施工技术 2015年12月下 98 CONSTRUCTION TECHNOLOGY 第44卷第24期 D0I:10.7672/sgjs2015240098 钢构件预拼装在大桁架工程中的应用 孙学红 (中铁建设集团有限公司北京分公司,北京100040) [摘要]结合北京市丰台区丽泽路长城金融工程项目的大桁架预拼装实例,着重介绍了钢结构预拼装的技术流程 以及在工程施工中的重要性,如此提高钢结构现场焊接的合格率,既保证了施工安全、节约了材料,又提高了劳动 生产率、减少了施工费用,同时缩短了工期. 【关键词]钢结构;桁架;预拼装;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2015)24-0098-03 Application of Steel Members Pre-assembly in Large Truss Construction Sun Xuehong Beijing Branch of China Railway Construction Group Co.Ltd.Beijing 100040 China) Abstract:Based on large truss pre-assembly construction of Great Wall Finance project in Fengtai district of Beijing this paper introduces the technical process of steel structure pre-assembly and importance in construction the pre-assembly technology improves the qualified rate with site welding for steel structure ensures construction safety saves materials improves labor productivity saves construction cost shortens construction period. Key words:steel structures;trusses;pre-assembly;construction 1工程实例 施工完毕,确保施工过程中万无一失,特要求钢结 本工程位于北京西二、三环之间的丽泽金融商 构大桁架构件必须加工完毕后在加工厂进行 务区,塔楼建筑总高度154m 共33层,地下4层.预拼装,预拼装完成后经四方检查、验收合格后方 主楼结构形式为型钢混凝土框架剪力墙核心筒 可进入现场.钢结构大桁架预拼装方案采用 结构.本工程在①/③~⑧轴设置转换钢桁架,桁Autodesk CAD软件进行放样,进行严格尺寸标注, 架层为5~7层,桁架杆件最大截面L1(2×H900× 对钢构件拼装后经过现场测量数据记录,将测量数 900×80×80) 材质均为Q345B.单根梁弦杆长度 据输人计算机后与原设计进行对比,检查加工构件 达29.7m 分别为上、中、下弦,单钢构件最重达32t. 是否满足设计要求,最后对整体钢结构大桁架验收. 经过前期的钢结构深化设计,将大桁架分解为27段 3.1预拼装方法的确定 吊装,安装接口为40道,安装焊缝约150条,吊装总 预拼装方法分为以下4种:①整体预拼法将 质量约440t. 需要进行预拼装范围内的全部构件按施工详图所 2试装目的 示的平面(空间)位置,在工厂(现场)借...
2014年7月下 施工技术 第43卷第14期 CONSTRUCTION TECHNOLOGY 73 D0I:10.7672/sgjs2014140073 钢屋盖大位移容差滑移施工技术研究与应用* 林冰,丛峻,石敬斌,孙鹏程 (中国建筑股份有限公司技术中心,北京101300) [摘要]笔者用有限单元法对大跨度钢屋盖滑移施工顶推位移的不同步性进行了理论研究,提出了大位移容差滑 移施工技术,并对其应用进行了简要的介绍.研究发现,滑移施工时各顶推点普遍允许作用有量值不同的顶推位 移,只要各顶推点的不同步位移容差在某一限值范围内,就不会造成结构的破坏,没有必要严格控制滑移施工时各 顶推点的位移同步性.与同步滑移施工技术相比,大位移容差滑移施工技术能够降低施工难度,加快施工进度,节 约生产成本. [关键词]钢结构;屋盖;滑移;研究;应用 [中图分类号]TU391 [文献标识码]A [文章编号]1002-8498(2014)14-0073-05 Study and Application on Asynchronously Pushing Construction for Sliding Steel Roof Structure Lin Bing Cong Jun Shi Jingbin Sun Pengcheng China State Construction Engineering Co.Ltd.Technical Center Beijing 101300 China) Abstract:This paper investigates asynchronously pushing displacement of sliding steel roof structure.By parison and analysis of results of the puter simulation of construction process an acceptable difference of displacement construction technology for sliding steel roof structure is provided.It is not necessary to control the synchronization for sliding construction.Construction practice demonstrates the technology can reduce construction difficulty accelerate construction schedule and save cost. Key words:steel structures;roofs;sliding;research;application 1研究背景 定的设计荷载及其组合,正常情况下主体钢结构处 在屋盖结构施工过程中,屋盖主体钢结构一般 于变形可恢复的弹性状态.可以判断,施工中,即 仅承受自重、施工荷载、温度作用和风荷载.对采 便是按照塑性进行设计的构件,在没有承受全部设 用滑移施工方案的屋盖结构,由于滑移就位前,屋 计荷载及其组合时,必定处于弹性状态. 盖结构只是“搁置”在滑移轨道上,并没有与主体支 由于受滑移轨道的安装误差、顶推滑移机器人 撑构件进行连接.定性地分析,温度作用下屋盖结 的控制手段和精度、顶推滑移机器人反力自锁装置 构可在水平方向和竖向自由伸缩,温度影响较小. 打滑和松动、卡轨等诸多...
[关键词]高层建筑;钢结构;钢骨柱;施工技术 [中图分类号]TU758 [文献标识码]A [文章编号]1002-8498(2014)14-0159-03 Construction oftheSpecial-shapedSteelReinforced Column ofJinlingHotelExpansionProject Chen Jianbo',Li Yonghong',Ma Huaizhang² (1.School of Civil Engineering,Nanjing Communications Institute of Technology,Nanjing,Jiangsu 21l188,China; 2.The Third Construction Co.,Ltd.of China Construction Eighth Engineering Division,Nanjing,Jiangsu 210046,China) AbstractThis paper introduces the application of construction of the special-shaped steel reinforced column in Jinling Hotel expansion project,and the construction difficulties of special-shaped steel reinforced columns,steel column installation scheme and construction method of reinforced steel reinforced column are indicated in detail.During construction, it is difficult in surveying location, structure lifting,formwork and steel bar engineering. By special construction plan,scientific and reasonable feasible construction technique measures are taken,and the special-shaped steel reinforced column construction is pleted eventually. Key words:tall buildings; steel structures; steel reinforced column;construction 1工程概况 600mm×25mm×38mm,单根重约5.3t。
[关键词]文物建筑;木构件;加固修;工艺 [中图分类号】]TU746.3 [文献标识码】A【文章编号]1002-8498(2013)03-0053-04 ReinforcementandRepair Construction ofWood MembersofBellTowerinJinlingMiddleSchool Huang Linfa',Chun Qing²,Chen Lichao (1.Jiangsu Su’nan Construction Technology Co.,Ltd.,Nanjing,Jiangsu 210008,China;2.Key Lab of Urban & ArchitecturalHeriage Conservation,MinistryofEducation,SoutheastUniversity,Nanjing,Jiangsu210096,China; 3.Nanjing Zhengbang Construction Technology Co.,Lad.,Nanjing,Jiangsu 210028,China) Abstract;The BellTower in Jinling Middle School is a national cultural heritage.It is amixed masonry and wood structure and had shown obvious damages.Apart from being retrofitted for seismic resistance, the wood members were also required to be strengthened for load bearing capacity and durability.Taking this project as an example, this paper illustrated the reason and method for the retrofitting of wood members as well as the construction technology.The experience can provide reference for similar projects. Key words:cultural relic building;wood member;reinforcement and repair; technology 1工程概况 工程施工,包括结构抗震加固和木构件的加固修 金陵中学钟楼位于南京市鼓楼区中山路169号两部分。
为 Fig.1 South facade of Bell Tower 了更好地保护金陵中学钟楼文物建筑,于2011年 in Jinling Middle School 12月至2012年7月对金陵中学钟楼进行了加固修 2钟楼木楼面加固修 *国家自然科学基金():江苏省建设厅科技项目 2.1木格栅端部角钢支座加固 (JS2011JH02) 2.1.1加固原因 [作者简介]黄琳发,工程师,项目经理,E-mail:115050782@ [收稿日期]2012-08-29 由于木格栅端部长期埋于墙...
2015年2月上 施工技术 第44卷第3期 CONSTRUCTION TECHNOLOGY 103 D0I:10.7672/5js2015030103 金属屋面风机洞口柔性防水方法的研究与应用 王凌云,王垚森2 (1.西南石油大学土木工程与建筑学院,四川成都610500; 2.四川华神钢构有限责任公司,四川成都610000) [摘要]目前钢结构在建筑中应用广泛,但钢结构厂房金属屋面渗漏现象却相当普遍,严重影响到建筑物的使用功 能.对钢结构厂房金属屋面风机洞口渗漏进行现场调查,详细分析了钢结构厂房金属屋面风机洞口渗漏的原因, 并对现有一般做法存在的不足与缺陷进行了剖析,提出了一种新的防水方法,并应用于重庆某钢结构厂房,结果表 明,这种方法对金属屋面风机洞口处密封性、耐久性、防水性能等得到了显著提高,节约了成本,经济和社会效益 显著. [关键词]防水工程;屋面;金属屋面;风机洞口:施工技术 [中图分类号]TU761.11 [文献标识码]A [文章编号]1002-8498(2015)03-0103-04 Research and Application of Flexible Waterproof Method for Metal Roof Fan Portal Wang Lingyun' Wang Yaosen? (1.Institute of Civil Engineering and Construction Southucest Petroleum Unirersity Chengdu Sichuan 610500 China; 2.Sichuan Huasun Steel Structure Co.Lsd.Chengdu Sichuan 610000 China) Abstract:Currently application of steel structure in building broad but the leakage phenomenon of steel structure metal roof is quite mon which seriously influenees the using function of the building.This paper takes a mount of investigation of the metal roof fan portal leakage takes a detailed analysis of the causes of leakage of steel structure in the metal roof fan portal and puts forward a new waterproof method which is applied to an steel structure building in Chongqing.The results show that the new waterproof method significantly improves the sealing durability waterproofing property of metal roof fan portal.The study saves quite a mount of cost and owns a remarkable economic and social benefit. Key words:waterproofing;roofs;metal roo...
施工技术 2012年8月下 112 CONSTRUCTION TECHNOLOGY 第41卷第371期 金华市体育场网架支墩设计与施工 江涛1,倪英戈2,冯建峰3,吴巧珍 (1.中天建设集团有限公司,浙江金华321000;2.金华市建设工程质量监督站,浙江金华321000; 3.浙江致远建设工程咨询监理有限公司,浙江金华321000) [摘要]金华市体育场采用多点支撑与前端大拱相结合的形式,两侧落地处通过设置大体积混凝土墩与网壳结构 连接.网架支墩为箱形结构,网架的复杂受力传到支墩.为了确保支墩的受力稳定和造价控制,设计与施工时采 取了多项新技术的综合应用,如深基坑支护、抗拔抗剪铺杆、大体积混凝土等.其中边坡支护采用放坡加土钉支 护,支墩内部填土和蓄水外翼底板用毛石混凝土压重,确保支墩整体和局部受力都满足设计强度及刚度要求. [关键词]体育场;网架;深基坑;支墩;混凝土;锚杆;施工技术 [中图分类号]TU455.6 [文献标识码]A[文章编号]1002-8498(2012)16-0112-03 Design and Construction of Space Truss Buttress in Jinhua Stadium Jiang Tao' Ni Yingge2 Feng Jianfeng Wu Qiaozhen' (1.Zhongtian Construction Group Co. Lid. Jinhua Zhejiang321000 China; 2.Jinhua Construction Engineering Quality Supervision Station Jinhua Zhejiang 321000 China; 3.Zhejiang Zhiyuan Construction Engineering Consultation and Supervision Co.Ltd.Jinhua Zhejiang 321000 China) Abstract:The space truss of Jinhua stadium adopted multi-point support which was bined with a large arch in the front.The landing foots of the arch were connected to the space truss by seting mass concrete buttress.The buttress was a box-shaped structure that undertook the plex forces transferred from the space truss.In order to assure the structural stability and to control cost a number of new technologies were used during design and construction such as deep foundation excavation supports anti-pulling and anti-shearing rock bolts mass concrete etc.For the deep foundation excavation slopes were used bined with soil nail supports.Rubble con...
[关键词】体育场;混凝土;V形柱;施工技术 [中图分类号]TU245[文献标识码]A[文章编号]1002-8498(2011)22-0062-03 ConstructionofV-shapedColumnintheStadium of Jinhua Sports Center Jiang Tao',Meng Zhuangzhi²,Meng Lingyun' (1.Jinhua Branch ofZhongtian Construction Group Co.,Lad.,Jinhua,Zhejiang 321000,China; 2.Zhejiang Zhonghe Architetural Design Co.,Lud.,Shaoxing,Zhejiang 312000,China) Abstract:There are totally twenty four big V-shaped concrete columns on the west side and east side in Jinhua Sports Center Stadium.The V-shaped columns are connected by three ring beams as supporting system of stand and steel grid.The construction of V-shaped columns is difficult,because of the irregular reinforcement is difficult to process and assemble,as well as the concrete pouring. Through scheme optimization and surveying control, construction quality is ensured and the effect is good. Key words:stadiums; concrete;V-shaped columns; construction 1工程概况 金华市体育中心体育场工程总建筑面积 44064m²,框架结构,主体3层,南看台局部有地下 室,建筑总高度46.130m(钢结构最高点)。
施工技术 2012年5月上 28 CONSTRUCTION TECHNOLOGY 第41卷第364期 金华体育中心体育场看台罩棚 前端大拱管桁架施工技术 江涛,孟壮志2,马文科3,倪英戈3,冯建峰4,陈利芳1,王伟力 (1.中天建设集团有限公可,浙江金华321000;2.浙江中和建筑设计有限公司,浙江绍兴312000; 3.金华市建设工程质量监督站,浙江金华321000;4.浙江致远建设工程咨询监理有限公可,浙江金华321000) [摘要】金华市体育中心体育场月牙形看台罩棚钢结构为双层曲面螺栓球网架与前端大拱相结合的形式,前端大 拱和落地处局部采用管桁架,跨度大,高度高,工期紧,需要直接在现场拼装,精度控制要求高,旅工困难.管桁架 通过设置临时支撑架作为支撑点进行分段吊装、高空拼装、整体卸载等旅工技术,圆满地完成了安装任务. [关键词]钢结构:管桁架;临时支撑;安装;定位;卸载 [中图分类号]TU758.11 [文献标识码]A【文章编号]1002-8498(2012)09-0028-04 Construction Technology of Front Arch Pipe Truss of the Grandstand Awning in Jinhua Sports Center Stadium Jiang Tao' Meng Zhuangzhi Ma Wenke' Ni Yingge' Feng Jianfeng' Chen Lifang' Wang Weili' (1.Zhongtian Construction Group Co.Lad.Jinhua Zhejiang 321000 China; 2.Zhejiang Zhonghe Architeetural Design Co.Lid.Shaoxing Zhejiang 312000 China; 3.Jinhua Construetion Engineering Quality Supervision Station Jinhua Zhejiang 321000 China; 4.Zhejiang Zhiyuan Construction Engineering Consultation and Supersision Co.Lid.Jinhua Zhejiang 321000 China) Abstract:Steel structure of the crescent grandstand awning in Jinhua sports center stadium is bination shape of double-layer curved bolt-ball net frame and the front arch.The front arch uses pipe truss.The truss has characteristics of large span high and short construction period to need be assembled on-site. So the truss construction preeision is high and diffieult.By setting out temporary support as support point and using construction technology of being hoisted by segment assembled in high-sky...
[关键词】拆除;金刚石绳索;切割工具;锚索 [中图分类号]TU746.5【文献标识码】A[文章编号]1002-8498(2013)22-0071-03 Application of Diamond Wire-line Cutting Technique on a UndergroundExisting CableDemolition Yang Guangzhi,Pan Hongbao (Beijing Fayan EngineeringTechnology Co.,Ld.,Bejing100021,China) Abstract;In the construction of Shezhen subway's underground diaphragm walls for the main buildings with grab buckets and mud protection, the anchor cables around 5meters and 15 meters underground needed to be dismantled.Based on the scheme parison,the diamond wire-line cutting technology was adopted. The construction results show that this technology has the advantages of effective,, safe, environment friendly and quick way, and can ens...
2016年10月上 施工技术 第45卷第19期 CONSTRUCTION TECHNOLOGY 27 D0I:10.7672/5j52016190027 邻近基坑施工对某住宅楼影响数值分析研究 李旭光1,王晓磊2,付素娟3,贾媛媛 (1.河北建研科技有限公司,河北石家庄050021;2.河北工程大学土木工程学院,河北邯郸056038; 3.河北省建筑科学研究院,河北石家庄050021) [摘要]结合某住宅楼纠倾工程实例,采用有限元软件对深厚软土地基上基坑降水、开挖施工对邻近建筑物的影响 进行了三维数值模拟分析.从模拟结果中提取建筑基底土体变形及结构应力和应变结果进行分析,结果表明:邻 近基坑降水引起地基土体有效应力的增加以及基坑开挖造成土体的塑性流动是该楼倾斜的主要原因. [关键词]基坑:降水;数值模拟;变形 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)13-0027-03 Numerical Analysis of the Impact of Adjacent Foundation Excavation Construction on a Residential Building Li Xuguang Wang Xiaolei Fu Sujuan Jia Yuanyuan' (1.Hebei Building Research Engineering Co.Ld.Shijiazhuang Hebei 050021 China;2.College of Civil Engineering Hebei University of Engineering Handan Hebei 056038 China;3.Hebei Academy of Building Research Shijiazhuang Hebei 050021 China) Abstract:Based on an example of a residential building rectification project in deep soft soil foundation site a 3D numerical simulation was used to analyze the influence of foundation excavation precipitation and excavation on the adjacent buildings.The simulation results of the soil deformation and the structural stress and strain of the base soil were extracted for analyzing.The results show that the effective stress of foundation soil increased make the recurrence of soil consolidation caused by the adjacent foundation excavation precipitation and the exeavation casing the soil plastic flow are the main reasons of the tilt. Key words:foundation excavation precipitation;simulations;...
[关键词]高层建筑;通道塔;垂直运输:运输通道;设计:安装 [中图分类号】TU758.11[文献标识码]A[文章编号】1002-8498(2013)05-0101-03 Application ofAccess Towerin theInternational Commerce Plaza Project in Hong Kong Qiao Long,Li Juan,Shi Wei, Gao Honggang,Li Xinsheng (The First Construction Co.,Ltd.of China Construction Third Engineering Bureau,Wuhan,Hubei 430040,China) Abstract;Access tower uses steel tower as carrier and access route and is used for vertical transport in construction of super tall buildings. Combined with the International Commerce Plaza Project in Hong Kong,the authors introduce access tower in detail, including its design,manufacture,installation, maintenance and demolion. The engineering practice shows that using access tower can save construction site, allow closed decoration,speed up decoration progress and reduce the infuence of construction on lower floor operations, which made it possible for super tall buildings to be put in use by stages. Key words:tall buildings; access towers; vertical transportation; transport corridor; design; installation 1工程概况续安装的永久电梯衔接搭配使用。
施工技术 2011年10月下 46 CONSTRUCTION TECHNOLOGY 第40卷第351期 通省特长隧道软岩大变形机理及处治措施 沈峰1,成词峰2,刘桂兵3 (1.湖北省高速公路集团有限公司,湖北武汉430051;2,中国地质大学工程学院,湖北武汉430074; 3.中铁十七局集团第三工程有限公司,河北石家庄050081) [摘要]在现场调研及隧道监控量测的基础上,研究了十堰至房县高速公路通省隧道施工中出现的大变形问题,通 过分析该隧道大变形破坏的特点,从围岩岩性条件、工程结构受力和施工因素等方面对该隧道的大变形机制进行 了研究.结果表明通省隧道发生大变形的主导因素是隧道所处的地质环境和软弱围岩,而施工开挖卸荷是产生大 变形的诱因.结合研究成果提出针对大变形段的治理措施,监控量测结果表明该治理措施取得较好效果. [关键词]隧道工程;软岩;变形;监测 [中图分类号]U213 [文献标识码]A [文章编号]1002-8498(2011)20-0046-04 Mechanism and Control Measures of Large Deformation of Tongsheng Tunnel Shen Feng' Cheng Cifeng? Liu Guibing' (1.Hubei Expressway Co.Lad.Wuhan Hubei 430051 China;2.Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China:3.CR17BG No.3 Engineering Co.Ltd.Shijiazhuang Hebei 050081 China) Abstract:Based on field investigation and monitoring measurement the large deformation of Tongsheng tunnel on Shiyan-Fangxian Highway is studied.By analyzing the features of deformation and failure of the tunnel the mechanism of large deformation is discussed from surrounding rocks conditions construction factors and construction.It is found that the special geological environments and soft surrounding rocks caused the large deformation.Countermeasures are proposed on basis of the study results in the construction and satisfactory effects are achieved. Key words:tunnels;soft rock;deformation;monitoring 1工程概况 治理措施,为保证全线隧道施工安全顺利,有着十分 通省隧道是湖北省十堰至房县高速公路上的特重要的意义. 长隧道,是全线的控制性工程.左线设计长度2地质条件 6900m 右线设计长度6873m.隧道为三心圆曲墙 2.1地形地貌 断面,拱半径R1=5.60m 曲墙半径R2=8...
[关键词】高层建筑;地下工程;逆作法;型钢柱;施工技术 [中图分类号]TU745.5 [文献标识码】A [文章编号】1002-8498(2016)01-0028-05 ResearchandApplication ofSteel Column Construction TechnologyofTop-downMethod Liu Gang (Shanxi Sijian Group Co.,Lud.,Taiyuan,Shanxi030012,China) Abstract:Top-down method was adopted in a project,and steel reinforced concrete structure was used as vertical structure.According to the organization and technical innovation,insert connection and integrated construction of steel column and steel support were realized.This method ensured the reasonable conversion of vertical force transfer system,and the parameters can meet the requirement of design and standard. Characteristics,construction principle and technology points were introduced in detail. Key words:tall buildings;underground; top-down method;steel column;construction 随着我国建筑业的发展,高层、超高层建筑正13600㎡²,总建筑面积12.7万㎡²,其中地上 在不断地崛起,地下部分在实际施工时由于受施工8.7万㎡²,地下4.01万㎡²。
施工技术 2015年10月下 114 CONSTRUCTION TECHNOLOGY 第44卷第20期 D0I:10.7672/sgj82015200114 逆作法结合格构柱与贝雷架模板支撑 体系设计与应用 杨建江,杨乐 (天津大学建筑工程学院,天津300072) [摘要]结合长沙某超高层建筑地下结构施工的工程实例,介绍了逆作法结合格构柱与贝雷架模板支撑体系的工 程设计、节点构造;明确了施工工艺流程与要点;并对实际工程中的支撑体系进行设计验算.结果表明,该支撑体 系满足承载力要求;指出将逆作法与该模板支撑体系结合,较好地解决了深基坑开挖对相邻高层建筑基础扰动这 一难点,从而保证了施工安全,降低了施工难度,缩短了施工周期. [关键词]高层建筑;逆作法;格构柱;贝雷架;支撑体系 [中图分类号]TU745.3 [文献标识码]A [文章编号]1002-8498(2015)20-0114-03 Design and Application of Top-down Construction Method Combining with Lattice Column and Bailey Frame Formwork Supports Yang Jianjiang Yang Le School of Civil Engineering Tianjin University Tianjin 300072 China) Abstract:With an underground structure construction project of super high-rise building in Changsha the project design joint construction calculation construction process and point of top-down method bining with lattice column and Bailey frame formwork supports system are discussed.The results confirm that the system meets bearing capacity and solves the problem of disturbance to adjacent high-rise building's foundation.Therefore the construction safety is assured and construction period is shortened. Key words:tall buildings;top-down construction;lattice column;Bailey frame;supports 1工程概况 2施工要点分析 某工程地处湖南省长沙市芙蓉区,该工程由 南侧基坑施工时,地下室基础垫层标高为 T1 T22栋塔楼和相应裙楼组成,总建筑面积约98 -34.000m.如果采用逆作法结合常规的高支模施 万m2.T1塔楼总高度452m 地上95层(包括6层 工方案,则满堂脚手架需要搭设的高度为34.0m 大 裙楼);T2塔楼总高度315m 地上63层(包括6层 部分脚手架立杆将立在斜土坡上.由于斜土坡的 裙楼);T1和T2塔楼地下均为7层(包括2层夹坡度较大,立杆搭设后不容易满足稳定性要求;并 层).由于该项目地处长沙市中心,其基坑南北两 且从上至下每施工完一层后,当进行斜坡土...
2012年1月上 施工技术 第41卷第356期 CONSTRUCTION TECHNOLOGY 3 逆作法施工工艺在软土地质条件下的应用与实践 王允恭,赵琪 (上海市第二建筑有限公司,上海200080) [摘要]介绍了逆作法施工工艺的技术背景、发展状况以及技术特点.结合工程实践经验,从围护结构、竖向支撑 体系、水平支护结构以及土方开挖作业等几个方面介绍了逆作法施工的关键技术.对逆作法近年来的发展趋势进 行了阐述,并提出了未来的研究方向,包括加强对逆作结构受力机理和变形特点的研究,研发地下挖运土设备,发 展巨型桩等. [关键词]地下工程;逆作法;软土;施工技术 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2012)01-0003-04 Application and Practice of Inverse Method in Soft Soil Layer Wang Yungong Zhao Qi (Shanghai No.2 Construction Co.Ltd. Shanghai 200080 China) Abstract:Authors introduce technical background development status and technical characteristics on inverse method.Based on engineering practice authors introduce key technologies of inverse method from retaining structure vertical support system horizontal support structure and earth excavation. Furthermore authors expound trend of inverse method and propose research direction including research on stress mechanism and deformation characteristics of reverse structure developing digging and earthmoving equipment and huge piles. Key words:underground;inverse method;soft soil;construction 1概述 进的施工经验,引进了逆作法施工技术. 1.1技术背景 1.2发展状况 随着我国经济的飞速发展,城市规模得到了巨 1935年日本首次提出逆作法工艺的概念,经历 大的扩张,开发地下空间也日益被人们所接受和重 了70余年的研究和工程实践,目前已较广泛地应用 视,上海地区地铁工程、地下变电站、地下商场工 于高层和超高层的多层地下室、大型地下商场、地 程、地下停车库等大力开发就是一个佐证.开发和 下车库、地铁、隧道、大型污水处理池等结构. 利用地下空间,首要进行的就是大规模的土方开 在实际工程方面,日本、美国、英国、法国、德国 挖,随着地下工程的建设发展,深基坑支护体系的 等国和我国台湾地区等都有成熟的应用.其中典 设计计算和施工方法也在不断地更新和完善. 型的工程有:世界上最大的地下街日本东京八重洲 敞开式开挖是传统的深基坑施工方法,随着多 地下商业街,共3层,建筑面积7万m2;最深的地下 年的工程积累,已经有了十分成熟的设计方法和施 街莫斯科...
2011年7月上 施工技术 第40卷第344期 CONSTRUCTION TECHNOLOGY 69 逆作法基坑工程监测综述 刘铭,张震 (同济大学地下建筑与工程系,上海200092) [摘要]总结了我国逆作法基坑工程建设、规范及监测的发展历程,以及规范关于逆作法基坑监测的规定.讨论了 逆作法基坑工程几个关键项目的监测方法,包括立柱差异沉降监测及立柱与围护墙差异沉降监测、结构梁板内力 监测、坑底隆起监测;指出了目前逆作法基坑监测中存在的问题,最后展望了道作法监测的发展趋势. [关键词]逆作法;深基坑;监测;综述 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2011)13-0069-03 Review of the Monitoring of Top-down Excavation Liu Ming Zhang Zhen Department of Geotechnical Engineering Tongji University Shanghai 200092 China) Abstract:Firstly the development process of construction specifications and monitoring of top-down excavation are summarized as well as the specification of monitoring on the top-down excavation. Secondly several key project monitoring methods are discussed including the monitoring of column differential settlement internal forces of structural slab and uplift at the bottom of the foundation excavation.Then the current problems in top-down excavation monitoring are pointed out.Finally the trends of monitoring of top-down excavation are predicted. Key words:top-down construction method;deep foundation excavation;monitoring:review 近年来,我国基坑工程呈现出如下新特点:基坑多数逆作法基坑很难找到文献报道其监测内容,或 的规模和开挖深度越来越大、场地紧凑、基坑周边环者监测项目非常简单. 境复杂敏感.1955年哈尔滨地下人防工程中首次 2)20世纪90年代中后期这个时期北京、上 应用了逆作法施工工艺,1989年上海特种基础工程 海、广州等地大规模地铁建设,盖挖法得到了大规模 研究所办公大楼,是全国第1个采取封闭式逆作法 的应用,同时该时期出现了一定规模的地下空间的 施工的工程.20世纪90年代中后期,北京、上海、开发与利用.这个时期逆作法基坑深度一般在10m 广州等地大规模地铁建设的兴起,适用于闹市区浅 左右,也有少量深度接近15m的深基坑. 地层中施工的盖挖法得到了大规模应用. 我国规范关于基坑工程监测的指导进入了初步 逆作法施工工艺在我国还处于工程实践和理论 发展时期.先后出台了几部行业标准和国家标准, 研究的初期,...
2014年7月上 施工技术 第43卷第13期 CONSTRUCTION TECHNOLOGY 15 D0I:10.7672/sgjs2014130015 逆作法地下结构一柱一桩支承系统施工质量控制技术 李涛 (南京市建筑安装工程质量监督站,江苏南京210007) [摘要]一柱一桩是逆作法地下结构竖向支承系统最常用的形式.结合工程实例,总结了一柱一柱支承系统施工 全过程多项质量控制技术,特别是针对立柱定位和垂直度控制这一质量控制难点进行了技术创新,探索出柱底定 位加孔口柱顶调垂这一便捷有效的解决途径.实践结果表明,各项质量控制技术取得了明显成效. [关键词]地下工程;逆作法;垂直度;施工技术;质量控制 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)13-0015-04 Quality Control Technology of One Column with One Pile Supporting System in Underground Structure with Top-down Method Li Tao (Nanjing Engineering Quality Supervision Station of Construction and Installation Nanjing Jiangsu 210007 China) Abstract:One column with one pile is the main vertical supporting system of underground structure with top-down method.Based on engineering practice several quality control technologies of one column with one pile supporting system are summarized in this paper.Through technological innovation the location and perpendicular of column which is the difficulty in quality control has been conveniently and effectively solved by locating column bottom and adjusting column top.The engineering practice indicated that the quality control technology achieved successful results. Key words:underground;top-down method;verticality;construction;quality control 1结构形式 也是工程质量控制的重点.本文结合工程实例,总 目前地下结构逆作法施工时,较多采用支护结结了逆作法一柱一桩支承系统施工中主要的质量 构与主体结构全面结合的形式,即采用地下连续墙 控制技术. 作为围护结构,并兼作地下结构外墙;主体结构水2工程概况 平梁板体系作为围护结构的水平支撑;主体地下结 南京市某大型商业综合体工程为框架筒体结 构柱及柱下桩作为竖向支承系统,在基础底板浇筑 构,地下5层,地上42层,总建筑面积约18.5万m2. 完成前的逆作法施工阶段承受地下、地上各层的结 工程地下结构...
施工技术 2011年5月上 92 CONSTRUCTION TECHNOLOGY 第40卷第340 逆作法在某综合楼工程中的应用 罗红亮,辛江涛,赵建立 (中冶天工上海十三冶建设有限公司,上海201900) [要]重庆钢铁设计研究总缘含工程采用了正、逆作法相结令的施工方康.首先介了读工程在施工过程 中所遇到的难点,然后详细介了施工工序和施工方法.是后将工程采用的逆行法与一般款土地基中的逆作法 进竹对比,总传了工程进作法的优点通过逆作法施工,可有地护周边建氯,创造新的材料维放场地,取得 好的社金故益和经济故基. [关键词]逆行法:地下室:清防水池 [中分类暑]TU753.6 [献标识码]A [立章编号1002-8498(2011)09-0092-03 Application of Top-down Construction Method During Construction of Some Multifunction Building Luo Hongliang Xin Jiangtao Zhao Jianli China Metallurgical Tiangong Shanghai Shisanye Construction Co.Lid.Shanghai 201900 China) Abstract:The normal and top-down construction methods are adopted during the construction of multifunction building of Chongqing Iron and Steel Design Institute (CISDI).The difficulties encountered during construction are discussed in detail.The top-down construction process is also introduced.By the parison between the mon construction method and the reverse method used in district IⅡof the CISDI project some advantages are found.By the top-down method proposed in this paper the adjacent building can be effectively protected and new material stacking site is also created.The good social and economic benefits are achieved. Key words:top-down construction method:basement:fire pool 在国内,许多敦土地区高层建筑物采用了逆作 法施工技术,并取得了好的效果.然而在地基条 北 科协大厦 进入现场大门 办公楼 件轻好的地区(如童庆),采用逆行法施工的建筑则 0 双钢路 进 比较少见.本文结合重庆铜铁设计研究总院(简称 000000600600000 1-2区 这 使造 排柱1-1区 人工 重钢院)综令工程,重点介招地下室消防水池的 已建3层 地下车库 后浇带 小区道路 地下车库 逆作法施工技术,为今后类似工程提供参考. 抗滑桩 新建高 层住宅 1工程概况 高层 重庆钢铁设计研究总胜有限...
施工技术 2014年5月上 114 CONSTRUCTION TECHNOLOGY 第43卷第9期 D0I:10.7672/5j52014090114 连锁空心方桩基坑支护技术应用研究 黄强,陈伟,颜小荣2 (1.中国建筑科学研究院,北京100013;2.云南中技管桩有限公司,云南昆明650032) [摘要]预应力空心方桩在国内主要应用于桩基工程,提出了将预应力空心方桩应用于深基坑工程的思路,围绕深 基坑工程关键的挡土和止水问题,研究了相关的解决措施,开发出了新的预应力空心方桩桩型,并和传统的钢筋混 凝土灌注桩进行了抗弯受剪承载力对比分析,丰富了深基坑工程支护桩的种类.在此基础上,针对实际工程,进行 了基坑支护空心方桩和钻孔灌注桩挡土加高压旋喷桩止水的技术经济对比,并进一步研究了基坑支护空心方桩的 生产工艺和施工工艺,将此种新桩型成功连锁成墙用于试验性基坑工程,由此产生了一种新型的基坑支护结构 体系. [关键词]桩基础;空心方桩;深基坑;生产工艺;施工工艺;试验 [中图分类号]TU473.1 [文献标识码]A [文章编号]1002-8498(2014)09-0114-06 Application Research of Chain Prestressed Spun Square Pile for Retaining Technology in Foundation Excavation Engineering Huang Qiang' Chen Wei' Yan Xiaorong? (1.China Academy of Building Research Beijing 100013;China: 2.Yunnan Zhongji Tubular Pile Co.Ltd.Kunming Yunnan 650032 China) Abstract:Prestressed square pile is widely used in pile foundation engineering in China.However a new usage of prestressed pile in deep foundation excavation engineering was introduced in this paper.The relevant resolved measurements were researched and the new type of prestressed square pile was developed based on solving the key problems of deep foundation excavation which are retaining soil and sealing water.Moreover the parison of moment and shear capacity between the new type of prestressed square pile and traditional reinforced concrete cast-in-place pile was put forward.As a result the types of retaining pile on deep foundation excavation engineering bee more abundant. Furthermore the parison of ...