浅谈沥青砼桥面铺装病害分析及改善对策

对于桥面铺装的一些工程经验和实践,本文进行了分析和总结。在钢筋混凝土桥柔性桥面铺装的早期,一些病害的产生及原因进行了分析和探讨,对于沥青砼桥面进行铺装的施工要点,本文也进行了一些阐述。     

建筑施工中的桩基施工工艺研究

文章对桩基施工中的大多工艺情况进行了阐述,对工序、方案等几点问题情况进行了详细的分析,对影响施工的因素进行了探索和了解,根据准备前的工序内容与实际方案中的具体可行技术,将工艺所要进行的流程信息进行梳理,对技术和工艺产生的价值联系进行了适当的分析,根据技术频率和影响因素进行了全面施工中内容把握。     

系统能耗测试评估

通过对系统能耗进行测试评估,可以了解系统水量和平衡程度,了解冷却塔,冷机,水泵锅炉等主要设备的效率和工况,评估系统的可用性,可靠性和效率。避免系统隐患,提升系统效率,降低能耗。对噪声和室内空气品质进行测试和评估,了解楼字建筑环境的健康程度。考察节能设施的效果,对暖通空调系统能耗进行统计,与其他楼宇和计算结果进行比较,对楼宇能源消耗进行评估并给出改进建议。对给排水系统的卫生性,可靠性,稳定性进行评估。评价景观以及绿化用水的管理和设计。测试评价楼宇控制系统的可用性和可靠性,排查系统隐患。评估照明系统,对照明能耗进行评估,考察节能措施的效果。     

钢结构稳定性设计方法的发展综述及分析

对钢结构稳定性设计方法的研究现状进行较全面的综述。分析相关计算方法存在的缺陷,对稳定性计算部分系数之间的关系进行研究,对高强钢的发展和趋势进行归纳和探讨,指出对高强钢结构稳定性计算的理论和方法进行研究是当务之急。     

监测评估理念下的高校党风廉政建设责任制考评机制研究

监测评估是对事物变化的过程及产生结果进行持续的监测,并通过定性和定量的方式对事物的性质进行测量和评价的行为。运用监测评估的理念对高校党风廉政建设责任制考评机制进行研究是一项新的尝试,通过对廉政建设责任制的考评环节进行定性和定量的监测及评判获取有效信息进而达到对党风廉政建设进行督促和纠正的目的。     

基于工程量清单的造价管理

对施工阶段和竣工结算的工程造价管理方法进行研究,指出在工程施工阶段的造价管理方法是对建设程序严格把关,合理地计算材料用量以及设备的总预算,重视现场施工的严加管理、对预算进行严格的控制,注重合同的有关条款和内容、对变更价款进行合理地界定;对工程竣工阶段的造价管理方法是对有关资料进行收集和整理,对合同条款进行仔细地审核,对于签证的内容是否合理和真实认真仔细地进行审核,对工程量进行仔细地核对。最后通过一个工程案例进行造价管理方式的研究。     

医疗建筑工程初步设计概算编制浅析——建筑结构和装饰专业概算编制

对医疗建筑工程初步设计概算的大体内容和编制流程进行了总结。对目前医疗建筑工程的特点进行了描述．对建筑和结构专业初步设计阶段设计深度和提供给技术经济专业人员的资料进行了描述。对建筑结构和装饰专业单位工程初步设计概算的内容和编制方法、技经专业人员工作内容和要点进行了总结。     

基于图像型的火灾烟雾检测技术研究

为了提高基于图像型火灾烟雾检测的准确性和实时性,提出了一种基于支持向量机的火灾烟雾检测方法。首先对图像进行增强处理,再通过累积差分法对运动区域进行检测,再基于烟雾的扩散性,对烟雾和干扰源进行初判,然后对提取的目标区域进行特征提取,最后基于支持向量机对烟雾和干扰源进行分类检测。仿真实验结果表明,该方法具有较好的鲁棒性和较高的识别率。     

医院信息化建设中云计算的应用

本文围绕医院的信息化发展和云计算的应用二者之间的联系进行探讨,通过对云计算技术的定义和特点加以介绍,并在云计算技术条件背景下对我国的医院进行信息化的现状进行论述,最终对云计算在医院信息化进程中的作用和实际运用的方式进行阐述。     

某梁桥检测技术和ANSYS模拟分析结合

结合桥梁工程检测实际,对桥梁检测技术和安全状态评估方法进行分析和研究,运用结构安全检测理论和ANSYS数值模拟,对浙江省内的某桥进行了承载力鉴定试验,并进行安全检测,同时对检测结果进行了全面分析,并对该桥的工作状况进行安全评估,进而提出了有益的结论。     

Contradictions in California’s orientalist landscape: Architecture, history and Spanish-Colonial Revival

Although Spanish-Colonial Revival architecture and place-names dominates Southern California’s landscape, one also finds examples of simulated Middle Eastern bazaars, references to Ancient Egypt, and the use of iconography from non-European Old World. While the region’s landscape is arguably a product of bricolage and postmodern sensibilities, this article looks at the history of ‘Orientalism’ in Southern California’s built environment. In particular, I am looking at the precedents for this seemingly contradictory use of the ‘Oriental’ in the region. The ‘Oriental’ as a sinfully seductive means of creating spectacle in the built environment is both glorified and demonized in popular discourse. For example, the ‘Oriental’ is celebrated in shopping malls, but demonized culturally and politically. However, it is in this contradiction that we can see how history and ideology has shaped the vernacular landscape. As such, this article will look at early twentieth century examples of the ‘Oriental’ in Spanish-Colonial Revival as a foundation to understand contradictions in the built environment, culture, and racial hierarchies.     

Pseudo-linearization procedure of nonlinear ordinary differential equations for large deflection problem of circular plates

The large deflection problem of the circular plate is considered in this paper. Generally, there are some nonlinear terms in the ordinary differential equation resulted. For example, one term takes the form (dw/dr)², where w(r) is the deflection function and r is the radial coordinate. Different from the previously suggested procedures, an alternative procedure is suggested in this paper. In the procedure, one factor dw/dr in the nonlinear term (dw/dr)² is replaced by a temporarily given function g(r). This means that the term (dw/dr)² is replaced by g(r)(dw/dr) where the function g(r) is obtained from the previous round iteration. A linear ordinary differential equation is obtained by using this substitution and we can make the relevant iteration. Therefore, the method is called a pseudo-linearization procedure in this paper. It is proved that the convergence range for the nondimensional loading is significantly elevated by using this approach.     

Optimal sizing of building integrated hybrid PV/diesel generator system for zero load rejection for Malaysia

In this research, an optimisation for building integrated hybrid PV/diesel generator system for zero load rejection for Malaysia is performed. The optimisation is performed considering a loss-of-load probability (LLP) less than 0.01. However, the daily averages of solar energy for Malaysia and a mathematical model of a hybrid PV/diesel generator system are used in this optimisation. The optimisation presented in this paper aims to calculate the optimum capacities of a PV array and diesel generator, which investigate the minimum system cost. An optimisation problem in terms of system units’ cost is solved graphically in this study. Moreover, the optimised system is compared to other energy source choices to highlight its feasibility. The recommended configuration of a PV/diesel system located in Malaysia is C_A = 1.2, C_DG = 0.3, while the optimum C_B is 0.1. The results of the optimisation show that a PV/diesel generator choice is more feasible compared to a standalone PV system or diesel generator system because it reduces the system cost by 35%.     

On the analytical model of beam-to-column semi-rigid connections, using plate theory

An analytical method is presented that can be used to determine the behavior of a particular steel beam-to-column extended end plate connection, in both linear and non-linear regions. This article demonstrates a closed form solution of the equations of deformation, for this type of connection. Besides, a step-by-step analytical procedure for establishment of the linear part of M-θ curve of this form of connection is developed. However, this technique can properly be extended to the non-linear regions, which is not considered in this article. The correctness of the results has been ascertained by a comparison, using non-linear finite element models as well as experimental approach; and very good agreement has been obtained. Furthermore, the writers believe that this method will efficiently serve design engineers in real design conditions.     

Environmental science and environmental philosophy — part 1 environmental science and environmentalism

Several recent critiques of Western, science‐based, technological society call for a shift away from the present paradigm of reductionism to one of holism. One manifestation of this would be the development of a new kind of science which is non‐interventionist, non‐manipulative, and much more environmentally aware.

The object of Part 1 of this paper is to assess the development of Environmental Science over the last twenty years, in order to test how far it fulfills the above role. Environmental Science is therefore considered in the wider context of Environmentalism, and its relationship to this larger social movement is examined.

As presently constituted, most U.K. Environmental Science/Studies courses are part of what O'Riordan¹ calls Technocentrism, a brand of Environmentalism which subscribes to concepts of rationality, management and control. As such it can be characterised as part of the environmentalism of the present social paradigm.

Part 2 of this paper, which explores the nature of (Environmental) Science in a possible future social paradigm, will appear in a future issue of this Journal.     

On the analytical model of semi-hinged steel connections, using plate theory

An analytical method is presented that can be used to determine the behavior of a particular steel beam-to-column top and seat angle connection with double web angles. This article demonstrates a closed form solution of the equations of deformation, for this type of connection. Besides, a step-by-step analytical procedure for establishment of the linear part of M-θ curve of this form of connection is developed. However, this technique can properly be extended to the non-linear regions, which is not considered in this article. The correctness of the results has been ascertained by a comparison, using experimental approach as well as different analytical technique; and very good agreement has been obtained. Furthermore, the writers believe that this method will efficiently serve design engineers in real design conditions.     

High temperature behaviour of polypropylene fibres reinforced mortars

The aim of this paper is primarily experimental and is intended to analyse the behaviour of two cementitious materials, before and after heat treatment: one unreinforced (i.e. without fibres) and the other reinforced (with polypropylene fibres).At room temperature and after heating up to 500 °C, the bending strength is improved by the presences of fibres. The residual young modulus is slightly higher for the fibres reinforced samples.As the temperature increases, the strength gain due to fibres inclusion is reduced. Beyond 500 °C, the bending strength is lower for the fibre reinforced cementitious material compared to those without fibres. Fracture energy is also improved for the fibre mortars at room temperature. At 400 °C this improvement decreases gradually with the introduction of polypropylene fibres. Beyond this temperature and due to the introduction of polypropylene fibres, the fracture energy is reduced.Another test is developed: rapid heating due to exposure to a flame. The temperature in the front side reaches in few seconds 1000 °C. At this temperature and after one hour of exposure, the opposite side reached 140 °C. After cooling, the punching shear strength of the fibre mortar is definitely weaker than of the mortar without fibre.     

A new and innovative look at anti-insulation behaviour in building energy consumption

This paper presents the findings of a case study with building simulation using EnergyPlus dynamic thermal simulation software, in which wall insulation was varied together with cooling set-point temperature in a hot and dry climate of Botswana. Against the established norm that adding wall insulation reduces annual fuel consumption, it is shown in this paper that this is not always the case: there are instances where adding wall insulation directly increases annual fuel consumption. Initial cost of insulation aside, as the cooling set-point temperature is gradually increased, the building switches from an “insulation reduces cooling load” to an “insulation increases cooling load” behaviour. In other words, the well established knowledge that “the lower the u-value the better” gets overridden by “the higher the u-value the better”. We termed this a “point of thermal inflexion”. Simple graphical demonstration of the existence of this point is presented in the paper. According to the findings, design engineers and building economics related professionals who quantify investment on insulation can get disastrous results if they assume that all buildings behave pro-insulation since a building may behave anti-insulation.     

Cities as control and command centres: Analysis and interpretation

Using the Forbes2000 list of largest corporations for 2010, revenues generated by companies are aggregated for the cities in which they are headquartered. From this data cities are ranked by sector and overall. The main finding is how overwhelmingly well Tokyo does in this empirical exercise. This is despite Japan’s ‘economic miracle’ stalling two decades ago. We use Jane Jacobs interpretation of the role of large corporations to explain this contradiction.     

Optimal design method for building energy systems using genetic algorithms

In this paper, a new optimal design method for building energy systems is proposed. This method provides the most efficient energy system, best combination of equipment capacity and best operational planning for cooling, heating, and power simultaneously with respect to certain criteria such as energy consumption, CO₂ emission, etc. Specifically for this paper, the authors apply this method to a sample building as a case study. The “Genetic Algorithms (GA)” optimization method, which can resolve nonlinear optimization problems, is adopted for this optimization analysis. Also its applicability is analyzed in a case study. In order to validate the accuracy of this method, the correct optimum solution based on comprehensive inquiries is also calculated. A comparison of the GA solution with the correct solution demonstrates fairly good agreement. The results show that the proposed method is sufficiently capable of determining the optimal design and has the potential to be applied to very complex energy systems with appropriate modifications.