INVERTED DOUBLE ARCH BELOW下面带有倒置的双拱
inverted d arch倒拱
inverted-arch反底拱
inverted-arch floor倒拱底板
inverted arch detail间断拱
inverted arch bar倒拱板
temporary inverted arch临时仰拱
grouting in inverted arch仰拱注浆
inverted arch foundation倒拱基础
The loading ratio is 40% and 60% respectively for the initial supports and secondary linings. The stress of the secondary lining is pressure stress,which is the largest on the upper arch loin and is smaller on the inverted arch.
在标准断面地铁隧道中左、右线墙脚位置初期支护与围岩之间接触压力较大,表明这两位置承受了大部分垂直压力;初期支护与二次衬砌承受的荷载比例为40%和60%;二次衬砌混凝土基本受压,拱腰及以上位置应力较大,仰拱处应力较小。
参考来源 - 黄土地区浅埋暗挖地铁隧道衬砌受力分析