2016年8月上 施工技术 第45卷第15期 CONSTRUCTION TECHNOLOGY 99 D0I:10.7672/8js2016150099 软土地层深基坛隆起变形规律及其对周围建筑物 的影响* 杜磊，王育平 (山东科技大学矿业安全学院，山东岛266590) [摘委]以北京菜地区深基工程为背景，采用工程经翰法和有限元拟种方法，对施工过程中成的底隆 起、建物差异沉障进行结算，分别指出了基悦最大变形和建物相对危险源，分析了2种方法的优点，示 了2种方法对工程预估的现实意义.出了基悦开挖过程中由地的沉降方程以及悦底隆起与开挖深度之间 的指敷关季. [美键词]地下工程：深基悦：隆起：变形；差异沉降：有限元分析 [中图分类号]TU753[献标识码]A[支章编导]1002-8498(2016)15-0099-05 Soft Soil Foundation Excavation Uplift Deformation Law and Its Impact on Surrounding Buildings Du Lei Wang Yuping College of Mining and Safety Engineering Shandong University of Science and Technology Qingdao Shandong 266590 China) Abstract:According to the engineering practice in Beijing engineering experience and finite element simulation are applied to estimate the bottom uplift the building differential settlement caused by the construction process.It respectively indicated maximum deformation values of foundation excavation and the relative hazard of building the advantages and disadvantages of the two methods are analyzed revealing the significance of their project estimates.It made the equation of free surface settlement exponential relationship between bottom uplift and excavation depth. Key words:underground;deep foundation excavation;uplift;deformation;differential settlement;finite element analysis 0引言 控制施工灾害具有重要的意义. 随着城市化进程的不断加快，地下空间的开发 目前，图内外学者已从理论、数值伤真和现场 与利用成为城市建设的主要方向.城市建设中遇监测角度对基坑隆起变形规律及其对周围环境的 到越来越多的深基坑工程，基坑开挖大多在城市影响展开研究，如孙钓根据模型试验与实测数据 繁华地段，临近道路、既有建筑物等地面结构及地 的对比分析，提出了判断坑底失稳的依据；刘燕[3] 铁、腿道等地下工程川.基坑开挖，打破...
施工技术 2014年6月上 112 CONSTRUCTION TECHNOLOGY 第43卷第11期 D0I:10.7672/5j52014110112 软土地基堆载预压沉降特性及智能化预测研究* 余景良，吕言新2，李海波2 (1.广州航海学院航务工程系，广东广州510725； 2.中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北武汉430071) [摘要]针对软土地基含水量高、压缩性高及抗剪强度低的特点，采用理论分析与数值模拟相结合的方法，从力学 机理探讨了堆载效应与软土地基沉降的关系.软件FLA3D数值模拟表明，随着地基深度的增加，地基的竖向沉 降不断减少，并且其递减幅度随深度的增加而增大，最大水平向位移发生在堆载物边缘以下的深部地基土中；随着 水平距离的增加，地基竖向沉降也不断减少，并且其减少的幅度较均匀，当水平距离增加到一定值，其沉降值维持 在某一个恒定值.以现场监测资料为基础构建动态模糊神经网络，获得了准确度和可靠度较高的预测结果，表明 动态模糊神经网络具有较强的网络稳定性和泛化能力. [关键词]地基；堆载预压；沉降；软土；预测；数值模拟 [中图分类号]TU472.33 [文献标识码]A [文章编号]1002-8498(2014)11-0112-03 Study on Settlement Characteristics and Intelligent Forecasting with Surcharge Preloading in Soft Soil Foundation Yu Jingliang' LǔYanxin㎡，Li Haibo2 (1.Department of Narigational Fairs Engineering Guangzhou Maritime Institute Guangzhou Guangdong 510725 China; 2.State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan Hubei 430071.China) Abstract:Based on high water content high pressibility and low shear strength characteristics in soft soil foundation bined with theoretical analysis and numerical simulation this paper introduces the relationship between surcharge effect and settlement in mechanical mechanism respect in soft soil foundation.Software FLAC3D numerical simulation shows that the vertical foundation settlement decreases gradually with the foundation depth increased and the decreasing rate increases with depth increased.The maximum horizontal di...
2017年1月上 施工技术 第46卷第1期 CONSTRUCTION TECHNOLOGY 13 D0I:10.7672/sgjs2017010013 软土地基双排钢板桩围堰稳定性分析及应用 徐顺平，戴小松，张安政，谢学彬，严浩明 (中建三局投资发展有限公司，湖北武汉430076) [摘要]双排钢板柱围堰由于结构不设内支撑，在软土地基中变形量大，易发生倾覆.基于东湖通道围堰工程实 例，对双排钢板桩围堰“前短后长”和“前长后短”两种结构形式变形特性分析和探讨，分析软土地基双排钢板柱围 堰在5种不同抽水速率工况下变形及受力情况.结果表明，围堰在抽水阶段，“前长后短”结构形式位移变形小于 “前短后长”.结合监测数据及专家意见，提出0.2m/d抽水速率指标以及三级变形监测预警控制值，确保围堰 安全. [关键词]地基；软土；钢板桩围堰；稳定性；变形；监测 [中图分类号]TU443 [文献标识码]A [文章编号]1002-8498(2017)01-0013-05 Analysis and Application of Double Row Steel Sheet Pile Cofferdam Stability on Soft Soil Foundation Xu Shunping Dai Xiaosong Zhang Anzheng Xie Xuebin Yan Haoming Investment Development Corporation of CCTEB.Wuhan Hubei 430076 China) Abstract:Because of the double row steel sheet pile structure without support it is summarized as large deformation in soft soil foundation and easy to overturn.Based on Eastlake Tunnel cofferdam engineering this paper discussed two kinds of structure type deformation characteristics as 'short after long'and 'long after short'of the double row steel sheet pile cofferdam.Using elastic plastic constitutive model the authors make analysis on soft soil foundation of double row steel sheet pile cofferdam in five different pumping rate under the condition of deformation and stress.The results show that cofferdam in the pumping stage ‘before long short'structure type displacement deformation is smaller than the‘long and short in front'.Combined with the monitoring data and expert opinion the 0.2m/d pumping rate index and the thre...
施工技术 2011年5月下 52 CONSTRUCTION TECHNOLOGY 第40卷第341期 软土地区超大深基坑中心岛支护方案设计与施工 周予启，刘卫未 (中建一局集团建设发展有限公司，北京100102) [摘要]在超大面积深基坑工程中，中心岛设计方法具有明显优势，不仅可以降低工程造价，还可以提高中部主体 结构的施工进度.以天津嘉里中心工程超大深基坑工程为背景，着重介绍了中心岛方案设计需考虑的因素及工况 流程，并结合该工程实施过程中出现的同题进行详细分析.采用FLAC数值模拟软件对中心岛支护方案基坑变形 进行分析，并结合工程实际监测数据，对该设计方法反压土台宽度进行探讨. 【关键词]超大深基坑：中心岛法；数值模拟；反压土台宽度 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2011)10-0052-03 Design of Central-island Method and Its Construction for Super Large Deep Foundation Excavation in Soft Soil Area Zhou Yuqi Liu Weiwei China Construction First Dinision Group Construction Development Co.Led.Beijing 100102 China) Abstract:Central-island method has very obvious advantages in the super large deep foundation excavation engineering.The project cost and construction period are saved by using the new method. Application of central-island method in foundation excavation of Tianjin Kerry Center is introduced emphatically the construction process and the factors which must be taking into account in the design of central-island scheme.The problems appearing in the implementation process is discussed in detail. Using FLAC numerical simulation software deformation of central-island scheme was analyzed. According to the results of numerical simulation and the foundation excavation monitoring data width of passive soil slop is presented. Key words:super large deep foundation excavation;central-island method;numerical simulation;width of passive soil slop 天津嘉里中心工程分为1，Ⅱ期工程，期工程和地下连续墙两种形式.地下连续墙造价较高，多 由3栋公寓、1栋酒店和整体地下车库组成.面积采用二墙合一形式，即同时作为基坑开挖的围护体 73011m2 边长均超过200m 开挖深度16.45m 公和正式结构的地下室外墙.二墙合一的地下连续墙 寓塔楼开挖深度17.825m 电梯井坑开挖深度达设计除应满足基坑支护安全要求外，还需考虑主体 23.275m 酒店塔楼区开挖深度达17.025m 电梯并阶段地下室外墙所承受的荷载及各楼层的准确标高 坑开挖深度达22.025m.场区内地下水位埋深较（以提前预埋钢筋连接器），因此对主体结构地下室 浅，约在自然地面以下2m 土层分布以粉质黏土层 设计的进度有一定要求.本工程中在基坑支护设计 为主，局部夹粉砂层. 阶段，地下室主体结构设计尚未完成，在工期上不满 1基坑支护设计考虑因素 足二墙合一的要求，因此基坑围护结构选用钻孔灌 1.1图护结构选型 注桩止水帷幕的形式.钻孔灌注桩为 天津地区地下水位较高，土质较软，基坑工程尤 1000mm@1200mm 止水幕采用b850mm@ 其是市区基坑工程，在进行基坑开挖时均要求隔断600mm三轴水泥土搅拌桩. 地下水.围护结构主要采用钻孔灌注桩止水椎幕1.2支护体系...
[关键词】地下工程；高层建筑；深基坑：软土地区；沉降；文物建筑 [中图分类号]TU753[文献标识码】A[文章编号]1002-8498(2015）01-0028-04 InfluenceonCultureBuildingSettlementofDeepFoundation Excavation inSoft Area Gong Jiangfei，Zhou Xiaoming,Zhang Ji,Liu Zhenji,Li Ning (China State Construction Engineering Co.，Ltd.，Beijing 100037,China) Abstract:This paper summarized the setlement law of culture building based on monitoring data in No. 9 building of Jinwan Plaza in Tianjin, analyzed the reasons of settlement. The main factors are soil excavation，foundation excavation dewatering and construction disturbance. Then this paper introduced control measures in this project and gave suggestions for the similar project. Key words:underground; tall buildings; deep foundation excavation; soft soil area; settlement; culture building 0引言（不含顶部造型）及4层裙房组成，建筑物下设置4 随着城市人口的不断增长和土地价值的提高，层地下室，且地下室连为一体，地下1层层高6.8m， 人类生存空间不断向空中延伸，因而高层和超高层地下2~4层层高4.5m，地下部分功能为酒店配套 建筑得到了迅猛发展，建筑高度越来越高，同时基用房和车库等。
2011年5月上 施工技术 第40卷第340期 CONSTRUCTION TECHNOLOGY 软土地区深基坑工程存在的变形 与稳定问题及其控制 —基坑施工全过程的稳定问题 郑刚，宾华港2 (1.天津大学建筑工程学隆，天津300072：2.天津市建设交通管理委员会，天津300051) [要]对基悦施工全边程可能产生的穆定向题进了分析，出了复杂深卷悦的穆定向题直性.根基悦 穆的接引发因素划分为基抗连护传构施工引发的穆定向题、悦内外土体形成滑动面引发的穆定向题、竖向直拖 传构（排裤、地下连镇墙等）破坏引发的基悦稳定向题、水平连撑（猫杆）系说破坏引起的基悦穆定向题、水平支撑 的竖向支承系说（童柱）破环引发的稳定向题和地下水引发的稳定向题6类，对具关稳机理、危害、程进行了 分析.最后，提出了基悦支护结体系的元余度设计概会和分类. [关键词]土：深基悦：支护开挖：移定破坏：余度 [中便分类导]TU447 [文献标识好]A [文章编号]10028498(2011)09-0001-06 Stability and Deformation Problems During Deep Foundation Excavation in Soft Soil Area and Their Control Measures -Stability Problems During the Whole Process of Excavation Construction Zheng Gang' Dou Huagang (1.School of Ciril Engineering Tianjin University Tianjin 300072 China: 2.Tianjin Urban Construction Communications Commission Tianjin 300051 China) Abstract:The stability problem must be carefully examined to minimize the impact of excavation on surroundings when deep excavation urban area is surrounded by various buildings roads buried pipelines and underground tunnels.The stability problems during the whole process of excavation are discussed and the plex of stability failure of braced deep excavation is illustrated.Based on the element whose failure directly leads to the stability failure of brace excavation the stability problems of braced deep excavation is classified into 6 categories namely stability problem induces by construction of retaining wall slip surface formed in ground stability problem due to the failure of retain...
2011年4月上 施工技术 第40卷第338期 CONSTRUCTION TECHNOLOGY 5 软土地区深基坑工程存在的变形 与稳定问题及其控制 一基坑施工全过程可产生的变形 李光照，郑刚2 (1.天津滨海新区建设投资集团有限公司，天津300450；2.天津大学建筑工程学晓，天津300072) [摘要]随着我国城市建设的发展，软土地区的深基坑工程设计与施工面临越来越复杂的环境条件，基坑施工对环 境影响的控制要求也越来越严格，基坑工程已进人已变形控制设计与施工为主的时代.结合天津软土地区的工程 实践及国内其他地区经验，将基坑工程的全过程划分为基坑支护结构施工、基坑降水、基坑开挖、基坑使用、拆除支 撑、地下水位恢复等6个阶段，分析了施工全过程各个阶段可能产生的稳定与变形机理、危害及控制方法. [关键词]软土：基坑工程；降水；变形：稳定 [中图分类号]TU447 [文献标识码]A[文章编号]1002-8498(2011)07-0005-05 Stability and Deformation Problems During Deep Foundation Excavation in Soft Soil Area and Their Control Measures —Deformation in Process of Foundation Excavation Li Guangzhao' Zheng Gang2 (1.Tianjin Binhai New Area Construction Investment Group Co.Ltd.Tianjin 300450 China; 2.School of Cicil Engineering Tianjin University Tianjin 300072 China) Abstract:With the development of urban construction in China environment conditions of design and construction of deep foundation excavation in soft soil is getting more plex and control requirements for influence of foundation excavation on environment is getting more strict.Based on engineering practice process of excavation construction is divided into six stages as construction of retaining structures foundation excavation dewatering excavation service stage demolition of support and groundwater level recovery.Stability and deformation mechanism and harmfulness and countermeasures in each stage are analyzed. Key words:soft soil;foundation excavation;dewatering:deformation;stability 1软土地区基坑工程的特点 ~40m 其中上海地铁四号线修复工...
【关键词】软土；基坑；变形；水平位移；拉应变 [中图分类号】TU447[文献标识码】A [文章编号]1002-8498（2011)08-0008-07 Stability andDeformationProblemsDuringDeepFoundation Excavation inSoftSoil Areaand Their Control Measures -AllowableDeformationControlandUnconventionalDeformation Zheng Gang'， Jiao Ying², Li Zhu² (1.School of CisilEngineering,TianjinUniersty,Tianjin300072,China; 2.Tianjin Urban Infrastructure Construction & Investment Co.，Lad.，Tianjin 300050,China) Abstract:It is being more and more diffcult to determinate the allowable deformation due to urban area deep foundation excavation when it is surrounded by various buildings, roads, buried pipelines and underground tunnels. According to the current codes, the maximum displacement of retaining wall is the main index to be controlled during design and construction stage. The indexes of deformation of retaining structure and surounding buildings of domestic and intermational codes are pared and discussed. Some issues that may affect the deformation of ground behind retaining wall, building and other services are classified.When there are nearby buildings or services that are sensitive to deformation, the allowable maximum deformation of retaining wall is suggested to be determined by detail analysis instead of determined simply according to the current codes. Key words;soft soil; foundation excavation; deformation; horizontal displacement; tensile strain 1我国基坑变形控制指标 坏，影响其正常的使用功能，并造成一定的社会影 正如作者所指出，软土地区深基坑的施工往响。
【关键词］地下工程；深基坑；支护；软土；施工技术；监测 [中图分类号】TU753【文献标识码】A[文章编号11002-8498（2012）19-0041-04
Comprehensive Support Technology in Different Stage of Deep Foundation Excavation in Soft Soil Area Jiang Qingguo, Chen Lintao, Zhang Xiuxian, Peng Haifeng ( Tianjin No. 20 Metallurgical Construction Co. ,Ltd. ,Tianjin 300301 ,China)
Abstract: According to the safety requirement of a deep foundation excavation engineering in coastal soft soil area, different support methods were adopted in different stages of construction. Specifically, row of bored piles with water proof curtain and cement mixing pile submerged pier, cement mixing pile retaining wall and row of bored piles with steel supports have been adopted. Site monitoring data shows that by proper arrangement of construction process, such as structural construction, well-points dewatering, and soil excavation, the supporting structure was maintained stable and the foundation excavation safety was ensured. Key words:underground ; deep foundation excavation; supports; soft soil; construction ; monitoring
1~ 工程概况厂房（檐口标高47m）、检验楼、电气室（4层框架结 天津鞍钢天铁薄板有限公司位于天津空港经构）、100t应急水塔（钢筋混凝土倒锥形水柜，水柜 济区，一期工程于2008年建成投产，二期工程包括标高57.000m）等建筑物。
[关键词】软土地区；盾构：土体位移；扰动 [中图分类号]U455.43 [文献标识码]A [文章编号〕1002-8498(2015)24-0086-04 ExperimentalStudyonDisturbanceofSoilCausedbyShield TunnelingintheDeepPositionofSoftSoilRegion Liu Shujia',Bai Tinghui.²,Liao Shaoming',Chen Lisheng²,Zhao Guoqiang (1.Department of Geotechnical Engineering，Tongji Unitersity,Shanghai 200092,China; 2.Shanghai Shentong Metro Co.，Ltd. ,Shanghai 201100,China; 3.Shanghai No.2 Municipal Engineering Co. ,Lad.,Shanghai 200065,China) Abstract:A whole section measurement is installed to measure the displacement of soil disturbance in deep soft soil region of Shanghai. Monitoring and recording analysis is carried out aiming at soil disturbance characteristics in shield excavation.According to the parative study of measured data,it can be concluded that the range of soil disturbance caused by shield tunneling is 2D in cross-sectional direction, 1D in vertical-sectional direction. Additionally， the displacement of the soil disturbing in shield tail prolapse stage is larger than twice as the one in shield tail digging phase. Key words:soft soil region;shields;displacement;disturbance 0引言 比以往更大的困难。
[关键词】基坑；软土地区；桩；围护桩；流土；变形 [中图分类号】TU447 [文献标识码】A [文章编号〕1002-8498（2014)01-0091-05 AnalysisofInfluenceoftheSoilLossBetweenPilesontheDeformation Characteristics ofFoundationExcavationinSoftSoil Li Zhiwei (Fujian Academy of Building Research，Fuzhou,Fujian 350025,China) Abstract;In soft soil, the soil loss between the bracing piles has a more significant impact on the surrounding environment.Based on engineering practice,the influence of the soil loss between piles on the deformation characteristics of foundation excavation is analyzed.The influence of the soil loss shows significant spatial effect,that the influence degree on the positive corner is significantly larger than the negative corner. The soil loss will not only affect the displacement of the soil above the excavation section，but also affect the displacement of the soil below the excavation section within a certain depth range. The soil between the front and rear piles of double-row piles is affected’ by the soil loss, but the soil behind the rear piles is less affected. Key words:foundation excavation; soft soil; piles; bracing piles;soil loss;deformation 0引言 及渗水等现象。
施工技术 2017年2月下 100 CONSTRUCTION TECHNOLOGY 第46卷第4期 D0I:10.7672/sgj82017040100 软土地区某深基坑绿色施工技术* 钟铮 (上海建工集团股份有限公司，上海201114) [摘要]上海浦江镇某商办楼项目位于深厚淤泥质软土地区，地下水资源丰富，且邻近已入住的居民小区，施工场 地狭小.为减少基坑施工对周边环境的不利影响，降低施工过程中产生的污染，项目实施中采取了多项绿色技术 措施，包括地下水资源保护与利用、集约化栈桥设计和多种环保措施，取得了较好的经济效益和社会效益，实现了 绿色施工. [关键词]基坑工程；绿色施工；环境保护；柱；施工技术 [中图分类号]TU443 [文献标识码]A [文章编号]1002-8498(2017)04-0100-04 Green Construction of a Deep Foundation Excavation in Soft-soil Areas Zhong Zheng (Shanghai Construction Group Co.Lid.Shanghai 201114 China) Abstract:A mercial building project in Pujiang Town of Shanghai is located in deep soft-soil area where groundwater resources is abundant and is near a residential area and the work space is narrow. In order to reduce the bad influence of foundation excavation construction on environment multiple green techniques are adopted including the protection and utilization of groundwater resources the intensive design of work trestle and many environmental protection measures realizing favorable economic and social benefits and green construction is realized. Key words:foundation excavation;green construction;environmental protection;piles;construction 近年来，随着上海城市建设和改造的快速发1工程概况 展，为满足市民生活日益增长的出行、轨道交通、商 浦江镇某商办楼项目位于上海市闵行区浦江 业、停车等功能需要，结合城市建设改造开发大型镇125-2地块东侧，占地面积约1.4万m2 包括4幢 地下空间已成为一种必然，也涌现出大量的深基坑 地上6层单体，地下室为整体连通的地下2层车库 工程.这些深基坑工程往往邻近既有建筑物，地下 和设备用房，基坑普遍挖深9.8m 尺寸约为260m× 管网密集，人流交通繁忙，施工场地狭小，环境保护 40m 总体呈南北狭长形布置.基坑采用钻孔灌注 要求高.但深基坑开挖过程涉及对天然地基及既 桩排桩结合外侧三轴水泥土搅拌桩止水帷幕作为 有建筑物地基的扰动、地下水形态的改变，极易对 围护结构，坑内竖向设置2道...
2011年5月下 施工技术 第40卷第341期 CONSTRUCTION TECHNOLOGY 61 软土地区某深基坑支护失稳分析 吴1，肖备2，谢建民1 (1.新江东阳第三建筑工程有限公司，新江东阳322100；2.浙江广厦建设取业技术学院建筑 工程学院，浙江东附322100) 【摘要]浙江省某花园工程因基坑支护设计、建设方变更要求和地质条件复杂等原因，造成基坑变形过大.首先对 基坑进行支护，接着对深层土体水平位移、基坑外道路及周边建筑物沉降变形、支撑轴力进行监测，对事故发生的 设计方、建设方、施工方原因进行分析，根据以上内容提出相应的一系列处理施，总结出深基坑开挖时注意事项， 引以为戒. [关键词]深基坑支护；软土地区；失稳分析 [中图分类号]TU753.1 [文献标识码]A 【文章编号]1002-8498(2011)10-0061-03 Stability Analysis of Deep Foundation Excavation Support in Soft Soil Area Wu Yao' Xiao Bei2 Xie Jianmin' (1.Zhejiang Dongyang Third Construction Engineering Co. Lid.Dongyang Zhejiang 322100 China; 2.School of Cisil Engineering and Architecture Zhejiang Guangsha College Dongyang Zhejiang 322100 China) Abstract:For the reasons of support design of foundation excavation changing requirements of construction pany and plex geological conditions the deformations of foundation excavation of a garden project in Zhejiang province are very large.After the foundation excavation is supported the monitoring is done for the level displacements of deep soil settlements at the surrounding buildings and roads supporting axial force.After the analysis corresponding measures are used to reduce the deformations.The attentions of foundation excavation are also concluded. Key words:deep foundation excavation support;soft soil area;instability analysis 1工程概况 条件复杂等原因，造成基坑变形过大. 浙江省某开发区花园工程为高层建筑，裙楼地 2基坑支护设计 下室1层，建筑面积97655m2 29~33层高层建筑 由于基坑北侧为学校塑胶跑道，离基坑很近，属 共4幢，西北面邻近实验中学操场，距基坑5~8m 北面为学校办公楼，东、西、南面均为城市主干道，距 支护重点.图b中开挖深度为7.75m ...
施工技术 2014年8月下 44 CONSTRUCTION TECHNOLOGY 第43卷第16期 D01:10.7672/sjs2014160044 软土地区某多层房屋纠倾加固技术* 戴占彪1，付素娟2，李旭光，李光宏3 (1.河北建研科技有限公司，河北石家庄050021；2.河北省建筑科学研究院， 河北石家庄050021；3.河北工业大学土木工程学院，天津300401) [摘要]综合上部结构、桩基础、地基土体3方面对云南某住宅楼的倾斜原因进行分析.根据下部土体及建筑结构 形式，对建筑物采用锚杆静压桩止倾加固，采用截桩迫降的处理方法对该建筑物进行纠倾施工.工程实践表明，本 工程截桩迫降法纠倾速度快、沉降稳定易控制且能保证整幢房屋均匀地回倾：在截桩结束封柱后，沉降能迅速稳 定，工后沉降较小. [关键词]混凝土结构；纠倾：锚杆静压柱：地基加固 [中图分类号]TU746.3 [文献标识码]A [文章编号]1002-8498(2014)16-0044-04 Rectification and Strengthening of a Multi-storey Houses on Soft Soil Area Dai Zhanbiao Fu Sujuan2 Li Xuguang' Li Guanghong (1.Hebei Building Research Engineering Co.Lad.Shijiazhuang Hebei 050021 China; 2.Hebei Academy of Building Research Shijiazhuang Hebei 050021 China; 3.School of Civil Engineering Hebei University of Technology Tianjin 300401 China) Abstract:This paper analyzes the reasons of a tilted residential building in Yunnan through the upper structure pile foundation and soil foundation.According to the lower part of the soil and structural form anchor piles are used for the end of dumping and reinforced buildings and the method of cut pile is used for rectification of the buildings.The project shows that the method of cut pile has the characteristics of fast rectification stable and easy to control settlement and ensures the whole building uniformly dumping back.When the sealing of the eut piles is finished building settlement can quickly stabilize with small post-settlement. Key words:concrete buildings;rectification;anchor piles;consoli...
【关键词]盾构；隧道；地基；沉降；数值模拟 [中图分类号】TU753；U455 【文献标识码】A [文章编号】1002-8498(2014)10-0118-05 Research on theImpactonShallowFoundationBuildings by LargeDiameterShield Tunnel ConstructioninSoftSoilArea Luo Jun'， Jin Zhenshan²，Du Xiaowei (1.Civil and Environmental Engineering School，University of Science and Technology， Beijing 100083,China;2.Jinbin Railway Co.，Ld.,Tianjin 300456,China) Abstract:Based on the construction project of Beijing-Tianjin inter-city extending line，the security influence of shield tunneling on adjacent buildings and the finite difference software Midas/GTS has been used to simulate the Changhong Mall which is just beside the tunnel. Uneven settlement and deformation characteristics of the building base have been analyzed. Finally， the influence rules of shield tunnelling on adjacent shallow foundation buildings has been summarized， which could provide beneficial reference and basis to shield tunnelling and building reinforcement. Key words;shielding; tunneling; foundation; setlement; simulation 阜150 着天津市地铁建设的快速发展，盾构法施工必然成 近年来，合理规划、设计、建设地铁是解决城市 为城市地铁建设的重要手段，其中穿越河流、建筑 交通的一条有效途径。
施工技术 2014年10月上 36 CONSTRUCTION TECHNOLOGY 第43卷第19期 D0I:10.7672/5gjs2014190036 软土地区城市中心区深基坑土方开挖施工技术 王龙，李师尧2，刘卫未1，戚兵，卜楠楠 (1.中建一局集团建设发展有限公司，北京100102；2.中铁十六局集团第二工程有限公司，北京100000) [摘要]通过对比分析，阐述了在软土地区城市中心区深基坑多道支撑下，土方开挖过程中选择不同的施工技术对 挖土进程、经济效益的影响有所不同.针对工程特点，创造性地采用钢板桩作为出土坡道的临时挡土墙，并利用对 撑与出土坡道形成有效出土通道的方式进行土方开挖，可达到快速、安全、经济的效果.同时首道支撑兼作堆料平 台，充分缓解了城市中心区现场用地紧张的现状，降低了工程造价. [关键词]地下工程；深基坑；软土；土方开挖；钢板桩；施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2014)19-0036-03 Excavation Technology of Urban Center Deep Foundation Excavation in Soft Soil Wang Long' Li Shiyao2 Liu Weiwei' Qi Bing' Bu Nannan' (1.China Construction First Division Construction Development Co.Lad.Beijing 100102 China; 2.The 2nd Engineering Co. Lid.of China Railcay 16th Construction Bureau Ltd.Beijing 100000 China) Abstract:Based on parison analysis this paper introduced the effect of different excavation methods of deep foundation excavation in soft soil with supports.According to the engineering characteristics steel sheet pile was used as temporary retaining wall brace and excavated way were used as affective passway for excavation.The first supports was used as stacking platform which can solve the problem of shortage of land and reduce the cost. Key words:underground;deep foundation excavation;soft soil;excavation;steel sheet pile;construction 1工程概况 2基坑支护及水平支撑体系设计 某工程位于天津市中心地区，施工场地狭小，场 本工程基坑支护体系为地下连续墙高压旋 地北侧地下室外墙距离滨江道仅3.40m;南侧地下室 喷桩止水，内置3道钢筋混凝土支撑，支撑体系布置 外墙距离交通银行3层楼（原大陆银行旧址）最近处 以对撑为主，辅以角撑和边桁架形式（见图1）. 约为8.6m:东侧地下室外墙距离黑龙江路约为2.9~ 3...
[关键词]火车站；混凝土；跳仓法；预应力：架空结构 [中图分类号]TU245【文献标识码】A[文章编号]1002-8498（2012）04-0034-03 Application ofSequenceMethod inLarge Cross-sectionPrestressed OverheadStructureinGuangzhouSouthRailwayStation WuXiaosong （ShenzhenBranchofChina RailwayConstructinEngineeringGroup,ShenzhenGuangdong518052,China） Abstract:Sequence method is applied in the large cross-section，big span， large area，elevated prestressed structureofGuangzhou SouthRailway Station.After theexpert panel sufficient demonstrating for every scheme，the sequence method is chosen.The construction process is described，and the construction division and sequence are also mentioned. The raw materials choice,mix proportion optimization andmolding temperature control are put forward.Finally the construction key points and maintenance measures are obtained. Key words:railroad stations;concrete; sequence method;prestressing;overhead structure 混凝土跳仓法是近些年在国内少数工程项目夹层，钢结构屋面为弧形，最高点标高为50.0m。
施工技术 2015年10月上 24 CONSTRUCTION TECHNOLOGY 第44卷第19期 D0I:10.7672/8js2015190024 跳仓施工坑顶支座大梁长度变化实测与理论分析 赵明 (浙江广播电视集团，浙江杭州310005) [摘要]上海世茂深坑酒店坑顶支座大梁采用跳仓法施工，大梁底部设计有无胎卷材防水层.通过对大梁浇筑后 温度和长度变化的测量与计算，分析出无胎卷材防水层在减少垫层对大梁约束中的作用，以及先浇仓段对后浇仓 段的约束影响.经研究得出，在位于坚硬地基上的垫层上面铺设3mm厚无胎卷材防水层后，垫层与上部混凝土结 构之间的摩擦系数4为0.827. [关键词]混凝土；跳仓法；梁；约束；摩擦系数 [中图分类号]TU375.1 [文献标识码]A [文章编号]1002-8498(2015)19-0024-04 Temperature and Length Measurement and Theoretical Analysis of Support Beam Constructed by Jump Warehouse Method Zhao Ming Zhejiang Radio TV Group Hangzhou Zhejiang 310005 China) Abstract:The support beam of Shanghai Shimao Chasm Hotel is constructed by jump warehouse method and there is PET coil waterproof layer under the beam.By measuring and calculating temperature and length change of the beam this paper analyzed the constraint influence of coil waterproof layer in reducing the constraint between cushion and beam.After laying 3mm coil waterproof layer on the cushion covering hard foundation the friction coefficient between cushion and concrete strueture is 0.827. Key words:concrete;jump warehouse method;beams;constraint;friction coefficient 0引言 采用跳仓法施工的混凝土结构，对于单个仓段 温度变化和尺寸变化的研究以及仓段之间相互约 束的研究目前较为少见.上海世茂深坑酒店项目 坑顶支 坑顶 坑顶支座大梁截面尺寸为3.2mx2.25m 采用跳仓 座大梁 裙房 法施工，由于大梁截面尺寸较大，混凝土施工时大 梁内部温度较高，温度引起的长度变化较为明显， 坑内主体 以坑顶支座大梁为研究对象，对防水层在减少垫层 对大梁约束中的作用，以及先浇仓段对后浇仓段的 图1坑顶支座大梁位置示意 约束影响进行研究. Fig.I Position of the support beam 1工程概况 进行覆盖，定期洒水，侧面模板晚拆.现场温度和 坑顶支座大梁位于坑边上口，大梁底部垫层位 长度测量装置埋设在大梁第1仓段和第2仓段内，2 于坚硬的安山岩上.大梁采用C40混凝土，配筋率 个仓段分别代表单仓段...
2011年12月上 施工技术 第40卷第354期 CONSTRUCTION TECHNOLOGY 37 路面雷达无损检测技术在沥青路面压实 质量检测中的应用 王海涛 (安徽省公路工程检测中心，安徽合肥230022) [摘要]沥青路面的压实质量是控制其工程质量的关键指标.路面雷达作为一种高效、快速、连续、无损的路面检 测设备，其应用技术的研究自20世纪90年代以来一直是国际上的热门课题.路基材料介电特性的差异是路面雷 达应用的先决条件，利用混合料的介电特性与其组成的固态、液态、气态三相体的相关关系，进而基于路面结构层 材料介电特性，将路面雷达无损检测技术应用于沥青路面压实质量检测评价中，开拓了路面雷达的应用领域和 范围. [关键词]道路工程：沥青路面；无损检测；路面雷达；介电常数 [中图分类号]U416.217 【文献标识码]A [文章编号J1002-8498(2011)23-0037-03 Application of GPR Nondestructive Testing Technique in Compaction Quality Inspection of Asphalt Pavement Wang Haitao (Anhui Testing Center For Highway Engineering Hefei Anhui 230022 China) Abstract:The paction quality of the asphalt pavement is a key index to control engineering quality. As an effective speedy continuous and nondestructive testing equipment the study on application of Ground Penetrating Radar GPR)in pavement has been popular all over the world since 1990s.The precondition of GPR application is the difference of dielectric properties of roadbed material using dielectric properties of mixture and the correlation of its solid state liquid state and gas state and then based on the dielectric properties of material for pavement layers GPR nondestructive testing technique is used in paction quality inspection of asphalt pavement the application field and scope of GPR nondestructive testing technique is widened. Key words:highway engineering;asphalt pavements;nondestructive testing:ground penetrating radar; dielectric constant 沥青路面的压实质量是控制其工程质量关键实质量检测中. 指标.传统公路钻芯取样方法...
[关键词】铁路；路基；锚固桩；流塑层；开挖；施工技术 [中图分类号】TU753.11[文献标识码】A[文章编号】1002-8498（2013）20-0093-03 AnalysisonConstructionMethodofRapidExcavationof the SubgradeAnchorPileMeetingFlowPlasticLayer Sun Wenjin'，Luo Jiangbo² (1.Xi'an Metro Co.，Ltd.,Xi'an, Shaanxi 710016, China; 2.The Fourth Engineering Co.,Ld.of China Railway First Group，Xianyang，Shaanxi 712000,China) Abstract;The anchor pile is mainly constructed in the form of manual hole-digging, including cutting water content in excavation of anchor pile，it is necessary to shorten excavation footage，strengthen the wall support and extend removal of baseboard formwork. Construction should be arranged in the dry season,also excavation and retaining timely follow up. After the pile pouring of two sides, the residual pile hole is constructed then. In order to make sure of construction safety and quality, construction must be conducted strictly according to the established plan. Proven results show that advanced support makes higher economic efficiency than the well point dewatering method. Key words:railways; subgrade; anchor pile; flow plastic layer; excavation; construction 1工程概况2施工中出现的问题 京福客专DK596+326.00-DK596+558.68段该段路基锚固桩于2011年9月17日开始施 路基，全长232.68m。