[关键词]SMW工法桩;水泥土;无侧限抗压强度;干密度;淤泥质黏土;试验;研究 [中图分类号]U451[文献标识码】A[文章编号]1002-8498(2017)08-0041-05 Experimental Study onSoil-cementStrength ofSMWMethod Pile in GuangdongRiver Alluvial Geology ZHENG Zhongyuan',HE Chunbao',ZENG Xiangyue',MAI Jiazhu',LIANG Zihao', WANG Jinlong²,XIE Yiyang? (1.CollegeofWater Conserancy and Civil Enginering,SouthChinaAgriculturalUniversity,Guangzhou,Guangdong 510642,China; 2.Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071, China; 3.Dongguan Huake Architectural Technology Co.,Lud.,Donguan,Guangdong 523123,China) Abstract : In order to study the quality of SMW method pile in Guangdong river alluvial geological mucky clay soil and fine sand, the strength and dry density of soil-cement on site is measured. Changing three kinds of water-cement ratio and four kinds of cement content for specimens in laboratory,and unconfined pressive strength at 28, 60, 90d and 120d are measured. The results show that the most suitable water-cement ratio of mucky clay soil-cement and fine sand soil-cement is 1.5.The highest strength of mucky clay soil-cement is cement content 18% and fine sand soil-cement is cement content 15%.The bination mechanism of fine sand and cement is similar to cement mortar, increaseing with the increase of sand-cement ratio. The strength of soil-cement grows along with the curing time and increases obviously after 28d in the optimum cement content. Soil-cement dry density exists a positive correlation with press...
2010年11月 施工技术 第39卷第11期 CONSTRUCTION TECHNOLOGY 51 工业厂房设备基础改建项目设计与施工 樊胜军1,李慧民,蒋红妍,刘振江2 (1.西安建筑科技大学土木工程学院,陕西西安710055;2.温州市第二建 筑安装工程有限公司,浙江温州325000) [摘要]以西安建筑科技大学东校区原1 2号厂房基础改造项目为研究背景,针对不同形式的设备基础,采用包括 植筋技术在内的不同处理方法,将原有设备基础改造为教学楼基础.解决了旧设备基础改造再利用过程中的关键 问题. [关键词]工业厂房;设备基础;植筋技术;基础改造 [中图分类号]TU528 [文献标识码]A [文章编号]1002-8498(2010)11-0051-03 Design and Construction of Equipment Foundation in Industrial Building Reconstruction Project Fan Shengjun' Li Huimin' Jiang Hongyan' Liu Zhenjiang㎡ (1.Department of Civil Engineering Xi'an University of Architecture and Technology Xi'an Shaanxi 710055 China; 2.Wenzhou Second Construction and Installation Engineering Co.Ltd.Wenzhou Zhejiang 325000 China) Abstract:Based on the original No.1 2 industrial building foundation reconstruction project which located at the east campus of Xi'an University of Architecture and Technology the authors use different methods including planting steel bars technology for the different forms of basis equipment to change the basis from the original device to academic buildings.It can solve the key problems in the process of the old industrial building foundation reconstruction project. Key words:industrial building;equipment foundation;planting steel bars technology;foundation reconstruction 在建筑物基础改造工程中,可运用升浆加固、托换、凝土柱与钢梁(无屋面板)组成的混合结构,框架柱纵 高压喷射注浆等方法将原有基础进行加固,提高其承载 向间距12m 横向间距4 5.4 5.5 6 7.5m不等,此部 力.但对于原有设备基础的改造,这些方法存在实际应 分属于新建部分;基础采用桩径800mm的人工挖孔灌 用少,理论不成熟、成本高、工期长等缺陷.本文针对西 注桩,单桩单柱,中心相同,柱尺寸为600mm×600mm 安建筑科技大学东校区原有厂房基础的特点...
施工技术 2011年1月 16 CONSTRUCTION TECHNOLOGY 第40卷第1期 工业化生产与信息化施工 焦安亮,严晓新,黄延铮,闫亚召 (中国建筑第七工程局有限公司,河南郑州450004) [摘要】在当今工业信息化进程中,建筑业的工业化生产和信息化施工是动生产力发展的必然趋势.阐述了工业 化生产和信息化施工的概念和优势,论证了工业化生产和信息化施工的可行性,分析了我国现阶段工业化生产和 信息化施工尚存在的问题,最后指出工业化生产和信息化施工是目前和今后一段时间应该努力的方向. [关键词]建筑业:施工技术;工业化;信息化;机械化;自动化;现代化 [中田分类号]TU71[文献标识码]A[文章编号]1002-8498(2011)01-0016-03 Industrial Production and Informational Construction Jiao Anliang Yan Xiaoxin Huang Yanzheng Yan Yazhao China Construction Seventh Engineering Dirision Co.Ltd.Zhengzhow He'nan 450004 China) Abstract:In the industrial informatization proceedings building's industrial production and informational construction is an inexorable trend for the productivity development.Firstly the concept and advantages of industrial production and informational construction are introduced.Secondly its feasibility and problems during this present period in our country are also analyzed.Finally authors point out industrial production and informational construction are our direction and have a long time to be realized. Key words:building industry;construction technology;industrialization;information;mechanization; automation;modernization 人类社会的进步归根结底取决于社会生产力的将建筑构配件在施工现场组装成整个建筑的施工方 发展.在科学技术突飞猛进的时代,科学技术的发法,是整个建筑施工的后一阶段. 展及其在生产中的广泛应用,对社会生产力的发展 从事工程建设的业内人士对采用传统施工方法 起着重要的作用.所以,通过实现工业自动化来推进行工程建设存在的诸多问题都有深切感受:现场 动生产力的发展是当今世界的一种必然趋势.在当 施工条件差、管理难度大,工程质量难以保证,施工 今工业现代化的进程中,如何实现建筑业的现代化安全事故频发,现场建筑材料和水、电资源浪费严 是摆在建筑业同行面前的一个课题,只有通过 重,而且产生大量的建筑垃圾;随着经济发展,我国 工业化生产,信息化施工之路才能实现. 逐步进入老龄化社会,熟练和...
2011年10月上 施工技术 第40卷第350期 CONSTRUCTION TECHNOLOGY 111 工业化住宅预制构件深化设计流程及要点分析 李浩,李永敢 (中建一局集团建设发展有限公司,北京100102) [摘要]对现阶段及理想状态的预制构件深化设计流程进行了阐述与分析,提出了现阶段深化设计流程主要存在 的弊病.结合长阳半岛工业化住宅项目,从建筑专业,设备专业,施工需求,生产需求等几个方面对深化设计要点 进行了分析.详细介绍了叠合板综合管线排布设计与施工吊装就位时起吊点位置及起吊方式的选择. [关键词]工业化住宅;预制构件;深化设计 [中图分类号]TU756.4 [文献标识码]A [文章编号]1002-8498(2011)19-0111-04 Detailed Design Process and Analysis of Essentials of Precast Element in Industrialized House Li Hao Li Yonggan China Construction First Dipision Group Construction Development Co.Lid.Beijing 100102 China) Abstract:Author expounds and analyzes detailed design process of precast element at present and in idea state proposes malady in detailed design process.Based on engineering practice of industrialized house in Changyang Peninsula author analyzes key points of detailed design from architecture specialty facility specialty and construction requirement and production requirement.Meanwhile author introduces pipeline arrangement with laminated slab as well as selection of hoisting way and points. Key words:industrialized house;precast element;detailed design;design process;design points 中粮万科长阳半岛工业化住宅是目前北京市 业主需凉 在建的装配化率最高的项目,采用装配式剪力墙结 构,运用了预制外墙板、预制阳台、预制叠合板、预 设计要求 施工求 制飘窗、预制楼梯、预制装饰板六类预制构件. 放专 业 安需求 植求 1现阶段预制构件深化设计流程 化设起 化设计纸 预制构件深化设计是工业化住宅实施关键环 节,也是工业化住宅优于传统住宅最集中的体现, 材料 进播界 接头 板这分需轻再产 集合了不同专业需求.目前北京万科工业化合同 生产 模式下的构件深化设计主要由万科作为设计牵头 人,构件厂作为设计人,构件深化设计集中由构件 图1现阶段深化设计流程 厂完成,即万科提供预制构件设计院设计方案,然 Fig.1 Detailed design process at present 后要求与预制构件相关的各参与方分别提出各自 牵头人,其对各...
施工技术 2012年9月上 78 CONSTRUCTION TECHNOLOGY 第41卷第372期 对《建筑施工扣件式钢管脚手架安全技术规范》 JGJ1302011中满堂支撑架计算的解析 张文友,徐华荣,黄红政,赵济生 (江苏中兴建设有限公司西南公司,重庆400020) [摘要]在新规范中满堂支撑架内容是个新课题,架体立杆稳定性计算分顶部立杆段和底部立杆段,计算中采用的 系数较多.通过有代表性的演算,详细介绍了满堂支撑架立杆的计算长度,立杆稳定性受力计算,用减小立杆间距 的做法计算立杆的稳定性;对如何应用计算系数,以及对不同荷载选择相应的支撑架进行了对比分析,总结出一些 计算中需注意的问题和建议. [关键词]脚手架;支撑架;计算系数;规范;稳定性 [中图分类号]TU731.2[文献标识码]A [文章编号]1002-8498(2012)17-0078-03 Understanding of the Calculation of Full Hall Formwork Support in Safety Specification for Fastener-type Steel-tube Scaffold in Architecture Construction JGJ130-2011 Zhang Wenyou Xu Huarong Huang Hongzheng Zhao Jisheng (Southwest Branch of Jiangsu Zhongxing Construction Co.Ltd. Chongqing 400020 China) Abstract:Full hall formwork support was added in the new code.Stability calculation for upright stanchions of the support involves dividing the stanchion into top segment and bottom segment and their stabilities are calculated separately.Many coefficients have been adopted in the calculation.Through typical demonstrations the authors introduced the calculation length of full hall formwork support the stability check for upright stanchion calculation of the stability of upright stanchions by reducing the intervals.The authors also discussed on the use of the coefficients pared different types of full hall formwork supports when subjected to different loads.At last problems that should be concerned in mind were summarized and suggestions were made. Key words:scaffolds;supports;calculating coefficient...
2015年2月下 施工技术 第44卷第4期 CONSTRUCTION TECHNOLOGY 107 D0I:10.7672/5j52015040107 寒冷地区既有居住建筑围护体系节能改造方案研究* 郑武幸,杨柳,句德胜2,刘士龙2,张卫华 (1.西安建筑科技大学建筑学院,陕西西安710055;2.河北省建筑科学研究院,河北石家庄050021) [摘要]我国寒冷地区既有居住建筑存量大、能耗高,各地区之间也存在差异.为完成国家“十二五”制定的节能改 造计划,需要制定因地制宜的既有居住建筑围护体系节能改造方案.为此,对能耗较高的典型地区进行了大量的 实地调查研究,得到了4个城市的既有居住建筑能耗,针对围护结构现状,提出了7种适合于不同时期居住建筑围 护体系节能改造的方案,对方案的节能性、经济性和适用性进行了分析计算,以期为寒冷和严寒地区围护体系节能 改造工作的全面展开提供参考. [关键词]围护体系:居住建筑;建筑能耗;节能改造方案:效益 [中图分类号]TU201.5 [文献标识码]A [文章编号]1002-8498(2015)04-0107-04 Energy-efficiency Renovation Proposals of Building Envelope of Existing Residential Buildings in Cold Zone of China Zheng Wuxing' Yang Liu' Ju Desheng? Liu Shilong? Zhang Weihua' (1.School of Architecture Xi'an Unirersity of Architecture and Technology Xi'an Shaanxi 710055 China; 2.Hebei Academy of Building Research Shijiazhuang Hebei 050021 China) Abstract:Both the number and amount of energy consumption of existing residential buildings in cold zone of China are large and they are quite different among each region.In order to fulfill the target of building energy-efficiency renovation made in 12th 5-year Plan renovation proposals of building envelope of existing residential buildings adjusting to local conditions should be developed.Therefore measures of filed surveys and research were conducted in a typical region with high building energy consumption in cold zone of China;the amount of energy consumption of existing residential buildings in 4 cities were obtained and 7 proposals of building energy-effi...
[关键词]地基;边坡稳定性;强度折减法;安全系数;有限元分析 [中图分类号】TU43;TU753 [文献标识码】A [文章编号]1002-8498(2013)23-0101-03 StudyonStabilityforPuddleBackfillSlope Han Yunshan',Yang Yinwang²,Dong Yanli',An Ming²,Shen Guangning (1.Department of Civil Engineering,NorthUniverity of ChinaTaiyuan,Shanxi030051,China; 2.Shanxi Mechanisation Construction Group Company,Taiyuan,Shanxi 030009,China) Abstract;Based on the stress analysis, the finite element method for slope stability can meet the force equilibrium condition when considering the stress and strain relationship of the material. The FEM for slope stability can make the putation results much more accurate and reasonable. The stability of high-illed ramming slope inapower plant is investigated in this paper using strength reductionmethod with nonlinear finite element.It is can be drawn out that the design of the slope is safe and reliable from the numerical results. The effect of the slope ratio on the stability is also studied in this paper. The relationship between the safety factors and slope ratio is obtained by puting the safety factors considering the change of the slope ratio.Finally,theeffctof the slope fomon the stabilityisanalyzed. Key words;subgrade;slope stability; strength reduction method; safety factors;finite element analysis 对于边坡稳定性分析,我国目前常用方法是建1工程概况 立在极限平衡理论基础上的条分法,包括瑞典圆弧贵州某电厂厂坪自然地面标高1015.000~ 法、简化Bishop法(1和Morgensterm-Price法[2-3]等。
施工技术 2013年5月下 100 CONSTRUCTION TECHNOLOGY 第42卷第10期 D0I:10.7672/sgjs2013100100 多项目并行施工进度控制技术 王雪艳,张超晖2,胡长明3,张礼奎2,刘凯3 (1.西安建筑科技大学华清学院,陕西西安710043;2.陕西煤业化工建设(集团)有限公司, 陕西西安710021;3,西安建筑科技大学土木工程学院,陕西西安710055) [摘要]介绍了平行工序排序的基本实施过程,并以大明宫遗址公园宫门宫墙工程为例,针对该工程工期紧、需要 边设计边施工的特点,采用平行工序排序技术对其原始网络图进行优化,优化结果表明:在工程总工期少许推迟的 情况下,各道宫墙施工的最迟必须开始时间均向后推迟,可为该工程的设计与施工的准备工作提供充足的时间,从 而使得该工程边设计边施工的管理模式得以实现. [关键词]项目管理;运筹学;平行工序;进度控制 [中图分类号]TU-923 [文献标识码]A [文章编号]1002-8498(2013)10-0100-05 Progress Control Technology for Parallel Construction of Multiple Project Wang Xueyan' Zhang Chaohui2 Hu Changming' Zhang Likui Liu Kai' (1.Huaging College Xi'an University of Architecture and Technology Xi'an Shaanxi 710043 China; 2.Shaanxi Coal Chemical Industry Construction Group)Co. Ltd.Xi'an Shaanxi 710021 China; 3.College of Civil Engineering Xi'an University of Architecture and Technology Xi'an Shaanxi 710055 China) Abstract:The basic implementation procedure of parallel processes sorting technology is introduced. Taking Daminggong National Heritage Park project as an example considering that this project had a tight construction schedule which required synchronization of the design and construction the project network was optimized using the parallel processes sorting optimization technology.As a result of the optimization the latest construction start time of all palace walls can be postponed with only minor delay to the overall construction period.This provides sufficient time for the project design and construction p...
[关键词】施工技术;滑移:顶推滑移:纠偏:应急预案 [中图分类号]TU758.11【文献标识码】A[文章编号]1002-8498(2011)16-0026-04 ApplicationofMulti-orbitsandUnequal-elevation SynchronousSlipTechnologyatBeidaiheRailwayStation Gao Ling',Wu Weljie²,Bi Qinghuai²,Huang Lishun² (1.Education and Technology School,Zhejiang University of Technology,Hangzhou,Zhejiang 310014,China; 2.Zhejiang Jinggong Stel Building Co.,Lad.,Shaoxing,Zhejiang 312030,China) Abstract;Based on the engineering practice for reconstruction project of existing awning in Beidaihe Railway Station,bined with characteristics of structure and reconstruction requirement, design of crawl device pushing-slip point and following point are introduced.The concrete steps and unloading measures after the truss location are introduced. Meanwhile, the control of synchronism,restituted deviation and emergency plan in the process of slip are expounded in detail. Moreover,the application of puter for slip control of synchronism is useful for the slip installation. Key words:construction; slip; pushing-slip; deviation correction; emergency preplan
1工程概况脚处布置液压爬行器,将桁架沿站房一侧滑移 北戴河火车站位于秦皇岛市北戴河区北郊,是6.7m。
2014年5月上 施工技术 第43卷第9期 CONSTRUCTION TECHNOLOGY 11 D0I:10.7672/5j52014090011 复杂造型建筑结构设计优化与施工* 张振兴,刘宁波,何伟,雷晓勤,曹阁,王旭 (中建三局建设工程股份有限公司成都分公司,四川成都610041) [摘要]成都华置广场裙楼拥有独特的建筑造型与复杂的结构布置.针对具有复杂造型的建筑,介绍了有特色部 分的结构设计、混凝土结构施工、复杂节点设计、型钢混凝土组合结构起拱等,提出了一些合理的设计优化与施工 措施,保证了结构与建筑成型符合设计意图. [关键词]结构设计;复杂结构;预起拱;优化;建筑造型 [中图分类号]TU318 [文献标识码]A [文章编号]1002-8498(2014)09-0011-05 Structural Design Optimization and Construction of Complex-shape Building Zhang Zhenxing Liu Ningbo He Wei Lei Xiaoqin Cao Ge Wang Xu Chengdu Construction Company of China Construction Third Engineering Co.Lad. Chengdu Sichuan 610041 China) Abstract:The podium of Chengdu Huazhi Square has special architectural style and plex structure layout.Based on architecture with plex style this article mainly describes distinctive structural design concrete structure construction plex joint design pre-arch for steel reinforced concrete posite structure proposes some ideas for design optimization and construction through which the structure and architectural design intent is ensured. Key words:structural design;plex structure;pre-arch;optimization;architectural style 1工程概况 成都华置广场设有4栋塔楼、6层裙楼.裙楼 地上建筑面积5.7万m2 单层建筑面积1.2万m2. 建筑设计具有大空间、高净空、流线形等特点(见图 1).结构设计为满足建筑需求,设计层高高、柱截 面小、梁跨度大、单层面积大且层层转换,具体表现 为:层高6.45m 中庭净高约26m 柱截面d800~ 1200mm 梁跨度18~28m 在每层均设有转换柱及 转换梁. 2结构沉降分析与监控 2.1概况 结构设计时,考虑塔楼与裙楼的不均匀沉降, 地下室部分位置设置了沉降后浇带.地下室顶板 图1建筑效果示意 Fig.I The architectural effect 以上由于裙楼结构复杂,各楼层结构布置变化多, 仅在裙楼与塔楼之间设置了沉降缝,裙楼内部无法 外的附加内力,如何尽可能消除沉降差带来的内力 设置从上至下贯通的沉降后浇...
施工技术 2011年4月上 30 CONSTRUCTION TECHNOLOGY 第40卷第338期 复杂环境条件下深基坑综合支护技术的应用 朱永清 (山西四建集团有限公司,山西太大原030012) 【摘要]某深基坑工程周边环境复杂,基坑两侧距离城市道路主干线只有3m 放坡距离小;另外两侧埋有上下水管 道和热力管道,不能放坡.施工中按深度采取上下两种支护方法,上部土钉支护、下部采用,铺支护;同时充分利 用场地,在可以放坡的两边进行放坡,减少挖方量.采用深层搅拌桩止水椎幕,降水采用坑内管井密布降水井疏干 地层水的方式.工程实践表明,通过采取该综合支护技术,取得了较好的支护效果. [关键词]深基坑;土钉支护;桩铺支护;止水椎:降水并 [中图分类号]U753.3 [文献标识码]A [文章编号]1002-8498(2011)07-0030-04 Application of Comprehensive Bracing Technique Used in Deep Foundation in Complicated Environment Zhu Yongqing China Shanzi Sijian Group Co.Ltd.Taiyuan Shanxi 030012 China) Abstract:The surrounding environment of some deep foundation is plex.The distance between two sides of the foundation and urban road is just 3 meters while there are water pipe and thermal pipeline buried in the other sides.Comprehensive bracing technique as soil nail support used in upper part and pile anchor support used in lower part while putting slop in suitable place to reduce excavation quantity is adopted.Waterproof curtain of deep mixing pile and densely covered wells for precipitation are adopted. Engineering practice shows that good effect is obtained according to the prehensive bracing technique. Key words:deep foundation;soil nail support;pile anchor support;waterproof curtain precipitation well 1工程概况 8.26m(c=19.2kPa =21.5);③粉质黏土平均 某工程为一类人防工程,地下2层,剪力墙结厚度为10.39m(c=29.5kPa =18.6°);④粉质黏 构,基坑开挖深度12.8~15.3m 南北长116m 东西土平均厚度为9.21m(c=31kPa =18.1°). 宽90m.基坑东、南侧距离道路红线均为3.0m;西 地下水类型为孔隙潜水,大体径流向为自东向 侧20m处有地下1层人防工程及地上2层建筑,基西,主要补给来源为侧向...
施工技术 2017年7月上 46 CONSTRUCTION TECHNOLOGY 第46卷第13期 D0I:10.7672/8js2017130046 复杂环境下单支点内支撑结构力学变形特性研究* 汪中林1,肖桃李12,程成1,何云龙,黄梅 (1.长江大学城市建设学院,湖北荆州434023;2.长江大学岩土力学与工程研究中心,湖北荆州434023) [摘要]针对土质差开挖深度大且环境复杂的城市基坑工程,探索单支点内支撑式围护结构的可行性,采用 MIDAS GTS NX有限元软件,建立内支撑式排桩支护结构分析模型,重点研究排桩和支撑系统的内力及变形规律, 结合现场监测数据,验证了复杂环境下单支点内支撑结构的安全性.研究结果表明:排柱呈现“鼓肚型”的变形特 点,最大位移值约为开挖深度的0.13%,最大弯矩作用点约为开挖深度的0.79倍;冠梁最大位移位于每侧中部,支 撑轴力的监测值与理论值基本一致. [关键词]基坑:内支撑;数值模拟:变形;研究 [中图分类号]TU470 [文献标识码]A [文章编号]1002-8498(2017)13-0046-04 Study on Mechanics and Deformation Characteristic of Internal Support Structure with Single-support in Complex Environment WANG Zhonglin' XIAO Taolil.2 CHENG Cheng' HE Yunlong' HUANG Mei' (1.School of Urban Construction Yangtze Unirersity Jingzhou Hubei 434023 China; 2.Rock and Soil Mechanies Engineering Research Center Yangtze University Jingzhou Hubei 434023 China) Abstract:In view of the city foundation excavation engineering with poor soil quality large excavation depth and plex environment to explore the feasibility of supporting structure with single-support this paper used MIDAS GTS NX finite element software established the analysis model of internal supporting- pile structure mainly studied the internal force and deformation law of row piles and supporting system bined with field monitoring data verified the security of the internal support structure with single- support in the plex environment.The research results show that the row of piles presented deformation characteristics of‘drum...
【关键词】复合式重力坝;基坑;支护;现场试验;监测;位移 【中图分类号】TU753[文献标识码]A[文章编号】1002-8498(2015)21-0071-06 FieldTestofaCompositeGravityDamDesignedforFoundation Excavation Supporting ChenKunxiao',Shao Weiping',Cai Weiming²,LiuZunjing?,Yang Min? (1.Zhejiang Shunjie Construction Co.,Shanghai 200060,China;2.Tongji Architectural Design(Group)Co.,Ld., Shanghai200092,China;3.Key Laboratory of Geotechnicaland Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 4. Departmentof Geotecnical Engineering, Tongji University,Shanghai 200092,China) Abstract:The posite gravity dam foundation excavation supporting is a kind of posite structure different with gravity cement-soil wall and soldier pile wall.The authors have proved that concrete piles near the foundation excavation side,cement wall far the foundation excavation side and their space effect share external load by paring the posite gravity dam foundation excavation supporting and soldier pile wall & SMW engineering method pile. This paper puts forward the mechanism of stress and deformation law of the posite gravity dam foundation excavation supporting and provides powerful support for further research. Key words:posite gravity dams; foundation excavation; supports;field test;monitoring; deformation 0引言构,目前已有一些数值分析和简化分析方法对其进 对于坑深5~8m的地下1层的基坑工程,常见行了研究。
[关键词]复合型拦砂坝;冲击力;动力响应;有限元分析 [中图分类号]TV641[文献标识码】A【文章编号〕1002-8498(2015)24-0114-06 Compound Dam Dynamic Response to the Impact of MassiveStoneinDebrisFlow Yu Xianbin23,Chen Xiaoqing2,Li Kun23,Wang Fei23,Li Yun'.2.3 (1.Institute ofMountain Hazards and Enironment,Chinese Academy of Sciences,Chengdu,Sichuan 610041,China; 2.Key Laboratory of Mountain Hazards and Surface Proces,Chinese Academy of Sciences,Chengdu, Sichuan 610041,China;3.University of Chinese Academy of Sciences,Bejing 100049,China) AbstractDams,as the line of defense against debris flow,play animportant role in reducing the damage of debris flow,but they are ofen partial or plete failure due to the impact of large stone. In this paper, a new pound dam has been put forward. In order to reduce the energy generated by the massive stone impacting the dam, two measures (piling up coarse sand soil or laying plastic foam board) are proposed.With the finite element analysis software ABAQUS, a three-dimensional numerical model of the dam and the large stone is established. The pound dam dynamic response is simulated to the impact of massive stone in debris flow with different velocities, the impact force time history curve of the pound dam contact surface and the kinetic energy dynamic evolution law of the system of the dam and massive stone are obtained, and paring with the conerete gravity dam. The results show that, in front of the dam,piling up coarse sand soil or laying plastic fo...
2011年5月上 施工技术 第40卷第340期 CONSTRUCTION TECHNOLOGY 89 基槽回填波纹管降水井施工技术 李海生,张肇庆,王学武,王洋,陈明昕,马起昌 (中建一局集团第五建翼有限公司,北京100024) [摇]基槽降水井采用波斑管成井施工法术,具有工便捷、道将低廉、施工周期短等特点,是取代常规初 管井施工的理想方法.嘉里扬州酒店项口地下室面较大,基悦较深,采用波纹管威井对卷悦图绕降水的方式,拉 制地下室水值对建物的影响.说项目遥过含理的施工漏水量及管数量计算,采取含理的施工工艺,有地将 地下水位降到设计标高以下,保证了地下室传构的安金性及穆定性. [关键询]降水:回植土:渡纹管:成井 [中分类暑TU753.66 [立献识码]A [支章编1002-8498(2011)09-0089-03 Construction Technology of Corrugated Pipe Dewatering Well for Foundation Trench Backfill Li Haisheng Zhang Zhaoqing Wang Xuewu Wang Yang Chen Mingxin Ma Qichang China Construction First Division Group the Fifth Co. Ltd.Beijing 100024 China) Abstract:Dewatering well for foundation trench backfill uses construction technology of corrugated pipe well which has some characteristics such as easy construction low cost and short construction period ete. Jiali Yangzhou hotel has large-area basement and deep foundation excavation.During construction dewatering method of corrugated pipe well is adopted to reduce the influence of water level on the basement of building.By rational calculation on water inflow and number of pipe well and adopting reasonable construction technology the groundwater level is effectively reduced under the design level and the safety and stability of the basement is assured. Key words:dewatering:backfill soil:corrugated pipe:well pletion 对于高层建筑来说,当地下水位较高时,由于主8.25m 平均标高7.33m. 体结构尚来施工到抗浮设计要求的层,因此在基 根据原设计要求,塔12层、裙楼4展结构完 槽回镇土时,须在回镇土内留设降水井,以保证降水 成方可停止基悦四周降水,在此之前必须将地下水 翠统的正常运行,使地下水位维持在设计水位之下, 位拉制在设计抗浮标高以下(...
[关键词]地下工程;改造;基坑;支护;暗柱;锚杆 [中图分类号]TU753 【文献标识码】A [文章编号]1002-8498(2015)01-0049-03 Application ofDeepFoundationExcavationSupportingTechnologyin Wangfujing Hotel Reconstruction Project Chen Lei,Zeng Qingyu,Shen Yi,Wang Liang (The Third Construction Co.,Ltd.of China Construction First Group,Bejing 100161,China) Abstract; Many buildings which are always in plicated conditions have to be demolished in the center of city.Based on engineering practice of Wangfujing Hotel reconstruction project, supporting technology of concealed column with outer wall of underground and prestressed anchor is adopted. This technology can ensure the foundation excavation stability,shorten the period,reduce the cost and influence on the environment. Key words:underground; reconstruction; foundation excavation; supports; concealed column; anchors 1工程概况 线和黄土岗胡同,施工场地极为狭小,护坡桩成桩 王府井大饭店改造工程总建筑面积44435m²。
[关键词】地下工程;基坑;开挖;沉降;变形 [中图分类号】TU753.6【文献标识码]A [文章编号〕1002-8498(2012)24-0001-03 Analysis to theEffectofFoundationExcavation on AdjacentBuildings Ding Qianjin',Cui Jiangyu² (1.China Railway 15th Bureau Group Co. ,Lad.,Luoyang,He'nan 471013, China; 2.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China) Abstract:The effect of foundation excavation on adjacent buildings is drawing more and more attention. Taking the excavation of the 4th entrance of East Diaoyutai Station,Beijing Metro Line 9 as an example, this paper simulated the whole process of foundation excavation and support using software ANSYS, and analyzed the settlement deformation of the existing building foundations during excavation.The results show that the foundation settlement increases with the increase of the excavation depths.Locations closer to the excavation show larger settlement deformations and the entire building inclines toward the foundation. Key words;underground; foundation; excavation; settlement; deformation 近几年,随着城市轨道交通的高速发展,地铁造成的影响分析已成为一个很重要的课题。
2014年10月上 施工技术 第43卷第19期 CONSTRUCTION TECHNOLOGY D0I:10.7672/5j52014190001 基坑工程地下水控制管理若干问题* 陆建生 (上海广联建设发展有限公司,上海200444) [摘要]城市基坑工程建设中地下水的抽排控制关系到基坑安全、周边环境安全及水资源保护等多方面问题,目前 对应的地下水控制管理缺乏一定的系统性和规范性,按建设过程将其控制管理框架分为3层式,分析了基坑工程 环境水文地质评价的重要性,针对地下水控制设计建议推行基坑围护降水环境措施的多维一体化专项设计,并加 强微观工程性地面沉降的控制分析,分析了深基坑抽汲地下水外排量的现状,提出了建立地下水抽排的缴费制度 和地下水回灌交易市场的建议,探讨了缴费制度和市场平衡中的一些计算原则. [关键词]地下工程:基坑;地下水:管理;一体化设计 [中图分类号]TU473 [文献标识码]A [文章编号]1002-8498(2014)19-0001-05 Discussion on the Groundwater Control Management of Foundation Excavation Lu Jiansheng Shanghai Guanglian Construction Development Co.Lsd.Shanghai 200444 China) Abstract:The groundwater pumping in the foundation excavation tend to affect many problems including the excavation safety environmental safety and protection of water resources.At present the groundwater control management is lack systemic and normative.According to the construction process the technical management of the three-tier management framework was set up the significance of environmental hydro-geological assessment of the foundation excavation was analyzed the multi- dimensional integration design of retaining-dewatering-environmental measures in groundwater control was suggested and the microcosmic land subsidence control was discussed the current situation of dewatering of deep foundation excavation was remended groundwater pumping payment system and groundwater recharge trading market was proposed some calculation principle of the balance of the payment system and the mark...