2015年9月下 施工技术 第44卷第18期 CONSTRUCTION TECHNOLOGY 71 D0I:10.7672/5j52015180071 从工法看我国建筑业企业技术发展进程 王凤起 (中国建筑业协会,北京100081) [摘要]结合研究成果,对“十一五”期间建筑科技进步与管理创新成果进行回顾总结,对进一步推动建筑业科技进 步与管理创新提出有效的结论和建议.从调研工法研发这个侧面讲述我国建筑业企业技术进步的情况. [关键词]项目管理;管理创新;工法;建筑业企业 [中图分类号]TU712 [文献标识码]A [文章编号]1002-8498(2015)18-0071-06 Technology Development of Construction Enterprises Based on Construction Method in Our Country Wang Fengqi (China Construction Industry Association Beijing 100081 China) Abstract:Combining with research result the building scientific and technological progress and management innovation at"the eleventh five-year plan"period are resulted.The effective suggestion and conclusion are put forward to improve the building technology development and management innovation. From the aspect of investigated construction method research the construction enterprises technology development in our country is described. Key words:project management;management innovation;construction method;construction enterprises 0引言 藏外的29个省、市和自治区. 在我国建筑业的不断发展中,科技进步和管理 调查共收回问卷401份,其中一级房建企业 创新的贡献对建筑业的发展起着至关重要的作用,217份,特级房建企业84份,建筑业相关企业 它推动了建筑结构技术、材料技术、施工技术、管理 100份. 方法的创新与进步.为摸清建筑业企业科技水平 调查问卷中房建一级和特级资质建筑业企业 现状,引导建筑业企业走可持续发展之路,中国建 的地区分布情况如表1,图1所示.从企业的资质 筑业协会组织开展了“‘十一五’以来建筑业科技进 范围上看,401家施工企业分别为房屋建筑(301家 步与管理创新”调查研究,力图通过调研获取相关 企业,占75.06%)、公路(17家企业,占4.24%)、铁 数据,结合研究成果,对“十一五”期间建筑科技进 道(11家企业,占2.74%)、港口(5家企业,占 步与管理创新成果进行回顾总结,对进一步推动建 1.25%)、水利水电(5家企业,占1.25%)、电力(7 筑业科技进步与管理创新提出有效建议.本文从 家企业,占1.75%)、矿山(7家企业,占1.75%)、冶 调研工法研发这个侧面谈谈我国建筑业企...
2013年10月上 施工技术 第42卷第19期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/sgjs2013190095 不停航跑道下超长管幕保护超浅埋 大断面暗挖施工技术 段英丽 (中铁十六局集团北京工程有限公司,北京100018) [摘要]在机场主跑道不停航条件下修建大断面浅埋暗挖平顶直墙隧道在国内外尚属首次.通过管幕超前支护、 土体超前预加固注浆、多导洞开挖支护等方法解决了不停航跑道下超长管幕保护超浅埋大断面平顶直墙暗挖施工 难题,跑道沉降始终控制在容许范围内,确保了飞机正常起降. [关键词]隧道工程;沉降;监测;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2013)19-0095-05 Ultra-shallow Buried and Large-section Excavation Construction Technology with Ultra-long Pipe-curtain Protection Under Non-stop Flight Runway Duan Yingli (China Railsoay 16th Bureau Group Beijing Engineering Co.Ltd.Beijing 100018 China) Abstract:Large-section shallow flat top vertical wall tunnel under non-stop flight runway at the airport was the first time at home and abroad.The author adopted the pipe-curtain supports consolidation grouting in advance and multi-pilot tunnel excavation supports to solve the problems of large-section ultra- shallow flat top vertical wall excavation construction with ultra-long pipe-curtain protection under non-stop flight runway.The settlement of runway was always controlled within the allowable range to ensure the normal rising and landing of aircraft. Key words:tunnels;settlement;monitoring;construction 大断面平顶直墙浅埋暗挖隧道在开挖过程中联络线及汽车通道工程,隧道施工总长754m 东西 沉降均较大,达到10~30cm 会对周边环境和交通方向,与主跑道垂直.其中,明挖段施工522m 暗挖 产生较大影响.以往工程做法很难满足机场跑道 段施工232m.明挖段包括主跑道西侧373m箱涵、 不停航条件下修建大断面浅埋暗挖隧道.北京首123mU形槽和主跑道东侧26m箱涵;暗挖段232m 都机场旅客捷运系统工程T3E-T2捷运联络线及汽 位于主跑道下. 车通道工程,在机场跑道不停航条件下,实现了超 暗挖段结构形式为双跨单层矩形框架断面,捷 浅埋大断面隧道暗挖过程中跑道沉降始终控制在 运隧道和汽车隧道共构,捷运隧道净空尺...
2010年9月 施工技术 第39卷第9期 CONSTRUCTION TECHNOLOGY 121 刚-柔性桩复合地基技术规程》JGJ/T210-2010 编制与说明 龚晓南,朱奎2,钱力航3,宋振3 (1 粥注大学建工程学院,新江杭州310027:2.温州东建设集团有限公司,粥江温州325000: 3 中国建筑科学研完院,北京100031) [描要]刚-柔性夏地基技术规程》JGJ/T2102010将于2010年9月1口实施.刚-柔性含地基指由天然 地基土和增强体两部分组成的人工地基,规程的主要内容包括则、术语和符号、基本规定、设计、施工和质量检 测.规程具体规定了不同型性的这用条件,定义了单裤承载力特征、地基承戴力消拉值、直令土层压 量等指标. [关键词]刚-荣性爱舍地基:设计:施工:检测 [中图分类号]TU473.1 [交献标识]A [交章编号]1002-8498(2010)09-0121-04 Compilation and Explanation of Technical Specification for Rigid-flexible Pile Composite Foundation JGJ/T210-2010 Gong Xiaonan' Zhu Kui Qian Lihang' Song Zhen (1.College of Ciril Engineering and Architecture Zhejiang Unirersity Hangzhou Zhejiang 310027 China: 2.Wenzhou Dongou Construction Group Co.Ltd.Wenzhou Zhejiang 325000 China: 3.China Academy of Building Research Beijing 100031 China) Abstract:Technical Specification for Rigid-flexible Pile Composite Foundation JGJ/T210-2010 will implement at September 1 2010.The rigid-flexible pile posite foundation is defined as natural soil pounding with reinforced body.The specification mainly includes general rules terminology and symbols basic regulation design construction and quality inspection.Furthermore applying conditions of different rigid piles are prescribed.Moreover characteristic value of single pile characteristic value of subgrade bearing capacity and pressing value of pound soil are defined. Key words:rigid-flexible pile posite foundation:design:construction:inspection 根据佳房和城乡建设部公告第542雾,《刚-柔性制桩和钢管桩等.柔性桩包括水...
2015 No. 15 张茂花等:掺加纳米材料水泥土无侧限抗压强度试验研究 81 表6水胶比变化试验结果 2)纳米Si0最佳掺量为22.6%o,纳米Al0最 Table 6Test results for cement-soil with the change 佳掺量为4.6%o左右,纳米蒙脱土最佳掺量 of water-to-binder ratio 为8.9%0。
参考文献: .纳米sio, [1 ] A L Nevzorov, D D Kozmin, S E Aksenov, et al. Experience 3纳米A120 with the installation of soil-cement piles during the reconstruction 23纳米蒙脱土 of a factory [ J]. Soil Mechanics and Foundation Engineering, 2002, 39 (1) ;31-34. 0.32 0.360.40.440.480.52 [2]李彰明,软土地基加固与质量监控[M],北京:中国建筑工 水胶比 业出版社,2011. 图4无侧限抗压强度-水胶比关系曲线 [3]燕仲或,童小东,周妙妙.掺萘系高效减水剂水泥土室内试 Fig. 4 Relationship curves of the unconfined 验研究[J].地下空间与工程学报,2009(5):920-923. pressive strength and the water-to-binder ratio [4]叶观宝,陈望春,徐超,等.复合添加剂在水泥土搅拌法中的 应用[J].公路交通科技,2006,23(5);29-31. 从图4可以看出,随着水胶比的增加,纳米水泥 [5]麻志刚,黄新,王颖君.混凝土外加剂在水泥土中应用的试验 土的无侧限抗压强度呈现先增大后减小的趋势。
2012年1月下 施工技术 第41卷第357期 CONSTRUCTION TECHNOLOGY 37 XX形空间相贯节点受力性能有限元分析 罗立胜,罗永峰,郭小农 (同济大学建筑工程系,上海200092) [摘要]复杂空间相贯节点广泛应用于大型空间结构中,目前规范尚无正确完善公式计算其承载力.为研究这类 复杂空间相贯节点的受力性能和提出合理的构造改进措施,根据某实际工程,选择同时承受较大轴力和弯矩的 形空间相贯节点进行有限元分析,并提出5种改进措施来改善节点的力学性态.分析结果表明,增加首先“破坏” 支管的壁厚不能显著提高极限承载力;支管与主管汇交处设置加劲肋可以改善节点域的应力分布;在靠近节点域 的支管内设置加强板可提高节点极限承载力;支管与主管之间交汇处设置贯穿加劲肋可显著减小主管的变形. [关键词]钢结构;网壳;节点;受力性能;有限元分析 [中图分类号]TU392.3 [文献标识码]A [文章编号]1002-8498(2012)02-0037-05 The Mechanical Behavior Analysis of XX-joint with FEM Luo Lisheng Luo Yongfeng Guo Xiaonong Department of Building Engineering Tongji University Shanghai 200092 China) Abstract:Although spatial crossing tubular SCT)joints are widely used in the large-span steel structures formula for the load bearing capacity of the SCT joints are not perfect.According to the design requirements of an actual project the XX-joints subject to large axial forces along with large moments are analyzed with FEM.Based on the mechanical behavior of SCT joints obtained from the analysis five improvement measures are put forward.The further verification shows that increasing the joint wall thickness at the branch pipe where failure happens first will slightly enhance the load bearing capacity. Setting a stiffener at the intersection of main pipe and branch pipe will improve the stress distribution in the core area.Setting a stiffening plate on the branch pipe nearby the core area will increase the load bearing capacity obviously.Setting stiffener at the intersection of main pi...
2011年4月下 施工技术 第40卷第339期 CONSTRUCTION TECHNOLOGY 63 U型玻璃幕墙在某工程中的应用 肖磊,何巍,周励强2,鲁猛3 (1.北京城建九建设工程有限公司,北京100039:2.南海发展股份有限公司,香港; 3 华润置地(北京)股份有限公司,北京100035) [摘要】U型玻璃其以自身质量轻,安装及施工方便,不但减轻了建筑结构的自重,且省去了内外墙的装修做法,从 而大大降低了工程造价.某工程外墙采用双层U型玻璃墙体,两层U型玻璃间的空气层具有隔声、隔热等节能作 用.U型玻璃本身具有较高的机械强度,对于中高层建筑的墙体可以起到良好的安全保护作用.U型玻璃抗酸、 碱和高湿度作用性能稳定.U型玻璃多用于建筑的非承重外墙、建筑装饰室内隔墙、屋面及窗等.作为墙体或屋 面材料,可以垂直、斜坡、单排或双排安装,可大量增加采光面积,具有装饰性和结构性等多种功能,是一种多用途 的建筑构件. [关键词]U型玻璃;节能;环保;隔热;隔声 [中图分类号]TU767.6 [文献标识码]A[文章编号]1002-8498(2011)08-0063-03 Application of U Shape Glass Curtain Wall in Engineering Xiao Lei' He Wei' Zhou Liqiang Lu Meng' (1.No.9 Construction Engineering Co.Ltd.of BUGG Bejing 100039 China; 2.Nanhai Development Co.Lid.Hong Kong China;3.Huarun Real Estate Co.Lad.in Beijing Bejing 100035 China) Abstract:U shape glass has light weight and it is convenience for installation and construction.So it can save the engineering cost through reducing the structural weight without decoration on the wall.Double U shape glass external wall is adopted in a project and the air between two layers can insulate noise and heat.The U shape glass can protect the safety of high-rise building walls because of its good mechanical performance.In addition the glass has stable performance on resist acid alkali and high humidity.U shape glass is often used as non-bearing external wall indoor partition wall floor and window of building.As a wall or floor U shape glass can be installed at vertical slope single row or double row and it can greatly inc...
施工技术 2017年6月上 138 CONSTRUCTION TECHNOLOGY 第46卷第11期 D0I:10.7672/5j52017110138 U型槽联合支护体系在狭小空间基坑支护中的应用 邢振华,孟成功,胡明媚,崔正立,刘旭升 (中建三局集团有限公司东北分公司,辽宁沈阳110179) [摘要]沈阳乐天世界商业(二期)项目采用了U型挡土槽与旋喷桩联合支护形式的施工方法,解决了狭小空间内 相邻工程基坑容易产生的安全、质量及工期问题,满足了现代化建筑高品质的要求和业主的需求,适应建筑施工业 的发展趋势. [关键词]基坑:支护;U型挡土槽:狭小空间;施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2017)11-0138-03 The Application of U-type Groove Combined Support System in Foundation Excavation Support in Narrow Space XING Zhenhua MENG Chenggong HU Mingmei CUI Zhengli LIU Xusheng Northeast Branch of China Construction Third Engineering Group Co. Lad. Shenyang Liaoning 110179 China) Abstract:The construction method of U-type retaining wall and jet grouting pile was applied in Shenyang Lotte World Commercial phase two)project.The utility model solves the problems of safety quality and time limit of the adjacent foundation excavation in the narrow space and meets the requirement of the high quality and the owner needs of the modern buildings which is suitable for the development trend of the construction industry. Key words:foundation excavation;supports;U-type retaining wall groove;narrow spaces;construction 1工程概况 非机 护栏C20喷射 46.500 某工程位于沈阳市皇姑区北陵大街金廊1号地 45.500 机动车道动车道路面层混凝土 100 内置双向钢筋网 43. 块,南侧为昆山东路,西侧为北陵大街,北侧为岐山 管廊 有反层 既有高铁车站地下室 管线水工布购物中心 东路,东侧为北站北广场.工程为超大型城市综合 U型槽侧票 直径200水孔 体项目,包括办公楼、公寓、酒店、地标大厦(地下 001t1 主第大支护桩 层)、购物中心及乐天公园,总建筑面积为 地下停车场 既有高铁车站地下室 571266m2 地下建筑面积为229894m2 地上建筑面 32400 地下停车场 积为341372m2.基础形式为筏板基础及桩筏 基础. 06 2工艺特点 25200 23.400 针对毗邻高铁段基坑工程对安全及稳定...