论文部分内容阅读
GB1499—79中规定的钢筋外型,是参照苏联TOCT5781(57)标准制定的。这种外型的钢筋在施工中多次发生脆断事故;当化学成份偏标准中、下限时,因强度低于标准规定值而导致报废的情况时有发生。国内近年来开始生产的纵横肋不相交的新型钢筋,不仅其粘结强度、锚固性能均满足TJ10—74规范的要求,而且具有外型简单、机械性能优良、生产成本低、使用效果好等优点。
Reinforced by GB1499-79 in appearance, with reference to the Soviet Union TOCT5781 (57) standards. This appearance of steel in the construction of brittle fracture occurred several times; when the chemical composition of the partial standard, the lower limit, due to strength below the standard value of the resulting scrapped situations have occurred. The new steel bars with longitudinal ribs and cross ribs which are produced in China in recent years not only meet the requirements of TJ10-74 standard but also have the advantages of simple appearance, excellent mechanical properties, low production cost and good use effect .