2006:积极推进结构调整着力扩大消费需求

2005年,我国经济呈现高位平稳增长的特征,各项经济指标总体上继续向好.与此同时,经济运行中也出现了一些新情况、新问题,需要引起足够的重视.2006年,针对部分生产资料行业产能过剩等突出问题,应积极推进产业结构调整,促进经济增长方式转变.同时,应将扩大消费需求作为宏观政策的主要着力点.     

浅谈南水北调工程中招标代理机构的自身建设

在市场经济条件下,随着水利工程建设市场的不断规范和完善,招标代理机构如何在市场竞争中开展招标代理业务,其自身建设就显得尤为重要。现结合南水北调工程实际,提出了招标代理机构应从法律意识、诚实信用、专业特长、激励机制和沟通协调等5个方面加强自身建设,以便能在南水北调工程建设中更好地发挥作用。     

21世纪住宅电气设计的构想

通过国内外室内电气设计标准的比较,提出了我国21世纪住宅配电设计的思路。     

输气管道投产置换过程气体混合规律研究

目前国内输气管道置换工艺主要依据人工经验进行，存在较大的盲目性，导致天然气管道投产成本较高，安全风险较大，有必要对输气管线安全投产工艺进行科学、系统的研究，实现输气管道的安全、高效、经济投产模式。文章讨论了现有置换工艺中不同的置换方式，认为不加隔离器的置换方法具有置换效率高、费用低以及安全可靠等优点，是一种有前途的新工艺、新方法。同时，为确保置换过程的安全性，针对置换过程中注氮量确定的盲目性问题，采用模拟试验方法，研究了天然气与氮气、氮气与空气混合段在不同流速和背压下长度的变化规律，从而为确定合理的用氮量提供了理论依据。     

碳纤维增强混凝土构件正截面计算的双界限系数法

以材料的力学性能分析为基础，利用双界限系数将碳纤维增强混凝土受弯构件划分成三种正截面的破坏形态，对每一种破坏形态，建立了单、双筋矩形截面极限承载力的计算式，使碳纤维增强混凝土构件正截面计算与现行的规范相一致。     

TRVs and fault clearing stresses in extra-high-voltage radial networks

To cope with the high rate of increase of power demand in the main industrialized districts in Japan, 550-kV transmission systems covering the districts have been reinforced, with most of the main power plants connected directly to these systems. Through 550-/300-kV substations, the majority of power to the districts is supplied by 300-kV systems. To limit the excess short-circuit capacity in the 300-kV systems, they tend to be reconstructed as so-called radial networks. In radial networks with high short-circuit capacity and relatively small number of transmission lines connected to the substation busbars, the rate of rise of TRV can be far higher than standard value. This paper analyzes the transient recovery voltages (TRV) in such extra-high-voltage radial networks in Japan, together with the relevant stresses to circuit-breakers during fault clearings. Future system conditions have also been introduced. As the typical rate of rise of the TRV values, more than twice that of today's standard ones are probable.     

NPCDP／PET复合仿毛纤维纺丝工艺研究

应用复合纺丝方法并通过加弹、空气变形等措施使ＮＰＣＤＰ／ＰＥＴ异染异收缩纤维获得优良的毛性感。简要介绍了复合纺丝的工艺路线，讨论了纺丝温度、压力、干燥工艺、拉伸条件对可纺性的影响，并明确了变形工艺对复合纤维的影响作用。制得的ＮＰＣＤＰ／ＰＥＴ复合纤维物理力学性能符合后加工要求，织物的缓弹回复角达３０５度。     

渤中28－1（BZ28－1）油田N6H水平井动态分析

本文以渤中２８－１（ＢＺ２８－１）油田Ｎ６Ｈ水平井为例，从多方面对该井的动态和产能变化进行了系统分析，所用的方法对水平井动态分析有一定的指导意义。     

Bridge design with reserve and residual reliability constraints

System reliability is evolving as an important design method for selecting components and topology. It should be used to investigate the original intact structure behavior as well as providing sufficient reserve capacity under likely accident and damage scenarios. Highway bridges are an area of special concern since effort to optimize the cost of construction may not provide adequate redundant capacity. The paper describes an example in which a typical girder bridge structure is optimized (both size and girder spacing) to achieve target system performance. System reliability constraints are imposed on the behavior of the intact structure under highway loads. Also, residual system reliability constraints are imposed to control safety under specified accident scenarios corresponding to damage and “lost” members due to corrosion, fatigue, fire or accidental collisions. An optimal design framework for controlling safety under all these life cycle situations is thus provided.     

固定式塔吊基础设计与施工技术

潘家园小区工程建筑面积3．6万m^2，地下3层，地上28层。基槽标高-10.750m，地面至屋面女儿墙上口高度为83m，地上标准层层高2．8m。采用土钉墙护坡，坡度1：0．1，该工程的地质条件适宜桩基础的施工。