施工技术 2014年10月上 20 CONSTRUCTION TECHNOLOGY 第43卷第19期 D01:10.7672/gjs2014190020 劈离竹材土钉墙基坑围护的研究与应用* 朱良锋,洪水良,裘国荣 (浙江宝业建设集团有限公司,浙江绍兴312028) [摘要]基坑围护作为一项临时工程,作用期限短.土钉墙是一种应用较为广泛的基坑围护形式,将土钉墙中的钢 材用竹材代替,作为基坑工程中的主要受力构件,既能满足强度上的设计要求,又能满足时间上的设计要求,并且 基坑作用期满后,竹材自动腐烂,不会对后续工程造成影响,也会减轻环境上的污染并降低造价. [关键词]地下工程;基坑;土钉墙;劈离竹材 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)19-0020-04 Study and Application of Split Bamboo Soil Nailing Wall in Foundation Excavation Engineering Zhu Liangfeng Hong Shuiliang Qiu Guorong (Zhejiang Baoye Construction Group Co.Ltd.Shaoxing Zhejiang 312028 China) Abstract:As a temporary engineering foundation excavation protecting is of short construction period. Soil nailing wall is a widely applied kind of foundation excavation protecting.Instead of steel in the soil nailing wall bamboo is used as the main force ponent.The design requirements of intensity and construction period are both satisfied and moreover split bamboo soil nailing will reduce the costs and get deposed when the foundation excavation engineering is finished which makes little influence on later engineering and reduces environmental pollution. Key words:underground;foundation excavation;soil nailing wall;split bamboo 土钉墙作为基坑围护的一种主要形式,具有造性避免因土钉过长超越用地红线从而为土地的后 价低、施工快且性能可靠等优点,在分布黏土、粉土续开发利用设置障碍,达到绿色环保的目的. 和淤泥质土等地区的应用非常普遍.土钉墙由被1竹材的主要物理力学性质 加固土体、土钉以及混凝土面层组成.土钉依靠与 竹材材质轻、强度高,索有“植物钢铁”的美誉. 接触土体间的黏结摩阻力,与周围土层形成复合土 毛竹是竹材中的主要品种,径大壁厚.不同竹龄对 体,在土体发生变形时被动受力,再通过与混凝土 毛竹的物理力学性质影响较大,一般3~4年生毛竹 面层错固对土体进行加固. 的物理力学性能最佳.在劈离竹材土钉墙基坑围...
施工技术 2012年1月下 66 CONSTRUCTION TECHNOLOGY 第41卷第357期 利通广场M600D内爬塔式起重机安装、 爬升与拆除技术 吴洪章,郭青松,万利民,苏亚武,王四久,陈仙贵,刘勇 (中国建筑第八工程局有限公司广州分公司,广东广州510665) [摘要]利通广场主体结构采用钢斜撑框架混凝土核心筒结构,高302.9m.结合本工程实际情况及通过方案比 选,施工阶段采用2台M600D内爬动臂式塔式起重机.制定了塔式起重机安装,拆除方案及各项安全管理措施, 闸述了内爬式塔式起重机的平面布置、型号选择、安装、爬升及拆除技术,保证了起重机安全运行、满足施工需要, 有效保证了施工工期. [关键词]高层建筑;塔式起重机;安装;爬升;拆除 [中图分类号]TU974 [文献标识码]A [文章编号]1002-8498(2012)02-0066-04 Installation Climbing and Demolition Technology of M600D Internal Climbing Tower Crane in Litong Square Wu Hongzhang Guo Qingsong Wan Limin Su Yawu Wang Sijiu Chen Xiangui Liu Yong (China Construction Eighth Engincering Dirision Co.Lad.Guangzhou Branch Guangzhou Guangdong 510665 China) Abstract:The Litong Square is designed as steel diagonal brace frame and conerete core tube structure with height of 302.9m.Based on the scheme selection and actual situation two M600D internal climbing tower cranes are adopted.The plans of installation and demolition for the tower cranes and safety control measures are made.Besides the plan layout model choice installation climbing and demolition of the tower crane are introduced.With the mentioned technologies safe operation of the tower crane and construction time are ensured.The construction can be pleted successfully. Key words:tall buildings:tower cranes;installation:climbing:demolition 1工程概况 利通广场位于广州市珠江新城B24地块,总建 筑面积15.9万m2 地下5层,塔楼59层,建筑高度 .3342.9m 302.9m 钢斜撑框架钢筋混凝土核心筒结构体 系.塔楼平面儿何尺寸约为45.7mx45.7m.为满 3号塔式起重机 足施工垂直运输需要,在核心筒内布置了2台 M600D内爬塔式起重机,臂长55m(见图1). 2施工...
2015年1月上 施工技术 第44卷第1期 CONSTRUCTION TECHNOLOGY 65 D0I:10.7672/sgjs2015010065 利用智能顶升系统无损回收钢护筒施工工艺 李果1,徐胜祥2,孔庆林2 (1.绍兴职业技术学院建筑与设计艺术学院,浙江绍兴312000; 2.浙江省交通工程建设集团第三交通建设有限公司,浙江杭州310051) [摘要]介绍了使用一种智能顶升系统进行钻孔灌注柱钢护筒回收的施工工艺.该工艺具有降低成本、快速、安全 的特点,利用可自由变形的密封圈将钢护筒与柱头上部密封,使用高压气泵、高压液泵对其顶部密封腔加一定的压 力,将钢护筒从混凝土桩中顶出,达到回收钢护筒的目的. [关键词]柱;钻孔灌注桩;钢护简;回收;顶升系统;施工工艺 [中图分类号]TU753.3 [文献标识码]A[文章编号]1002-8498(2015)01-0065-02 Construction Technology of Recovering Steel Casing by Using Intelligent Lifting System Li Guo' Xu Shengxiang? Kong Qinglin2 (1.College of Architecture and Art Design Shaoxing Vocational Technical College Shaoxing Zhejiang 312000 China: 2.The Third Company of Zhejiang Transportation Engineering Construction Group Hangzhou Zhejiang 310051 China) Abstract:This paper introduces a construction technology for recovering steel casing by a intelligent lifting system.The technology is fast safe and has low cost.The intelligent lifting system recovers the steel protective pipe of bored pile by seal circle and seals the steel pipe and the head of bored pile up.It adopts both high-pressure air pump and high-pressure liquid pump to put pressure on the head sealing chamber to push the steel pipe out of bored pile. Key words:piles;bored piles;steel casing;recovery;lifting system;construction 在进行钻孔灌注桩施工过程中,由于水质不稳路1、江苏盐城大桥2、天津站交通枢纽工程31等 定或受地表、地下水系影响,采用强度合格的钢管 工程中应用;另一种是使护筒和拔出设备组成密闭 护壁对桩孔进行保护,以稳定孔壁,防止孔透水等系统,利用压力推出护筒,目前在杭州湾跨海大 因素影响施工进度及安全.在灌注桩混凝土凝结 桥中应用.在温州灵昆大桥拼宽工程桥梁钻孔 硬化时,钢护筒约束混凝土桩芯使其强度提高,但 灌注桩的施工中,采用了一种自行设计...
施工技术 2010年3月 106 CONSTRUCTION TECHNOLOGY 第39卷第3期 利用CAD三维技术辅助解决异形屋顶施工 李纲,娄秋阳,谷宏志,杨鹏,王琦 (天津市建工工程总承包有限公司,天津300384) [摘要]某工程屋顶结构由多坡屋面、4个角部各一个壳体塔楼及2个中部被台塔楼组成.由于空间结构复杂,无 法用二维设计图纸完整清晰地表达,给屋面结构施工带来很大困难.利用CAD三维辅助施工,完成了复杂建筑空 间形体的三维模型分析,较好地解决了空间曲线、曲面的定位、形体的生成、空间构件的调整等技术难点,与二维平 面图纸加实物模型相比较,达到了速度快、表达清晰准确,并可以多角度观察对象,预先发现构件不合理的情况,并 及时修改调整. [关键词]屋顶;异形结构;三维技术;CAD [中图分类号]TU717 [文献标识码]A[文章编号]1002-8498(2010)03-0106-04 Using CAD 3D Technique to Solve Special Shape Roof Construction Problems Li Gang Lou Qiuyang Gu Hongzhi Yang Peng Wang Qi Tianjin Construction Engineering Main Contracting Co.Lid.Tianjin 300384 China) Abstract:Some roof structure is posed of multi-alope roof four shell towers in each cormer and 2 prisms in middle part.Because of plex space structure the roof cann't be showed perfectly by 2D design draws which makes very much difficult for roof construction.By using CAD 3D technique 3D model analysis is pleted for plex roof structure some technique difficult is solved successfully such as location of space curves and arc surface body build and adjustment of space member etc. Comparing with 2D drawing and model 3D technique can view perfectly objects from many directions. When beforehand finding unreasonable members these members can be adjusted in time. Key words:roof;special shape structure;three dimension (3D)technique;CAD 1工程概况 2.1建立塔楼平面控制网 天津城投大厦建筑面积31458m2 为欧式建筑,地 4个壳体塔楼位置的确定关系着建筑物的整体形 下2层,地上6层.屋顶结构由多坡屋面、4个角部各象.首先根据本层的内控点初步确定壳体塔楼的位 一个壳体塔楼及2个中部棱台塔楼组成(见图1),为置,4个塔楼呈矩形布置...
2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 87 D0I:10.7672/5js2015070087 利用BP-ANN模型进行深基坑变形预测分析的探讨 赵健赟1,哈华林2,宋宜容1 (1.青海大学地质工程系,青海西宁810016;2.青海岩土工程勘察咨询公司,青海西宁810000) [摘要]利用LM算法和自适应学习速率的动量梯度下降法对BP-ANN模型进行改进,发现LM算法在建立深基坑 变形预报模型时具有更高的学习效率,且输人量间的相关程度对网络效率无显著影响,隐含层节点数可通过仿真 误差分布图确定和优化.仿真与预测结果表明,在平稳观测时间序列内该模型其有更高的预测精度,在实际深基 坑监测预报中值得推广应用. [关键词]地下工程;深基坑;变形:预测;BP-ANN模型 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2015)07-0087-03 Discussed on Deep Foundation Excavation Deformation Prediction and Analysis Using BP-ANN Model Zhao Jianyun' Ha Hualin2 Song Yirong (1.Department of Geologic Engineering Qinghai University Xining Qinghai 810016 China; 2.Geotechnical Engineering Inuestigation Consulting Company of Qinghai Xining Qinghai 810000 China) Abstract:This paper improves the BP-ANN model using LM arithmetic and adaptive leaning rate gradient descent method and discovered that the former has higher efficiency in establishing deep excavation deformation prediction model.In addition the degree of correlation of the input has no obviously impact on the net's efficiency and the hidden layer's number can be established and optimized through simulation error distribution diagram.The result of simulation and predication indicated that the model has high prediction accuracy in smooth and steady observation time series and it is worthy of popularization in the practice of deep foundation excavation deformation prediction and analysis. Key words:underground;deep foundation excavation;deformation;predictio...
2015年10月上 施工技术 第44卷第19期 CONSTRUCTION TECHNOLOGY 87 D0I:10.7672/8js2015190087 利比亚Sidi Alsaeh地区强夯处理地基承载力测试 闫建1,张武,张波,张少琴2 (1.中国建筑科学研究院地基基础研究所,北京100013;2.湖北省地质察基础工程公司,湖北武汉430070) [摘要]对利比亚Sidi Alsaeh地区100O0套住宅项目强夯处理地基进行了标准贯入试验研究,并采用不同尺寸的 方形承压板对强夯处理前、后挖方和填方区域地基进行浅层平板载荷试验,得出了标准贯入试验检测Sidi Alsaeh 风积砂强夯处理地基是可行的.Sidi Alsaeh地区标准贯人试验锤击数与地基承载力存在相关性,通过浅层平板载 荷试验确定的地基承载力与压板影响深度的标准贯人试验锤击数的趋势性关系,确立了深层标准贯入试验锤击 数N的检测标准. [关键词]地基:强夯;标准贯人试验;平板载荷试验;承载力 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2015)19-0087-04 The Bearing Capacity Test of the Dynamic Compaction Ground Treatment in Sidi Alsaeh Libya Yan Jian' Zhang Wu' Zhang Bo' Zhang Shaoqin (1.Institute of Foundation Engineering China Academy of Building Research Beijing 100013 China; 2.Geological Inrestigation Foundation Construction Company of Hubei Province Wuhan Hubei 430070 China) Abstract:The standard penetration test did with the dynamic paction ground treatment of the project named 10 000 sets of residential in the district Sidi Alsaeh Libya.At the same time the shallow plate load test was used to the excavation and fill area before and after dynamic paction process used the different sizes square bearing plate.The experimental data shows that the wind-blown sand paction ground treatment by the standard penetration test is feasible in Sidi Alsaeh.It found a correlation between the standard penetration test hammer number and the bearing strength of the ground in Sidi Alsaeh area. According to trend relationship of the foundation bearing ...
[关键词]钢结构;冷弯薄壁型钢;组合截面;设计规范;试验;理论研究 [中图分类号】TU392.5;TU758[文献标识码】A[文章编号]1002-8498(2013)15-0001-08 StateoftheCold-formedThin-walledBuilt-upSectionMembers ZhaoYijie,Zhang Qilin (College ofCivilEngineering,TongjiUniversity,Shanghai200092,China) Abstract;Cold-formed thin-walled built-up section members have been widely used in low and mid-rise residential buildings due to its flexible shapes and good mechanic behavior,however, relating research achievements and design specifications are quite insuficient.Firstly,this paper introduces the basic characteristics and engineering applications of these types of built-up member, and then the main research methods as well as design guides are summarized. A state of the art review of recent experimental and theoretical research on built-up members is presented,both domestic and abroad. Finally, the major inadequacies and future research direction are pointed out. Key words:steel structures; cold-formed thin-walled steel; built-up section; design codes; experiments; theoretical research 0.引言 料十分乏,因此,顺应冷弯薄壁型钢结构的发展 冷弯薄壁型钢在建筑行业中被广泛应用已有趋势,及时开展组合截面构件的研究是十分必要的。
[关键词]加劲Z型钢;双向受弯构件;畸变屈曲;弯矩;性能 [中图分类号]TU391[文献标识码]A[文章编号]1002-8498(2015)08-0085-03 AnalysisonDistortionPerformanceofBidirectionalFlexuralMembers MadeofThin-wallCold-formedStiffeningZ-sectionSteel
(1.College fCiilEngineering,HebeiUnivesty ofEnginering,Handan,Hebei56038,China; 2.HebeiUniersityofEngineeringResarchInstitutefArchiectureDesign,Handan,Hebei56038,China; 3.Finance Department,Hebei University of Engineering,Handan,Hebei 056038,China) Abstract:Byusing thefinite element software ANSYS,thispaper simulated thebiaxial bending of cold formed thin-wall Z-section steel,and studied the distortional performance of the ponent under diferent stiffener height and width.The research shows that when the increasing of steel consumption is not obvious,the existenceof the stiffener significantlyinfluencesthe distortional bucking criticalmoment. By contrasting the changing of ponent critical moment and economic coefficient of five kinds of stiffener height under different stiffener widths,the effective range of the stiffener width and height is gotten. Key words: stiffening Z-section steel; bidirectional flexural member; distortional buckling; moment;performance 0引言素,加劲C型钢有效地提高了轴压构件畸变屈曲 与传统的热轧型钢相比,冷弯薄壁型钢具有强临界荷载,目前对加劲Z型钢受弯畸变屈曲性能 度高、自重轻、截面形式多样,良好的力学性能及优研究的较少,本文采用加劲Z型钢,研究双向受弯 越的经济性等诸多优点,特别是Z型钢条还有便构件的畸变屈曲性能。
施工技术 2011年7月下 110 CONSTRUCTION TECHNOLOGY 第40卷第345期 冷弯薄壁C形开孔钢梁承载力有限元分析 刘晶波1,徐宏艳,李杰2,胡永生3 (1.清华大学土木工程系,北京100084;2.广东电力设计院,广东广州510600; 3.清华大学深圳研究生院,广东深圳518055) [摘要]近年米冷弯薄壁型钢中的腹板开孔构件得到越来越多的应用,其承载力是工程设计和分析时首先需要解 决的问题.选取净跨分别为3.5 5.5m的腹板开孔C形截面梁进行竖向静力均布荷载作用下的承载力分析,建立 了有限元模型,通过对孔间距、孔洞大小,孔边距等开孔参数进行计算分析,总结了开孔参数对开孔梁极限承载力 的影响规律,并提出开孔方式优化方案.结果表明:开孔梁的孔数和孔边距是影响开孔梁极限承载力和破坏形式 的重要因案.开孔梁优化设计时应留足孔边距和避免靠近支座处的孔间腹板受压. [关键词]冷弯薄壁型钢;腹板开孔;C形截面梁;极限承载力 [中图分类号]TU391 [文献标识码]A 【文章编号]1002-8498(2011)14-0110-05 FEM Analysis on Bearing Capacity of Cold-formed Thin-walled Steel Beam with C-shaped Section Openings Liu Jingbo' Xu Hongyan' Li Jie? Hu Yongsheng (1.Departnent of Ciwil Engineering Tsinghua Uaiversity Beijing 100084 China; 2.Guangdong Electric Power Design Institute Guangzhou Guangdong 510600 China; 3.Graduate School at Shenzhen Tsinghue Uninersity Shenzhen Cuangdong 518055 China) Abstraet:The web opening beam in cold-formed thin-walled steel system has been widely used for low- rise residential building in our country and the bearing capacity of the beam is the most important in design and analysis.The FEM analysis of two spans of 3.5m and 5.5m beams with C-shaped section and slot in web plate subjected to axial pression is carried out.Finite element model is established to analyze the influence of parameters of beam with openings to the bearing capacity and optimal scheme is proposed to improve the efficiency of structural members.The study shows that the ultimate bearing capacity and failure mode...
[关键词]玻璃幕墙;冷弯单元板;冷弯玻璃;施工 [中图分类号]TU767[文献标识码]A[文章编号]1002-8498(2013)22-0084-03 ApplicationofColdWarpedPanelintheConstructionof 3DBuilding CurtainWall ShenJun,LaiJiawei (Gartner Curtain Wall(Shanghai)Co.,Lad.,Shanghai 200002,China) Abstract;Based on the construction of a 3D building curtain wall engineering experience,this paper analyzed and verified lifing program, measuring program, construction process of the key parts to illustrate the special construction method of three-dimensional building curtain wall and the application of
Key words:curtain wall; cold warped panel;cold-warped glass; construction
1工程概况 某工程位于上海虹桥,建筑物为三维造型,其 水平剖面和垂直剖面都为不规则弧线。
施工技术 2013年11月下 48 CONSTRUCTION TECHNOLOGY 第42卷第22期 D0I:10.7672/sgj2013220048 农村砖木结构住宅抗震加固新方法对比分析与研究* 刘辉,魏建友,胡亮霞,杨威1,赵作周2,朱尔玉3 (1.北京市房地产科学技术研究所,北京100021;2.清华大学土木工程安全与耐久教育部重点实验室, 北京100084;3.北京交通大学土木工程学院,北京100044) [摘要]砖木结构房屋在我国农村地区广泛使用,而这种房屋普遮无抗震设防构造措施.木屋架、德条及其他相关 构件之间没有可靠连接,在竖向、水平地震力作用下极易脱落、破坏,造成结构的整体或者部分坍塌,进而产生较大 灾害.结合实际工程,对木柱作为竖向承重体系的典型结构进行了结构抗震技术优化研究.研究结果表明,对于 无抗展构造措施的既有农村砖木结构,抗震加固技术优化后的结构体系不仅能够满足本区域的抗震设防要求,而 且经济效果明显. [关键词]加固;抗展;农村住宅;砖木结构 [中图分类号]TU398.4 [文献标识码]A [文章编号]1002-8498(2013)22-0048-04 Comparative and Analytic Research on New Methods of Earthquake Resistance Strengthening Technical for Rural Brick-wood House Liu Hui' Wei Jianyou' Hu Liangxia' Yang Wei' Zhao Zuozhou? Zhu Eryu (1.Beijing Institute of Real Estate Science and Technology Beijing 100021 China;2.Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry Department of Civil Engineering Tsinghua University Beijing 100084 China;3.School of Civil Engineering Beijing Jiaotong University Beijing 100044 China) Abstract:Brick-wood houses are widely used in rural in China with no earthquake-proof housing construction measures in general.Wooden frame structures crossbeam and other related ponents have no reliable connections which are easily fell off and destroyed by vertical and horizontal earthquake force.Combined with actual project the structural seismic technology optimize study on the typical structure of wood column as the vertical load-bearing system are introduced the study results show that the structure system with the seismic reinforcement technology optimization can meet the seismic requirements of the region and the economic effect is good. Key words:strengthening;seismic;rural residence;brick-wood structures 0引言 农村砖木结构建筑的抗震理论13进行相关深人研 在各种灾害中,虽然地震灾害不是最经常、最究具有鲜明的现实意义.该研究需要多学科密切 普遍威胁公众安全和社会发展的灾害,但由于受目 配合,涉及地震科学、材料科学、动力学、工程结构 前科学技术发展的局限,现有的技术手段和仪器设 学、数学以及计算机技术等.各国学者在研究过程 备还不能完全准确地对其进行预测预报,其发生具 中均是针对具体研究目标对其中某些方面进行简 有很大的不可预见性和不确定性;一旦发生较大烈 化或采用假定,从而尽可能建立较为简化的分析模 度的地震灾...
施工技术 2016年8月下 96 CONSTRUCTION TECHNOLOGY 第45卷第16期 D0I:10.7672/8js2016160096 内蒙古科技馆新馆异形幕墙综合施工技术 刘丙字,倪吉华2,孙瑞莲2,吴治刚2,段天明2 (1.北京建工路桥工程建设有限责任公司,北京100123;2.北京港源建笑饰工程有限公司,北京102211) [摘要]内蒙古科技馆工程建就造型奇特,外立面采用多种形式的幕实不规刚的曲面,设计和工雅虚很大. 施工前进行了深化设计,对各种施工技术进行了可行性分析,提前时施工过程中的童点和难点进行了分析并提出 解决港施.详细介了各种不同材料莱墙的施工技术.施工过程中运用M技术进行建和测量放样,确保了施 工精度. [关键词];建筑模型;安梨;测 [中图分类号]TU758.1[文献标识码]A[文章编号]1002-8498(2016)16-0096-06 Construction Technology of Irregular Curtain Wall Engineering in Inner Mongolia Science and Technology Museum Liu Bingyu' Ni Jihua2 Sun Ruilian2 Wu Zhigang2 Duan Tianming㎡ (1.BCEG Road&Bridge Construction Engineering Co.Ld.Beijing 100123 China; 2.Beijing Gangyuan Architectural Decoration Engineering Co.Ld.Beijing 102211 China) Abstract:Inner Mongolia Science and Technology Museum has special shaped architectural modeling. The facade uses several of curtain walls to form the irregular surface modeling which results in design and construction difficult.Before construction deepened design was done various construetion techniques were carried out a feasibility analysis in advance and the construction important and difficult points were analyzed and propose solutions were put forward.The various construction techniques of different materials curtain were introduced in detail.During construction BIM technology is used for modeling and measurement lofting which ensures construction accuracy. Key words:curtain wall;building information model(BIM);installation;measurement 1工程概况 内蒙古科技馆新馆工程(见图1),位于内蒙...
施工技术 2014年5月上 86 CONSTRUCTION TECHNOLOGY 第43卷第9期 D01:10.7672/js2014090086 内爬式塔式起重机高空拆除及换塔施工技术 张肇庆,吴建青2,郭华法2,吕兆健,宫静静 (1.中建一局集团第五建筑有限公司,北京100024;2.义乌市建筑工程质量监督站,浙江义乌322000) [摘要]义乌世贸中心项目由4栋塔楼及5层裙房组成.由于该地区雨季时间跨度大,易受大雨及台风影响,给施 工带来较大难度.通过超高层酒店起重设备的更换、选型、布置和安装,对超高层建筑大型起重机械的相关技术进 行了研究.详细深入分析了内爬升式塔式起重机高空拆除的原因,详细介绍了塔式起重机更换施工技术.塔式起 重机更换完成后,施工速度大大加快,且消除了原有塔式起重机的诸多安全隐患. [关键词]高层建筑;塔式起重机;更换;基础 「中图分类号1TU74 [文献标识码]A [文章编号]1002-8498(2014)09-0086-05 Removal of Inner Climbing Tower Crane and Replacing Technology Zhang Zhaoqing Nu Jianqing2 Guo Huafa2 LǚZhaojian' Gong Jingjing (1.China Construction First Group the Fifth Construction Co.Ltd.Beijing 100024 China; 2.Yiwu City Construction Engineering Quality Supervision Station Yicu Zhejiang 322000 China) Abstract:The Yiwu World Trade Center project consists of four tower buildings and five-layer annex. Because the rainy season is rather long in this area the heavy rains and typhoons can easily affect the project which brings great difficulty to construction.This paper researches technology for large hoisting machines of super-high-rise buildings from tower cranes replacing selection layout and installation technology of super-high-rise buildings.The removal causes of inner climbing tower crane are analyzed. Moreover the replacing technology of tower crane is introduced.After the tower crane replacing the construction speed is more greatly accelerated and many of the safety hazards for original tower crane are eliminated. Key words:tall buildings;tow...
2012年9月下 施工技术 第41卷第373期 CONSTRUCTION TECHNOLOGY 117 内河沉管隧道浮运沉放施工技术 王朝辉 (中铁十八局集团第五工程有限公司,天津300456) [摘要]天津市滨海新区中央大道海河隧道穿越海河,采用沉管法施工工艺.由于位于内河上施工,其管段浮运和 沉放与传统海上或者江河上沉管施工有较大差异.从管段浮运、二次陋装、沉放、初步对接、拉合、基底注浆和回填 覆盖等施工工艺上,开辟了一条简单、实际可行的沉管隧道浮运沉放新技术路径. [关键词]隧道工程;沉管法;浮运;沉放;拉合;对接 [中图分类号]TU7;U455 [文献标识码]A [文章编号]1002-8498(2012)18-0117-04 Construction Technology of Floating and Sinking of Immersed Tunnel Crossing Inland River Wang Chaohui China Railway Eighteen Bureau Group Five Company Tianjin 300456 China) Abstract:Immersed technology is adopted in Haihe River Tunnel of Central Road in Binhai New Area Tianjin.Because the tunnel is designed for crossing inland river so its floating and sinking are very different with normal immersed tunnels.Key construction technology of the immersed tunnel for inland river is introduced to developing a new feasible technical process including tunnel segments floating secondary outfitting sinking initial position bination underground grouting and backfilling. Key words:tunnels;immersed method;floating:sinking;bination;connection 天津市滨海新区中央大道海河隧道工程为我为80 5m 预制完成后在坞内进行拉合,坞内预制平 国高烈度区第一条沉管隧道,也是我国北方第一条面布置如图1所示. 沉管隧道.该隧道穿越海河,位于内河上施工,与 以往国内海上或者江河施工的沉管隧道相比,在管 段浮运、沉放上有很大的差别.海上、江河上沉管 隧道施工,由于河面较宽、水流急、海浪高,采用了 E3-1 E2 E1 船舶拖运、大型门架、EPS定位系统等设备辅助控 80m 85m 85m 制;而海河隧道工程位于内河施工,由于流速、水位 3-25m 可以通过内河闸门控制,从而开辟了一条简单、实 际、可行的沉管隧道浮运沉放新途径. 1工程概况 海河隧道工程位于天津市滨海新区,临近天津 图1沉管隧道干坞内预制平面 Fig.1 Plan of prefabricated segments in dry dock 港,是连接滨海新区塘沽、大港、汉沽的重要快速通 of the immersed tunnel 道——中央大道...
[关键词]地下工程;深基坑;旋挖灌注桩;内支撑;预应力锚索;监测 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2012)07-0031-03 DeepFoundationExcavationSupport Technology ofInternal BracingRowPiles Combined with Anchor RowPiles Li Jing,Li Mingyang (Shenzhen Branch of CSCEC-Pauly y.Construction Company Ld.,Shenzhen,Guangdong 518003,China) Abstract:Construction environment of some deep foundation excavation is plex.According to scheme parison, internal bracing row piles bined with anchor row piles are adopted. Two reinforced introduce construction technology of rotary bored pile,rotary jet grouting pile,inner suport and prestressed anchor cable,and propose points for atention.Monitoring results show that deformation of foundation excavation is small,and good technical and economic benefits are obtained. Key words:underground;deep foundation excavation;rotary bored pile;inner supports;prestressed anchor cable;monitoring 1工程概况 汉国城市商业中心位于深圳市福田区,地处深 深南大道 福田医院住院楼 南大道与福明路交叉口西南角。
[关键词】幕墙;内循环呼吸幕墙;设计;安装;玻璃;石材;施工技术 [中图分类号]TU767.6 [文献标识码】A[文章编号】1002-8498(2012)03-0058-06 TheApplicationofInternalCirculationVentilationCurtainWall in Jiaming Center Project Chen Minmin',WuXuejun',Sun Ruqiang',Yu Shengfu',Chen Jianhua² (1. China Consruction First Division Group the Fijfh Co.,Ld. ,Beijing 100024,China; 2.Wuhan Lingyun Building Decoration Engineering Co.,Lad.,Wuhan,Hubei430023,China) Abstract:Intermal circulation ventilation curtain wall is suitable for the northerm environment.The authors introduce structure design,working principle,construction technical characteristics and energy saving measures of internal circulation ventilation curtain wall used in the Beijing Jiaming Center Project. Through the engineering practice,some technique difficulties on ventilation system design and installation of the glass-stone posite curtain wall are solved innovatively. These innovative measures can save energy,protect environment and reduce noise.Construction period,quality and safety are achieved,and economic and social benefits are gained. Key words: curtains;intermal circulation ventilation curtains; design;installation;glass; stone; construction 呼吸幕墙是双层玻璃幕墙,由于在内、外两层 气较多,尤其可吸人颗粒物和昆虫非常严重,采用 玻璃间设置了供空气流通循环用的空气腔而得名。
2015年9月上 施工技术 第44卷第17期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/sgj82015170095 内倾外斜单元体节能玻璃幕墙施工技术 李庆达,曾令锐,李伟铭,李蓉 (中建三局集团有限公司(北京),北京100097) [摘要]结合融科智地联想园区B座综合办公楼等4项工程内倾外斜单元体节能幕墙施工情况,分析了Low-E节 能玻璃的特性,介绍向内倾斜和向外倾斜单元体玻璃幕墙的施工部署,阐述了内倾外斜大板块单元体玻璃幕墙的 施工流程,应用该技术可提高内倾外斜单元体节能幕墙的施工效率和施工质量. [关键词]幕墙;玻璃幕墙;单元体;槽式埋件;施工技术 [中图分类号]TU767 [文献标识码]A [文章编号]1002-8498(2015)17-0095-03 Construction Technology of Energy-saving Glass Curtain Wall with Introversion and Outward Inclination Unit Body Li Qingda Zeng Lingrui Li Weiming Li Rong China Construction Third Engineering Bureau Co.Ltd.Beijing) Beijing 100097 China) Abstract:Combined with the construction of the energy-saving glass curtain wall with introversion and outward inclination unit body for Ray Lenovo Park Block B Office Building project as well as other 3 projects this paper analyzed the characteristics of low emissivity energy-saving glass introduced two construction deployments of glass curtain walls with introversion and outward inclination unit body.This paper introduced the construction process of glass curtain wall with introversion and outward inclination unit body in detail.In this way the technology improved construction efficiency and construction quality of the energy-saving glass curtain wall with introversion and outward inclination unit body. Key words:curtain walls;glass curtain walls;unit body;trough type embedded parts;construction 随着时代的发展,建筑造型也趋于千变万化,是集餐饮、影院、购物、办公室、会议室及各类机房 单元体幕墙有着工厂组装质量控制好、现场拼装施 于一体的高端商务写字楼(见图1). 工进度快等优点,更加适应不...
[关键词】公路工程;高速公路;收缩装置;梁板内模;预制梁板;施工技术 [中图分类号】U448.14[文献标识码]A[文章编号]1002-8498(2016)24-0092-02 ApplicationofBeamSlabInternalFormworkwith ShrinkingDeviceinPrecastBeam YuanZhen,YangYihui,WangXiaoyu (ChinaConstructon SixthEngineering DiisionBridgeCo.,Ld.,Chongqing402260,China) Abstract:The precast beam segment of Jingyu toTonghua inGl1 Hegang-Dalian expressway adopted a device which has a shrinkage device in beam and slab internal formwork. Device makes the beam and slab internal formwork technology construction convenient and quick,ann,fast break,less template juncture,good integration, they can guarantee the beam and slab internal structure size,saving construction cost and improving construction quality and speeding up the construction progress. The purpose of good social benefit and economic benefit were obtained finally. Key words:roads construction;expressway;shrinking device;beam slab internal formwork;precast beam and slabs;construction 0引言 中40m预制T梁110片,30m箱梁288片,25m箱梁 工程管理的重点在于把握施工过程中的质量、48片,10m空心板75片,13m空心板222片。
2010年7月 施工技术 第39卷第7期 CONSTRUCTION TECHNOLOGY 105 兰州某基坑加固抢险方案设计 梁得常,朱景,刘勇 (兰州高阳房地产公司,甘肃兰州730070) [摘要]兰州地区基坑开挖,常至黄土层、卵石层或泥岩层,因地下水作用,下部黄土层或泥岩层软化,基坑出现软 根现象,极易造成局部塌方.通过工程抢险实例分析了其中原因,同时提出了抢险方案、施工设计的具体措施.实 践表明,上部加设预应力错杆、下部加设竖向微型钢管桩、木桩、加密网筋、加大混凝土体喷射厚度是兰州地区基坑 抢险加固的有效措施. [关键词]预应力铺杆;钢管桩;木桩;基坑加固 [中图分类号]TU753.8 [文献标识码]A [文章编号]1002-8498(2010)07-0105-03 Scheme Design on Foundation Excavation Strengthening in Lanzhou Liang Dechang Zhu Jing Liu Yong Lanshou Gaoyang Real Estate Co.Lanshou Gansu 730070 China) Abstract:The foundation in Lanzhou was always excavated to loess layer cobble layer or marl layer. Because of underground water loess or marl layer is easy soften so landslide happen frequently in the foundation foot.By practical engineering the authors analyze the landslide factors and put forward emergency scheme and construction technology.The practical strengthen effect shows that some measures such as setting prestressed anchor in the upper and vertical mini steel pipe pile in the bottom wood pile densified steel bar mesh and thicken sprayed concrete are effective for strengthening foundation landslip in Lanzhou area. Key words:prestressed anchor;steel pile pile;wood pile;foundation excavation strengthening 从20世纪后期开始,土钉支护已逐步占领兰州基10m 后要求在原支护深度基础上继续向下开挖2.5m 坑支护的主导地位.从最初的完全桩支护,逐步过渡施工方在没有继续加强支护的条件下完成加深开挖, 为大部分采用土钉支护、重点工程或工程的重点部位基坑出现明显变形,最大裂缝达3cm 且有进一步扩大 采用桩支护,其中相当部分完全采用了土钉支护,工期趋势,将超出设计变形临界值.基坑坑壁外侧上部有 明显缩短,工程造价显著降低. 两条天然气管线,引起了建设管理部门的高度重视. 兰州地区基坑开挖范围内地层自上而下:①杂填2抢险方案设计 土、黄土状粉土层.杂填土,一般松散,常...
施工技术 2010年5月 96 CONSTRUCTION TECHNOLOGY 第39卷第5期 兰州大学榆中校区游泳馆吸音墙施工技术 苏海明,温纯厚 (甘肃省建设投资(控股)集团总公司,甘肃兰州730030) [摘要]轻质混凝土吸音块主要采用工业废料制成,是无毒、环保、节能的新材料,具有施工成本低、使用寿命长等 优点.兰州大学榆中校区游泳馆室内四周采用轻质混桑土吸音清水墙,由镀锌钢丝网片、形镀锋固定铁件和钢筋 混凝土构件连接.介绍了轻质混凝土吸音墙材料性能要求及砌筑工艺.通过此项技术实施,解决了传统吸音墙裂 缝、黏结性差等问题. [关键词]吸音墙;混凝土吸音块;砌筑;施工技术 [中图分类号]TU754.1 [文献标识码]A[文章编号]1002-8498(2010)05-0096-03 Construction Technology of Sound-absorbing Wall in Swimming Pool of Lanzhou University Yuzhong Campus Su Haiming Wen Chunhou Gansu Provincial Construction Investment Holdings)Group Corporation Lanzhou Gansu 730030 China) Abstract:Lightweight concrete sound-absorbing block is mainly made of industrial waste.Thus it is new material with advantages of non-toxicity environmental protection energy-gaving low cost and long service life.The swimming pool of Lanzhou University Yuzhong Campus adopts fair-faced internal wall with lightweight concrete sound-absorbing blocks.The sound-absorbing block is connected to reinforced concrete ponents with galvanized reinforcement mesh and L-shaped fixed iron.Authors introduce materials performance and masonry technology of lightweight concrete sound-absorbing wall.By adopting the technology the problems of cracks and weak connection of traditional sound-absorbing wall are solved successfully. Key words:sound-absorbing wall;concrete sound-absorbing block;masonry:construction technology 1工程概况 可以起到保温作用,当外墙结露或内墙有冷凝水时可 兰州大学榆中校区游泳馆建筑面积12016m2 建以顺着空腔排出墙外. 筑高度27.9m.观众席位1604个,设有竞赛游泳池、练 3)吸音墙造价比传统吸音材料和复合吸音墙低 习池...