弱膨胀性土地区氧化沟施工技术

氧化沟是我国目前对污水进行二级生化处理的核心构筑物,但某设施平面面积大,对地基不均匀沉降十分敏感,施工措施稍欠缺,就有可能造成底板开裂.文章简要介绍了弱膨胀土地区如何进行地基处理、主体结构如何防渗漏,供设计和施工参考.     

谈膨胀土地区建构筑物的设计与地基处理

首先分析了膨胀土的成因及基本特性,然后结合工程实例对膨胀土地区的建筑结构设计原则及地基处理的常用方法进行了分析总结,为今后膨胀土地区的建筑设计及施工提供指导。     

丘陵地区膨胀土地基处理施工技术探讨——溧水县殡仪馆膨胀土地基处理实例

溧水县新建殡仪馆场地内全是膨胀土,我们根据《膨胀土地区建筑技术规范》有关要求,结合以往工程实际和经验教训进行了调查,从地基处理、基础和主体施工、排水系统等多方面进行控制,采用弹性地基,基础施工释放能量,加强上部结构抗裂能力的方法,取得成功。该工程被评为2003年南京市"金陵杯"市优质工程,经十多年使用情况良好。     

关于膨胀土地质现状和地基处理方式

某工程地质存在膨胀土等不良地质结构,给工程地基基础设计提出了挑战.膨胀土会因为含水量的变化而发生相应的膨胀或收缩变形,导致地基土不均匀的隆起或下陷.工程综合采用换填非膨胀土,桩基或深埋的办法,闭水处理法等方法对多层建筑,地下车库,场地,管沟及构筑物进行处理,重点在开挖,基坑回填等施工阶段对基础采用防水措施,以期取得最佳的安全性和经济性.     

膨胀土地区建筑地基评价与基础处理

根据国家《膨胀土地区建筑技术规范》和本人18年来在蒙自地区施工的经验及收集到的有关资料，叙述膨胀土地基的变形因素、建筑场地划分、地基土的等级评价等方法，结合工程实践应用处理．取得了良好的效果。     

成都膨胀土地区强夯加固地基施工效果的研究

通过成都东郊某工地强夯施工实例，研究了成都地区膨胀土强夯施工加固效果，分别得出膨胀土地区强夯对沉降量、影响深度和地基承载力的影响成果，为成都膨胀土地区，强夯加固工程提供了参考指标。     

高水位软弱土地区高耸构筑物地基施工中的沉降控制设计

在地下水位较高的软弱土地区,高耸构筑物地基应以控制地基沉降为主。设计时不应将工程手册上的算例生搬到实际工程,而应从工程的实际情况出发,考虑多种不利情况进行地基包络设计。本文以工程实例说明了处在高水位软弱土地区的高耸构筑物,其地基设计时应考虑施工降水、基坑回弹再压缩、基底土透水与否等对地基沉降的影响。可作为类似工程设计时的参考。     

青兰高速公路膨胀土地基处理方案及施工控制

介绍了青岛至兰州高速公路（邯郸东段）膨胀土地基工程段的施工情况，在分析膨胀土地基处理的基本目的与对策的基础上，提出了膨胀土地基的处理方法，并讨论影响膨胀土处理方法的一些因素。     

膨胀土上灌注桩的施工

本文结合工程实例,总结了我国膨胀土地区采用灌注桩基础处理膨胀土地基,对施工场地、成孔工艺及施工质量等方面的要求。     

机场道槽区膨胀土地基处理研究

对机场中的道槽区膨胀土地基处理进行了分析,从膨胀土的变形规律与附加应力等进行了介绍,提出了桩网复合地基的方法,进行了膨胀土变形规律的研究,达到了机场道槽区膨胀土地基稳固的效果,解决了机场道槽区膨胀土的地基处理问题。     

污泥制砖存在问题浅析

污泥制砖符合国家的环保政策,但在技术方面还待进一步创新和突破。为此分析了污泥制砖在技术方面、环保方面和社会大众认可方面存在问题及相应的改进措施。     

干旱区绿洲环境下的新疆小城镇建设投资

一、研究区域基本现状新疆地处欧亚大陆腹地,地貌轮廓表现为“三山夹两盆”,山地与平原的面积大致各占50%,镶嵌于戈壁沙漠的绿洲仅有7万平方公里。新疆土地面积166.49万平方公里,占全国总面积的六分之一。气候干旱,荒漠广布,是中国最大的干旱区,是亚洲干旱核心区,也是世界上著名的干旱区之一。水资源短缺,生态极度脆弱。新疆2004年底有1950万人,人均GDP已经超过了1000美元,城镇化进入了快速发展阶段,特别是小城镇的发展速度较快。但新疆特殊的干旱区绿洲环境,使得小城镇的发展存在许多问题。一是城镇规模小而散,基础设施配套差,城镇集散和…     

Levels of manganese in the urine of female farmers in non-polluted regions in Japan

Nearly 1500 urine samples were collected from female farmers in eight regions widely scattered in the islands of Japan in the winter of 1987-1988. The samples were analysed for manganese by wet ashing and flameless atomic absorption spectrophotometry under strict quality control. The values observed after adjustment for a specific gravity of 1.016 were distributed log-normally with a geometric mean of 0.65 microgram/l and a geometric standard deviation of 2.47. There was no effect of aging or any effect of smoking on the urinary manganese concentration. The inter-regional difference may be present but not yet conclusive. As no sex difference was observed in a previous study, it may be possible to deduce that the value may possibly stand for the "background" level of both men and women, either smoking or non-smoking, among the general Japanese population. The observed value is discussed in comparison with values reported in the literature.     

Typification of Fires in Buildings in Spain

Although the Dirección de General de Protección Civil (DGPC), an agency of the Spanish government, has been responsible for the collection of data and the statistical analysis of fires since 1985, it has not as yet issued any reports. It is true that a couple of studies have been made, but in neither case did they use a standardized methodology but relied simply on the heterogeneous information provided by the fire brigades which cooperated in the studies. At that time Spanish fire brigades did not have special units for professional fire investigation, nor was the information derived from standardized methodologies suited to research purposes. In addition, information was extremely scarce and basic, focussed only on the fire, the use of the building and personal data of the victims. In this context, the project for a Fire Investigation Unit in the Fire Brigade of Málaga (the sixth largest Spanish province in inhabitants) was set up. Although inspired in the methodologies used in the USA and in the UK, the aim was to create a customized methodology for the first scientific investigation of fires in Spain. Our research was conducted in 2007. Using the methodologies of the USA and the UK, our own methodological approach and the Spanish regulations, we drew up a questionnaire with 110 variables arranged into 6 modules. We studied 96 fires out of the 154 emergency fire calls received in 2007, having omitted some emergency calls for various reasons. Our results revealed that it was necessary to generalize the installation of fire extinguishers in residential buildings, to train the general public in the use of these devices, to promote the use of fire and smoke detectors in residential buildings, to encourage the inspection and control of old electric installations and to monitor the new installations, to generalize the implementation of emergency and evacuation plans and to design new systems and materials for the cabinets where hand-held extinguishers are stored.     

分光光度法测水中余氯

介绍了用双硫腙分光光度法测定水中余氯的新方法，阐述了其测定试验过程，根据试验结果显示，其结论符合国家标准，表明该方法可用于自来水等样品中余氯含量的测定，结果比较准确。     

Intersections of inequality in homeownership in Sweden

Abstract

Inequalities relating to ownership of housing have become a major issue de jour in many Western societies. This article examines how the distribution of homeownership in Sweden relates to two factors widely seen as significant to such inequalities, namely parental tenure status and place of birth. We use longitudinal registry data to examine the bearing of these two factors on individual-level tenure progression since the beginning of the 1990s for persons at different stages of their housing careers. We extend existing understandings of Swedish homeownership patterns by demonstrating that inequalities relating to place of birth and parental tenure intersect with one another in ways that substantially advantage certain subgroups while disadvantaging others, and by demonstrating that experiences of entry into homeownership have in recent years been changing in markedly different ways for these different subgroups. Overall, Swedish homeownership inequalities, far from dissipating, appear to be hardening along existing lines.     

莳花在城市绿化中的应用

目的:花化、香化、彩化已成为城市园林绿化的主要趋势,也是为满足人们对环境要求越来越高的一种心境。方法:选择采用莳花能表现出品种繁多,色彩艳丽等不同的方式,从而能在很大程度上丰富了植物造景的层次感要求。结果:能使其达到美化环境、增添节日气氛、提高绿化品质等方面有着突出的作用。结论:莳花造景对城市的美化可达到立杆见影效果,从而提高城市的形象和品位。     

日本城市浅层地下空间利用的新成就

本文结合日本川崎市站前广场和神户市哈巴兰德地区的立体化再开发，分析介绍当前日本浅层地下空间开发利用的成就和特点。     

遗传算法在边坡稳定系数计算中的应用

边坡稳定性的关键问题是确定最危险滑动面(潜在最危险滑动面)和边坡的稳定系数。国内外一般是采用先假定边坡滑移模式,然后近似确定最危险滑动面,再求近似的边坡稳定系数的方法来分析边坡的稳定性,但假设的边坡滑移模式难以反映边坡滑移的实际状态。因此本文探索利用遗传算法搜索最危险滑动面,并得到最小稳定系数及对应的最危险滑动面曲线,取得了较好的效果。     

地质情况复杂地区高速公路隧道地质预报研究

针对地质情况复杂地区垫邻高速公路设计、施工中的具体问题，从地质预报的方法、原理方面入手，对地质情况复杂地区高速公路隧道施工中的地质超前预报工作进行了深入的研究，在分析归纳的基础上，提出合适的工作方法。