石山口水库闸墩施工期温度分析

Thermal Analysis for Shishankou Reservoir Pier during the Construction Period

分析了混凝土闸墩温度裂缝产生的原因、温度变化和温度应力发展过程。对石山口水库闸墩中增设膨胀混凝土带后的施工期温度进行了实时监测,为了解混凝土水化热温度变化规律提供了实测依据,并与普通混凝土闸墩进行对比。结果表明,在闸墩中增设混凝土膨胀带效果良好,为混凝土闸墩施工期防裂提供了一种新的方法。

The temperature change,thermal stress and the cracks caused by temperature change of Shishankou Reservoir concrete pier were studied herein.For controlling the cracks of concrete pier,an additional expansive concrete belt was laid between piers.The temperature change was monitored on real-time monitoring during construction period and compared with ordinary concrete pier.The monitor provided a basis for understanding the hydration heat of concrete,and show that the expansive concrete belt has a good effect on the crack control.