tbt 2484-2005 预制先张法预应力混凝土 铁路桥简支 t梁技术条件

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1、ICs45.040S13TB中华人民共和国铁道行业标准TB/T2484-2005代替TB/T2484-1994预制先张法预应力混凝土铁路桥简支T梁技术条件Technicalspecificationofprecastpretensionedprestressedconcretesimple-supportedT-girdersforrailwaybridges2005-08-19发布2005-10-01实施中华少L民共和国铁道部发布TB/T2484-2005目次前言·.......................................................

2、..........................................................II1范围·..............................................................................................................12规范性引用文件·······························································································⋯⋯13技术要求·····

3、··················································，···············································⋯⋯24试验方法·······，···········································································，·········，，··⋯⋯95检验规则········································································，·······

4、························⋯⋯96标志与制造技术证明书·····················································································⋯⋯137保管及运输·································································································⋯⋯13附录A(资料性附录)制造技术证明书········································

5、·······。·············⋯⋯14TB/T2484-2005月9舀本标准代替TB/T2484-1994《先张法预应力混凝土铁路桥简支梁技术条件》。本标准参考了英国标准协会(BS)制定的BS5400(钢桥、混凝土桥及结合桥》标准、美国公路和运输员工协会(AASHTO)制定的1994年版(美国公路桥梁设计规范》标准，对TB/T2484-1994进行了增删及修改。本标准与TB/T2484-1994相比，主要修改如下:—增加了混凝土耐久性的要求，提高了对混凝土原材料的质量要求;—标准中规定混凝土中可内掺矿物活性掺合料(工级粉煤灰及磨细矿渣粉)的要求;—标准中明确规定了

6、骨料的选择及碱含量的限值;—提出了桥面应采用TQF一工型防水层及O40细石纤维网混凝土保护层的要求;—对混凝土蒸汽养护过程作了严格规定，明确蒸汽养护应采用跟踪养护，明确了人模温度要求;—提出了混凝土自然养护过程要求;—增加了拆模温度及强度等内容;—修改了直线配筋先张梁的张拉工艺，并考虑子折线配筋的施工工艺及横向预应力的内容;—增加了主要原材料、配件及防水材料的检验;—增加了U形螺栓、支座锚栓的渗锌处理。本标准的附录A是资料性附录。本标准由铁道部经济规划研究院提出并归口。本标准由中铁工程设计咨询集团有限公司、铁道部产品质量监督检验中心负责起草。本标准主要起草人:邓运清、孙金更、

7、徐升桥、王振华。本标准首次发布于1994年，本次为第一次修订。TB/T2484-2005预制先张法预应力混凝土铁路桥简支T梁技术条件1范围本标准规定了预制先张法预应力混凝土铁路桥简支T梁的技术要求、试验方法、检验规则、标志与制造技术证明书、保管及运输。本标准适用于标准轨距铁路的有碴桥面分片式预制先张法预应力混凝土铁路桥简支T梁(以下简称先张梁)。其他预制先张法预应力混凝土铁路桥简支梁可参照使用。规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单(不