2012年4月下 施工技术 第41卷第363期 CONSTRUCTION TECHNOLOCY 成都国金中心T1&T2塔楼设计与施工 武雄飞,曲贵阳,袁渊 (中建三局成都公司,四川成都610041) 【摘要】成都国金中心T1&T2塔楼建筑高度247.8m 采用框架-核心筒结构体系.结构设计采用性能化设计思 想,确定明确的总体及重要构件的抗震性能目标,提高结构的可靠性.在具体施工过程中,通过课题攻关,解决了 在复杂渗水环境下超厚外墙的施工、筏板大体积混凝土裂缝控制、钢筋密集部位构件混凝土振、高空钢管内混凝 土浇筑及钢管柱变截面等一系列问题,取得明显的经济效益和社会效益. 【关键词]高层建筑;混凝土:性能化设计;定型工具 【中图分类号]TU972:TU974 [文献标识码】A【文章编号]1002-8498(2012)08-0007-04 Design and Construction of T1 T2 in IFC Chengdu Wu Xiongfei Qu Guiyang Yuan Yuan Chengdu Branch China Construction Third Engineering Bureau Chengdu Sichuan 610041 China) Abstract:The architectural height of TI T2 in IFC Chengdu is 247.8m.The TI T2 are designed as frame-core tube structure.With performance-based design of buildings the seismic goals for integral structure and important ponents are decided to improve the reliability of the buildings.Good economical and social effect is obtained through research key problems such as extra-thick external walls construction under plex seepage conditions mass concrete cracks control of the raft concrete vibration for the ponents with dense reinforcement concrete pouring in steel pipe at high altitude as well as changing section of steel pipe column. Key words:tall buildings:concrete:performance-based design:stereo type tools 1工程概况 成都国金中心工程位于成都市锦江区红星路 与大慈寺路交叉路口的东南角,总占地面积 54857.04m2 总建筑面积763718m2 其中地下室建 筑面积227712m2.项目主要分为五大功能区域: 地下3~5层为地下车库,地下1~2层及地上1-6 层、局部7层为商业,商业裙楼最高42.15m 总建筑 面积153467m2;裙楼上部为4栋塔楼,包括2栋办 公大楼T1&T2一栋住宅大楼T3和一栋酒店大楼 图1成都国金中心效果 T4.办公大楼T1&T2结构基本对称(...
施工技术 2014年1月下 28 CONSTRUCTION TECHNOLOGY 第43卷第2期 D0I:10.7672/8gj82014020028 成都华置广场异形钢结构施工技术* 曹阁,许志华,刘宁波,张振兴,王旭 (中建三局建设工程股份有限公司成都分公司,四川成都610041) [摘要]结合成都华置广场项目特色天窗的设计,在施工过程中对天窗钢结构进行受力传递方向分析,并将其与设 计受力传递方向做对比,发现其主梁与次梁传力方向正好相反,在施工过程只能先施工次梁后施工主梁,因此介绍 了本项目特色天窗钢结构逆向施工的施工过程. [关键词]钢结构;异形天窗;主梁;次梁;胎架;施工技术 [中图分类号]TU758.1 [文献标识码]A [文章编号]1002-8498(2014)02-0028-04 Construction of the Special-shaped Steel Structures of Chengdu Huazhi Plaza Cao Ge Xu Zhihua Liu Ningbo Zhang Zhenxing Wang Xu (China Construction Third Engineering Co.Ltd.Chengdu Construction Company Chengdu Sichuan 610041 China) Abstract:Combined with a characteristic skylight design of chengdu Huazhi Plaza during the construction process the loading mechanism of steel skylight structure is analysed.In addition when pared with the design loading process it is found that the loading direction in the main-beam and sub-beam is different.Therefore when under construction it is necessary to construct sub-beams first and then is main-beam.The main purpose of the article is to introduce the characteristic steel skylight downward construction process within the project. Key words:steel structures;special-shaped skylight;main-beam;sub-beam;jigs;construction 1工程概况 华置广场项目位于四川省成都市青羊区太升 南路地段,总建筑面积约43万m2 地上共设酒店、 办公楼、住宅TC、住宅TD等4栋塔楼以及商业裙 楼.其中眼睛形天窗位于裙楼中庭位置,具有实用 性及美观性双重作用,天窗骨架为钢结构,其结构 异形不规则,如图1所示. a钢结构三维图 b眼睛天窗模型效果 本项目针对眼睛天窗的结构特性,采用先施工 图1钢结构三维模型、眼睛天窗横型效果 次梁后施工主梁的方法,过程中采用钢胎架对次梁 Fig.1 3D model of the steel structures 进行支撑,并搭设吊架作为施工操作架,配合使用 and e...
[关键词】桥梁工程;连续梁桥;悬浇;施工;监控 [中图分类号】TU196 【文献标识码】A [文章编号】1002-8498(2012)15-0069-05 Research onProcedural Monitoring Operation in Cantilever-castingBridge Construction Liu Yong',Yan Baohua²,Cao Wei²,Wang Kejia²,Zhang Aijiang',Li Kai (1.Beijing Municipal Engineering Research Institute,Beijing 100037,China; 2.Bejing Gonglian Jieda Road Maintenance Co.,Ld.,Beijing 101300, China) Abstract:Taking the construction monitoring practice of an 88m continuous girder bridge as an example, this paper studied the key points of each phase of construction monitoring, summarized and refined the monitoring program, sorted out the key phases, made clear the prone mistakes and the solutions. The work in this paper can help the monitoring and construction personnel to understand the cores of the monitoring program, can improve the monitoring precision and monitoring efficiency. By adopting the proposed monitoring method, construction of the 88m continuous girder bridge showed good monitoring effect and the main bridge was closed naturally with an closure error of only 7mm. Key wordsbridges; continuous beam bridges; cantilever-casting; construction; monitoring 臂挂篮法,结构需要从悬臂体系转换为连续体系,监控的实际操作方法,监控人员往往不明白各阶段 导致了主梁复杂的内力以及位移变化。
2016年11月下 施工技术 第45卷第22期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/5js2016220095 带桩帽的刚性桩复合地基受力性能研究* 刘明泉12,李晓芝,刘春原2 (1.唐山学院土木工程学院,河北唐山063000;2.河北工业大学土木工程学院天津300401) [摘要]针对沿海公路改造工程中遇到的困难,提出带桩帽的刚性桩复合地基概念.根据实际工程项目,采用 ABAQUS有限元分析软件,建立分析模型.分析了带桩帽的刚性桩复合地基中,桩土应力比、桩身轴力、桩身侧摩 阻力和路基、地基中的竖向应力分布情况.研究结果表明,由于桩帽的存在,能大大减小桩顶的应力集中,带帽刚 性桩的承载力比单桩有所提高.但其侧摩阻力曲线存在中性点,与刚性桩有所区别. [关键词]复合地基;刚性柱;柱帽;桩身轴力;侧摩阻力 [中图分类号]TU473 [文献标识码]A [文章编号]1002-8498(2016)22-0095-04 Mechanical Properties Study of Capped Rigid Pile Composite Foundation Liu Mingquan'.2 Li Xiaozhi' Liu Chunyuan2 (1.School of Civil Engineering Tangshan Unirersity Tangshan Hebei 063000 China; 2.School of Civil Engineering Hebei University of Technology Tianjin 300401 China Abstract:Aimed at the difficulties encountered in the reconstruction project of the coastal highway the concept of capped rigid pile posite foundation is presented.According to the actual project the analysis model is established by using the ABAQUS finite element analysis software.The stress ratio of pile to soil the axial force of pile the lateral frictional resistance of pile and the vertical stress distribution in the subgrade and foundation are analyzed.The research result shows that capped rigid pile can greatly reduce the stress concentration in posite foundation and the bearing capacity of capped rigid pile is improved greater than that of single pile because of the existence of a pile cap.But the lateral friction resistance curve exists neutral point which is different...
[关键词】防水工程;返潮;人防工程;地下室 [中图分类号】TU761[文献标识码】A [文章编号]1002-8498(2013)16-0093-02 Cause Analysis and Treatments of Damping of Ground FloorinHouseswithCivilDefenseBasement FengYonggang (Shanghai Zhongjin Consruction Group Co.,Lad.,Shanghai 200060,China) Abstract:Because of special requirements of civil defense project design,the newresidential building need to be built on the top of air defense basement,and the pipe layer must be added between first floor and civil defense basementroof.Because of problems of design orconstruction,the damping of firstfloor and wall will affect the use by residents.The targeted analysis is made to damping reasons, and the effective treatments are proposed. Key words:waterproofing; damping;civil defense;basement 随着城市的发展,土地资源越来越匮乏,为了年7月开工至2008年12月完成。
施工技术 2010年11月 102 CONSTRUCTION TECHNOLOGY 第39卷第11期 巴基斯坦恰希玛C-2工程核安全壳钢衬里 及附件的焊接优化施工 马新朝 (中国核电工程公司北京四达贝克斯工程监理有限公司,河北石家庄050021) [摘要]介绍了巴基斯坦恰希玛-2工程核电站安全壳钢衬里的构成,从筒体的分层、弯顶吊耳、钢衬里的制作安 装、牛腿H形接头的焊接工艺及焊接检测等方面入手,论述了钢衬里制作的焊接优化施工技术,指出了C-2安全壳 制作优化的基本特点和工艺,提出了防止焊接变形及缺陷的措施.结果表明,合理的优化设计与施工,保证了工程 质量,降低了生产成本. [关键词]安全壳钢衬里;焊接优化;穹顶吊耳;焊接检测 [中图分类号]TU758.162 [文献标识码]A [文章编号]1002-8498(2010)11-0102-05 Welding Optimization for Steel Liner and Attachment of Nuclear Containment in Chasima C-2 Project of Pakistan Ma Xinchao Beijing Starbecs Engineering Management Co.Iad.of CNNC China Nuclear Power Engineering Co. Ltd.Shijiazhuang Hebei 050021 China) Abstract:The position of steel liner of containment in Chasima C-2 project of Pakistan is introduced. Based on the cylinder liftinglug of dome manufacture and installation of steel liner welding process and detection of H-joint of bracket the author expounds construction technology of welding optimization and shows basic characteristics and technique.Furthermore measures to avoid welding deformation is proposed.The result shows that reasonable optimization and construction not only ensure construction quality but also reduce the cost. Key words:steel liner of containment;welding optimization;liftinglug of dome;welding detection 1安全壳钢衬里简介 焊接,GTAW用于304L等不锈钢构件及其他重要构件 C-2工程核电站安全壳为立式钢混凝土混合结 的焊接及打底焊,现场安装用SMAW stud welding用于 构,钢衬里筒体直径为36000mm 高49606mm 8=6mm 螺柱与预埋加厚板、螺柱与钢衬里壁的焊接. 的20G筒身及6=8mm的20G弯顶衬里板外部分布加 2优化方案 劲肋及错钉,筒壁上有贯穿件168件(贯穿件由套管、 为提高施工质量,保证施工进度、降低成本,在总 加厚板、挡环、纵肋...
2014年6月下 施工技术 第43卷第12期 CONSTRUCTION TECHNOLOGY D0I:10.7672/5js2014120009 峡江水利枢纽连续箱梁一次浇筑成型施工技术 朱刘东,廖振炎 (武警水电第二总队第五支队,江苏常州213135) [摘要]江西省峡江水利枢纽坝顶拱形桥第2联采用变截面单箱单室预应力钢筋混凝土连续梁桥.介绍了混凝土 所采用的浇筑工艺、养护措施及施工中的注意事项,阐述了在预应力箱梁混凝土一次性浇筑过程中,解决混凝土拌 制、运输、浇筑时间控制、振捣等问题的施工技术. [关键词]混凝土;箱梁;预应力;浇筑;施工技术 [中图分类号]TV61 [文献标识码]A [文章编号]1002-8498(2014)12-0009-02 Construction of One-time-pouring in the Continuous Box Girder of Xiajiang Hydro-junction Zhu Liudong Liao Zhenyan No.5 Detachment of No.2 Hydropower Force of Armed Police Changzhou Jiangsu 213135 China) Abstract:The second segment of Xiajiang Hydro-junction arch bridge is continuous box girder with prestressed reinforced concrete.The concrete pouring process maintenance and attentions are introduced. The construction difficulties in concrete mixing transportation pouring time control vibrating are solved in the one-time-pouring construction. Key words:concrete;box girders:prestressing:pouring;construction 1工程概况 355 355 江西省峡江水利枢纽坝顶拱形桥第2联采用变 品为同 167.570 41 截面单箱单室预应力钢筋混凝土连续梁桥.箱梁 33167.5 断面采用直腹板断面,最大跨径为45m 跨径组合为 别 167.5187.5187.5167.5 28.75m45m28.75m 采用支墩支架式施工. a1/2支点断面1b1/2跨中断面 箱梁顶板宽7.1m 底宽3.75m 翼缘板悬臂长 图1箱梁标准横断面(单位:cm) 1.675m.支点腹板处梁高2.5m 跨中梁高1.5m Fig.1 Standard cross-section of box girder(unit:cm) 梁底面按照设计的二次抛物线变化.箱梁顶板与 箱底平行,顶板厚26cm:底板厚度从跨中至距墩顶 次浇筑成型技术具有消除传统施工工艺的施工缝、 中心1m处由25cm变化至40cm 为改善箱梁根部 提高梁体的美观性、增强梁体的整体刚度、延长梁 截面受力,在横梁两端附近截面顶、底板局部加厚; 体的耐久性和使用寿命、缩短施工周期等特点,因 跨中段腹板厚35cm 从离中墩中心线7.5m处至中 此采用此法对梁体进行混凝土施工. 墩横梁腹板厚度由35cm渐变至70cm;桥台处设置 3拌合站的选择 1.5m宽横隔梁,中墩墩顶设置2m...
2013年4月上 施工技术 第42卷第7期 CONSTRUCTION TECHNOLOGY 19 D0I:10.7672/8gjs2013070019 岩溶地区缺陷桩检测及处理措施* 黄柳云,杜静2,王家全1,吴辉琴1 (1.广西工学院土木建筑工程系,广西柳州545006;2.广西交通职业技术学院路桥工程系,广西南宁530023) [摘要]结合多项工程缺陷桩实例,采用声波透射法和钻芯法系统地对桩底持力层承载力不足、沉渣过厚、桩身局 部夹泥、桩身局部离析、桩头浮浆等缺陷的基桩进行对比分析并提出相应的补强处理方案.结果表明,采用声波透 射法检测并辅以钻芯法进行验证,可以客观评价基柱的质量,为岩溶地区桩基施工提供经济有效的技术参考. [关键词]地下工程;桩基础:缺陷桩;检测 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2013)07-0019-05 Detection of Defective Piles in Karst Area and Treatment Measures Huang Liuyun' Du Jing? Wang Jiaquan' Wu Huiqin' (1.Department of Civil Engineering Guangxi University of Technology Liuzhou Guangxi 545006 China; 2.Department of Highway and Bridge Guangxi Vocational and Techaical College of Communications Nanning Guangxi 530023 China) Abstract:Based on a number of projects parative analyses were performed to deflective piles with deficiencies such as insufficient bottom bearing capacity excessive sediment floating pulp defect with mud and segregation using sound wave transmission and core drilling method and the retrofitting treatments were proposed correspondingly.The results show that the quality of piles can be evaluated objectively using the sound wave transmission method with the assistance of core drilling method.These provide economic and effective technical references to pile constructions in karst area. Key words:underground;piles;defective pile;detection 岩溶地区地质条件复杂,地下水丰富,岩石面定工程桩应进行单桩承载力和桩身完整性检测. 高低起伏变化大,严重影响柱基础的施工质量.桩 1.1桩身完整性检测 基工程属于隐蔽工程,桩基安全直接影响着建筑物 目前桩身完整性检测规范推荐的方法主要有 的安全....
[关键词]地下工程;地基处理;岩溶地区;沉降 [中图分类号]TU472 [文献标识码]A [文章编号]1002-8498(2013)15-0093-03 Study onComplexFoundation Treatment and UnevenSettlementControlinKarstArea Tang Hong,Zhou Zhengrong (Schoolof Urban Construction,Wuhan University ofScience and Technology,Hubei,Wuhan430065,China) Abstract;Under the plex geological conditions of karst area, improper foundation treatment can cause safety problem or construction difficulty, cost increase and other adverse consequences.Taking a frame- shear wall structure as an example, this paper analyzes foundation treatment technology and foundation settlement under the bined action of soil hole in local thick overlying soil layer site,karst fissure broken belt,and the soil hole and karst fisure broken belt surrounding exist soft-plastic silty clay layers. By setting later poured belts, the uneven settlement is perfectly controlled. Key words:underground; foundation treatment; karst area; settlement 0引言 星城二段公寓楼,布置于山体的西侧,紧邻商业 岩溶是指地表中可溶性岩石(主要是石灰岩)区。
施工技术 2011年8月上 86 CONSTRUCTION TECHNOLOCY 第40卷第346期 岛状多年冻土路基差异沉降影响因素研究 宋新生 (河南城建学院交通工程系,河南平顶山467036) [摘要]在分析岛状多年冻土路基差异沉降影响因素及成因的基础上,建立了岛状多年冻土路基工后差异沉降计 算模型,系统研究了路基高度、融化盘厚度、融化盘面积、融化盘偏移对冻土路基差异沉降的影响.结果表明:路基 最大差异沉降量随着路基高度、融化盘厚度、融化盘直径的增加而增大,但差异沉降量增幅随着路基高度、融化盘 厚度、融化盘直径的增加而逐渐减缓;在相同融化盘深度、相同融化盘半径的前提下,融化盘偏移对路基差异沉降 的影响可忽略不计. [关键词]道路工程;岛状多年冻土;差异沉降;影响因素 [中图分类号]U416.1 [文献标识码]A [文章编号]1002-8498(2011)15-0086-05 Influence Factors on Differential Settlement of Island Permafrost Subgrade Song Xinsheng Department of Traffic Engineering He'nan University of Urban Construction Pingdingshan He'nan 467036 China) Abstract:Based on analyzing the cause and influence factors on differential settlement of island permafrost subgrade the authors build calculation model of post-construction differential settlement for island permafrost subgrade and systematically research on influence of subgrade height thaw tray thickness thaw tray area and thaw tray migration on differential settlement of island permafrost subgrade. The results show that the maximum differential settlement of subgrade increases with the increasing of subgrade height thaw tray thickness and thaw tray diameter.But the increase amplitude of differentia settlement gradually decreases with the increasing of subgrade height thaw tray thickness and thaw tray diameter.Under the conditions of the same depth and the same thaw tray diameter the influence of thaw tray migration on subgrade differential settlement can be neglected. Key words:road enginee...
2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 49 D0I:10.7672/5js2015070049 安哥拉换填垫层地基的沉降计算分析 彭友君1 2,杨铮2,彭博2 (1.北京城建勘测设计研究院有限责任公司,北京100101;2.北京城建设计发展集团股份有限公司,北京100037) [摘要]安哥拉浅部棕红色砂Quelo地层具有湿陷性特征,采用换填垫层进行地基处理后,沉降计算是岩土工程研 究最重要的课题.分别对换填垫层、压实地基、天然地基浸水后,通过勘探和原位测试给出了土的物理力学指标, 建立锥头阻力与地基反力系数的回归方程,完善随深度变化的沉降计算参数,按照英国标准规定的公式和算例进 行沉降计算,假定条形基础与换填垫层组成整体基础并对其可靠性进行验算,从而简化了沉降计算方法,将沉降计 算结果与实测沉降量对比分析后,说明沉降计算结果可信并满足设计要求,实体楼的浸水试验也得到了印证,安哥 拉砂土地基采用换填垫层法进行地基处理是合理的. [关键词]地基:沉降;换填垫层;反力系数:计算 [中图分类号]TU433 [文献标识码]A [文章编号]1002-8498(2015)07-0049-06 Settlement Calculation and Analysis of Replacement Cushion Foundation in Angola Peng Youjun.2 Yang Zheng? Peng Bo2 (1.Beijing Urban Construction Exploration Surreying Design Research Institute Co.Ltd.Beijing 100101 China; 2.Beijing Urban Construction Design Derelopment Group Co.Ltd.Beijing 100037 China) Abstract:The shallow red brown sand Quelo stratum in Angola has the characteristic of collapsibility and the most important subject of geotechnical engineering research is settlement calculation after foundation treatment by adopting replacement cushion.After immersion of the replacement cushion pacted foundation and natural foundation the physical and mechanical indicators of the soil are given through exploration and in-situ test the regression equation of the cone resistance and foundation reaction force coefficient is established and the settlement calculation parameters changed with depth are perfected.Settlement calculation is conducted according to th...
施工技术 2010年10月 40 CONSTRUCTION TECHNOLOGY 第39卷第10期 奥运0829训练场大跨度滑行索网结构施工技术 刘航,吴文奇,李晨光1,尹华钢2,李志强2 (1.北京市建工程研完院,北京100039:2.总装部工程设究总院,北京100028) [要]奥运0829训练为第29居奥运会开闭蓉式演的训练场地,原型尺寸强拟国家体育场屋盖结构的开口 部分,其中所采用的高空滑行索网的设计皮安梨施工为读工程的难点.清行网的最大跨度超过10m 采用高 强裤丝绳,既承了训值表演中“滑景”的作用,同时也起到了穆定主体钢结构的作用.介溶了请滑行素网结 构的现场安装工技术. [关键词]素网结构:滑行素网:施工:有限元分析 [中分类导]TU323.8 [文献核识移]A [支章编号]1002-8498(2010)10-0040-04 Construction Technology of Long-span Zipline Cable-net Structure of the 0829 Training Ground for the Olympic Games Liu Hang' Wu Wenqi' Li Chenguang' Yin Huagang? Li Zhiqiang (1.Beijing Building Construction Research Institute Beijing 100039 China: 2.Engineering R D Institute of the General Arming Ministry Beijing 100028 China) Abstract:The 0829 training ground is one of the rehearsals ground for the opening and closing ceremony of the 29th Olympic Games which is built by prototype to simulate the uncovered part of the roof structure of the National Stadium.The design and construction of the zipline cable-net structure used in the training ground are the difficulties of the project.The span of the zipline cable-net structure exeeeds 180m and high strength galvanized steel ropes are used to realize the function of zipline during the training program as well as to stabilize the steel structure.In this paper the construction techniques of the zipline cable-net structure are introduced. Key words:cable-net structure:zipline cable-net:construction:finite element analysis 1工程概况 置标高为30m.上述拉素的最大跨度超过180m 采用 为筹备2008年北京...
2016年7月下 施工技术 第45卷第14期 CONSTRUCTION TECHNOLOGY 113 D0I:10.7672/8js2016140113 奥林匹克体育中心游泳馆大跨度单层拱壳钢 结构屋盖施工技术 施元强,蒋国平,李洪祥,贾尚瑞 (浙江精工钢结构集团有限公司,浙江绍兴312030) [摘要]河北奥林匹克体育中心游泳馆钢屋盖为独立的大跨度单层拱壳结构,内部桁架、钢拱构件截面大、跨度长、 质量大.另外,屋盖下方混凝土结构造型复杂、覆盖范围广,大型起重机无法在场内施工.所以,在保证下方混凝 土结构不被破坏的前提下,选择合理的施工方案是确保工程如期、高质完成的关键所在.主要对游泳馆屋盖钢结 构的施工方案和施工措施进行介绍和说明. [关键词]钢结构;拱壳;屋盖;有限元分析;监测;施工技术 [中图分类号]TU393.3 [文献标识码]A [文章编号]1002-8498(2016)14-0113-04 Construction Technology of Large-span and Single-layer Arch Shell Roof Steel in Natatorium of the Olympic Sports Center Shi Yuanqiang Jiang Guoping Li Hongxiang Jia Shangrui (Zhejiang Jinggong Steel Structure Group Co.Ld.Shaoxing Zhejiang 312030 China) Abstract:The natatorium steel roof of Hebei Olympic Sports Center is a large-span and single-layer arch shell steel structures.The inner truss and steel arch structures have big sections long spans and heavy weights.In addition the concrete structure under the steel cover is very plicate and wide-range which can not be constructed by large-sized cranes within the site.As a result under the condition of ensuring the underside concrete structures to be not destroyed a reasonable construction scheme to be chosen is critical to guarantee the construction schedule and quality.The paper mainly introduces and describes the construction scheme and construction measurements for the natatorium roof shell steel structures. Key words:steel structures;arch shell;roofs;finite element analysis;monitoring;construction 1工程概况 脚固定于2层楼面混凝土柱顶.拱壳结...
2014年3月上 施工技术 第43卷第5期 CONSTRUCTION TECHNOLOGY 65 D0I:10.7672/5js2014050065 奥兰大清真寺穹顶模板施工技术 张明禄1,刘树洪,董毅1,王力尚2 (1.青建集团股份公司,山东青岛266071;2.中建中东有限责任公司) [摘要]弯顶屋面造型在阿尔及利亚属于比较普遍的一种伊斯兰建筑风格,弯顶屋面一般为半球屋面造型,清真寺 祈祷大厅及公共建筑屋面多采用此造型.此种结构大多采用钢筋混凝土结构,各个施工环节难度均大于普通混凝 土结构.在实践的基础上,总结了比较完善的穹顶半球屋面施工技术,能够满足结构施工要求. [关键词]模板;穹顶;施工技术;清真寺 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2014)05-0065-04 Construction Technology of Dome Formwork of Oran Mosque Zhang Minglu' Liu Shuhong' Dong Yi' Wang Lishang (1.Qingjian Group Co.Lad.Qingdao Shandong 266071 China; 2.China State Construction Engineering Corporation Middle East L.L.C. Abstract:the dome roof shape belongs to a kind of Islamie architectural style prevalent in Algeria the dome roof generally is hemispherical roof shape of mosque prayer hall and public buildings roof.The most of structure is the reinforced concrete it is more difficult for construction technology than normal concrete structure.This paper summarizes a set of construction technology of roof dome hemisphere on the basis of practice which meets the requirement of structure construction. Key words:formwork dome;construction;mosque 1工程概况 奥兰大清真寺(见图1)位于北非阿尔及利亚奥 兰市中心,由祈祷大厅和宣礼塔组成,祈祷大厅总 建筑面积为6100m2 分为9个区,其中中心区F区 为祈祷大厅中心,±0.000以下是2层地下车库, ±0.000以上第1层为祈祷大厅,大厅高10.60m 第 2层为装饰性半圆拱门,层高为7.40m 祈祷大厅总 高为18.00m 大厅顶板以上是外径33.93m的半球 图1奥兰大清真寺效果 Fig.1 Effect of Oran Mosque 穹顶,穹顶顶部标高为39.965m 穹顶混凝土半球壁 厚为22.5cm. 以奥兰大清真寺为例说明,该项目穹顶位于标 整个弯顶是由8根直径900mm的混凝土圆柱 高为18.000m的屋面上,穹顶天窗上标高23.000m 支撑,8根圆柱在屋面由1道800mm×600mm的圆 处为穹顶半球,半球为钢筋混...
2012年8月下 施工技术 第41卷第371期 CONSTRUCTION TECHNOLOGY 79 大风戈壁地区路基土石方施工挖运成本分析 林兵 (中铁二局股份有限公司,四川成都610032) [摘要]以新建兰新铁路第二双线站前工程项目为背景,通过详细介绍土石方工程的直接成本构成,在综合考虑包 括可控和不可控影响因索的基础上,得出各构成要索对土方挖运成本的影响程度.对土石方工程成本进行分析, 提出大风戈壁区土石方工程成本控制措施,进而降低工程造价. [关键词]项目管理;铁路工程;路基土石方;工程成本;分析;控制 [中图分类号]TU723.3 [文献标识码]A[文章编号]1002-8498(2012)16-0079-03 Analysis on Cost of Subgrade Construction at Gobi Area Lin Bing China Railway No.2 Erju Co. Ltd.Chengdu Sichuan 610032 China) i Abstract:Taking the Lanzhou-Xinjiang double line station project as engineering background this paper describes the cost position of earthwork construction and the influence of every part on the total cost. Based on the consideration of controlled factors and uncontrolled factors the influence degree of these factors for subgrade construction cost is put forward.At the same time the corresponding measures are given to reduce the engineering cost. Key words:project management;railway engineering;subgrade earthwork;engineering cost; analysis;control 土石方工程广泛存在于道路、渠道、矿山等工1.2工程特点 程建设中,是工程建设的基本组成部分,同时其工 1)气候特点夏季高温、寒冬漫长、风寒严重、 程费用在总成本中占很大比例1门.徐永杰2和赵生态脆弱.需要注意的是,受百里风区风口影响, 金生等3)针对大型土石方工程施工中施工机械的 DK1489000一DK1540段处于著名的新疆“百里风 配套组合问题,提出施工机械联合作业的最低成本 区”范围内,强风多集中于每年春秋两季.根据吐鲁 .控制办法.张期星[4通过经济运距分界点的比较番气象资料,最大风速达25~40m/s 根据历年气象 得出最佳经济运距分界点,比平均经济运距分界点 资料,主导风向为N10°~50°W.年平均强风日数(> 更加合理.罗天宝等[s根据土石方施工特点和规8级)100~112d (>10级)11~14d. 律,探讨了定额计价方式及清单计价方式下土石方 2)施工特点线路长、技术要求高、施工工艺 工程控制对建设项目工程造价的影响.如何有效 新、结构物量大. 控制土石方工程成本仍是一个亟待解决的问题. 3)地质特点细圆砾土不均匀分布于地表,厚 1工程概况 0.6~7.2m....
2013年10月上 施工技术 第42卷第19期 CONSTRUCTION TECHNOLOGY 85 D0I:10.7672/gj82013190085 大面积吹填砂施工沉降预测分析与研究 肖策,褚丝绪,徐国良,孟繁奇,姜云龙 (天津二十冶建设有限公司,天津300301) [摘要]以吹填砂场地平整工程为例,模拟场地内排水通道形式,利用淤泥的力学性能指标综合估算施工期内软土 层产生的沉降量,将沉降量考虑到吹填施工中,控制吹填砂顶面标高符合规范要求正误差,避免二次吹填或下层填 料补填现象,节约了施工成本,缩短了施工工期. [关键词]地基;吹填砂;沉降;固结度 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2013)19-0085-03 Settlement Forecast Analysis and Research on Large Area Hydraulic Fill Sand Construction Xiao Ce Chu Sixu Xu Guoliang Meng Fanqi Jiang Yunlong (Tianjin No.20 Metallurgical Construction Co.Lad.Tianjin 300301 China) Abstract:Taking a hydraulic fill sand ground leveling project as an example this paper simulated drainage channels in site estimated the settlement of soft soil in construction period using the mechanical performance indexes.The settlement was considered in hydraulic fill construction to make the hydraulic fill sand top elevation under control and avoid dredger fill again or lower filling to fill.Results show that it can reduce construction cost and shorten the construction period. Key words:foundations;hydraulic fill sand;settlement;consolidation degree 1工程概况 工程性质较差,不能作为天然地基,为本工程地基 规划吹填地块为横琴新区水质净化厂软基处处理主要层位,层厚0.5~3.6m.②淤泥该层厚 理工程,本次吹填工程范围为规划水质净化厂及周 度大,具有高含水量、高压缩性、大孔隙比、高灵敏 界地区,工程设计吹填面积为14.5万m2 吹填设计 度、低强度等特性,具有流变、触变特征,易导致路 高程2.500m 场地吹填方量49.2万m3 围堰吹砂 基沉降和失稳,为地基软弱下卧层,该层需要处理, 1.7万m3. 层厚23.6~30.1m.③黏土该层埋深较大,具有 吹填砂场地平整是软土地基中常用的处置方 中等~高压缩性,有一定强度,可作为地基下卧层, 法,由于吹填砂含水量及自重大,天然状态下软土 层厚5.4~8.1m.④砾质黏性土该层具有较高强 非常松散,呈淤泥状,吹填施工期间将产生较大沉 度和低压缩性,为地基良好下卧层,层厚2...
[关键词]钢结构;非预应力;弦索结构;安装 [中围分类号】TU758 【文献标识码]A [文章编号]1002-8498(2015)20-0090-03 TheInstallationProcess of Large Span Non-prestressed String Truss Structure ZhangYanfang',Sun Chang'an (1.Department of Engineering Management, Shanxi Architetural College,Taiyuan,Shanxi 030006,China; 2.CSCEC City Construction Development Co.,Lud.,Bejing 100037,China) Abstract:Because of its structure characteristics of light weight and large bearing capacity of prestressed string truss structure,it is widely used in large span structure. But because of the many tensioning process during steel cable construction,it has great influence on the construction period and cost. This paper mainly introduces the non-prestressed string truss structure,which applies rigid connection of both ends and the hinge connection in the middle of the structure, and a piece of string (steel bar) at the steel truss structure that is beautiful and light,also reduces degree of dificulty of the site construction and makes the construction process simply and reduces the construction cost effectively. This paper discusses the processing and installation technology of this kind of structure,and takes a cable factory construction for example. Key words:steel structures; non-prestressed; string truss structure; installation 1工程概况 2安装方案对比 非预应力张弦桁架结构采用两端刚接、中间铰 1)高空散拼法在钢拱下部搭设满堂红脚手 接与下部不需要施加预应力的钢棒进行联合受力。
2011年5月下 施工技术 第40卷第341期 CONSTRUCTION TECHNOLOCY 101 大跨空间钢结构预应力施工技术研究与应用 大跨空间钢结构预应力施工技术分析 罗斌,郭正兴 (东宙大学土木工程学院,江苏南京210096) [摘要]为实现基准温度下设计初始态的“力”和“形”的统一,在正式施工前必须进行一系列的预应力施工分析. 介绍了主要预应力施工分析的方法及其适用性,通过等效预张力的找力分析,满足初始态对“力”的要求:通过零状 态的找形分析、满足初始态对“形”的要求;通过环境温度影响分析,满足初始态对“基准温度的要求;通过施工过 程分析,满足过程与目标的统一,并保证过程的安全性;通过有应力制作索长计算,将制作索长与初始态的形和索 力或者与零状态的形和等效预张力相对应. [关键词]大跨空间钢结构;预应力;拉索;施工分析 【中图分类号]TU245 [文献标识码]A [文章编号]1002-8498(2011)10-0101-06 Research and Application of Large-span Space Steel Structures Prestress Construction Technology --Prestress Construction Technology Analysis of Large-span Steel Space Structures Luo Bin Guo Zhengxing (School of Cicil Engineering Southeas Unisersity Nanjing Jiangsu210096 China) Abstract:Before the construction beginning a series of prestress construction analysis are done to realize the force and deformation unifying at the reference temperature.The method and application of main prestress construction analysis are introduced then the demands of force deformation and reference temperature at beginning state are attained through the analysis of force-finding of equivalence prestress deformation-finding at zero state and environment temperature effect.The uniform of process and aim are obtained and the construction safety is guaranteed through the construction analysis.Through the calculation of making cables the correspondence of making cable and force and deformation at the beginning state or zero state is ensured. Key words:large-span steel space structures...