试论高层建筑的钢结构施工技术

钢结构同混凝土结构相比的优缺点,再从钢结构施工过程中主要施工环节为切入点对施工技术进行论述,得出只有严格按照施工工艺要求施工才能得到预期质量效果的结语。     

论电力建设与节能减排的博弈

文章阐述了节能减排的定义和电力建设的概况,通过对比"十一五"计划前后电力建设实施节能减排政策的成果以及展望"十二五"规划中节能减排在电力建设中的目标,指出了出电力建设与节能减排之间既对立又相联的博弈关系。     

Procuring complex performance in construction: London Heathrow Terminal 5 and a Private Finance Initiative hospital

This paper takes as its starting point the fact that complex projects, interpreted as multiple dependent interactions between many stakeholders over time, challenge traditional procurement practices based on the serial purchase of discrete components. The paper examines how the procurement management of such projects – procuring complex performance – can be conducted. The paper utilises two contrasting case study examples of high-profile UK construction project procurement. The findings suggest that the choice of mechanisms or interfaces for the governance of upstream supply relationships critically relates to subsequent performance. The theoretical contribution is a fusion of procurement literature with the influential CoPS literature.     

A regional forecasting model for construction activity

This paper presents a new, comprehensive and detailed model of construction activity. The model is intended primarily for forecasting applications. The model generates forecasts of new construction starts for each of the 50 states of the United States. Forecasts are made for 29 types of structures. The paper presents evidence that the structure of the determinants of construction activity varies across regions within the United States. Thus, prior models of construction, based only on national time-series data, may be subject to aggregation bias. Evaluation of the model's forecasts indicates that the model outperforms simpler forecasting methods.     

循环经济与生态城市建设:理念与实践

循环经济和生态城市建设的耦合点在于:循环经济是城市社会在生态文化支撑下,转模仿自然生态,自觉自我组织、自我调整以与城市自然环境相协调的一种技术范式.文章提出了在生态城市建设中,可资借鉴的循环规划及其制度支撑的实践模式.     

Modeling and forecasting U.S. public construction

This paper extends Lin's flexible accelerator model of dynamic investment behavior of U.S. public construction by relaxing two of the underlying basic assumptions: (1) the coefficient of adjustment is allowed to vary with the level of government expenditure and (2) the regression coefficients are treated as randomly changing over time rather than being viewed as fixed. The new models afford a better explanation of the behavior of U.S. public construction. Importantly, the forecasting ability of the variable-coefficient-of-adjustment model is tested for the three-year period beyond the sample period and compared to both the Lin's original and ARIMA models. It is found that this new model gives better forecasts of public construction for ten quarters ahead. On the basis of the chi-square test of model stability and the mean squared error, it is concluded that the model with variable adjustment coefficients is a better abstraction of economic reality and improves forecasting accuracy.     

生态网络城市建设模式及其评价指标体系

生态城市建设的一项重要内容是对其建设水平和效果的定量评价.本文通过对生态城市和城市圈相关理论的分析,提出了生态网络城市的建设模式,构建了生态网络城市评价指标体系结构模型.在此基础上,结合指标选取原则,从生态城市的发展状态、生态城市的发展协调性和生态城市的发展潜力三个方面建立了生态网络城市的评价指标体系.     

基于单项Partnering模式的建设项目供应链

借鉴Partnering模式,将原有的供应链模刑进行完善,建立基于Partnering模式的建设供应链模型,从而改善业主、设计商、承包商的关系,使项目各参与方达到共同赢利的目的。     

A model for irreversible investment with construction and revenue uncertainty

This paper presents a model of investment in projects that are characterized by uncertainty over both the construction costs and revenues. Both processes are modeled as spectrally negative Lévy jump-diffusions. The optimal stopping problem that determines the value of the project is solved under fairly general assumptions. It is found that the current value of the benefit-to-cost ratio (BCR) decreases in the frequency of negative shocks to the construction process. This implies that the cost overruns that can be expected if one ignores such shocks are increasing in their frequency. Based on calibrated data, the model is applied to the proposed construction of high-speed rail in the UK and it is found that its economic case cannot currently be made and is unlikely to be met at any time in the next decade. In addition it is found that ignoring construction uncertainty leads to a substantial probability of an erroneous decision being taken.     

浅议系统内小型水电工程建设项目管理

建设单位和施工单位隶属于一个集团公司的建设项目管理是我国在深化改革发展中出现的一种新型模式,同时,小型水电站的开发建设又有与其他大中型水电站建设不同的特点。文章从实际出发,总结了这种背景下建设项目管理的教训,并提出建议,与同行共同交流。     

高速公路建设项目质量-进度卓越管理的概念界定及优越性分析

文章针对高速公路建设项目管理问题的现状,结合高速公路固有的特性,分析了现行高速公路建设项目质量和进度的相关性,将卓越绩效管理理念引入到高速公路建设项目管理中,尝试性的提出了"质量-进度卓越管理"的概念,给出其内涵,并对高速公路建设项目质量-进度卓越管理的特征和优越性进行了一系列的论述,构建了质量-进度卓越管理实施程序框架,提出了实施此模式需要解决的问题,这对改进高速公路建设项目的管理,提高其有效性和可操作性有很强的现实意义。     

国外乡村建设的路径分析及启示

很多发达的资本主义国家和地区也曾有过乡村建设的历史。立足国情,它们各自采取了不同的反哺切入点、发展路径和战略模式。其中,政府的巨大推动作用、民众的广泛参与、体制的保障与革新以及中介组织的培育等在各国的乡村建设中都发挥了关键性作用。借鉴国外乡村建设经验,提出当前我国的新农村建设应赋予农村领导机构以明确主权、开展以县域单元为核心的乡村系统研究、最大化地发挥农民主体性作用。     

基于建筑工程的绿色施工管理

环保作为当前备受关注的主题,不仅关系到自然环境,也涉及人们生活的诸多方面,建筑工程也不例外。随着我国建筑施工业的不断发展,逐渐注入环保的理念。文章立足于建筑施工的基本理论,对建筑施工的绿色施工管理进行阐述,向社会宣传绿色环保的建筑施工管理方式。     

挤扩支盘灌注桩技术及其应用研究

挤扩支盘灌注桩是最新的一种土建施工方法,为了能够很好地推广应用此方法,文章首先对分析了挤扩支盘灌注桩的结构模型和其形成机理,其次对其桩身的受力原理进行了详细分析,然后结合施工案例得出了挤扩支盘灌注桩在施工过程中的注意要点和挤扩支盘灌注桩的优点。     

4D CAD在大型桥梁施工进度管理中的应用

4DCAD是三维CAD模型加上时间维形成的新技术,是CAD技术在工程施工管理领域的新发展。文章在对4DCAD技术的深入研究的基础上,建立了大型桥梁施工进度管理的4DCAD模型,并开发了相关的系统,该系统可提高施工管理的信息化水平,并可提供更多的管理信息,为项目的管理提供客观、科学的依据,具有一定的现实意义。     

Three-rate property taxation and housing construction

This paper examines the effect of property taxation on housing construction. In 2001, Finnish municipalities were allowed to levy an extra property tax on undeveloped land zoned for housing. Municipalities that adopted the new tax instrument have a three-rate tax property tax system with different tax rates on land before development, land after development and buildings. The remaining municipalities have a two-rate system with a uniform land tax and a building tax. A theoretical model of decisions by landowners suggests that the pre-development land tax ought to lead to faster development, but also the density of development may be affected. In the two-rate system land tax is neutral. The empirical results suggest that landowners respond to the tax incentives. Municipalities that adopted the three-rate property tax system saw an increase in single-family housing starts of roughly 12 percent.     

基于熵技术的农村公路施工质量综合评价

鉴于农村公路施工质量评价所存在的模糊性和随机性的特点,在建立涵盖整个施工质量影响因素为一级指标的施工质量综合评价指标体系的基础上,运用模糊数学理论,建立了二级模糊综合评价模型,借用熵的概念计算客观权重的方法,提出了施工质量模糊综合评价的方法。应用该方法对某农村公路项目质量进行评价,得出其评价结果为"良好"。最后,对该方法进行了定量解算,从而提高了施工质量评价的客观性和科学性,通过对结果的深入分析,可找出施工过程中存在的不足之处,从而为目标明确、有的放矢的改进施工质量提供理论依据,具有一定的实用价值。     

预应力混凝土空心板施工工艺研究

介绍先张法预应力混疑土空心板施工工艺和质量控制，探讨预应力施工工艺和张拉工艺，为预应力梁能在施工中确保有效预应力和达到最佳变形提供参考。     

先导施工钻探在岩溶区桩基施工中的应用

国内桥梁的建设日趋增多,在灰岩等复杂地质区域建设的桥梁也越来越多,文章以工程实例为证,详细阐述了先导施工钻探技术在岩溶区桩基施工中的应用与效果,建议在岩溶区桩基施工时对该技术予以推广使用,更有利于总体工期和施工安全。     

公路主枢纽城市规划建设问题探讨

通过对已有公路主枢纽与城市的概念理解,对公路主枢纽城市进行了定义,并分析了它们之间的关系,同时在公路主枢纽城市的规划建设问题上,利用与公路主枢纽规划和城市规划的对比说明进行阐述.最后以菏泽公路主枢纽城市建设为例,就公路主枢纽城市规划建设中的问题进行探讨,并提出几点建议.