土体原位测试法在岩土工程中的应用

土体原位测试是工程勘察和检测的有效手段，通过统计其数据可以得出有效的经验公式，在工程中有一定的实用性。     

A comparative study of the design spectra defined by Eurocode 8, UBC, IBC and Turkish Earthquake Code on R/C sample buildings

Earthquake codes have been revised and updated depending on the improvements in the representation of ground motions, soils and structures. These revisions have been more frequently seen in recent years. One of the key changes in earthquake codes has been performed on the design spectra. In this paper, the design spectra recommended by Turkish Earthquake Code and three other well known codes (Uniform Building Code, Eurocode 8, and International Building Code) are considered for comparison. The main purpose of this study is to investigate the differences caused by the use of different codes in the dynamic analysis and seismic verification of given types of buildings located at code defined different sites. The differences in expressions and some important points for elastic and inelastic spectra defined by the codes are briefly illustrated in tables and figures. Periods, base shears, lateral displacements and interstory drifts for the analyzed buildings located at code defined ground type are comparatively presented.     

Site Response and Earthquake Design Spectra for Central Khartoum, Sudan

Khartoum, the capital of Sudan, is located at the confluence of White and Blue Niles. The city is heavily populated. Central Khartoum with its high-rise buildings is the center of governmental and business activities and is located on a strip adjacent to the Blue Nile. Geological and geotechnical data indicate that the subsoil conditions at Central Khartoum are characterized by alluvial deposits underlain by Nubian Sandstone at a depth of 25 m. The alluvial deposits, locally known as Gezira formations, consist of clays grading into silt and sand with depth. Macro seismic zonation of Sudan and its vicinities, developed by the authors, gave the ground acceleration at the bedrock surface. The effect of alluvial deposits in Central Khartoum on propagation of seismic motion parameters to the ground surface is investigated in this study. Correlations are proposed for pertinent cyclic soil properties such as shear modulus, damping, and shear wave velocity. The Equivalent-Linear Earthquake Response Analyses (EERA) Model was used to study the effect of local soil conditions on ground-motion parameters. In the absence of strong-motion records in Khartoum, available worldwide strong-motion records are used. Plots showing the time histories of ground motion parameters at the ground surface are obtained. The results indicate amplification of ground motion of up to 4.93. The predicted fundamental period of soils is about 0.5 s which is typical for these types of soils. The maximum spectral acceleration varied from 0.76 to 0.95 g. For design purposes, a response spectrum curve is proposed.     

欧美的小规模建筑设计事务所

2006年是我国承诺对WTO成员国实行全面开放的最后一年。为提升竞争力，国内上万家中小型建筑设计单位面临着改制的任务。未来的设计机构应以什么模式为主导，值得大家探讨。本文提供欧美一些小规模设计事务所的运作模式和经营状况，供参考。     

夏热冬暖地区建筑节能设计分析

本文根据夏热冬暖地区的气候特点，针对目前建筑节能设计存在的薄弱环节，分析了建筑围护结构的构造措施及其热工性能，提出在节能设计中应注意的问题。     

数字海图发行管理系统的设计与实现

为解决我国有关部门在数字海图发行中存在的数据及用户管理问题,通过对国内外现行数字海图发行管理机制的研究,提出了以海图数据封装发行模式代替目前直接复制数据的方式,开发和采用计算机软硬件结合加密的授权许可证技术,设计与实现具有可视化、集成化特点的新型的数字海图发行管理系统的方法。     

基于融媒体技术的地震专业知识服务系统设计与应用

基于融媒体技术的地震专业知识服务系统是服务社会工程科技、地震及相关行业的专业信息平台，具有信息集成、科学技术创新、集管理与决策于一体的特点。本文论述了该服务系统的设计模式特点、服务内容及对象、系统技术架构和功能，并对其未来应用及发展方向进行讨论。     

监测网顾及灵敏度准则的解析二类设计

变形体的变形模式确定的情况下,应用灵敏度准则进行监测网的设计;根据Ｔａｙｏｒ展式,导出了监测网顾及灵敏度准则的二类设计模型,并对其解算及模拟算例加以说明。     

关于推行岩土工程专业体制的思考与实例

岩土工程专业体制的核心内涵,是强调岩土工程勘查,设计,施工,监测,监理５个环节的整体和统一性。岩土工程师,不仅要为建设工程设计提供地质资料,而且还要积极参与或争取主持整个岩土工程项目的设计与施工,本文以实例阐明了其可能性与必要性。     

悬链线法在水平定向钻轨迹设计中的应用探究

铝孔轨迹设计是非开挖水平定向钻施工中一项重要内容。其最优化设计在国内已较成熟,但多数优化设计未从力学方面进行优化设计。针对这一情况,引入悬链线法来优化水平定向钻轨迹设计。通过悬链线法的计算可知,优化后的轨迹不仅有利于降低钻杆回转阻力和扭矩消耗,提高机械钻速,增长管道使用年限,同时与传统设计方法相比较,其计算出的轨迹长度也比传统圆弧轨迹长度略短,表明了悬链线法在水平定向钻轨迹设计上具有一定的优势。