Existing Building Zhu Rongxin'', Wang Qingqin²", Li Nan’ (1.Chongqing Uiersity,FacultyfUrbanConstructionandEnironmenEngineering,Chongqing4045,China; 2.China Academy of Building Research,Bejing 100013,China;3. Bejing Intemational Collaboration Base on Green Building,Beijing 100013,China) Abstract;In the world,BREEAM Offices 2008, Green Star-Office Existing Building and LEED 2009 for Existing Buildings:Operations & Maintenance are typical green assessment tools,which can be used to assess operation and retrofit of the existing building.A parison research is launched on five fields, indoor environmental quality,energy,material and resources,water and integrated management, to analyze the similarities and differences of the three tools, so as to provide the basic research to optimize operation,retrofit and assessment of Chinese existing building. Key words:existing building;indicators weight; green assessment 0引言 筑等板块,为既有建筑的改造提供技术支持[2]。
2010年11月 施工技术 第39卷第11期 CONSTRUCTION TECHNOLOGY 25 国内既有建筑改造结构与功能材料的 应用及发展 张小冬,黄莹 (中国建筑科学研究院,北京100013) [摘要]目前,我国已进入既有建筑加固改造的高峰期,既有建筑改造结构与功能材料是既有建筑改造的物质基 础,其性能是既有建筑改造质量能否得到保证的必要前提.当前,我国的技术水平为:①建筑结构胶起步较晚,发 展较快,产品质量参差不齐;②推进纤维复合材料国产化,提高材料质量以降低成本;③聚合物砂浆的应用前景好; ④钢筋阻锈剂的研究有明显进展,法律法规日趋完善.为适应经济建设的可持续发展,我国应对以下方面进行研 究:①高性能胶种的开发;②混杂纤维复合材料的发展与推广;③耐火型既有建筑改造结构与功能材料的研究. [关键词]既有建筑;结构与功能材料;加固;研究 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2010)11-0025-05 Application of Structure and Functional Materials Used in Existing Building Renovation in China and Its Development Zhang Xiaodong Huang Ying (China Academy of Building Research Beijing 100013 China) Abstract:China has entered the period of frequent occurrence for the existing building renovation. Structure and functional materials are the main performance for existing building renovation which can assure its quality.Currently our country's technical level has several features:①The application of building glue is relatively late develops relatively quick and its quality is irregularity;②promoting fiber posites material domestically produced to improve material quality and decrease cost;③good application prospect for polymer mortar;④study on reinforcing bar rusty retardant agent makes a great progress.To meet the need of sustainable development on economic construction some works must be done such as development of high performance glues development and popularization on hybrid fiber reinforced polymer and study on refractory type structure and fun...
施工技术 2013年7月上 30 CONSTRUCTION TECHNOLOGY 第42卷第13期 D0I:10.7672/sgjs2013130030 国产冷弯钢板桩在长江某围堰工程中的应用 顾明如 (江苏省水利建设工程有限公司,江苏扬州225000) [摘要]国内建设市场对钢板桩的需求日益加大,而传统的热轧钢板桩制作成本高,难度大,国内没有成熟的生产 线,依赖进口.一种全新的国产冷弯钢板桩在诸多工程中得到良好应用,其具有制作成本低、可任意定尺长度、可 优化截面、生产快捷方便、规格丰富等优点,逐步成为热轧钢板桩的替代品.某围堰工程大量使用国产冷弯钢板 桩,通过针对性的技术措施和施工细节的控制,工程安全度过汛期,国产冷弯钢板桩得到良好的应用,并具有重要 的推广价值. [关键词]围堰;钢板桩;加工;控制要点;施工技术 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2013)13-0030-03 Application of Domestic Cold-formed Steel Sheet Piles in Cofferdam Construction in Yangtze River Gu Mingru Jiangsu Hydraulic Engineering Construction Co..Ltd.Yangzhou Jiangsu 225000 China) Abstract:The demand of steel sheet piles is increasing continuously in the domestic construction market. With few matured production line available locally most of the hot rolled sheet piles are imported due to the traditional way of production which is expensive and plicated.A kind of new cold-formed steel sheet piles developed domestically has been applied in many projects.It costs less and could be produced at the request of the customer for any specified lengths and optimized sections.The production process is paratively simple and various specifications are available.It bees the substitute of the hot rolled steel sheet piles.Plenty of domestic cold-formed steel sheet piles were applied in a certain cofferdam project.With adequate technical measures and careful controls during construction the cofferdam functioned reliably and successfully got through the flood seaso...
2017年6月上 施工技术 第46卷第11期 CONSTRUCTION TECHNOLOGY 43 D0I:10.7672/5j52017110043 固化粉土底基层力学特性分析* 张孝彬,朱志铎,谭敏 (东南大学岩土工程研究所,江苏南京210096) [摘要]选择石灰粉煤灰、石灰粉煤灰水泥、石灰水泥、SEU-2型固化剂4种外掺剂,对粉土进行固化以作 为公路底基层.使用BISAR程序建立路面结构的计算模型,计算在车辆荷载作用下固化粉土底基层的拉应力和拉 应变,通过弯拉应力验算,检验固化粉土底基层的抗拉强度是否满足要求,并且比较4种外掺剂的固化效果.研究 结果表明,底基层的厚度和抗压回弹模量对底基层的力学特性有较大影响,固化粉土底基层结构的优化参数为厚 度15cm 抗压回弹模量1100MPa:固化粉土底基层的抗拉强度满足设计要求,且SEU-2型固化剂的固化效果优于 其他3种外掺剂. [关键词]公路工程;底基层;力学特性:粉土;外掺剂 [中图分类号]U416.2 [文献标识码]A [文章编号]1002-8498(2017)11-0043-04 Analysis of Mechanical Properties of Cured Silt Subbase ZHANG Xiaobin.ZHU Zhiduo.TAN Min (Institute of Geotechnical Engineering Southeast University Nanjing Jiangsu 210096 China) Abstract:In this study four kinds of additional agents:lime fly ash fly ash lime cement lime cement and SEU-2 curing agent were selected for curing silt as road subbase.Using BISAR putational model of pavement was established to obtain tensile stress and tensile strain of cured silt subbase under vehicle load.Then tensile stress was checked to see if the tensile strength of cured silt subbase met the requirements and curing effect of the additional agents was pared.The results show that thickness and pressive resilient modulus have a great influence on the mechanical properties of subbase and optimized parameters of cured silt subbase are obtained:thickness 15cm pressive resilient modulus 1 100MPa;tensile strength of cured silt subbase can meet design requirements and curing effect of SEU-2 curing agent is better t...
2012年12月下 施工技术 第41卷第379期 CONSTRUCTION TECHNOLOGY 49 固体体积率法在高填方地基加固效果检测中的应用 郭伟林,安明 (山西省机械施工公司,山西太原030009) [摘要]介绍了固体体积率法确定标准干密度的原理与计算方法,并用工程实例介绍固体体积率法在高填方地基 加固效果检测中的应用.述了固体体积率法在高填方地基中推广应用的实际意义.固体体积率法是对块碎石 类高填方地基检测手段的一种补充,其有一定的局限性,对骨料级配有严格要求的工程要注意. [关键词]地基处理;加固;固体体积率;高填方 [中图分类号]TU753.8 [文献标识码]A [文章编号]1002-8498(2012)24-0049-03 Application of Solid Volume Ratio Method in Reinforcement Effect Detection of High Soil-filled Foundation Guo Weilin An Ming (Shanxi Machinery Construction Company Taiyuan Shanxi 030009 China) Abstract:This paper introduces theory and calculation method of determining the standard dry density by solid volume ratio and also introduces its application in reinforcement effect detection of high soil-filled foundation with real projects examples.The method has practical significance in high soil-filled foundation detection.It is also a supplement method for high stone-filled foundation detection.But it has its limitations and should be cautious when applied to projects with strict requirement on aggregate gradation. Key words:foundation treatment;reinforcement;percentage of solid volume;high soil-filled 目前,我国的基本建设规模空前庞大,由于建成难以达到要求的勘探深度.瑞利波法勘测时便 筑用地紧张,搬山填沟、填海造地已成为解决建筑利易行且深度不受限制,但只能定性、较难定量. 用地的重要途径.土石方填方数量在百万m以开挖探槽直接观测,增加一些感性认识,但无法提 上,最大填方高度几十米的项目不在少数,由于填 供直接的检测数据.针对目前大量出现的开山岩 方量大,挖方量也大,填土的成分也十分复杂.往 块填方地基,介绍一种在我国水利行业、公路行业 往是细粒土、碎石土、强风化、中风化等不同粒径的 中应用的固体体积率法. 混合.同时,由于强夯处理大块石填方地基施工技 1固体体积率法简介 术的推广,填方材料中的最大粒径可达800mm.在 在我国水工行业,应用孔隙率作为堆石的填筑 这样的情况下,填土的夯实标准如仍采用《建筑地 质量的控制指...
施工技术 2015年12月下 14 CONSTRUCTION TECHNOLOGY 第44卷第24期 D0I:10.7672/sgjs2015240014 哈尔滨万达茂滑雪乐园东区钢结构临时支撑系统 设计及卸载分析 吴文平,杨文侠,丁剑强,蔡蕾,刘远帆,杨志明 (江苏沪宁钢机股份有限公司,江苏宜兴214231) [摘要]哈尔滨万达茂滑雪乐园东区钢结构为东、中、西区3个分区中最高、最大的部分,其中钢结构的安装及临时 支撑系统设计最为复杂.主要对临时支撑的设计、布置、稳定控制等关键技术作详细阐述,同时采用有限元软件对 支撑系统卸载过程进行模拟分析并与卸载监测值比较.结果表明:钢结构临时支撑系统设计及布置合理,各卸载 监测点的实测值均处于理论及规范允许范围内. [关键词]钢结构;临时支撑;卸载;模拟;监测 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2015)24-0014-04 Design and Unloading Analysis of Temporary Support System for Steel Structure in Eastern District of Harbin Wanda Mall Skiing Paradise Wu Wenping Yang Wenxia Ding Jianqiang Cai Lei Liu Yuanfan Yang Zhiming Jiangsu Huning Steel Mechanism Co.Ltd.Yixing Jiangsu 214231 China) Abstract:The steel structure of Harbin Wanda Mall Skiing Paradise is divided into east middle and west area.The eastern steel structure is the highest and the largest area of the three partitions.The installation of steel structure and the design of temporary support system are also the most plex.Mainly to the temporary support of the design layout stability control and other key technologies are deseribed in detail.At the same time the finite element software is used to simulate and analyze the unloading process of the supporting system and pare with the unloading monitoring values.The results show that the temporary support system for steel structure design and layout is reasonable the measured values of the unloading monitoring points are in the range of theory and specification. Key words:steel...