呼玛河冰灾害试验研究
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摘要
为了了解高寒地区水工建筑物受春季流冰的威胁程度,选取呼玛河冰为研究对象。通过一系列单轴无侧限抗压强度试验,就温度与加载速率对河冰抗压强度、应力-应变关系、弹性模量的影响进行了研究。利用统计分析与曲线拟合,得出了抗压强度与温度间的相关关系。在呼玛大桥现场进行了流冰撞击桥墩的动态测量,取得了相应的实测数据,为研究冰-结构相互作用提供了有用的资料。
In order to know the intimidation of the flowing ice to hydraulic construction in the highly cold areas in spring,the authors chose the ice in Huma River as the investigated object.Through a series of uniaxial and unconfined compression test of Huma River ice,the influence of temperature and loading rate on compressive strength,strain-stress relationship and elastic modulus was carried out.Using stalistic analysis and curve fitting,the correlation between compression strength and temperature was established.The dynamic measurement for flowing ice to impact the pier was carried out in site of Huma Bridge.The measured data are obtained and give a useful reference to research on ice-structure interaction.
In order to know the intimidation of the flowing ice to hydraulic construction in the highly cold areas in spring,the authors chose the ice in Huma River as the investigated object.Through a series of uniaxial and unconfined compression test of Huma River ice,the influence of temperature and loading rate on compressive strength,strain-stress relationship and elastic modulus was carried out.Using stalistic analysis and curve fitting,the correlation between compression strength and temperature was established.The dynamic measurement for flowing ice to impact the pier was carried out in site of Huma Bridge.The measured data are obtained and give a useful reference to research on ice-structure interaction.
引文
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[2]隋吉学,孟光琳,李志军,等.渤海海冰弯曲强度影响因素分析[J].海洋环境科学,1996,15(1):73-76.
[3]彭万巍,李志军,吴紫汪,等.“高温”海冰单轴抗压强度特性[C]//第五届全国冰川冻土学大会论文集(下册),兰州:甘肃文化出版社,1996:1196-1120.
[4]冯玮,时忠民,刘立名,等.冰排与斜面结构作用时的破断长度分析[J].力学与实践,2005,27(2):14-17.
[5]蔡之瑞,孙柏涛,郭世荣,等.冰荷载的试验研究与计算方法[J].地震工程与工程振动,1997,17(4):50-57.
[2]隋吉学,孟光琳,李志军,等.渤海海冰弯曲强度影响因素分析[J].海洋环境科学,1996,15(1):73-76.
[3]彭万巍,李志军,吴紫汪,等.“高温”海冰单轴抗压强度特性[C]//第五届全国冰川冻土学大会论文集(下册),兰州:甘肃文化出版社,1996:1196-1120.
[4]冯玮,时忠民,刘立名,等.冰排与斜面结构作用时的破断长度分析[J].力学与实践,2005,27(2):14-17.
[5]蔡之瑞,孙柏涛,郭世荣,等.冰荷载的试验研究与计算方法[J].地震工程与工程振动,1997,17(4):50-57.
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