超静定型钢桁架满应力设计中压杆稳定许用应力的简便算法

压杆稳定许用应力的计算,是超静定型钢桁架满应力设计的技术关键,迄今未很好解决。在离散变量连续化处理的基础上,导出了各种截面型钢压杆在每次迭代计算中稳定许用应力的通用计算公式,该公式形式简单,极易在程序中实现,供结构设计工作者参考。     

SOLVING AN URBAN RIVER EROSION PROBLEM ON THE TILMORE BROOK, HAMPSHIRE (UK)

The Tlimore Brook, In Hampshire, typifies the Impact of new housing development that has taken place In phases over the past 20 years or so, on a river corridor. However, the issue is not one of flooding, because the channel itself had been straightened and deepened in historical times and had been adjusted further by down-cutting; thereby forming an over-large channel sufficient to contain flood flows. Perhaps rarely for lowland Britain, the key problem was that of erosion, threatening adjacent properties. This paper describes the nature of the erosion problem and the subsequent geomorphological design to mitigate it. A key unique feature of this project was the extent of backfilling required, over the entire length, to raise the over-deep channel bed. The project was constructed in 2003.     

Development of a New Water Supply for Fort William

The development of a new water supply source for the Fort William/Corpach and Caol area in the West Highlands of Scotland is described with particular reference to the hydrological and groundwater investigations. Attention is given to a study to reduce the level of leakage and to the analysis of improvements in water quality between well and direct river abstraction. The effect on fisheries in the River Lochy is described, and a preliminary design identified for the recommended scheme.     

Trade Effluent Control: Prospects for the 1990s

The proposed privatization of the ten regional water authorities together with the accompanying reorganization of water pollution control responsibilities between the new National Rivers Authority and Her Majesty's Pollution Inspectorate, as well as the ever tightening environmental standards for the aquatic environment emanating from Brussels and from general environmental pressures, means that dischargers of industrial effluents can expect major changes both in the cost of disposing of their effluents and in terms of the legislative controls which will restrict their content.
The paper examines the various factors which will influence the management of trade effluents in the 1990s and endeavours to give some indication of what the future holds both in terms of disposal costs and environmental regulation from the point of view of the discharger.     

盾构掘进参数与地面沉降控制

在施工过程中依据监测结果，不断修正和选取最佳掘参数，以保证隧道工程质量，控制地面沉降。     

智能化住宅小区控制总线分析

主要介绍智能化住宅小区的控制网络、控制总线,详细分析了当前流行的控制总线的特性和各自的优缺点。     

浅谈施工企业的责任成本管理

基于对责任成本管理的理解 ,阐述了成本管理的思路 ,通过介绍责任成本的测算和下达 ,反映和控制 ,分析和评估 ,系统描述了责任成本管理的全过程 ,指出加强责任成本管理是施工企业减支增效的重要经营战略     

广州大学城医院直加机房大体积混凝土施工

结合工程实际情况，分析了大体积混凝土裂缝控制措施及温度的计算，从温度控制、配制、浇筑、运输等方面介绍了直加机房大体积混凝土施工技术，以减少混凝土裂缝的产生。     

高速公路沥青路面的新技术

对SMA路面的概念进行了简单说明，详细阐述了SMA路面的性能、配合比设计及其目标配合比设计的检验步骤，并对SMA路面的施工作了详细分析，最后指出如何对SMA混合料进行质量控制。     

浅谈地下室化学灌浆补漏与内防水施工

针对工程建设中经常出现的地下室渗水、漏水等质量通病，介绍了对高层建筑地下室大面积漏水进行全面技术处理的施工方法，并对其施工效果作了分析，达到了治漏与防水综合治理的效果。