轮廓形式 | 测压力系数λ | 洞周切向应力σθ (Mpa) | 差异比 | 与椭圆隧道理论拱顶及边墙应力 [17] 相比 | |||||
拱顶/((2a/b + 1)λ − 1)σv | 边墙/(−1λ + (2b/a + 1))σv | ||||||||
拱顶 | 边墙 | 拱顶 | 边墙 | a = H, b = D | a = h, b = D/2 | a = H, b = D | a = h, b = D/2 | ||
省标 | 0.8 | 20.6 | 38 | −4.4% | 7.9% | 1.46 | 0.94 | 0.72 | 1.01 |
隧规 | 21.5 | 35 | 1.46 | 0.93 | 0.68 | 0.97 | |||
省标 | 1 | 29.3 | 35.2 | −3.4% | 8.8% | 1.35 | 0.93 | 0.71 | 1.02 |
隧规 | 30.3 | 32.1 | 1.34 | 0.92 | 0.67 | 0.98 | |||
省标 | 1.2 | 37.9 | 32.4 | −4.2% | 10.2% | 1.29 | 0.93 | 0.70 | 1.04 |
隧规 | 39.5 | 29.1 | 1.30 | 0.92 | 0.65 | 0.98 |