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JTT529-2016波纹管柔韧性塞规 塑料波纹管柔韧性塞规
mso-hansi-font-family:"Times New Roman"">一、波纹管柔韧性塞规范围:
mso-hansi-font-family:"Times New Roman"">波纹管柔韧性塞规,用于预应力混凝土桥梁用塑料波纹管柔性试验,满足《JT/T529-2016预应力混凝土桥梁用塑料波纹管》标准规范。预应力混凝土桥梁用塑料波纹管产品的分类、技术要求、试验方法、检验规则、标志、包装、运输和贮存等。适用于以高密度聚乙烯树脂(HDPE) mso-hansi-font-family:"Times New Roman"">或聚丙烯(PP) "Times New Roman"">为主要原料,经热熔挤出成型的预应力混凝土桥梁用塑料波纹管。
mso-hansi-font-family:"Times New Roman"">二、波纹管柔韧性塞规参数:
mso-hansi-font-family:"Times New Roman"">波纹管柔韧性塞规全套7 "Times New Roman"">个,包括Φ50mm "Times New Roman"">、Φ60mm、Φ75mm mso-hansi-font-family:"Times New Roman"">、Φ90mm "Times New Roman"">、Φ100mm "Times New Roman"">、Φ115mm "Times New Roman"">、Φ130mm
mso-hansi-font-family:"Times New Roman"">三、波纹管柔韧性塞规试验步骤:
1、将一根长1100mm mso-hansi-font-family:"Times New Roman"">的样件,垂直地固定在测试平台上,按图4 mso-hansi-font-family:"Times New Roman"">所示位置安装两块弧形模板,其圆弧半径r mso-hansi-font-family:"Times New Roman"">应符合表3 "Times New Roman"">规定。
2、在样件上部900mm mso-hansi-font-family:"Times New Roman"">的范围内,用手向两侧缓慢弯曲样件至弧形模板位置( mso-hansi-font-family:"Times New Roman"">见图4) "Times New Roman"">,左右往复弯曲五次。
3、按图5 mso-hansi-font-family:"Times New Roman"">所示做一塞规,当样件弯曲至最终结束位置保持弯曲状态2min mso-hansi-font-family:"Times New Roman"">后,观察塞规能否顺利地从波纹管中通过。