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沥青高温摊铺时钢筋混凝土箱梁的温度分布试验

, PP. 96-100

Keywords: 桥梁工程,钢筋混凝土箱梁,试验研究,温度分布,沥青摊铺

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Abstract:

?对沥青高温摊铺给钢筋混凝土箱梁造成的影响及其引起的截面温差分布规律进行了研究。在建设中的钢筋混凝土连续梁桥箱梁腹板内预先埋设了温度传感器,在沥青摊铺施工作业时对测点温度进行了实时跟踪观测,采集了大量的温度数据,分析了沥青摊铺引起的箱梁内测点温度分布状况,并对测试断面的温差分布规律进行了总结,拟合了测试桥梁的沥青摊铺温差分布曲线。结果表明:沥青高温摊铺的影响深度在50cm以内,且温度梯度值较大,对结构会造成不利影响。

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