2012年5月上 施工技术 第41卷第364期 CONSTRUCTION TECHNOLOGY 99 某基地厂房埋件精密安装测量 吕传景1,黄桂平2,隋杰明3 (1.郑州辰维科技股份有限公司,河南郑州450001;2.华北永利水电学院资源与环境学院,河南郑州450011; 3.中国建筑第八工程局有限公司天津分公司,天津300450) [摘要]结合目前国内外的高精度大尺寸三维坐标测量设备,针对我国某基地厂房基础工位埋件安装项目的实际 情况,提出了一种基于NETO5全站仪测量系统和V-STARS摄影测量系统来进行金属结构精密安装的新的施工测 量方法,经过测量和调整,工位埋件平面间距精度平均优于0.5mm 埋件垂直度平均优于1mm/m. [关键词]测量;安装;预埋件;V-STARS系统:全站仪 [中图分类号]TU198.2【文献标识码]A [文章编号]1002-8498(2012)09-0099-05 Precise Measurement on the Installation of Steel Embedded Parts in One New Carrier Rocket Construction LǚChuanjing' Huang Guiping2 Sui Jieming' (1.Sunward Technology Co.Lad.Zhengzhou He'nan 450001 China:2.College of Source and Environment North China University of Water Resources and Electric Power Zhengzhou He'nan 450011 China; 3.Tianjin Branch of China Construction Eighth Engineering Division Co. Ltd. Tianjin 300450 China) Abstract:The authors introduce one precise installation measurement method for steel embedded parts which is used during the construction of some base plant.The NETOS total station measurement system. and V-STARS photogrammetry system are used to guide the precision installation of steel structures.After adjustment the average accuracy of the plane distance between the embedded parts is about 0.5mm and the vertical distance accuracy is about 1mm/m. Key words:measurement:installation:embedded part;V-STARS photogrammetry system;total station 近十几年来,由于激光、计算机、精密制造及计埋件系统2种(见图2). 量技术的迅速发展,在传统的三坐标测量的基础 上,又发展出了其他多种现代大尺寸空间测量方 式,这些技术的应用,极大地提高了测量工作的 精度和效率.然而,目前国内的精密测量却...
[关键词]地下工程;隧道;基坑;围护桩;插人比;侧向位移 [中图分类号]TU455;TU753.3 [文献标识码】A [文章编号]1002-8498(2013)01-0044-03 OptimizationStudiesontheInsertionRatioofOutsideExcavation RetainingPileinaPitinFoundationExcavation WangXin,MaJiaorong,WangYinchang (Shanghai Urban Construction Design & Research Institute,Shanghai200125,China) Abstract;Based on the excavation of Shanghai Pudong wiring segment of the South Xizang Road cross- river tunnel, the two-dimensional numerical model of a pit in foundation pit was established with respect to a certain condition. By adjusting the insertion ratio of the outside excavation retention piles,the variation of the lateral displacement of the retention piles was analyzed and the mechanical behavior of the excavation in this condition was investigated.With prehensive consideration of both safety and economical efficiency, the insertion ratio of the outside excavation retention pile was remended to be 2: 1 to 3: 1. Key words:underground; tunnels; foundation excavation;retaining pile; insertion ratio; displacement 目前,国内学者对坑中坑基坑稳定性和施工技 然而,国内学者对坑中坑基坑围护桩插人比的 术作了一定研究。
[关键词】基坑;富水砂性地层;变形特性;监测;数值模拟 [中图分类号]TU413.6 [文献标识码]A [文章编号]1002-8498(2013)20-0099-04 Deformation CharacteristicsAnalysisofaRailTransitDeep FoundationExcavationatWateredSandyStratum Huang Zhanjun (Nanchang Urban Rail Group Co.,Lad.,Nanchang,Jiangxi 330038,China) Abstract:The author carried out monitoring data analysis of a rail transit deep foundation excavation at watered sandy stratum using probability statistics method,and obtained the same deformation law.Based on theoretical analysis,the enclosure structure deformation characteristics and monitoring index has been further discussed,including the relationship between ground settlement and strut axial forces and the excavation influence scope.The results showed that at this stratum,the enclosure structure deformation can be easy to control,and the middle deformation is the biggest.In addition, the deformation decreases rapidly from excavation face to the bottom,which is the larger difference characteristics between the watered sandy stratum and the soft soil area. Key words;foundation excavation;watered sandy stratum;deformation features;monitoring; simulation 随着计算机技术的发展,借助分析软件,技术墙,第1道支撑采用钢筋混凝土支撑,间距9m,第2 人员已经可以对基坑工程进行较好的模拟和分析, 道支撑采用Φ800×16钢管,间距3m,第3道支撑采 并在此基础上分析、评估其对周边环境的影响。
[关键词]防水工程;地下通道;变形缝;注浆;渗漏 [中图分类号】TU746.3[文献标识码]A[文章编号]1002-8498(2013)16-0095-03 Leakage Treatment on a Underpass Project Ren Shengyuan (Jiangsu Dingda New Construction Technology Co.,Lid.,Changzhou,Jiangsu 213015,China) Abstract:The connection of a underpass was supposed to be a deformation joint,but it was actually constructed as a construction joint,which caused leakage of the floor,wall and roof at both sides of the joint.Reasons for the leakage were analyzed for this project.A design scheme as well as construction plan was adopted to treat the problem. The importance of material selection is highlighted. The construction process and key construction points are introduced. At last, the author summarizes the experience on leakage treatment design and construction. Key words:waterproofing;underpass; deformation joint;grouting;leakage 1工程概况通道连接处混凝土底板、墙板和顶板变形缝两侧均 万博国际广场地处常州市商业核心区延陵路有明显的渗漏水现象,其中底板和侧墙(靠近底板 西段,亚细亚影城、莱蒙都会等商业体环绕周边,南附近)渗漏严重(见图1)。
2013年3月下 施工技术 第42卷第6期 CONSTRUCTION TECHNOLOGY 103 D0I:10.7672/8gjs2013060103 某地下通道深化设计* 张泽良,王力尚,张建林 (中建中东有限责任公司) [摘要]地下通道有造价低、施工工艺简便、工期短等优点,可缓解主干道的交通压力.以阿拉伯联合酋长国 (United of Arabian Emirates UAE)某地下通道工程为例,介绍了地下通道的设计原则,包括荷载取值,混凝土强度 等级确定,钢筋设计以及施工图深化设计以及施工过程中的模板计算. [关键词]地下通道;深化设计;荷载;模板 [中图分类号]U449 [文献标识码]A [文章编号]1002-8498(2013)06-0103-03 Detail Design of a Underpass Zhang Zeliang Wang Lishang Zhang Jianlin China State Construction Engineering Corporation Middle East L.L.C. Abstract:Underpass has some characteristics of low cost simple construction technique and short construction period etc. which can reduce traffic pressure of the main road.For a underpass engineering in United of Arabian Emirates as an example the paper shows design principle of the underpass including determination of load and concrete grade design of steel bar detail design of construction drawing and formwork calculation for construction process. Key words:underpass;detail design;load;formworks 相对于跨路桥梁、复合立体交叉等设计形式,单位自重9kN/m3. 地下通道有着造价低、施工工艺简便、工期短等优 2)活载根据AASHT0规范活载取1.5安全 点.地下通道可大大缓解主干道的交通压力,主要 系数,为4.1kN/m2. 有以下几种交通功能:①联系主千道和支路的交 3)二次荷载二次荷载主要指风荷载:风速取 通,各行其道,避免互相干扰;②避免在高速主干道 为160km/h 设计风荷载横向为2.4kN/m2 纵向为 上调头而设置交通信号灯,提高高速主干道的通行 0.9kN/m2 任意方向为1.9kN/m2. 能力;③为阿拉伯当地地区特有的骆驼群开辟专用 1.2混凝土设计 通道而不影响主干道的交通. 1)混凝土强度等级混凝土强度等级设计依 1基本设计原则 据28d混凝土立方体试件抗压强度,并假设立方体 1.1设计荷载 试件强度为150mm×300mm长柱体试件强度的1.2 UAE结构设计采用AASHTO(American 倍.①预应力混凝土强度等级为C45/C20;②桥梁 Association of State Highway and Transportation 上部结构非预应力混凝土、桥墩、桩基和路障、桥台 0 ffici...
施工技术 2014年2月下 112 CONSTRUCTION TECHNOLOGY 第43卷第4期 D0I:10.7672/8gjs2014040112 某地下车库井点降水施工技术 李庆东,史晓红 (山西水利职业技术学院,山西运坡044004) [摘要]某地下车库基坑工程施工环境复杂,施工场地狭小,且基坑周边存在多栋高层建筑,降水施工可能会使周 边高层建筑产生不均匀或过大沉降.为保证工程安全顺利施工,通过方案比选,在确定了井点降水方案后,采取了 相应的钢管桩支护、分层放坡开挖、沉降监测等措施.沉降监测结果表明,该方案有效确保了工程的顺利进行. [关键调]地下工程;降水;支护;监测 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)04-0112-03 Construction of Well Point Dewatering in a Underground Garage Li Qingdong Shi Xiaohong (Shanxi Water Technical Professional College Yuncheng Shanxi 044004 China) Abstract:The construction environment of a underground garage is plex and the construction site is narrow the dewatering construction will cause the uneven settlement of the around tall buildings.In order to ensure the project safety the well point dewatering scheme is ensured by scheme parison and the measures of steel pipe support excavation without any protection and settlement monitoring are adopted.The settlement monitoring shows that the construction safety is ensured. Key words:underground;dewatering;supports;monitoring 1工程概况 沉降甚至倾斜. 华林逸墅花园小区位于山西省运城市机场大 为保证工程安全顺利施工,防止降水对周边高 道与学苑路立交桥东北侧,占地约12hm2.整个场 层建筑的影响,在确定了井点降水方案后,采取了 地为非自重湿陷性场地,等级属1(轻微)级,主要 钢管桩支护、分层放坡开挖、沉降观测等措施. 由第四纪上更新统冲洪积湿陷性粉土、粉土、粉细2井点降排水 砂、黏土组成,无断层、破碎带等.其中地下车库为 2.1井点降水 框架结构,基坑平面呈长方形,南北向长118.8m 东 1)降水效果要求由于地下静水位很高,埋深 西向长101.7m ±0.000m相当于绝对标高 在4.5~5.6m 而基坑开挖深度为6.0m 并且设计 370.800m 场地自然标高为-0.800m 车库基坑设 要求工程施工时必须将地下水位降至基坑底面 计标高为-6.800m 开挖深度为6.0m 属深基坑工 1.0m以下,所以基坑内大部分区域水位降深在 程.基坑周边5栋高层建筑均采用筏板基础,均为 2.5m左右.在降水过程中要监测水位下降数据,同 地下1层、地上18层的剪力墙结构,东边的15号楼 时控制地下水位下降速率,有效地减少因降水导致 距基坑边缘不到2m 西边的3 4号楼距基坑边缘不 的基坑周边建筑物不均匀或过大沉降的可能. 到5m 南边的1 2号楼距基坑边缘不到10m.根据 2)井点降水方案设计时未采用止水帷幕隔 地质勘察报告,地下水埋深小于基坑开挖深度,所 断基坑外侧地下水,而是在基坑内布设井点降水, 以工程施工时必须进行降水.但由于特殊的周边 主要是因为周边高层建筑主体已完工,不便进行钻 环境,降水给施工带来了不安全因素,如果施工方 孔灌注桩施工.井点降水主要有2种方案:①设 案和操作不当,可能会使周边高层建筑产生扰动、 600mm的降水井30口,井深12~15m 井点距 [作者简介]李庆东,副教授,E-mail:xyeley@sohu.eom 离≤20m;②设b600mm的降水井12口,井深22m. [收稿日期]2013-09-13 经设计、勘察、监理、建设、施工等单位反复研究,邀 万方数据 2014No.4 李庆东等:某地下车库井点降水施工技术 113 请有资质的地下水资源公司现场考察后,从...
施工技术 2014年2月下 46 CONSTRUCTION TECHNOLOGY 第43卷第4期 D0I:10.7672/sgjs2014040046 某地下车库上浮事故中结构破坏机理分析与加固 卢著辉,徐正来,翁俊,姚晟洁 (上海房屋工程建设技术发展有限公司,上海200051) [摘要]某新建地下车库上部覆土施工未完成,暴雨后地下水位上升引起车库上浮,造成地下车库构造严重破坏. 结合工程实际情况,对该上浮事故导致的地下车库结构破坏机理进行了分析,并针对各类构件的破坏提出了可行 的加固处理措施,并详细介绍了受损的柱、梁、底板、顶板等部位的加固处理措施.结果表明:通过加固处理,受损 构件得到修复,确保了工程安全. [关键词]加固;地下车库;上浮;破坏机理 [中图分类号]TU943 【文献标识码]A [文章编号]1002-8498(2014)04-0046-03 Structural Damage Mechanism Analysis and Strengthening in an Underground Garage Floating Accident Lu Zhuhui Xu Zhenglai Weng Jun Yao Shengjie Shanghai Buildings Engineering Technology Development Co.Ltd. Shanghai 200051 China) Abstract:The floating accident of a newly built underground garage was caused by heavy rain and its covering soil placement had not been pleted.Combined with actual conditions the damage mechanism of the underground garage structure in the accident is analyzed and the strengthening treatments for different structural members are proposed including the structure member of columns slab and top plate.The results show that the damaged ponents are repaired after strengthening and the project quality is ensured. Key words:strengthening;underground garage:floating;failure mechanism 0引言 土强度等级均为C30.地下车库结构平面布置如图 随着城市的不断发展,对地下空间资源开发利1所示. 用要求越来越高,大面积的单层或双层地下车库不 断出现.地下结构的抗浮验算在相关规范中已有 ①②④③⑥⑦⑧⑨⑩①203 规定,在正常设计工况下,这类地下车库的抗浮稳 8100×9 定性一般均能满足;但是,施工过程中的突发事件 20 8 M 可能导致各种不利因素的叠加,从而引发地下结构 的上浮事故.本文对某新建地下车库在施工过程 中的上浮事故原因进行了分析,并对该事故导致的 8X004 ① 各类结构构件破坏提出了针对性的加固处理措施. G 1工程概况 某地下车库平面形状近似成矩形,南北向总长 “号楼 约94.35m 东西向总长约80.50m 单层框架结构, 62X0006 C 层高约3.9m 框架柱截面一般为600mm×600mm B 地下车库框架梁截面一般为500mm×900mm 混凝 -0019 [作者简介]卢著辉,工程师,国家一级注册建造师,E-mail:Luzhl001 图1地下车库结构平面 @126.c0m Fig.1 Underground garage structure plan [收稿日期]2013-07-19 万方数据 2014No.4 卢著辉等:某地下车库上浮事故中结构破坏机理分析与加固 47 2012年7月该地区遇到暴雨天气,场地地下水 位上升,地下车库内发生严重积水现象,最大水深 达2m.此时地下车库结构施工已完成,但上部尚未 完成覆土.现场人员急于抽取地下车库内积水,导 致地下车库内外瞬时最高水位差约3m 地下车库随 即发生不均匀上浮.目前场地地下水位已明显下 降,同时地下车库上部已完成覆土,变形情况得到 图2地下车库变形示意 Fig.2 Underground garage deformation 一定改善,但部分地下车库结构已发生损坏,需进...
2016年2月上 施工技术 第45卷第3期 CONSTRUCTION TECHNOLOGY 73 D0I:10.7672/sgjs2016030073 某地下室工程防水施工技术 张廷会,伍坪,杨德全2 (1.四川城市职业学院,四川成都610101;2.四川省建筑机械化工程公司,四川成都610051) [摘要]四川城市职业学院眉山校区行政楼地下室工程采用H水泥基渗透结晶防水施工技术、结合该工程实践, 介绍了防水施工准备、施工流程、关键施工技术以及质量保证措施等相关施工关键措施.实践证明,该地下工程防 水效果良好,保证了地下室工程安全施工和安全运营. [关键词]防水工程;地下室;水泥基渗透结晶;防水材料;施工技术 [中图分类号]TU761.11 [文献标识码]A [文章编号]1002-8498(2016)03-0073-03 Construction Technology of Basement Waterproofing in a Project Zhang Tinghui' Wu Ping' Yang Dequan2 (1.Urban Vocational College of Sichuan Chengdu Sichuan 610101 China:2.Sichuan Construction Mechanization Engineering Company Chengdu Sichuan 610051 China) Abstract:Urban Vocational College of administration building basement using GH cementitious capillary crystalline waterproofing construction technology.Combining the engineering practice waterproof construction preparation waterproof construction process the key construction technology and key measures related to construction quality assurance measures are introduced.Practice has proved that the waterproofing technology of basement has a good effect ensuring the safety of basement construction and safe operation. Key words:waterproofing;basement;cementitious capillary crystalline;waterproofing materials; construction 0引言 道与眉州大道交叉口东南角,学校占地面积约50万 水泥基渗透结晶型防水材料(cementitious m2(750亩),学生规模9000人.该校区行政楼地 capillary crystalline waterproofing materials CCCW)中 下工程的防水等级为二级. 含有的活性化学物质通过水向混凝土内部渗透,在 四川地区地下水丰富且地面降水量大,地表水 混凝土中形成不溶于水的结晶体,填塞毛细孔道,向下渗透及地下水向上渗透,构成了一个比较活跃 从而使混凝土致密、防水.这种防水材料...
[关键词]地下工程;半逆作法;支护;施工技术 【中图分类号】TU753.6[文献标识码】A[文章编号]1002-8498(2013)07-0015-04 Semi-reversedConstructionMethodofanUndergroundCommercialStreet Cao Hexi,Kong Ming,Deng Liping,Zhuang Niebin (Jiangsu Yizheng Construction Co.,Lad.,,Yizheng,Jiangsu211400,China) Abstract;An underground mercial street in Shenyang adopted a semi-reversed construction method, i.e. the boundary pile wall protection and rof plate were constructed first and the wall columns and bottom plates was constructed with the top-down method.With respect to the construction difficulties of this project, the corresponding construction process and construction method are presented in detail in this paper. The advantages and disadvantages of the semi-reversed construction method were summarized. Application of the semi-reversed construction technology effectively protected the normal operation of the underground shield tunnel and metro, shortened the time of traffic interruption,and obtained obvious social and economic benefits. Key words:underground; semi-reversed construction method; supports; construction 1工程概况1)中华路为商业街,两侧建筑物密集,距离本 沈阳朗勤商道中华路地下商业街工程地处沈工程的主体结构较近,施工场地狭小,上部各种管 阳市和平区,位于已建成通车的沈阳地铁1号线沈线密集,需采用围护结构有效支护。
2013年11月下 施工技术 第42卷第22期 CONSTRUCTION TECHNOLOGY 109 D0I:10.7672/9gjs2013220109 某地下人防工程深井降水井口封堵施工技术 陈杏祥 (应天职业技术学院管理工程系,江苏南京210046) [摘要]以某市地下人防工程基坑深井降水为例,为有效降低地下水位,利于深基坑的开挖,确保周边大桥、桥头、 主干道和河堤的安全,在尽量减少深井数量的同时,将全部降水深井布置在建筑物基础底板中间,但这给降水结束 后井口的封堵带来了一定的困难.结合现场工况采取了一种基于深井降水“先置后堵”的井口封堵方法,该种封堵 方法分为3步:一是钢管的制作与预埋;二是预制井口封堵配件;三是封堵配件的安装与封堵,从而避免了因降水 封口处理不当出现的建筑物渗漏水现象. [关键词]地下工程;基坑;降水;施工技术 [中图分类号]TU753.66[文献标识码]A [文章编号]1002-8498(2013)22-0109-03 Construction of Wellhead Shutoff for Deep Well Dewatering in an Underground Civil Air Defence Chen Xingxiang (Department of Management and Engineering Yingtian College Nanjing Jiangsu 210046 China) Abstract:Based on excavation of deep well dewatering in the city of an underground civil air defence author analyzes the method which may lower the groundwater levels effectively help the deep foundation excavation and ensure the safety of the surrounding bridge the main road and the embankment.While minimized the quantities of deep well all precipitation deep wells are arranged in the middle of the foundation slab of the building but this brings some difficulties for wellhead shutoff after the precipitation.Combined with field conditions to take a deep well dewatering first set after shutoff in the wellhead shutoff the closure method is divided into three steps which are produce and embedding steel pipe first;prefabricating wellhead shutoff accessories second;shutoff accessories installation and sealing thirdly these may be avoid undue buildings precipitati...
[关键词]加固;砖混结构;抗震;构造柱;钢筋网水泥砂浆;设计 [中图分类号】TU746.3[文献标识码】A【文章编号】1002-8498(2015)16-0023-04 StrengtheningDesignofaBrickStructureofExisting Primary School Building JiaWenfeng,ZhangChunsheng,FanJixi,DingYahong (CollegeofCivil Engineering,He'nanPolytechnicUnitersity,Jiaozuo,He'nan454000,China) Abstract:Based on characteristics of destruction,according to relevant seismic design of building,a brick structure of existing primary school building has been carried on the ways of adding bundled structural column,the mortar surface layer of steel mesh,angle steel on the end of the floor to conduct strengthening design. Through calculation and analysis of the strengthening scheme,the ways can service life of the structure. Key words:strengthening;brick buildings;aseismic; structural column;mesh reinforcement cement mortar; design 20世纪七八十年代,砖混结构因其构造简单、构进行抗震鉴定与加固(。
2013年8月下 施工技术 第42卷第16期 CONSTRUCTION TECHNOLOGY 19 D0I:10.7672/sgjs2013160019 某图书馆加固设计与施工 张向东 (河南省建设集团有限公司,河南郑州450002) [摘要]某新建图书馆为5层框架结构,建筑面积13334.85m2 混凝土为现场搅拌,其强度等级达不到设计要求, 为保证使用安全,采取局部拆除返工加大截面法加固和调整使用功能等综合加固方案,对混凝土框架柱、梁、板和 楼梯等构件进行了加固,工程完成后进行了静载实荷试验,并使用探地雷达检测地基缺陷.重点介绍了结构检测、 实荷试验、加固设计和施工等. [关键词]加固;结构试验;设计;施工 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2013)16-0019-04 Reinforcement Design and Construction of a Library Zhang Xiangdong He'nan Province Construction Group Co.Lad.Zhengzhou He'nan 450002 China) Abstract:The gross area of a new library with five-layer frame structure is 13 334.85m2.Its concrete is mixed on the construction site and the strength grade can not meet the design requirement.In order to ensure safety parts of structure are dismantled and reworked.Besides that lots of prehensive reinforcement plans like section increasing method are used to reinforce ponent such as concrete frame column plate stair and so on.The static load test is done in site and ground-penetrating radar is also used to detect the flaws in the foundation after the project is pleted.Structure detection paction test reinforcement design and construction etc.are mainly analyzed in this article which would accumulate experience for the detection and reinforcement of the concrete frame structure and loading test. Key words:strengthening;testing;design;construction 1工程概况 梯等受力构件混凝土强度等级达不到设计要求 某图书馆为新建工程,建筑面积13334.85m2 (C30) 为提高结构承载力,保证使用安全,对混凝土 混凝土框架结构,独立基础,地上5层,标准层层高 框架柱、梁、板和楼梯板等构件进行了加...
2011年2月 施工技术 第40卷第4期 CONSTRUCTION TECHNOLOCY 67 某国际承包工程汇率风险分析及应对措施 江永建 (中冶集团武汉察研究院有限公司,湖北武汉430080) [摘要]越南某国际承包工程,由于遭受汇率风险,经济损失较大,得出在国际承包工程中,规避汇率风险的重要 性.从项目合问和所处背景,企业自身情况和企业所处外部环境等方面分析了汇率风险发生的原因,及在复杂环 境条件下,企业应该采取的汇率风险应对措施,从而有利地减少或避免汇率浮动给工程带来的损失. [关键词]国际承包工程;汇书风险;应对指施 [中图分类号]TU-920.5;TU-923.48 【文献标识码]A[文章编号]1002-8498(2011)04-0067-02 Analysis of Exchange Rate Risk and Countermeasures for an International Contract Project Jiang Yongjian Wuhan Surveying-geotechnical Research Institute of China Metallurgical Seience and Industry Group Co.Lid.Wuhan Hubei 430080 China) Abstract:Because of the risk of exchange rate the international contract project in Vietnam suffers a great finacial loss so it is important to avoid exchange rate risk in the international contract project.The causes for exchange rate risk are analyzed on the project contract and its background corporation conditions and its external environment.In the plicated circumstances the corporation should make corresponding measures to avoid the exchange rate risk and reduce the loss to a certain degree. Key words:international contract project;exchange rate risk;countermeasure 1工程概况 慢,2008年5月10日,才完成全部工作量的50%, 某工程位于越南人民共和国海防市境内,合同2008年12月9日全部工程完工,2009年1月12日 于2007年6月签订,合同约定主要条款为:①工程进行竣工验收,随后于2009年5月18日完成工程 内容为电厂主厂房施工工程;②承包方式为包工包结算审计,工程结算总价为人民币5280万元. 料,工期6个月,合同总造价为人民币5050万元;③ 工程总收款中,人民币所占部分为25080000 工程款支付比例为:人员、设备进场后10d内支付合元,越南货币所占部分为49286891330越南盾.按 同价10%的备料款,完成全部工作量的50%时,再合同结算汇率,越南货币部分可折算为人民币 支付合同价款的30%,全部工程完工时,支付至合250799...
施工技术 2013年7月下 18 CONSTRUCTION TECHNOLOGY 第42卷第14期 D0I:10.7672/sgjs2013140018 某商业综合体大跨度钢结构连廊吊装技术 寿建军,汪洋2,孙占利1,沈伟星1 (1.浙江八达建设集团有限公司,浙江杭州310002; 2.杭州市余杭区土木建筑学会,浙江杭州311100) [摘要]浙江省杭州市某商业综合体结构形式为钢筋混凝土框架结构,2幢综合体之间采用钢桁架连廊连接.该钢 结构连廊具有构件跨度大、桁架高度高、吊装高度高、单福桁架重等特点.通过对比分析分段自承式和高空悬挂式 散装吊装方案的施工流程和力学性能,同时采用有限元软件分析主要受力构件安装应力分布和关键节点处弯矩值 变化情况,最终选用高空悬挂式散装施工方案. [关键词]钢结构;连廊;桁架;吊装 [中图分类号]TU758.1 [文献标识码]A [文章编号]1002-8498(2013)14-0018-04 Large-span Steel Gallery Hoisting Technology for a Business Building Shou Jianjun' Wang Yang? Sun Zhanli' Shen Weixing' (1.Zhejiang Bada Construction Group Co.Ltd.Hangzhou Zhejiang 310002 China; 2.Yuhang District Hangzhou Institute of Civil Engineering and Architecture Hangzhou Zhejiang 311100 China) Abstract:A business building in Hangzhou Zhejiang has two reinforced concrete frame structures which is connected with steel truss gallery.This steel gallery has characteristics of large span high altitude of truss and hoists large weight of single truss and so on.By parison of the construction processing and mechanical performance of segmental self-bearing and suspended assembly at high altitude meanwhile finite element analysis was used on installation stresses of the main ponents and the moments of the key joints and suspended assembly at high altitude was selected. Key words:steel structures;gallery;trusses;hoists 1工程概况 车道路的中间.本商业综合体建筑整体如图1 本工程位于浙江省杭州市余杭区乔司镇,总建 所示. 筑面积181922m2 地上建筑面积136024m2 地下 建筑面积45898m2.本工程由2幢6层的商业综合 体组成,地下2层,分别位于01省道及地铁1号线 两侧.综合体结构形式为钢筋混凝土...
2016年7月上 施工技术 第45卷第13期 CONSTRUCTION TECHNOLOGY 59 D0I:10.7672/5js2016130059 某商业楼深基坑工程监测与数据分析 杜娅妮 (上海建峰职业技术学院,上海201900) [摘要]探讨监测技术在某商业楼深基坑施工安全性分析中的应用.介绍了基坑监测方案,结合监测结果分析桩 身水平位移及内力、错索轴力、四周建筑物沉降的数据,总结一般变形规律.结果显示,基坑施工的各项指标皆符 合相关规范要求. [关键词]深基坑;支护;位移:沉降;监测 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)13-0059-05 Deep Foundation Excavation Monitoring and Data Analysis on a Commercial Building Du Yani Shanghai Jianfeng Vocational and Technical College Shanghai 201900 China) Abstract:This paper discussed on monitoring technology in deep foundation excavation construction of a mercial building in safety analysis applications.Foundation excavation monitoring scheme was introduced based on monitoring and analysis of pile horizontal displacement and internal forces anchor axial force surround building settlement corresponding deformation law were summarized.The results show that the indicators of foundation excavation construction are in pliance with the relevant regulatory requirements. Key words:deep foundation excavation;supports;displacement;settlement;monitoring 1工程概况 2工程地质条件 某工程为改建的商业楼,位于城市核心区,将 基坑包含人工堆积层、新近沉积层、第四纪沉积 原有建筑拆除重建.在保留原有基坑基础上,扩大 层3类岩层,细分为12层.浅层土主要为细砂与粉 基坑面积,开挖面积6010m2 开挖深度27.8m.工 质黏土:10~20m范围分布中砂、卵石及黏质粉土等: 程环境条件复杂,周边管线密集,有排水、排污及供 20~30m范围内分布有细砂、中砂及粉质黏土等. 电、供热等系统.基坑周边实际状况如图1所示. 基坑场地存在3层地下水,如表1所示.基坑 场地上层积水分布不均,水位动态变化复杂,水量 北 商业大厦 西—东 变化大.此层水靠地面降水补给,经蒸发进行耗 南 散,补给动态为渗入-蒸发型.层间水年水位变化范 建筑红线 围1~2m 水位较稳定.此层水经大气降水渗人或 友谊大街 服装城 径流等补给,经径流排出,补给动态属渗入径流型. 基坑 承压水年水位变化范围2~3m 冬季水位相对较高, 过街 ...
【关键词】高层建筑;安装工程;支撑;胎架;有限元分析;施工技术 [中图分类号】TU758.11 【文献标识码】A [文章编号]1002-8498(2017)08-0083-05 Construction Technology of Large SpanHeavy Steel Truss of a CommercialCenterHighRoof SU Kai,ZHANG Yimin,ZHANG Erlong,LEI Zhiqiang (Shenzhen Branch of China Construction Second Engineering Bureau Co.,Iud.,Shenzhen,Guangdong518048,China) Abstract;The 45m span heavy steel truss was set up in the 329.4m roof of the Hanguo City Commercial Center.The stel truss structure is irregular,the quality is large,and the span is big,so the construction is difficult.In the process of construction, the construction technology of standard lattice type support frame, aerial bottom part beam, BIM simulation preassembly, stress and strain monitoring, and finite element analysis and so on were adopted, the installation of heavy steel truss was pleted with high efficiency and high quality. Key words:tall buildings;installation; supports;frames; finite element analysis; construction 1工程概况 329.400 -塔楼屋盖 1.1建筑概况 汉国城市商业中心大厦位于深圳市福田区,大 60F 厦主要为酒店、商业、写字楼、文体活动设施,建成 后将成为华强北新地标,项目总建筑面积为 45F 163745m²,地上共78层,地下5层,建筑总高度为 避难层和设备间 30F 329.4m,钢结构用量2万t。
[关键词]深基坑;监测;位移;沉降 [中图分类号】TU433 【文献标识码】A 【文章编号】1002-8498(2014)04-0101-04 Monitoring and Analysis of a Deep Foundation Excavation Sha Aimin',LuFanren',Shao Hongcai',Wang Xiaodong” (1.Department of Civil Engineering,Yangzhou Polyechnic College,Yangzhou,Jiangsu 225009,China; 2.Transportation Bureau of Yizheng,Yizheng,Jiangsu 211400,China ) Abstract;Technology of deep foundation excavation in soft soil area is the one of the key research contents in project fields. In order to insure the safety of the deep foundation excavation, deformation monitoring on deep foundation excavation is an important content of information construction. Taking a deep foundation excavation project in Ningbo as an example,according to the analysis of certain monitoring scheme and the obtained data, the change rules of horizontal displacement,deep horizontal displacement, sedimentation and horizontal displacement of each monitoring point on the surrounding ground surface are analyzed in the excavating process. The monitoring results confirm the deformation control design of the supporting structure is reasonable. Key words;deep foundation excavation; monitoring; displacement; settlement 在软土地区进行深基坑开挖,变形问题受到了细分析,研究了施工过程中基坑的水平变形、周围 越来越多的重视。
施工技术 2014年11月上 96 CONSTRUCTION TECHNOLOGY 第43卷第21期 D01:10.7672/sgjs2014210096 某叶式旋转楼梯施工技术 张明禄1,董毅,张峰2,王力尚3 (1.青建集团股份公司,山东青岛266071;2.青岛品城设计装饰工程有限公司,山东青岛266000; 3.中建中东有限责任公司) [摘要]由于涉及造型及功能的需要,旋转楼梯的设计样式多种多样,给施工带来许多不便,如果支模方法不当,有 时构件的误差不符合规范的规定,而且也不符合设计造型等的要求.结合阿尔及利亚某旋转楼梯工程,采用现浇 式整体浇筑旋转楼梯及其固定轴,改变以往旋转楼梯先浇筑固定中轴柱,后将预制楼梯踏步固定在中轴柱的方法, 既能保证旋转楼梯的整体性,又能使旋转楼梯的外观达到预制的效果,经济、美观,符合业主的要求. [关键词]混凝土;旋转楼梯;叶式;周定轴;施工技术 [中图分类号]TU755.2 [文献标识码]A[文章编号]1002-8498(2014)21-0096-03 Construction Technology of Some Leaf Spiral Staircase Zhang Minglu' Dong Yi' Zhang Feng2 Wang Lishang (1.Qingjian Group Co.Lid.Qingdao Shandong 266071 China;2.Qingdao Jingcheng Design and Decoration Co. Ld.Qingdao Shandong 266000 China;3.China State Construction Engineering Corporation Middle East L.L.C.) Abstract:The spiral staircase has many modes because of the need of shape and function so it brings difficulties to construction.If the formwork is supported with improper method the spiral staircase would not meet the requirements of codes and design.Based on some spiral staircase project in Algeria the method pouring the integral spiral stairease and axis is adopted instead of traditional method that pouring the axis column firstly and then fixing the prefabricated stairease.The new method ensures the integrity of spiral staircase and the prefabrication appearance effect with good economic benefits. Key words:concrete;spiral staircase;leaf;axis;construction 1工程概况 行政楼B5段处,共计2个,旋转楼梯从第1层到第 奥兰工学院3000座工程位于阿尔及利亚奥兰2层旋转270°,从第2层到第3层旋转36...
施工技术 2015年2月上 96 CONSTRUCTION TECHNOLOGY 第44卷第3期 D0I:10.7672/5js2015030096 某发射工位导流槽绳锯切割拆除技术 刘世斌,杜峰峰,张笈玮 (中国人民解放军63926部队,北京100192) [摘要]某发射工位导流槽为地下大体积钢筋混凝土异形结构,拆除时对邻近建筑物的保护要求严格、同步交叉作 业多,拆除难度大,常规的爆破、机械拆除方法难以满足要求.通过试验、分析,对绳锯切割机械进行了改进,研发 了双发动机同步双轴双轮驱动技术、新型平稳高强螺纹收线装置等多项关键技术和装置,成功解决了该技术难题. [关键词]混凝土;导流槽;大体积混凝土;拆除:绳锯 [中图分类号]TU745.4 [文献标识码]A [文章编号]1002-8498(2015)03-0096-04 Wire-saw Dismantlement Technology on a Gasflow-guided Channel of Launching Station Liu Shibin Du Fengfeng Zhang Jiwei The 63926 Troop of Chinese People's Liberation Army Beijing 100192 China) Abstract:Gasflow-guided channel of launching station is an underground special-shaped structure of mass concrete and it is very hard to dismantle because of strict requirement on protection for the nearby buildings and a lot of cross-operation at the same time.Dismantled by regular demolition or machinery is unrealistic.Through experiment and analysis the wire-saw machine is improved.This difficult problem is solved by the research and development of multi key technology and device such as synchronous biaxial wheel drive technology new smoothly high-strength thread taking-up device and so on. Key words:concrete;gasflow-guided channel;mass concrete;demolition;wire-saw 1工程概况 在某航天发射场改造工程中,需要在不完全拆 1800 除发射塔的情况下,对发射塔邻近的导流槽构筑物 12140 台阶 30. 进行拆除.导流槽长45.62m 宽10m 深10.87m 1035010870 为大体积钢筋混凝土结构.导流槽主体结构配筋 260016000 18830 790 25 密度大、强度高,钢筋型号大部分为d25和22,混 a导流槽剂面 凝土强度等级为C35:槽内壁、发射台面均为耐火混 凝土,厚度分别为150 300mm:槽底板、槽壁和顶板 厚度均在2m左右.导流槽边缘距离发射塔(塔体 质量约1...