钢构安装质量保证体系

P56

成套钢支撑安装指引

一、什么是成套钢支撑？成套钢支撑就是剪力墙柱和顶板主次楞全部使用定型钢方通，锁具使用定型锁具。主楞主楞次楞次楞Content 二总结目录一施工准备成套钢支撑安装指引三标准层安装Part

2019-07-09 1806 0

P144

安装工程质量通病防治手册

安装工程质量通病防治手册 2013 年 12 月前言近年来公司发展迅猛，施工产值逐年递增。但高速的发展过程中，施工质量通病的防治工作有所滞后，与公司的定位——国内同行业标杆，国际一流的专业化公司——不相称。

2019-05-24 2148 0

P100

PRIMARY AUDIENCE: Research engineersSECONDARY AUDIENCE: Plant, corporate, and design engineersKEY RESEARCH QUESTIONThere is limited information in the open literature regarding the fabrication and performance of dissimilar metalwelds (DMWs) between 9%Cr creep-strength-enhanced ferritic (CSEF) steel and austenitic stainless steelcomponents. Furthermore, the results from the available studies have not established the factors thatcontribute to the fusion line cracking reported for some in-service failures. This report provides examples ofindustry failures in several end-use components and links them to the key contributions from design,operation, fabrication, and metallurgy of DMWs.RESEARCH OVERVIEWThis report provides important guidelines regarding the design, fabrication, and construction of DMWsbetween 9%Cr CSEF steel and austenitic stainless steel components that are designed to transport or collectsteam. This report does not address details specific to the following: overlay welding, such as for corrosionresistance; repair welding, such as might be addressed by the American Society of Mechanical Engineers(ASME) Post Construction Code or the National Board Inspection Code; prescriptive guidance, including howto use particular welding processes; or qualification guidelines addressed by the ASME Boiler and PressureVessel Code, Section IX. Numerous practical considerations exist regarding the specification and fabricationof DMWs, and it is not possible to address all potential concerns regarding this type of connection in thisreport. Instead, this report provides basic guidelines that are important to the goal of promoting “better”practice and providing equipment owners and operators with information to consider regarding additionalrequirements that are relevant to purchasing specifications. Specific factors that affect performance in thecontext of design, fabrication, operation, and metallurgical risk are addressed.KEY FINDINGSThe summary of recommendations in this report provides a concise set of guidelines regarding key aspectsof DMW construction, including restrictions on the end-use application, weld joint geometry, welding process,post-weld heat treatment, transition pieces, operation, and special considerations.WHY THIS MATTERSEvery steam-raising power boiler in a power generating plant is made with a range of different steels. Thepressure boundary joints necessitate welding of the steels. Despite the number of joints that exist, there hasnot been an extensive evaluation of fabrication factors that affect performance in cross-weld creep for DMWsconstructed between 9%Cr CSEF steel and austenitic stainless steel components. This report provides insightinto the factors that contribute to performance with respect to when a weldment fails and how it fails (that is,damage tolerance).9842144EX

2019-02-24 3710 0

P18

北客站~尚稷路区间盾构段

地表及建（构）筑物情况场地现状多为填土和生活垃圾，地面高程 371.196～378.987m。本车站的南侧紧邻国铁北客站站，西侧上跨西安地铁二号线出入场线区，闸北侧及东侧均为空地。盾构区间在 DK1+200～+225

2019-04-18 1165 0

P131

钢结构工程施工质量验收规范(含条文说明）GB5020

3 基本规定3.0.1 钢结构工程施工单位应具备相应的钢结构工程施工资质施工现场质量管理应有相应的施工技术标准质量管理体系质量控制及检验制度施工现场应有经项目技术负责人审批的施工组织设计施工方案等技术文件3.0.2 钢结构工程施工质量的验收必须采用经计量检定校准合格的计量器具3.0.3 钢结构工程应按下列规定进行施工质量控制:1 采用的原材料及成品应进行进场验收凡涉及安全功能的原材料及成品应按本规范规定进行复验并应经监理工程师(建设单位技术负责人)见证取样送样2 各工序应按施工技术标准进行质量控制每道工序完成后应进行检查3 相关各专业工种之间应进行交接检验并经监理工程师(建设单位技术负责人)检查认可

2018-11-12 2637 0