工技术 2017年8月上 14 CONSTRUCTION TECHNOLOGY 第46卷第15期 do:10.7672/sgjs2017150014 外倾式变曲率竹饰面弧墙模板支撑一体化施工技术 刘玉涛,沈映,陆建飞,王洪腾,韩超 (中天建设集团有限公司,浙江杭州310020) 摘要]南宁万科大厦角部外倾变曲率竹饰面弧墙施工,采用新型的模板支撑一体化加固体系,并通过项目实践形 成了一套完整的施工技术。施工中增加弧墙内钢骨,通过焊接在钢骨上的对拉螺杆将施工中的全部荷载传递至钢 骨,并设计了钢筋桁架环箍和衬模+竹片的模板结构,解决了传统支撑体系刚度、强度不足,三维空间自适应差等 问题。模板支撑一体化加固体系结构设计简洁,施工工艺操作简单、快捷。弧墙施工过程弧形墙体测量定位精准, 弧墙截面厚度及钢筋定位控制准确,外立面竹条饰面纹理效果良好。 [关键词]高层建筑模板;支撑变曲率;钢筋桁架环箍;施工技术 [中图分类号TU755.2T731.2 [文献标识码]A 文章编号]1002-8498(2017)15-0014-05 Construction of Integral Construction Scheme for Formwork Support of Curved Bamboo Wall with Outer-incline Bending Curvature LIU Yutao ,SHEN Ying ,LU Jianfei ,WANG Hongteng ,HAN Chao ( ZhongtianConstruction Group Co ..Hangzhou ,Zhejiang 310020 ,China ) Abstract :The curved bamboo wall construction Nanning Vanke Building corner applies a new kind of formwork and support integrated reinforcement system ,and through the project practice to form a plete set of construction technology .In the construction ,the internal steel reinforcement is added in the are wall ,and all the loads in the construction are transmitted to the steel reinforcement by the pull screw welded on the steel reinforcement .And the formwork structure...
粉煤灰综合利用 2017o.3 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 复合改性低品质粉煤灰在混凝土中的应用研究 Research on Application of the Composite Modified Low Quality of Fly Ash in Concrete 周美茹,陈国强,李军锁 (河北建材职业技术学院,秦皇岛066004) 要:针对低品质粉煤灰存在的水化活性低、流动性差等问题,在粉磨改性的基础上采用粉磨+流化床气相沉 积的处理方法,对低品质粉煤灰进行复合改性,在减水剂用量相同时,复合改性粉煤灰表现出明显的减水效果,采用 复合改性的低品质粉煤灰制备的混凝土,工作性得到明显改善,28d龄期强度提高一个强度等级,每立方混凝土可节 约成本56元,对充分利用劣质粉煤灰具有实际指导作用。 关键词:粉煤灰复合改性混凝土 中图分类号:TU528.2文献标识码:A文章编号:1005-8249 Zhou Meiru ,Chen Guoqiang ,Li Junsuo Hebei Construction Meterial Vocational and Technical College ,Hebei Qinhuangdao ,066004 ) Abstract :In view of the problems of fly ash with low quality ,suchas lower hydration activity and poorer liquidity ,anovel method ( grinding+fluidizedbed vapor deposition )was put forward to modify fly ash .The posite modified fly ash can exhibit more effect of water reducing than unmodified fly ash ,on the condition of equal addition of water reducer .The concrete that was made from modified fly ash has dramatically improved the work ability ,and its strength at 28d age increased one strength grade .It can save costs of 5 to 6 yuan per cubie meter of concrete ,it played a practical guiding role to the low-quality fly ash Keyw...
2016年11月上 施工技术 第45卷第21期 CONSTRUCTION TECHNOLOGY do:10.7672/sgjs2016210091 填海区深基坑淤泥层狭小空间坑中坑复合 支护结构施工技术 任亮,李凯,喻小康,王敬,沈明真 (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]针对填海区深基坑淤泥层中的坑中坑支护因受上部环形钢筋混凝土内支撑梁影响,作业空间低矮狭小,无 法全部使用拉森钢板桩支护,最终整个坑中坑支护体系采用复合支护方式,即在无支撑梁影响的部位采用9,12m 长拉森钢板桩+钢管内支撑支护,有内支撑梁影响的区域采用高压旋喷桩+微型桩+混凝土冠梁+钢管内支撑进 行支护。支护体系设计兼顾安全经济、可操作性强的特点。 [关键词]填海区;淤泥层深基坑;坑中坑;支护;施工技术 [中图分类号]TU473.2 文献标识码]A 文章编号]1002-8498(2016)21-0091-03 Pit in Pit Composite Supporting Structure Construction in Narrow Space of Reclamation Silt Layer Deep Foundation Excavation Ren Liang ,Li Kai ,Yu Xiaokang ,Wang Jing ,Shen Mingzhen China Construction Eighth Engineering Dirision Co .,.Guangzhou Branch Guangzhou ,Guangdong 510665 ,China ) Abstract :Because of the influence of inner support beam of upper circle reinforced concrete ,the pit in pit supporting in reclamation silt layer deep foundation excavation has narrow space ,which can not apply Larson steel plate piles .So ,it uses posite support system ,namely ,9m and 12m long Larson steel plate piles steel pipe support is applied without influence of inner support beam ,and high pressure jet grouting pile miniature pile concrete crown beam steel pipe support is use...
施工技术 2017年4月上 132 CONSTRUCTION TECHNOLOGY 第46卷第7期 D0I:10.7672/sgjs2017070132 填塘地区软弱地基连续梁支架现浇施工技术 黄倩,光明2,张东山2 (1.中交路桥建设有限公司总承包分公司,北京100012;2.中交一公局第一工程有限公司,北京102205) [摘要]以合芜二坝互通立交匝道的现浇箱梁施工工程为依托,采用合理借助桥梁墩身承台作为天然基础的钢 管少支架(即钢管柱和贝雷片作为支架),大大提高了填塘区支架的整体稳定性和安全性,保证了箱梁的施工质量 并节省了钢材用量.施工中,钢管立柱直接布置在承台或156四拼工字钢搭接梁上,通过此措施,安全优质地完成 了填塘区软弱地基连续梁的施工. [关键词]桥梁工程;连续梁;软弱地基;填塘区;施工技术 [中图分类号]U445.4 [文献标识码]A [文章编号]1002-8498(2017)07-0132-04 Construction Technology of Supports for Cast-in-place Continuous Beam in Pond Filling Area Soft Ground HUANG Qian' GUANG Ming2 ZHANG Dongshan2 (1.General Contracting Branch of Road Bridge International Co.Lid Beijing 100012 China; 2.No.1 Engineering Co.Ltd.of FHEC of CCCC Beijing 102205 China) Abstract:Based on the cast-in-place box girder construction of Hewu erba munication area C ramp bridge cast-in-situ box girder constructing of reasonable using bridge pier caps with scaffolds with less steel tube namely steel tube column and bailey as a scaffold can greatly improve overall stability and safety of the scaffolds in the pond area it can guarantee the construction quality of box girder and save steel consumption.In the construction steel tube columns are arranged directly on the cap or lap beam which is made of four spell 156-steel.Through this measure the construction of cast-in-place continuous beam in filled pond area soft ground is finished with safety and high quality. Key words:bridges;continuous beams;soft foundation;pond filling area;construction 1工程概况 C匝道桥桥址区位于原鱼塘回填区,区域土层 合芜二坝互通立交是合芜高速公路的重要组的面层为素填土,往下基本为流塑性较强的粉质黏 成部分,二坝互通立交的改建是芜湖市跨江发展土、淤泥,其自稳定性、地基承载力较差. 的必然需求,不仅改善了过江交通绕行的现状,也2施工方案分析及比选 带动了芜湖市的经济发展.合芜高速公路通过二 2.1施工难点 坝互通A B C D E F G H8条匝道分别与地方 1)C匝道桥址区经试验检测,桥下局部承载力 国道顺接,其中CK0561.75桥为C匝道桥,桥梁 为零,大部分区域承载力不足30kPa 如果采用常规 全长317.5m 全桥共4联,跨径组合为4×20m 的落地满堂支架施工,其地基处理工程量较大,换 4×20m(20m17.5m2x20m)4x20m. 填厚度要求较高,相应的地基处理费用巨大. 该桥上部结构采用普通钢筋混凝土连续箱梁,箱 2)若采用直接落地的多跨梁柱式支架,不但基 梁截面为单箱双室的直腹板等高度变截面,桥宽 础处理费用高,而且大型吊运、安装设备进驻场地 10.5m.下部结构采用柱式墩,墩台均采用桩 困难,致使支架相关构件吊运受限. 基础...
36 当代化工研究 技术应用与研究 2016·09 塑料导爆索生产中的安全技术应用 ★刘桢昊 (新疆哈密雪峰三岭民用爆破器材有限责任公司新疆839003) 摘要:导爆索作为起爆工具中极为常用的一种,拥有着极为强大的传导爆炸能力本文结合制造塑科导爆索的不同方式,对其生产制造 优点和不足进行研讨和分析。对塑料导爆索的安全性进行了全方面的剖析,使塑料导爆索的正确应用方式为更多人明确。对塑料导爆索在 安全应用上的正确方式提出了有效的见解,在保障导爆索工作能力和效率的同时,极大提高了其生产和使用中的安全性。 关键词:塑料导爆索;生产;安全技术 中图分类号:T文献标识码:A Safety Technology Application in Plastic Detonating Cord Production Process Liu Zhenhao ( XinjiangHami Snow Mountain Three Ridge Civilian Blasting Equipment Limited Liability Company ,Xinjiang ,839003 ) Abstract :Detonating cord ,as one mon detonating tool ,has very strong ability of conducting and explosion .Based on the different means of manufacturing plastic detonating cord ,this paper takes research and analysis its manufacturing advantages and disadvantages .taking overall analysis of the safety of plastic detonating cord can make it clear of the correct application way of the plastic detonating cord for more people .Besides , put forward effective opinions for the right way of plastic detonating cord in security applications ,which ensures the work ability and efficiency of detonating cord ,meanwhile greatly improves the safety the process of production and us Key words :plastic detonat...
粉煤灰综合利用 2016 NO.6FLYASHCOMPREHENSIVEUTILIZATION 试验与应用
基于粉煤灰的木材阻燃涂料试验研究 Experimental Study on the Wood Fire-retardant Coatings Based on Fly Ash
甘林儒,刘英炎,彭玉婷,方思思,谭小群,廖亚立 (北京理工大学珠海学院化工与材料学院,广东珠海519085) 摘要:在文献《粉煤灰对木材防火涂料的影响》的基础上,通过进一步改变粉煤灰的添加量,对木材防火涂料的烟 密度以及阻燃性能进行测定,来研究粉煤灰对木材防火涂料的阻燃抑烟性能的影响。
关键词:粉煤灰;涂料;阻燃;木材 中图分类号:X773文献标识码:A文章编号:1005-8249(2016)06-0026-03 Gan Linru,Liu Yingyan,Peng Yuting,Fang Sisi,Tan Xiaoqun,Liao Yali (SchlofChmical ngineering andMatrialsSciencejing Institute ofTechology,uangdong,Zhhai590,Chna) Abstract:Based on the literature of the influenee offly ashn the wood fireretardant ctings,by further changing the content f y ash, measuring smoke density and flame retardant propertie of fire retardant coatings, the infuence of fy ash on the wood fireretardant coatings for areykiipr highest tmerature afebstion an mke densityadeanderetardanyan smoke densityadeisnt aliner relatihi ith aout fflrafsgodt keprnfsstlgdredtnkere didn havea diret link.Smoke suppresion effects well and maximum temperature afer bustion is the lowest forfly ash content f 12.0g coatings. Key words:fly ash;coating;flame retardancy; wood 木材在工业工程材料中占据十分重要的地位,其分重要的课题,阻燃的目的是为了减少木材的燃烧动 强重比高和易于加工的特性使民众广泛使用,而木材力和事故发生的可能性,减缓火焰的燃烧,增加救援的 的消耗量也逐年上升。
粉煤灰综合利用 FLYASH COMPREHENSIVEUTILIZATION2013NO.6
专题研究
基于粉煤灰掺量的砂浆塑性收缩开裂本构关系的研究* Research on Influence of Fly Ash Admixture to the Constitutive Equation of Plastic Shrinkage Cracking of Cement Mortar
马一平,郭建平,杨晓杰',李国友²,朱蓓蓉 (1.同济大学先进土木工程材料教育部重点实验室,上海201804; 2.中国建筑股份有限公司技术中心,北京101300) 摘要:研究了粉煤灰掺量对于砂浆塑性收缩性能和塑性粘度的影响。
关键词:粉煤灰;水泥砂浆;塑性收缩开裂;塑性粘度;本构关系 中图分类号:TU432*.1文献标识码:A文章编号:1005-8249(2013)06-0007-03 Ma Yiping’, Guo Jianping',Yang Xiaojie',Li Guoyou²,Zhu Beirong (1. Key Laboratory of Advanced Civil Engineering, Tongji University, Shanghai 201804, China; 2.TechologyCent,ChinStateConstrutionEngineerng CoporationBejing300Chia Ahstracthe infueeofly ashaixue to plastic shkagecacking and plastic viscsityof cet mtris studiedResulshw ht with the inrease of fly shadixtre,both kingesistane index and time for cracking f cment motr inree, and its plastic viscsity d creases. The constitutive relationsbetwee content offy ash and crackingresistance index of cement mortar, content of fly ash and time for cack- ing of cement mrtar, and pastivissity f cement motar with ly ashandits crackingresistane index have een biltrespetively. Key words :fly ash; cement motor; plastic shrinkage cracking; plastic viscosity; constitutive equations 粉煤灰作为砂浆或混凝土的掺合料,替代部分水1试验 泥或细骨料后,不仅能降低砂浆或混凝土的成本,而且 能提高砂浆或混凝土的和易性、不透水性、抗硫酸盐性1.1试验原材料 能和耐化学侵蚀性能,降低水化热,改善混凝土的耐高试验原材料包括:海豹牌42.5普通硅酸盐水泥;细 温性能,减轻颗粒分离和离析现象,抑制杂散电流对混度模数为2.59的黄砂;石洞口电厂的F类ⅡI级粉煤灰。
粉煤灰综合利用 2014 NO.3 FLYASHCOMPREHENSIVEUTILIZATION 试验与应用 基于煤研石综合利用的新型充填材料性能研究* Researchon thePerformance ofNewFilling Material based on the Utilization of Coal Gangue 封鑫,刘娟红,纪洪广 (北京科技大学土木与环境工程学院,北京100083)-0012-04 摘要:采用不同粒径煤研石作充填骨料,研究水泥基充填材料和新型充填材料的流动性和抗压强度,并分析其微 观结构。
关键词:煤研石;新型充填材料;流动性强度 中图分类号:TD8文献标识码:A文章编号:1005-8249(2014)03-0012-04 Liu Juanhong Feng Xin Ji Hongguang University of Science and Technology Bejing Collge of Civil and Environmental Enginering,Beijing 100083,China AbstractThroughdifeent patile f coal gangueas flling agregate,this paer studie the mobilityand copesive strength about cement-based filling materials and new filling materialsand analyzed the microstructure.The results showed the 28d pressive strength of cement-based flling materils can be up to1MPa, while newflling matrials canb u to3.5MPa when themobility can meet te requireents; Comparing witcementbased illing materials, the28d pressve strength of newfilling materials mroved about 1.9MPa and 1.MPawhe th particle is in 1.18~0.075mm and 0.6~0.075mm; The microstructure showed that, aggregate and gel of new filling materals were very close, and the gel is dense,egually distributed. The Ca/Si of CS-H gel of new flling material was greatly redued. Key words Coal gangue;New filing materal;Mobility;Strength 煤研石是我国排放量最大的工业废渣,约占全国的应用和发展。
当代化工研究 绿色化工 201607 基于涂料行业VOC污染控制政策法规研究 王卉 (PPG涂料(天津)有限公司天津300400) 摘要:针对当前日益严峻的环境污染问题,我国加强了对各行各业环境污染的监督和控制力度,并且制定和推行了一系列相关的政策法 规作为坚实的理论依据与法律保障。对于我国工业发展的重要行业之一,涂料行业在不断推动我国生产制造行业向前发展迈进的同时,其 庞大的污染量也一直成为国家的心病,为了有效控制涂料行业中O对环境的污染,我国制定了许多相关政策法规,这也是本文将要具体 论述的主要内容。 关键词:涂料行业:VOC:污染控制:政策;法规 中图分类号:T 文献标识码:A Research on VOC Pollution Control Policies and Laws and Regulations Based on Paint Industry Wang Hui ( PPGPaint ( Tianjin)co .,LTD .Tianjin ,300400 ) :Directing at the current increasingly serious environmental pollution problems ,China has strengthened the supervision and control power for environmental polltion in all walks of life ,and make formulation and implementation of a series of related policies and regulations as the solid theoretical basis and legal protection .As one important industry of our country's industrial development ,at the time of paint industry constantly pushes forward China's manufacturing industry ,its massive pollution has bee the heart disease of the country .order to effectively control the VOC pollution to the environment in paint industries ,our country has established many related policies and regulations ,which also is the main content disc ussed ...