2011年2月 施工技术 第40卷第3期 CONSTRUCTION TECHNOLOGY 81 狭窄空间条件下大级差塔式起重机抬吊施工 陈治,王朝阳,杨松,李龙海,朱红兵 (中建钢构有限公司,广东深的)518040) [要]深树证蔡交易所莹运中工程巨型挑钢粉架装过程中,局部重型构件曼吊装工况限,森操作空尚十 分狭小的情况下,采用平臂塔式超童机配舍大吨位动臂塔吊联含吊,倒链水平牵引就位的吊装方法,容全顺利地 完成了吊仔务首先对双机指吊进了难点分析及施工方案的可行性分析,然后详细介了指吊施工工艺及容 金控制要点. [关键词]钢构:钢粉:重型构件:双机指吊 [中图分类TU758 [文献标识码]A [立章编]1002-8498(2011)03-40081-03 Lifting by Two Great Difference Capability Tower Cranes in Confined Spaces Chen Zhi Wang Chaoyang Yang Song Li Longhai Zhu Hongbing China Construction Steel Structure Co.Lid.Shenzhen Guangdong 518040 China) Abstract:During installation of mega eantilever steel truss in Shenzhen Stock Exchange Operations Center limited by hoisting conditions part of huge members are lifted and hoisted with bination method of level-jib tower crane and large tonnage jib crane and horizontal pulling emplacement by reversible chain in shallow working space.The authors analyze difficult points of lifting method by two tower cranes and reliability of construction scheme introduce in detail construction method and safety control points. Key words:steel structure:steel truss:huge member:lifting by two tower erane 深酬证券交易所营运中心工程指升裙槽为臣型工作. 钢粉架挑结构,长162m 宽98m 下弦高度36m 3 上弦高度61m.由6类(TR1TR6)14粉架垂直 交叉组成,主粉架用钢蛋约1.4万1.划分为540 1 件,裙楼构件分段质量较大,最大分段童82t 采用2 台国内最大的动臂式M1280D塔式起重机进行主构 件安装,另外布翅1台C7050和1台MC480平臂式 塔式起重机进行楼层次结构安装(见图1). 0- 1现场吊装参件 MC480 1.1工况条件 根据裙楼结构特点,在塔楼的东西两侧天井内 分别安1台M1280D塔式起重机,塔式起重机中 图1现场塔式起重机平面布 心距离,网轴线4.5M 并位于四和四轴线中 Fig.I Plan layout of tower crane on site 间位置.塔楼东西两侧外附的1台C...
施工技术 2011年1月 38 CONSTRUCTION TECHNOLOGY 第40卷第2期 狭窄空间内大跨重型钢结构施工技术 李建雄,张文学,刘曙光1,包明利2 (1.内蒙古工业大学土木工程学隆,内蒙古呼和浩骑010051: 2.内荣古永钢制品有限公司,内荣古呼和浩特010050) [摇委]基于内蒙古工业大学科技实骑梯铜传构工程特点和难点,介招了吊装方法盛顺序、吊装机械设择.同 时童点南述铜结构吊装施工方法,包括吊装楼面平台加固、构件利行及设备就位、拔杆制作与竖立、钢粉架的扶 就道以及施工测量及校正团定.结果表明,面对特殊的施工环境,传统的独脚拔杆可以发吊装优劳. [关键词]大跨传构:钢结狗:安装 [中密分类号]TU758.11 [立战标积弱]A [交章编号]1002-8498(2011)02-0038-03 Construction Technology of Heavy and Large-span Steel Structure in Narrow Space Li Jianxiong' Zhang Wenxue' Liu Shuguang' Bao Mingli2 (1.Civil Engineering Institute Inner Mongolia University of Technology Hohhot Inner Mongolia 010051 China: 2.Inner Mongolia Yonghui Steel-making Co.Lad.Hohhot Inner Mongolia 010050 China) Abstract:Based on characteristies and difficulties of steel structure in Inner Mongolia University of Technology the hoisting method and sequence choice of hoisting machine are introduced.Besides hoisting technologies are outlined including strengthening of hoisting platform member manufacture and machine emplacement manufacture and erection of pulling bar emplacement of steel truss as well as construction measurement and correction.The results show that traditional pulling bar with single foot can take advantages of hoisting facing to special construction conditions. Key words:large-span structure:steel structure:installation 1工程概况 内蒙古工业大学科技楼位于校教学豆,周边 建筑密度大,总建筑面积达25000m2(见1).作 为主入口的外楼样壶达2室外大平台,平台南北 两侧均为10层单元塔楼,总高41.3m 平台东端为 6层楼体单元,上3个单元构成了整个实楼的 凹字形平面.南北塔楼在29.8m标高处,采用2榴 4.7m高钢粉架连接,粉架主梁跨度为36m 粉架上 图1建就故果 采...
施工技术 2015年11月下 54 CONSTRUCTION TECHNOLOGY 第44卷第22期 D0I:10.7672/8gj82015220054 狭小空间内大跨度重型钢桁架施工技术 朱江,于文涛 (中亿丰建设集团股份有限公司,江苏苏州215000) [摘要]详细分析了如何在施工空间有限、多专业交叉施工的情况下,通过方案选择,采用桁架地面分段组装、150 滑车组系统进行单福桁架提升的方案,成功完成2福140超重桁架的安装工作.对滑车组系统中拔杆的设置、吊 具锁具的选择等问题进行了详细的分析计算,从技术措施上保证了方案的顺利实施. [关键词]钢结构;桁架;组装;提升;施工技术 [中图分类号]TU745.2 [文献标识码]A [文章编号]1002-8498(2015)22-0054-04 Construction Technology of Large-span Heavy Steel Truss Within the Narrow Space Zhu Jiang Yu Wentao (Zhongyifeng Construction Group Co.Lad.Suzhou Jiangsu 215000 China) Abstract:This paper analyzes in detail in the limited space and multi-disciplinary construction cases through construction schemes selection using method of truss assembly by segment on the ground and 150 tons of single truss pulley system lifting successfully pleted two 140 tons overweight truss installation work.Some problems of setting of pulling bar and selection of hoisting and anchor equipment in the pulley system are designed and calculated in detail which can assure the construction implementation successfully from the technical aspect. Key words:steel structures;trusses;assembly;lifting;construction 1工程概况 空间结构如图2所示. 某工程项目由东西两幢塔楼和中间裙楼组成, 塔楼最高为95.1m 总建筑面积约11.56万m2.两 栋塔楼之间的裙楼为钢结构桁架结构,骑楼大桁架 在东塔楼和西塔楼之间(①~6轴/①~①轴),⑩ ~6轴桁架跨度36m ①~①轴桁架跨度37.6m 高 度在3层(10.980m)和5层(21.450m)之间.大桁 架SGJ1上下弦杆件SB01为箱形截面900×750× 300;中弦杆件SB02为焊接H型钢截面H800×500× 20×30;两侧连接钢柱为箱形截面750×750×30× 图1整体效果 30;桁架斜腹杆SXC1焊接H型钢截面H800×500× Fig.1 The whole effect 20×30×30;桁架直腹杆为箱形截面600×750× 2安装重点难点分析 30×30....
[关键词]高层建筑;塔式起重机:支撑体系;牛腿;支座 [中图分类号]TU968[文献标识码]A[文章编号〕1002-8498(2016)12-0025-04 DesignandApplicationofSupportSystemofGiantTower CraneUnderNarrowandChangeableSpace Ye Haowen',Zou Jun',Lin Bing',Yang Wei²,Sun Hui²,Shao Peng (1.China State Construction Engineering Co.,Ld.,Bejing 100037,China;2.China Construction Third Bureau First Engineering Co.,Ltd.,Wuhan,Hubei 430000,China;3.China Construction Fourth Engineering Division Co.,Lud.,Guangzhou,Guangdong 510000,China) Abstract:Chow Tai Fook Finance Centre in Guangzhou is one of the oversize and super high-rise buildings in China. Its main tower construction adopts whipping and internal climbing tower crane. It huge weight,the wind load ishuge upper air,inner-tube space is narrow,supporting system of intelligent jacking formwork and supporting system of tower crane are deployed in the same inner cylinder.Through analysis and optimization design,fish-bellied beam without supporting and special beam bearing are taken to successfully resolve those problems,such as carrying capacity of the support system,narrow space inside the cylinder,and difficulties of assembly and disassembly.In the meantime,turnover efficiency of supporting system of tower crane is greatly improved. Key words:tall buildings; tower cranes; supports; corbel;bearings 1工程概况中M1280D塔式起重机臂长55m,最大单次吊重为 广州周大福金融中心总承包工程主塔楼高100t,塔身自重391t。
施工技术 2016年12月上 10 CONSTRUCTION TECHNOLOGY 第45卷第23期 D0I:10.7672/sjs2016230010 狭小场地内大管径超长溜管单侧浇筑深基坑 超大底板施工技术 周建波,黄爽,潘春龙,赵有平 (中建三局集团有限公司东北分公司,辽宁沈阳110000) [摘要]沈阳宝能环球金融中心项目T1塔楼为在建东北第一高楼,整个底板一次性浇筑混凝土量为3.6万m3 而 且浇筑过程中能利用场地仅有单侧的2000m2 施工过程中协调难度很大,为最快完成混凝土浇筑,项目部提前策 划,编制专项施工方案.最终经过153h的连续浇筑,一次性完成3.6万m3的混凝土浇筑.施工过程中采用4组溜 管,溜管管径406mm 单组溜管长73m 浇筑过程中单根溜管浇筑速度达到180m3/h 创造了新的浇筑速度纪录. [关键词]高层建筑;基坑;大底板;溜管;浇筑速度;施工技术 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2016)23-0010-04 Construction Technology of Massive Concrete Base Plate Pouring in Ultra-deep Foundation Excavation by Super-large Diameter and Super-long Articulated Chute on One Side in Narrow Space Zhou Jianbo Huang Shuang Pan Chunlong Zhao Youping Northeast Branch of China Construction Third Engineering Group Co.Lad. Shenyang Liaoning 110000 China) Abstract:The Tower I of Shenyang Baoneng Global Financial Center which is in construction will be the tallest building in the northeast of China whose entire volume of concrete is 36 000m which should be poured continuously with unilateral place of 2 000m2.To acplish the task in the shortest time the project department plans in advance drawing up special construction scheme.Ultimately after 153 hours of continuous pouring 36 000m concrete is poured successfully.Four sets of articulated chute whose diameter is 406mm and the length is 73m are utilized.The pouring speed is up to 180m/h which creates a new pouring record. Key words:tall buildings;foundation excavation;massive base plate;articulated chut...
2013年8月上 施工技术 第42卷第15期 CONSTRUCTION TECHNOLOGY 89 D0I:10.7672/sgjs2013150089 燥热临海地区桩基负极保护施工技术* 王力尚,许辉,田三川,梁志国 (中建中东有限责任公司) [摘要]结合位于中东燥热地区的超高层办公楼项目一AL Hikma Tower 研究了阿联首燥热临海地区柱基负极保 护施工技术.该技术是针对施工初期桩头剔凿时发现桩头钢筋外露现象提出的,即利用电化学保护方法阻止桩基 钢筋腐蚀.介绍了该技术的特点、适用范围、原理、施工工艺、机具设备、质量控制措施、安全措施、环境保护措施 等.实践证明,外加电流负极保护法的实施不仅攻克了工程遇到的巨大技术难关,保证项目基础顺利施工,而且社 会和经济效益非常显著. [关键词]地下工程;桩基础;负极保护;电化学设备 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2013)15-0089-04 Construction of Cathodic Protection Pile in Hot Coastal Areas Wang Lishang Xu Hui Tian Sanchuan Liang Zhiguo China State Construction Engineering Corporation Middle East L.L.C.) Abstract:Based on AL Hikma Tower project in middle east this paper researched the cathodic protection pile in hot coastal areas.According to the steel bars exposing at early construction stage when pile top chiseling the electrochemical protection method is used to prevent corrosion of pile steel bars.The key points of the technology are introduced including features using range principle construction technology equipments quality control safety measures and environmental protection measures.It proves that the cathodic protection pile method in hot coastal areas solved the technical difficulties and ensured the foundation construction with good social and economical benefits. Key words:underground;piles;cathodic protection;electrochemical devices 0引言 项目施工初期,桩头剔凿的时候发现桩头钢筋有外 阿拉伯海处于热带季风气候区,终年气温较露现象,问题出现后引起高度重视,通过专家和技 高.夏季地区温度可高达60℃,尤其是阿联酋临海术人员分析后,提出了解决方案—一负极保护法. 区海面由于陆地干热气流的“烘烤”,水温可达30℃...
2014年3月上 施工技术 第43卷第5期 CONSTRUCTION TECHNOLOGY 117 D0I:10.7672/5j52014050117 溪洛渡水电站泄洪洞龙落尾段边墙水力 劈裂缝处理技术 徐勇,范寒冰,黄照元 (中国水利水电第七工程局成都水电建设工程有限公司,四川成都611730) [摘要]详细介绍了水力劈裂缝产生原因,施工重点与难点,错筋劈裂缝修复处理方案及施工方法,对灌浆过程进 行了分析,并进行了质量检查.为有效修复水力劈裂缝缺陷,采用锚筋锁定、化学灌浆、表面裂缝封闭的方法进行 处理.经处理后钻孔取芯检查、物探检测、过流验证,满足设计要求. [关键词]水电站;薄壁结构;裂缝;水力劈裂缝;化学灌浆 [中图分类号]TV641 [文献标识码]A [文章编号]1002-8498(2014)05-0117-05 Treatment Technology of Hydraulic Fracturing Crack for Sidewall at Longluowei Segment of Xiluodu Hydroelectric Power Station Xu Yong Fan Hanbing Huang Zhaoyuan Chengdu Sinohydro Construction Engineering Co.Lad.Sinohydro Bureau 7 Co. Ltd. Chengdu Sichuan 611730 China) Abstract:This paper introduces the causes of hydraulic fracturing crack key construction and difficulties restoration scheme and construction method of anchor bar fracturing crack analyzes filling process quality inspection.In order to well repair the defects of hydraulic fracturing crack anchor bar locking chemical grouting superficial crack sealing methods are used.After core-drilling inspection geophysical detection over-current verification the engineering meets the design requirement. Key words:hydroelectric power stations;thin-walled structures;cracks;hydraulic fracturing cracks; chemical grouting 1工程概况 2号泄洪洞龙落尾段衬砌后断面为14.0m× 溪洛渡水电站泄洪洞是世界上最大的泄洪洞19.0m(宽×高),衬砌厚度为1.0m 属于薄壁结构. 工程,有3项指标雄冠全球:①总泄洪量为世界最2号泄洪洞龙落尾段第11仓边墙混凝土浇筑过程 大,4条泄洪洞全部开启可泄16648m3/s的流量;② 中,由于冷却水管破裂致使混凝土产生水力劈裂 单洞泄洪能力世界最大,在设计洪水流量的工况 缝,劈裂缝面积为32m2(见图1).为有效修复水力 下,单洞泄洪能力为3858m3/s:③过流面流速世界 劈裂缝缺陷,采...
2011年5月上 施工技术 第40卷第340期 CONSTRUCTION TECHNOLOGY 73 溪洛渡水电站左岸进水口高边坡开挖爆破技术 张志高,施召云2 (1.北京北大资源地产有限公司,北京100084: 2.二滩术电开发有限贵任公司,四川成都610051) [接要]溪洛渡术电为世界第三大豆型水电,电站装机字量12600MW.左岸电站进术口区城谷随峻、地形 直杂,施工雅度大、技术求高,丹挖边高达170 按利开挖爆姓质量尤为要.根岸电站进水口丹挖爆破 施工特点皮施工要求,制定了和应的丹挖爆破展量标准,采取了一系列质量利施,使丹挖爆破质量得到了有 的控制,保证了开挖高边坡的穆定,又保证了开挖披面的展量. [关键询]俱洛流水电战:左岸:电战遵水:开拉爆破 [中图分类TV732 [立献标识]A [交章编号]1002-8498(2011)09-0073-02 Blasting Technology of High Slop Excavation in the Left Bank Station Inlet in Xiluodu Hydropower Station Zhang Zhigao' Shi Zhaoyun2 (1.Beijing Peking Resource Real Estate Co.Lad.Beijing 100084 China: 2.Ertan Hydropower Development Co.Ltd.Chengdu Sichuan 610051 China) Abstract:Xiluodu Hydropower Station is the third largest hydropower station in the world its installed capacity is 12 600MW.The inlet area of the left bank hydropower station has some characteristics of steep slope and plicated terrain which makes construction difficult and technique requirement high. The excavated slope is 170m in height so it is important for controlling blasting quality.Based on construction characteristies of exeavation and blasting in the inlet area the relative quality control standard on excavation and blasting is established.By adopting a series of quality controlling measures the excavation and blasting quality is controlled effectively from two aspects of stability of the high slope and the quality of the excavated slope surface. Key words:Xiluodu Hydropower Station:left bank:inlet:excavation and blasting ...
施工技术 2015年10月下 86 CONSTRUCTION TECHNOLOGY 第44卷第20期 D0I:10.7672/sgs2015200086 湛江钢铁基地B型干煤棚施工 全过程模拟分析 郭小康,李鹏 (上海宝冶集团有限公司,上海200941) [摘要]根据湛江钢铁基地B型干煤棚施工组织设计,采用MIDAS通用有限元软件中的施工分析模块,考虑了结 构的几何与边界非线性,对整个施工过程进行模拟分析.获取了整个施工过程中结构的变形与应力,并将其与结 构一次加载结果进行了比较.结果表明,采用的“网架累积拼装,胎架逐步滑移”的施工方法安全可靠,施工结束时 结构的变形、应力与设计目标虽存在一定差异,但可接受. [关键词]钢结构;B型干煤棚;施工模拟;拼装;胎架 [中图分类号]TU311.41 [文献标识码]A [文章编号]1002-8498(2015)20-0086-04 Construction Process Simulation for Type-B Dry Coal Shed in Iron and Steel Base of Zhanjiang Guo Xiaokang Li Peng (Shanghai Baoye Group Co.Ltd.Shanghai 200941 China) Abstract:According to the construction process of type-B dry coal shed in iron and steel base of Zhanjiang the constructing simulation block of finite element software MIDAS is adopted to conduct the whole construction process by considering the nonlinearity of geometry and boundary.The deformation and stress distribution of the structure in the construction process are obtained which are pared with the results of the structure under plete loading.It is shown that the construction method of cumulative assembly and temporary supporting system gradually slip is safe and reliable.Although the final state of the structure in the construction process is different with the design target to same extent the results are still acceptable. Key words:steel structures;type-B dry coal shed;simulation;assembly;jigs 1工程概况 64500 本工程为宝钢广东湛江钢铁基地项目原料工 程一标段B型干煤棚,采用正放四角锥双层三心圆 2 20 20 柱面空间网壳结构,节点形式为焊接空心球,结构 4343 00 a平面 下弦采用多点支撑,在部分支点处设置橡胶支座以 252...
施工技术 2012年12月下 46 CONSTRUCTION TECHNOLOCY 第41卷第379期 湘电重型装备装配厂房复合地基加固技术 牛建东1,王博1,谭旭亮2,罗蓉2 (1.中南大学土木工程学院,湖南长沙410075;2.湖南恒盾岩土工程注浆科技有限公司,湖南长沙410002) [摘要]通过对湘电重型装备装配厂房地基承载力不足原因的分析,采用双液注浆结合搅拌桩形成复合地基的方 法对软弱地基进行处理,结合工程实际介绍了设计要点、施工工艺并对加固效果做了检验,证明复合地基承载力满 足设计要求,加固效果明显. [关键词]地基处理:双液注浆;搅拌桩;复合地基;基础加固;承载力 [中图分类号]TU472 [文献标识码]A [文章编号]1002-8498(2012)24-0046-03 Composite Foundation Reinforcement for the Xiang Electricity Heavy Equipment Assembly Workshop Niu Jiandong' Wang Bo' Tan Xuliang2 Luo Rong2 (1.School of Civil Engineering Central South University Changsha Hu'nan 410075 China; 2.Hengdun Geotechnical Engineering Grouting Technology Co. Ltd.of Hu'nan Changsha Hu'nan 410002 China) Abstract:By analyzing to the reasons that caused the insufficient bearing capacity of the foundation in the Xiang Electricity Heavy Equipment assembly workshop this paper develop a method to strengthen the weak foundation by forming posite foundations using cement-silicate grouting and mixing pile. Considering the real situation of the project this paper introduces the key points of the design construction technology.Test to the performance of the reinforcement shows that the posite foundation's bearing capacity can meet the design requirement and the effect of reinforeement is outstanding. Key words:foundation treatment;cement-silicate grouting;mixing pile;posite foundation; foundation reinforcement;bearing capacity 随着我国工程活动的日益频繁,在工程中面临布不均匀,杂填土分布范围广,埋深从 的地基处理问题也越来越复杂.地基土的分层性、7.0m不等;③杂填土种类多,有炉渣、...
[关键词】绿色施工;岩隙水;泉眼水;封堵;收集 [中图分类号】TV13【文献标识码】A[文章编号】1002-8498(2014)24-0047-03 ComprehensiveUtilizationTechnologyofRockCreviceWater and Spring Water Adjacent toXiangjiang River Zhang Wenqiang,Liu Xi,Jiang Heping (The FirstConstruction Engineering Company Ltd.of China Construction Second Enginering Bureau,Bejng 100176,China) Abstract:Based on the special geological conditions and hydrological conditions of Xiangjiang river, bining with the actual condition and the actual experience and method of some project,the water treatment methods between the rocks and spring at the middle weathered rock are described from the sealing,collecting and utilization aspect. The good effect is obtained in the actual project,and the water prehensive collecting utilization between the rocks and the spring water sealing and utilization are efficient and practical. Key words:green construction; rock crevice water; spring water; sealing; collecting 1工程概况见水位距地面深度为0.7~3.9m,高程为35.10~ 华远金外滩三期项目位于长沙市最繁华的中32.33m,稳定水位与初见水位基本一致;补给来源 心地段,总建筑面积28.2万㎡²,由4栋分别为65,为大气降水和地表生活用水渗透。
施工技术 2016年5月下 120 CONSTRUCTION TECHNOLOGY 第45卷第10期 D0I:10.7672/8js2016100120 淤泥质黏土基坑支护纤维袋注浆扩体 预应力锚杆研究* 冯玉国 (山东正元建设工程有限责任公司,山东济南250101) [摘要]针对现有扩体错杆的不足,从实用性和经济性两方面考虑,将具有透气、透水性能的纤维袋应用于淤泥质 软土基坑支护错杆注浆,研究开发了一种纤维袋注浆扩体预应力错杆.通过现场工艺性试验和抗拔试验,分析了 影响该锚杆抗拔承载力的原因,并据此采取措施进行改进,达到了锚杆极限抗拔承载力800~1000kN的设计要求. 研究结果表明:纤维袋注浆扩体预应力锚杆能够大幅度提高淤泥质黏土基坑支护锚杆抗拔承载力,是一种经济、实 用的注浆扩体错杆. [关键词]淤泥质黏土;基坑:支护;注浆扩体;预应力;错杆 [中图分类号]TU753.1;TU942 [文献标识码]A [文章编号]1002-8498(2016)10-0120-04 Study on Underreamed Grouting Prestressed Anchor with Fabric Bag in Silty Clay Foundation Excavation Supporting Feng Yuguo (Shandong Zhengyuan Construction Engineering Co. Lud. Ji’nan Shandong250101 China) Abstract:In view of the inadequacies of existing underreamed anchor considering the practicality and economy the fabric bags with air permeability and water permeability is used in grouting for silty clay foundation excavation supporting with anchor an underreamed grouting prestressed anchor with fabric bag suitable for excavation of silty clay is developed.The reasons affecting the anchor pull out capacity are analyzed through on site processing test and pull out testing and take appropriate countermeasures to improve the anchoring limit capacity can be reached to 800 ~1 000kN.The research results show that: underreamed grouting prestressed anchor with fabric bag can greatly improve the anti pulling capacity of the foundation excavation supporting and it is a kind of economical and practical grouting anchor. Key words:silty clay foundati...
[关键词]高层建筑;混凝土;模板;核心筒;液压爬模;塔式起重机 [中图分类号】TU755.2;TU731.2[文献标识码]A[文章编号]1002-8498(2011)18-0068-04 ApplicationofHydraulicAuto-climbingFormworkin 03-15BlockofYujiapu inTianjin Zhang Haifeng,Li Tong,Ren Haibo (Beijing Building Construction Research Institute Co.,Ltd.,Beijing100039,China) Abstract:According to the structural characteristics of the core-tube in 03-15 block of Yujiapu in Tianjin,hydraulic auto-climbing formwork are adopted. Construction method of bining construction method of hydraulic auto-climbing formwork and three sections flow work and the core-tube first construction are introduced for steel frame-reinforced concrete core-tube tall building.In addition,the principles and applications of hydraulic auto-climbing formwork and tower crane coordinate construction are pointed out.The practice shows that the mentioned process and technology can guarantee good quality of project and dramatically shorten the construction period.
1工程概况 天津于家堡03-15地块项目是天津滨海新区于 家堡中心商务起步区六地块之一,建筑功能主要为 商业及办公。
施工技术 2017年7月上 150 CONSTRUCTION TECHNOLOGY 第46卷第13期 D0I:10.7672/8js2017130150 泄水降压式管片降压效果及特性研究 刘建波,苏骏 (湖北工业大学土木建筑与环境学院,湖北武汉430068) [摘要]通过建立数值分析模型,比较分析泄水式管片和封堵管片承受的外水压力特性,表明泄水式管片更能降低 最大孔隙水压.为进一步研究泄水式管片对壁后孔隙水压影响,提取出前12m管片进行研究,表明泄水式管片让 拱底水压得到了有效折减.通过现场模拟管片有无泄水孔两种情况下的压泄水试验,得出其所示规律与数值模拟 基本相符,从而进一步验证泄水降压式管片的有效性. [关键词]盾构;泄水式管片;数值分析;试验;孔隙水压 [中图分类号]U455.43 [文献标识码]A [文章编号]1002-8498(2017)13-0150-04 Study on Hypotensive Effect of Drainaged Segment LIU Jianbo SU Jun School of Civil Engineering Architecture and Enuironment Hubei Unirersity of Technology Wuhan Hubei 430068 China) Abstract:Through the establishment of calculation model the seepage field and stress field this paper analyzes the water pressure characteristics of the two segment it shows that drainaged segment can reduce the pressure.For the further study of drainaged segment effect on the wall after the pore water pressure extracting the first 12m segment was studied.Which makes the lower discharge segment reduced water pressure.At last the experiment is carried out and the conclusion is consistent with the result of numerical analysis and to further verify the validity of the discharge buck segment. Key words:shields;inclined shaft;numerical analysis;tests;pore water pressure 0引言 的斜井排水方案,得到了合理的管路参数,但未对 我国煤炭资源丰富,但是在某些富水区域修建 泄水孔布置位置做进一步的讨论.郭思良3对泄 煤矿长距离巷道时,常常面临富水、高压、突涌水等 水孔的位置和数量进行了数值模拟,得出随着泄水 灾害事故,而且一旦发生事故,由于煤矿的特殊性, 孔数量和开孔角度与孔隙水压力以及管片位移间 施救难度非常大.因此,如何保护煤矿斜井中管片 的关系.吴学明等4利用有限差分程序法和物理 的安全,就显得十分重要,其中主要的办法之一就 相似模拟试验,分析其顶板局部失稳机理.指出导 ...
2010年5月 施工技术 第39卷第5期 CONSTRUCTION TECHNOLOGY 47 沿海滩涂地区深基坑支护技术 王强 (东北电业管理局第二工程公司,辽宁大连112000) [摘要]华能营口热电厂翻车机室工程距渤海沿海大堤不到1km 淤泥层厚度大,属于典型滩涂工程,对基坑支护 要求高.现场采用钻孔桩和土钉墙支护相结合的联合支护方法.通过钻孔柱配合错索、腰梁联合受力,土钉墙采 用错杆、喷锚网、喷射混凝土方式.基坑变形监测结果表明,基坑整体边坡稳定,土钉墙及支护桩变形在控制范围 内,保证了基坑安全. [关键词]基坑支护;滩涂;钻孔桩;土钉墙;监测 [中图分类号]TU753.1 [文献标识码]A[文章编号]1002-8498(2010)05-0047-03 Support Technology of Deep Foundation Excavation in Coastal Beach Area Wang Qiang The Second Engineering Company of Northeast Power Management Bureau Dalian Liaoning 112000 China) Abstract:The foundation support of car damper in Huaneng Yingkou Powerplant is difficult to construct because it is less than 1 kilometer from embankment of Bohai and the silt layer is very thick.The deep foundation excavation is supported with bored piles and soil nailing wall.The bored piles bining with cables and beams act as main bearing members.Reinforced mesh and shotcrete are set among anchors to form soil nailing wall.The monitoring results show that the foundation slope is stable and deformation of soil nailing wall and support piles can be controlled.Thus the safety of foundation excavation is ensured. Key words:foundation excavation support;beach;bored pile;soil nailing wall;monitoring 1工程概况 各部分开挖标高如图1 华能营口热电厂翻车机工程厂址原为一废弃盐所示(自然地面标高 滩,距渤海沿海大堤不到1km 地质条件极差,淤泥质-1.00m). 土厚度达8~14m 多呈软塑或流塑状态,属于典型滩2地质条件 涂工程.该深基坑对支护要求极高,现场采用钻孔柱 根据岩土工程勘 和土钉墙支护相结合的联合支护方式.钻孔桩配合锚测报告,厂区内地层为 索、腰梁联合受力;土钉墙采用错杆、喷锚网、喷射混凝第四纪河口~滨海相 土的方式,使结构处于最佳受力状态,通过监测,基坑沉积物,其中粉细砂、 图1基坑平面 侧壁稳定,变形较小. 粉土层为较好的含水...
施工技术 2014年10月上 42 CONSTRUCTION TECHNOLOGY 第43卷第19期 D0I:10.7672/sgjs2014190042 沿海地区钢板桩支护下聚乙烯螺旋波 纹管施工技术 杜君为,马全丽,孙志波,邸月超,贾成国,杨良川 (天津二十冶建设有限公司,天津300301) [摘要]对沿海地区钢板桩支护下聚乙烯螺旋波纹管安装过程中遇到的各种问题进行了研究,总结出钢板桩快速 支撑、管道接口整圆、管道回填灌水沉砂、钢筋混凝土圆形检查井预制及现浇组合施工、管道沉降监测等一系列综 合技术,解决了钢板桩支护下聚乙烯螺旋波纹管施工难题. [关键词]桩;钢板桩:支护;软土地基;聚乙烯螺旋波纹管;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)19-0042-03 Construction Technology of Polyethylene Spirally Corrugated Pipe in Steel Sheet Pile Supports in Coastal Area Du Junwei Ma Quanli Sun Zhibo Di Yuechao Jia Chengguo Yang Liangchuan Tianjin No.20 Metallurgical Construction Co.Ltd.Tianjin 300301 China) Abstract:This paper made research on construction technology of polyethylene spirally corrugated pipe in steel sheet pile supports in coastal area summarized the technologies such as steel sheet pile fast supporting rounding the pipe joint irrigation and desilting reinforced concrete check well prefabrication and pouring settlement monitoring.These technologies can solve the problems in polyethylene spirally corrugated pipe construction. Key words:piles;steel sheet piles;supports;soft soil foundation;polyethylene spirally corrugated pipe; construction 聚乙烯螺旋波纹管作为一种新型管材具有耐1施工工艺流程 腐蚀、质量小、耐磨损、内壁水阻小、柔韧性强、施 施工准备→沟槽支护及开挖一→管道接口整圆 工便捷、使用寿命长等一系列优点,近年来得到广及安装→检查井施工→闭水试验→沟槽回填→钢 泛应用,尤其在放坡开挖情况下施工时其优势得板桩横撑拆除及钢板桩拔除. 到充分发挥.但沿海地区多为软土地基,由于地2施工要点介绍 下水位高,地质条件差.管道埋深较大时施工聚乙2.1钢板桩快速支撑施工 烯螺旋波纹管就不得不使用钢板桩支护,在这种 腰梁传统的管道沟槽拉森钢板桩支撑结构通 情况下受地质条件及管材本身的缺陷等诸多因素 常采用焊接,一般在沟槽两侧的钢板桩上焊制牛 限制,施工中常常会遇到诸如管道接口质量难以腿,牛腿上放...