国内推广应用高性能混凝土分析报告

混凝土的过早劣化,给社会造成了巨大的危害,本文应用工程实例分析在特定环境采用高性能混凝土比普通混凝土的优越性,同时呼吁更多行业重视混凝土的高性能化,共同创造节能型的社会环境.     

高密度电阻率法在滑坡识别中的应用

高密度电阻率法在探测不良地质现象的过程中，能获取关于地电断面结构特征的大量信息等特点，因而它是地质灾害勘查中有效的地球物理勘查技术。在滑坡治理中，通过高密度电阻率成像探测法查明了滑坡性质和参数，根据探测结果，分析了该滑坡发育历程和破坏特征，对该滑坡的工程稳定性及其对环境的影响进行了评价，并提出相应的治理对策。     

高性能膨胀混凝土用特种胶凝材料的研究

研制了2种用于高性能膨胀混凝土（HPEC）的特种复合胶凝材料，并研究了复合胶凝材料中各组分对材料整体膨胀性能和强度性能的作用规律，考察了材料的膨胀与强度发展的协调性，最后对材料水化体系的显微结构进行了扫描电镜的观察与分析。     

Decision modeling and acceptance criteria

This paper is partly tutorial by presenting well known classical decision theory in a slightly untraditional form, but it does also present thinking and results that have not been published in the engineering literature before. The paper introduces the mathematical modeling basis for rational formulation of decision criteria and public acceptance criteria connected to risk analysis of technical operations that may endanger human life and property. Public restrictions on the decisions concerning the design, construction and managing of the technical operation have in the past been imposed on the basis of the frequency and severity of experienced adverse events. No clear rationale to decide how restrictive the public should be in setting a boundary for allowable risk seems to have been applied. To clarify this problem, focus is on the difficulty of simultaneously having two decision makers, the owner that tries to optimize the net gain of the operation, and the public that has somewhat different preferences than the owner, but also strong interests in the success of the owner. The principles of rational decision are needed for appreciation of the problem. Recognizing that there is an insurance compensation value of a human life and a public money equivalent of a human life, where the last value usually is considerably larger than the first value, it is possible from the decision analysis to determine an upper limit that the public should impose on the ratio of the owner's expected loss rate to the expected gain rate. The public money equivalent of a human life is assessed by use of a recently in (Nathwani JS, Lind NC, Pandey MD. Affordable safety by choice: the life quality method. Waterloo, Ontario, Canada: Institute for risk Research, University of Waterloo, 1997) suggested Life Quality Index (LQI) that combines wealth in terms of Gross Domestic Product per person, life expectancy at birth, and yearly work time into a single number. The philosophy behind the published evaluations is that the prevention of a loss of a life is counteracted by a cost such that the LQI remains unchanged (Skjong R, Ronold K. Societal indicators and risk acceptance. In: 17th International Conference on Offshore Mechanics and Arctic Engineering, number OMAE98-1488. ASME; 1998; Rackwitz R. Optimization and risk acceptability based on the Life Quality Index. Structural Safety 2002;24:297–331.).     

我国当前的建筑节能形势分析

当前,我国能源消耗持续增加,能源利用效率处于较低水平,高能耗带来的能源环境问题日益突出.我国政府历来重视能源节约和资源综合利用工作,针对当前的能源形势,仔细研究了我国的建筑节能政策和要求,并指出我国建筑工程必须按照建筑节能设计标准的要求进行设计与施工.     

混凝土环形试件早期收缩试验方法详述

混凝土的收缩问题是当今高性能混凝土收缩研究的热点问题之一。环形试件收缩试验方法是一种新的、比较简单的混凝土收缩测试方法,详细讨论了试验装置、试验方法、试验原理及可行性。新的试验方法能够用来研究高性能混凝土的自由收缩和不同约束状态下的收缩,克服了传统环形约束试验方法不能提供应力谱的缺点,具有轴向约束收缩试验的某些特点。     

山区高墩桥梁稳定性分析

针对广东省山区高速公路中常用的高墩结构，建立有限元模型，系统的对高墩结构施工过程中和成桥之后结构的稳定性进行了较为系统的分析，总结出了相应的结论，对山区高速公路高墩桥梁的设计和施工有一定的借鉴意义。     

粗骨料对高性能混凝土抗压强度的影响

抗压强度为３０ＭＰａ的砼中，砼受压破坏时粗骨料是完整的没受到破坏。而高性能砼则由于砼强度比较高，砼破坏时粗骨料几乎完全断裂破坏。本文对不同品种的粗骨料在砼中的体积含量、最大粒径对砼强度的影响进行了试验，并根据试验结果得到了数学模型，用以评价不同品种粗骨料的性能     

半干污泥焚烧工程设计分析及探讨

为减少污泥运输体积,减轻污泥运输对环境的影响,污水厂出厂污泥处理趋势逐渐由含水率80%的脱水污泥转变为含水率40%~50%左右的半干污泥。上海市石洞口污泥处理二期工程采用“脱水干化(石洞口本厂污泥)+焚烧及烟气处理(泰和及石洞口污泥)”工艺,是针对半干污泥的焚烧工程。半干污泥接收储运采用“接收坑+抓斗提升”的方式,半干污泥焚烧产生的系统富余热能用于加热污泥调蓄池内的污泥,改善污泥浓缩脱水效果。在此基础上,进一步探讨了选址相对独立的半干污泥焚烧项目需注意的污泥泥质控制、热能利用方式及炉温控制措施等相关因素。     

预应力锚索的长度与预应力值对其加固效果的影响

根据模型试验结果，重点分析了块状岩体中锚索长度及预应力值大小对其加固效果的影响，并给出了影响范围及特征，为进一步分析预锚加固作用机理和探讨预锚加固设计方法提供了基础性依据。