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...
2016年11月下 施工技术 第45卷第22期 CONSTRUCTION TECHNOLOGY 77 D0I:10.7672/5j52016220077 后锚固连接中免清孔施工技术的研发与应用 陈家晖 (喜利得中国商贸有限公司,上海200032) [摘要]后错固安装过程的清孔步骤是影响化学错栓承载力的关键因素.本文对免清孔施工技术的产品组合,受 力原理和抗震测试要求,对其在后错固领域的应用做了详解.同时结合深圳国银民生大厦的幕墙安装项目,依据 后锚固规范对免清孔施工技术的应用和产品承载力计算做了案例分析. [关键词]免清孔;后错固;抗震;胶粘剂;倒锥形螺杆;施工技术 [中图分类号]TU746 [文献标识码]A [文章编号]1002-8498(2016)22-0077-04 Research and Application of Non-cleaning Technology in Post-installed Fastening Chen Jiahui (Hilti China Commercial Trading Co.Ltd.Shanghai 200032 China) Abstract:Effect of cleaning concrete hole is key step for the loading capacity of chemical anchor.This paper introduces the product portfolio mechanic theory and seismic test requirement of non-cleaning (SAFEset)technology in post-installed application.Together with the project in Shenzhen Minsheng Financial Tower calculation example is presented based on post-installed design code. Key words:non-cleaning;post-installed;seismic;adhesive;cone-shaped rod;construction 混凝土建筑在施工过程中常常因构件功能变体内,体积比为5:1.注射过程中,双组分通过一个 更、设计图纸修改、预埋过程中的钢筋出现错位或连接到薄膜包装结合口的静态混合喷嘴,将两者结 遗漏,需要在基材中进行后补植筋或种植化学铺合起来,产生凝固化学反应,形成黏结强度.胶粘 栓,此应用通称为后错固.后错固的施工工序分为 剂的施工温度范围在-5~40℃,本文所介绍的胶粘 标定孔位、钻孔、清孔、注射胶体和种植连接件.现 剂基本性能如表1所示.倒锥形螺杆的强度等级为 场清孔的效果是影响锚固件抗拉和抗剪承载力的 6.8级碳钢,表面为热浸镀锌涂层,全长不小于螺杆 关键因素.如果孔径内遗留灰尘或砂石过多,将隔 直径的9倍. 断胶体与基材孔壁或连接件(钢筋或螺杆)的接触 面积,黏结力不足将导致锚固件系统在外荷载作用 胶粘剂 下被拔出,甚至出现混凝土构件的倒塌,影响建筑 4. 锥体单元 安全.为此,喜利得公司研发了免清孔技术 倒锥形构造螺杆 (SAFEset)及产品,目的就是防止因施工现场清孔 不规范所导致的错固件承载力下降和提高现场施 工水平. 图1倒锥形螺杆 1免清孔技术介绍 Fig.1 Cone-shape rod 免清孔技术系统由胶粘剂与倒锥形螺杆组成 (见图1).胶粘剂...
2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 63 D0I:10.7672/5js2015070063 后注浆超长桩试验及极限承载力研究 张春锋,王笑2,姚文娟1 (1.上海大学土木工程系,上海200072;2.上海长凯岩土工程有限公司,上海200070) [摘要]后注浆技术能弥补常规灌注桩存在的承载缺陷,现广泛适用于高层、超高层建筑.通过现场静载试验,对 比分析非注浆桩和后注浆桩的承载性状,试验表明:注浆可大幅提高单桩承载力;轴力随着深度的增加而减少;桩 端注浆时端阻比最大,但仍只有1%,端阻力不能充分发挥;后注浆侧阻力的提高主要来自桩身中下部,对于超长 桩,无论注浆与否,其桩顶荷载主要由桩侧摩阻力提供.桩端注浆对单桩承载力的大幅提高使得规范承载力确定 方法过于保守,提出的改进方法计算得到的极限承载力和实测值最接近,误差在6.4%左右. [关键词]桩基础;高层建筑;钻孔灌注桩;后注浆;试验;承载力 [中图分类号]TU753.3 [文献标识码]A[文章编号]1002-8498(2015)07-0063-05 Experimental and Theoretical Study on Ultimate Bearing Capacity of Post-grouted Super-long Pile Zhang Chunfeng' Wang Xiao2 Yao Wenjuan' (1.Department of Civil Engineering Shanghai University Shanghai 200072 China; 2.Shanghai Changkai Geotechnical Co.Ld.Shanghai 200070 China) Abstract:Due to the shortings of low bearing capacity bringing by the bored pile post-grouted bored piles have been widely used in tall buildings.Bearing capacity characteristics of grouting pile and non- grouting bored pile are analyzed paratively based on the statie load test in the field.Test results are shown as follows that the bearing capacity of single pile can be significantly strengthened by grouting the axial force decreases with the increase of the soil depth the ratio of pile end resistance to pile top load is the maximum with only 10 percent when the pile end is grouted and the end resistance can't make full contribution the increase of side resistance of post-grouted pile mainly stems from the middle and lower ...
施工技术 2010年12月 94 CONSTRUCTION TECHNOLOGY 第39卷第12期 后拆支撑法在超高建筑地下结构施工中的应用 张冰 (上海市机械施工有限公司,上海200072) [摘要]结合工程实例,介绍了在超高层建筑地下结构施工中,采用先施工地下结构,待上部主体结构施工至一定 高度时,再采用爆破技术从下到上依次拆除地下室内钢筋混凝土支撑的施工方法,从而加快了施工进度,满足 了工期要求,也有利于深基坑安全.后拆支撑设计中,对基坑围护初步方案进行优化,由中部十字对撑四周边桁架 方案改为中部圆形环梁四周边桁架.重点介绍了地下结构施工工艺以及室内爆破和主体结构保护措施. [关键词]后拆支撑;室内爆破;深基坑:地下结构 [中图分类号]TU744.5;TU753.6 [文献标识码]A[文章编号]1002-8498(2010)12-0094-03 Application of Late-dismantling Support Method in Underground Structure Construction of Super High-rise Building Zhang Bing (Shanghai Mechanized Construction Co.Iad.Shanghai 200072 China) Abstract:Combining with the engineering practice the construction method for underground structure for high-rise building is introduced which is that carrying out the underground structure construction first then utilizing blasting technology to dismantle all reinforced concrete supports inside the basement from the bottom up after the main superstructure reaches a certain height.This construction method not only expedites the construction schedule and satisfies the construction period requirement but also guarantees the safety of the deep foundation excavation.In design of late-dismantling support scheme the original retaining scheme for foundation excavation is optimized of which the scheme of middle circle beam and periphery truss is used instead of middle cross-shaped support and periphery truss.Furthermore the construction technologies for underground structure indoor blasting and protecting of main structure ...
施工技术 2011年7月上 90 CONSTRUCTION TECHNOLOGY 第40卷第344期 后张拉预应力鞍形网壳成型过程模拟 陈东兆1,郝际平2,于庆展1 (1.河南工业大学土木建筑学院,河南郑州450052; 2.西安建筑科技大学研究生学院,陕西西安710055) [摘要]对一后张拉预应力成型鞍形网壳模型的成型形状进行了非线性有限元模拟,建模时使用连接件模拟了上 弦杆搭接螺栓连接以及腹杆的鸭嘴端螺栓连接.考虑了几何非线性和材料非线性,将“tube-to-tube”接触算法应用 于梁、杆单元组成的结构模型中,与传统建模和分析方法相比,成型预测精度大幅度提高. [关键词]后张拉预应力;网架;成型;有限元法;接触 [中图分类号]TU394;TU745.2 [文献标识码]A [文章编号]1002-8498(2011)13-0090-04 Forming Process Simulation of Hyperbolic Paraboloid Latticed Shell by Post-stress Chen Dongzhao' Hao Jiping2 Yu Qingzhan' (1.School of Civil Engineering Architecture He'nan University of Technology Zhengzhou He'nan 450052 China; 2.School of Graduate Student Xi'an University of Architecture Technology Xi'an Shaanxi 710055 China) Abstract:Nonlinear finite element simulation is carried out in shape prediction of a post-stress shaped hyperbolic paraboloid latticed shell model.Connector elements are used to model the bolt connection of the top joint and the end of web.Based on geometry and material nonlinearity new FEM refering tube- to-tube contact calculation based on beam and truss elements is employed to shape prediction.The new method is relatively much more accurate than the previous way. Key words:post-stress;space truss;shape formation;FEM;contact 预应力成型的平面拱形桁架大跨结构被称为程并不多见.有人将预应力成型思想引人鞍形网壳 STRARCH结构(STRessed ARCH的缩写),其结构结构试验,成功张拉形成了马鞍形网壳,并对此后张 设计思想是:机构变结构.其施工工艺很独特:首先拉预应力成型鞍形网壳进行了理论研究.但是,其 钢桁架在地面拼装成门形钢架,预应力索穿越桁架试验网架杆件采用了价格昂贵的无缝管,所建立的 下弦圆钢管,下弦杆截短,此时结构是个几何可变体 计算模型未能考虑钢索与节点之间的滑动接触,网 系.施加预应力,桁架将形成张力,并逐渐往上拱,壳外形...
[关键词]基坑;软土地区;支护;设计;监测 【中图分类号】TU753.1[文献标识码]A【文章编号]1002-8498(2015)08-0114-04 DesignandMonitoringAnalysisofDeepFoundation ExcavationintheThickSoftSoilArea Li Huanhuan',Gao Luhao²,Gao Zhi²,Liu Kui² (1.College ofGeologicalEngineering and Surveying Institute,Chang'anUniversty,Xi'an,Shaanxi710054,China; 2.ComprehensiveSurveyandResearchInstiuteofElectrnicsMinistryofInformationIndustry,Xian,Shaanxi710054China) Abstract:The design scheme of deep foundation excavation engineering of Jiaxing Jinghui square and the monitoring of the construction process are introduced,which makes the information construction.Authors discuss the variation of deep soil displacement,the variation ofroad settlements,the variation of tension force of anchor pile and the variation of groundwater level outside the excavation in detail.The result shows that the prestress of anchor pile decay faster in the soft soil area,the steel braced has a good supporting effect on the soil displacement,and SMW pile can effectively seal water. Key words:foundation excavation; soft soil;supports;design;monitoring 近年来,随着地下空间的开发和利用,超大深面积82966m²,地上拟建1幢25层商办综合楼,1幢 受到重视。
2016年10月下 施工技术 第45卷第20期 CONSTRUCTION TECHNOLOGY 53 D0I:10.7672/5js2016200053 华润总部大厦超长春笋状双层网格预应力拉杆 塔冠安装技术 郭应林,陈凯,张健康,许超 (中建三局集团有限公司南方公司,广东深圳518000) [摘要]华润总部大厦塔冠为双层网格结构,结构形式由外框柱、8道水平桁架、预应力拉杆组成.塔冠安装采用地 面拼装和高空原位安装2种方式.安装过程复杂,涉及到塔冠胎架安装、预留穿塔冠塔式起重机支撑处理,塔冠安 装过程中几种塔式起重机的拆除与转换,后期钢拉杆张拉顺序、施工工艺等较复杂技术工艺.通过华润总部大厦 塔冠安装,对超高层春笋状双层网格预应力拉杆塔冠安装施工技术进行研究. [关键词]安装工程:双层网格;预应力;拉杆;塔冠;安装:施工技术 [中图分类号]TU974 [文献标识码]A[文章编号]1002-8498(2016)20-0053-05 Installation Technology of Super-long Bamboo Shoot Double Deck Grid Prestressed Pull Rod Tower Crown in Huarn Headquarters Building Guo Yinglin Chen Kai Zhang Jiankang Xu Chao China Construction Third Engineering Bureau Co.Lid.South Branch Shenzhen Guangdong 518000 China) Abstract:Huarun headquarters building tower crown is the double grid structure whose frame structures consist of the outside frame columns eight horizontal trusses prestressed pull rods.The installation of the tower crown applies two ways of assembly on the ground and high altitude in-situ installation.The installation process is plex involving the tower crown bracket installation reserved tower crane tower crown in supporting treatment removal and transformation of several the tower crane tower in the installation process the late steel rod tension sequence and construction technology of plex technology.Through the installation of Huarun headquarters building tower crownn double grid shaped prestressed rod spring tower installation and construction technology are studied. Key words:instal...
施工技术 2013年7月上 52 CONSTRUCTION TECHNOLOGY 第42卷第13期 D0I:10.7672/8gjs2013130052 化学改性法处理盐渍土地基试验研究 殷帛成,顾强康1,徐桑振,李强2,屈波1 (1.空军工程大学航空航天工程学院,陕西西安710038;2.沈空察设计院,辽宁沈阳110015) [摘要]许多处理过的盐渍土地基会发生二次盐渍化从而导致路基再次出现盐渍土病害,而地下水含盐量大则是 土体发生二次盐渍化的根本原因.首先将土样置于一定浓度的盐溶液中进行毛细水上升试验以模拟实际二次盐 渍化过程,之后进行盐胀试验测量土体的盐胀率,将试验土样的压实度、CaCl2掺量、Na2SO 水溶液浓度设为控制 变量,通过试验数据的对比分析得出这3个因素对使用CaC12抑制硫酸盐渍土地基二次盐渍化效果的影响. [关键词]地基;盐渍土;盐胀率;硫酸盐;氯化钙;试验 [中图分类号]TU448 [文献标识码]A [文章编号]1002-8498(2013)13-0052-04 The Test Study of Salty Soil Foundation Treatment with Chemical Modified Method Yin Bocheng' Gu Qiangkang' Xu Sangzhen' Li Qiang? Qu Bo' (1.College of Aeronautics and Astronautics Engineering Air Force Engineering University Xi'an Shaanxi 710038 China; 2.Survey and Design Institute of Shenyang Military Region Air Force Shenyang Liaoning 110015 China) Abstract:Much treated salty soil of highway foundations often occurs secondary salinization and causes saline soil diseases again.The fundamental reason is the excessive groundwater salinity.In order to study the impact of the effect of using CaCl to inhibit the secondary salinization of sulphate salty soil ground the soil paction CaCl dosage and Na SO solution concentration will be set to the control variables. This paper simulated the process of secondary salinization by doing capillary water rise tests and detected salty inflation rate of the soil by doing salt expansion tests. Key words:foundations;salty soil;salt heaving rate;sulphate;calcium chloride;test 根据盐成分的不同,盐渍土可分为氯盐渍土、区的...
施工技术 2014年5月下 10 CONSTRUCTION TECHNOLOGY 第43卷第10期 D0I:10.7672/sgjs2014100010 加强绿色建筑科技研发推动绿色建筑规模化发展* 林海燕1 2,王清勤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]总结了国家科技计划项目在绿色建筑标准规范、关键技术、产品和设备,建筑材料、平台和基地、人才培养、 工程应用等方面取得的系列成果,探讨了绿色建筑发展的趋势和重点. [关键词]绿色建筑;技术研发;规模化发展;节能减排 [中图分类号]TU201.5 [文献标识码]A [文章编号]1002-8498(2014)10-0010-04 Enhancing Technology Research and Promoting Scale Development of Green Building in China Lin Haiyan1.2 Wang Qingqin.2 (1.China Academy of Building Research Beijing 100013 China:2.Beijing International Collaboration Base on Green Building Beijing 100013 China) Abstract:In this paper a series of achievements by National Sci-Tech Research Plan related to green building were summarized including the standards and codes key technologies product and equipment building materials platforms and bases personnel training and engineering applications.The new development trends and main research points related to green building were discussed. Key words:green buildings;technical research and development;scale development;energy conservation and emission reduction 0引言 和技术发展规划纲要(2006一-2020年)》明确设置了 发展绿色建筑已成为实现我国节能减排目标、“城镇化与城市发展”领域“建筑节能与绿色建筑” 提供安全舒适人居环境、促进可持续发展的重要内优先主题,要求从“绿色建筑设计技术、建筑节能技 容和抓手,是转变传统建筑业发展方式和改变城乡术与设备、可再生能源装置与建筑一体化应用技 建设模式的战略选择,关乎人民群众和国家的切身术、精致建造和绿色建筑施工技术与装备、节能建 利益和长远利益.绿色建筑是科技引领和支撑技材与绿色建材和建筑节能技术标准”等方面开展科 术密集型科技的发展方向,我国政府主管部门高度技攻关工作. 重视绿色建筑领域科技工作,大力开展科研工作, 为落实国家中长期科学和技术发展规划纲要, 在强化技术集成与示范,加快成果转化与应用等方 科技部于2012年5月发布了《“十二五”绿色建筑 面已取得了重大进展,有力支撑了我国绿色建筑健 科技发展专项...
施工技术 2012年11月下 62 CONSTRUCTION TECHNOLOGY 第41卷第377期 加固后楼板的力学性能分析与现场试验研究 陈赞,易乐平,顾天熊,王国佐 (苏州二建建筑集团有限公司,江苏苏州215131) [摘要]以有限元理论为基础,利用ANSYS软件,建立某楼板的数值模型,通过施加均布荷载,分析经过加固后的 楼板的物理力学状态,并和现场实测结果进行对比,分析相关指标的计算值和实测值的偏离程度,为“工程加固工 程检测”提供新思路. [关键词]加固;楼板;有限元分析;检测 [中图分类号]TU755 [文献标识码]A [文章编号]1002-8498(2012)22-0062-06 Mechanical Properties Analysis and Test Research on the Strengthened Floors Chen Yun Yi Leping Gu Tianxiong Wang Guozuo Sushou Erjian Construction Group Co.Ld.Suzhou Jiangsu 215131 China) Abstract:Based on the theory of finite element method the numerical model for a building floor was established using the software ANSYS.The physical and mechanical properties of the strengthened floor were analyzed by applying uniform load on the model.The simulation results were pared to site measurements and the deviations of some parameters were analyzed.This research provides a new idea for engineering strengthening and engineering inspection. Key words:strengthening;floors;finite element analysis;detecting 1工程概况 2施工特点 苏州市吴中区资产经营管理有限公司天鸿大 1)工期紧,任务重,气温低.本工程施工工期 厦位于吴中区塔韵路和吴山街交界处,由A楼(16 为2012-02-012012-03-15,工期44d 施工期间正 层)和B楼(10层)两栋组成.本次工程加固施工 值冬季低温期(日平均气温为6~8℃,期间最高温 涉及的是B楼A区(主楼).其主体结构为10层框 度约11℃),如何确保在工期紧、气温低的条件下加 架结构,筏板基础,最大建筑高度为46.45m 平面呈 固工程用胶(底胶、浸渍胶、结构灌注胶、粘钢胶、植 矩形,东西①~2轴长71.800m 南北E~®轴宽 筋胶等)的固化时间及强度是本工程施工中应重点 20.400m 底层、2层层高为5.00m 其他层层高 予以关注的地方. 为4.00m. 2)承载力提高幅度较大,部分区域甚至达到 现因业主变更主体结构使用功能,部分区域楼 15kN/m2 荷载提高幅度为原设计值的3倍. 板荷载发生变动(楼板承载力由原来的4.0~ 3)多工种同时施工.由于工期较紧,本工程加 5.0kN/m2增至7.0~15.0kN/m2)....