施工技术 2012年5月下 54 CONSTRUCTION TECHNOLOGY 第41卷第365期 嘉盛购物中心外广场防水技术 宋向东 (广州越市职业学院城市建设工程系,广东广州510405) [摘要]针对建筑外广场面积较大,防水层施工要求较高的特点,结合嘉盛购物中心工程实践,述了建筑外广场 防水施工工艺流程、材料选用、主要施工技术措施和质量控制要点,确保了防水工程的施工质量.经检查验收,未 发现渗漏,高质量高效率地完成了防水工程施工,效果良好. [关键词】防水工程;防水卷材;施工技术 [中图分类号]TU761.11 [文献标识码]A[文章编号]1002-8498(2012)10-0054-02 Waterproofing of Jiasheng Shopping Center Square Song Xiangdong Department of City Construction Engineering Guangzhou City Polytechnie Guangzhou Guangdong 510405 China) Abstract:In view of large area of the construction center square and the high construction requirements of waterproof layer bining with Jiasheng Shopping Center project the process of waterproofing construction materials choice main construction measures and quality control points are described.The construction quality is ensured by above measures.The result shows that the square has a good waterproofing effect and the construction quality is ensured without leakage. Key words:waterproof;waterproofing membrane:construction 1工程概况 涂料相比,优势在于:第1遍(底涂)涂刷时加人少 嘉盛购物中心建筑面积6万m2 占地约1.5万 量渗透剂,能使该涂料充分渗透到水泥砂浆、混凝 m2 建筑总层数6层,框架结构,地下室设有一层停 土毛细孔,使混凝土、水泥砂浆结构更加密实,不易 车库.建筑外广场面积为5000m2 防水层采用渗水,在充分渗透过的基面上涂刷多遍防水浆料, 5mm复合防水,其中2mm厚SK聚合物水泥涂料1很快形成多层结膜,且与基面黏结牢固,形成整体 道,两层复合1.5mm厚Psylic PVC防水卷材. 坚韧的柔性防水层. 2主要施工工艺 SIK防水浆料(I型)主要性能指标(参照《聚 混凝土基层→20mm厚纤维加强1:2.5水泥 合物水泥防水涂料》JC/T894一2001)如下:①固体 砂浆找平层→2.0mm厚SIK聚合物水泥防水涂料含量65%;②干燥时间表干时间≤4h 实干时间 →1.5mm厚PvC复合防水卷材→1.5mm厚8h;③拉伸强度1.8MPa;④断裂伸长率200%;⑤潮 Psylie PVC防水卷材(建议将隔离层放在隔热层上)湿基面黏结强度≥0.5MPa;⑥低温柔性要求 →20mm...
2016年5月上 施工技术 第45卷第9期 CONSTRUCTION TECHNOLOGY 39 D0I:10.7672/sgj82016090039 哈尔滨市华南城3号交易广场塔式起重机拆除技术 孟昭,于雷,杨红刚 (中建三局集团有限公司,黑龙江哈尔滨150000) [摘要]哈尔滨市华南城3号交易广场在工期紧、建筑物中心塔式起重机不能用周边塔式起重机直接拆除等困难 下,利用屋面式起重机拆除塔式起重机.在施工前综合设计分析屋面式起重机的安装位置、地下室顶板加固、各台 塔式起重机的先后拆除顺序,最终确保塔式起重机安全拆除.重点介绍塔式起重机拆除的设计思路、安装屋面式 起重机及拆除时的关键技术. [关键词]安装;建筑机械;塔式起重机;拆除;施工技术 [中图分类号]TU758 [文献标识码]A [文章编号]1002-8498(2016)09-0039-02 Demolition Technology of Tower Crane at No.3 Exchange Plaza of Huanancheng in Harbin Meng Zhao Yu Lei Yang Honggang China Construction Third Engineering Bureau Co.Ltd. Harbin Heilongjiang 150000 China) Abstract:Harbin No.3 Exchange Plaza tower cranes can not be demolished by the around tower cranes directly.The roof hanging cranes are used to demolish the tower crane.Installation location of roof hanging cranes basement roof reinforcement removal order are analyzed before construction.The design ideas of demolition of tower crane and installation and demolition of the roof hanging cranes are introduced in detail. Key words:installation;machinery;tower cranes;demolition;construction 1工程概况 重机安装→塔式起重机配重拆除一→塔式起重机第1 哈尔滨市华南城3号交易广场为哈尔滨市重点 节起重臂拆除→塔式起重机第2节起重臂拆除→塔 建设的商贸物流项目.建筑总高度22.3m 建筑面 式起重机平衡臂拆除→塔式起重机塔帽拆除→塔 积达30万m2 其中地下1层、地上4层,东西向长 式起重机回转拆除→塔式起重机标准节拆除→ 370m 南北向长176m 建筑基底面积达6.4万m2. QTZ400屋面式起重机拆除. 工程为框架结构,具有基底面积大、超长无缝等施 2.2塔式起重机拆除操作要点 工难点,塔式起重机布置时需充分考虑覆盖问题,2.2.1安装QTZ400屋面式起重机 故需在建筑中心布置1台TC5610型塔式起重机 QTZ400屋面式起重机支承于主体屋面,设计屋 (即3号塔式起重机).而传统拆除思路利用汽车 面式起重机中心与建筑结构柱中心重合,在进行 式起重机在建筑物周围进行拆除,通过对吊转半径 QTZ400屋面式起重机安装前,利用通用...
2015年10月下 施工技术 第44卷第20期 CONSTRUCTION TECHNOLOGY 55 D0I:10.7672/sgjs2015200055 哈尔滨大剧院钢结构设计施工关键技术 陈桥生,裴志清,李鸿骏 (上海宝冶集团有限公司,上海200941) [摘要]随着国民经济的飞速发展和国民素质的整体提高,大型复杂剧院越来越多,其结构形式也越来越复杂.以 哈尔滨大剧院为例,重点介绍了如何根据剧院钢结构复杂多变的特点,并结合现场实际情况,采用合理的设计施工 技术,细分单元、化繁为简、化难为易,解决复杂异形结构施工繁琐、安装精度高、施工难度大的难题. [关键词]钢结构;网壳;网架;设计;施工 [中图分类号]TU311.41;TU758 [文献标识码]A [文章编号]1002-8498(2015)20-0055-04 Design and Construction Key Technologies for Steel Structure of Harbin Theatre Chen Qiaosheng Pei Zhiqing Li Hongjun (Shanghai Baoye Group Co. Lid. Shanghai 200941 China) Abstract:With the rapid development of national economy and the overall increase of national quality more and more large plex theaters appear and the structure form bees more and more plicated.Taking Harbin Theatre as an example this article mainly introduces how to adopt reasonable design and construction technologies such as unit subdivision and simplification according to the plex and changeful characteristics of theatre steel structure in bination with the actual situation to solve the problem of tedious construction and high installation accuracy and great construction difficulty in plex shape structure. Key words:steel structures;shells;space truss;design;construction 1工程概况 哈尔滨大剧院位于哈尔滨市松北区文化中心 岛内,是黑龙江省会哈尔滨市的地标性建筑,包括 1527座大剧院、385座小剧场、售票厅等.大剧院 地上8层,地下1层,主舞台台仓及乐池部分为地下 2层.小剧场地上3层,地下1层,舞台台仓地下2 层.建筑造型奇特,剧院屋顶呈自由曲面,结构形 图1哈尔滨大剧院建筑效果 式十分复杂,大、小剧场屋顶钢结构之间以温度缝 Fig.1 Architectural effect of Harbin Theatre 断开.根据剧场建筑、功能的分区,大剧院屋顶钢 1)结构形式多样,种类齐全哈...
2015年12月下 施工技术 第44卷第24期 CONSTRUCTION TECHNOLOGY D0I:10.7672/sgjs2015240005 哈尔滨万达茂滑雪乐园东区钢屋盖滑移技术 杨文侠,丁剑强,孔鹏2,蔡蕾,宋文杰2,夏树伟2 (1.江苏沪宁钢机股份有限公司,江苏宜兴214231; 2.上海同新土木工程设计咨询有限公司,上海200092) [摘要]主要介绍哈尔滨万达茂滑雪乐园东区屋盖高胎架、高支架、大跨度、带坡度累积滑移施工技术的运用.在 方案设计过程中,重点对滑移施工全过程支架及胎架的强度及稳定进行分析,采用同步滑移技术进行施工全程控 制与调整,确保结构稳定、受力合理. [关键词]钢结构;屋盖;高支架;胎架;滑移 [中图分类号]TU758.11 [文献标识码]A[文章编号]1002-8498(2015)24-0005-03 Sliding Technology for Eastern Steel Roof in Harbin Wanda Mall Skiing Paradise Yang Wenxia' Ding Jianqiang' Kong Peng? Cai Lei' Song Wenjie2 Xia Shuwei (1.Jiangsu Huning Steel Mechanism Co.Ltd. Yixing Jiangsu 214231 China; 2.Shanghai Tongxin Civil Engineering Design Consulting Co.Ltd.Shanghai 200092 China) Abstract:The application of sliding technology are mainly introduced for eastern steel roof of Harbin Wanda Mall Skiing Paradise with high jig high support structure large span and slope.During the design of the project the analysis of strength and stability of jigs and support structure are mainly important in the whole process of the sliding construction.The control and changes of the whole process is carried out by using the synchronous sliding technique which ensures the structure stable and the force is reasonable. Key words:steel structures;roofs;high support;jigs;sliding 1工程概况 西区钢结构 中区钢结构东区钢结构 哈尔滨万达茂滑雪乐园建成后将是世界上最 大的室内滑雪场,位于哈尔滨市松北区.该项目结 构最高标高为117m 总长约500m.整体结构由东 区、中区、西区3部分组成(见图1),从西向东呈弧 度上升,通过伸缩缝断开. 图1滑雪乐园结构分区 东区屋盖为大跨度巨型桁架结构,总重约 Fig.1 Steel structure partion of skiing paradise 2500t.主要由横向主桁架、次桁架、纵向桁架、...
施工技术 2011年8月下 30 CONSTRUCTION TECHNOLOGY 第40卷第347期 呼和浩特东站钢结构施工技术 杨智燕 (中铁建工集团有限公司北京分公司,北京100070) [摘要]结合工程情况,呼和浩特东站站房工程通过采用先施工钢结构,再进行下部钢筋混凝土结构施工的方案, 解决了钢结构施工难题.同时,通过对屋盖弯顶、站房屋盖钢结构以及球面网壳桁架等进行合理分区、分段,大大 提高了钢结构安装效率,确保了施工质量和施工安全. [关键词]钢结构;安装;屋盖;弯顶;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2011)16-0030-03 Construction Technology of Steel Structure for Hohhot East Railway Station Yang Zhiyan (Beijing Branch of China Railsway Construction Engineering Group Co. Lid.Beijing 100070 China) Abstract:Based on the engineering situation the method of constructing steel structure first and then constructing reinforced concrete in bottom is adopted in Hohhot East Railway Station house.Problem of steel structure construction is solved.Meanwhile through reasonable area and section division to roof dome steel structure and spherical grid frame installation efficiency is improved and construction quality and safety are ensured. Key words:steel structures;installation;roof;domes;construction 1工程概况 中央区域为球面屋盖结构,直径81m 中间开1 新建呼和浩特东站总建筑面积102189.38m2 个12m圆形开口,沿屋盖径向按圆心角7.5°间距设 其中客运站房建筑面积43543m2.主站房为框架结置.桁架由箱形截面构件组成,用于标高25.100~ 构钢结构,分为出站层、站台层、高架候车层3层,31.400m屋面.该区域柱网呈正三角形布置,柱距 局部4层,建筑高度45.5m(见图1). 62.354m.平面布置采用主次桁架,其中支承于柱 上的主桁架高度为4.2m 上、下弦和腹杆均采用箱 形截面.支承于主桁架上的次桁架高度为4.2m. 2工程特点及难点 本工程主体为钢筋混凝土结构和钢结构,建筑 物每个部分相对独立,通过土建结构连接成一个整 体.整个火车站站房钢屋架呈曲面,各点标高不一, 主要构件超长,跨度大,对吊装提出很高要求. 2.1结构施工难度大 图1呼和浩特东站 本工程结构尺寸大(89.65m×346.542m) 如 Fig.1 Hohhot East Railway Station 果按常规施工方法,先进行下部钢筋混凝土结构施 站房钢结构主体呈“莲花”状,主要包括球面屋 工,再进行钢结构施工难...
2012年10月上 施工技术 第41卷第374期 CONSTRUCTION TECHNOLOGY 65 后装可拆式钢抱箍桩柱塔式起重机基础施工技术 陆建飞,刘建平,张旭洪 (中天建设集团有限公司,浙江杭州320000) [摘要]桩柱钢抱箍式混凝土承台塔式起重机基础是一种新型塔式起重机基础结构体系.它是由混凝土承台、钻 孔灌注桩和桩身的后装钢抱箍组成的塔式起重机基础结构,和钢管桩塔式起重机基础类似,该塔式起重机基础不 仅可为土方开挖和混凝土底板浇筑提供垂直和水平运输的机械,而且还可以加大塔式起重机的工作半径,从而节 省工期、提高工效.除此之外,该施工技术在施工方面却更为简单,设计更加合理,还具备成本投人低、可循环利用 的优势. [关键词]基础;塔式起重机;钢抱箍;承台;钢板止水环;施工技术 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2012)19-0065-03 Construction Technology of Tower Crane Foundation with Afterinstallation Detachable Steel Embrace Loop Pile Lu Jianfei Liu Jianping Zhang Xuhong (Zhongtian Construction Group Co. Ltd. Hangzhou Zhejiang 320000 China Abstract:Concrete pile cap crane foundation with steel embrace loop pile is a new type of crane foundation structural system.It consists of concrete pile cap screw holes filling pile and the steel embrace hoop on pile shaft.Similar to steel pipe piles crane foundation this crane foundation structural system not only can provide vertical and horizontal transportation machinery for casting concrete slabs and soil excavation but also can increase the work radius of crane tower which results less construction time and higher efficiency.Compared with other construction technologies the construction technology is featured by simpler operation more reasonable design.It also obtains the advantages of as low cost and recyclable. Key words:foundations;tower crane;steel embrace loop;pile cap;steel water stop ring;construction 1工程概况 混凝土承台塔式起重机基础,使立塔工作可以在土 天津滨海国泰大厦工程位处天津市响螺湾中方开挖之...
施工技术 2012年11月下 30 CONSTRUCTION TECHNOLOGY 第41卷第377期 后张法现浇预应力箱梁起拱与下挠的施工控制 贺洪儒,宋伟明,邱永会 (中交二航局第二工程有限公司质量检测所,重庆400016) [摘要]针对现浇箱梁施工各环节产生结构起拱和下挠影响因素的研究,得出通过采取预设一定反拱度、采取高性 能混凝土和高性能浆液、提高桥梁钢筋及预应力体系的安装定位精度以及混凝土和孔道压浆的精细化施工等措 施,减少混凝土的收缩徐变,提高混凝土匀质性和整体性能,使箱梁起拱和下挠控制在合理范围内,使桥梁结构的 耐久性和使用寿命得到保证. [关键词]混凝土;箱梁;预应力;起拱;下挠;施工控制 [中图分类号]TU755;TU448 [文献标识码]A [文章编号]1002-8498(2012)22-0030-03 Construction Control of Arching and Downward Deflection for Cast-in-place Box-girder with Post-tensioning Method He Hongru Song Weiming Qiu Yonghui (Inspected Department The 2nd Engineering Co.Ltd.of CCCC Second Harbour Engineering Co.Ltd.Chongqing 400016 China) Abstract:Based on the research of factors influencing the arching and downward deflection of cast-in- place box-girders at each construction stage a series of construction measures are proposed.They include pre-setting certain anti-arch degree use of high performance concrete and high performance slurry improving the installation and positioning accuracy of steel reinforcements and pre-stress system of the bridge refining the construction for concrete and duct grouting etc.These measures can reduce the concrete shrinkage and ereep improve the concrete uniformity and integrity control the arching and downward deflection of cast-in-place box-girders within a reasonable range and guarantee the bridge durability and service life. Key words:concrete;box-girder;prestressing;arching:downward deflection;construction control 1工程概况 配制具有良好体积稳定性的高性能混凝土,确 泰州长江公路大桥接线工程(泰...
施工技术 2015年4月上 90 CONSTRUCTION TECHNOLOGY 第44卷第7期 D01:10.7672/sjs2015070090 后压浆大直径超长钻孔灌注桩试桩工艺 柯洪,赵春宏1,朱宾勤1,吴翔2,王继华1,汪浩3 (1.中国能源建设集团云南省电力设计院有限公司,云南昆明650051;2.中国地质大学(武汉)工程学院, 湖北武汉430074;3.中国建筑第三工程局有限公司,湖北武汉430074) [摘要]以天津某超高层工程为例,介绍了大直径超长钻孔灌注桩试桩方法和工艺,包括试桩成孔工艺、灌注桩施 工工艺和试桩工艺.主要介绍了成孔施工过程的要求,双护筒的设计与施工,反力系统的设计与制作,监测系统设 置以及加载方式等. [关键词]桩基础;高层建筑;试桩;施工工艺;监测 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2015)07-0090-03 Pile Testing Process of Large Diameter and Super Long Bored Pile with Post Grouting Technique Ke Hong' Zhao Chunhong' Zhu Bingin' Wu Xiang2 Wang Jihua' Wang Hao (1.China Energy Engineering Group Yunnan Electric Power Design Institute Kunming Yunnan 650051 China; 2.Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China; 3.China Construction Third Engineering Bureau Co. Ltd.Wuhan Hubei 430074 China) Abstract:Based on an engineering practice in Tianjin this paper introduced testing pile process and methods of the large and super-long bored pile such as testing pile process pile-forming and testing. The requirement in pore-forming construction design and construction of double protecting sleeve reaction system design monitoring system setting and loading mode were introduced in detail. Key words:piles;tall buildings;testing piles;construction;monitoring 1工程概况 N 天津某117层塔楼建筑高度约597m 塔楼楼层 020508011014 平面呈正方形,大楼首层平面尺寸约67m×67m. D6 D9 D12试桩 塔楼基础为超长后压浆钻孔灌注桩,为了确定超长 01 04 07 010013 后压浆钻孔灌注桩的承载特性,需进行试桩试验. 图1D区试桩和锚桩分布示意 在塔楼布置场地内进行了2组试桩,第1组试桩区 Fig.1 Distribution of test...
施工技术 2014年7月下 6 CONSTRUCTION TECHNOLOGY 第43卷第14期 D0I:10.7672/sgjs2014140006 厚壁离心铸钢管稳定承载力与设计方法研究 郭彦林,王洁,林冰,朱博莉2 (1.清华大学土木工程系,北京100084;2.西安交通大学人居环境与建筑工程学院,陕西西安710049) [摘要]因为工程中常用的轧制及焊接两种钢管的制作工艺均无法实现厚壁钢管的制作,为此厚壁离心铸钢管在 建筑钢结构工程中便开始应用.广州新白云国际会议中心工程首次采用了厚壁离心铸钢管作为其主要受力构件. 目前,国内外关于厚壁离心铸钢管的研究成果很少,规范中也缺乏相应的设计依据.对厚壁离心铸钢管抗弯及偏 心受压构件进行了承载性能试验,研究了铸钢管的受力性能.结合有限元数值分析对厚壁离心铸钢管在偏心荷载 作用下的稳定极限承载力进行了研究,获得了偏心受压构件M承载力相关曲线,并与试验结果进行了对比.最 后给出了厚壁离心铸钢管轴心受压及偏心受压构件的稳定设计方法. [关键词]铸钢管;轴心受压;偏心受压;构件;承载力;稳定系数 [中图分类号]TU511.11 [文献标识码]A [文章编号]1002-8498(2014)14-0006-05 Instability Behavior and Design of Thick-walled Centrifugal Casting Steel Tubes Guo Yanlin' Wang Jie' Lin Bing' Zhu Boli2 (1.Department of Civil Engineering Tsinghua University Beijing 100084 China; 2.School of Human Settlements and Civil Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China) Abstract:Thick-walled steel tubes can not be manufactured very well by rolling and welding.Therefore thick-walled centrifugal casting steel tubes has found its application in the steel structure buildings for example it has been used as primary members in Gangzhou Baiyun International Conference Centre. Whereas little literature is available pertaining to the application and design of thick-walled centrifugal casting steel tubes.An experimental program is carried out to investigate the ultimate load-carrying capacity of thick-walled centrifugal casting steel tubes subjected to bending and eccentrically pression respectively.Afterwards the finite elem...
2012年10月下 施工技术 第41卷第375期 CONSTRUCTION TECHNOLOGY 89 华西龙希国际大酒店裙房多层曲面网架安装技术 周琦,蔡金志 (中建钢构阳光惠州有限公司,广东惠州510640) [摘要]华西龙希国际大酒店裙房为多层曲面网架结构,结构复杂、节点坐标定位要求高、施工难度大.根据结构 特点和现场条件,采用了满堂脚手架及集束钢管柱支撑、高空散拼与单元拼装相结合的安装技术、全站仪三维空间 坐标测量控制技术,完成了复杂造型的网架工程安装.同时介绍了网架临时支撑卸载的基本原则及方法、卸载工 艺及顺序、卸载变形监测等. [关键词]钢结构;裙房;网架;安装;卸载 [中图分类号]TU758.1 [文献标识码]A[文章编号]1002-8498(2012)20-0089-04 Installation Technology of the Multi-layer Curved Space Truss of the Podium in Long Wish Hotel International Zhou Qi Cai Jinzhi (China Construction Steel Structure Sunbright Huizhou Co.Ltd.Huizhou Guangdong 510640 China) Abstract:The podium of Long Wish Hotel International is a multi-layer curved space truss structure.The plex structural form imposes high requirements to node coordinate positioning and brings construction difficulty.According to the structural characteristics and field situation the full scaffolds and collected steel tube column were used for supports the bination of the partial assemblies at high altitude and unit assembly were used for installation and the total station instrument was used for measurement and controlling of the 3D coordinates.These technologies were shown to have successfully finished the construction of the space truss.This paper also introduced the basic principle and methods of the unloading of temporary supports for the space truss as well as the technique and sequence of unloading and unloading deformation monitoring. Key words:steel structures;podium;space truss;installation;unloading 1...
2012年4月上 施工技术 第41卷第362期 CONSTRUCTION TECHNOLOGY 101 动水动态信息化注浆模型的建立及初步应用 邓尤东 (中国建筑第五工程局有限公司,湖南长沙410004) [摘要]鉴于岩溶富水隧道地质条件的复杂性和动水分布的不均匀性,以重庆市轨道交通一号线中梁山隧道工程 帷幕注浆为例,以第6循环K25619一K25649段动态信息化注浆为研究对象,根据实际地质情况,建立了动水 动态信息化注浆模型.在中梁山隧道岩溶富水椎幕注浆过程中,以注浆模型为指导,探究信息化帷幕注浆堵水,寻 求一种新型的注浆思路,实现科学、文明、快速、高效注浆. [关键词]隧道工程;帷幕注浆;信息化;动态;模型 [中图分类号]U455.49[文献标识码]A [文章编号]1002-8498(2012)07-0101-02 Establishment and Application of Dynamic Information Grouting Model for Dynamic Water Deng Youdong China Construction Fifth Engineering Division Co.Lad.Changsha Hu'nan 410004 China) Abstract:According to the plicated geological conditions and inhomogeneity of dynamic water in karst rich water tunnel based on curtain grouting project of Zhongliangshan tunnel engineering in Chongqing Subway Line 1 dynamic information grouting model for dynamic water is set up.In curtain grouting progress based on grouting model the author inquiries a new thought of grouting in order to make grouting scientifically and efficiently. Key words:tunnels;curtain grouting;information;dynamic;model 随着我国铁路及公路建设的跨越式发展,复杂时很可能遇到管道型岩溶水突出,其特点是流量 岩溶区域隧道相继修建,预防及治理岩溶突水涌泥大、压力高,时有流砂,对施工危害大.该岩溶富水 等地质灾害成为隧道施工的主要技术难题12.中段地质条件复杂、岩体破碎、岩溶发育、地下水丰富 梁山隧道掌子面在施工桩号K25443处遇到了超且裂隙连通性较好.综合分析地质素描和超前地 大涌水,面对严峻的工期要求和涌水注浆处理难度质预报,该段岩层地质瞬息万变,掌子面前方的岩 高及周期长的压力,项目部加大对帷幕注浆理论技体质量密度不均,岩层破碎段呈带状分布,并分段 术的研究,引进动水动态信息化注浆模型,并结合出现,没有明显的分布规律;区域水体分布相对 现场施工实践不断动态完善注浆模型.以动态注不均. 浆模型优化注浆方案,指导注浆施工;同时通过分2动水动态信息化注浆模型建立 析整合施工过程数据,不断更新及完善注浆模型,2.1注浆模型建立依据 进而寻求一种新型的、符合工程实际的动水动态信 1)隧道注浆区四周围岩岩性不均...
施工技术 2013年1月上 108 CONSTRUCTION TECHNOLOGY 第42卷第1期 动态测量技术在沉管法隧道施工中的研究与应用 钟伟春,江巨桓,曾淦辉 (广州打捞局,广东广州510260) [摘要]移动干坞制造外形巨大且精度非常高的混凝土管段,因干坞平台及其承载施工的管段处于飘浮状态,无法 直接采用陆地测量技术进行施工放样,而拉线尺量等简易放样方法无法满足管段制作的精度要求.在首次采用移 动干坞新技术施工的广州仑头一生物岛隧道工程中,对动态测量技术的原理、方法及变形影响进行分析研究,利用 经纬仪的结构特点,采用特殊操作方法,实现了动态平台上的精密测量放样,解决了管段制作的精度控制难题. [关键词]隧道工程;沉管;动态测量;移动干坞;精度控制 [中图分类号]TU198;U452.13 [文献标识码]A [文章编号]1002-8498(2013)01-0108-05 Research and Application of Dynamic Measurement Technology in Immersed Tunnel Construction Zhong Weichun Jiang Juhuan Zeng Ganhui Guangzhou Salvage Bureau Guangzhou Guangdong 510260 China) Abstract:When huge concrete tunnel unit is prefabricated on a mobile dock platform as the platform is in a floating state conventional survey method is not feasible for construction survey and setting out. Simple measuring method such as rulers can not meet the accuracy requirement.The Luntou-Biological Island Tunnel of Guangzhou was the first immersed tunnel project which employed the new technology of mobile dock.With respect to this project the theory and operation of dynamic measurement technology were studied as well as the influence of deformation.In this project precise setting out on mobile dock platform was made possible by adopting a special operation of the theodolite making use of the structural characteristics of theodolite.This method solved the difficulty of precision control in concrete unit fabrication. Key words:tunnels;immersed tubes;dynamic measurement;mobile dock platform;precision ...
施工技术 2013年3月下 96 CONSTRUCTION TECHNOLOGY 第42卷第6期 D0:10.7672/sgjs2013060096 加筋土挡墙计算分析* 周春霖,许国光,王力尚,董伟 (中建中东有限责任公司) [摘要]加筋土挡墙作为一种有效的挡土墙技术,以其造价便宜、施工简便等优势在国内外广泛应用.在国内应用 中,格栅形式逐渐代替土工带而成为主流,但目前针对格栅的计算程序编写滞后,难以满足工程需求.首先介绍土 工带和土工格栅两种常用加筋形式,阐述其力学原理、设计计算方法和施工注意事项等,并对两种加筋形进行比 较,然后简单介绍自主编写的加筋土挡墙计算程序的功能和特点,最后以2个工程实例分别说明土工带、格栅两种 加筋形式的计算过程,并与其他计算方式比较以证明程序的正确性和有效性. [关键词]地下工程;加筋土挡墙;设计;计算;软件 [中图分类号]TU476.4 [文献标识码]A [文章编号]1002-8498(2013)06-0096-04 Analysis and Calculation of MSE-wall Technology Zhou Chunlin Xu Guoguang Wang Lishang Dong Wei China State Construction Engineering Corporation Middle East L.L.C. Abstract:As one of the most effective earth-retaining wall technologies MSE-Wall has been used widely all over the.world for its advantages of low cost and easy construction.Recently the geosynthetics used in MSE-Wall is gradually changing from reinforced geobelt to geogrid but there are few software designed for geogrid.This paper firstly introduced and pared the mechanical principle designing and constructing methods of reinforced geobelt and geogrid.After that the function and characteristics of self- developed software MSE calculator V1.1)programmed with Delphi is introduced.Finally the calculation procedures with reinforced geobelt and geogrid are illustrated with two engineering examples and the results are pared to other calculation methods to validate the accuracy of the software. Key words:underground engineering;MSE-wall;design;calculation 加筋土挡墙(mechanical stabilized earth r...
[关键词】桩基础;加压;嵌岩;长螺旋钻孔压灌桩;施工技术 [中图分类号]TU753.1 [文献标识码】A [文章编号】1002-8498(2015)09-0105-04 Application of Compression TypeRockSocketed Long SpiralDrillingandGroutingPile Hu Xiaobing',Hua Kun² (1.Ningbo Housing Design &Research Institute Co.,Lud.,Ningbo,Zhejiang 315040, China; 2.Huafeng Construction Co.,Lud.,Ningbo,Zhejiang 315040,China) Abstract;According to the geological condition of actual project,the pression type rock socketed long spiral drilling and grouting pile is selected after parison. This paper introduces the structure and the key parts checking of pile machine for pression type rock socketed long spiral drilling and grouting pile firstly. Then, construction process,operating keys and rock socketing quality standards are pointed out. It is proved that the pression type rock socketed long spiral drilling and grouting pile is applicable in all kinds of clay, silt, sand and the foundation with shallow buried weathered bedrock. Key words:piles; pression;rock socketed; long spiral drilling and grouting pile; construction 0引言 48222m²,地下建筑面积17566m²,基坑开挖深度为 沿海地区近年发展应用的一种新型桩基工艺,该桩剪力墙结构,2幢多层为框架结构。
施工技术 2016年12月上 58 CONSTRUCTION TECHNOLOGY 第45卷第23期 D01:10.7672/gjs2016230058 分段注浆止水技术在高水压盾构斜井施工中 的应用研究* 苏昂,曹勰2,李铮,何悦1 (1.西南交通大学交通隧道工程教育部重点实验室,四川成都610031; 2.神华新街能源有限责任公司新街项目部,内蒙古鄂尔多斯017212) [摘要]以新街台格庙矿区盾构施工煤矿斜井工程为依托,针对其高水压问题,在分析现有成果的基础上,提出分 段注浆止水、卸水降压措施.基于流-固耦合作用机理,通过使用FLACSD有限差分软件,对分段注浆止水效果进行 研究.研究结果证明:本工程条件下,分段注浆止水方式能够限制孔隙水压力<0.54MPa 主应力<4.40MPa 位移<0.980mm 满足隧道管片安全性要求,同时达到良好的止水效果,较好地解决了工程问题. [关键词]煤矿;斜井;盾构;高水压;分段注浆;流-固耦合 [中图分类号]TD262.1*2;TD421.5 [文献标识码]A [文章编号]1002-8498(2016)23-0058-04 Application of Waterproofing Technology with Section Grouting in Shield Construction with High Water Pressure for Inclined Shaft Su Ang' Cao Xie2 Li Zheng' He Yue' (1.Key Laboratory of Transportation Tunnel Engineering Ministry of Education Southicest Jiaotong University Chengdu Sichuan 610031 China:2.Xinjie Project Department of Shenhua Xinjie Energy Co.Ltd.Ordos Inner Mongolia 017212 China) Abstract:Based on a coal mine inclined shaft constructed by shield machine)in Taigemiao of Xinjie on the basis of relevant literature waterproofing with section grouting and water pressure reducing are put forward to deal with the unique high water pressure problems.Based on fluid-solid coupling mechanism the effect of waterproofing technology with section grouting is analyzed by finite difference software (FLAC3D).The results show that the waterproofing mode with section grouting can limit the pore water pressure lower than 0.54MPa the principal stress lower than 4.50MPa and displacement below 0.980m...
2010年12月 施工技术 第39卷第12期 CONSTRUCTION TECHNOLOGY 31 凤凰国际传媒中心圆弧轴线定位研究 王枭雄,李慧强,冯祥利 (北京天润建设工程有限公司,北京100077) [摘要]风凰国际传媒中心建筑外墙由9段不同直径、不同圆心的圆弧组成,圆弧墙体的定位成为本工程测量工作 的重点与难点.利用AutoCAD和全站仪建立平面、高程施工测量控制网,测量出控制点、弧度、距离,使用弦线支距 法确定圆弧墙体的位置.为了减小误差,达到精度要求,的弧形轴线加密到500mm一道.该方法可提高建筑 施工测量的精度,缩短施工工期从而增加经济效益. [关键词]圆弧轴线;测量控制网;定位 [中图分类号]TU311.4 [文献标识码]A [文章编号]1002-8498(2010)12-0031-03 Location Study for Arc Axis of Beijing Phoenix International Media Center Wang Xiaoxiong Li Huiqiang Feng Xiangli Bejing Tianrun Construction Engineering Co.Lad.Bejing 100077 China) Abstract:The outer building wall of Beijing Phoenix International Media Center consists of nine different diameter and circle center so location for arc wall is the difficulty for engineering measurement.By using AutoCAD and total station the plan and elevation measuring control nets are built up to measure control points radian and distance and chord offset method is applied to assure the position of arc wall.In order to decrease error and meet the precision requirement all the are axes are densified to 500mm.This method can improve measuring precision save construction period and increase economic benefit. Key words:arc axis:measuring control net;location 为满足顾客对工程产品越来越高的要求,提高工相互连接而成,南侧由一段不规则的曲面组成,两楼的 程质量是其中最重要的一环,而采用何种测量控制方中间区域由一些圆弧及矩形轴网连接而成.因此,圆 法对施工质量进行控制,将直接影响工程质量的好坏.弧墙体的定位就成为本工程测量工作的重点、难点. 圆弧结构施工测量方法有:半径圆心画圆法、弦线支距 2控制网的布设 法、极坐标法和交会法等. 2.1平面控制网的布设 1工程概况 根据测绘公司提供的A(G2) B C G1号及G3号 风凰国际传媒中心位于北京市朝阳区朝阳公园西5个已知平面控制点位(经过对5个平面坐标点位进 南角,占地面积1.88hm2 ...
施工技术 2016年9月上 98 CONSTRUCTION TECHNOLOGY 第45卷第17期 D0I:10.7672/sgjs2016170098 冻融循环对橡胶沥青混合料性能影响试验研究* 王海鹏,李洪峰 (东北林业大学工程咨询设计研究院,黑龙江哈尔滨150040) [摘要]为了探究多次冻融条件下,橡胶沥青混合料性能指标的变化是否呈现规律性,根据以往的研究成果,选取 合适的冻融方法和混合料配合比,通过试验研究了冻融循环对橡胶沥青混合料性能的影响规律.结果表明:橡胶 沥青混合料的性能受冻融循环及冻融循环次数的影响较为明显,变化幅度较大.随着冻融循环次数增加,混合料 的劈裂强度、劲度模量指标呈现出明显的减小趋势,而拉伸应变指标呈现出明显的增大趋势;以抗冻性为主的沥青 混合料的配合比不宜选用低油石比、大空隙率的橡胶沥青混合料,混合料的空隙率在3.5%~5.0%范围抗冻融性 能最优. [关键词]公路工程;橡胶沥青;冻融循环;劈裂强度;拉伸应变;劲度模量 [中图分类号]U414 [文献标识码]A [文章编号]1002-8498(2016)17-0098-05 Experimental Study on the Influence of Freeze-thaw Cycles on the Properties of Rubber Asphalt Mixture Wang Haipeng Li Hongfeng Engineering Consulting Design Institute Northeast Forestry University Harbin Heilongjiang 150040 China) Abstract:To explore the properties changing law of the rubber asphalt mixture under freeze-thaw condition based on the results of previous research this paper selected appropriate freeze-thaw method and mixture mix proportion studied the influence rule of freeze-thaw cycles on rubber asphalt mixture properties through indoor test.The results showed that:the freeze-thaw cycles had a large effect on the mixture properties the splitting strength and stiffness modulus decreased with the number of freeze-thaw cycles increases conversely the tensile strain increased with the number of freeze-thaw cycles increases. The mixture mix proportion should not choose lower asphalt-aggregate ratio and larger void ratio for frost- resistance purpose the frost-resistance property of the mix...
施工技术 2012年1月上 24 CONSTRUCTION TECHNOLOGY 第41卷第356期 冻结围护在浅层地表基坑工程中的应用 林秀桂,袁森林 (上海市政工程设计研究总院(集团)有限公司,上海200092) [摘要]在城市繁华中心进行原有地下通道的改造和扩建,通常面临环境复杂、管线密布、交通限制等问题,改造工 程势必影响周围居民正常生活和区域社会功能发挥.通过冻结围护在上海轨道交通3 4号线大统路节点改造工 程的成功应用,总结了浅层地表冻结围护设计和施工控制技术的重要参数,介绍了冻结融沉的影响与控制技术以 及融沉注浆对结构的影响. [关键词]地下工程;基坑;围护;冻结法;注浆孔;融沉 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2012)01-0024-04 Application of Frozen Retaining Structure in Shallow Foundation Excavation Construction Lin Xiugui Yuan Senlin Shanghai Municipal Engineering Design Institute Group)Co. Ld.Shanghai 200092 China) Abstract:Rebuilding and expanding of the original underground passage in the bustling city center always face the plex environment densely pipeline traffic restrictions and other issues.The rebuilding project is bound to affect the normal life of residents and the surrounding social functioning.Through the success application of frozen retaining structure technique in shallow foundation excavation construction in Shanghai Rail Transit Line 3 4 and Datong Road reconstruction some key parameters of design and construction control technique are summed up.Authors introduce effect and control technology of frozen thawing settlement and thaw settlement grouting effect on structures. Key words:underground;foundation excavation;retaining support;freezing method;grouting hole; thawing settlement 人工地层冻结法(artificial ground freezing 1工程概况 AGF)简称“冻结法”,最早由德国工程师F.H. 大统路地道改扩建工程南起天目西路,北至芷 Poetch于1880年提出,是利用人工制冷技术,使地江西路,全长1.26km 如图1所示.地道铁路以南 层中的水结冰,把天...
2011年7月上 施工技术 第40卷第344期 CONSTRUCTION TECHNOLOGY 47 冻土地区工程桩负摩阻力试验研究 孙建波,徐春华,徐学燕2 (1.哈尔滨工业大学建筑设计研究院,黑龙江哈尔滨150090; 2.哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090) [摘要]在太阳辐射热的条件下,考虑冻土工程性质的变化,进行室内冻土与混凝土圆柱间负摩擦力试验,分析负 摩擦力f与土融沉量S变化关系f.=f(S) 分析不同含水量条件下负摩擦力f与土融沉量S的时程关系曲线及两 者变化关系和含水量对负摩擦力f.、融沉量的影响.计算活动层的融沉及负摩擦力的发展对桩基承载力衰减影 响,即夏季冻土融化时,正融土中桩的承载能力衰减了8%左右. [关键词]冻土;负摩阻力;融沉量;含水量;衰减 [中图分类号]TU475.2 [文献标识码]A [文章编号]1002-8498(2011)13-0047-04 Test Research on Negative Friction of Engineering Pile in Permafrost Regions Sun Jianbo' Xu Chunhua' Xu Xueyan2 (1.The Architectural Design and Research Institute Harbin Institute of Technology Harbin Heilongjiang 150090 China; 2.School of Civil Engineering Harbin Institute of Technology Harbin Heilongjiang 150090 China) Abstract:Due to the qualitative change of frozen soil engineering the laboratory test was carried out on the negative friction force between frozen soil and concrete pile.The affection of thaw collapse of active soil layer and the development of negative friction on the attenuation of bearing capacity of pile foundation is calculated and the relation curves are analyzed with different water content such as f.=f(S) S=f (t)f =f(t).In summer bearing capacity of pile decreases with 8%of active thawing soil. Key words:permafrost;negative friction;thaw quantity;water content;attenuation 夏季由于太阳辐射热在多年冻土层上部存在着1模型试验 季节活动层,夏融冬冻.计算分析正融冻结土沿单 按土工试验规程,试样大小:混凝土圆柱周长为 桩表面的抗剪强度具有极大意义.这个问题的现实21.68cm 埋入冻土深度为50cm.土样为哈尔滨粉 性是因为在工程建(构)筑物营运期间,多年冻土经 质黏土,含水量分别为17.4%,20.44%,24.04%, 常从坚硬冻结状...