地铁3号线改造工程上海站西站厅主体结构受力计算分析

全面介绍了复杂条件下的地铁地面车站改造及新建地下换乘大厅的结构设计,包括对汽车等效均布荷载、非荷载作用和地下室顶板作为上部结构嵌固端的处理,对"建桥合一"的结构采用三维空间有限元计算分析,为地铁车站的结构改造设计提供了重要的参考。     

真空联合堆载预压施工技术

青岛市滨海公路(南段)为海边虾池或吹填淤泥段,软基处理在工程建设中起着重要作用。本文介绍了真空联合堆载预压施工技术的特征、施工工艺。针对实际工程情况,施工中采取了一系列措施使路基强度和稳定性达到要求。     

大跨度连续箱梁桥新旧结构连接效果评定试验研究

以广佛高速公路湖州大桥主桥的拓宽桥与原桥新旧结构连接试验为工程实例,介绍了连接效果评定试验的思路、测点布置、加载方式,及主要评估结论,供同类结构试验参考.     

On the shear strength of reinforced concrete deep beam with web opening

An objective of this study is to establish the shear strength of reinforced concrete deep beam with web opening. Eighteen beams were tested with the variables of the steel ratio and strength of longitudinal bars, concrete strength, and shear span‐to‐depth ratio. It was observed that the opening is strengthened by longitudinal bars but the load‐carrying capacity of deep beams with openings can be largely improved by the increase in concrete strength. Modifying the softened truss model derived by Mau and Hsu and utilizing the results of this experiment carried out with the variables of concrete strength, cross‐section size, shear‐span‐to‐depth ratio, and the strength and steel ratio of longitudinal bars, this study proposes an improved model to predict the shear strength. Copyright © 2006 John Wiley & Sons, Ltd.     

浅谈图底关系理论在城市设计中的应用

图底关系理论是美国康奈尔大学的罗杰·特兰西克教授在《寻找失落的空间》一书中提出的一种有关城市设计的重要理论。本文着重探讨了该理论在城市设计中的应用前景,并通过实例阐述了该理论在城市空间总体层面和城市空间具体层面上的应用价值和方法。     

Selective adsorption of p-chloronitrobenzene from aqueous mixture of p-chloronitrobenzene and o-chloronitrobenzene using HZSM-5 zeolite

The selective adsorption of p-chloronitrobenzene (p-CNB) using zeolite as the adsorbent from an aqueous mixture containing p-CNB and o-chloronitrobenzene (o-CNB) was investigated. The maximum adsorption amounts of p-CNB in HZSM-5 zeolite were found to be approximately 4 molecules per unit cell (mol/uc) at all adsorption temperatures investigated. The maximum adsorption amounts of o-CNB in HZSM-5 zeolite were, however, markedly lower than those of p-CNB at different adsorption temperatures. Diffusion results revealed that the diffusivity of p-CNB at 300K was about 100 times higher than that of o-CNB in HZSM-5 zeolite. The remarkable difference in the adsorption amounts and diffusivities between p-CNB and o-CNB resulted in separation factors of 463.6, 96.8 and 21.9 for p-CNB at 278, 300 and 323 K, respectively, indicating a selective adsorption of p-CNB in HZSM-5 zeolite from the aqueous mixture of p- and o-CNB.     

Object–Oriented Enterprise Modeling and Simulation of AEC Projects

In this paper we describe an object–oriented framework for developing enterprise models of Architecture, Engineering, Construction projects, and a methodology for formalizing these models such that they can be used for discrete event simulation of information processing and coordination in project execution. The simulation results can be used to predict the probable effects of carrying out proposed changes in planning and managing projects.
In our enterprise modeling framework we represent engineering design projects in terms of deliverables (requirements and solutions), plans (activities and process relations), and organization (participants and organizational relations). The resulting project model is the starting point for identifying coordination requirements between project team participants. Our methodology uses matrix techniques derived from qualtiy function deployment (QFD) to identify interactions between project requirements and solutions and calculate measures of product complexity . We then describe information flow between project activities in a similar matrix and calculate measures of process uncertainty . Finally, we identify the responsibilities of project team members and use a matrix to point out organizational interdependencies .
We apply our framework and methodology to model and simulate engineering design for a major extension of an electrical power substation. Our simulation results demonstrate how project performance is contingent on the fit between the project policies and the objectives and preferences of the project team.     

粉喷桩加固软土地基施工质量控制

针对淮盐高速公路建设中大量采用粉喷桩处理软土地基的工程实践，从工程施工前、施工过程中、事后检测阶段几方面详细阐述了保证粉喷桩工程质量的有效措施，具有一定的参考意义。     

实施绿色照明工程的效益分析与对策建议

首先介绍了绿色照明的发展过程，阐明了绿色照明是各国积极研究、讨论的课题，实施绿色照明是各国发展的方向；然后从我国的国情及绿色照明的优点分析了实施绿色照明的必要性及可行性；最后对发展绿色照明工程提出了三条对策。