Postbuckling and imperfection sensitivity analysis of structures in the plastic range. Part 1: Model analysis

In this paper, two simple models which complement one another in mirroring the plastic buckling properties of structures are analysed in detail to introduce a scheme for postbuckling and imperfection sensitivity analysis that is suitable for tackling real structures.

The variation of the size of the unloading area is used as the perturbation parameter and a special perturbation scheme is designed to deal with the moving boundary problems caused by plastic unloading, so that the extension of Koiter's theory of initial elastic postbuckling to the plastic range becomes possible.     

三清山博物馆安全防范工程设计

本文主要讲述了博物馆安全防范系统各子系统的设计,及其各子系统的联动运行,以建立一个比较全面的安全防范系统,达到二级防护设计,满足三清山博物馆安全防范工程需要。     

北京欢乐谷聚能飞船圆环柱动力基础设计研究

游乐设施设备基础作为一种特种结构,在我国建筑行业相关标准中还没有给出其相应的规范和条文。在《游艺机与游乐设施安全》(GB8408—2000)中也没有明确设备基础的设计方法与安全储备。结合欢乐谷工程的混凝土圆环柱设计,针对上述问题开展研究与探讨,通过优化结构形式和合理选取安全储备系数,采用近似计算与有限元分析相结合的方法进行设计,较好地解决了上述问题,并对圆环柱在弯、剪、扭作用下的结构计算进行了探讨。     

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.     

试析大众文化与当代建筑思潮

文章从引入“大众文化”这一概念入手,结合当前建筑领域中的种种现象,分析了大众文化对当代建筑思潮的主要影响,并提出应当反思的问题,从而起到正确引导大众文化的作用。     

节地住宅探讨

随着我国的人口发展，住宅建设大量增加，用地与人口的矛盾，使住宅节地问题显得非常突出。未来居住小区的节地将是一个多维的概念，应该从环境可持续发展出发加以解决，它将关系到住宅建设的根本出路。通过量化分析和实例分析，论述了部分节约用地的有效措施，并在此理论的指导下，做了若干探索性方案。     

湿度应力场的数值模拟

基于新的湿度应力场理论,建立了湿度应力场的数值模拟方法,并用通用有限元分析软件ANSYS中的温度应力场模块,有效地模拟了圆形硐室遇水作用的湿度应力场问题.数值模拟的结果与解析解结果的一致性表明,所建立的数值模拟方法是有效的.     

建筑工程中现浇板裂缝原因及防治措施

针对现浇钢筋混凝土板普遍存在的裂缝现象，从设计和施工两方面综合分析了裂缝产生的原因，提出了有效克服裂缝的预防和处理方法，以供同行参考。     

基于现场总线技术的水泥旋窑DCS控制系统在我厂的应用

根据淄矿东华水泥公司5000t/d熟料生产线的工艺特点和控制要求,对整个生产控制系统进行了细致的功能分层及子系统的划分;在此基础之上,充分发挥了现场总线技术及DCS技术两者优势,以系统集成为手段,给出一套基于PROFIBUS现场总线协议的旋窑熟料生产线的集散控制系统(DCS),实现了对熟料生产的集中管理和分散控制。通过近一段时间的实际应用表明,本系统在降低成本、减少维护以及简化管理的同时,极大提高了熟料生产的连续性、稳定性和实时性,在经济及社会效益方面均取得了良好效果。     

“新江南水乡”之设计构想——朱家角环大淀湖景观规划

介绍朱家角环大淀湖的景观规划;思索“新江南水乡”景观空间模式和特点,并具体分析现代景观空间对“原汁原味”的本土文化新的表达方式。