TB∕T 2484-2005 预制先张法预应力混凝土铁路桥简支T梁技术条件.pdfVIP

ICs45.040 S 13 TB 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 Technicalspecificationofprecastpretensionedprestressed concretesimple-supportedT-girdersforrailwaybridges 2005-08-19发布 2005-10-01实施 中 华 少L民 共 和 国铁 道 部 发布 TB/T 2484- 2005 目 次 前 言 .·II 1 范 围 ·1 2 规范性引用文件 ······························································································…·…1 3 技术要求 ·······················································，···············································…… 2 4 试验方法 ·······，···········································································，·········，，··…… 9 5 检验规则 ········································································，·······························…… 9 6 标志与制造技术证明书····················································································…·… 13 7 保管及运输 ·································································································…… 13 附录A(资料性附录) 制造技术证明书 ···············································。·············…… 14 TB/T 2484-2005 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;