2015年7月上 施工技术 第44卷第13期 CONSTRUCTION TECHNOLOGY 121 D0I:10.7672/sgis2015130121 外爬塔式起重机附着墙体加固分析 王三港,李庆达,乔伟,杨磊 (中建三局集团有限公司,北京100097) [摘要]根据项目外爬塔式起重机受力特点,建立塔式起重机及支撑架一体化计算模型,确定塔式起重机支撑架最 不利工况并根据塔式起重机支撑架附着墙体反力计算墙体配筋对墙体进行加固.加固措施解决了“一”字形剪力 墙因墙体变薄引起的墙体结构承载力不足、平面外稳定及墙体开裂等问题,并满足在混凝土强度未达到结构设计 要求时顺利爬升. [关键词]高层建筑;塔式起重机;加固;承载力;稳定性 [中图分类号]TH213.3 [文献标识码]A [文章编号]1002-8498(2015)13-0121-04 Reinforcement Analysis on Wall Attached of Tower Crane Wang San'gang Li Qingada Qiao Wei Yang Lei China Construction Third Engineering Bureau Group Co.Ltd. Beijing 100097 China) Abstract:According to the particularity of tower crane the calculation model of integration of tower crane and support frame was established.The worst working condition of support frame was determined.And the wall was reinforced by means of the reaction force calculation of tower crane support frame attaching to the wall.The measures solved the issue of the insufficient of the structure bearing capacity the out-of- plane stability the wall cracking which caused by the attenuation of the“一"shaped wall.And it made the tower crane climbing when concrete strength can not reach the design strength. Key words:tall buildings;tower cranes;reinforcement;bearing capacity;stability 1工程概况 47~51层700mm 51~56层550mm 56层~屋顶 1.1结构概况 楼面500mm. 天津现代城B区项目位于天津市和平区内,南 1.2爬塔支撑架概况 侧毗邻伊势丹商场,总建筑面积263797m2 其中地 塔式起重机支撑架主要构件为水平主梁、竖向 上214201m2 地下49596m2 由酒店塔楼(209m 47 斜撑、水平斜撑及水平连接杆,施工过程中至少有2 层)、办公塔楼(339m 67层)、裙房(最高10层)及 套支撑架附着于墙上,底部支撑架提供竖向及水平 地下室(5层)组成. 支撑力,上部支撑架提供水平支...
[关键词】建筑机械;塔式起重机;外挂内爬式塔式起重机;支撑系统;安装;拆除 [中图分类号】TH213.3 【文献标识码]A [文章编号】1002-8498(2015)05-0007-03 Installation andDemolition ofSupportSystem ofExternalHanging andInteriorClimbingTowerCrane Wang Qi,Yu Jianwei,Zou Dongyang,Liu Qingfeng,Wen Liang (Steel Structure Engineering Company of China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200125,China) Abstract;Attached tower crane or interior climbing tower crane is usually used in construction of super tall building. Common climbing mode of interior climbing tower crane is that support system is arranged in elevator shaft or line shaft of super tall building,the installation process of the support system is simple. The installation process of the support system of external hanging and interior climbing tower construction specifications areintegratedinstallationand demolition process of support systemof external hanging and interior climbing tower crane are introduced in detail. Key words:construction equipment; tower cranes;external hanging and interior climbing tower cranes; support system;installation; demolition 在超高层建筑施工过程中,塔式起重机作为关件固定(见图1)。
2013年2月上 施工技术 第42卷第3期 CONSTRUCTION TECHNOLOGY 31 D01:10.7672/8gj82013030031 外墙岩棉保温板薄抹灰施工技术 王全逵,苑伟松,刘坤 (中建二局第四建筑工程有限公司,天津300457) [摘要]外墙岩棉保温板薄抹灰施工技术是近年来刚刚开始使用的新型外墙保温系统.结合工程实践,为克服普 通岩棉板吸水量大、抗拉强度低及防火性能低等缺点,采用外墙岩棉保温板薄抹灰施工技术,有效解决了该问题. 详细介绍了材料性能、施工工艺及施工要点.结果表明,该技术的应用有效降低了造价,减轻了外墙面荷载,取得 了良好的抗裂防护效果. [关键词]保温;岩棉板;网格布;施工技术 [中图分类号]TU761.12 [文献标识码]A[文章编号]1002-8498(2013)03-0031-04 Construction of Thin Plastering External Thermal Insulation with Rock Wool Board Wang Quankui Yuan Weisong Liu Kun The Fourth Construction Engineering Company Ltd.of China Construction Second Engineering Bureau Tianjin 300457 China) Abstract:Thin plastering external thermal insulation with rock wool board is a new external wall insulation system.Normal rock wool boards have the defects that they absorb a large amount of water and have low tensile strength.The application of thin plastering external thermal insulation with rock wool board successfully solved these problems.The material performance construction process and construction key points are introduced in detail.Engineering practice results show that this construction technology reduced the cost relieved the loads on external walls and obtained good anti-cracking performance. Key words:insulation;rock wool board;mesh;construction 1工程概况 合金外框中空玻璃保温门窗,传热系数 天津经济技术开发区西区西北组团(富士康) ≤2.70W/(m2K) 气密性等级达到国家标准6级 蓝白领公寓项目一期工程一标段位于天津市开发 水平;屋面铺设230mm泡沫混凝土(最薄处),传热 区西区秋实路以西,京津唐高速公路以北.1~11 系数≤0.442W/(m2 K);分隔采暖与非采暖空间的 号楼为住宅,层高3.6m 均为6层,总高度23.1m; 隔墙为200mm厚加气混凝土砌块墙,传热系数≤ 12号楼为...
[关键词]黏结强度;测试;胶粘剂;外墙外保温;饰面层 [中图分类号】TU56[文献标识码]A[文章编号〕1002-8498(2017)04-0092-03 DetectingTechnologyforCohesiveStrengthenofExternal ThermalInsulationSystemDecorationMaterials Su Yunhui,Guo Chunquan,Bai Xiaoling,Rexiti,WangYongming (Xinjiang Research Institute of Building Sciences LLC,Urumqi,Xinjiang830054,China) Abstract:With the widely application of adhesive in building decoration,building energy-saving building and building strengthen engineering,the cohesive strengthen test method in JGJ110 standard are used in building material cohesive strengthen test.According to use condition of the test method in vary engineering,the authors put forward some practice problems. Key words:cohesive strengthen;testing;adhesives; external thermal insulation system;decoration 近几年,随着外墙外保温所用材料和施工工艺随着外保温材料和施工工艺发展的多样性,虽 的迅猛发展,对检测人员的技术要求及检测方法和然很多外保温工程中已减少了对胶粘剂使用的依 类型也不断带来新的挑战。
施工技术 2015年5月上 30 CONSTRUCTION TECHNOLOGY 第44卷第9期 D0I:10.7672/sgjs2015090030 外墙外保温装饰一体化系统施工工法 李勇 (湖南省第二工程有限公司,湖南长沙410015) [摘要]外墙外保温装饰一体化系统施工工法是将外墙保温和装饰合二为一先在工厂集成加工,然后在施工现场 进行安装,一次施工即可完成保温和装饰两个工序,既满足了外墙保温要求,又确保了外墙立面装饰效果.与传统 工艺相比较,本工法具有工艺简便、工期短、质量优、综合成本低、绿色环保等特点,取得了良好的经济效益和社会 效益. [关键词]装饰装修;外保温;一体化施工;节点 [中图分类号]TU767.5 [文献标识码]A [文章编号]1002-8498(2015)09-0030-03 Construction Method for Exterior Insulation Decoration Integration System Li Yong Hu'nan No.2 Engineering Co.Ltd.Changsha Hu'nan 410015 China) Abstract:The construction method for exterior insulation decoration integration system is bining external insulation and decoration integrated in the factory first and then installing in the construction site.It can plete two processes for one time.The construction method can both meet the requirement of exterior wall thermal insulation and ensure the exterior facade decoration effect.Compared with the traditional process this method had advantages of simple process short construction period good quality low prehensive cost green environmental protection and other characteristics which has obtained good economic and social benefits. Key words:decoration;exterior insulation;integration construction;joints 随着社会的发展,对环境保护的要求越来越迫结了本施工工法. 切和重要,能源的合理使用造福子孙后代.中国是1工法特点 一个人口大国,更是一个能源消耗大国,大力提倡 1)现场施工工序简便,工程施工质量有保障 建筑节能已列入国家“十二五”计划的重要日程,也由于一体化板是集中在工厂加工,在施工现场安 是国家的一项重要国策. 装,把传统的现场人为不确定、不可控的因素都集 传统的外墙外保温系统由于其热桥工艺处理 中在工厂采用机械化予以解决,避免了外墙饰面 复杂,并存在开裂、空鼓、脱落和保温层施工后外装 层、保温层的空鼓、开裂、渗漏等质量通病,大大提 饰饰面层操作...
施工技术 2010年3月 82 CONSTRUCTION TECHNOLOGY 第39卷第3期 外墙外保温体系自重应力和温度应力分析 王满生,杨威,黄振利2 (1 北京市房地产科学研究所,北京100021;2.北京利建筑工程有限资任公司,北京100073) [摘要]以三明治外墙外保混体系为例,采用北京地区的冬夏季环境温度和日照条件,分析计算外墙外保温体系的 整体受力状况.主要考虑体系的自重应力和温度应力的影响.通过分析得出界面层和抹面层(抗裂砂浆层和装饰 层)处平行于基层墙面上的湿度应力是影响整个体系稳定性和耐久性的主要因素,同时认为当前外墙外保温体系 相应标准中缺少材料的拉压应力的力学性能指标,需要引起相关部门的重视. [关键词]外墙外保温体系;湿度应力;力学性能参数;稳定性;耐久性 [中图分类号]TU111.41 [文献标识码]A [文章编号]1002-8498(2010)03-0082-03 Deadweight Stress and Temperature Stress Analysis of External Wall External Insulation System Wang Mansheng' Yang Wei' Huang Zhenli? (1.Institute of Beijing Real Estate Science Technology Research Beijing 100021 China; 2.Beijing Zhenli Construction Co.Lad.Beijing 100073 China) Abstract:Taking some sandwich system as an example the authors analyze and calculate global mechanical status under surrounding temperature and sunshine condition in winter and summer in Beijing area and mainly think about influence of deadweight stress and temperature stress on global mechanical status.By analyzing it is found out that the key factor which can influence on stability and durability of this system is temperature stress on interface and mortar layer which horizontally parallels to wall.Also the current standards are lack of the mechanical properties indexes of tension and pression stress on external wall external insulation system which need to be paid attention for the relevant departments. Key words:extemal wall external insulation system;temperature stress;mechanical properties index; ...
2015年2月上 施工技术 第44卷第3期 CONSTRUCTION TECHNOLOGY 79 D0I:10.7672/5js2015030079 外加剂对聚合物改性水泥砂浆凝结时间的影响* 冯虎,高丹盈,徐洪涛2,赵亮平1 (1.郑州大学土木工程学院,河南郑州450001;2.郑州大学综合设计研究院有限公司,河南郑州450001) [摘要]通过系统试验,研究了聚合物改性剂、硅烷偶联剂、减缩剂及消泡剂对聚合物改性水泥砂浆凝结时间的影 响.发现聚灰比(聚合物水泥含量比)与偶联剂、减缩剂及消泡剂掺量均对水泥砂浆的凝结时间影响显著:聚合物 改性水泥砂浆的凝结时间较普通水泥砂浆有所延长,且随着聚灰比的增加而增大,但增长程度越来越小;随着3种 外加剂掺量的增加凝结时间均表现出增大的现象,但增长速率随聚灰比的增加而减弱,聚灰比的影响程度高于外 加剂;无水酒精作为偶联剂稀释剂时使聚合物改性水泥砂浆凝结时间顺延程度加剧.从凝结时间考虑,最优的聚 合物和外加剂接量如下:聚灰比0.1,消泡剂3%c 偶联剂为3%,减缩剂宜≤2%.最后对以上3种外加剂的作用机 理做了探讨. [关键词]建筑材料;砂浆;聚合物水泥砂浆;外加剂:凝结时间;聚灰比;试验研究 [中图分类号]TU526.812 [文献标识码]A [文章编号]1002-8498(2015)03-0079-06 Effect of Admixtures on Setting Time of Polymer Modified Cement Mortar Feng Hu' Gao Danying' Xu Hongtao2 Zhao Liangping' (1.Department of Civil Engineering Zhengzhou University Zhengzhou He'nan 450001 China; 2.Zhengzhou Unirersity Multi-functional Design and Research Academy Zhengzhou He'nan 450001 China) Abstract:An experimental study on the relativity between polymer cement ratio silence coupling agent defoamer shrinkage reducing admixture and the setting time of polymer modified cement mortar was carried out.The results show that the influence of polymer cement ratio coupling agent defoamer and shrinkage reducing admixture content on the setting time is significant.Compared with ordinary cement mortar the setting time of polymer cement mortar was extended and increased with the polymer cement ratio inerease but the inerease rate was more and more slow.The setting time increased with the contents of the...
2017年8月上 施工技术 第46卷第15期 CONSTRUCTION TECHNOLOGY 9 D0I:10.7672/8js2017150009 外倾式变曲率竹饰面弧墙模板支撑 一体化施工方案设计 王洪腾,沈映,陆建飞1,韩超1,徐晗2 (1.中天建设集团有限公司,浙江杭州310020;2.中天建设集团浙江钢构有限公司,浙江杭州310008) [摘要]南宁万科大厦首层角部外倾变曲率竹饰面弧墙施工,改变常规模板加固体系和支撑加固体系分离的模式, 创新性地提出一种模板支撑一体化的加固体系.施工中采用增加弧墙内钢骨,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,并通过分阶段施工数值模拟分析,确保了模板支撑体系满足强度和刚度的要求.并 设计了钢筋桁架环箍和衬模竹片的模板结构,解决了模板支撑体系中主楞抗弯刚度不足和竹片纹理施工效果的 难题. [关键词]高层建筑:模板;支撑;变曲率;数值模拟;方案设计 [中图分类号]TU755.2;TU731.2 [文献标识码]A [文章编号]1002-8498(2017)15-0009-05 Design of Integral Construction Scheme for Formwork Support of Curved Bamboo Wall with Outer-incline Bending Curvature WANG Hongteng' SHEN Ying' LU Jianfei' HAN Chao' XU Han2 (1.Zhongtian Construction Group Co.Ltd.Hangzhou Zhejiang 310020 China;2.Zhejiang Steel Structure of Zhongtian Construction Group Co.Ld.Hangzhou Zhejiang 310008 China) Abstract:In the construction of bamboo facade arc wall of Nanning Vanke Building the mode of separation of conventional formwork reinforcement system and support reinforcement system is changed and a kind of reinforcement system of formwork and support integration is innovatively proposed in the first layer corner of Nanning Vanke Building.During the construction the steel bar is increased and the whole load in the construction is transferred to the steel frame by the pull-screw which is welded on the steel frame.Through the staged construction numerical simulation it ensures that the formwork support system meets the strength and rigidity requirement.And the formwork struct...
施工技术 2017年8月上 14 CONSTRUCTION TECHNOLOGY 第46卷第15期 D0I:10.7672/8js2017150014 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]TU755.2;TU731.2 [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 (Zhongtian Construction Group Co.Lid.Hangzhou Zhejiang 310020 China) Abstract:The curved bamboo wall construction of 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 construetion the internal steel reinforeement is added in the arc 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 of the steel truss hoops and the lining mold bamboo is designed to solve the problems of insufficient stiffness and strength and poor three-dimensional space adaptation.The formwork support integrated reinforcement system design is simple the construction process is simple and fast.Are wall positioning is...
[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 ContinuousBeaminPondFillingAreaSoftGround HUANG Qian',GUANG Ming²,ZHANG Dongshan (1.General Contracting Branch of Road & Bridge International Co.,Lad,Beijing 100012,China; 2.No.1 Engineering Co.,Lid.of FHEC of CCCC,Beijing 102205, China) Abstract:Based on the cast-in-place box girder construction of Hewu erba munication area Cramp 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 I56-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。
2015年8月上 施工技术 第44卷第15期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/8js2015150095 埋弧焊免清根技术在钢结构行业的应用* 冯清川,赖腾飞,焦燕星 (中建钢构阳光惠州有限公司,广东惠州516259) [摘要]在建筑钢结构制作行业,埋弧焊焊接工艺应用非常普遍.埋弧焊以生产效率高,焊接质量稳定,劳动条件 好等优势在钢结构加工行业古有一席之地.埋弧焊免清根技术的应用,对钢结构焊接中的成本控制有着举足轻重 的作用.介绍了埋弧焊免清根技术的优点及施工难点,并进行试件试验分析了其施工参数及技术要点. [关键词]钢结构;焊接;埋弧焊;免清根;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2015)15-0095-02 Application of Submerged Arc Welding Without Back Chipping in Steel Structure Industry Feng Qingchuan Lai Tengfei Jiao Yanxing China Construction Steel Structure Sunbright Huizhou Co.Ld.Huizhou Guangdong 516259 China) Abstract:In the structural steelwork fabrication industry submerged arc welding is widely used.The submerged arc welding has high production efficiency with stable welding quality and good working condition thus making it take a place in this industry.With the application of submerged are welding without back gouging technology it will play a significant role in the cost control of structural steelwork welding.This paper introduces the advantages and difficulties.Then through ponents test the construction parameters and technical keys of submerged arc welding are analyzed. Key words:steel structures;welding;submerged arc welding;without back chipping;construction 0引言 以对埋弧焊焊接工艺参数要求比较宽.20世纪60. 埋弧焊作为最早获得应用的机械化焊接方法,70年代,开始对窄间隙埋弧焊进行研究,并在20世 是钢结构焊接生产中应用最广泛的工艺方法之纪80年代,窄间隙埋弧焊开始应用于工业生产,它 一,也是目前在钢结构加工行业生产效率较高的 的主要应用领域是低合金钢厚壁容器及其他重型 工艺方法之一.埋弧焊免清根工艺研究者众多,然 焊接结构2.埋弧焊工艺的主要研究路线有免清 而,在钢结构加工行业中应用甚少.研究埋弧焊免 根免打底埋弧焊工艺、窄间隙埋弧...
[关键词]地下工程;地下室;回填土;坡形地貌;结构倾覆 [中图分类号]TU375;TU93 [文献标识码】A [文章编号]1002-8498(2015)23-0079-03 Influence Analysis of Backfill with Slope Topography on BasementStructure Li Cuicui',Song Jieping',Jiang Dan² (1.Qingjian Group Co.,Lad.,Qingdao,Shandong 266071,China;2.School of CivilEngineering, QingdaoTechnologicalUniversity,Qingdao,Shandong266033,China) Abstract:The checking calculation of the stability and anti-sliding performance of slope construction is important in design stage.The effect of backfill condition on the whole structure overturning is not consideredingeneralcase.Thispaperputsforwardrelevantcalculationformulabyconsideringthefect of backfill condition on the whole structure overturning,checks the minimum bearing capacity of the basement in different backfill conditions based on some key project,which ensures the structure safety. Key words:underground;basement;backfill;slope topography; structure overturning 方,常指山坡和谷坡。
根据《高层建筑混凝土结构技术规程》JGJ3一 [作者简介]李翠翠,工程师,E-mail:296076201@qq. 2010中的要求,在重力荷载和水平荷载共同作用 [收稿日期】2014-12-29 下,对于高宽比>4的高层建筑物,基础底部不宜出 万方数据
80 施工技术 第44卷 L 图4重力荷载作用的基础底部压应力分布示意 a结构立面 Fig.4 The pressive stress distribution on the b荷载作用位置 bottom of the foundation unde...
2014年10月上 施工技术 第43卷第19期 CONSTRUCTION TECHNOLOGY 85 D0I:10.7672/5js2014190085 坡地地貌岩体基坑抗浮水头试验模拟与分析 杨淑娟1,于德湖1,张同波2,余良刚1 (1.青岛理工大学土木工程学院,山东青岛266033;2.青建集团股份公司,山东青岛266000) [摘要]通过自制试验模型,对坡地地貌岩体基坑在不同降雨强度和坡度下的抗浮水头进行研究,并与有限元程序 计算结果对比分析,验证了前期所推导的抗浮水头计算公式的合理性.通过研究进一步表明极端降雨条件下,基 坑下游最低点向坑外溢水时,基坑上游水位并不与最低点持平而是持续增长,若取下游最低点作为抗浮水位值,工 程将不能满足抗浮要求,存在安全隐患. [关键词]基坑;坡地;岩体;抗浮水头;坡度;试验 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)19-0085-05 Experimental Simulation and Numerical Analysis of the Anti-floating Head of Slope Landform Rock Foundation Excavation Yang Shujuan' Yu Dehu' Zhang Tongbo2 Yu Lianggang' (1.School of Civil Engineering Qingdao Technological University Qingdao Shandong 266033 China; 2.Qingjian Group Co.Ld.Qingdao Shandong 266000 China) Abstract:Through self-made test model this paper studies the anti-floating head of slope landform rock foundation excavation in different rainfall intensity and slope.With the finite element calculation results for parative analysis this paper verifies the reasonableness of the calculation formula of anti-floating head derived preliminary.By further study it shows that under conditions of extreme rainfall when the lowest point of foundation excavation downstream spills outside the foundation excavation upstream water level and the lowest point is not flat but sustained growth.If downstream lowest point is presumed as anti-floating level value the project will not meet the requirements of anti-floating as well as potential safety hazard. Key words:found...
施工技术 2015年10月上 28 CONSTRUCTION TECHNOLOGY 第44卷第19期 D0I:10.7672/8js2015190028 坑顶大梁桁架支座预埋件后安置施工技术 施宇冬,杨媛鹏,李峁清,李小飞,王勃龙 (中国建筑第八工程局有限公司,上海200122) [摘要]一般预埋大型钢结构构件通常是先进行预埋件定位安装再进行钢筋绑扎等后续工序.上海世茂深坑酒店 坑顶大梁上的28个主楼钢结构桁架支座预埋件结构相当复杂,如果先进行预埋件的安装,将使得后续的钢筋绑 扎、螺旋箍安装和预应力锚索的定位加固变得困难.因此,坑顶大梁的桁架支座预埋件施工采用后安置法,实际工 程中效果良好. [关键词]梁;钢结构;预埋件;后安置;施工技术 [中图分类号]TU375.1 [文献标识码]A [文章编号]1002-8498(2015)19-0028-02 Construction Technology of the Roof Truss Girders Placed After Embedded Parts Shi Yudong Yang Yuanpeng Li Maoqing Li Xiaofei Wang Bolong (China Construction Eighth Engineering Bureau Co.Ltd.Shanghai 200122 China) Abstract:Generally pre-buried large steel structural members which are usually firstly installed of embedded parts positioning rebar and other follow-up processes.The 28 main girder steel structure truss support structures are quite plex embedded parts of Shanghai Shimao Chasm Hotel.If the embedded parts were installed firstly the positioning of subsequent reinforcement assembling installation and spiral hoop prestressed anchor cable reinforcement bees difficult.The roof truss support embedded parts of the girder was constructed after placement and the practical engineering effect is good. Key words:beams;steel structures;embedded parts;post placement;construction 1工程概况 本工程拟建场地位于全国12个国家级旅游度 假区之一的松江余山风景区内(天马山与横山间), 场地南近辰花路、西临横山塘、北靠旺家浜,占地面 积约136516m2 其中工程建设占地面积约 105350m2 是国内首个集大型住宅、酒店、休闲娱乐 于一体的地平线主题项目.因场地条件比较特殊, 主体工程位于松江天马山深大采石坑坑内,整栋建 图1深坑酒店效果 筑附建在深坑边坡上,创意独特,如图1所示. Fig.1 Effect of the hotel...
施工技术 2015年10月上 68 CONSTRUCTION TECHNOLOGY 第44卷第19期 D0I:10.7672/8js2015190068 坑边不均衡堆载对基坑围护结构及周边环境影响分析 程群,刘芳玲1,王强2 (1.中建四局第六建筑工程有限公司,安徽合肥230011;2.安徽理工大学土木建筑学院,安徽淮南232001) [摘要]为了深人研究基坑底板施工过程中坑边不均衡堆载对基坑围护结构的内力和位移及周边环境的影响,运 用岩土有限元软件MIDAS/GTS模拟了不均衡堆载下深基坑开挖过程,从而得到了不均衡堆载条件下基坑围护结 构内力、变形及地表沉降的分布规律.计算和分析结果表明:坑边不均衡堆载对基坑围护结构的内力和位移及地 表沉降产生了较大影响,尤其是围护结构水平位移及地表沉降,这使得基坑的稳定性处于不利的状态. [关键词]地下工程:基坑:不均衡堆载:围护结构;内力;位移 [中图分类号]TU43 [文献标识码]A [文章编号]1002-8498(2015)19-0068-06 Influence Analysis of Building Envelope and Surrounding Environment Under the Excavation Unbalanced Heaped Loading Cheng Qun' Liu Fangling' Wang Qiang㎡ (1.China Construction 4th Engineering Bureau 6th Co.Ltd.Hefei Anhui 230011 China:2.School of Civil Engineering and Architecture Anhui University of Science and Technology Huainan Anhui 232001 China) Abstract:In order to research the influence of internal force of retaining structures the deformation and the surrounding environment under the excavation side loading during construction of foundation excavation bottom MIDAS/GTS was used to simulate the unbalancedheaped load under deep excavation process which obtained internal force of retaining structure deformation and subsidence.The results show that building envelop and surrounding environment under the excavation side loading has a larger influence especially the horizontal displacement of retaining structure and the settlement of ground which makes the foundation excavation in unfavorable state. Key words:underground;foundation e...
2016年8月下 施工技术 第45卷第16期 CONSTRUCTION TECHNOLOGY 53 D0I:10.7672/8js2016160053 坑底钢管静压桩地基托换加固技术应用 张廷会,李小刚,了小强 (陕西天地地展有限责任公司,陕哥容710054) [摘委]底静压桩地基抵换技术可以对具有湿陷性的弱土层,解决构翼的地基产生沉降变形的向题.结合 忧底钢管静压地基换加固技术原理和陕西某煤矿瓦斯泵房风机地基沉降变形蓝工程地质件,提出了悦底铜 静压花加团设计方亲,介了忧底钢管静压雄成雄施工工艺、质量控制要点,对悦底静压的光入土深度 和压桩力进行了分析.结果表明,抗底钢管静压桂对软弱湿陷性地基加园果良好,成质量拉制要重视施工的 过程制,可以很好地解决款弱湿性土层产生的地是沉降开裂向题. [关键词]加固;钢管静压桩;地基;沉降;托换;应用 [中图分类号]TU753.3 [女故标识码]A[交章编号]1002-8498(2016)16-0053-04 Reinforcement Technology Application of the Foundation Underpinning with the Steel Pipe Bottom Static Pressure Pile Zhang Tinghui Li Xiaogang Ding Xiaoqiang (Shaanxi World Geological Limited Liability Company Xi'an Shaanxi 710054 China) Abstract:Static pressure pile foundation underpinning technology can solve the problem of structure foundation subsidence deformation in bottom collapsibility with soft soil layer.Combining with steel pipe bottom static pressure pile foundation underpinning reinforcement technology principle and shaanxi subgrade settlement deformation of the coal mine gas pump room fan and engineering geological conditions the bottom steel pipe pile underpinning reinforcement design scheme is put forward.This paper introduces the construction technology for steel pipe pile static pressure pile bottom and key points of quality control.Capacity of static pressure pile bottom of pile tip and the force that press a pile are analyzed.The results show that the steel pipe pile bottom collapsibility of soft foundation reinforeement effeet is good ...
施工技术 2011年11月下 96 CONSTRUCTION TECHNOLOGY 第40卷第353期 土钉支护技术在中国科学院中关村 青年公寓工程中的应用 宋艳茹 (中国科学晓电工研究所,北京100190) [摘要]针对中关村青年公寓10 11号楼的具体情况及水文地质条件,综合比较土钉支护与护坡桩支护方案的优 缺点,最终确定采用土钉支护技术.详细介绍了土钉支护设计和分层分段施工及要求,最后对工程边坡水平位移 进行监控测量,结果表明支护效果良好,确保了基坑边坡稳定和周围建筑物的安全性,使基础施工顺利进行,取得 了较好的社会效益和经济效益. [关键词]地下工程;基坑;支护;土钉;预应力;稳定性 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2011)22-0096-03 Application of Soil Nailing Support in Zhongguancun Youth Apartment by Chinese Academy of Sciences Song Yanru Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China) Abstract:Combined with the engineering situation and hydrogeology conditions of the 10th and 11th building of Youth Apartment in Zhongguancun Beijing the soil nailing support is applied by paring with slope protection piles support.The subsection construction and requirement are put forward and the soil nailing design is introduced.The horizontal displacement for engineering slope is monitored.The results show that the support effect is good.The stability and safety are guaranteed and the good social benefit and economic benefit are obtained. Key words:underground;foundation excavation;support;soil nailing;prestressing;stability 1工程概况 ①,黏质粉土填土及①2碎石填土.以下第四纪沉 中国科学院中关村青年公寓10 11号楼位于海积层层顶标高49.44~50.15m 主要为②黏质粉土、 淀区中关村东路80号.拟建建筑物为框架剪力墙 砂质粉土,②,黏质粉土、重粉质黏土.层顶标高 结构,地下室埋深11.25m 筏板基础,槽底标高- 46.38~47.56m主要为③粉质黏土、重粉质黏土, 12.01m 持力层为④粉质黏土、黏质粉土、④1黏质③,黏质粉土、重粉质黏土,③2黏质粉土、砂质粉 粉土、粉质黏土. 土.层顶标高41.95~43.24m主要为④粉质黏土、 本工程属深基础,工程量大,工期紧,土质情况 黏质粉土,④,黏质粉土、粉质黏土,④2...
[关键词]地下工程;基坑;阳角;土钉;冗余度 【中图分类号】TU311.41[文献标识码]A[文章编号]1002-8498(2011)24-0037-06 Study on Redundancy ofFoundation Excavation Convex Location Supported by Soil Nailing Wang Haixu', Cheng Xuesong',Zheng Gang² (1.Departmentof CivilEngineering,TianjinUniversity,Tianjin300072,China; 2.MOE Key Laboratory of Coast Civil Structure Safety,Tianjin300072,China) Abstract;As the convex location of foundation excavation is disadvantageous locations to control its displacement,a special consolidation design is necessary.The redundancy theory on design is introduced for the underground engineering field. The convex location of foundation excavation supported by soil nailing has been consolidated with breast beam and its redundancy has been analyzed. The horizontal displacement of the side-wall, the axial force of soil nailing in original system and redundant system have been respectively analyzed and pared. The work situation of soil nailing with breast beam support system when part of soil nailing failed has been studied. The results prove that consolidating the convex location of excavation supported by soil nailing with breast beam can effectively control the displacement of dangerous location,transfer the redundant load and increase the transferring path. Hence, it can improve the redundancy of support system. Key words:underground; foundation excavation; convex location; soil nailing; redundancy 0引言州塔等[。
2011年4月上 施工技术 第40卷第338期 CONSTRUCTION TECHNOLOGY 41 土钉墙支护结构破裂角的研究 袁洪升 (廊坊师范学院建工学院,河北廊坊065000) [摘要]土钉支护技术已广泛应用于一般的基坑和边坡工程中,规范中对土钉支护结构进行设计时,采取破裂面为 直线,破裂角取45°/2.借助准黏聚力理论,认为土体中设置土钉后,土体的内摩擦角不变而粘聚力变大,土体 的抗剪强度增强.而且在土体中设置土钉后,改变了土体的应力状态,主应力方向发生偏转,土体的滑裂面相应改 变.通过对土钉支护结构中的土体单元进行应力分析,得出了垂直基坑中土钉支护结构滑移面的破裂角为45° 单2-.结果表明土钉剪切滑移面破裂角与土体内摩擦角和七钉倾角有关,均成线性关系. [关键词]土钉墙;准黏聚力;应力莫尔圆;滑移面:破裂角 [中图分类号]TU413.62 [文献标识码]A [文章编号]1002-8498(2011)07-0041-03 Research on Rupture Angle of Soil-nailing Wall Structure Yuan Hongsheng Institute of Civil Engineering and Architecture Langfang Teachers College Langfang.Hebei 065000 China) Abstract:Soil-nailing support technology is applied in general foundation excavation and slope widely. The rupture plane of soil-nailing structure is thought as a straight line and the rupture angle is45°p/2 in standard.Based on theory of pseudo-cohesion the angle of internal friction of soil is invariant while the cohesion is getting bigger and shear strength of soil is getting strengthened after the soil-nailing is fixed in the soil.When the soil-nailing is fixed in the soil the stress state of soil is changed the principal stress direction deflects and the rupture plan changes in response.The formula of ruptured angle 45°/2-in the soil-nailing structure of vertical foundation excavation is derived through the stress analysis of soil unit in the soil-nailing structure.It is indicated that the rupture angle of shear-sliding plane in the soil-nailing structure is linearly related to th...
2012年8月上 施工技术 第41卷第370期 CONSTRUCTION TECHNOLOGY 103 土袋护岸结构施工技术 程龙飞,何运祥 (重庆三峡学院土木工程学院,重庆404000) [摘要]河道边岸第四纪松散堆积土坡,其结构疏松,力学强度低,极易被地表径流带走造成边岸侵蚀.土袋结构 可以加固边岸、增强边坡的抗冲能力.采用合理的种植方式,植被可以在土袋中生长繁衍,重建群落.土袋护坡结 构可同时解决边坡稳定和植被恢复两大难题.主要介绍了土袋护坡结构的基本组成以及施工技术,包括基础施 工,土袋结构施工以及植被的选择与施工. [关键词]岩土工程;土袋;护坡结构;植被恢复;施工技术 [中图分类号]TU751.5 [文献标识码]A[文章编号]1002-8498(2012)15-0103-03 Technology for Slope Protection Using Earth Bags Cheng Longfei He Yunxiang Civil Engineering School of Chongging Three Gorges College Chongging 404000 China) Abstract:Quaternary loose accumulated soil slopes along riverbanks are structurally loose with low mechanical resistance and can be easily washed away.Earth bags can strengthen river banks and prevent the soils from being washed away.Using proper methods plants can grow in the bags and reestablish the ecological environment.So slope protection with earth bags can solve the two problems of slope stability and vegetation restoration.This paper mainly introduces the basic position of this method and its construction technology including foundation construction earth bag construction and selection of vegetation. Key words:geotechnical engineering;soil earth bags;revetments;vegetation restoration;construction 河道边岸第四纪松散堆积土坡,其结构疏松,叠法、加筋堆叠法、防护骨架堆叠法等.普通堆叠 力学强度低,极易被地表径流带走,造成边岸侵蚀.法在施工时,首先按照设计坐标放线,地形复杂的 由于水流所搬运土粒的直径与流速的二次方成正区域宜多设置控制点.将装好填料的第1层土袋码 比,对于松散的堆积土,水流可以轻易地将其搬离 放在地基之上,必须保证土袋与垫层完整接触;控 原地;若在土袋内装入密实的堆积土,袋与袋之间 制好各层的立面倾角,顺次码上各层土袋,并必须 通过连接装置组成一个牢固的护坡结构,可阻止土 检查各层土袋纵向平直度和平面水平度.在同一 颗粒被搬走;...