施工技术 2013年11月上 70 CONSTRUCTION TECHNOLOGY 第42卷第21期 D01:10.7672/sgjs2013210070 门形抗滑桩结合高压旋喷止水帷幕支护 在临江深基坑中的应用* 袁尚锋,吴曙光2,詹重伟,郭福元,邱伟 (1.中建三局第一建设工程有限责任公司,重庆400010; 2.重庆大学土木工程学院,重庆400045) [摘要]结合重庆力帆中心临江深基坑工程,介绍了门形抗滑桩结合高压旋喷止水帷幕支护技术的应用.利用有 限元分析及结合现场实际监测,得出了门形抗滑桩支护在临江软土基坑中可以较好控制基坑侧向变形,门形抗滑 桩结合高压旋喷止水帷幕能很好屏蔽江水的渗透,确保了周边构筑物的安全及基坑内施工的安全.严格控制关键 工序,对确保施工质量至关重要. [关键词]基坑;支护;门形抗滑桩;止水帷幕;监测 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2013)21-0070-03 Application of Portal Structure Anti-slide Pile Combined with High-pressure Jet Grouting Waterproof Curtain Supports of in River-side Deep Foundation Excavation Yuan Shangfeng' Wu Shuguang? Zhan Chongwei' Guo Fuyuan' Qiu Wei' (1.The First Construction Engineering Limited of China Construction Third Engineering Bureau Chongging 400010 China; 2.The College of Civil Engineering of Chongging University Chongging 400045 China) Abstract:Based on the river-side deep foundation excavation of Chongqing Lifan Center this paper introduces the application of portal structure anti-slide pile bined with high-pressure jet grouting waterproof curtain supports.Using finite element analysis and field monitoring it is concluded that the portal structure anti-slide pile can control the lateral deformation of soft foundation excavation effectively and the portal structure anti-slide pile bined with high-pressure jet grouting waterproof curtain supports can stop the penetration of river water well and ensure the safety of the surrounding structures and the safety of cons...
[关键词】钢结构;门式网架;无支架施工;施工技术 [中图分类号]TU765 [文献标识码]A [文章编号〕1002-8498(2016)17-0134-03 ConstructionTechnologyWithout Supports for Gantry Grid Xu Guoyin,Liu Yinsheng,Yong Xin,Liang Yi (Zhejang Guosheng Steel Structure Co.,Lid.,Hangzhou,Zhejiang 311243,China) Abstract:Based on dry coal shed grid engineering of Ulan Bator Amugulang Heating Station project in Mongoliaaccordingto the characteristicsand difficultiesof the drycoal shedgrid engineering,this paper introduces construction technology without supports for gantry grid,taking appropriate measures.The application of the technology not only bring about certain economic benefits, but also makes new breakthrough of the technical innovation of installation for the dry coal shed grid. Key words;steel structures;gantry grid;construction without supports;construction 1工程概况 蒙古国乌兰巴托阿木古郎供热站项目干煤棚网 架工程采用门式全平板网架结构,螺栓球节点形式, 正放四角锥体系。
[关键词]加固;古建筑;移位;托换;顶升 [中图分类号】TU746.4[文献标识码】A [文章编号]1002-8498(2012)21-0085-05 Design and Construction of Integral Combinational Shift of Jinlun Hall Li Guoxiong (Guangzhou Luban Construction Group,Guangzhou, Guangdong 501665,China) Abstract;Because of city building needs, the Jinlun Hall must be integrally shifted. The integral shift scheme of translation bining with lifting is adopted by scheme selection. Combined with engineering practice,the author introduces the shift principle,key technologies, strengthening measurements,design and construction technology. Afer shifting, the corrective and connection measures are proposed by monitoring, the quality and safety of project are ensured, and the Key words: strengthening; ancient buildings; shift; underpinning; lifting 1工程概况 会馆平移前先施工托换结构及轨道结构体系, 锦纶会馆建于清雍正元年(1723年),占地面积托换结构体系作为建筑物的底盘,托换梁及轨道梁 668m²,单层青砖空斗墙砖木结构,青砖墙下叠放.之间设置滚轴。
[关键词]地基;软土;机场;强夯;冲击碾压;密实度 [中图分类号]TU753[文献标识码]A[文章编号〕1002-8498(2013)19-0088-04 TestStudyonSoftSoilFoundationImprovementof JinzhouAirportFlightArea Liu Tianfu (Liaoning Branch of China National Geological Exploration Center of Building Material Industry,Shenyang,Liaoning 110004,China) Abstract: The ground improvement engineering of Jinzhou Airport flight area has high demand about foundation bearing capacity and settlement.According to the prevalence of soft soil layer in the field, the dynamic paction and impact rolling test were taken.The testing results show that the two kinds of foundation treatment methods can effectively'improve the soft foundation intensity and control the uneven settlement of foundation, and provide technical parameters and the scientific basis for a wide range of foundation treatment. Key words;foundations; soft soil; airports; dynamic paction; impact rolling; pactness
1工程概况表1各土层物理力学指标 新建锦州机场拟建场址位于锦州市凌海建业Table 1 Physical and mechanical parameters of soils 乡何屯村南侧、小凌河东岸,拟建场区原为锦州市土层密度/天然天然内摩黏聚力压缩模量 何屯盐场所在地,地貌单元属滨海平原,地形平坦,名称(gcm)含水量孔醇擦角c/kPa Ea.1-0.2/ 地基处理前孔口高程1.670~1.910m,高差0.24m。
施工技术 2013年3月上 44 CONSTRUCTION TECHNOLOGY 第42卷第5期 D0I:10.7672/8gs2013050044 锦屏高陡边坡脚手架安全管理控制技术 曾思凯,王勇,陈鹏飞 (中国永利水电第七工程局成都水电建设工程有限公司,四川成都611130) [摘要]高陡边坡、高危危岩体处理支护工程中脚手架是边坡支护施工的重要环节,脚手架搭设质量及施工安全管 理直接影响脚手架的安全运行,进而影响工程施工的安全、进度和成本.锦屏一级水电站高陡边坡脚手架在搭设 施工中的安全管理控制程序及专利加固技术的应用,为脚手架搭设及施工安全管理控制提供了有效手段,保证了 脚手架搭设施工过程的安全受控. [关键调]脚手架;水电站;高陡边坡;安全管理 [中图分类号]TU714 [文献标识码]A [文章编号]1002-8498(2013)05-0044-04 Safety Management and Control for Scaffolds on High and Steep Slopes in Jinping Zeng Sikai Wang Yong Chen Pengfei Chengdu Sinohydro Construction Engineering Co.Led.Sinohydro Bureau 7 Co.Lad.Chengdu Sichuan 611130 China) Abstract:Scaffolds are very important in support construction for high and steep slopes and dangerous rock bodies.The installation quality and construction safety management have direct influences on the safe operation and as a result influence the construction safety construction progress and cost. Application of construction safety management control procedure and patented strengthening technology in the scaffold installation for the high and steep slopes of Jinping first stage hydropower station provided effective measures for the safe construction and safety management of scaffolds and ensured the construction safety during scaffold installation. Key words:scaffolds;hydropower stations;high and steep slopes;safety management 1工程概况 2脚手架工程安全管理控制程序 锦屏一级水电站位于四川省凉山彝族自治州 为保证锦屏水电站脚手架工程实施过程安全 木里县和盐源县交界处的雅砻江大河湾干流河段,受控,制定了一套较为完善的管理程序,如图1 本工程中的双曲拱坝高305m 为当今世界第一高拱所示. 坝,电站装机6台,单机容量600MW.大坝左岸...
[关键词]水电站;拱坝;断层;复合灌浆;施工工艺 [中图分类号】TV543 [文献标识码】A [文章编号]1002-8498(2013)11-0057-03 Cement-chemistry Compound GroutingConstruction Technologyfor thefiunsFaultinJinping Luo Fei, Li Xiang (Chengdu Sinohydro Construction Engineering Co.,Lad.,Sinohydro Bureau 7Co.,Ld., Chengdu,Sichuan 611130,China) Abstract : The Jinping double-curvature arch dam is the highest arch dam in the world and it imposes very high requirements to the dam foundation.The ficis fault in the dam foundation needed to be treated by cement-chemistry pound grouting. This paper introduces the cement-chemistry pound grouting construction process for the f fault of Jinping double curvature arch dam,analyzes the grouting quality, discusses the differences between the grouting principles for chemistry grouting and cement grouting. Key words:hydroelectric power stations; arch dams; faults; pound grouting; construction 将水泥灌浆与化学灌浆合理地结合起来,充分发上。
2015年4月上 施工技术 第44卷第7期 CONSTRUCTION TECHNOLOGY 93 D0I:10.7672/5j52015070093 锚锭板对旋喷搅拌加劲桩支护刚度的 影响分析与计算 刘全林 (上海强劲地基工程股份有限公司,上海200233) [摘要]通过旋喷搅拌施工技术形成大直径的斜向水泥土桩体并设置由钢绞线和错锭板组成的锚固件,对铺固件 施加预应力,实现对软土边坡和基坑的支护.根据江苏靖江、浙江温州地区淤泥地层中旋喷搅拌加劲桩的静载检 测结果,验证了在加劲桩中设置错锭板及多块错锭板对提高其支护刚度的作用,分析了其对支护刚度的贡献.试 验结果表明,合理地设置错锭板可以有效提高加劲桩的极限承载力,降低其变形量.采用荷载传递原理对旋喷搅 拌加劲桩的受力变形特征进行理论分析,得到了旋喷搅拌加劲桩的支护刚度计算方法,与实测数据较为吻合. [关键词]基坑;支护;桩:加劲桩;锚锭板;刚度 [中图分类号]TU47[文献标识码]A [文章编号]1002-8498(2015)07-0093-06 Research and Calculation of the Effect of Series Connected Anchor Plates on the Uplift Stiffness of Jet Mixing Anchor Pile Liu Quanlin Shanghai Strong Foundation Engineering Co.Lad.Shanghai 200233 China) Abstract:The series anchor plates set inside the anchorage section can effectively reduce the contact stress and make the steel strand and the cement soil work as an entirety.The relative slip can be controlled by this special structure as well as the displacement of the anchor pile.The function of the anchor plates is verified by uplift tests in Jiangsu and Zhejiang province and the design is optimized by a series of parameter analysis with the finite element method.The test and finite element analysis show that a reasonable design of the series anchor plates can obviously raise the ultimate bearing capacity and reduce the deformation of the jet mixing anchor pile.Finally a theoretical calculation method for the load-displacement relationship of the jet mixing anchor pile is proposed based on the load-transfer theory. The calcul...
施工技术 2010年1月 90 CONSTRUCTION TECHNOLOGY 第39卷第1期 锚管复合土钉支护技术在砂卵石 地层深大基坑中的应用 王贵和,吕建国,贾苍琴,汪勉涛 (中国地质大学工程技术学院,北京100083) [摘要]北京国美商都属深大基坑支护工程.考虑到场地四周空阔,基坑土层以砂卵石地层为主,密实度高,具有 放坡条件,总体采用错管复合土钉墙支护.介绍支护结构组成,结构及施工工艺.通过现场试验,对基坑的水平位 移以及错管(土钉)的受力特性进行分析.结果表明基坑的水平位移很小,满足设计需求;土钉受力随施工进度逐 渐增大,尤其是退台的设置会引起退台效应,从而起到减荷和使应力重分布的作用. [关键词]基坑;砂卵石地层;支护;错管;复合土钉 [中田分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2010)01-0090-04 Application of Anchor Pipe Composite Soil Nailing Support Technology in Deep and Large Foundation Excavation in Sand-gravel Stratum Wang Guihe L Jianguo Jia Cangqin Wang Miantao School of Engineering and Technology China University of Geosciences Beijing 100083 China) Abstract:Beijing Gome Shopping City belongs to deep and large foundation excavation engineering. Considering conditions of the project such as wide surrounding building and dense sand-gravel stratum anchor pipe posite soil nailing is adopted as support structure.Composition structure and construction technology of the support structure are introduced.Field investigation of horizontal deformation for foundation excavation and force characteristics for soil nailing are done.The result indicates that the horizontal deformation is small which can meet design requirement;the tensile force of soil nailing grows with the construction process especially at the backslide which causes backslide effect and changing of stress distribution. Key words:foundation excavation;sand and gravel layer;support;anchor pipe;posite soil nailing 在基坑支护工...
2016年4月上 施工技术 第45卷第7期 CONSTRUCTION TECHNOLOGY 37 D0I:10.7672/8js2016070037 锚杆静压桩不卸载情况下桩孔内锚固封桩技术探索 李小玥,翁功伟 (中天建设集团有限公司,浙江杭州310020) [摘要]针对传统错杆静压桩封桩的不足之处,采用不卸载孔内错固封桩技术,即在桩顶施加荷载情况下封桩,待 封桩混凝土达到一定强度后撤去施加荷载,此时桩与基础能够立即发挥作用,从而有效减少建筑物附加沉降.通 过多个工程实践证明,改进的施工工艺能有效减少回弹效应及建筑物附加沉降,封桩后质量可靠. [关键词]桩;错杆静压桩;不卸载封桩:错固;施工工艺 [中图分类号]TU745.3 [文献标识码]A [文章编号]1002-8498(2016)07-0037-03 Exploration on the Technology of Sealing Pile Without Unloading in the Pile Hole of Anchor Jacked Pile Li Xiaoyue Weng Gongwei Zhongtian Construction Group Co.Lid.Hangzhou Zhejiang 310020 China) Abstract:According to the shortage of tradition sealing pile of anchor jacked pile the technology of sealing pile without unloading was adopted.Applied load seal at the top of the pile removed the applied load when the sealed concrete reached the intensity.Then the pile and foundation can play their roles immediately so as to effectively reduce building additional settlement.Through many engineering practiees the improved construction technology ean effectively reduce the rebound effect and the additional settlement of buildings the quality of the pile is reliable. Key words:piles;anchor jacked pile;sealing pile without unloading;anchor;construction 0引言 通过锚固架错固在桩孔内的改进工艺.改进的不 锚杆静压桩因其施工方便且能很快提供较高 卸载孔内铺固封桩工艺在宁波经过多个工程实践, 的承载力被广泛应用于建筑物地基加固、纠偏与基工艺施工可靠性强,取得了良好的经济效益和工程 础托换等工程中.由于施工经验的缺乏及施工单 效果. 位片面追求工期利益等因素的影响,一般在压桩结 1卸载封桩对建筑物沉降的影响 束后会卸下千斤顶、移除桩架,以便施工其余桩. 锚杆静压桩处理地基后建筑物常产生较大沉 然而,在错杆静压桩卸载的情况下封桩,桩体的回 降,与压桩卸载后桩的回弹、桩在封桩后未及时发 弹效应很容易导致建筑物产生附加沉降. 挥作用...
施工技术 2014年6月下 20 CONSTRUCTION TECHNOLOGY 第43卷第12期 D01:10.7672/sgjs2014120020 锚杆无损检测技术在洪屏抽水蓄能电站 地下厂房中的应用 杨涛,朱贤博 (武警水电第二总队,江西南昌330096) [摘要]基于江西洪屏抽水蓄能电站地下厂房工程的施工,根据地下洞室支护的要求和特点,对错杆的施工质量进 行无损检测试验研究,并对检测技术进行探讨.结果表明,无损检测技术丰富了隧洞围岩错杆质量检测手段,在地 下洞室工程建设中具有良好的应用前景. [关键词]地下厂房:锚杆;无损检测;应用 [中图分类号]TV554 [文献标识码]A [文章编号]1002-8498(2014)12-0020-04 Application of Anchor Nondestructive Testing Technology in Underground Powerhouse of Hongping Pumped-storage Power Station Yang Tao Zhu Xianbo No.2 Hydropocer Force of Armed Police Nanchang Jiangxi 330096 China) Abstract:Based on the construction of underground powerhouse of Jiangxi Hongping Pumped-storage Power Station Project according to the requirements and characteristics of underground tunnel support the experimental research of nondestructive testing are launched and the detection technology are discussed in this paper.The results show that the nondestructive testing technology enriches the tunnel surrounding rock bolt quality detection means.It has a good application prospect in the underground project construction. Key words:underground powerhouse;anchors;nondestructive testing;application 1工程概况 地下水丰富和施工强度高等特点,给施工支护带来 江西洪屏抽水蓄能电站装机容量为1200MW 一定难度.设计了各种规格的错杆共11.36万余 枢纽主要包括上水库、输水系统、地下厂房系统、地根,锚杆类型主要有:①全长黏结型砂浆锚杆直 面开关站及下水库等.地下厂房系统主要由主、副 径为16~36mm 长度L=2~12m:②水泥药卷错杆 厂房洞、进厂交通洞、母线洞、主变洞、主变运输洞、 直径为25mm 长6m;③中空注浆铺杆直径为 500kV出线洞、通风兼安全洞及各层排水廊道等洞32mm 长8m;④预应力中空注浆错杆直径为 室群组成.其中主、副厂房洞开挖尺寸为161m× 32mm 长9m;⑤自进式错杆直径为25mm 长 22mx51.1m(长x宽×高),主变洞开挖尺寸为 4.5~6m;⑥自进式中空注浆铺杆直径...
施工技术 2010年7月 102 CONSTRUCTION TECHNOLOGY 第39卷第7期 锚杆与锚索梁组合在开挖边坡加固中的应用 王迎法1,冯庆高2,周传波2,蔡鹏3 (1.中国地质大学岩土钻与防护教育部工程研究中心,湖北武汉430074;2.中国地质大学(武汉) 工程学院,湖北武汉430074;3.深圳市湛联基础建筑工程有展公司,广末深圳518052) [摘要]通过对边坡地质条件及其稳定性的分析,提出了采用铺杆与预应力锚索腰梁组合进行边坡加固的措施. 根据锚杆与预应力索腰梁组合结构在边坡支护中的应用情况,以及支护设计、施工工艺及其支护后的边坡稳定 性验算,证明了它是一种安全有效的边坡支护方法. [关键词]锚杆;预应力锚索;腰梁;边坡支护;稳定 [中图分类号]TU753.8 [文献标识码]A [文章编号]1002-8498(2010)07-0102-03 Application of Bolt and Cable-beam in Excavation Slope Reinforcement Wang Yingfa' Feng Qinggao2 Zhou Chuanbo2 Cai Peng' (1.Engineering Research Center of Rock-Soil Excapation and Protection Ministry of Education China University of Geosciences Wuhan Hubei 430074 China:2.Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China; 3.Shenshen Zhanlian Base Architecture Engineering Co.Ltd.Shenzhen Guangdong 518052 China) Abstract:Through analyzing geological conditions and stability of slope a bination slope reinforcement measure of anchor and prestressed anchor cable is put forward.Basing on practice application of this measure in slope support support design construction technology and stability calculation of slope after supported the authors find that this measure is a safety and effective slope support method. Key words:anchor;prestressed anchor cable;waist beam;slope support;stability 对于地质条件差而安全等级要求较高的开挖边15.5m 边坡安全等级为一级.被开挖部分山体的水平 坡,单纯使用错杆喷错进行支护可能无法满足工程要距离为150.0m 垂直高度为15.5m 按1:0.4分两次放 求,这时,可以采用错杆与预应力锚索梁组合进行支坡,放坡高度分别为8m和7.5m. 护,提高边坡的整体稳定性.预应力锚索腰梁是近年 由于山体开挖后的边坡稳定性将直接影响建筑物...
2014年3月上 施工技术 第43卷第5期 CONSTRUCTION TECHNOLOGY D0I:10.7672/5j52014050001 铝酸盐水泥掺量对早强聚丙烯纤维砂浆性能影响研究* 孙长征1 2,刘欢1,赵同峰.3 (1.沈阳建筑大学土木工程学院,辽宁沈阳110168;2.沈阳建筑大学建筑设计研究院,辽宁沈阳110015; 3.辽宁省交通高等专科学校道路与桥梁工程系,辽宁沈阳110122) [摘要]通过向4种不同砂率的水泥砂浆中分别掺入3种不同百分比的铝酸盐水泥进行对比分析试验,找出最佳 铝酸盐水泥掺量.在此基础上,为了进一步改善砂浆的力学性能,通过向早强砂浆中掺入6种不同体积掺量的聚 丙烯纤维,进行对比分析试验,提出聚丙烯纤维的最佳掺量.结果表明:当铝酸盐水泥掺量为5%时,聚丙烯纤维体 积掺量在0.2%-0.4%时.基体3d抗折、抗压强度可分别达到12.1MPa和57.3MPa.且强度后期不倒缩.28d抗压 强度可达到91.7MPa.该体系的SEM微观图貌显示,水泥水化充分,结构致密无裂纹. [关键词]砂浆;早强;砂率;聚丙烯纤维 [中图分类号]TU528.53;TQ177.6 [文献标识码]A [文章编号]1002-8498(2014)05-0001-04 Study on the Effect of Aluminate Cement Content on Polypropylene Fiber Mortar with Early Strength Sun Changzheng2 Liu Huan' Zhao Tongfeng. (1.School of Ciil Engineering Shenyang Jianzhu Unirersity Shenyang Liaoning 110168 China; 2.Architectural Design Research Institute Shenyang Jianzhu University Shenyang Liaoning 110015 China; 3.Department of Road and Bridge Liaoning Provincial College of Communications Shenyang Liaoning 110122 China) Abstract:Through the parative analysis of the test in which three kinds of different percentage of aluminate cement is added to four different sand ratio of cement mortar to find out the best content of aluminate cement.On the basis in order to further improve the mechanical properties of mortar through the parative analysis of the test in which six kinds of volume content of polypropylene fiber is added to the early strength cement mortar to find out the best content of polypropylene fiber.The results ...
2015年9月下 施工技术 第44卷第18期 CONSTRUCTION TECHNOLOGY 127 D0I:10.7672/5j52015180127 铝合金活动房基座深化设计及施工组织研究* 蒋博雅,张宏 (东南大学建筑学院,江苏南京210096) [摘要]装配式多功能铝合金活动房具备了典型的工业化特点,即工厂化、模数化、标准化.以建筑面积为44m2的 太阳能铝合金活动房的基座装配作为研究对象,从深化设计概念引入,展开讨论了基座深化设计过程、基座最终方 案、材料订单、辅助工具订单、施工组织工序、进度控制、人员任务安排几方面的内容. [关键词]安装工程;装配式;深化设计;铝合金活动房;基座;施工组织 [中图分类号]TU7 [文献标识码]A[文章编号]1002-8498(2015)18-0127-03 Deepening Design and Construction Organization Research of Framework Base of Aluminum Alloy Structure Activity Room Jiang Boya Zhang Hong (Architecture School of Southeast Unirersity Nanjing Jiangsu 210096 China) Abstract:The modular multi-function aluminum alloy structure activity room has the typical characteristics of industrialization which is industrial modulated standardized.44 square meters of solar aluminum trailer is used as the researched object.From the deepen design concept the paper discusses the design process of framework base the final plan material order auxiliary tool order construction process time control and personnel task arrangement. Key words:installation prefabricated;deepened design;alloy structure activity room;framework base; construction organization 在装配式多功能铝合金活动房的设计研究中,座点.基座框架是由标准的80mm×80mm铝型材, 轻型工业化建筑产品集成整体家具橱柜、太阳能光型号为APS-8-8080工厂装配而成,并配有 电光热系统,实现了自保障零能耗.多功能铝合金80mmx80mm强力角件、T形螺栓等标准构配件. 活动房的建筑面积是44m2.整个建筑产品包含了3 为使基座稳固,构配件统一规格,基座材料轻便,易 大模块,即太阳能模块、主体模块、基座模块,其中 于固定和运输装配,特对其深化设计,经反复推敲, 主体单元模块拥有独立结构体,独立围护体和独立 确定基座最终方案. 空间体3大独立体,可以单独在工厂生产,现场组 以下按照工业化建筑产品的三大设计特点:模 装.而铝合金活动房体积小、轻便的特点决定了它 块化、标准化、装配化,对装配式多功...
2015年9月上 施工技术 第44卷第17期 CONSTRUCTION TECHNOLOGY 67 D0I:10.7672/sgjs2015170067 铝合金模板早拆时间确定方法研究* 罗启灵1,王卫仑,刘洪海2,胡大伟2 (1.深圳大学广东省滨海土木工程耐久性重点实验室/深圳市土木工程耐久性重点实验室,广东深圳518060; 2 中建三局第一建设工程有限责任公司,湖北武汉430040) [摘要]采用简化权重成熟度法和等效龄期成熟度法对北京浦项中心项目的C40泵送混凝土的抗压强度进行预 测,从而确定铝合金模板早拆时间,与实测的同条件养护试块抗压强度做对比,简化权重成熟度法(预测值/实测 值)的均值为1.00,变异系数为8.2%,简化成熟度法比等效龄期成熟度法预测准确性高,适用的预测强度范围更 大,适合铝合金模板早拆时间的确定. [关键词]模板;铝合金模板;混凝土强度;拆模时间 [中图分类号]TU755 [文献标识码]A [文章编号]1002-8498(2015)17-0067-03 Study on the Method for Determining Removal Early Time of Aluminum Alloy Formwork Luo Qiling' Wang Weilun' Liu Honghai Hu Dawei? (1.Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering/Shenzhen Durability Center for Civil Engineering Shenzhen University Shenzhen Guangdong 518060 China;2.The First Construction Engineering Limited Company of China Construction Third Engineering Bureau Co.Ld.Wuhan Hubei 430040 China) Abstract:The pressive strength of the C40 pumping concrete in Beijing Pohang Center Project is predicted by the simplified weighted maturity method and the equivalent age maturity method under the same condition curing.The results show that the simplified weight maturity method can high accurately predict the pressive strength which the mean of predicted value)/(measured strength)is 1.00 and the C.V is 8.2% the simplified weighted maturity method is suitable greater intensity range of prediction strength and is suitable for determining removal early time of aluminum alloy formwork. Key words:formwork aluminum alloy formwork concrete strength;formwork removal time 0引言 只是根据相关经验制定了铝合金模板拆模的时间 铝合金模板系统在国外已得到广泛应用.近计划.当然,现场可采用留置同条件养护的试块, 几年来,国内才逐步开始使用.铝合金模板系统的在适当的龄期进行抗压强度试验,按照GB50204一 重要特点是工厂化施工,将墙模、顶模和支撑等几 2002(2011年版)做出拆模时间的判断,但是非常繁 大独立系统有机地融为一体,一次将模板全部拼装 琐,所以有必要采用更加简便的方法来确定拆模 完,实现一次浇筑;采用V形支撑模板支撑柱头,实 时间. 现早拆模板,不拆支撑,可提高施工效率、降低 简化权重成熟度法和等效龄期成熟度法只需 成本21. 要记录混凝土的温度就可简便地实时预测混凝土 根据《混凝土结构工程施工质量验收规范》 的早期强度从而确定拆模时间.本文结合北京浦 GB50204--2002(2011年版)要求,底模拆除时各构 项中心项目对早拆时间的确定方法进行研究. 件混凝土强度必须达到设计强度的规定百分率的 1试...
施工技术 2016年11月下 56 CONSTRUCTION TECHNOLOGY 第45卷第22期 D0I:10.7672/sgjs2016220056 铝合金模板在预制装配式结构施工中的应用 刘玉涛,李小玥,吴坚荣 (中天建设集团有限公司,浙江杭州310020) [摘要]以中天之江诚品项目为例,介绍了预制装配式结构施工中预制墙板、楼梯、叠合板的吊装及后浇部位的施 工等关键施工技术,创新性地在后浇连接部位使用铝合金模板,提高了后浇部位的施工质量,且符合绿色施工理 念,工业化效率高.铝合金模板与预制装配式结构的完美结合,提高劳动生产率,加快建设速度,降低工程成本,提 高工程质量,符合建筑工业化的发展方向. [关键词]预制装配式;铝合金模板;叠合板;吊装;施工;应用 [中图分类号]TU756 [文献标识码]A [文章编号]1002-8498(2016)22-0056-03 Application of Aluminum Formwork in Prefabricated Construction Liu Yutao Li Xiaoyue Wu Jianrong ZhongTian Construction Group Co.Ld.Hangzhou Zhejiang 310020 China) Abstract:Based on a case study of Zhongtian Zhijiang Eslite this paper introduces many key construction techniques applied in hoisting of PC walls and slabs stairs laminated slabs and construction of post-pouring parts of prefabricated construction.Aluminum formwork has been creatively employed in post-pouring connective parts successfully improving relevant construction quality and conforming to green construction concept with great high industrial efficiency.The bination of aluminum formwork and prefabricated structure raises labor productivity enhances the speed of construction lowers the projeet cost improves projeet quality therefore meets the direction of architeeture industrialization. Key words:precast;aluminum formwork;laminated slab;hoists;construction;application 0前言 其中13-2号楼为公共租赁房,地下1层,地上17 在过去的十几年,我国建筑业经历了快速发展 层,建筑面积13553.4m2.地下部分及首层采用现 期,创造了大量的产值,但存在着生产效率低、质量 浇结构形式,2层以上采用预制装配式.预制装配 问题较多、作业条件差、资源消耗多、建筑垃圾产生 结构范围包括剪力墙、...
[关键词]地下管廊;铝合金模板;单侧大模板;检查;验收;施工 [中图分类号]TV554*.9[文献标识码]A[文章编号]1002-8498(2017)08-0127-03 ApplicationofAluminumAlloyFormworkDuringConstructionof Cast in Underground General Pipe Gallery WU Tongchang,LI Changze,HE Zhenhua (China Construction Eighth Engineering Bureau Co.,Ltd.,Shanghai 200135,China) Abstract: With the example of an underground pipe gallery in Guangdong Province, the application of aluminum alloy formwork in the cast in underground pipe gallery is introduced. The aluminum ally formwork for advantages, the innovation of cancelling the split bolt of pipe gallery wall sealing, construction process and quality inspection and acceptance of the aluminum alloy formwork are elaborated. Key words:underground pipe gallery; aluminum alloy formwork; single side formwork; inspection; acceptance; construction 1工程概况表1综合管廊标准断面 广东省某地下综合管廊工程,综合管廊全长Table 1 Standard section of general pipe gallery 41km。
[关键词】模板;铝合金模板;施工技术;经济效益 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2012)23-0079-04 ConstructionTechnologyofAluminumAlloyFormworkSystem andItsBenefitAnalysis Liu Xuehong,Cheng Haiyin,Lu Jianfei,Xia Weiqiang (Zhongtian Construction Group Co.,Ltd.,Hangzhou,Zhejiang 320000,China) Abstract:Aluminum alloy is a new kind of formwork system. Based on its application on two projects in Guangdong and Wuhan,its application characteristics,technology principle,points for attention, operation key points and economic benefits are analyzed and pared with other formwork.The engineering practice shows that the aluminum alloy formwork system can save energy and protect environment,improve civilized construction, speed up construction process,improve engineering quality and save cost. With the technology, good economic and social benefits can be gained. Key words;formwork; aluminum alloy formwork; construction; economic benefit 铝合金模板体系是一种新型建筑模板体系,在模板体系在武汉复地东湖国际和广东文冲万科两 国际上已经使用多年,特别是在美国,已经具有几个项目的应用情况,对铝合金模板体系的应用特 十年的使用历史。
2016年1月下 施工技术 第45卷第2期 CONSTRUCTION TECHNOLOGY 93 D0I:10.7672/8gjs2016020093 铝合金早拆模板在某工程中的应用* 牛潮,黎文方,薛刚2,王红媛2,徐巍2,张鹏2 (1.广东奇正模架科技有限公司,广东阳江529500;2.中国建筑一局(集团)有限公司,北京100070) [摘要]某项目工程核心简采用外爬内支施工技术,即核心筒竖向结构外墙采用液压爬升模板,核心筒竖向结构内 墙、水平结构采用铝合金模板体系整体同步施工.应用结果表明,采用铝合金模板的混凝土构件尺寸准确,表观效 果优良,施工进度满足了液压爬模和钢结构施工的流水节拍,加快了工程进度并节约了工程成本.笔者根据该工 程的特点系统介绍外爬内支施工技术及施工中应该注意的相关事项. [关键词]高层建筑;核心筒;液压爬模;铝合金模板;施工技术 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2016)02-0093-05 Application of Aluminum Alloy Early Dismantling Formwork in a Project Niu Chao' Li Wenfang' Xue Gang? Wang Hongyuan2 Xu Wei? Zhang Peng? (1.Guangdong Qizheng Formswork Co. Lid.Yangjiang Guangdong 529500 China; 2.China Construction First Building Group)Co.Lad.Beijing 100070 China) Abstract:The core tube of a engineering applies outside climbing and inside supports construction technology namely the vertical outer wall applies hydraulic climbing formwork and the vertical inner wall and horizontal structure applies aluminum alloy formwork for integral synchronous construction.The application results show that the concrete using aluminum alloy formwork has precise size excellent appearance and the construction schedule can meet hydraulic climbing formwork and steel structure construction.According to the engineering characteristics the authors introduce the construction of outside climbing and inside supports and corresponding notes. Key words:tall buildings;core tube;hydraulic climbing formwork;aluminum alloy formwork:construction 0引言 如图1所示,包括地下室4...
2014年7月下 施工技术 第43卷第14期 CONSTRUCTION TECHNOLOGY 171 D0I:10.7672/sgjs2014140171 钢结构连接摩擦面误涂漆处理措施试验研究* 李相勇,吴兆旗2,庄宁2,郑剑智2 (1.浙江东南网架股份有限公司,浙江杭州311209;2.福州大学土木工程学院,福建福州350108) [摘要]对涂有酚醛防锈漆的摩擦型高强螺栓连接摩擦面分别采用香蕉水清洗、喷砂、百叶轮砂纸打磨、砂轮打磨 等方法做表面处理,并进行抗滑系数试验测试.结果表明误涂防锈漆会严重降低连接面的抗滑移系数,无论经过 何种方法进行摩擦面处理,抗滑移系数都不能达到未涂漆的情况.用香蕉水洗、喷砂和砂轮细磨处理摩擦面具有 相对理想的效果,测得处理后的连接的抗滑移系数可达到0.30以上,其中砂轮细磨连接面的抗滑移系数可达 0.377.利用测得摩擦系数进行设计校核,如能满足设计要求,可采取相应处理措施对误涂油漆摩擦面进行处理. [关键词]钢结构;防锈漆;摩擦面;抗滑移系数;高强螺栓;试验研究 [中图分类号]TU39.03 [文献标识码]A [文章编号]1002-8498(2014)14-0171-04 Experimental Investigation for Processing the Mistakenly Painting Steel Junction Surface Li Xiangyong' Wu Zhaoqi? Zhuang Ning2 Zheng Jianzhi2 (1.Zhejiang Southeast Space Frame Co.Lid.Hangzhou Zhejiang 311209 China; 2.College of Ciril Engineering Fuzhou University Fuzhou Fujian 350108 China) Abstract:In this paper the steel junction surface coated with phenolic antirust paint were processed respectively by means of banana oil cleaning grit blasting sandpaper polishing grinding wheel polishing and then were experimentally tested to determine their sliding coefficients.The testing results show that the coating antirust paint will seriously reduce the sliding coefficient and no matter what method is used to process the surface the resistance to slide can not achieve the unvarnished situation. The banana oil cleaning the grit blasting and the grinding wheel polishing finely are the relatively good ways to process the surface coated and the sliding coefficients of the surface pro...