湘钢“超级水电用钢”助力巴基斯坦电站建设 - 钢厂新闻 :: 新闻中心_中钢网

作者:集团概况    发布时间:2020-05-04 20:10    浏览::

8月中旬,笔者从华菱湘钢获悉,华菱湘钢为巴基斯坦SukiKinari(苏基克纳里)水电站项目供应的第一批600兆帕级及800兆帕级钢板共计1800吨,已于8月5日顺利验收装船。该水电站是中巴经济走廊首批优先项目清单中的重点项目。该项目压力钢管用钢板共需16000余吨,全部由华菱湘钢独家供应,其中800兆帕级钢板3000余吨、600兆帕级钢板6000余吨。这是已知全球建成和在建水电站用钢板的最高要求:最高强度等级——抗拉强度800兆帕、最大厚度——144毫米超厚极限规格、最大厚径比——岔管厚径比达到近3.5%等。具体而言,800兆帕级钢板厚度为24毫米必威登录平台 ,~144毫米,月牙肋板最厚144毫米,是目前国内供应的800兆帕级水电钢板中的最厚尺寸;800兆帕级72毫米厚度的岔管厚径比达到3.49%,600兆帕级68毫米厚度的直管厚径比达到3.3%。华菱湘钢承接该项目后,针对项目技术要求高、难度大、交货期紧的特点,IPD(集成产品开发)团队与业主技术专家进行多次交流沟通,充分发挥技术优势与装备优势,制订合理的技术方案和生产组织方案。从项目清单确定到第一批钢板发货,短短不到3个月的时间,2块144毫米的800兆帕级月牙肋板已经合格待发,批量生产的800兆帕级压力钢管用钢板顺利出厂,华菱湘钢创造了国内该级别钢板的最快交货纪录。

[摘要] 埋藏式岔管国内外基本按明管设计,围岩分担内水压力仅作为一种安全储备。西龙池抽水蓄能电站岔管PD值远超过国内已建工程规模,在国内首次采用考虑围岩分担内水压力设计。本文重点介绍西龙池岔管考虑围岩分担内水压力设计成果。首先通过三维有限元结构分析,较系统研究岔管围岩分担内水压力的规律,并初步提出埋藏式岔管的设计原则;通过1:2.5比尺的现场结构模型试验验最终确定埋藏式岔管设计参数和验证有限元计算成果。

[关键词]抽水蓄能电站 西龙池 内加强月牙肋岔管 围岩分担内水压力设计

Design of Assuming Surrounding Rock to Share Internal Water Pressure for Escher-Wyss Wyepiece at Xilongchi Pumped Storage Power Station

WANG Zhiguo(Beijing Hydropower Investigation Design & Research Institute,CHECC,Beijing 100024)

[Abstract] Buried bifurcated pipes have been designed normally as exposed ones,in which,sharing internal water pressure with surrounding rock is taken as a safe reserve only.With a PD Value of far more than those in the existing domestic projects,this project adopts firstly the design assuming surrounding rock to share internal water pressure.This paper describes mainly the design results.In this paper,Law of sharing internal water pressure with surrounding rock is investigated systematically by means of 3D finite element structural analysis to give preliminary design principles for buried bifurcated pipes,and through the testing on a 1:2.5 site structure model,the design parameters are determined finally and the calculated results of EFM are demonstrated.