考虑椭圆度缺陷的盾构管片结构极限承载性能研究

王震,丁智,张霄,周奇辉,张成全

Ultimate bearing capacity of shield segment structures considering ovality imperfection

Zhen WANG,Zhi DING,Xiao ZHANG,Qi-hui ZHOU,Cheng-quan ZHANG

表 4 整体式、衬砌式管片的外部围压极限荷载系数和误差百分比的比较

Tab.4 Comparison of external confining pressure ultimate load factor and error percentage for intergral and lining segments

椭圆度缺陷w (‰) α0 φ1 φ2 φ2/φ1 0 3.99 3.46 0.84~0.86 5 3.94 3.41 10 3.90 3.36 20 3.81 3.27 30 3.73 3.19