2015年8月下 施工技术 第44卷第16期 CONSTRUCTION TECHNOLOGY 81 D0I:10.7672/sgjs2015160081 建筑垃圾在道路工程领域的研究现状及发展趋势* 文华,李晓静 (西南科技大学土木工程与建筑学晓,四川绵阳621000) [摘要]对建筑垃圾在道路工程领域在国内外研究现状及发展前景进行了详细的述评,指出:建筑垃圾再利用符合 我国可持续发展战略,国内外众多学者对于建筑垃圾在道路工程领域的应用开展了很多研究,并且取得了大量的 研究成果.但是建筑物的结构形式以及建筑等级不同,导致建筑垃圾的种类及强度也不同,因此建筑垃圾中废弃 砖与废弃混凝土的比例以及强度是具有离散性的,然而目前对建筑垃圾的研究大都以某一强度的废弃砖或者废弃 混凝土进行研究,较为单一.而且现有的研究偏重于建筑垃圾作为路用材料的研究,缺乏对建筑垃圾路面结构设 计方面的研究.为了使建筑垃圾在道路工程领域得到更广泛的应用,应加强对不同强度的或者不同材料组成建筑 垃圾的系统研究,同时开展建筑垃圾路面结构设计方面的研究. [关键词]道路工程;建筑垃圾;路面;抗压强度 [中图分类号]U416 [文献标识码]A [文章编号]1002-8498(2015)16-0081-04 Build Slag in Road Engineering Research Present Situation and Development Trend Wen Hua Li Xiaojing College of Civil Engineering and Architecture Southwest University of Science and Technology Mianyang Sichuan 621000 China Abstract:In this paper the authors reviewed in detail build slag in road engineering in internal and external research situation and development prospect and pointed out that build slag recycled with sustainable development strategy in our country;Build slag in road engineering application in the field of the research and application of domestic and international numerous scholars and achieved good social and economic benefits;But the structure of building and construction level is different lead to build slag type and intensity is different also therefore built in the slag waste brick and the proportion of waste concrete as .well as strength is a discrete yet for much of the research to build slag waste brick or waste concr...
2013年12月上 施工技术 第42卷第23期 CONSTRUCTION TECHNOLOGY 53 D0I:10.7672/sgjs2013230053 建筑固体废弃物再生骨料在道路基层中的应用* 赵永柱 (云南建工集团有限公司,云南昆明650000) [摘要]结合昆明长水机场南工作区市政道路4号路路面基层施工,用建筑固体废弃物再生骨料配制水泥稳定层, 代替原设计的水泥碎石稳定层.工程实践表明,采用再生骨料配制的水泥稳定层,在保证道路工程质量的同时,降 低了工程成本,而且处理了建筑垃圾,为建筑垃圾的再生利用开辟了另一条渠道. [关键词]公路工程;路面;固体废弃物道路基层;再生骨料 [中图分类号]TU528 [文献标识码]A [文章编号]1002-8498(2013)23-0053-03 Application of Recycled Aggregate with Building Solid Waste in the Road Base Zhao Yongzhu (Yunnan Construction Engineering Group Co.Lad.Kunming Yunnan 650000 China) Abstract:Based on pavement base construction of No.4 municipal road in the south workspace of Kunming Changshui Airport reeycled aggregate with building solid waste is used to mix cement stabilized base which replaces the cement-aggregate stabilized base designed.Engineering practice shows the cement stabilized base mixed by recycled aggregate can ensure engineering quality of road reduce cost utilize construction waste which opens up a new way for construction waste recycling. Key words:road construction pavement solid waste;pavement base;recycled aggregate 随着城市经济的发展,旧城改造加快,每年产1工程概况 生大量的建筑垃圾,不仅污染土壤、水域、破坏市 昆明长水机场南工作区市政道路B4线道路长 容,还由于其堆放的随意性留下了安全隐患.建筑1100m 道路红线宽50m K00.000一K0 垃圾的再生利用,引起了建设行业主管部门的高度 520.000段机动车道宽24m 辅道左、右侧各7m 重视,并制定了混凝土、砂浆用再生骨料的相关标 K0520.000一K1100.000段机动车道宽16m 水 准,为建筑垃圾的再生利用奠定了基础.目前,建 稳料数量为28000m2 设计厚度48cm.设计要求水 筑固体废弃物再生骨料主要用于配制强度等级低 稳料7d无侧限抗压强度4.5MPa 压实度≥98%,设 的再生混凝土、制作砌块居多.在配制道路基层水 计弯沉值31.91(0.01mm). 稳料方面,在上海、武汉发达地区有工程案例,用再 2配合比 生骨料替代50%的碎石,再掺粉煤灰或石灰,...
施工技术 2012年3月下 48 CONSTRUCTION TECHNOLOGY 第41卷第361期 建筑保护屏在阿布扎比城市之光工程中的应用 刘志良,王冬艳 (北京卓良模板有限公司,北京101300) [摘要]阿布扎比城市之光C10A工程为渐变椭圆造型,采用建筑保护屏作为水平结构施工的外防护体系,在提高 施工工效、确保施工安全、美化施工环境等方面均有很大改善.本工程将建筑保护屏、卸料平台和操作平台一体化 设计,可实现整体安装、整体拆除及整体爬升的功能.本着经济可行的原则,采取了建筑保护屏与传统安全网相结 合的方式来完成整个工程的防护工作.介绍了建筑保护屏的结构和特点,并结合工程实例说明了建筑保护屏的施 工工艺流程及应用情况. [关键词]建筑保护屏;彩钢板;操作平台;卸料平台;一体化 [中图分类号]TU755.2[文献标识码]A [文章编号]1002-8498(2012)06-0048-04 Application of Building Protection Screen in City of Lights in Abu Dhabi Liu Zhiliang Wang Dongyan (Beijing Zulin Formswork Seaffolding Co.Ltd.Beijing 101300 China) Abstract:C10A project of City of Lights in Abu Dhabi is gradual change elliptic shape and building protection screen is used as outer prevention system of horizontal structures which can assure construction safety and beautify construction environment.The protection screen unloading platform and operation platform are designed integrally to assure integral installation demolition and climbing.In order to save cost protection screen bined with safety net is applied to prevent buildings.The characteristics construction process and application situations of protection screen are introduced. Key words:building protection screen;colorful steel plate;operation platform;unloading platform;integration 1工程概况 城市之光项目位于阿联酋首都阿布扎比,是由 官方承建的一个含有80多个分体建筑的建筑楼群. 2009年,该项目一期建设正式启动,该项目中的 C2 C3 C10 C11和C10A这5个楼体采用了建筑保 护屏作为外防护体系并得到成功应用,如图1所示. 本文仅以C10A为例说明建筑保护屏的施工应用 情况. C10A为框架核心筒结构,B3-P7为停车场 (共10层,其中3层为地下结构),L2~L37为标准 图1城市之光 层.停车场层高3.5m 标准...
2013年11月下 施工技术 第42卷第22期 CONSTRUCTION TECHNOLOGY 33 D0I:10.7672/sgjs2013220033 建筑A级保温节能材料对比分析与应用 杜志信 (上海宝冶集团有限公司,上海200941) [摘要]结合国家节能消防政策及相关规范的变革,以及对保温材料选用的限制,参照实际工作经验,介绍了岩棉 板、泡沫玻璃保温板、无机保温砂浆、发泡水泥板、STP超薄绝热保温板等5种保温材料的性能特点及适用范围,并 结合多个节能工程计算实例,指出不同项目、不同结构形式中保温材料的选择,选择合适的保温形式和保温材料能 够取得良好的效果. [关键词]节能;保温;材料;性能;应用 [中图分类号]TU551 [文献标识码]A [文章编号]1002-8498(2013)22-0033-04 Comparative Analysis and Application of.Grade A Insulation and Energy-saving Materials Du Zhixin (Shanghai Baoye Group Co. Ltd.Shanghai 200941 China) Abstract:Combined with the changes of fire protection policy and the relating energy conservation code and the insulation materials selection limit the author introduced the performance characteristics and application scope of insulation materials including rock wool plate foam glass insulation plate inorganic thermal insulation mortar foam cement board and STP ultrathin insulation plate and based on several projects the insulation materials section for different structures are introduced and the results show that the right choice on insulation forms and insulation materials can obtain a good effect. Key words:energy-saving;insulation;materials;performance;application 近年来,随着我国节能工作的不断深人及节能行分析和阐述. 标准、节能政策的不断修改与调整,建筑节能设计、1国家节能消防政策对节能材料选用的限制 建筑保温技术的发展也更重要.但不论是节能设 2009年之前的节能保温市场,比如挤塑板、膨 计还是保温施工技术的发展,都与节能材料的革新 胀聚苯板、发泡聚氨酯等有机保温材料因其保温效 密不可分.建筑节能必须以发展新型节能材料为 果良好、吸水率低、施工方便且相对价格低廉等特 前提,必须有足够的符合国家政策的保温绝热材料 点占据市场绝对优势.不过2009年中央电视台新 做基础.对于各类建筑物而言,安全问题始终是列 址北配楼外保温使用的挤塑板因其可燃性,火势迅 于首位的,而在外保温材...
2011年2月 施工技术 第40卷第4期 CONSTRUCTION TECHNOLOGY 21 广东科学中心建筑节能技术应用 徐天平,易和2,张季超3,徐凯3,陈原3 (1.广东省建筑科学研究院,广东广州510500;2.广东科学中心.广东广州510006; 3.广州大学结构工程研究所,广东广州510006) [摘要]广东科学中心作为广州市21世纪标志性建筑之一采用了多项节能技术,包括自然采光、中庭自然通风与 遮阳技术、围护结构节能、空调系统节能、照明系统节能、太阳能光伏发电站—太阳能风帆、光电幕墙技术,雨水 回海与屋面集水系统等.相比节能标准实施前实现了60%的总体节能率日标,满足绿色施工要求. [关键词]绿色建筑;节能;环保 【中图分类号]TU201.5 [文献标识码]A[文章编号]1002-8498(2011)04-0021-03 Application of Architectural Energy-saving Technology in Guangdong Science Center Xu Tianping' Yi He2 Zhang Jichao' Xu Kai' Chen Yuan' (1.Guangdong Provincial Academy of Building Research Guangzhou Guangdong 510500 China: 2.Guangdong Science Center Guangzhou Guangdong 510006 China; 3.Construction Engineering Institute Guangzhou Unisersity Guangzhou Guangdong 510006 China) Abstract:Some energy-saving and environmental protection technologies were applied in Guangdong Science Center which is one of the landmark buildings in Guangzhou in 21st century ineluding natural lighting atrium natural ventilation and shading techniques energy-saving techniques of extermal enclosure air-conditioning system lighting system solar sailing technology photoelectric curtain wall back to the infiltration and collection system.The results show that the measures for energy saving are valid and meet with the request of energy saving for 60%.The green construction is realized. Key words:green building;energy-saving;environmental protection 广东科学中心作为广州市21世纪标志性建筑 和科技展示的重要建筑,为典型的建筑节能示范工 程(见图1),进行了建筑围护结构节能技术、空调和 采暖系统节能技术、照明系统节能技术、中庭自然通 风...
施工技术 2011年2月 54 CONSTRUCTION TECHNOLOGY 第40卷第4期 工程项目施工模式分析 郭庆军1,赛云秀1,姚科权2 (1.西安工业大学建筑工程学院,陕西西安710032;2.陕西兵器建设盐理咨询有限公司,陕西西安710054) [摘要]通过对我国建筑业工业化模式的分析,得出共生模式是通过技术手段和管理模式来扩大生态效益,达到经 济效益与生态效益的兼顾.结合我国施工模式的发展历程,分析了由传统施工、文明施工、绿色施工和和谐施上模 式组成的施工发展阶段.重点论述了绿色施工和和谐施工的具体内涵,并指出绿色施工是我国现阶段施工的主要 模式,和请施工必然是绿色施工的发展方向. [关键词]施工模式;绿色施工:和谐施工;生态现代化 [中图分类号]TU71 [文献标识码]A[文章编号]1002-8498(2011)04-0054-03 Analysis of Construction Mode on Engineering Project Guo Qingjun' Sai Yunxiu' Yao Kequan2 (1.School of Cioil Engineering and Architecture Xi'an Technological University Xi'an Shaanxi 710032.China; 2.Shaanxi Ordnance Construction Project Management and Consultants Co.Ltd.Xi'an Shaanxi 710054 China) Abstract:Based on the analysis of construction industrialization in our country the symbiotic mode could expand their eco-efficiency by the technology and management.A balance between economic efficiency and ecological benefits is reached finally.Combined with the development history of construction mode in our country the construction steps are concluded which is posed of traditional construction civilized construction green construction and harmonious construction.The meaning of green and harmonious construction are described in detail.Authors have an opinion that nowadays the green construction is main construction mode and the harmonious construction is the development direction of the green construction at last. Key words:construction mode;green construction;harmonious construction;ecological moderniz...
[关键词]工程管理;安全;风险评估;监控 【中图分类号】TU714【文献标识码】A[文章编号]1002-8498(2012)22-0090-05 Dynamic Tracking and Monitoring on the Safety Risk During Construction Zhao Tingsheng,Liu Xianzhi,Tang Jingjing (Sehool of Ciuil Engineering & Mechanics,Huazhong University of Science and Technology,Wuhan,Hubei 430074, China) Abstract: Construction procedures are featured with high quality and safety risks. The time-varying
method for major engineering projects. Based on control theory of project management and continuous improvement of management performance, it was proposed to use expert assessment and the safety risk check list(SRC) for tracking and monitoring safety risk during construction. Dynamic management theory was established for safety risk management in construction,from the three aspects of dynamic monitoring operation mode, organization and procedure and standardiazation of dynamic safety risk assessment. The Wuhan Erqi Yangtze River Bridge was used as a demonstration case for the empirical study of the dynamic tracking and monitoring theory. The results show that the use of dynamic management theory and method successfully controlled the safety risks within a manageable level. No accidents higher than or equal to level general occurred during its construction. Key words:project management; safety;risk assessment; monitoring 0引言现场安全评价,并从安全事故产生的根本原因及影 随着国家法规的引导及安全事故成本的日益响因素、安全文化与安全氨围、安全隐患辨识与监 增大,工程建设施工企业在安全生产上的资金投人控等方面进行了研究。
施工技术 2012年11月上 46 CONSTRUCTION TECHNOLOGY 第41卷第376期 工地定型化施工道路研究与应用 陆建飞,彭建良,邓志峰,夏伟强 (中天建设集团有限公司,浙江杭州320000) [摘要]传统工地临时道路施工资源浪费严重,而工地定型化施工道路具有成本低、工期短、环保、可循环利用等优 点,并且符合绿色施工的要求.结合工程实例,对工地定型化施工道路进行详细介绍,包括施工工艺、施工流程、关 键技术点等,并进行相应的经济效益分析.结果表明,工地定型化施工道路技术措施先进,工艺简单,具有良好的 社会和经济效益. [关键词]绿色施工;施工道路;定型化;施工技术 [中图分类号]TU733 [文献标识码]A [文章编号]1002-8498(2012)21-0046-03 Research and Application of Standardized Construction Site Road Lu Jianfei Peng Jianliang Deng Zhifeng Xia Weiqiang Zhongtian Construction Group Co.Ltd.Hangzhou Zhejiang 320000 China) Abstract:Severe wastes are involved with temporary road construction in traditional construction site.The standardized construction site road has the characteristics of low cost short construction time environmental protection and recyclability and can meet the requirement of green construction.Using actual project as examples the concept of standardized construction site road was introduced including its construction technology construction process and key technology points.Economic benefit analysis was also performed and the results show that the standardized construction site road has good social and economic benefits. Key words:green construction;construction road;standardization;construction 定型化是为保证一定范围内的最佳秩序性,对期工程及佛山岭南天地D地块公寓式酒店项目的 实际或潜在的问题开展标准化的活动,包括制定、工程应用特点,对工地定型化施工道路的施工工进 发布及实施3个过程.传统的工地临时道路施工多行以下总结. 是混凝土整体现浇而成,各种资源浪费严重,不符1.1施工工艺特点 合“低碳经济”的政策导向.而定型化道路在国外 与传统临时道路施工模式相比,定型化施工道 早已大量采用,如日本,在工地的临时道路施工中路有如下特点. 常采用整体的厚钢板作为工地临时道路的路面,并 1)制作工艺简单,原理可靠,便...
施工技术 2012年6月上 78 CONSTRUCTION TECHNOLOGY 第41卷第366期 工具式钢管支模架承载力的理论计算和试验验证 戴震青,潘金炎2 (1.亚太建设科技信息研究院,北京100120;2.江省建筑科学设计研克院,浙江杭州310012) [摘要]针对工具式钢管支模架体系的特点,深人分析了单管承载力的理论计算内容,包括工具式钢管容许承栽力 的计算,以及与中48mmx3.5mm钢管立杆的承载力的比较:详细介绍了工具式单根钢管的承载力试验情况:并重 点探讨了多杆组合的承载力试验,包括支模架试验方案的确定,对试验结果进行了分析和总结.事实表明,工具式 钢管支模架体系具有受力合理、安全可靠、提高工效的特点. [关键词]支模架;钢管;承载力;支撑;理论计算;试验 [中图分类号]TU731.2 【文献标识码]A[文章编号]1002-8498(2012)11-0078-03 Theoretical Calculation and Experimental Verification of Bearing Capacity for Tool-style Tubular Steel Formwork-supports Dai Zhenging' Pan Jinyan' (1.Asia-Pacific Institute of Construction Scitech liformation Beijing 100120.China: 2.Zhejiang Academy Of Building Research Design Hangshou Zhejiang 310012.China) Abstract:Based on the characteristics of tool-style tubular steel formwork-supports the authors analyze the theoretical calculation of bearing capacity with single tube including the calculation of allowable bearing capacity for tool-style steel tube and the parison with 48mm x 3.5mm steel tube pole;the authors introduce bearing capacity test of single tool-style steel tube and discuss bearing capacity test for multi pole assembly including the determination of test scheme for formwork-supports the test results are analyzed and summarized.Facts show that tool-style tubular steel formwork-supports system whose force is reasonable is safe the work efficiency is improved. Key words:formwork-supports;steel pipe;bearing capacity:supports;theoretical calculation;testing 模板支撑架是建筑工程施工中的...
[关键词】模板;工具式;钢结构;托架;研究;应用 [中图分类号】TU755.22 【文献标识码】A [文章编号〕1002-8498(2013)20-0069-04 Research andApplication of Tool-typeHorizontalSteel FormworkBracket Ma Rongquan,Li Dong,Zhao Yajun,Chen Junjie (China Consruction Eighth Engineering Division Co.,Lud.,Shanghai 200122,China) Abstract: Considering the drawbacks of the traditional horizontal formwork support system,such as plex operation, low labor efficiency, waste of the wood joist, high cost and low safety factor, the authors studied a new tool-type horizontal formwork stee support. Compared with the traditional system, this system has many advantages,, such as low labor intensity,high efficiency and conservation of resources. This system has been used in multiple construction projects with remarkable economic benefits and social benefits. Key words;formwork; tool-type; steel structures; bracket; research; application 1研究背景 主、次梁的间距也不同,上述国内外的水平支撑体 水平模板支撑系统是建筑工程施工中量大面 系,均不能按需调整其间距,通用性不强。
2011年11月下 施工技术 第40卷第353期 CONSTRUCTION TECHNOLOGY 83 工具式支撑系统在装配式预制构件安装中的应用 张鹏1,迟锴2 (1.北京市建筑工程研究院有限责任公司,北京100039; 2.北京建工集团有限责任公司总承包部,北京100055) [滴要]介绍了工具式支撑系统的结构特点,讲述了PC-V-GZC系统和PC-H-GZC系统各自的特点及原理.结合工 程实际,详细阐述了其在装配式预制外墙安装、预制飘窗安装和叠合楼板安装的施工工艺和安装要点,重点阐述了 装配式叠合楼板安装早拆施工工艺.工具式支撑系统是装配式结构安装专业化施工的有效尝试,符合住宅产业化 绿色施工的发展方向. [关键词]住宅工程;支撑系统;预制;构件;安装 [中图分类号]TU323 [文献标识码]A [文章编号]1002-8498(2011)22-0083-03 Application of Instrumental Supporting System in Installation of Precast Components Zhang Peng' Chi Kai? (1.Beijing Building Construction Research Institute Co.Lad.Beijing 100039 China; 2.General Contracting Department of Beijing Construction Engineering Group Co. Lid. Beijing 100055 China) Abstract:The structural features of instrumental supporting system is introduced.The characteristics and theory of PC-V-GZC system and PC-H-GZC system are described.Combined with some project construction process and key points of instrumental supporting system in installation of prefabricated external wall precast suspending window and posite floor slabs are introduced in detail.Authors put a focus on the early removal construction technology for posite floor slabs.The attempt for prefabricated structure in instrumental supporting system is effective and can meet the development direction of housing industry and green construction. Key words:houses supporting system;precast;ponents;installation 随着装配式结构施工的逐步推广和安全设计需1.1PC-V-GZC系统 求的不断提高,对预制构件安装施工机具的要求越 PC-V-GZC系统主要包括丝杆、螺套、支撑杆、 来越高,由北京市建筑工程研究院研究开发的工具 ...
2012年5月下 施工技术 第41卷第365期 CONSTRUCTION TECHNOLOCY 79 工具式吊装系统在装配式预制构件安装中的应用 张鹏1,迟错2 (1.北京市建筑工程研究院有限贵任公司,北京100039:2.北享建工集团有限贵任公间总承包都,北京100055) [摘要】介绍了工具式吊装系统的结构特点,讲述了多功能吊运钢柔和通用按驳器及预理件的组成及工作原理. 结合工程实例,阐述了其在装配式预制外墙、预制飘窗、预制楼梯、预制阳台板、预制楼板等构件安装中的应用及吊 装要点,最后得出该工具式吊装系统能够满足不同类型和规格的预制构件吊装需要,加快了施工进度,保证了吊装 施工安全与质量,提高了文明施工程度. [关键词]住宅产业化:吊装系统;预制:安装 [中图分类号]TU758 [文献标识码]A[文章编号]1002-8498(2012)10-0079-04 Application of Instrumental Hoisting System in Installation of Precast Components Zhang Peng' Chi Kai (1.Beijing Building Construction Research Institute Co.Lad.Beijing 100039.China: 2.General Contracting Department of Bejing Construction Engineering Group Co.Iad.Beijing 100055 China) Abstract:The structure characteristics of instrumental hoisting system are briefly introduced.The position and work principles of multifunctional hoisting beams mon connector and embedded parts are obtained.Combining with the project examples installation application and hoisting points of ponents including precast external walls precast suspending windows precast stair precast balcony precast floor are described.The instrumental hoisting system can meet the hoisting requirement of different kinds of ponents.The construction progress is accelerated the hoisting safety and quality are ensured and the civilized construction is obtained. Key words:residence industrialization;hoisting system;precast;installation 近年来,我国住宅产业化建设进入了一个快速发的工具式吊装系统是一种通用性强、成本低、安 发展时期,伴随着装配式结构施工对安全设计需求全可靠、拆装便捷、施工管理方便的装配式预制构 的不断提高,预制构...
2016年7月上 施工技术 第45卷第13期 CONSTRUCTION TECHNOLOGY 41 D0I:10.7672/5j52016130041 基坑工程降水回灌适宜性分级研究 王国富,唐卓华,李罡,路林海,徐帮树2 (1.济南轨道交通集团有限公司,山东济南250101;2.山东大学土建与水利学院,山东济南250061) [摘要]基坑工程开挖前后采用的降水措施除易使地下水资源短缺程度加剧外,还易使地层土体发生变形,危及邻 近建筑物的安全.回灌是把抽出的地下水回补到地下含水层,既有利于补充地下水资源,又有利于控制因降水引 发的土体变形,可最大限度地减少降水对邻近建筑物的影响.以回灌水质、建筑物距离基坑远近、风险损失等级、 含水层透水性以及基坑降水量与含水层储水量之比为评价指标,利用矩阵评价法对基坑降水回灌的适宜性进行了 分级,结果表明:矩阵评价法可以有效地评价深基坑开挖的回灌适宜性. [关键词]地下工程:深基坑:回灌:分级;矩阵评价法 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)13-0041-04 Suitability Classification of Groundwater Recharge in Deep Foundation Excavation Wang Guofu' Tang Zhuohua' Li Gang' Lu Linhai' Xu Bangshu2 (L.Ji nan Rail Transit Group Co. Lid. Ji'nan Shandong250101 China;2.School of Civil Engineering Shandong University Ji'nan Shandong 250061 China) Abstract:Dewatering in deep foundation excavation may intensify the shortage degree of groundwater resource as well as to cause the deformation of strata and endanger the safety of adjacent buildings.In deep foundation excavation project recharge that is inject the pumped groundwater into aquifer it could be helpful to supplement the water resource control the strata deformation and decrease the dewatering influence on adjacent buildings.Taking recharge water quality the distance between buildings and foundation excavation grade of risk loss aquifer permeability and the ratio of foundation excavation dewatering amount and aquifer water capacity as evaluation index suitability of groundwater recharge in deep foundation excava...
施工技术 2011年10月上 58 CONSTRUCTION TECHNOLOGY 第40卷第350期 基坑围护桩水平位移特性研究 禹建兵 (湖南省有色地质查局二四七队,湖南长沙410015) [摘要]在实际基坑工程中,使用大型有限元软件PLAXIS对基坑开挖阶段支护结构变形特性进行了分析,对开挖 时围护桩的水平位移变化进行了分析并得出结论:施加预应力对围护桩位移影响较大,是控制围护结构的一种较 为有效的方法;而使用Hardening-soil模型进行分析时,可以更好地描述土体卸载特性,结果也更准确. [关键词]地下工程;基坑;围护桩;位移;有限元分析 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2011)19-0058-03 Study on Horizontal Displacement of Foundation Enclosure Pile Yu Jianbing (Hu'nan Geological Mining Orgnization for Non-Ferrous Metals 247team Changsha Hu'nan 410015 China) Abstract:In foundation excavation engineering author adopts finite element software PLAXIS to simulate the deformation of supporting structure of some deep foundation excavation stage and draw a conclusion that prestressing has a greater impact on displacement of pile enclosure which is a more effeetive way to control the envelope.Using Hardening-soil model analysis to describe the characteristics of the soil unloading is better and the results are more accurate. Key words:underground;excavation;retaining piles;displacement;finite element analysis 基坑开挖引起的地表位移与变形是多种因素~可塑状粉质黏土(局部淤泥质土)夹少量砖瓦、碎 耦合作用的结果,采用常规分析方法很难反映诸多石等组成,局部为原地面耕植土,碎块含量不均,一 因素的影响,而有限元法是分析基坑变形的一种行 般为10%~20%,结构松散,局部含有机质.该层 之有效的方法.结合长沙市某住宅小区基坑工程分布不稳定,局部缺失,厚0.80~3.80m.②.粉质 实例,使用有限元软件PLAXIS模拟分析基坑开挖 黏土流塑,高压缩性.切面稍有光泽,干强度中 过程中围护桩产生的水平位移的变化状况,分析了 等,韧性中等.土质不均,局部分布.顶板埋深 施加预应力和不施加预应力状态下位移的变化情 1.30~3.40m 层厚0.60~2.30m.②-2淤泥质土 况,以及使用Hardening-soil模型时位移的变化 饱和,流塑,高压缩性.无摇振反应,刀切面稍有光 情况. 泽,干强度和韧性中等偏低.局部夹薄层粉土、粉 1工程概况 砂.灵敏度平均值S =3.29 属中灵...
[关键词]环形节点板;钢管;有限元分析;承载力;试验 [中图分类号]TU392 [文献标识码】A [文章编号】1002-8498(2014)02-0066-04 Full-scaleExperimentalStudyonSteel TubularJoints AssociatedwithAnnularGussetPlate Chen Jian',Hu Wenkan²,Guan Shijie²,Chen Yong,Shen Guohui (1.Zhongda Real Estate Group Co.,Ltd.,Hangzhou,Zhejiang 310003,China;2.Zhoushan Qiming Electric Power Design Co.,Ld.,Zhoushan,Zhejiang 316021,China;3.College ofCivilEngineering and Architeture,Zhejiang Univesity,,Hangzhou,Zhejiang 310058,China) Abstract:To gain insight into the mechanical behavior of the tubular joint associated with annular gusset plate,the studies on bearing capacity are conducted.Total 4 specimens classified into two specifications are designed and manufactured, and the full-scale experimental studies on the bearing capacity of press and tension are conducted. The finite element models are setup, whereby a nonlinear finite element analysis (FEA) is pleted. The numerical FEA results are pared with both experimental results and those puted according to the Chinese codes.A good agreement is observed between the FEA and experimental results,whereas the bearing capacity puted according to the codes is rather smaller. Key wordsannular gusset plate; steel tubular;finite element analysis;bearing capacity; test 插板节点是钢管节点的一种主要形式,另外还用在插板上,然后通过螺栓传递到环形板,并最终 有工艺相对复杂的相贯焊形式节点,近期还出现了作用于主管上。
主管与环板通过外部焊缝连接,因 球节点。
本文针对新型的环形无肋钢管节点,设计此不影响主管承载力。
并制作了X形足尺试验模型,对节点在支管轴向荷 载下的拉压承载力进行了试验研究。
并将试验结 环形节 果与理论分析进行了对比。
研究成果有助于环形 加肋型钢管节点的承载力研究。
1节点试验 如图1所示,环形板焊接在主管壁上,而支管则 支管 通过插板和环形板相连接,因此支管上荷载首先作 图1环形节点板的三维示意 *浙江省电力公司科技项目(zdk023-2011) Fig.1 3D of the annular gusset plate [作者筒介]陈健,高级工程...
[关键词】地下工程;深基坑;BP神经网络;R/S分析 [中图分类号】TU753[文献标识码]A[文章编号]1002-8498(2015)13-0056-04 ResearchonDeformationPredictionsofFoundationExcavationBasedon BPNeuralNetworkandImprovedtheRoleofR/SAnalysisMethod Pang Jiancheng',Long Ran²,Ma Jiao (1.Wuhan Huazhong Geotechnical Engineering Co.,Lid.,Wuhan,Hubei 430023,China;2.CCCC Second Highway Consultants Co.,Lud.,Wuhan,Hubei 430056,China;3.School of Earth Sciences, China University of Geosciences,Wuhan,Hubei430074,China) Abstract:In this paper, an improved BP neural network and R/S analysis method on trends of foundation excavation deformation were studied.Firstly,the difference between the cubic spline was used for Finally,R/S analysis of all samples foundation excavation deformation trends judgment was used,and pare the results of BP neural network and R/S analysis. The results showed that BP neural network and speed-resulting sequence of R/S analysis have basic agreement,deformation has continued increasing trend,but the rate of increase has a reduced tendency to prove the applicability of the R/S analysis to trends of the foundation excavation deformation. Key words:underground; deep foundation excavation; BP neural network;R/S analysis 0引言得很好的效果;徐寒等利用卡尔曼滤波法处理基坑 由于基坑工程常位于城市人口稠密、周围建筑监测数据,证明该方法在基坑变形预测中的有效 的工程事故。
施工技术 2016年10月上 30 CONSTRUCTION TECHNOLOGY 第45卷第19期 D0I:10.7672/5j52016190030 基于支持向量机的膨胀土深基坑变形预测研究 渠孟飞,谢强,李朝阳,贺建军 (西南交通大学地球科学与环境工程学院,四川成都610031) [摘要]以成都东郊某深基坑支护结构的水平位移值为研究对象,研究基于基坑监测数据的基坑变形预测对施工 的指导意义.分析预测结果表明,对于本基坑,工况未发生改变时,未来1~5周预测精度非常高,预测值可作为预 估值指导施工;工况变化时未来1~5周位移值的预测精度较低,需不断加入新近监测数据才能取得较好的预测精 度.最后指出,基坑位移的预测必须建立在对前期实测曲线严格分析的基础上,工况发生改变时的一段时间内应 密切关注监测数据的发展趋势,预测值仅供参考. [关键词]深基坑;位移:预测:支持向量机 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)19-0030-03 Prediction of Slope Displacement of Deep Foundation Excavation Based on Support Vector Machine Qu Mengfei Xie Qiang Li Zhaoyang He Jianjun Faculty of Geosciences and Environmental Engineering of Southwest Jiaotong University Chengdu Sichuan 610031.China) Abstract:Taking the horizontal displacement of deep foundation excavation which located at east of Chengdu as the study object the guiding significance of prediction results based on the previous monitor data is studied.The prediction results indicate that when the working condition unchanged the accuracy is very high for predicting the next 1 to 5 weeks displacements.When working condition changed the prediction accuracy of the model is lower for predicting the next 1 to 5 weeks displacements only the new monitor data was input into the model the accuracy can raise.Therefore the prediction work must be carefully used when working condition changed and it must be built on analyzing the monitoring curves in early stage. Key words:deep foundation excavation;displacement;prediction;support v...