欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    AASHTO HB-17 DIVISION II SEC 25-2002 Division II Construction - Steel and Concrete Tunnel Liners《钢和混凝土涵洞衬里》.pdf

    • 资源ID:417592       资源大小:130.56KB        全文页数:2页
    • 资源格式: PDF        下载积分:2000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要2000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    AASHTO HB-17 DIVISION II SEC 25-2002 Division II Construction - Steel and Concrete Tunnel Liners《钢和混凝土涵洞衬里》.pdf

    1、Section 25 STEEL AND CONCRETE TUNNEL LINERS 25.1 SCOPE These specifications are intended to cover the installa- tion of tunnel liner plates in tunnels constructed by con- ventional tunnel methods. For the purposes of these Spec- ifications, tunnels excavated by full face, heading and bench, or multi

    2、ple drift procedures are considered con- ventional methods. Liner plates used with any construc- tion procedure utilizing a full or partial shield, a tunneling machine, or other piece of equipment which will exert a force on the liner plates for the purpose of propelling, steering, or stabilizing th

    3、e equipment are considered spe- cial cases and are not covered by these Specifications. 25.2 DESCRIPTION 25.2.1 This work shall consist of furnishing cold-formed steel tunnel liner plates or precast concrete plates con- forming to these specifications and of the sizes and di- mensions required on th

    4、e plans, and installing such plates at the locations designated on the plans by the Engineer, and in conformity with the lines and grades established by the Engineer. The completed liner shall consist of a series of liner plates assembled with staggered longitudinal joints. Steel tunnel liner plates

    5、 shall preferably be of a type which is commercially available. Precast concrete tunnel liner plates shall be such that their size and shape suits the method and equipment being used to install them. 25.3 MATERIALS AND FABRICATION Liner plates shall be fabricated to fit the cross section of the tunn

    6、el. 25.3.1 General Steel liner plates herein described must meet the Sec- tional Properties of thickness, area, and moment of iner- tia shown on the plans. If not shown on the plans, the properties shall be as listed in Division I, Article 16.3. All steel plates shall be connected by bolts on both l

    7、on- gitudinal and circumferential seams or joints and shall be so fabricated as to permit complete erection from the inside of the tunnel. Bolt sizes and properties shall be in accordance with the manufacturers standard but not less than those specified in Division 1, Article 16.7. Grout holes 2 inc

    8、hes or larger in diameter shall be provided as shown on the plans to permit grouting as the erection of tunnel liner plates progresses. Precast concrete tunnel liner plates shall conform to the details shown on the plans and the requirements of Section 8, “Concrete Structures.” If such details are n

    9、ot provided and the plans or the specifications allow the Contractor to propose the use of concrete liner plates, the Contractor shall submit working drawings and specifica- tions to the Engineer for approval. Such drawings and specifications shall describe materials to be used, plate dimensions, re

    10、inforcement details, connecting details, and erection procedures. The fabrication of Contractor proposed types of concrete tunnel liner plates shall not begin until the working drawings have been approved. Such approval shall not relieve the Contractor of any responsibility under the contract for th

    11、e successful completion of the work. 25.3.2 Forming and Punching of Steel Liner Plates All plates shall be formed to provide circumferential flanged joints. Longitudinal joints may be flanged or of the offset lap seam type. All plates shall be punched for bolting on both longitudinal and circumferen

    12、tial seams or joints. Bolt spacing in circumferential flanges shall be in accordance with the manufacturers standard spacing and shall be a multiple of the plate length so that plates hav- ing the same curvature shall be interchangeable and will permit staggering of the longitudinal seams. Bolt spac

    13、ing at flanged longitudinal seams shall be in accordance with the manufacturers standard spacing. For lapped longi- tudinal seams, bolt size and spacing shall be in accordance with the manufacturers standard but not less than that required to meet the longitudinal seam strength require- ments of Div

    14、ision I, Article 16.3.2. 657 65 8 HIGHWAY BRIDGES 25.4 25.4 INSTALLATION 25.4.1 Steel Liner Plates All steel liner plates for the full length of a specified tunnel shall be of one type only, either the flanged or the lapped seam type of construction. Liner plates shall be assembled in accordance wit

    15、h the manufacturer?s instruction. Coated steel plates shall be handled in such a man- ner as to prevent bruising, scaling, or breaking of the coating. Any plates that are damaged during handling or placing shall be replaced by the Contractor at own expense, except that small areas with minor damage

    16、may be repaired by the Contractor as directed by the Engineer. 25.4.3 Grouting When directed by the Engineer, voids occurring be- tween the liner plate and the tunnel wall shall be force- grouted. The grout shall be forced through the grouting holes in the plates with such pressure that ali voids wi

    17、ll be completely filled. Full compensation for back packing or grouting shall be considered as included in the contract price paid for tunnel and no separate payment will be made therefore. 25.5 MEASUREMENT The length of tunnel liner to be paid for will be the length measured along the tunnel liner

    18、plate invert. 25.6 PAYMENT 25.4.2 Precast Concrete Liner Plates Installation of precast concrete tunnel liner plates shall not start prior to receipt of approval of working drawings and specifications submitted as required by Article 25.3.1. Installation shall conform to the specified or approved er

    19、ection procedures. Payment for the length of each size of tunnel as deter- mined under measurement shall be at the contract unit prices per linear foot bid for the various sizes, which pay- ment shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals to com- plete this item, including the force-grouting of voids.


    注意事项

    本文(AASHTO HB-17 DIVISION II SEC 25-2002 Division II Construction - Steel and Concrete Tunnel Liners《钢和混凝土涵洞衬里》.pdf)为本站会员(sofeeling205)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开