【摘要】 在基坑开挖过程中实时对整个基坑安全状态进行评判,动态地评判基坑的安全状态,对保证基坑安全具有重要的现实意义.其中如何在基坑开挖过程中获得围护墙的实际弯矩,成为评判围护墙内力安全状态的关键.针对荷载等效的情况,提出了光顺样条拟合围护墙变形求曲率的计算方法,将计算得到的弯矩,与通过钢筋应力计推算得到的弯矩进行对比分析,验证了方法的正确性.更多还原

【Abstract】 A great deal of excavations come up with the massive construction of subway station for urban railway transportation.How to evaluate the real-time status in the process of excavation is meaningful for the safety of deep pits.And the key process is how to obtain the real bending moment of the retaining wall.The computational method,in which the curvature is obtained by smooth spline curve fitting of the deformation of the retaining wall,is presented.The accuracy of the method is validated by contrasting the results with that of method of smooth spline.更多还原