论文部分内容阅读
本文对混凝土及石砌隧道衬砌的强度检算,建议采用不分轴心与大、小偏心受压的统一检算公式(N_P=KN=φαR_(?)bh),并根据国內外的试验成果和研究分析,定出偏心影响系数α的计算公式(α=1-1.5e_0/h)。还提出抗压和抗裂控制分界偏心的概念,说明它和拉、压破坏分界偏心在意义上的区別,算出了在一定安全系数和混凝土标号条件下的控制分界偏心数值,使衬砌强度检算方法较为合理和简化。
In this paper, the uniform calculation formula (N_P = KN = φαR_ (?) Bh), which is independent of axial and large eccentric compression, is suggested for the strength calculation of concrete and stone tunnel linings. According to the test results at home and abroad And research and analysis, determine the eccentric influence coefficient α calculation formula (α = 1-1.5e_0 / h). The concept of decentering and decentering of the compressive and crack-resistant control is also presented. The difference between the decentering and the eccentricity of the delaminating and crushing detonations is explained. The eccentric decentering values of the control decks under a certain safety factor and concrete index are calculated, The method is more reasonable and simplified.