考虑收缩与温度应力的钢筋混凝土支撑轴力研究

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采用钢筋应力计量测钢筋混凝土支撑轴力时,收缩应力和温度应力修正是必要的。结合上海浦东某实际工程,从理论上和实测中对支撑轴力中收缩和温度应力进行研究。结果表明,收缩引起的应力相当于整个支撑轴力的 1/3,而温度变化引起的最大应力相当于支撑轴力的 1/5。 The use of steel bar stress measurement of reinforced concrete support axial force, the contraction stress and temperature stress correction is necessary. Combined with a practical project in Shanghai Pudong, the shrinkage and temperature stress of the supporting axial force are studied theoretically and experimentally. The results show that the stress caused by shrinkage is equivalent to 1/3 of the total supporting axial force, while the maximum stress caused by temperature change is equivalent to 1/5 of the supporting axial force.
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