论文部分内容阅读
通过理论分析获得了各种强度准则下井壁内缘混凝土强度提高系数和井壁极限承载力计算公式.结果表明:和Von-Mises强度准则相比采用Hsieh-Ting-Chen,Kupfer、过镇海-王传志(G-W)准则进行计算,井壁极限承载力分别提高了4.4%,10.1%,21.5%.采用传统的Von Mi-ses强度准则进行井壁设计计算,其结果偏于安全.建议充分利用混凝土多轴强度,采用能反映混凝土实际破坏包络面的强度准则进行井壁设计计算.
Through theoretical analysis, the formulas for calculating the strength increase coefficient and the ultimate bearing capacity of the lining of the inner wall of the lining shaft under various strength criteria are obtained. The results show that compared with the Von-Mises strength criterion, Hsieh-Ting-Chen, Kupfer, (GW) criterion, the ultimate bearing capacity of the borehole wall has been increased by 4.4%, 10.1% and 21.5%, respectively. The traditional Von Mi-ses strength criterion is adopted to design the borehole wall design and the result is biased towards safety. Shaft strength, the use of concrete to reflect the actual destruction of the envelope surface strength criteria for the design calculation of the shaft wall.