2010年1月 施工技术 第39卷第1期 CONSTRUCTION TECHNOLOGY 33 斯托克曼商业中心土胎模冬期施工技术 王剑峰,焦润明,贺小村,李钟,王建春 (中国建筑一局(集团)有限公司,北京100161) [摘要]圣彼得堡斯托克曼商业中心在冬期逆作施工中采用土胎模技术.在实际施工过程中,采用电阻丝对楼板 混凝土进行加热,保湿被覆盖、保温棚保温,以满足混凝土浇筑条件,并为后续混凝土养护提供条件,混凝土浇筑后 养护时及时测温.通过计算混凝土水化热确定最终黏土温度.指出土胎模冬期施工工艺及注意事项.地下1层 开挖完成后,果用土胎模法完成的混凝土顶板符合设计及当地规范要求. [关键词]基础工程;逆作法;冬期施工;土胎模;施工技术 [中图分类号]TU753.1 [文献标识码]A[文章编号]1002-8498(2010)01-0033-03 Winter Construction Technology of Soil Mould in Stockmann Nevsky Center Wang Jianfeng Jiao Runming He Xiaocun Li Zhong Wang Jianchun China Construction First Building Group)Co.Ltd.Beijing 100161 China) Abstract:Soil mould technology is adopted in winter construction of Stockmann Nevsky Center in St.Petersburg.Concrete slabs are heated by resistance wire and coated with heat preservation quilt and shed to provide conditions for concrete pouring and curing.Moreover concrete temperature is monitored in time during curing.Authors decide temperature of clay through calculating concrete hydration heat. Furthermore construction technology and attention points of winter construction of soil mould are proposed.After excavation of first underground floor the quality of concrete floor can satisfy requirements of design and local standard. Key words:foundation engineering;top-down construction method;winter construction;soil mould; construction technology 土胎模法用成型的土(岩)层全部或部分代替现 浇混凝土的支架、模板进行施工.土胎模在常规施工 中应用较少,常用于“逆作法”及“半逆作法”施工中, 其施工简便、快捷,并可大幅度降低工程造价. 1工程概况 圣彼得堡斯托克曼商业中心项目位于圣彼得堡市 莫斯科火车站对面,地处最繁华的商业区涅瓦街东端 图1项目位置示意 (见图1).该项目...
2013年4月上 施工技术 第42卷第7期 CONSTRUCTION TECHNOLOGY 53 D0I:10.7672/sgjs2013070053 排桩钢支撑支护结构位移和弯矩分析研究 艾晓辅1,付涛,刘永亮,池秀文2,罗志刚1 (1.北京地矿奥通建设工程有限公司,北京100093;2.武汉理工大学资源与环境工程学院,湖北武汉430070) [摘要]以武汉阅马场首义广场隧道工程为依托,以排桩钢支撑支护结构为主要研究目标,采用解析法和数值模 拟法对该工程中的排桩钢支撑支护结构的位移变形和弯矩进行模拟计算,并与实测位移进行比较.对比分析计 算结果,研究分析了排桩钢支撑支护结构在基坑开挖过程中桩身侧向位移和受力弯矩的分布规律及特点. [关键词]隧道工程;支护;排桩;钢支撑;位移;弯矩 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2013)07-0053-05 Analysis for Displacement and Bending Moments of Row Piles and Steel Supports Ai Xiaofu' Fu Tao' Liu Yongliang' Chi Xiuwen2 Luo Zhigang' (1.Beijing Aotong Engineering Co. Lid.Beijing 100093 China;2.College of Resources and Enrironmental Engineering. Wuhan University of Science and Technology Wuhan Hubei 430070 China) Abstract:Based on the cut-cover tunnel project in Shouyi Square of Wuhan focusing on supports structure of row piles and steel supports this paper adopts the analytical method and numerical simulation to calculate the deformation and stress of the supports structure in the project.Meanwhile this paper conducts a parative analysis of the results and concludes the pattern and characteristics of the displacement deformation and bending moments of the supports structures in deep foundation excavation. Key words:tunnels;supports;row piles;steel supports;displacement;bending moment 随着城市建设的不断发展,隧道基坑的开挖和通过曲线拟合根据实测位移曲线得到曲率,得出计 支护技术得到了前所未有的广泛应用.由于隧道算支护结构弯矩的合理估算方法.吴小将等依 基坑工程多建在建筑密集或交通密集的市中心,交据实测测斜曲线,建立了一种在不需要知道钢筋应 通环境复杂,对基坑支护的安全性提出了较高要 力情况下就能估算弯矩的简便方法.刘国彬等 求.如何在基坑开挖过程中获取支护结构...
2016年1月下 施工技术 第45卷第2期 CONSTRUCTION TECHNOLOGY 101 D0I:10.7672/sgs2016020101 拼装式铝合金单边支模施工技术 梁海波,姜冲2,黄贵,范育辉2,韦志亚1 (1.中国建筑第八工程局有限公司广西分公司,广西南宁530300; 2.中铁隧道集团四处有限公司,广西南宁530007) [摘要]拼装式铝合金单边支模具有质量轻、强度高、环保、回收利用价值高等优点.结合技术特点,重点介绍了拼 装式铝合金单边支模的组成和施工工艺.指出拼装式铝合金单边支模体系由侧墙模板、预埋系统、支撑架体3部 分组成,分别阐述了各体系规格配置及工作原理等. [关键词]模板;铝合金模板;单边支模;拼装;施工技术 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2016)02-0101-04 Construction of the Assembled Aluminum Alloy Single Side Formwork Liang Haibo' Jiang Chong Huang Gui' Fan Yuhui Wei Zhiya' (1.China Construction Eighth Engineering Division Co.Ltd.Guangxi Branch Nanning Guangxi 530300 China; 2.Sichu Co. Ltd.China Railway Tunnel Group Nanning Guangxi 530007 China) Abstract:The assembled aluminum alloy single side formwork has the advantages of light quality high strength environmental protection high recovery and utilization value and so on.According to these characteristics of the assembled aluminum alloy single side formwork the position and construction technique is introduced in detail.It is pointed out that this system is posed of sidewall formwork embedded structure and supports.The specification configuration and work principle is described separately. Key words:formwork;aluminum alloy formwork;single side formwork;assembly;construction 1单边支模特点 绿色环保建材,在使用过程中,可减少大量噪声的产 单边支模的种类多,大钢模配合钢支撑是最常 生;同时在工程施工完成后,其铝材可回收利用,回收 用的单边支模方式,工艺成熟,施工范围广.但随 价值高;④施工效率高,组装方便,拼装速度快、质量 着新材料新工艺的发展,这种传统工艺越来越不能 有保证,也可提前拼装好运至现场施工;⑤适用范围 适应新形势的发展.寻求新的材料来代替传统材 广本方法适用于地下单边支模结构,也可用于 料施工是...
施工技术 2013年2月上 4 CONSTRUCTION TECHNOLOGY 第42卷第3期 D01:10.7672/sgjs2013030004 我国绿色建筑项目的风险影响分析* 万欣1,秦旋2,李启明1 (1 东南大学土木工程学院,江苏南京210096;2.华侨大学土木工程学院,福建厦门361021) [摘要]风险影响分析是工程项目风险评价的重要方面.首先,从多个维度分析绿色建筑的内涵,并考虑绿色建筑 的长期贡献和长期效益建立绿色建筑目标体系的理论模型;其次,从内在属性和国内宏观环境两个角度,对绿色建 筑的风险特性进行剖析,进一步对识别的绿色建筑风险因素进行归纳,构建绿色建筑的风险层级;最后,按风险层 级和绿色建筑的参建主体,对风险因素如何影响绿色建筑目标的实现作了一系列分析. [关键词]绿色建筑;目标体系;参建主体;风险影响;风险管理 [中图分类号]TU201.5 [文献标识码]A [文章编号]1002-8498(2013)03-0004-07 Risk Impact Analysis of Green Building Projects in China Wan Xin' Qin Xuan? Li Qiming' (1.College of Ciuil Engineering Southeast University Nanjing Jiangsu 210096 China: 2.College of Civil Engineering Huagiao University Xiamen Fujian 361021 China) Abstract:Risk impact analysis is an important part of risk evaluation.Firstly the connotation of Green Building (GB)was studied from multiple dimensions and a theoretical model of GB objective system was built considering GB's long-term contributions and benefits.Secondly the risk characteristics of GB were dissected from the perspective of intrinsic attributes and domestic macro-environment.The identified GB's risks were summarized and a risk hierarchy was structured.At last a series of analyses on how the risk factors affect the achievement of GB objectives were conducted with respect to different risk levels and GB participants. Key words:green buildings;objective system;participant body;risk impact;risk management 0引言 建筑的基本原理、风险特性以及风险影响进行深入 绿色建筑在能源危机、环境污染的背景下成为 探讨和分析,提高参建者对绿色建筑风险的认识, 世界主要发达国家及发展中国家力推的建筑模...
施工技术 2010年3月 26 CONSTRUCTION TECHNOLOGY 第39卷第3期 我国木胶合板模板的发展及主要问题 糜嘉平 (中国模板协会,北京100088) [摘要]提出目前多种模板并存是模板施工的发展方向.指出木胶合板模板能够高速发展的原因,是因为我国重 视植树造林,而且启动了速生丰产林工程;另外指出我国木胶合板模板存在的主要间题:产品质量和档次较低,木 材资源浪费严重;生产工艺和设备落后,技术与管理水平低;木胶合板厂家过多,生产规模小等.提出了制定有效 措施,开展节木代用;加强科技创新,提高木材利用率等技术施,积极引导木胶合板模板健康发展. [关键词]木胶合板;模板;发展;主要问题 [中图分类号]TU755.2 [文献标识码]A[文章编号】1002-8498(2010)03-0026-03 Development and Main Problems of Domestic Wood Plywood Formwork Mi Jiaping (China Formwork Institute Beijing 100088 China) Abstract:The development direction for formwork construction is of coexistence with some kinds of formwork.It is pointed out that paying attention to afforestation and starting rapid wood engineering are reasons for impelling rapid development of wood plywood formwork.Furthermore the problems existed in wood plywood formwork are put forward including low quality and level terrible waste for wood resource lagging production technique and equipment low technology and management level as well as many factories of wood plywood but small production scale.In order to solve these problems measures are indicated which are making effective method and developing wood replacement strengthening science and technology innovation and improving utilization ratio of wood. Key words:wood plywood;formwork;development;main problem 近年来,我国许多城市的建筑施工中,已大量采用2木胶合板模板高速发展的原因 木胶合板模板,发展速度十分惊人,在建筑施工中的应 随着我国天然林面积日益减少,20多年前,曾有 用量已超过组合钢模板和竹胶合板模板.由于我国木专家预测木胶合板生产将是无米之炊,在制订“十五” 材资源贫乏,木胶合板模板的大量应用造成木材资源和“十一五”规划时,木胶合板曾被列为限制发展的产 浪费严重.因此,我国对推...
2012年3月下 施工技术 第41卷第361期 CONSTRUCTION TECHNOLOGY 43 我国建筑铝模板产业的崛起对绿色施工的推动作用 仇铭华 (中国基建物资租赁承包协会,北京100834) [摘要]遵循《绿色施工导则》,通过对建筑铝模板与建筑工程中广泛采用的木(竹)胶合板模板和钢模板的材料性 能、制造和应用成本,以及应用效果的分析对比,得出结论:建筑铝模板是一种可周转使用300次以上、有较高残 值、可再生使用的低耗、环保、经济实用的绿色建材,在绿色建筑施工中有极其重要的地位.根据国外广泛应用状 况和国内逐渐增长的应用趋势,可以预测建筑铝模板在我国今后的建筑工程中将会有较大增长,特别是在超高层 建筑施工工程中,更会得到普遍的推广应用. [关键词]模板;铝模板;绿色建筑;绿色施工 [中图分类号]TU755 [文献标识码]A [文章编号]1002-8498(2012)06-0043-05 Promoting Role of Aluminum Formwork Industry Rising for Green Construction in China Qiu Minghua China Construction Material Rental Contractor Association Beijing 100834 China) Abstract:Following the guide of green construction by analyzing and paring the material properties manufacture cost and effect of aluminum formwork with wood bamboo)plywood and steel formwork widely used in construction it can be concluded that the aluminum formwork is a turnaround of more than 300 times.It has a higher residual value.It is reusable and green material of environment protection.It has extremely important position in the green construction.Through extensive application status abroad and domestic gradual trends it can be predicted that the aluminum formwork construction projects will have a greater growth in the future especially in high-rise building construction projects and it will have widely promote application. Key words:formwork;aluminum formwork;green buildings;green construction 1铝模板产业崛起的背景 术.采用铝模板技术是符合我国“以钢代木”和《建 当前,我国处于城市化快速发展阶段,城镇住筑业1项新技术》政策,符合低碳节能减排和绿色 宅建设任务繁重.高层和超高层建筑都是以钢筋 施工...
施工技术 2017年1月下 98 CONSTRUCTION TECHNOLOGY 第46卷第2期 D0I:10.7672/5gj2017020098 我国建筑模板产品现状与展望 高峰,石亚明 (中国模板脚手架协会,北京102200) [摘要]介绍了我国模板主要产品的发展历程,通过对模板产品的论述,指出了模板主要产品各自的特点,并提出 了模板产品今后发展的建议. [关键词]模板;组合式模板;铝合金模板;现状;发展;建议 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2017)02-0098-04 Present Situation and Prospect of Building Formwork Products in China Gao Feng.Shi Yaming China Formwork and Scaffold Association Beijing 102200 China) Abstract:The development process of the main products of our country is introduced.Through the discussion of the template products the characteristics of the main products are pointed out and some suggestions for the future development of the products are put forward. Key words:formworks;bined formworks:aluminum alloy formworks;current situation; development;suggestions 1我国模板产品的发展概况 简单粗放走向“环保、简便、质优”的发展之路,现在 建国初期,国内模板一片空白,各类建设中所 模板产品及技术已经向国际先进水平看齐,在很多 需的模板较少,质量要求不高,多以木板、木方为模 细节上,国内模板产品也有独到之处.当前以组合 板,经简单拼合,形成所需的模板结构,成型的构件 钢模板为主的格局已经打破,形成各种模板产品共 表面质量差,但基本满足当时的需求.20世纪80 存、各领风骚的形势. 年代我国组合钢模板研制成功,在全国范围内迅速 2模板产品分类 得到大量推广应用.随着我国各类建筑大量兴建, 模板产品基本可分为2类,按材料来分有木、竹 组合钢模板由于单块面积小,组拼板面的拼缝多, 胶合板模板,钢模板,塑料模板,铝合金模板,混凝 已经不能满足清水混凝土工程的要求.20世纪90 土模板等.按施工工艺来分有组合式模板、大模 年代,各地高层建筑如雨后春笋般破土而出,现浇 板、台模、桥梁模、隧道模、爬模、滑动模板等. 剪力墙结构成为这个时期的主旋律,拼装式全钢大 组合式模板可分为模块组合和材料组合,其中 模板应运而生,以其组合面积大、结构刚度好、表面 模块组合模板有组合钢模板、组合塑料模板、组合 平整度高等优势得到了用户的青睐.2000年以后, 铝合金模板;材料组合模板有钢(铝)框胶合板模板 竹胶合板模板和木胶合板模板研制开发成功,很快 和钢(铝)框塑料模板. 在各种建筑工程中大量应用.2005年前后,通过借 3主要模板产品简介 鉴国外先进技术,使塑料模板在材料选用、产品性 随着混凝土施工技术的发展,现场施工机械的 能、产品设计、工程应用等方面有了较大发展.2010...
[关键词]隧道工程;盾构;砂卵石地层;进仓技术;加固;注浆 [中图分类号】U455[文献标识码]A[文章编号]1002-8498(2017)01-0061-05 Chamber-entering Technology of Slurry Shield in High Permeability SandyCobbleStratumUnder theWorkingPressure or NormalPressure Wang Huiwu', Guo Jianning',Dai Bing²,Fang Yong' (1.Key Laboratory ofTransportation Tunnel Engineering,Ministry of Education,Southwest Jiatong Unitersity, Chengdu,Sichuan 610031,China; 2. China Railway 16th Group Co.,Ltd.,Beijng 100018,China) Abstract;High permeability sandy cobble stratum had properties of high porosity, strong permeability, high water content, high gravel strength and so on. When the shield machine drove in this stratum, its cutters and cutter head were worn seriously. In order to ensure the safe of excavation, checking and replacing the cutters by entering into chamber frequently was necessary.Based on engineering practice, the authors took beneficial tests to chamber-entering technology of slurry shield in high permeability sandy cobble stratum under the working pressure or normal pressure which finally resulting in success and relating integrated techniques. Key words: tunnels; shields; sandy cobble stratum; chamber-entering technology; reinforcement;grouting 0引言影响了施工进度。
施工技术 2017年3月上 48 CONSTRUCTION TECHNOLOGY 第46卷第5期 D01:10.7672/sgjs2017050048 强夯置换法在桩基纠偏中的应用 杨建华1,彭从文2 (1.江苏城乡建设职业学院土木工程系,江苏常州213147;2.长江大学城市建设学院,湖北荆州434023) [摘要]强夯置换法在软弱地基加固中得到广泛应用,如何应用其挤密效应进行桩基纠偏未见报道.以某高边坡 桩柱式挡土墙为背景,介绍采用强夯置换法进行桩基纠偏的处理方案、参数估算方法及施工质量控制要点等.实 践表明,在周边环境条件允许的情况下,只需要合理设置碎石约束墙体,就可以得到较好的纠偏效果. [关键词]桩基础;强夯置换法;纠偏;挡土墙;碎石桩;挤密效应 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2017)05-0048-03 The Application of Dynamic Replacement Method in Deviation Rectification of Support Pile Yang Jianhua' Peng Congwen (1.Department of Ciril Engineering Jiangsu Urban and Rural Construction College Changzhou Jiangsu 213147 China; 2.School of Urban Construction Yangtze University Jingzhou Hubei 434023 China) Abstract:The dynamic replacement method was applied widely for the soft soil treatment at present there is not report about how to take advantage of its extrusion effect to rectify pile deviation.Take a retaining wall of a high slope for instance this paper introduces the treatment scheme and parameters calculating method of the dynamic replacement method in deviation rectification of support pile.The result shows that this method is effective which only needs a proper gravel wall layout if the surrounding condition is satisfied. Key words:piles;dynamic replacement method;deviation rectification;retaining walls;gravel piles; extrusion effect 工程中桩基由于各种原因出现偏斜,常用纠偏其用于桩基纠偏工程并取得较好效果. 方案为卸荷与加载,即在桩基偏移反向通过卸1工程概况 土或施工应力孔卸去荷载,而在偏移方向增加荷1.1工程简介 载,加载方式可以是地面堆载、锚拉以及千斤顶顶 某厂平工程,现状地面高程为71.000~ 推等.其中,千斤顶顶推是最为有效...
2012年6月上 施工技术 第41卷第366期 CONSTRUCTION TECHNOLOGY 57 强夯法在碎石土高填方边坡中的应用 刘运涛,张学飞,丁月双 (天津市粘察院,天津300191) [摘要】针对某碎石土地基填土厚度大,土质松散,地基不均匀等特点,果用强夯法对地基进行处理.按照强奔处 理的技术要求,并根据试券结果确定了强夯参数.最后,通过载荷试验、动力触探、现场土工试验等手段检验了强 夯法的处理效果.同时,通过强夯前后边坡稳定性的对比,分析了强夯对边坡稳定性的影响.该工程填土地基经 强夯处理后,地基性状得到了明显改善. [关键词]强:碎石土;高坡稳定性:检验 [中图分类号]TU472 [文献标识码]A [文章编号]1002-8498(2012)11-0057-03 Application of Dynamic Compaction in High Slope Filled with Gravel Soil Liu Yuntao Zhang Xuefei Ding Yueshuang Tianjin Institute of Geotechnical Inmestigation Surveying Tianjin 300191 China) Abstract:Based on the characteristics gravel soil foundation filling in thickness loose soil nonuniformity dynamic paction is used.According to the technical requirements and the test results of dynamic paction the parameters of dynamic paction are determined.Finally this paper confirmed the treatment effect of dynamic paction through load test dynamic penetration on-site soil tests and so on.Meanwhile the paper analysed the slope stability by the parison of slope stability before and after the dynamic paction.The ground behaviors of the fill foundation for the construction are improved after dynamic paction Key words:dynamic paction;gravel soil:slope stability:inspection 强夯法由法国Menard技术公司于1969年首回填碎石粒径变化较大,一般粒径2-50cm 最大可 创,该方法是利用极大的冲击荷载作用于地基上,见100cm以上大块碎石,块石呈棱角状,级配不均 在土中产生极大的冲击波,使地基压密,从而提高匀,填土厚7~1m;坡洪积层主要由粉质黏土和碎 地基的承载力,降低其压缩性,还可以提高土层的石组成:下部为全风化微风化白云岩. 均匀性,减少地基可能出现的差异沉降.强夯法由2强夯参数选择 于具有加固效果显著、适用土类广、施工方便、工期2.1强夯处理技术要求 短、费用低等众多优点,已成...
施工技术 2013年11月上 78 CONSTRUCTION TECHNOLOGY 第42卷第21期 D01:10.7672/sgjs2013210078 强夯振动数值模拟与现场实测* 吴益萍,张天林2,王继成3 (1.浙江三门中诚建设有限公司,浙江三门317100;2.台州建浩工程管理有限公司,浙江台州318000; 3.台州职业技术学院建筑工程学院,浙江台州318000) [摘要]为了防止强夯振动对房屋的破坏和减少强夯造成的地下管线位移,在地下管线旁设置了减振沟,对减振沟 的不同形式进行了数值模拟,并进行了现场测试.研究发现强夯的振动、挤土效应不容忽视,减振沟能显著减轻振 动和挤土效应,减振沟越深,越靠近要保护的建筑物,减振效果越好;如果减振沟设在地下管线旁远离夯点的一侧, 地下管线位移较大,如果减振沟设在靠近夯点一侧,地下管线位移较小. [关键词]强夯;振动;挤土效应;减振沟;数值模拟 [中图分类号]TU441.8 [文献标识码]A [文章编号]1002-8498(2013)21-0078-03 Numerical Simulation and Field Measurement on Vibration of Dynamic Compaction Wu Yiping' Zhang Tianlin2 Wang Jicheng' (1.Sanmen Construction Company Sanmen Zhejiang 317100 China;2.Taizhou Jianhao Supervision Company Taizhou Zhejiang 318000 China;3.Department of Architecture and Civil Engineering. Taizhou Vocational and Technical College Taizhou Zhejiang 318000 China) Abstract:Damping ditch was dug beside underground pipeline so as to prevent buildings from damage and reduce underground pipeline displacement.Different damping ditches were simulated and field measurement was done.It was found that damping ditch could reduce vibration and underground pipeline displacement greatly.The deeper and nearer to the building the damping ditch is the better the damping effect is.The underground pipeline displacement is small when the damping ditch is between underground pipeline and tamping points otherwise the displacement is great. Key words:dynamic paction;vibration;soil-pacting effect;damping ditch;numerical simulation 0引言 粉质黏土...
施工技术 2011年7月上 62 CONSTRUCTION TECHNOLOGY 第40卷第344期 强夯加固吹填地基振动传递机理及减振措施研究 张大伟,郭立英2,乔京生3,李娄山4 (1.唐山市建设工程质量监督站,河北唐山063000; 2.唐山市住房和城乡建设局,河北唐山063000:3.唐山学院,河北唐山063000: 4.河北联合大学,河北唐山063000) [摘要]根据曹妃甸工业区的强夯工程实例,研究了不同夯击能下强夯振动在沿海吹填地基中的衰减规律,提出了 水平方向和垂直方向加速度的衰减经验公式.研究分析了在不同深度、宽度及充填物条件下隔振沟对强夯振动传 递的影响和减振效果.结果表明,隔振沟深度对减振效果有较大影响,深度越深减振效果越好,但存在极限深度, 在吹填地基情况下隔振沟深度一般不超过3m或被保护地下结构物(包括桩基或其他深基础)深度的1/5. [关键词]强夯;夯击能;隔振沟;减振效果;弹性模量 [中图分类号]TU472.31 [文献标识码]A [文章编号]1002-8498(2011)13-0062-03 Study on Vibration Transfer Mechanism of Dredger Fill Foundation Strengthened by Dynamic Compaction and Vibration Reduction Measures Zhang Dawei' Guo Liying Qiao Jingsheng' Li Loushan' (1.Tangshan Construction Quality Supervision and Examination Station Tangshan Hebei 063000 China; 2.Department of Housing and Urban-rural Development of Tangshan Tangshan Hebei 063000.China: 3.Tangshan College Tangshan Hebei 063000 China; 4.Hebei United University Tangshan Hebei 063000 China) Abstract:Based on dynamic paction engineering of Caofeidian industrial area the authors analyze attenuation law of dynamic paction vibration under different tamping energy in dredger fill foundation and propose attenuation experience formula of horizontal and vertical vibration acceleration.They also analyze the effect of isolation trench with different depth width and fillings on vibration transfer.The results show that the depth of isolation trench has great effect which should be less than 3 meters or 1/5 depth of underground structure ...
[关键词]地基;滑坡;注浆;钢管桩;扩大基础;施工技术 [中图分类号】TU753[文献标识码]A[文章编号】1002-8498(2015)13-0043-04 ApplicationofRock-socketedSteelPipeCementCombinationPile inFoundationTreatment WangWeiwei,Yi Da (The Third Engineering Co.,Ltd.of theFirstHighway Engineering Bureau of CCCC,Bejing101102,China) Abstract:According to the terrain,spread foundation and grouting steel pipe pilewere adopted for mixing station in landslide slope. The load of structure dispersed in grouting steel pipe pile,which can play a role on pressure foot and anti-slide.This paper mainly introduced the construction technology of spread foundation and grouting stee pipe pile, engineering practice shows that good effect is obtained. Key words:foundations;landslides; grouting; steel pipe piles; spread foundation; construction 1工程概况 采用嵌岩钢管水泥浆组合桩处理地基并采用钢筋 万利高速公路沿线山地广布,丘谷相连,地势混凝土扩大基础的形式。
[关键词]地质工程;大型古滑坡体;局部复活蟠滑;混凝土加固;分析 [中图分类号]TU94[文献标识码]A[文章编号]1002-8498(2015)12-0109-06 TreatmentCountermeasuresStudyandRevivedGenesisofa LargeAncientLandslideMassinQingxu ofShanxiProvince Liu Wu (Beijing Geo-engineering Design and Research Institue,Beijing100500,China) Abstract:Taking a large ancient landslide mass treatment engineering at Qingxu as an example, the basic features and genesis of local revived creep-slide-mass of the ancient landslide is discussed,the stability of creep-slide-mass is evaluated and analyzed. The design scheme of creep-slide-mass treatment engineering is proposed.Then rationality and effectiveness of the exploration evaluation and treatment design for the landslide through the process of treatment construction are analyzed,at the same time,some problems and hidden trouble existing in treatment aspect are discussed as well. Key words:geological engineering; large ancient landslide; local revived creep; concrete reinforcement; analysis
1工程背景 本文所介绍的古滑坡原为一稳定的古滑坡,位于 太原市清徐县某矿区的拟建工业广场附近,近年,因 矿区整体规划开采建设需要,对拟建工业广场范围内 的地形、地貌进行了开挖与平整,主要用于采矿斜井 的施工场地、兴建厂房及配套设施。
目前,古滑坡的 中部、下部已被开挖并平整成2个大平台,滑坡的前拟建工 缘也被掩埋。
2013年雨季过后,在古滑坡的北西侧 出现了多条地裂缝,同时,在省道S316近东西段的南图1场地位置示意 侧附近也出现了深度、宽度较大的地裂缝及地面沉Fig.1 Site location 陷。
[关键词】钢结构;预应力;拉索;张拉;施工技术 [中图分类号】TU394;TU758[文献标识码]A [文章编号】1002-8498(2014)14-0131-04 Prestressed Tensioning ConstructionforHotExtrudedEthylene HighStrengthWire CableofShanxiSports Center Gymnasium ZhouXiangchun (Shanxi Province Government ConstructionAuthority,Taiyuan,Shanxi030013,China) Abstract:The hot extruded ethylene high-strength wire cable tensioning construction wasresearched.The application of this technology in the construction of Shanxi Sports Center Gymnasium project was introduced,including requirements specifications and technical indicators of the anchorage and cable material, the flow and key points of cable production, cable laying device, steps,methods and precautions, cable lifting and traction points, cable tensile strength,classification,principle and procedure principle,and so on.The construction technology canmeet therequirements of large span and large space. Key words;steel structures; prestressing;tensile cable; tensioning; construction 1工程概况 山西体育中心体育馆工程,位于太原市南部的 晋源区,建筑面积近30000m²,设8000座,比赛场 地上空跨度最大、最宽处达90m左右,主体结构为 自行车馆 钢筋混凝土结构,屋面结构形式采用多重弦支网壳 体育馆 游泳馆 +空腹桁架+鱼腹式桁架,多重弦支网壳下部为预 图1山西体育中心 应力钢索。
预应力钢索采用热挤塑乙烯高强钢丝 Fig.1 Shanxi Sports Center 拉索预应力张拉技术。
施工技术 2014年1月上 32 CONSTRUCTION TECHNOLOGY 第43卷第1期 D0I:10.7672/sgjs2014010032 山地大直径微变形减震桩施工技术* 程群,刘睿,罗宗礼,胡畔,吴小鑫,刘岩棚 (中建四局第六建筑工程有限公司,贵州贵阳550000) [摘要]通过工程实例,介绍了微变形减震柱施工技术的特点、难点以及减震桩隔离层材料的选择.从水磨钻成 孔、混凝土护壁浇筑、隔离层施工等几个方面详细介绍了该技术的施工工艺流程和控制要点.实践结果表明,该技 术施工效率高、质量可靠,降低了施工成本. [关键词]桩;减震桩;隔离层;挤塑板;施工技术 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2014)01-0032-03 Construction Technology of Large-diameter Vibration Reduction Pile in Mountain Cheng Qun Liu Rui Luo Zongli Hu Pan Wu Xiaoxin Liu Yanpeng China Construction 4th Engineering Bureau 6th Co.Ld.Guiyang Guizhou 550000 China) Abstract:Based on engineering practice this paper introduced characteristics and difficulties of vibration reduction pile construction technology and materials choice of isolation layer.Construction technique and control points are mainly introduced from drilling concrete protection wall pouring and isolation layer. Engineering practice shows that this technology can improve construction efficiency ensure quality and reduce the cost. Key words:piles;vibration reduction pile;isolation layer;plastic extrusion plate;construction 1工程概况 贵阳花果园办公1号楼项目位于贵阳市彭家湾 花果园大道,工程占地面积约12000m2 山底与山 顶均存在桩基基础,通过型钢混凝土转换梁将山顶 与山底主体结构进行连接.其中山顶基础因受力 形式存在两种类型桩基,分别为竖向受荷桩与抗剪 桩,靠近边坡为竖向受荷桩,靠近坡顶中心为抗剪 桩.该建筑物结构剖面如图1所示. 靠边坡一侧竖向受荷桩因距离边坡较近,为保 图1建筑物结构剖面 证边坡稳定,设计方面要求该处孔桩桩壁四周增设 Fig.1 Profile of the building 隔离层,隔离层需起到减震作用,以减少孔桩水平 风化岩层,岩层较厚.通过边坡稳定性分析发现其 方向荷载对山体边坡的影响.本工程微变形减震 稳定性较差,需进行硬化以保证边坡稳定性.在孔 柱隔离层采用宽10cm、厚5 cm XPS挤塑板拼装而 桩施工中对山体边坡的扰动极易造成边坡失稳,具 成,如图2所示. 有较大的安全隐患...
2013年1月下 施工技术 第42卷第2期 CONSTRUCTION TECHNOLOGY 9 山东省博物馆新馆悬挂式穹顶金属屋面施工技术 闫新郑 (郑州大学第一附属医院,河南郑州450052) [摘要]山东省博物馆新馆屋面为悬挂式弯顶金属屋面,屋面龙骨通过280根吊杆吊挂在外部花瓣形弯顶钢结构 上,屋面由蜂窝板装饰层、无机纤维喷涂保温层、防水层等组成,施工难度大、质量要求高.详细介绍了龙骨吊装、 防水层施工、保温喷涂、蜂窝板安装等施工工艺,经过科学组织、精心施工,确保了悬挂式穹顶金属屋面施工的质量 和工期,取得了良好的社会和经济效益. [关键词]钢结构;穹顶;屋面;悬挂式;施工技术 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2013)02-0009-04 Construction of the Metal Suspension Dome Roof of Shandong New Museum Yan Xinzheng (The First Affiliated Hospital of Zhengzhou University Zhengzhou He'nan 450052 China) Abstract:The roof of Shandong New Museum is a metal suspension dome whose keel is hung to the outer pedal-shaped steel dome by 280 links.The roof consists of decorative honeyb panel layer inorganic fiber spayed insulation layer waterproofing layer etc.These features imposed difficulties to the construction and high requirements to the construction quality.This paper introduces the keel hoisting and installing waterproof layer construction insulation spraying and honeyb panel installation in detail.Through scientific organization and precise construction the metal suspension dome roof was finished on schedule and the construction quality was satisfactory.Excellent social and economic benefits were gained with the proposed construction method. Key words:steel structures;dome;roofs;suspension;construction 1工程概况 山东省博物馆新馆工程(见图1)屋面结构独 特,外层为弯顶钢结构,其下为由280个吊杆悬挂 32福拱形梁、25道环向梁组成的钢结构网壳,网壳 上安装蜂窝铝板装饰面层、保温层、防水层及底层 板.蜂窝铝板装饰面层和底部的防水保温层构成 了本工程的悬挂式穹顶金属屋面,屋面为三维构 图1山东省博物馆新馆 件,属...