中文摘要：

SJ30102十字组合角钢塔是我国第1基±800 kV直流特高压双回路真型试验塔,塔总高75.5 m,塔重176.8t.SJ30102试验塔顺利通过了大风、安装、覆冰、断线等7个工况的荷载试验,45°大风超载工况下,加载至设计荷载的134％时,十字组合角钢受压失稳破坏.试验结果表明：主材轴力计算值与试验结果相吻合,计算模型合理;考虑填板布置形式的十字组合角钢稳定承载力计算值与稳定应力实测值吻合较好,计算方法合理准确,DL/T 5154-2012关于十字组合角钢稳定计算方法过于保守;一字型填板布置形式,能够减轻塔重约3％,填板及螺栓计算方法安全可靠;十字组合角钢主材与斜材的新型连接形式,能够提高2个分肢角钢的协同工作性能,受力均匀性较好.

英文摘要：

Cruciform angle tower SJ30102 is the first full-scale test tower for ±800 kV UHV DC double-circuit in China.The total height and weight of the tower are 75.5 m and 176.8 t respectively.The test tower SJ30102 successfully passed the load test with seven conditions including wind,installation,ice coating,broken conductors and etc.Under the condition that the overload reaches 134% of the designed limit in case of 45 degrees gale,the cruciform angle tower failed with compression.The test results show that the calculated axial forces of main materials matches well with the tested results,which shows that the calcualtion model is reasonable.The calculated stability bearing capacity of cruciform angle tower matches well with the measured stable stress with consideration of filler plate arrangement form,which shows that the calculating method is accurate and the stability bearing capacity calculation method of cruciform angle tower in DI/T 5154-2012 is over-conservative.The linear filler plate arrangement form can reduce the tower weighs by about 3% and the calculation method for filler plate and bolts is safe and reliable.The new connection form between the main and the diagonal materials of cruciform angle tower can improve the cooperative working performnce of two limb angle steels with good stress evenness.