20m整孔简支箱梁混凝土水化热规律测试与探讨

A test and exploration of the law of concrete hydratation heat for 20m monolithic simple support box girder

秦沈客运专线双线整孔简支箱梁桥综合试验是铁道部科技攻关项目,水化热规律测试与研究对提高 整孔箱梁设计和施工工艺水平有重要意义。通过对秦沈客运专线某20 m后张法预应力钢筋混凝土梁浇筑过程及 养护过程中梁体内的温度进行监测,得出了梁体端部、跨中截面的水化热温度随时间的变化规律。

Comprehensive Test of Double Track Monolithic Simple Support Box Girder for Qinhuangdao-Shenyang Passenger Dedicated Railway is a scientific and technological brainstorm project of MOR. The test and research over the law of concrete hydratation heat is of great significance to improving the level of the girder design and girder construction technology.