[关键词】高层建筑;压缩变形;均匀补偿;数据分析 [中图分类号]TU974[文献标识码]A[文章编号]1002-8498(2016)12-0034-04 Data Analysis and Research of Compression-deflecion in ChowTai FookFinance Centrein Guangzhou Zou Jun',Sun Hui²,Li Jie²,Xie Guosong² (1.ChinaStateConstruction Engineering Co.,Ld.Bejing100037,China; 2.China Construction Fourth Enginering Division Co.,Ld.,Guangzhou,Guangdong 510000,China; 3.China ConsructionThirdBureauFirst Engineering Co.,Lid.,Wuhan,Hubei43000,China) Abstract:The main structure presion is a key factor which is necessary to be monitored and controlled in high-rise building construction.Because the pression of the main structure is measured in different construction stages forreal time,the practicingmeasuring method and controlled process of the pression are studied. The pression of Chow Tai Fook Finance Centre in Guangzhou is monitored factors and pression ratio are discussed and the method of pre-added pression value is investigated. Key words:tall buildings; pression deflection; uniformity pensation;data analysis
0引言的伸臂桁架、平面梁以及一些腰桁架、斜撑产生较 由于超高层建筑高度远超过普通的高层建筑,大的变形次应力,从而导致整体结构的安全性、稳 质量也是普通高层的数倍,在质量和塔楼高度翻倍定性下降,影响建筑物的使用功能。
[关键词】高层建筑;施工电梯;计算方法;拟合公式 [中图分类号】TU857 [文献标识码】A [文章编号】1002-8498(2016)12-0038-04 Exploration andApplication ofConstructionElevators Calculation MethodatChowTaiFookFinanceCenterinGuangzhou Ye Haowen', Sun Hui²,Li Jie² (1.China State Construction Engineering Co.,Lud.,Beijing 100037,China; 2.China Construction Fourth Engineering Division Co.,Ld.,Guangzhou,Guangdong 51000o,China) Abstract:Themethod to determine the amount of construction elevators proposed in this paper adopts the theory of‘rough estimate and precision inspection'.Firstly,the amount of construction elevators is calculated according to the method of rough estimate.After the specific planning at plan or profile is determined,matching degree between traffic capacity of construction elevators and the actual workers and goods amount.This method achieves the objective of optimal allocation of construction elevators and improves the scientificalness of the construction organization plan. Key words:tall buildings;elevators; calculated method;fitting formula 0引言 一套施工电梯使用效率计量统计方法,以及施工电 在超高层建筑施工中,垂直运输的核心目标是梯数量计算理论公式。
[关键词]脚手架;扣件式脚手架;竖向承载力;非线性分析;有限元分析 [中图分类号]TU731.2 [文献标识码】A [文章编号】1002-8498(2013)17-0021-05 NonlinearAnalysisandApplicationofVerticalBearingCapacityfor DoubleRowsFastenerScaffoldsinPZB1401Project Li Xuejin',Tong Huawei',MiXiang² (1.School of Civil Engineering,Guangzhou Unisersity,Guangzhou,Guangdong 510006,China; 2.China Overseas(Shenzhen) Construction Co.,Ltd.,Shenzhen,Guangdong 518057,China) Abstract:The authors use finite element software MIDAS/Gen to establish overall calculation model on double rows right angle fastener scaffold which is semi-rigid connected,simulate the initial defect by virtualhorizontal force,calculate nonlinear buckling strength,point out the yardstick of yield failure on defective scaffold and validate the rationality of the calculation model by existing experimental results. Compared with the curent codes, the calculation results are reliable and the method of modeling and simulation canbe applied to the vertical bearing capacity calculation of scafld in plicated working conditions. Key words: scaffolds; fastener scafolds; vertical bearing capacity; nonlinear analysis; finite element analysis 《建筑施工扣件式钢管脚手架安全技术规范》 范要求设置连墙件,在进行脚手架竖向承载力计 JGJ130-2011总结了扣件式钢管脚手架的竖向承算时,计算长度系数μ也无法根据规范表5.2.8 载力计算公式,提供了脚手架常用搭设参数的选用来选取;另外,在该项目塔楼施工中,由于塔楼层高 表格,并提出了各项构造措施,可以满足大部分建 3.9m,楼层上、下相互呈不规则错开,也导致外脚手 筑工程规则脚手架的搭设和计算要求。
2012年4月下 施工技术 第41卷第363期 CONSTRUCTION TECHNOLOGY 67 基坑周围深层土体沉降预测研究 尹盛斌1,丁红岩2 (1.汤臣(中国)有限公司,上海200122:2.天津大学建筑工程学院.天津300072) 【摘要】工程经验表明:任意的围护结构变形形式均可近似利用正向转动、反向转动及挠曲等3种基本变形模式进 行拟合,且通过对基坑开挖过程的有限元数值模拟可知,当围护结构发生上述3种基本变形模式时,坑外深层土体 沉降存在较为明显的分布规律.利用3种基本变形模式对围护结构的侧移曲线进行拟合,求得所对应的最大位移 值,然后根据3种基本模式所对应的坑外深层土体沉降曲线分布,求得每一基本模式所对应的坑外深层土体沉降 分量,并进行叠加,从而求得坑外深层任意点的沉降值. [美键词]地下工程:基坑:沉降:数值分析:基本变形模式 【中图分类号]TU443 [文献标识码]A [文章编号]1002-8498(2012)08-0067-06 Research on Prediction of Sub-surface Settlement to Foundation Excavation Yin Shengbin' Ding Hongyan2 (1.Tomson Group in Shanghai Shanghai 200122.China: 2.4e可f Civil Engineering 7 ianjin University Tiangjin300072 China) Abstract:The project experience shows that arbitrary displacement pattern of the retaining wall can be fitted using the three basic deformation modes which are the forward rotation reverse rotation and deflection.The numerical simulation of the foundation excavation shows that for the three basic deformation modes the dislribution of the sub-surface settlement of the soil can be fitted by experienee curves.Esing the three basic deformation modes arbitrary displacement pattern of the retaining wall can be fitted and the maximum displacement value for each basic deformation mode also can be obtained. Based on the experience curve calculated by the trumerical analysis method the corresponding ponent of the sub-surface settlement for each basic deformation mode can be calculated.Then adding the three ponents of the sub-surface settlem...
[关键询]道路工程:路线:平面线形;遗传算法:优化 [中图分类号】U412.33【文献标识码]A[文章编号】1002-8498(2012)11-0049-04 AnAdaptiveGeneticAlgorithmBasedonMulti-populationParallel EvolutionaryforHighwayAlignmentOptimizationModel Chen Jianxin',LO Maixia², Chen Jia” (1.Highy College,Chang²an Uniersty,Xi'an,Shaanxi 710064,China; 2. Xi'an Municipai Design Instiaute Co. , Lud. , Xi'an, Shaanxi 710065, China; 3. Beijing Jialin Yuren International Edueation Center of Science and Technology Co., Ltd., Bejing 100085, China) Abstract;Based on the characteristics of the highway design, the authors transfers all the factors involved in the highway design to a cost-optimized-oriented model and designs a variety parallel genetic algorithm to optimize highway design. While maintaining evolution stability of excellent individual, the algorithm can improve convergence rate and accuracy and avoid premature convergence generated by single- population evolution.To some extent,it makes up generalization-lacking defects of a single species or steady parameters in premature overing. Finally, the algorithm is verified which achieves a good result. Key words:routes; horizontal alignment; genetic algorithm; optimization 道路选线模型的优选设计是复杂的多目标决划法、网络优化法以及遗传算法。
2015年9月下 施工技术 第44卷第18期 CONSTRUCTION TECHNOLOGY 81 D0I:10.7672/5j52015180081 基于蒙特卡罗方法的大型网络计划工期 固定-资源均衡优化* 张厚先 (南京工程学院建筑工程学院,江苏南京211167) [摘要]大型网络计划工期固定资源均衡优化是进度计划制定者最具挑战性的任务之一.大型网络计划工期固 定-资源均衡优化是工作数较多(例如超过50个)的网络计划满足工期固定的情况下的资源均衡.提出了基于蒙 特卡罗方法的分区优化求解大型网络计划工期固定资源均衡优化问题,用工作最早开始时间和最迟完成时间、以 分区内可能解的组合数小于微机有效处理循环次数为限,把大型网络计划的工作划分到足够多的分区,以减少分 区内各工作满足某一条件的可能解组合个数,减少在全工期时段上满足工期固定和资源均衡的可能解组合个数, 从而便于微机用蒙特卡罗方法、以有限的循环次数和较高的优化解使最优解的概率得到大型网络计划的工期固 定-资源均衡优化的解.基于蒙特卡罗方法的分区优化求解工期固定-资源均衡优化,通过了具有61个工作的大型 网络计划工期固定资源均衡优化算例验证. [关键词]项目管理;大型网络计划;蒙特卡罗方法;分区优化;循环次数 [中图分类号]TU721.3;C931.2 [文献标识码]A [文章编号]1002-8498(2015)18-0081-05 Resource-Leveling Optimization with Fixed Duration for a Large Network Plan Based on the Monte Carlo Method Zhang Houxian School of Architecture and Civil Engineering Nanjing Institute of Technology Nanjing Jiangsu 211167 China) Abstract:Resource-leveling optimization with fixed duration for a large network plan is one of the most challenging tasks of construction project planners.Resource-leveling optimization with fixed duration for a large network plan whose works number is more(such as more than 50)requires minimization of total project duration while considering issues related to optimal resource leveling.The partition optimization of resource-leveling optimization with over a fixed duration for large network plans based on the Monte Carlo method is put forward.With a limitation on the number of possible solutions to the partition the work of a large network plan is partitioned a...
2016年2月下 施工技术 第45卷第4期 CONSTRUCTION TECHNOLOGY D01:10.7672/sgjs2016040001 基于绿色建造的施工现场装配化思考* 肖绪文1.2,冯大阔 (1 中国建筑股份有限公司,北京100037;2.中国建筑业协会绿色施工分会,北京100037) [摘要]在我国加快改革开放和转变生产方式的背景下,面对我国新型城镇化和建筑产业现代化发展的需求,加快 推进基于绿色建造角度的施工现场装配化已成为大势所趋.首先阐释了施工现场装配化的概念、内涵、前提条件 及其与绿色建造的关系;而后深入分析了我国施工现场装配化推进的背景、意义及推进现状和存在问题.在此基 础上,探讨了推进施工现场装配化需要强化研究的若干问题,并提出了相关建议,以期推进基于绿色建造的施工现 场装配化. [关键词]装配化;绿色建造;前提条件;推进建议 [中图分类号]TU741 [文献标识码]A [文章编号]1002-8498(2016)04-0001-04 Study on Site Assembly Based on Green Construction Xiao Xuwen.2 Feng Dakuo' (1.China State Construction Engineering Corporation Beijing 100037 China; 2.China Construction Industry Association Green Construction Committee Beijing 100037 China) Abstract:Under the background of accelerating the reform and opening as well as transforming production modes and faced with demands of new urbanization and construction industry modernization site assembly based on green construction has bee a trend in China.The concept connotation and precondition of site assembly are firstly introduced as well as the relationship of site assembly vs.green construction.Subsequently the significance status and problems of promoting site assembly are described in details.On the basis several promoting suggestions are put forward to further promote site assembly based on green construction in China. Key words:precast;green construction;precondition;promoting suggestions 1施工现场装配化与绿色建造 进行装配使用,是施工现场装配化的重要方面. 1.1施工现场装配化 2)结构构件装配化将在工厂预制好的建筑 施工现场装配化就是把通过工业化方法在工 主体结构构件在施工现场进行装配安装以...
施工技术 2012年8月下 56 CONSTRUCTION TECHNOLOGY 第41卷第371期 基于系统论的建设工程紧缩工期管理研究 甄志禄1,艾红梅2 (1.天津大学管理学部,天津300072;2.河北建设集团有限公司,河北石家庄050061) [摘要]基于系统论思想,结合建设工程管理实践经验,采用系统分析方法,提出技术、资源、关系和信息是建设工 程紧缩工期管理系统的4个子系统,揭示了4个子系统及要素间相互关系,提出了4个子系统管理原则,构建了系 统管理框架,并对每个系统要素提出了具体管理措施. [关键词]项目管理;系统论;建设工程;紧缩工期管理 [中图分类号JTU712.1 [文献标识码]A [文章编号]1002-8498(2012)16-0056-05 Research on Tight Schedule Management of Construction Projects Based on System Theory Zhen Zhilu' Ai Hongmei2 (1.School of Management Tianjin University Tianjin 300072 China; 2.Hebei Construction Group Co.Ltd.Shijiazhwang Hebei 050061 China) Abstract:Based on system theory and past experience of construction management a management system for projects with tight schedule was proposed which consists of four subsystems of technology resource relationship and information.In this paper the relationship among these four sub-systems and their key elements were described and their management principles were highlighted.A framework was established for the management system and detailed management methods were proposed for each key element. Key words:project management;system theory;construction project;tight schedule management 抗险救灾、灾后重建、组织重大活动所使用的了对建设工程紧缩工期有重要影响,工程实践中易 公共建筑及对工期有特殊要求的建设工程,其工期出现问题,应重点管理与控制的要素,这些要素构 明显短于正常工期,称为紧缩工期.这些工程如不 成了紧缩工期管理系统,其按管理对象分为技术、 能按期交付使用,除造成经济损失外,还可能引发资源、关系和信息4个子系统.技术子系统主要包 恶劣社会影响,对这些紧缩工期的管理有异于合理 括施工组织设计与工程设计.施工组织设计是指 工期管理,紧缩工期短、任务重,更需要系统思维, 导工程施工的总体部署,类似于作战计划,主要包 理清系统各要素间的内在联系.在解决问题时,紧 括进度计划、三大资源计划、施工方案、质量安全进 缩工期管理需要各种计划更...
2012年11月上 施工技术 第41卷第376期 CONSTRUCTION TECHNOLOGY 25 基于突变级数法的绿色施工评价研究 闫志刚,杜立峰,王雪丽 (石家庄铁路职业技术学院,河北石家庄050041) [摘要]建筑业在我国国民经济体系中具有重要地位,建筑业的节能减排对于节能减排工作意义重大,以节能减排 为核心理念的绿色施工是建筑业实施可持续发展战略的重要环节.在我国由于绿色施工的相关评价标准、评价体 系的研究相对匮乏,尚未形成一套完整的绿色施工评估标准与评估体系.基于全寿命周期评价理论和突变级数 法,并参照我国绿色施工相关规定,通过对建筑施工活动中的环境污染和能源消耗进行辨识,探讨基于我国国情的 绿色施工评价标准体系与评价方法. [关键词]绿色施工;评价方法;突变级数法;全寿命周期 [中图分类号]TU74 [文献标识码]A[文章编号]1002-8498(2012)21-0025-05 Study on Green Construction Evaluation Based on Catastrophe Progression Method Yan Zhigang Du Lifeng Wang Xueli Shijiazhuang Institute of Railway Technology Shijiazhuang.Hebei 050041 China) Abstract:Construction industry is the pillar of the national economy and the conservation and emission reduction of construction industry is very important.Green construction is an important measure for conservation and emission reduction of construction industry.However the evaluation criteria and methods for green construction are absent in China.According to the actual situation in our country this paper discussed the establishment of a set of evaluation criteria for green construction which identify the environmental pollution and energy consumption during construction activities based on life cycle impact assessment method and catastrophe progression method. Key words:green construction;evaluation;catastrophe progression method;life cycle 0前言 行;2005年由住房和城乡建设部与科技部联合编制 节能减排作为我国“十二五”期间的一项重要的《绿色建筑技术导则》正式颁布.随着我国产业 工作,是我国落实可持续发展战略的重要举措.建 结构的升级以及节能减排工作的深入开展,绿色施 筑业在我国国民经济体系中具有重要地位,建筑业 工将成为建筑业必然的发展趋势门.目前,我国虽 的节能减排对于节能减排工作大局意义重大.以 然已有诸如绿色建筑评价标准、奥运绿色建筑评估 节能减排为核心理念的绿色施工是建筑业实施可 体系等绿色建筑相关的评价体系,但具有针对性的 持续发展战略的重要环节.目前在发达国家,不仅 绿色施工相关评价标准与评价方法尚缺乏,难以满 已制定较完善的绿色施工相关法律法规,同时相关 足实际应用需求,这也成为我国绿色施工管理与绿 的评价体系与方法也较成熟,例如英国的 色施工技术在实际推广应用上的障碍2.本文基 BREEAM、美国的LEED、日本的CASBEE、加拿大的 于过程管理的思想,运用全寿命周期评价的方法, GBTool等.同时,ISO14000环境管理标准认证也作 对施工活动进行生态足迹的追溯,对绿色施工评价 为建筑企业绿色管理质量的标准得到了大力推广, 标准进行了探讨,利用突变级数法,构建建筑企业 成为建筑业国际贸易的绿色通行证.我国的绿色 绿色施工综合评价体系,并结合工程实例进行应 施工起步较晚,2004年绿色施工在北京开始全面推 用,对施工方案进行了评价与比选. 1绿色施工的全寿命周期评价 [收稿日期]2012-04...
[关键词]卡尔曼滤波;神经网络;变形;监测;补偿 [中图分类号】TU753[文献标识码】A[文章编号】1002-8498(2016)01-0073-04 ApplicationofKalmanFilterBasedonNeuralNetwork forBuildingDeformationMonitoring HanYakun',Wen Hongyan²,Chen Guanyu',Guo Lei,Wang Qingtao (1.GuangxiKeyLaboraoryfSpatialInformationandGeomatics,Guilin,Guangxi541004,China;2.Colleef Geomatics and Geoinformation,Guilin University ofTechnology,Guilin,Guangxi 541004,China; 3.Zhejiang Brigade of Surveying and Mapping,Hangzhou,Zhejiang 310030,China;4.Guangxi Scientific ExperimentCenterofMining,MetallurgyandEvironmen,GuilinUniersityofTechnology,Guilin,Guangxi541004,China) Abstract;Kalman filteris an optimization estimationmethod ofrecurrence formula based on least mean square error,it has been one of the most frequently-used filter algorithms. Generally, the standard Kalman filter demands dynamic noise and observation noise with the known prior information,because of these reasons,which restricts its application in reality.However,the reality system identification by use of nonlinear mapping ability of neural network to pensate estimate error brought by imprecise system model,which is a optimal filtering algorithm,it solves the problems of Kalman filter on bad stability and low accuracy and improves the effect of Kalman filter.In this paper, the experiment result shows the provided method is effective and available in deformation monitoring application. Key words:Kalman flter; neural network; deformation;monitoring; pensation 1卡尔曼滤波的基本理论[X=Φ-1X-+F--1(1) 卡尔曼滤波是最优估计方法的一种,它通过不断L=BX+ 递推、修正估计过程,且无需对大量观测数据进行存式中:2为第k期的动态噪声;4为第k期的观测 储使其对动态数据处理可以具有良好的效果。
施工技术 2014年4月下 60 CONSTRUCTION TECHNOLOGY 第43卷第8期 D01:10.7672/js2014080060 基于欧标的异形截面端板螺栓连接节点 构造及设计方法 郭静,陈国栋,王煦,范晓伟,周来竺 (精工钢构集团国际业务总部,上海200233) [摘要]以麦加火车站项目为背景,探讨了基于欧标的异形截面的端板螺栓连接节点的构造及设计方法.通过设 置合理的手孔,满足了建筑造型要求的内端板连接构造和高强螺栓的安装施工要求.参考欧标的钢结构设计规范 EC3-1.8中对H形端板连接节点的设计规定,结合异形截面端板螺栓连接节点的设计和有限元分析结果,对于此 类异形截面端板连接形式,确定了建议的屈服线模式,建立了适合此类节点的设计方法.根据节点构造和受力特 点建立了合理的简化有限元模型,得到了组成端板连接节点的各部分受力情况,验证了节点的可行性. [关键词]钢结构;高强螺栓;异形截面;端板;有限元分析 [中图分类号]TU758 [文献标识码]A [文章编号]1002-8498(2014)08-0060-05 Structure and Design Method for Special-shaped Section Endplate Bolt Connection Joint Based on Eurocode Guo Jing Chen Guodong Wang Xu Fan Xiaowei Zhou Laizhu International Business Department Jinggong Steel Building Group Shanghai 200233 China) Abstract:Based on Mecca Railway Station the authors discuss structure and design method for special- shaped section endplate bolt connection joints based on Eurocode.By setting reasonable handhole inner endplate's connection structure and installation for high-strength bolt are satisfied.Making reference to design regulations for H-shaped endplate connection joint in the steel structure design code EC3-1.8 bing with design and finite element calculation result of special-shaped section endplate bolt connection joint yield line mode for the connection form is suggested the design method for the connection joint is established.Based on joint's structure and loading features a reasonable and simple finite element model is established to know the loading features of each ...
2016年11月上 施工技术 第45卷第21期 CONSTRUCTION TECHNOLOGY 25 D0I:10.7672/5gj52016210025 基于智能集成平台的核心筒斜墙段施工 关键技术研究与应用 白宝军,郭应林,许超,刘鹏,张健康,程鹏,张积杰 (中建三局集团有限公司,广东深圳518000) [摘要]智能集成平台顶升过程中,核心筒竖向结构先于水平结构施工.集成平台遇核心筒斜墙段时,需沿斜墙爬 升并整体内收.施工时,核心筒内无水平结构,需搭设型钢操作平台.集成平台斜爬、挂架内退、斜墙支模架设计 等均是施工技术、质量、安全控制重点.型钢支撑平台形成、收缩式操作平台的设计以及核心筒墙体加固、利用 BM模拟集成平台与斜墙空间关系等关键技术的应用,保证核心筒斜墙施工顺利进行. [关键词]高层建筑:智能集成平台;斜墙;加固;施工技术 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2016)21-0025-05 Research and Application of Key Construction Techniques for Core Tube Sloping Wall Segment Based on Intelligent Integration Platform Bai Baojun Guo Yinglin Xu Chao Liu Peng Zhang Jiankang Chen Peng Zhang Jijie (China Construction Third Bureau Group Co.Ltd.Shenzhen Guangdong 518000 China) Abstract:During intelligent integration platform lifting process the core tube vertical structure construct prior to the horizontal structure.When the integration platform encounters core tube sloping wall sections it need to climb along the sloping wall and overall adduction.There is no horizontal structure in core tube it should set section steel operation platform during construction.The integration platform sloping climbing rack back the formwork support design for sloping wall are the key control points for construction quality and safety.The core tube sloping wall construction is assured successfully from the aspects of the section steel support platform forming contraction type operation platform design core tube wall strengthening and the spatial relationship si...
施工技术 2016年1月上 14 CONSTRUCTION TECHNOLOGY 第45卷第1期 D0I:10.7672/sgjs2016010014 基于无人机的深基坑施工安全风险巡视与预警研究* 周诚,蒋双南,林兴贵 (华中科技大学土木工程与力学学院,湖北武汉430074) [摘要]为了解决深基坑施工由于安全监控不力、纠偏措施不及时而发生安全事故的问题,提出了依托无人机飞行 平台,利用视频监控进行现场巡视、信息采集、指令传达及应急处理,并结合构建的风险控制清单,实现深基坑施工 无人机安全巡逻与预警.通过已有研究与事故统计分析进行深基坑风险识别和风险等级划分,确定了无人机安全 监控拟监控项目表.根据视觉传达理论设计指令传达与声光报警规则,根据云平台理念设计系统操作平台,进而 建立了远程自动监控预警系统.同时,结合无人机的优势制订了详细的应急教援流程以实现深基坑事故救援的可 视化,提升救援效率与质量.以武汉轨道交通6号线苗栗路站为例进行案例分析,应用结果表明该方法能实现对 深基坑施工现场的远程自动风险采集、分析,有效传达纠偏指令和进行安全预警响应,并在紧急情况发生后帮助应 急处理小组传达救援指令和疏散人员,实现深基坑施工风险远程自动化实时管控的目的. [关键词]深基坑;无人机;安全巡视;预警响应;应急救援 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)01-0014-06 Research on UAV-based Remote Monitoring for Risks of Deep Foundation Excavation Construction Zhou Cheng Jiang Shuangnan Lin Xinggui (School of Civil Engineering and Mechanics Huazhong University of Science and Technology Wuhan Hubei 430074 China) Abstract:In order to solve the poor security monitoring of construction this paper presents a video surveillance system based on unmanned aircraft flying platform.The system can municate in real-time corrective instructions and emergency rescue mands.Firstly according to the requirements of remote video surveillance this paper intends to design the proposed monitoring program table.Then according to the theory of visual munication design ways to convey instructions and audible alarm rules.This paper develops a detailed emergency response procedures to ensure the safety of deep foundation excavation construction.Taking Mi...
施工技术 2016年6月上 80 CONSTRUCTION TECHNOLOGY 第45卷第11期 D0I:10.7672/8js2016110080 基于扩展有限元法的不同扁平率隧道稳定性研究* 范君黎,朱哲明 (四川大学建筑与环境学院,四川成都610065) [摘要]针对不同扁平率的隧道模型,利用扩展有限元法(XFEM) 对隧道的损伤破坏进行了数值模拟研究,同时进 行了隧道模型试验.隧道模型为含有单一裂纹和不含裂纹的模型,模拟研究了隧道模型的抗压强度和裂纹的起裂 与扩展规律.结果表明,对无裂纹隧道模型,扩展有限元法能够很好地模拟裂纹产生的位置以及扩展的路径,隧道 模型的破坏以拉剪破坏为主,在扁平率为0.9时抗压强度达到最大;对有裂纹模型,扩展有限元法能够很好地模拟 初始裂纹的扩展路径,隧道模型的破坏有明显剪切破坏的痕迹,但剪切破坏没有主导整体破坏方式,在扁平率为 1.7时抗压强度达到最大. [关键词]隧道工程;扩展有限元法;扁平率;抗压强度;裂纹 [中图分类号]U452 [文献标识码]A [文章编号]1002-8498(2016)11-0080-05 Study on the Effect of Different Flat Ratio on Tunnel Stability Based on Extended Finite Element Method Fan Junli Zhu Zheming (School of Architecture and Enrironment Sichuan Unicersity Chengdu Sichuan 610065 China) Abstract:For tunnels with different flat ratio numerical study on tunnel stability based on extended finite element method (XFEM)was implemented meanwhile tunnel mode experiments were conducted.The pressive strength of tunnel models as well as the initiation and propagation of cracks inside tunnel models is investigated.The results showed that extended finite element method has high degree of accuraey to simulate the initiation location and extension path of cracks for non-crack tunnel models the failure mode is mainly shear failure and the pressive strength of tunnel models es to the largest when flat ratio is 0.9;for tunnel models with a crack the crack propagation path simulated by using extended finite element method agrees very well with the experimental results shear failure...
2015年5月上 施工技术 第44卷第9期 CONSTRUCTION TECHNOLOGY 115 D0l:10.7672/5gjs2015090115 基于强度折减法的格构锚杆边坡治理方案研究 朱卫东 (中铁一局集团有限公司,陕西西安710054) [摘要]定量分析边坡治理方案是保障高边坡治理后稳定性的重要措施.格构错杆作为一种有效实用的边坡加固 措施已广泛应用于高边坡的滑坡治理.结合实际工程,基于强度折减法理论,应用有限元软件ABAQUS定量分析 了错杆长度等关键参数对边坡稳定性、安全系数、位移场的影响规律.研究结果表明,边坡稳定安全系数随错杆长 度增加呈对数方式增长;当错固段长度从8m增至10m时,边坡滑动位移最大值显著增加,边坡抗变形能力明显提 高.研究成果为格构错杆治理方案的参数优化提供理论依据. [关键词]边坡;格构错杆;加固;强度折减法;有限元分析;锚杆长度 [中图分类号]U412 [文献标识码]A [文章编号]1002-8498(2015)09-0115-04 Study on the Slope Treatment Scheme of Anchor Lattice Beam Based on the Strength Reduction Method Zhu Weidong (China Railseay First Group Co.Lid.Xi'an Shaanxi 710054.China) Abstract:Quantitative analysis of the slope treatment scheme is an important measure to ensure the stability of the high slope.As one of the most effective and practical measure of the slope treatment scheme anchor lattice beam has been widely applied in the landslide treatment of high slope.Combining with high slope engineering finite element software ABAQUS and strength reduction method are adopt to investigate the effect of the key parameters of anchor on the slope stability safety factor and displacement field.The research result shows that the slope stability safety coefficient appears a logarithm increase with the growth of anchor bar's length.Moreover while the anchoring length increases from 8m to 10m the maximum sliding displacement of slope increase significantly and deformation resistance of the high slope was improved significantly.Research results concluded...
施工技术 2017年7月下 36 CONSTRUCTION TECHNOLOGY 第46卷第14期 D0I:10.7672/5j52017140036 基于层次分析法的巨柱铝合金模板抱箍体系的研制 张皆科,李厚波,沈耀,毕泽锋 (中国建筑第八工程局有限公司广西分公司,广西南宁530028) [摘要]对巨型型钢混凝土柱铝合金模板加固体系进行了研究,基于层次分析法,从安全性、经济性、耐久性等方面 进行分析.采用BIM绿色施工技术及MIDAS/GEN对巨柱尺寸进行设计及计算,得出最终方案. [关键词]高层建筑:铝合金模板;巨柱抱箍体系;层次分析法;设计;数值模拟 [中图分类号]TU97[文献标识码]A [文章编号]1002-8498(2017)14-0036-03 Development of a Giant Column Aluminum Alloy Hoop System Based on the Analytic Hierarchy Process ZHANG Jieke LI Houbo SHEN Yao BI Zefeng (China Construction Eighth Engineering Dirision Co.Lad.Guangxi Branch Nanning Guangxi 530028 China) Abstract:The aluminum alloy template reinforcement system of giant steel reinforced concrete column is studied based on the analytic hierarchy process and analyzed from safety economy durability and other aspects.The size of the giant column is designed and calculated by using BIM green construction technology and MIDAS/GEN and the final solution is obtained. Key words:tall buildings;aluminum alloy formwork;huge column hoop system;analytic hierarchy process;design;simulation 0引言 铝合金模板一般采用对拉螺杆加固,在超高层 巨柱加固中不适用,研制一种新型巨柱加固体系, 需要解决的问题在于:①巨柱抱箍形式设计;②构 件连接节点构造形式设计;③巨柱铝合金模板加固 体系设计.通过对3个方面的研究分析得出最佳方 图1外框结构巨型型钢混凝土柱 案后对细部尺寸进行设计和相关承载力计算,保证 Fig.1 Giant steel reinforced concrete columns 巨柱铝合金模板加固的顺利开展. at outer tube structure 1工程概况 深业上城(南区)三期工程外框架结构设置了8 巨柱抱箍体系设计包括巨柱抱箍形式设计、构 根型钢混凝土框架柱(见图1),截面尺寸为8m× 件连接节点构造形式设计、铝合金模板加固体系 2.5m~3.5m×1.6m 由于巨柱内部型钢柱及纵向 设计. 2.1巨柱抱箍形式设计 钢筋(最大直径达40mm)的影响,螺杆加固困难,一 层巨柱的加固时间约4d 严重滞后了整个项目 通过查阅资料及讨论,最终确定了2种抱箍形 ...
2015年7月下 施工技术 第44卷第14期 CONSTRUCTION TECHNOLOGY 119 D0I:10.7672/8js2015140119 基于室内试验的橡胶沥青黏度损失性能研究* 冯小伟1 2,张新雨,吴贵贤2 (1.甘肃省道路材料工程实验室,甘肃兰州730050;2.甘肃省交通科学研究院有限公司,甘肃兰州730050) [摘要]通过旋转黏度计得到的180℃表观黏度指标,是表征橡胶沥青性能的最主要指标.通过室内试验在不同的 储存温度、不同的储存时间并考虑静态储存与机械搅拌的情况下,采用Brookfield黏度计以50%扭矩的黏度为标 准,寻找橡胶沥青的黏度在外因条件下的损失变化规律;在对其变化规律进行微观解释的基础上建立了橡胶沥青 黏度随温度及时间变化的模型,从而为橡胶沥青的稳定性储存提供一定的技术参考. [关键词]公路工程:橡胶沥青;黏度损失;性能 [中图分类号]TU526 [文献标识码]A [文章编号]1002-8498(2015)14-0119-04 Viscosity Loss Performance Study on Asphalt Rubber Based on Laboratory Test Feng Xiaowei.2 Zhang Xinyu'.Wu Guixian2 (1.Gansu Road Materials Engineering Laboratory Lanzhou Gansu 730050 China; 2.Gansu Provincial Transportation Research Institute Co.Itd.Lanzhou Gansu 730050 China) Abstract:The apparent viscosity index at I80℃which is obtained by circumvolve viscosity is the most important performance indicators to describe the rubber asphalt.In this paper through indoor experiment with different storage temperature storage time and under the condition of considering the static storage and mechanical stirring Brookfield viseter viscosity was used on the basis of 50%torque of viscosity to look for the rubber asphalt viscosity change rule under the condition of external cause losses.And on the basis of microscopic explanation at rubber asphalt variety regulation a model to represent its viscosity changes with temperature and time was established which could provide certain technical reference for the stability of rubber asphalt storage. Key wor...
2013年11月下 施工技术 第42卷第22期 CONSTRUCTION TECHNOLOGY 19 D0I:10.7672/sgis2013220019 基于多模型集成的绿色施工方案评价方法* 张俊强,周向阳,叶林富 (台州职业技术学院,浙江台州318000) [摘要]绿色施工是建筑节能的一个重要环节,而绿色施工方案的优劣决定了绿色施工的实施效果.因此,可靠的 绿色施工方案评价方法将会促进建筑节能目标的实现.首先构建了多层次的绿色施工方案评价指标体系,在此基 础上,将德尔菲法、层次分析法、模糊综合评价技术和价值工程原理结合起来,设计了多模型集成的绿色施工方案 评价方法.案例研究表明,该评价方法统筹考虑了绿色施工的效果和成本,能有效地把定性评价定量化,评价结果 直观、可靠,具有较好的实用价值,可供绿色施工决策参考. [关键词]绿色施工;多模型集成;价值工程;方案评价 [中图分类号]TU721 [文献标识码]A [文章编号]1002-8498(2013)22-0019-04 Evaluation Method of Green Construction Program Based on Multi-model Integration Zhang Junqiang Zhou Xiangyang Ye Linfu Taizhou Vocational and Technical College Taizhou Zhejiang 318000 China) Abstract:Green construction is an important part of building energy-saving and the characteristics of green construction determine the effect of green construction.Therefore a reliable green construction program evaluation method will help to realize the building energy-saving goals.The paper firstly builds a evaluation index system for green construction program and presents a multi-model integrated method to evaluate green construction program which promises the merits of Delphi method analytic hierarchy process fuzzy prehensive evaluation and value engineering.The case shows that this method overall considers the effect and cost of green construction and can effectively translate qualitative evaluation into quantitative evaluation.The evaluation result is intuitive and reliable.It has a good practical value and would provide decision support fo...
[关键词]垃圾焚烧灰;资源化再利用;复合板墙;力学性能;非线性分析 [中图分类号]TU317 【文献标识码]A [文章编号]1002-8498(2017)06-0083-03 TheResearch ofMechanicalPropertiesoftheCompositeWall BasedonWasteIncinerationAshUtilizationTechnology Xu Weixing,Gao Luheng (Jiangsu Engineering ProfessionalTechnology Instiute,Nantong,Jiangsu226007,China) Abstract;This paper researched physical and mechanical properties of waste incineration ash used as auxiliary cementitious materials of posite lightweight insulation board, including the design, manufacture technology and related properties.According to the rationality design of pound wall, this paper expounded the key points of design,preparation process, the selection of test specimen, choice of test apparatus, test data analysis of the simulation, demostrated fully the feasibility of the application of energy saving posite wall,which provided certain theoretical basis for prehensive utilization of waste incineration ash melting technologies of continuous innovation. Key words:garbage incineration ash;resource recycling; posite wall;mechanical properties;nonlinear analysis 0引言 沫板墙,岩棉板和外装饰彩钢板,所述节能型纤维 随着装配式建筑在国内外快速发展,给工程施增强泡沫板墙采用泡沫剂水溶液、垃圾荧烧灰、水 工带来很大的便捷,施工速度快。
[关键词]地下连续墙;水平位移;日变化量;数值分析 [中图分类号】TU753[文献标识码]A[文章编号〕1002-8498(2015)13-0015-04 NumericalAnalysisBasedonDeformationLawofDiaphragmWalls ZengXiaoyun'.2 (1.College ofWater Conservancy &Architecural Engineering,Shihezi University,Shihezi,Xinjiang 832000,China; 2.CollegeofCiviland Transportation Engineering,HohaiUniversity,Nanjing,Jiangsu210098,China) Abstract:Based on excavation monitoring data, deformation law of the diaphragm wall was analyzed. The amount of day alarm point appears near the excavation face.Based on HS constitutive model,Plaxis was used for monitoring data analysis and numerical simulation of fit degree. The main factors on the daily
Nanjing is H, its diaphragm wall thickness was about 5% H. Key words:diaphragms;horizontal displacement; day variation;numerical analysis 南京市人口愈500万,日客流量在278万人次会打破原有压力平衡,地下连续墙内外土体压力差 左右,为了解决拥堵、拥挤现象,南京市已经完成了值在变化,会造成地下连续墙向外水平位移。