烟大铁路轮渡栈桥钢梁制造技术

烟大铁路轮渡栈桥是世界第一座双孔联动的下承式板梁结构，该栈桥不是简单的桥的概念，而是一部大型的机器。文章介绍了烟大铁路轮渡栈桥钢梁制造过程中的关键技术。     

Life cycle performance goals for civil infrastructure: intergenerational risk-informed decisions

Civil infrastructure facilities play a central role in the economic, social and political health of modern society. Such facilities are susceptible to ageing, which is stochastic in nature and makes their reliabilities time dependent. Life-cycle engineering analysis and risk-informed decision tools have advanced in recent years for managing public investments in performance assurance and risk mitigation of civil infrastructure. However, certain civil infrastructure projects may be designed for service periods that are substantially longer than what has been typically expected of buildings, bridges and similar facilities, extending the potential consequences of life-cycle engineering decisions far beyond the limits for which there is practical experience. Current assessment procedures will require modification to evaluate performance of civil infrastructure facilities over extended time frames and to support sustainable and equitable decisions affecting long-term public safety. This paper considers a number of key issues that must be addressed in life-cycle reliability assessment of civil infrastructure facilities that must remain functional for service periods of several generations, and introduces perspectives on risk that are germane to ensure sustainability and intergenerational equity in risk-informed decision-making.     

浅谈火力发电厂循环水管沟水压试验方法

本文阐述了火力发电厂循环水压力管水压试验的必要性 ,并对接头水压试验和全长 (分段 )水压试验方法作了较为详细的介绍 ,以供参考     

Partnering模式在工程建设全过程中的应用探究

Partnering模式是国际建设的先进管理模式之一,其理念与传统项目管理模式不同;它不是从对立的角度去观察和解决问题,而是强调理解、合作和信任,已成为当前国际建筑管理的重要研究课题和实践之一.文章在介绍Partnering模式的概念、特征及应用现状的基础上,通过工作流程(组织过程)设计,将全生命周期思想引入到Partnering模式中,把Partnering模式的应用贯穿于项目建设的全过程.     

建筑结构的空间整体分析

为了准确地对建筑结构进行动力和静力分析，提出了考虑楼板变形的结构空间整体计算模型，并根据此模型编制了相应的结构分析程序，最后，在考虑剪力墙平面内和平面外变形的基础上，对其单元分析模型进行了探讨，推导了剪力墙单元刚度矩阵．     

建设项目全寿命期目标体系研究

建立建设项目全寿命期目标体系 ,扩大了建设项目目标的内涵、时间跨度和代表性 ,使它更具有包容性和完备性 ;构造了建设项目目标层次和思维方式 ,将与环境协调和可持续发展的目标提高到哲学思维层次。这对于建立建设项目管理的基本理论体系有重要的作用。     

全程化的城市设计服务模式思考——北川新县城城市设计实践

基于对国内城市设计实践的现状实效认知,以"过程融合"为切入点,提出转变城市设计服务模式的设想,并结合北川新县城城市设计工作实践,从技术服务与组织建构的双重视角以及宏观、中观、微观的不同操作层面加以剖析。     

Economic Performance of Residential Fire Sprinkler Systems

A benefit–cost analysis is performed to measure the expected present value net benefits (PVNB) resulting from the installation of a residential fire sprinkler system in a newly constructed, single-family house. The benefits and costs associated with installation and use of a fire sprinkler system are compared across three prototypical single-family house types: colonial, townhouse, and ranch. Each of the house types varies by design, size, and fire sprinkler affordability. Six fire sprinkler system designs are evaluated: a multipurpose network system, three stand-alone systems, and two stand-alone systems equipped with a backflow preventer. The sprinkler designs vary by installation cost (materials and labor cost) and required annual maintenance, but all were designed to meet the NFPA 13D standard. The estimated benefits of fire sprinklers include reductions in the following: the risk of civilian fatalities and injuries, homeowner insurance premiums, uninsured direct property losses, and uninsured indirect costs. Results show that residential sprinkler systems not requiring expensive annual upkeep or maintenance are economical. The expected PVNB in 2005 dollars is estimated as $2,967 for the colonial-style house, $3,099 for the townhouse, and $4,166 for the ranch-style house, given installation of the lowest life-cycle cost sprinkler system in each of the house types. A sensitivity analysis that measures the variability of the results to changes in the modeling assumptions confirms the robustness of the baseline analysis.

浅析BT项目的投资控制

分析了进行BT项目投资控制的必要性,界定了BT项目投资成本的范围和阶段。根据BT项目的特点,把BT项目运行的过程分成项目决策阶段、项目准备阶段、项目招标阶段、项目实施阶段(设计阶段、施工阶段)、项目转让阶段,从全过程的角度探讨了BT项目的投资控制。     

工程质量的概念剖析与目标体系研究

深入阐述了工程质量的概念。在对比分析主观质量和客观质量的基础上,将工程质量的目标体系用"工程项目全寿命期双向主观质量"的概念来表征,从而扩大了工程质量概念的内涵、内容和时间跨度,使其更具完备性与包容性。并从业主、承包商和工程本身三个方面对工程质量的规律和特点进行了分析说明。