SPMT工法成功应用于北京昌平西关环岛桥梁改造工程

桥梁快速施工SPMT工法（简称：＂SPMT工法＂）,是近年来国内外研发应用的一种桥梁快速施工新技术。2011年,北京市政路桥养护集团自主创新研发的＂SPMT工法＂成功应用于北京昌平西关环岛桥梁改造工程,开创了这一具有国际先进水平的工法在我国自主研发及应用的先河。     

SPMT在桥梁上部结构置换工程中的应用

自行式模块化液压平板车(Self-Propelled Modular Transporters,SPMT)具有较强的承载力,在桥梁置换工程中可以显著提高工作效率,大大减少交通管制和临时绕道路程,降低桥梁改造对交通的影响,因此对SPMT的发展、工作特点及其在桥梁置换工程中具体应用步骤进行了详细的介绍,为快速建造桥梁提供了新的思路。     

全国市政工程行业施工工法推介展示 旧桥改造之桥梁同步顶升施工工法(升级版)

<正>旧桥改造之桥梁同步顶升施工工法(升级版)是一种适用于桥梁改造或新建工程的施工工法,可广泛应用于旧桥改造顶升、桥梁调坡改造、桥梁支座更换以及新建桥梁预制梁落梁或顶升梁等施工工况,跨河、跨铁路、跨公路桥梁及现浇箱梁,预制板梁、预制箱梁,钢箱梁等结构均适用。该工法由天津城建集团有限公司编制。该工法分别通过天津市城乡建设委员会及住房和城乡建设部的专家评审,被批准成为"2010年度天津市工法"及"2011年度国家级工法"。工法工艺原理简介     

全国市政工程行业施工工法推介展示 宽幅城市桥梁多箱分体顶推施工工法

宽幅城市桥梁多箱分体顶推施工工法是一种适用于城市架空广场建设、旧城区基础设施改造中的钢箱梁安装工程,以及跨越交通繁忙路段、河流等复杂工况下的钢箱梁安装工程的施工工法。该工法由北京城建道桥建设集团有限公司编制。该工法分别通过了北京市住房和城乡建设委员会及住房和城乡建设部的专家评审,被批准成为＂2009~2010年度北京市工法＂及＂2009~2010年度国家级工法＂。工法工艺原理简介宽幅桥梁主体结构由多片单体钢箱梁组成。     

新型落梁调整平台的设计与系统仿真

通过对比传统的预制箱梁定位技术,设计新的配合SPMT工法的桥梁架设落梁调整定位平台,可在落梁时对梁进行3个维度的空间调整。研究了平移力及系统的关系,确定平移形式及摩擦系数,并通过AMESim仿真和实验验证了设计的可行性,同时也确保桥梁架设落梁环节的准确定位。     

适应驮运架一体机及快速整体更换的桥梁上部结构分析

以SPMT工法为基础的驮运架一体机进行桥梁快速整体更换技术能最大限度地降低对城市交通的影响,近年来受到国内外广泛关注.新更换的桥梁结构如何适应并充分、有效利用驮运架一体机,是这项桥梁快速整体置换技术的重点和难点.本文从主梁结构材料、主梁结构体系、主梁结构断面形式三个方面分析满足整体驮运及快速更换的主梁结构特点,提出了整...     

自行式模块化平板小车在古建筑长距离移位工程中的应用

自行式模块化平板车(SPMT)目前广泛应用于大型桥梁预制构件、船舶、大型设备和货物等大体积、大吨位物体的运输作业中,但在房屋建筑的整体移位工程中应用很罕见,尤其是结构较为脆弱的古建筑。以徐州某古建筑长距离移位工程为例,探讨了SPMT运输古建筑的技术方案,并阐述了该项目的关键技术要点,为今后采用SPMT运输平移房屋建筑结构的类似项目提供有益借鉴。     

SPMT平板车组合模块分载过桥技术

结合扬州市瘦西湖隧道工程盾构机超重构件运输过程中通过扬州市内邗沟桥、漕河桥两座桥梁的工程实例,介绍了超重构件在不对桥梁进行加固的情况下,采用SPMT液压平板车组合模块分载技术顺利过桥,可供类似工程借鉴。     

对称型钢架及辅助支座组合加固旧桥墩柱施工工法

文章结合具体工程应用案例,以旧桥改造工程为对象,结合桥梁墩柱产生大尺度偏位的原因,对大偏位纠偏补强桥梁墩柱采用对称型钢架及辅助支座组合加固的施工工法。该工法提高旧墩柱的整体受力能力及抗震能力,也大幅提升型钢架的稳定性,保证安装位置与原支座一致,避免支座受压不均匀。施工工法适用于公路、铁路等工程中在役桥梁墩柱的加固及支座更换安装施工,具有技术可靠、质量可控、施工方便高效、节省工期等优点,在同类工程施工中具有借鉴意义。     

航道改造桥梁智能同步顶升施工工法简介

介绍了航道改造桥梁智能同步顶升施工工法的特点及适用范围,并对其工艺原理和操作要点进行了详细的阐述,实践证明:采用同步顶升桥梁上部结构解决了桥梁净空的不足,为航道改造提供了新思路。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。     

2005年北京办公物业市场七大趋势

趋势一:CBD区域写字楼集中放量从各区域规划方案上看,CBD区域多数项目在03～04年处于项目的报批手续及拆阶段,预计2005年正式推向市场,因此2005年CBD区域将成为北京市场供应集中的域,区域即将供应的项目有北京财富中心(二期)、金地国际花园、万达广场、SOHO尚都、万通中心、世纪财富中心、怡禾国际中心、光华国际等。除去未知项目,2005CBD写字楼办公面积的供应量为60万平方米左右。中关村区域经过一段时间的集中供后开始逐步放缓,2005年供应的体量相对较大的项目有中关村金融中心、新中关。金街区域可能开盘的项目只有2个:英蓝国际中…     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

Variation in property taxation in Tulsa

Conclusions It may be reasonably concluded from this study that the range of variation in these ratios of assessed to actual value are of a reasonable size for the great majority of cases. The frequency distribution of these sample ratios was not normal, however, as was assumed a process of this type would produce. On the other hand, the failure of the regression analysis to identify any significant variables which would explain these variations would tend to re-enforce the assumption that the fluctuations were indeed of a random nature.To sum it up in one paragraph, aside from a few extreme cases, the assessing process appears to give estimates which are more consistent than would be expected under the assumption that any errors would be of a random nature, but the regression analysis was unable to isolate any particular socioeconomic characteristics which would explain the variation which was present.Financial support for this research project was furnished by the University of Tulsa.