FDS和羽流模型在大空间建筑火灾中应用的研究

介绍了几种常见的轴对称羽流模型及其使用条件,通过数学计算和FDS模拟运算对几种模型在大空间建筑中的羽流质量流量、相同清晰高度下热烟气层的温度进行了对比分析,总结出大、小面积火源条件下,更为适用于大空间建筑的模型,为大空间建筑中的防排烟设计提供了参考。     

方言景观

1.精神·舞台·方言景观 我本来对这个大会充满了感谢之情,但也不无遗憾之意,我认为缺少一个词就是"爱",终于马晓暐先生提到了.景观行业的精神,我特别理解的就是俞孔坚博士的忧心忡忡.     

道桥用SBS改性沥青防水卷材的研制

在生产普通SBS改性沥青防水卷材的基础上运用正交实验的方法对所选原材料进行优化组合，成功研制出道桥用SBS改性沥青防水卷材。经检验，其各项指标均达到或超过国家建材行业标准JC/T974--2005的要求。     

Interaction between pile foundation and soil

Problems of interaction between a single long pile (more than 20 m) or a group of long piles as component parts of a pile foundation and soil are discussed on the basis of a new geomechanical model. The settlement of a pile or group of piles is caused primarily by shear deformations of a soil mass of limited area and depth, and also as a result of deformations of the mass beneath the lower ends of the piles. __________ Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 2, pp. 2–7, March–April, 2007.     

Influence of domestic sewage leakage on the collapse of tropical soils

In the studied region, 35% of the soil collapses are related to leakage from sewage ducts. The paper describes the soils from this part of Brazil and a series of laboratory tests undertaken using water and domestic sewage fluid as the wetting agents. It is considered that the presence of soaps and detergents as recorded by the sodium concentration facilitates the densification of the soils and hence has a major effect on the surface settlement/collapse.      

Urban spatial pattern as self-organizing system: An empirical evaluation of firm location decisions in Cleveland–Akron PMSA,Ohio

Economic models of urban spatial patterns have largely ignored complexity as an attribute of urban systems. Complexity theorists on the other hand have not made sufficiently serious and sustained attempts to verify empirically the relevance of complex systems models for urban spatial patterns. This research bridges this gap by simulating the evolution of an urban employment pattern as a self-organizing complex system and seeking its empirical validation. It estimates the model’s parameters by using firm data aggregated to the level of municipalities in Cleveland-Akron Consolidated Metropolitan Statistical Area in Ohio. The interaction among four parameters, forces of attraction and dispersion and their respective rates of dissipation with distance, are modeled as a two-dimensional complex system. The research compares the states of the modeled system with empirical data to present viable methods for verification, calibration and validation of such models.

---

     

武汉阳逻大桥南锚碇深基坑信息化施工中的监测技术

武汉阳逻长江公路大桥南锚碇深基坑开挖所处佗置岩土条件复杂,开挖深,支撑道数多,施工难度大,且没有前期经验可供参考,必须在施工组织设计中制定、存实际施工中实施严密的监测控制系统,对监测数据及时进行分析处理。该基坑开挖信息化施工中,时刻以监测数据为依据,及时对施工措施、施工顺序和施工步骤进行动态优化调整,保证了施工顺利进行。     

公共建筑供热节能分析

本文针对公共建筑采取值班采暖运行方式进行了节能分析,公共建筑应实施供热计量收费,同时根据正常供暖与值班供暖的时间关系,供热外网实施24h供热调节,使公共建筑即节能又经济,促进全社会的建筑节能。     

对加工中心托盘自动交换装置及其编程的分析探讨

本文对托盘自动交换装置APC的组成和工作过程进行了研究．对其工作原理和具体编程方法进行了探讨。