【摘 要】
：
以某大跨径预应力混凝土箱梁桥为工程背景,将参数敏感性分析方法应用于预应力筋张拉双控技术中,通过分析预应力筋张拉伸长值误差对其控制应力偏差的敏感程度,并运用幂函数对
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以某大跨径预应力混凝土箱梁桥为工程背景,将参数敏感性分析方法应用于预应力筋张拉双控技术中,通过分析预应力筋张拉伸长值误差对其控制应力偏差的敏感程度,并运用幂函数对其曲线关系进行拟合,以曲率最大法确定临界点,提出更加科学合理的预应力筋张拉双控技术控制准则。
Taking a large span prestressed concrete box girder bridge as the engineering background, the parameter sensitivity analysis method is applied to the prestressing tendon tensioning double control technology. By analyzing the error of the prestressing tension tensile value to the control stress deviation Sensitivity, and use the power function to fit the curve of the curve to determine the maximum curvature of the critical point, put forward more scientific and reasonable control of prestressed tendons double control technology.
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