[关键词]安装;整体吊装;大跨度;网架;桁架;数值模拟 [中图分类号】TU758[文献标识码】A[文章编号]1002-8498(2016)09-0025-03 TrussStructurefor anAdministrativeBuilding LeiKe,Zhang Xiaoyong’,Zhang Yu',Li Yun',Bai Jie',Zhang Qilin²,Zhang Yingying” (1.China Construction Eighth Engineering Co.,Ld.,Shanghai 200240,China; 2. College of Ciril Engineering,Tongi Unitersity,Shanghai200092,China;3.School of Mechanics and Civil Engineering, ChinaUniterstyfMining andTechnology,XuzhouJiangsu22116,China) Abstract:The hoisting construction methods of an administration building with 67m span streamer-shape girds and 56m K-type truss structures are analyzed.Finite element software MIDAS is used to make numerical simulation and displace monitoring on girds and trusses under the whole construction process about synchronous hoisting,not synchronous hoisting,wind load and unload step.The calculation results show that bars stress and hoisting points of girds and truss meet the requirement, which means the integral hoisting construction methods is feasible. Key words installation;integral hoisting; large span; girds; trusses; simulation 空间钢结构整体吊装施工方法包括整体吊升1工程概况 法、整体提升法和整体顶升法。
2012年12月下 施工技术 第41卷第379期 CONSTRUCTION TECHNOLOGY 93 某艺术楼型钢桁架大跨度屋架施工技术 郑永康 (南昌大学建筑工程学院,江西南昌330031) [摘要]介绍了某艺术楼工程45m跨型钢桁架屋架(屋顶标高为29.57m和39.66m)的施工技术和施工方法.其安 装方案是:高空拼装平台滑移粱安装、轨道铺设→纵桁架的吊装、校正→横桁架的安装固定→屋面支撑的安装一→ 屋面次梁的安装→逐步滑移→应力消除→就位卸载.已拼装好的桁架在端头各采用1台7150型履带式起重机吊 装至高空平台上.屋面桁架在高空平台组装完2榻后,即2组桁架组成一个滑移单元,然后逐步累积滑移,如此反 复,直至全部桁架滑移完成. [关键词]钢结构;安装;桁架;大跨空间结构;施工技术 [中图分类号]TU758.1 [文献标识码]A [文章编号]1002-8498(2012)24-0093-03 Construction Technology of Art Building with Large-span Steel Truss Roof Zheng Yongkang School of Architectural Engineering Nanchang University Nanchang Jiangxi 330031 China) Abstract:The construction scheme and technology of a art building with 45m-span steel truss roof roof elevation is 29.57m and 39.66m respectively is given out.Its installation scheme is:firstly assembling the high platform installing the sliding beam and laying the rail.Secondly lifting and checking the longitudinal truss.Thirdly installing and fixing the transverse truss.Fourthly installing the roof support and its secondly beam.Finally sliding the truss by steps eliminating member stress and gradually unloading.Already assembled truss is lift to high platform by two 7150 type crawler cranes in the two ends.Two groups truss are assembled to a slip unit which gradually slides until to finish all truss sliding. Key words:steel structures;installation;truss;large-span spatial structure;construction 1工程概况 某艺术楼工程位于江西省南昌市内,包括: 8 d00~0-及10-~02轴,长63m 跨度 45m.屋架为型钢桁架式,上、下弦和腹杆均为H型 8 限众理 命部分 钢,单棍最大质量为27.7t 其中观众厅(0-0~ ...
2013年5月上 施工技术 第42卷第9期 CONSTRUCTION TECHNOLOCY 67 D0:10.7672/sgjs2013090067 某航天科研厂房工程防微振体系施工技术 黄亮,王良波,詹志雄,林国潮 (中建三局第二建设工程有限责任公司,北京100068) [摘要]某航天光学遥感中心厂房大口径光学镜片研发车间,其试验平台防微振要求较高,并且绝对水平.为满足 工程需要,采用隔振池气浮平台形式的防微振体系.结合工程实际,详细介绍了防微振体系的技术特点、施工工 艺、操作流程、质量及安全控制措施等.通过该防微振体系方案的实施和采用全数字化计算机系统监控,确保了工 程准确度和精确度,取得了良好的施工效果. [关键词]防微振体系;气浮平台;监测;施工技术 [中图分类号]TU476 [文献标识码]A [文章编号]1002-8498(2013)09-0067-03 Construction of Micro-vibration System in Some Aerospace Research Center Building Huang Liang Wang Liangbo Zhan Zhixiong Lin Guochao The Second Construction Co. Ltd.of China Construction Third Engineering Bureau Beijing 100068 China) Abstract:The experimental platform in a space optical remote sensing center has very high demand on the micro-vibration prevention and levelness of the platform.In order to meet the requirements the micro-vibration prevention system with vibration isolation pool and air-spring platform was adopted. Combined with this project the micro-vibration prevention system is introdueed including technieal features construction technology construction process quality and safety control measures ete.With the application of the micro-vibration prevention system and digitalized puter monitoring system the construction precision and accuracy were ensured and good construction effects were obtained. Key words:micro-vibration system;air-spring platform;monitoring;construction 0引言 台(气浮平台)及其上部安装的模拟真空试验罐体, 建筑结构防微振体系是能减弱环境振动影响, 使其完全不接触任何可以传递震动波的固体,从而 保证精密设备、仪器正常运行的建筑结构防微振措 达到防振效果. 施...
2012年11月下 施工技术 第41卷第377期 CONSTRUCTION TECHNOLOGY 95 某综合楼室外地面裂缝原因分析 周与诚,郭跃龙 (北京城建科技促进会,北京100055) [摘要]详细介绍了综合楼及邻近某大厦基坑工程的地质条件、基坑支护设计、土方开挖、锚杆施工和地面裂缝情 况.分析了可能产生该楼地面裂缝的4种原因:地基不均匀、建筑荷载不均匀、某大厦基坑支护结构水平位移和锚 杆施工扰动地基,并得出锚杆施工扰动地基和某大厦基坑支护结构水平位移是地面产生裂缝的主要原因. [关键词]工程质量;裂缝;沉降;监测;原因分析 [中图分类号]TU755;P642.26 [文献标识码]A [文章编号]1002-8498(2012)22-0095-03 、 Cracking Analysis for the Outdoor Floor of Some Complex Building Zhou Yucheng Guo Yuelong Beijing Urban Construction Science Technology Promoting Association Bejing 100055 China) Abstract:The cracking of the outdoor floor of a plex building is introduced.For the analysis of the cracking causes it is introduced in detail the geological conditions support design for foundation excavation earth excavation anchor construction of the plex building and adjacent building.Four possible causes of uneven foundation non-uniform loading from the building horizontal displacement of the foundation excavation support of the building and the disturbance from the anchor were proposed and analyzed.It is concluded that the latter two causes are the main reasons for ground floor cracking. Key words:project quality;crack;settlement;monitoring;reasons analysis 1工程概况 186003000 玩底标高23.95北 1.1综合楼及裂缝概况 裂 基底标高3385 A 1.1.1裂缝平面位置(见图1) 综合楼为新建办公楼,筏板基础,框架剪力墙 办公楼 W 综 合 3 099 结构.2007年4月开工,2008年3月入住.该楼地 5 楼 某大厦基坑 上8层,地下2层,±0.00相当于45.75m 基底标高 纯地下室 (含垫层)33.85m;地下室南北长48.6m 东西宽 D00 ZI 18.6m;地上建筑南北长36.6m 东西宽18.6m;地下 监测点 室南侧两跨12m为纯地下室,地面无建筑物. 图1裂缝位置示意 综合楼一层地面与原办公楼相连,二层有过道 Flg.1 Crac...
2015年8月下 施工技术 第44卷第16期 CONSTRUCTION TECHNOLOGY 19 D0I:10.7672/sgjs2015160019 某综合办公楼火灾后结构安全检测鉴定与加固修复 孟海,李晓渊,裴兴旺2 (1.中冶建筑研究总院有限公司,北京100088;2.西安建筑科技大学土木工程学院,陕西西安710055) [摘要]某综合办公楼2层发生火灾后,结构局部损伤严重.通过对该综合办公楼受火构件的检测与检查,推定火 灾范围和火灾温度场,并根据混凝土构件过火后实际强度检测结果,对结构承载能力进行验算与构件安全性等级 评定.根据鉴定结果对过火区域进行局部加固修复,取得了良好的效果.为同类火灾事故结构安全检测鉴定及加 固修复提供了参考. [关键词]火灾;鉴定;承载力验算;安全性;加固;修复 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2015)16-0019-04 Structural Safety Appraisal and Strengthening Restoration of a Comprehensive Office Building After Fire Meng Hai' Li Xiaoyuan' Pei Xingwang? (1.Central Research Institute of Building and Construction Co.Lad.MCC Group Beijing 100088 China; 2.College of Civil Engineering Xi'an University of Architecture Technology Xi'an Shaanxi 710055 China Abstract:After the fire broke out of the two-story prehensive office building the local structures were damaged seriously.Through the testing and inspection of the prehensive office building fire member fire range and fire temperature field were infered.And according to the result of actual strength testing about concrete member the structure bearing capacity was checked the ponent safety grade was evaluated.Local strengthening and repair of burned area according to the appraisal results was done and good results were achieved.It provides a reference for the appraisal of structural safety and strengthening repair of the similar fire. Key words:fire hazards;appraisal;bearing capacity;safety;strengthening;restoration 由于火灾对建(构)筑物造成的...
2012年6月上 施工技术 第41卷第366期 CONSTRUCTION TECHNOLOGY 99 某站房逆作施工及预应力张拉全过程施工仿真研究 季金文,冯香玲,张开臣2 (1.中国民航机场建设集团公司,北京100101:2.北京市建筑工程研究晚有限责任公司,北京100039) [摘要]某大型站房结构采用了逆作法施工方案,即先施工屋顶钢结构,然后再施工下部轨道梁、落客平台及高架 层结构.为了研究逆作法施工和后期预应力混凝土梁张拉对屋顶预应力钢结构的影响,建立整体模型,按照实际 逆作法施工顺序进行了施工模拟计算,并与一次加载模型结果进行了对比分析,从而确保了结构的成型状态与设 计相符. [关键词]预应力混凝土;逆作法:张拉;仿真 [中围分类号]TU753;TU757 [文献标识码]A [文章编号】1002-8498(2012)11-0099-03 Simulation Study on the Reverse Construction Method and Prestress Tension of the Main Building of a Railroad Station Ji Jinwen' Feng Xiangling' Zhang Kaichen2 (1.China Airport Construction Group Corporation of CAAC.Beijing 100101 China; 2.Bejing Building Construction Research Institute Co.Lad.Bejing 100039 China) Abstract:The main building of a railroad station is built with reverse construction.The steel struetures of roof are constructed first and then the rail beams drop-off platform and overhead floor.In order to investigate the impact on the prestressed steel structures of the roof for the reverse construction and prestress tension of the concrect beams the integral model is built and construction simulation is conducted and the results are pared with those of one time loading simulation the structural shape conforms to design shape. Key words:prestressed concrete;reverse method;tension;simulation 1工程概况 68m 主要采用大跨度预应力索拱及索壳结构,通过 某站房地上共3层,首层为出站层,2层为站台桁架与结构柱连接.典型结构剖面如图1所示. 层(标高12m) 3层为高架候车层(标高21m) 上部 本工程结构体系复杂,下部为铁路桥梁结构, 为钢结构屋顶,总的建筑面积37.8万m2.站房东、 中间为大跨度预应力混凝土框架体系,屋顶为大跨 西落客平台及高架候车层采用大跨度预应力混凝 度预应力钢结构....
施工技术 2015年8月下 16 CONSTRUCTION TECHNOLOGY 第44卷第16期 D0I:10.7672/8gjs2015160016 某砖混结构加固改造与施工 陈道政,李俊丽 (合肥工业大学土木与水利工程学院,安徽合肥230009) [摘要]结合某砖混结构办公用房的改造,讨论用托换梁来承担被拆除部分墙体上原来承受的荷载,托换梁的施工 过程和质量至关重要,通过光纤光栅应变传感器(FBG)对实际改造过程中托换梁的变形进行施工监测,实测变形 结果满足现行规范要求,验证了该加固改造方案的可行性.还讨论了此类结构加固改造荷载变化的原因、计算方 法以及施工过程中的关键技术,总结了砖混结构托换梁施工时应注意的若干技术问题. [关键词]加固;改造;砖混结构;托换梁;施工;监测 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2015)16-0016-03 Strengthening and Retrofitting of Brick-concrete Composite Structure Chen Daozheng Li Junli School of Civil Engineering Hefei University of Technology Hefei Anhui 230009 China) Abstract:In a strengthening and retrofitting of brick-concrete posite structure project underpinning beam was used to undertake the load of removed wall construction process and quality was very important.The deformation of underpinning beam has been monitored by FBG deformation results met the requirements of the current specification verified the feasibility of the strengthening scheme.The reasons for load change calculation method and the key technology in the process of construction were discussed a number of technical issues during the construction were summarized. Key words:strengthening;retrofitting;brick buildings;underpinning beam;construction;monitoring 在砖混结构房屋中,由于使用功能的转化,需因、目的、荷载变化及相应的具体施工技术措施等 要对原建筑物底层进行加固改造.这种加固改造进行分析研究和归纳,这对托换梁施工是至关重 大都涉及原有结构传力体系的变化,所以施工过程要的. 和质量应得到严格的监控.目前,关于托换改造的 1工程概况 研究内容主要包括数值模拟分析、加固改造材料的 中国银行池州分行东浦分理处为6层砖混结 开发以及工程应用方面.国内学者在结构托换改 构,1997年建成.由于使用用途的改变,需拆除③ 造工程应用方面已取得较多的成果....
2010年4月 施工技术 第39卷第4期 CONSTRUCTION TECHNOLOGY 37 某电子芯片厂洁净室华夫板施工技术 王永好,李奇志 (中建二局有限公司深圳分公司,广东深圳518000) 【摘要]由于电子芯片厂房的工艺要求以及对空气洁净度的要求,一般采取新型材料华夫板.华夫板施工质量的 好坏直接影响到洁净房功能的发挥.根据工程实例从模板排版、支撑架搭设及模板安装、华夫板模板安装、密肋梁 钢筋绑扎、混凝土浇筑、支撑架及模板拆除、华夫板清洁等方面详细阐述华夫板的施工工艺和注意事项. [关键词]电子芯片厂房;洁净室:华夫板:施工工艺 【中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2010)04-0037-03 Construction Technology of Waferboard Used in Electronic Chip Plant Clean Room Wang Yonghao Li Qizhi Shenzhen Construction Engineering Company of China Construction Second Engineering Bureau Ltd.Shenzhen Guangdong 518000 China) Abstract:Because of technique and air cleanliness requirement waferboard is adopted in clean room of electronic chip plant.Normal operation of a clean room lies on high construction quality of waferboard. Combining with project example the authors introduce construction method and key points of waferboard from some aspects of slab setting scaffold erecting and formwork installing waferboard installing steel bar binding of rib beam concrete pouring scaffold and formwork dismantling and waferboard cleaning. Key words:electronic chip plant;clean room;waferboard;construction method 为满足防微振、空气循环和防治尘埃粒子附着的地上2~3层④~@轴为洁净度二级(即100级)的洁 需要,有洁净度要求的电子芯片厂房一般采用华夫楼净房,为满足洁净度要求,④~@轴的3层楼板采用了 板.华夫楼板是由华夫模板和钢筋混凝土组成的钢混华夫楼板.④-⑨轴采用高500mm、⑨~@轴采用高 结构.华夫模板(FRP 环氧玻璃钢)是一种新型的复600mm、直径350mm、中心距600mm的圆孔一体成型 合材料,混凝土浇筑后与刚度大的密肋交叉梁系和钢华夫板,铺排完成后孔简纵横方向在同一直线,筒间满 筋混凝土剪力墙一起组成楼层结构防微振系统,底模 布250mm×500(600)mm的暗梁.标准的六孔华夫板 一般不拆除,作为永久性模板,同时取代了顶棚环氧涂 如图2所示.华夫板的施工面积达12000m2. 料(见图1),以...
2017年3月下 施工技术 第46卷第6期 CONSTRUCTION TECHNOLOGY 121 D0I:10.7672/sgj82017060121 某电子洁净厂房华夫板施工技术 苏川,戴超,蔡友刚,杨桃,王丹,赵凯迪,刘五常,戚君 (中建三局集团有限公司成都分公司,四川成都610041) [摘要]华夫楼板可为洁净室提供无尘结构基层,保证通畅的排风除尘通道,并满足其他抗厂房微振的要求.根据 重庆惠科金渝工程实例,在原有施工工艺的基础上进行技术创新、优化改进,发明折叠式华夫板奇氏筒定位模具、 创新奇氏筒防漏浆技术,应用整套重点工序控制技术及“五步验收法”.详细闹述了施工工艺及操作要点. [关键词]洁净厂房;华夫板:定位模具;施工工艺 [中图分类号]TU755 [文献标识码]A [文章编号]1002-8498(2017)06-0121-04 Construction Technology of Wafer Board in a Electronic Clean Workshop Su Chuan Dai Chao Cai Yougang Yang Tao Wang Dan Zhao Kaidi Liu Wuchang Qi Jun Chengdu Branch of China Construction Third Engineering Bureau Co.Ltd.Chengdu Sichuan 610041 China) Abstract:The Wafer board floor can provide clean room to ensure the smooth exhaust dust channel and meet the requirements of other anti plant vibration.According to the Chongqing Huike Jinyu project technological innovation and construction process optimization were made based on the original invention folding Wafer slab Qishi cylinder positioning mould and Qishi slurry leakproof tube technology were invented the key process control technology and“five steps acceptance'"were applied.The construction technology and operation points were introduced in detail. Key words:clean workshop;wafer board;positioning mould;construction 0引言 随着电子信息技术的飞速发展,现代电子工业 生产条件越加苛刻,对洁净厂房提出了新的要求, 除了满足传统的承重、通风、洁净特性外,增加了 “ESD”静电释放、抗微振及复杂的多专业揉和等需 求,要求设备基础抗微振达到VC-C级别.华夫 楼板采用定型排列的奇氏筒,平整铺设于模板上, 图1华夫板示意 孔间设密肋式钢筋暗梁,经混凝土浇捣后,形成平 Fig.1 The wafer board 整的、带有穿通孔洞的钢筋混凝土楼板.华夫楼板 改革传统电子洁净厂房的铝制高架地板,可为洁净 显示...
2014年2月下 施工技术 第43卷第4期 CONSTRUCTION TECHNOLOGY 87 D0:10.7672/sgjs2014040087 某电子厂房防爆墙施工技术 汤才坤,任伟,齐文超,肖伟峰,罗在娥 (中建三局北京公司,北京100089) [摘要]因某工程电子工业厂房生产及工艺需求,厂区内部分厂房或仓库内部均需设置防爆墙.结合工程存在工 期紧、施工难度大及施工要求高等特点,重点介绍了高层防爆墙的施工技术要求及施工工艺,包括材料选择、施工 流程及质量控制措施.通过工程验收,防爆墙施工严格按照施工方案进行,防爆墙体满足设计质量和施工进度 要求. [关键词]安装;防爆;植筋;施工技术 [中图分类号]TU761 [文献标识码]A [文章编号]1002-8498(2014)04-0087-04 Explosionproof Wall Construction on an Electronic Factory Tang Caikun Ren Wei Qi Wenchao Xiao Weifeng Luo Zaie China Construction No.3 Bureau Beijing)Company Beijing 100089 China) Abstract:Because of production and technological requirements of a electronic factory the explosionproof wall was adopted in some factory buildings and storages.Combined with actual conditions with tight schedule great difficulty in construction and high construction requirements construction technologies of explosionproof wall are introduced in detail including material selection construction process and quality control measures.By strictly observing the construction scheme the project acceptance show that the quality and construction schedule of the explosionproof wall can meet the design requirement. Key words:installation;explosionproofing;planting reinforcement;construction 1工程概况 表1防爆墙体分布 第8.5代薄膜晶体管液晶显示器件(TFT-LCD) Table 1 Distribution of explosionproof wall 项目,总建筑面积713885.8m2 位于北京市经济技 设置防爆墙防爆防爆墙 设置防爆墙的 的栋号等级面积/m2 功能房间 术开发区C1 C2 C5 C6地块.因电子工业厂房生 4号建筑化学2级2802.3碱供应间、溶剂供应间、有机备 产及工艺需求,厂区内设置有防爆炸危险的厂房或 品车间 用间、废溶剂提升间、废酸提 仓库,如化学品车间、化学品库等.建筑内部均设 升间 置防爆墙,化学品...
施工技术 2010年8月 34 CONSTRUCTION TECHNOLOGY 第39卷第8期 某玻璃采光顶支承结构设计与施工过程模拟分析 王小安1,郭彦林,兰涛2 (1 清华大学土木水利学院,北京100084;2.西安建筑科技大学土木工程学院,陕西西安710055) 【摘要]在玻璃建筑中,单层索网用于屋面采光顶时很难做到大空间,因为水平布置的单层索网采光顶很难满足大 跨度对刚度的要求.结合北京某建筑玻璃采光顶支承结构方案,提出一种多次杂交的结构支承体系,即单层索网 张弦梁杂交支承结构,以提高单层索网在其面外的刚度,然后对单层索网、张弦梁及杂交整体支承结构体系的设 计指标进行了研究.另外,对本工程施工全过程进行模拟分析,包括张弦梁的安装、单层索网拉索的张拉、玻璃的 安装等. [关键词]玻璃采光顶;单层索网;张弦梁;杂交支承体系;施工过程模拟 [中图分类号]TU767.6 [文献标识码]A[文章编号]1002-8498(2010)08-0034-06 Design and Construction Simulation Analysis of Some Supporting System of Glass Roof Wang Xiaoan' Guo Yanlin' Lan Tao2 (1.School of Civil Engineering Tsinghua University Bejing 100084 China;2.School of Civil Engineering. Xi'an University of Architecture and Technology Xi'an Shaansi 710055 China) Abstract:Monolayer cable net is difficult to achieve large span when used as supporting system in glass roofs as it has very weak stiffness.A new kind of supporting system hybridized by monolayer cable net and beam string structures BSS)is applied in a glass roof of an office building in Beijing to increase its out-plane stiffness.Design specifications of the monolayer cable net the beam string structures and the hybrid supporting system are studied.Besides construction simulations are carried out including beam string structure erection monolayer cable net tensioning and glass setting. Key words:glass roof;monolayer cable net;beam string structure;hybrid supporting system; construction simulation 点支式玻璃采光顶具有造型轻巧简洁、通透性好梁(柱)支承体系、索-张弦梁支承体系等. 等优点,深受建筑师青睐.其核心设计内容是支承结...
2011年3月上 施工技术 第40卷第336期 CONSTRUCTION TECHNOLOGY 69 某现浇楼板模板钢管桁架支撑技术 程显风1,厉明山2,章文菁1 (1.金华职业技术学院建筑工程学院,浙江金华321017;2.展元集团有限公司,浙江金华321000) [摘要]某钢结构厂房为现浇钢筋混凝土楼板,该工程占地面积大,层高高,为节约成本,缩短施工工期,模板支架 采用扣件式钢管桁架支撑技术.给出了模板及其支撑架布置,重点介绍了钢管桁架制作、安装、拆除等施工工艺. 混凝土浇筑期间,通过对整个支撑体系的观测,支撑体系变形量很小,取得了良好的效果. [关词]钢结构厂房;钢筋混凝土楼板;钢管桁架;支撑 [中图分类号]TU731.2 [文献标识码]A [文章编号]1002-8498(2011)05-0069-03 Steel-tube Truss Support Technology for Some Cast-in-situ Floor Formwork Cheng Xianfeng' Li Mingshan2 Zhang Wenjing' (1.The College of Architecture and Cisil Engineering.Jinhua Polytechnic Jinhua Zhejiang 321017 China; 2.Shengyuan Group Co.Lid.Jinhua Zhejiang 321000 China) Abstract:Some steel structure plant applies cast-in-situ reinforced concrete floor.This engineering has large building area high storey height in order to save cost and induce construction period steel-tube truss support technology is adopted for formwork stent.The arrangement of formwork and support are indicated and the fabrication installation and demolition are introduced in detail.It is pointed out that during concrete pouring through detection for the total support system the deformation is small and it gains good effect. Key words:steel structure plant;reinforced concrete floor;steel-tube truss:support 1工程概况 施工工期且成本高.同时2层楼面支设浇筑时,由于 浙江九天空间钢结构有限公司(JTSS)钢结构厂 地面土层松软和施工荷载过大,容易使模板支架体 房工程为地上3层,建筑占地面积7147.45m2 建筑 系发生沉降,影响工程质量和施工安全. 面积21548.3m2 建筑高度16.95m;1层层高8m 2 3 2)方案2设计一种钢管桁架作为楼板模板支 层均为4.4m.结构类型为钢结构,楼(屋)面楼板主撑系统的承力结构,钢管桁架不需支撑到地面或楼 次梁均为工字型钢,主梁跨度和间距分别为900...
[关键词】地下工程;深基坑;围护结构;变形;时空效应 [中图分类号】TU753[文献标识码】A[文章编号】1002-8498(2014)01-0100-04 RetainingStructureDeformationAnalysisofDeepFoundation Excavation by Wet Method Li Jianwang',Yao Sande² (1.SuzhouQuality InspectionCenter ofConstructionEngineering Co.,Lad.,Suzhou,Jiangsu215000,China; 2.Zhejiang Huadong Engineering Safety Technology Co.,Ltd.,Hangzhou,Zhejiang 310014,China) Abstract:The deep foundation excavation by wet method can ensure the excavation face above the circumstances.Based on engineering practice, through the monitoring results, this paper discussed the retainingstructure deformation,dformationlawsstructure safetycontrolstandardsandspace-timeft of the degree of the excavation process. Key words...
施工技术 2013年6月下 32 CONSTRUCTION TECHNOLOGY 第42卷第12期 D0I:10.7672/sgjs2013120032 某渠道工程湿陷性黄土基础处理技术 刘雪峰,程文香,王军辉 (武警水电第二总队第五支队,江苏常州213135) [摘要]南水北调某施工标段全长14km 含明渠13km 其中分布湿陷性黄土渠段6.6km.依据不同渠段湿陷性大 小及其周边环境差异,分别采取强夯、重夯、土挤密桩以及扩挖换填等恰当的工程措施后有效地消除了渠基湿陷 性.对该工程基础处理方法进行了背景分析与技术总结. [关键词]基础;湿陷性黄土;处理 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2013)12-0032-04 Treatment for Collapsibility Loess Ground in Some Channel Engineering Liu Xuefeng Cheng Wenxiang Wang Junhui No.5 Detachment No.2 Hydropower Force of Armed Police Changzhou Jiangsu 213135 China) Abstract:One construction segment of South-to-North water transfer project is 14km in length in which the length of open channel is 13km with 6.6km-length collapsible loess channel.Based on difference of collapsibility and surrounding environment some treatment measures are used to eliminate collapsibility of channel foundation such as dynamic paction heavy rammer soil paction pile and enlarge dig in to fill in.This paper analyzes and summarizes the ground treatment method. Key words:foundations;collapsibility loess;treatment 1工程概况 湿陷的两个内部因素,而压力和水是外部条件.地 南水北调中线干线某施工标段全长14km 其中 基处理的目的则是改善土的性质和结构,减小土的 明渠13km 渠道为梯形断面,渠底宽14.5~19m 渠渗水性、压缩性,消除其湿陷性. 道内坡1:2.0~1:2.75,纵比降1/28000,采用渠坡3技术要求 厚10cm 渠底厚8cm的混凝土衬砌,需进行基础处 3.1强夯 理的湿陷性黄土渠段面积44万m2 划分为13个设 处理范围超出渠道外坡脚线3m 分3遍完成, 计段,长6.6km 占明渠总长的51%.湿陷性中等 前2遍为点夯,第3遍满堂夯,每遍10击;前2遍夯 以上的9个设计段,共5.54km 采用强夯法处理,湿 击能2000kNm 锤重20t 锤底面直径2.5m 夯点 陷性轻微的1个设计段,共0.31km 采用重夯法处间距6.5m 落距10m 第1遍夯点正三角形布置,第 理,距离村镇较近的3个设计段,共0.78km 采用土 2遍夯点在第1遍夯点...
施工技术 2017年3月上 16 CONSTRUCTION TECHNOLOGY 第46卷第5期 D0I:10.7672/sgjs2017050016 某深基坑逆作法地下连续墙施工技术 杨益飞,关群 (合肥工业大学土木与永利工程学院,安徽合肥230009) [摘要]某深基坑工程设计采用“周边逆作、中间主楼顺作”的逆作法施工技术,地下室围护结构采用“两墙合一“ 的地下连续墙,基坑开挖阶段,利用地下各层楼板作为水平支撑.本工程施工场地狭小、地质条件及周边环境复 杂,施工中采取了多项措施来保证槽壁稳定、控制沉降等,以及采用五轴水泥搅拌桩新技术代替三轴水泥搅拌桩、 砂石袋代替接头箱等优化指施.事实表明,施工阶段取得了良好的效果. [关键词]深基坑;逆作法;地下连续墙;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)05-0016-04 Top-down Method of Diaphragm Wall in a Deep Foundation Excavation Yang Yifei.Guan Qun School of Civil Engineering Hefei University of Technology Hefei Anhui 230009 China) Abstract:A deep foundation excavation engineering adopted the reverse construction method of 'bottom- up method for central part and top-down method for peripheral part'in its design.Diaphragm walls was used as its exterior-protected structure and making use of the basement floor layers as horizontal support in the foundation excavation stage.The construction site is narrow and small with plex geological conditions and surrounding environment.Therefore several measures have been taken to ensure the groove wall stability control of the settlement and the use of five-axis cement mixing pile to replace triaxial cement mixing pile sand and gravel bags instead of connector box and other optimization measures.The facts show that it achieved good results. Key words:deep foundation excavation;top-down method;diaphragms;construction 1工程概况 安庆路 本工程位于合肥市传统商业区域,东临花园 一恒达木 街、南临省总工会、北临安庆路及市中心广场,占地 花 约17.59亩(1亩=666.67m2) 规划总建筑面积约 16万m2 ...
2013年8月下 施工技术 第42卷第16期 CONSTRUCTION TECHNOLOGY 105 D0I:10.7672/sgs2013160105 某深基坑止水帷幕失效后的渗漏治理 任斌向1,郭卫萍2 (1.龙元建设集团股份有限公司,上海200434;2.吴基工程建设(苏州)有限公司,江苏苏州215000) [摘要]深基坑止水帷幕是控制地下水涌人的重要措施之一,止水帷幕是否有效,直接关系到整个基坑工程的安 全,一旦止水帷幕出现大规模的渗漏涌漏而失效,势必影响到基坑体系的安全及危害到基坑周边建筑物、地下管 线、道路等市政设施.针对某工程一级深基坑止水帷幕失效后,所进行有针对性的基坑综合治理措施的理论与实 践研究,采用坑外注浆封堵、坑内挂网喷浆封堵、坑外深井降压等治理措施.基坑监测表明,基坑再未出现渗漏现 象,治理效果良好. [关键词]地下工程;深基坑;止水椎幕;涌漏;治理 [中图分类号]TU473.2 [文献标识码]A [文章编号]1002-8498(2013)16-0105-06 Seepage Treatment on Some Deep Foundation Excavation After Waterproof Curtain Failure Ren Binxiang' Guo Weiping (1.Longyuan Construction Group Co.Lad.Shanghai 200434 China; 2.Haoji Engineering Construction Co.Lad.Suzhou Jiangsu 215000 China) Abstract:Waterproof curtain is one of the important measures to prevent groundwater influx and ensure the normal construction of the underground structural space in deep foundation excavation.Its proper working is directly related to the safety of the entire excavation procedure.Massive water influx as a result of waterproof curtain failure will inevitably impair the safety of the foundation excavation and further endanger the surrounding buildings as well as underground pipelines roads and other municipal facilities.After the failure of the waterproof curtain for a deep foundation excavation project theoretical and practical research were performed to the treatment measures including grouting outside the excavation the hanging mesh shotcrete plugging inside the excavation pressure reduction with ...
施工技术 2010年9月 82 CONSTRUCTION TECHNOLOGY 第39卷第9期 某深基坛施工期围护结构变形监测与数值模拟分析 樊胜军,胡长明,刘振江2 (1.西容建筑科技大学土木工程学院,陕西西容710055: 2.湛州市第二建筑安装工程有限公司,浙注温州325000) [接]以菜黄土地区地季深基悦工程为研究背墨,分容了诚工程周边环境、结构形式皮拟建场区的地质条 件:根搭工程点分为4个典型工况,并根搭客个工况结来时测得的基悦园护水平位传果,分析了是悦在开 挖过程中围护桂的变形规律:通过建立三维棋型对基悦开挖过程中围护变形进行了数模拟,并将计算传果 实测传果进行对比分析,最得到基流整个国护构的变形规律及土方开挖的影响范围. [关键词]地铁季:深基悦:围护变形:数值模 [中分类导]TU753.1 [立献标识]A [支章编号]1002-8498(2010)09-0082-03 Deformation Monitoring and Numerical Analysis of a Deep Foundation Excavation Support in Construction Fan Shengjun' Hu Changming' Liu Zhenjiang (1.Civil Engineering College Xi'an Unirersity of Architecture and Technology Xi'an Shaanxi 710055 China: 2.Wenzhou the Second Construction and Installation Engineering Co.Ltd.Wenzhou Zhejiang 325000 China) Abstract:Based on some deep foundation excavation of subway station in a loess region the authors introduce surrounding conditions structure type and the geological conditions of the proposed field. According to the engineering characteristics the project is divided into four typieal operating conditions. Horizontal displacement of supporting pile is measured in the end of each condition.Moreover supporting pile deformation rules are analyzed during excavation.Through the establishment of three-dimensional model the supporting pile deformation is simulated and the results are pared with experimental results.Eventually the deformation of deep foundation excavation support and influence sphere of earth excavation are gained. Key words:subwa...
施工技术 2012年4月下 52 CONSTRUCTION TECHNOLOGY 第41卷第363期 某深基坑支撑环梁拆除技术 周广存,高哲,姜雪松,杨玉桥,张秀川 (中建一局集团建设发展有限公,北京100102) [摘要]某深基坑共设3道钢筋混凝土水平支律,支撑拆除方量约5000m3.经分析,第2 3道环梁位于基坑中下 部,采用爆碳拆除方式:第1道环梁距地面0.7且基坑南侧有建筑物,采用机械拆除施工.详细介绍了燥破拆除 和机械拆除设计原则和施工工艺.最后,对3种常用的基坑支撑环梁拆除方式—一爆破拆除、机械拆除和人工拆 除的施工工艺和经济指标进行对比和分析. [关键词】深基坑:支撑:环梁;拆除:爆破:施工技术 [中图分类号]TU245 [文献标识码】A 【文章编号]1002-8498(2012)08-0052-04 Demolition Techniques of Supports Ring Beam for Some Deep Foundation Excavation Zhou Guangcun Gao Zhe Jiang Xuesong Yang Yuqiao Zhang Xiuchuan China Construction First Building(Group)Co.Lad.Bejing 100102 China) Abstract:Some deep foundation excavation is designed with 3 horizontal concrete supports and the demolition quantity is 5 000m.According to the analysis the second and the third ring beam locates at middle or lower part of the foundation excavation so the blasting demotion is selected.However the first ring beam is only 0.7m below the ground and there are buildings at south of the foundation excavation thus the mechanical demolition method is adopled.Finally the construction technology and economical indexes of three normal demolition methods are pared and analyzed including blasting demolition mechanical demolition and manual demolition. Key words:deep foundation excavation;supports;ring beam:demolition;blasting:construction 深基坑支撑环梁作为临时性结构,在施工结构 表1支撑环梁设计 主体时需要对其进行拆除.爆破拆除、机械拆除和 Table 1 Design of supports ring beam 人工拆除是目前常用的3种深基坑支撑环梁拆除技 位置 编号 名称 藏面尺寸/ mn x mum) 术.在实际施工过程中,需要根据不同施工环境选 第1道支撑 CHI 支律 800×800 择相应...