ICs 4 5 . 040S 1 3T B中 华 人 民 共 和 国 铁 道 行 业 标 准TB/ T 2484-2005代替 TB/ T 2484- 1994预制先张法预应力混凝土铁路桥简支 T 梁技术条件Technical specification of precast pretensioned prestressedconcrete simple-supported T-girders for railway bridges2005-08-19 发布2005-10-01 实施中 华 少L 民 共 和 国 铁 道 部发布TB / T 2 48 4-20 05目次前言 ·. I1范围 · 12规范性引用文件 ············· ··················································································⋯⋯ 13技术要求 ················· ······································，···· ···········································⋯⋯ 24试验方法 ·······，················································· · ········ ···· ··········· · ·，···· ···· ·，，··⋯⋯ 95检验规则 ·········································· ······························，·······························⋯⋯ 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 ····································· ··· ···· ···。········· ··· ·⋯⋯14TB / T 2484-2005月9舀 本标准代替TB/ T 2484- 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/T 2484- 1994进行了增删及修改。 本标准与TB/T 2484- 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、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/ T 2484-2005预制先张法预应力混凝土铁.
