关于钢纤维砼在局部压力作用下的强度和延性的研究

介绍钢纤维砼在局部压力作用下的强度和延性的变化规律，再与砼中配有钢筋网片的情况对比，得出了提高砼局部抗压能力的有效方法。     

建筑总平面设计

总平面设计是个反复的过程,也是一个不断完善的过程,它是整个建筑设计过程的起点也是终点。本文主要针对中小型建设规模的住宅小区、综合商务办公等建筑类型,简要概述了总平面设计的内容和要点。     

平板波动量检具的研制

平板波动量是平板局部工作面平面度的判定依据之一。提出依据最小包容原则计算平板波动量并研制一种新型的测量工具,并进行不确定度和可行性分析。     

Model-driven visualizations of constraint-based local search

Visualization is often invaluable to understand the behavior of optimization algorithms, identify their bottlenecks or pathological behaviors, and suggest remedial techniques. Yet developing visualizations is often a tedious activity requiring significant time and expertise. This paper presents a framework for the visualization of constraint-based local search (CBLS) algorithms. Given a high-level model and a declarative visualization specification, the CBLS visualizer systematically produces animations to visualize constraints and objectives, violations, and conflicts, as well as the temporal behavior of these measures. The visualization specification is declarative and typically composed of a triple (what,where,how) indicating what to display, where, and with which graphical objects. The visualizer architecture is compositional and extensible. It provides building blocks which can be assembled freely by the user and focuses almost exclusively on static aspects, the dynamic aspects being automated by the use of invariants. The paper highlights various functionalities of the visualizer and describes a blueprint for its implementation.     

华威商住大厦厚板转换结构设计

介绍四川华威商住大厦工程概况、结构选型、计算及主要技术措施。着重介绍合理调整转换结构竖向刚度满足底部大空间使用要求以及上部短肢剪力墙设计措施。     

A local demand forecast by NN method for distributed autonomous voltage and reactive power control system

The paper describes required technological innovation for voltage control of power systems under deregulation of power supply industries and presents a new concept of an autonomous control system for the voltage and reactive power of power systems. Installation of distributed generation connected to distribution networks will significantly increase the short circuit capacity of distribution lines. Therefore, GIS underground substations in the center of a large city are required to enable replacement of circuit breakers with ones of greater capability and to reform GIS bus configurations. Furthermore, a more detailed forecast of local demand and operation data of distributed generators are required for the stable control of voltage and reactive power. This paper presents methods of on‐line autonomous forecasting for short circuit capacity and demand of local transmission and distribution lines, which are indispensable for voltage and reactive control under deregulation of electric power supply industries. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 159(4): 27–37, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20450     

Expression for massively parallel algorithms — description and illustrative example

In this paper, we present a way of expressing massively parallel algorithms associated with a programming environment for networks of processors with local memory; the aim is to provide a programming method that is independent of the network topology, and that leads to an efficient implementation for communications.

Then, we illustrate these concepts using as an example a scientific algorithm: Choleski's method for a parallel factorization of sparse matrices into blocks.

This work gives rise to software for a T.Node multiprocessor computer.     

某海上风电场基础结构防冲刷物理模型试验

采用2种防冲刷方法对单桩基础进行防护物理模型试验，研究不同防冲刷方法在某海上风电场海况下的防冲刷效果，并进行不同防冲刷方法的成本分析。结果表明，混凝土联锁排防护比抛石防护具有更佳的防护效果。混凝土联锁排防护可通过柔性变形适应土体变形，达到有效防止沙土流失的效果。经综合考虑，抛石防护搭配混凝土联锁排防护为最适合该风电场水文环境的防护方法。     

纯弯状态下蜂窝梁腹板稳定问题研究

针对国内尚无有关蜂窝构件的规范或标准可以执行的实际情况，进行了蜂窝梁腹板在纯弯状态下的稳定问题研究。基于薄板的弹性稳定理论，建立了孔口处腹板和孔间处腹板的计算模型；应用能量法，得出了板的稳定方程，确定了板的高厚比限值和最小弯曲刚度，可供有关设计参考．