[关键词】岩土工程;土袋;护坡结构;设计 [中图分类号】TU751.5[文献标识码】A[文章编号]1002-8498(2013)13-0068-03 DesignofEarth-bagRevetmentStructureinRiverway Cheng Longfei,He Yunxiang (College of Civil Engineering,Chongqing Three GorgesUniversity,, Chongqing 404000,China) Abstract:In revetment structure design, the force balance under the interactions of flow drag,inertia, buoyancy and effective gravity should be considered firstly.And then, since the earth in the bags is not strictly meet the later restriction,modulus of deformation instead of modulus of pression should be taken to calculate the settlement of earth-bag revetment structure. At last, in practice, the resistance of the bag material against damage from nature or human, the strength decay from long-period ultraviolet rays and fray of silt should also be considered. Key words:geotechnical engineering;earth bags;revetments; design 填充物为砂、碎石、混凝土的土袋结构作为永积减小;当波浪向下回退时,土袋又会受到面向河 久性的工程结构已经广泛运用于堤防工程中。
[关键词】地基;土石混合填方;强夯;动力触探;试验 [中图分类号】TU47【文献标识码】A[文章编号】1002-8498(2015)13-0047-04 Experimental Study ofDynamic Compaction onFoundationFilledwith StoneandSoilMixture YanWenping,WangHongyun (Wuhan Surveying-Geotechnical Research Institute Co.,Lid.ofMCC,Wuhan,Hubei430080,China) Abstract:Experimental study is executed by a series of experiments of dynamic paction in three classes of tamping energy based on the different paction spacing and proportion of soiland stone.Six paction effect is measured by dynamic penetration tests (DPT)and plate loading tests (PLT). The research result shows that the main deformation around the tamper hole is upheaval.Influence of proportion of soil and stone on the deformation around the tamper hole is not obvious.Blow counts of same time, the foundation has a better bearing capacity. Key words:foundations;stone and soil mixture filling;dynamic consolidation;dynamic penetration;tests 0引言等分析了强夯地基土的应力与位移。
2010年4月 施工技术 第39卷第4期 CONSTRUCTION TECHNOLOGY 83 土工膜破坏原因分析及防治措施 郑建华1,许四法2 (1.宁波市建筑工程安全质量监督总站,浙江宁波315010; 2.新江工业大学建筑工程学院,浙江杭州310014) 【摘要]为了防止雨水流人垃圾中形成的海滤液等多种有害物质流人入地下污染地下水以及周围环境,现代垃圾填 埋场都设置了防海系统.防渗系统一般由无纺布、防渗材料以及影润土土工毯等组成,由于在热应力、拉应力以及 穿刺等各种因素的作用下,可能导致防滤系统破坏而使有害物质流人地下.介绍了造成防系统破坏的原因及其 防治措施. [关键词]垃圾填埋场;防渗系统;破坏原因:防治措施 [中图分类号]TU761.11 [文献标识码]A [文章编号]1002-8498(2010)04-0083-02 Destructive Causes Analysis of Geomembrane and Prevention Measures Zheng Jianhua' Xu Sifa? (1.The Chief Supervision Station of Safety and Quality of Construction Engineering Ningbo Zhejiang 315010 China; 2.College of Cioil Engineering and Architecture Zhejiang University of Technology Hangzhou Zhejiang 310014 China) Abstract:The waste landfill should be designed no leachate that may include hazardous materials flowing into surrounding ground and water over long period of years.A seepage system posed of geomembrane geotextile and GCL is installed on the bottom and the side slope of a waste landfill.The seepage system is considered to bear various forces such as tensile force thermal stress and puncture and it would be damaged under the influence of various factors.The main reasons of damage of geomebrane are analyzed and the measures and suggestions on prevention are presented. Key words:waste landfill;seepage system;destructive cause;prevention measure 现代垃圾填埋场设计时都设置了以橡胶、树脂等很大的温度应力.垃圾填埋场的设计填埋年限都在 高分子材料做成的土工膜为主的防渗系统.但是由于15年左右,因此边坡部防渗系统的土工膜在铺设后长 我国垃圾不分类和成分复杂,防渗系统经常遭到破坏时间处于暴露状态,温度随着外界温度变化.另外,生 而渗漏. 垃圾在降解过程中产生较大热...
2010年12月 施工技术 第39卷第12期 CONSTRUCTION TECHNOLOGY 91 土工格室处理高填方新旧路堤施工技术 王家全,周健2,吴辉琴,黄柳云1 (1.广西工学院土木建工程系,广西柳州545006;2.同济大学地下建筑与工程系,上海200092) [滴要]结合山区公路改扩建工程,指出山区高填方新旧路堤容易出现不均匀沉降等问题,根据数值分析结果和现 场实际情况,提出采取土工格室处理方案,重点分析了现场施工控制方法与检测标准,并进行了现场新旧路堤搭接 段深层侧向位移和沉降观测数据分析.结果表明,严格控制现场施工质量,可保证土工格室所在结构层发挥立体 加筋效果,有助于提高新旧路堤的搭接稳定性,降低新旧路堤的不均匀沉降. [关键词]土工格室:新旧路堤:位移:施工技术 [中图分类号]U416.1 [文戴标识码]A[文章编号]1002-8498(2010)12-0091-03 Construction Technology on Geocell Treating High Fill New-old Embankment Wang Jiaquan' Zhou Jian2 Wu Huiqin' Huang Liuyun' (1.Department of Ciil Engineering Guangxi University of Technology Liuzhou Guangxi 545006 China; 2.Department of Geotechnical Engineering Tongji Unisersity Shanghai 200092 China) Abstract:In mountain highway widening projects it is easy to appear differential settlement problem for the mountain high fill new-old embankment.According to the numerical analysis results and field condition the geocell treatment plan is proposed.Then the field construction control method and the examination standard are analyzed in detail.At the same time the in-depth lateral displacement and settlement observation of the field new-old embankment joining sections are analyzed.The results show that the strict controlling field construction quality which may guarantee the geocell structure layers to have a three-dimensional reinforcement effect is helpful to enhance the stability of new-old embankment joining sections and reduce the differential seltlement. Key words:geocell;new-old emb...
[关键词]地基;软土;加筋带;承载力;有限元分析 【中图分类号】TU472.21 [文献标识码]A [文章编号】1002-8498(2014)07-0083-04 ResearchonSandstoneCushionbyReinforcedwithGeotechnical Band and Finite Element Analysis Zhang Tingwang (College ofArchitecture and CivilEngineering,Taiyuan University ofTechnologyTaiyuan,Shanxi030024,China) Abstract:According to the geotechnical reinforcement band performance characteristics, this paper takes sandstone foundation in Shanxi Xinghua College project as an example, and through the foundation bearing capacity test, this paper makes sure the reliability and stability of the whole reinforced sandstone cushion foundation. Through calculating and analyzing the soft soil foundation which is laying in different layers and different laying density reinforced by finite element software PATRAN, this paper ultimately determines the paving pattern of reinforced belt. Key words:foundations;soft soil; reinforced band; bearing capacity;finite element analysis 近年来的实践和研究证明,在软土层不厚的情角洲、湖盆地周围、山润谷地均有分布,由于软土具 基是一种简单经济的处理方法。
[关键词]超深基坑;反向对接;爆破防护;施工技术 [中图分类号】TU753 [文献标识码】A [文章编号】1002-8498(2016)17-0035-05 Reverse Docking ConstructionTechnology ofUltra-deepFoundation Excavation Structures in Soil-rock Stratum Shi Qunkai,Yang Qian,Fan Zuofeng,Wang Qian,Ding Lizhen (China MCC20 Group Co.,Ltd.,Shanghai 201901, China) Abstract;Along with the continuous development of the state construction,geographic conditions of construction areas and their surrounding environmental conditions bee more and more plex. In the few ultra-deep foundation excavation projects constructed in recent years,the circumstances of the construction areas were so plicated that the projects had to be carried out by the bination of excavation and blasting.Besides, the karst fissure development of the rock strata at the lower part of the foundation excavation and the plenty of karst fissure water within the strata lead to rather high requirements for construction safety and environmental protection.This technique takes the swirl pool foundation excavation of Nanjing Steel Wide and Heavy Plate Project as an example and summarizes the technical problems encountered in the project as well as professional development trend of deep foundation excavations in future. Key words;ultra-deep foundation excavation; reverse docking; blasting protection;construction 1工程概况 采用局部深度基坑放坡开挖,即上段挖土卸载放坡 本工程为南钢节能降耗调整产品结构技术改或直立开挖,需要时对坡面进行加固保护,下部基 造项目4700mm轧机工程一标段旋流池工程,旋流坑土体较好时不放坡开挖,故本工程采用了先进行 池位于水处理区域,平流池南侧,结构从上向下依上部松软土放坡开挖、施工结构后,再进行下半部 次由上层顶板、中部1层泵站平台、水池底板及池内爆破开挖后施工结构,最终进行结构对接的方法。
[关键词]隧道工程;土压平衡盾构;固结沉降;数值模拟;应力;变形 [中图分类号】U452 [文献标识码】A [文章编号]1002-8498(2016)17-0109-05 AnalysisofSoilStress-deformationBehaviorCausedbyEarth PressureBalancedShield Zheng Chen', Li Ying',Akagi Hirokazu² (1.College ofMining Technology,Taiyuan University ofTechnology,Taiyuan,Shanxi030024,China; 2.Faculty of Science and Engineering,Waseda University,Tokyo 169-8555,Japan) Abstract:This paper deals with the effects of earth pressure balanced tunneling on the stress path and drainage condition of the soil during tunnel advancement by using PLAXIS. By taking into account the three significant factors of advance rate of the tunnel face,consolidation coefficient of the soil, overburden depth of the tunnel,a parametric study is conducted and a numerical experimental equation proposed for determining drained or undrained soil condition during shield tunnel advancement.Finally, a case study of EPB tunneling is introduced. By using the case study data and results of EPB tunneling on stress path analyses, the proposed equation is verified. Key words:tunnels;earth pressure balanced shield;consolidation settlement;simulation; stresses;deformation 1土压盾构施工过程对土层应力路径的影响 的变化)。
施工技术 2013年1月下 92 CONSTRUCTION TECHNOLOGY 第42卷第2期 土压盾构在砂性土中施工关键技术研究 王新,沈奇2 (1.上海城市建设设计研究总院,上海200125;2.上海城建市政工程(集团)有限公司,上海200065) [摘要]对杭州地铁2号线区间段施工进行现场跟踪,提出砂性土中盾构施工的主要技术难题,并对施工中的关键 技术进行了总结分析.其中采取放慢推进速度均匀推进、改良同步注浆材料、加强二次补浆管理和对注浆补浆设 备养护等措施能够较好地控制地表沉降.向刀盘前方注入膨润土浆液,并通过泡沫改良土稳定土压,持续出土. 向刀盘前方和盾构侧面注人膨润土浆液,可以降低盾构推力和减小刀盘弯矩.采取有效降水止水措施可减少加固 薄弱区可能造成的工程风险. [关键词]隧道工程;土压平衡;盾构;砂性土:施工技术 [中图分类号]TU455 [文献标识码]A [文章编号]1002-8498(2013)02-0092-03 Study of Key Technology on EPB Shield Construction in Sandy Soil Wang Xin'.Shen Qi2 (1.Shanghai Urban Construction Design Research Institute Shanghai 200125 China; 2.Shanghai Urban Construction Municipal Engineering Group)Co.Lad.Shanghai 200065 China) Abstract:In this paper the scene of Hangzhou Metro Line 2 interval segment construction was tracked and the main technical problems were proposed which shield constructed in sandy soils.Then the key technology of construction was analyzed.Taking to slow down the advanced speed and uniform propulsion improved synchronization grouting material to strengthen management of the secondary slurry and equipment maintenance were better measures to control surface settlement.Bentonite slurry which was injected into the front of the cutter and the soil improved by foam were used to stabilize the soil pressure and transport out of soil continued.Injecting bentonite slurry into the.front and side of the shield could reduce the thrust of the shield and reduce the moment of the cutter.Taking effective precipitation and sealin...
[关键词】隧道工程:盾构;土压平衡盾构:砂卵石地层;摇进参数:注浆 [中图分类号]TU761.5;U459.5[文献标识码】A[文章编号】1002-8498(2012)13-0070-05 ConstructionTechnology ofEarthPressureBalance Shield CrossingRiver for LongDistance inSand Gravel Layer Yu Genshe'. Wang Dahai²,Zheng Pengwu' (1.China Communications Construction Co.,Lad.,Bejng 10008s, Chind; 2. CCCC Firs Harbor Enginering Co., Lud.,Tianjin 300042, China) Abstract:Construction Technology for Balanced Shield Crossing River for Long Distance in Sand Grarel Stratum The authors addressed the construction technology for balanced earth pressure shield crossing river for long distance in sand gravel stratum with respect to shield machine transformation, slurry mix proportion, muck improvement, etc. The main control parameters of shield construction in the initial testing phase includes advancing speed,cuter head speed, thrust and torque of cutter head,earth pressure and slurry mix proportion. The construction was progresed strictly following the parameters set in the initial testing phase and the result shows that the cuter hesd maintained good durability, which ensured the safety of long distance tunneling. Key words: tunnels; shields; carth pressure balance shield;sand gravel layer; tunneling parameters; grouting 地铁盾构施工所遇地质因地域的不同具有很装,螺栓连接。
施工技术 2012年4月下 22 CONSTRUCTION TECHNOLOGY 第41卷第363期 土压平衡盾构土仓压力设定与控制方法探讨 杨永强 (中铁一局集团城市轨道交通工程有限公司,院西西安710054) 【摘要]利用现有的土力学理论,对土压平衡盾构推进与停机两种状态下开挖面前方土压力与土仓内土压力类型 进行了分析.通过理论计算和分析,提出了根据开挖面前方地层的地质条件和沉降要求等进行土仓压力设定的方 法,指出了当土仓内土体与开挖面前方土体基本一致时,土仓压力很难与开挖面前方土压力基本相同.通过理论 分析,提出了土仓压力控制的方法,以及果取土仓内土体改良、注人泡沫或高压气体形成气压、严格控制出土量等 控制土仓压力的技术措施. 【关键词】隧道:盾构:土压平衡盾构:土仓压力:设定;控制 [中图分类号]U455 [文献标识码]A[文章编号]1002-8498(2012)08-0022-05 Study on the Method of Setting and Control Earth Pressure in the Earth Pressure Balance Shield Yang Yongqiang Track Traffic Engineering Co.Led.of China Railway No.I Group Xi'an Shaanxi 710054 China) Abstract:Using the existing soil mechanics theory the type of earth pressure between in front of excavation face and in soil warehouse is analyzed when the EPBM is working or out of service.By theoretical calculation and analysis the method is put forward that how to set earth pressure in soil warehouse according to the geological conditions in front of excavation face and sedimentation requirements.It is also pointed out that when the soil inside of warehouse is consistent with that in front of excavation face earth pressure in soil warehouse is difficult to equal to earth pressure in front of excavation face.Through theoretical analysis the method of control earth pressure in soil warehouse is put forward in conjunction with the technical measures that how to control earth pressure by improving soil injecting bubble or forming air pressure by high-pressure gas and strictly controlling...
2014年5月上 施工技术 第43卷第9期 CONSTRUCTION TECHNOLOGY 127 D0I:10.7672/5j52014090127 土压平衡盾构全断面硬岩施工技术 闫建诚 (中国中铁一局集团有限公司,陕西西安710054) [摘要]盾构隧道开挖断面范围为硬岩地层时,存在盾构掘进速度慢、盾构姿态控制难度大、设备及刀具磨损严重 且刀具更换频繁等问题.结合实际工程,介绍了盾构选型、掘进模式选择、盾构掘进参数和盾构姿态控制、刀具管 理等关键措施,确保盾构安全顺利推进. [关键词]隧道工程:盾构;全断面砂层;渣土改良;沉降 [中图分类号]U455.3 [文献标识码]A [文章编号]1002-8498(2014)09-0127-04 Construction Technology of Earth Pressure Balance Shield in the Whole Section Hard Rock Layer Yan Jiancheng China Railway First Group Co.Ltd.Xi'an Shaanxi 710054 China) Abstract:There are some difficulties when tunnel section locating in weathered hard rock stratum such as slow tunneling speed difficulties in controlling shield posture equipment and serious tool wearing and frequent tools replacing.Based on actual project key measures are introduced to ensure the safety and successful shield construction including choosing the reasonable selection of shield and driving mode strictly controlling of shield tunneling parameters and shield posture and strengthening shield tools management. Key words:tunnels;shields;whole section sand layer;soil amelioration;settlement 1工程概况 2.1选型原则 某盾构区间岩石地质条件复杂,既有极为松软 隧道穿越范围围岩强度、裂隙发育程度和地下 的淤泥质土、砂层,又有坚硬的微风化混合岩、辉绿 水含量等地质特征直接决定了盾构机性能要求,选 岩等.岩石平均强度70MPa以上,最大单轴抗压强 择或设计适应地质条件的盾构机很关键,选型主要 度可达159MPa 该区间左、右线分别采用一台海瑞 注意以下几个方面. 克盾构机及一台维尔特盾构机.两台盾构机在设 1)硬岩刀盘的刀具应以滚刀为主,通常设计为 计制造时均考虑了对不同地层的适应性,设计扭矩 滚刀和刮刀可以互换的形式:为防止在巨大的推力 大,推力大.刀盘驱动电机总功率均为945kW 维 下刀具变形,刀座和刀箱均是重型设计;刀盘的开 尔特盾构机设计最大扭矩9550kNm 设计最大推 口率≥25%,以方便石渣进入土仓. 力36000kN;海瑞克盾构机设计最大扭矩5300kN 2...
[关键词]隧道工程;盾构;全断面砂层;硅土改良;沉降;施工技术 [中图分类号】U455.43【文献标识码]A[文章编号】1002-8498(2012)01-0069-06 Key Construction Techniques of EarthPressureBalance Shield in the WholeSectionSandLayer YangYongqiang (Track Traffc Engineering Co. ,ld of China Railway No.1 Group,Xi'an,Shaanxi710054,China) Abstract;Because sand layer in less fine particles,possesses cohesion small,big internal friction angle, the high permeability coefficient,poor stability and big density and other characteristics,there are technical problems like driving parameters incoordination, earth pressure balance tunneling mode dificult to build,equipment badly worn and settlement difficult to control when earth pressure balance shield sand layer is the main reason for the shield tunneling dificulties,the author adopts the method bining the engineering test, theoretical analysis and practical application, studies engineering practice and construction key technologies such as soil amelioration with injection bentonite mud primarily and foam, and settlement control. Good results have been achieved and the construction experience is summarized. Key words:tunnels; shields; the whole section sand layer; soil amelioration;settlement; construction
近些年来,我国开展大规模的城市地铁工程建流动性差、稳定性差等特性,经刀盘切削到土仓中 设,盾构法施工技术以其安全可靠、绿色环保的优的砂土塑流性差,土压平衡盾构在砂层(尤其是全 势在地下工程领域取得突飞猛进的发展。
施工技术 2015年10月上 78 CONSTRUCTION TECHNOLOGY 第44卷第19期 D0I:10.7672/8js2015190078 土体滑移对被动加载型锚杆的影响分析* 张伟,王政1,程佳佳2 (1.河南科技大学土木工程学院,河南洛阳471023;2.天津大学管理与经济学部,天津300073) [摘要]以被动加载型锚杆为研究对象,建立了关于锚杆和土壤的力学模型,研究了土体滑移对锚杆造成的影响. 用ANSYS对选取的错杆和足够大区域土体进行分析,采用弹簧单元Spring-damperl4来模拟外界土体和该区域之 间的联系,并选取Drucker-Prager材料模型来描述土体的本构关系.研究结果表明,当锚杆受到沿错杆垂线方向移 动的土体作用时,位移变形是不均匀的,最大位移变形处在杆的端部;应力分布沿杆长方向也是不均匀的,铺杆在 靠近端部位置剪应力达到最大值. [关键词]土体滑移:锚杆;被动加载;模拟分析 [中图分类号]TD353.6 [文献标识码]A [文章编号]1002-8498(2015)19-0078-03 Analysis on the Influence of Soil Slip on Passive Loading Anchor Zhang Wei Wang Zheng' Cheng Jiajia2 (1.School of Ciril Engineering He'nan Unirersity of Science and Technology Luoyang He'nan 471023 China; 2.College of Management and Economics Tianjin Unirersity Tianjin 300073 China) Abstract:This paper aimed to study passive loading anchor mechanical models of anchors and soil were established.The influence of soil slip on anchors was studied.ANSYS software was selected to analyze anchors and large enough area soil Spring-damperl4 element was used to simulate connections between outside soil and this area.Drucker-Prager material model was used to describe constitutive relation of soil.The results show that displacements are uneven when anchors are subject to effect of soil movement along vertical direction of anchors.The maximum of displacement locates at the end of anchors.Stress distribution along the direction of anchors is also uneven.The maximum of shearing stress locates near the end. Key words:soil slip;a...
施工技术 2015年4月上 102 CONSTRUCTION TECHNOLOGY 第44卷第7期 D0I:10.7672/5j52015070102 土中无轴宽型螺旋带现场拉力试验研究* 卢清国,曹元义 (北京工业大学建筑工程学院,北京100124) [摘要]针对在土中隧道掘进机前方布置多个无轴宽型螺旋器向土中旋入,螺旋旋入后产生的牵拉力使整个掘进 机前行的原理,制作了采用无轴宽型螺旋带方式牵拉前行的土中自行走式隧道掘进机,并进行了现场拉力试验研 究.通过理论分析计算,参照前期小型螺旋试验结果,通过在现场的掘进样机的牵拉试验,分析并得出了无轴宽型 螺旋带在掘进样机前行中可提供的拉力,为螺旋牵拉结构的选型和自行走式隧道掘进机的进一步开发和应用提供 参考依据. [关键词]隧道工程:自行走式掘进机:无轴宽型螺旋带:螺旋牵拉:试验 [中图分类号]U455.44 [文献标识码]A [文章编号]1002-8498(2015)07-0102-03 The Tension Research of Shaftless Wide Type Spiral Band in Soil Lu Qingguo Cao Yuanyi (The College of Architecture and Civil Engineering Beijing University of Technology Beijing 100124 China) Abstract:This paper aimed at the several wide type spirals without shaft placed in front of the tunnel boring machine which could provide pulling force and drive the whole machine forward when screwed in soil.The authors produced the self-propelled tunnel boring machine driven by wide type spiral band without shaft and did the field pull test.Through theoretical analysis refering to the pull test of small spiral earlier and the field pull test of boring machine the authors get the pulling force provided by wide type spiral band without shaft.Finally they get the selection basis of spiral pulled structure and the future development and application basis of self-propelled tunnel boring machine. Key words:tunnels;self-drive advancing machine;wide type spiral without shaft;screw driver;tests 0引言 的反力.利用此反力,通过推或拉自身结构使掘进 掘进机是一种应用于铁路、公路、城市市政等 机在土中“蠕动”伸缩式前进,是一种新的掘进机外 地下工程、隧道领域的高科技...
施工技术 2010年2月 86 CONSTRUCTION TECHNOLOGY 第39卷第2期 喷涂硬泡聚氨酯在屋面防水工程中的应用 王亮 (北京建筑工程学院土木与交通工程学院,北京100044) [摘要]不同类型的喷涂硬泡聚氨酯材料性能差异明显,可满足不同的屋面功能要求.通过工程实例,论述屋面采 用Ⅱ型硬泡聚氨酯和SBS改性沥青防水卷材构筑复合防水体系设计、施工的主要内容及质量控制措施,阐明了Ⅲ 型喷涂硬泡聚氨酯因具有良好防水性能,可作为屋面一道独立防水设防. [关键词]喷涂硬泡聚氨酯;保温防水层;倒置式屋面 [中围分类号]TU761.11 [文献标识码]A[文章编号]1002-8498(2010)02-0086-03 Application and Analysis of Polyurethane Spray Foam in Roof Waterproof Engineering Wang Liang (School of Civil Engineering and Traffic Engineering Beijing University of Cioil Engineering and Architecture Beijing 100044 China) Abstract:Different types of polyurethane spray foam are quite distinct from their material performance as can satisfy different requirements of roof function.In this paper design construction and quality control measures of a pound roof waterproofing system consisting ofⅢtype polyurethane spray foam and SBS modified bitumen waterproof roll roofing are illustrated by way of the actual project cases.The author demonstrates thatⅢtype polyurethane spray foamand can be regard as a separate waterproof barroer due to its favourable waterproof properties. Key words:polyurethane spray foam;insulation and waterproof layer;inversion type roof 喷涂硬泡聚氨酯即现场使用专用喷涂设备在屋面60mm厚Ⅲ型喷涂硬泡聚氨酯和单层4mm厚SBS改性 (或外墙基层上)连续多遍喷涂发泡聚氨酯后,形成的沥青防水卷材构成屋面复合防水体系,并将硬泡聚氨 无接缝硬质泡沫体.根据《屋面工程技术规范》酯作为屋面一道独立防水设防,同时又作为保湿层,以 GB50345-2004第4.2.10条规定,现喷硬质聚氨酯等泡充分发挥材料性能. 沫塑料保温层等5种情况,均不得作为屋面的一道防 鉴于硬泡聚氨酯保温防水层上不得直接进行防水 水设防.由此,在实际工程屋面防水设计中,绝大多数材料热熔、热贴法施工,且硬泡聚氨酯对沥青类和高分 情况下均未明确将硬泡聚氨酯作为一道独立的防水设 子类防水卷材与防水涂料均有...
2010年3月 施工技术 第39卷第3期 CONSTRUCTION TECHNOLOGY 79 喷射聚合物保温砂浆施工技术 张学伟,刘卫东,苏海华,邹文宝,肖煌俊 (上海理工大学城建学院,上200093) [摘要]在室内试验和工程实践的基础上,得出采用喷射聚合物保温砂浆施工技术是一种行之有效的墙体内保温 施工方法,尤其在历史保护建筑的改造中优势更加明显,它可以把墙体加固和墙体内保温结合起来,同时又考虑了 保护优秀历史建筑的原貌风格.该施工法用黏结强度较高的聚合物砂浆作为界面层,同时在墙体与界面层之间紧 贴墙面加钢丝网,有效地加固墙体;其喷射施工方式使得墙体内保温层连续均匀,有效防止了热桥的影响.简要介 绍了聚合物保湿砂浆的性能,着重闸述喷射案合物保温砂浆的施工工艺以及其加固保温机理. [关键词]聚合物保温砂浆;历史保护建筑;喷射施工技术;节能改造;外墙内保温 [中图分类号]TU526.826 [文献标识码]A[文章编号]1002-8498(2010)03-0079-03 Construction Technology of Spraying Insulation Polymer-modified Mortar Zhang Xuewei Liu Weidong Su Haihua Zou Wenbao Xiao Huangjun Department of Civil Engineering University of Shanghai for Science and Technology Shanghai 200093 China) Abstract:Based on indoor experiments and engineering practice the authors find out that construction technology of spraying insulation polymer-modified mortar is effective for interior insulation construction of exterior wall particularly in renovation and rehabilitation projects of excellent historic buildings.This technology can bine interior insulation with strengthening of wall simultaneously it can protect the original style of historic buildings.This technology is using polymer-modified mortar with outstanding bond strength as interface layer and in which laying steel mesh cling to wall surface to reinforce the wall effectively.The spraying construction method makes insulation layer continuous and well-distributed which prevents the effects of the thermal bridge significantly.Some performances of insul...
2017年7月上 施工技术 第46卷第13期 CONSTRUCTION TECHNOLOGY 141 D0I:10.7672/8js2017130141 喀斯特地貌综合管廊爆破施工关键技术 高远,陈清作,林贵松,刁凯,李奉雨 (中建城市建设发展有限公司,北京100037) [摘要]喀斯特地貌因其地质情况复杂,且占地面积极广,是管廊建设的一个重点研究课题.喀斯特地貌以岩层为 主,内部溶洞、节理发育,兼有泥夹石情况,爆破施工难度大.以六盘水市地下综合管廊为例,系统分析了喀斯特地 貌区域爆破的难点,研究喀斯特地貌的爆破施工技术. [关键词]综合管廊;喀斯特地貌;爆破;施工技术 [中图分类号]TU990.3 [文献标识码]A [文章编号]1002-8498(2017)13-0141-03 Key Blasting Construction Technology of Pipe Gallery in Karst Landform GAO Yuan CHEN Qingzuo LIN Guisong DIAO Kai LI Fengyu CSCEC City Construction Derelopment Co.Lid.Beijing 100037 China) Abstract:The karst landform is an important research subject of pipe gallery construction because of its geologieal condition and extremely broad area.The karst landform takes the rock layer primarily the internal limestone cave and jointing growth the putty to clamp the stone situation the blast working difficulty is big.Based on Liupanshui underground pipe gallery project construction this paper analyzed difficulties in blasting and studied the blasting technology. Key words:pipe gallery;karst landform;blasting;construction 0引言 酸盐类岩石)进行溶蚀作用产生的地貌现象.我国 所谓“综合管廊”(又名共同沟),即在地下设置 喀斯特地貌主要分布于贵州、云南、广西、四川、湖 专供各种公用事业摆放缆线或管道的隧道或沟道.南、湖北等地. 综合管廊是合理利用地下空间资源,解决地下各类 六盘水市地下综合管廊试点城市PPP项目位于 管网布置困难的有效途径,在日本及欧洲国家已有 贵州省六盘水市,地处贵州西部,与云南接壤,属于喀 近50年的发展历史.目前国内实施的“地下综合 斯特山区城市.作为西南岩溶中心,境内绝大部分为 管廊”方式是把市政、电力、通信、燃气、供水排水、 山区,岩溶地貌比较发育,碳酸盐岩石分布面积广,占 热力等各种管线集于一体,在城市道路的地下空间 土地总面积的63.18%左右,约6263km2. 建造一个集约化的隧道,以做到地下空间的综合利1工程概况 用和资源共享. 六盘水市是全国首批10个地下综合管廊试点 综合管廊一般为沿城市道路修建,基槽狭长,城市之一.本研究依托荷泉路综合...
2017年6月上 施工技术 第46卷第11期 CONSTRUCTION TECHNOLOGY 105 D0I:10.7672/5j52017110105 喀斯特地貌下城市地下综合管廊防水技术 潘学斌,高远,林贵松,刁凯 (中建城市建设发展有限公司,北京100037) [摘要]在全国城市地下综合管廊大规模建设的背景下,六盘水作为首批试点城市之一,且作为其中唯一一个喀斯特 地貌下的城市,管廊建设存在很多特殊难题.防水是这些难题中最为突出的一个.六盘水地下水系发达且水位很 高,且管廊防水要求很高,六盘水的管廊防水解决方案尤为重要.详细介绍了地下管廊的防水要求及防水施工工艺. [关键词]地下工程:综合管廊;喀斯特地貌;防水技术;施工技术 [中图分类号]TU99 [文献标识码]A [文章编号]1002-8498(2017)11-0105-04 Waterproofing Technology of Underground Pipe Gallery for Karst Geomorphology in City PAN Xuebin GAO Yuan LIN Guisong DIAO Kai CSCEC City Construction Derelopment Co.Lad.Beijing 100037 China) Abstract:Under the background of massive construction of city underground synthesis pipe gallery Liupanshui as one of the first batch pilot cities is only the city under a karst landform the pipe gallery construction has the special difficult problem.The waterproofing is the most prominent one in these difficult problems.Liupanshui ground water system is developed and water level is very high and pipe gallery waterproofing request is very high Liupanshui's pipe gallery waterproofing solution is especially important.This paper introduces waterproofing request and waterproofing construction process. Key words:underground buildings;pipe gallery karst synthesis;waterproofing;construction 六盘水地区属于喀斯特地貌,地下石林溶洞密20.9m 综合节点局部开挖达到8.95m 边坡坡比1:1. 布,地下水系发达且水位很高;且六盘水地区年降 综合管廊标准段模拟建成效果如图1所示. 水量大,下渗水量大.管廊作为地下结构,有些部 T00 分甚至低于雨季的地下水位.以上这些原因导致 103310 综合舱 污水舱 六盘水地区地下综合管廊的防水难度很大. 1工程概况 雨水枪目 100温垫 六盘水市作为全国首批10个地下综合管廊试 1002600 2000100 300 300300 ...
2017年9月下 施工技术 第46卷第18期 CONSTRUCTION TECHNOLOGY 107 D0I:10.7672/5j52017180107 商业综合体深基坑支护设计及施工技术 李建雄,梁超1,周立1,马磊,柴木叶2 (1.内蒙古工业大学土木工程学院,内蒙古呼和浩特010051;2.内蒙古银行股份 有限公司,内蒙古呼和浩特010010) [摘要]介绍了在桩锚联合支护体系下,深基坑施工过程中,由于设计变更对施工方案进行了调整和优化,并通过 有限元软件的受力性能分析及验算,在保证基坑施工安全稳定性的前提下实现了经济性. [关键词]基坑;深基坑;错索;桩;有限元分析 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2017)18-0107-03 Design and Construction of Deep Foundation Excavation Supporting Technology in Commercial Complex LI Jianxiong' LIANG Chao' ZHOU Li' MA Lei' CHAI Muye? (1.Civil Engineering Institute Inner Mongolia University of Technology Hohhot Inner Mongolia 010051 China; 2.Bank of Inner Mongolia Co.Ltd.Hohhot Inner Mongolia 010010 China) Abstract:Under the pile anchor bined support and in the process of deep foundation excavation construction due to design changes to the construction scheme for the adjustment and optimization are introdueed.Through the finite element software of mechanical performance analysis and calculation under the premise of ensuring the safety and stability of foundation exeavation construction the economy is realized. Key words:foundation excavation;deep foundation excavation;anchor rope;piles;finite element analysis 商业综合体通常基坑开挖面积大,深度深,而 北 周边建筑密度往往比较大,因此做好该类基坑支护 大唐国际 V区区 工程的设计施工,确保基坑安全和稳定尤为重要. 拟建酒店 1工程概况 (26) V区 呼和浩特市时代广场商务中心项目位于新华 西 拟建公寓A拟建公寓B 东 (29)1V区(28) 西街以北,新华广场以东.拟建项目为框架剪力墙 高层公共建筑高层酒店1区 (22) (18) 结构,包括3层地下室和地上26层的酒店、29层的 新华大街 南 公寓A、28层的公寓B 如图1所示.本工程基坑开 图1基坑平面布置 挖东西长约184m 南北宽约165m 拟开挖深度约在 Fig.I Layout of foundation exc...
【关键词】项目管理;商业智能;施工企业 [中图分类号】TU71【文献标识码】A[文章编号]1002-8498(2013)10-0089-05 Research andImplementation ofBusinessIntelligencein ProjectManagementof ConstructionEnterprises Zhou Yuguang (China Orerseas Group Co. ,Ltd. ,Hong Kong) Abstract: Construction enterprises developed and implemented various information systems in recent years, large amounts of data were generated when using these information systems,which includes valuable information for projectmanagement.However, due to the dispersion and isolation of the data,it is dificult to using these data for management and decision-making purpose. Business intelligence is a key technology to promote the project management level of construction enterprise by efectively data integration and analysis. The paper discussed the pattern of project management and the application of business intelligence, bined with the situation of China Overseas Holdings Limited to establish the business intelligence system of construction enterprise.At the end of the paper,author summarized the application results and discussed the future direction. Key words:project management;business intelligence; construction enterprises 0引言够形象、全面、及时、准确地为决策者提供把握企业 20世纪90年代以来,信息技术不断创新,信息脉搏的窗口。