隧道管片设计优化分析

影响管片设计的主要条件包括管片形状尺寸、管片结构设计计算方法及荷载、管片设计细节等;结合工程实例,对管片的厚度、管片环的整体偏转、管片分块与接头位置、管片拼装方式等进行了设计优化。分析认为:如简单地加大管片厚度,会导致弯矩增大,同时引起混凝土的裂缝增大;所有管片设计参数不变,只将管片环整体偏转一个角度,其受力特征会发生明显的变化;合理对管片进行分块和布置螺栓接头位置,可以改善其受力性能。

Tunneling Lining Segment Design Optimization Analysis

The main influencing factors include the segment shape and size, segment construction design, calculation method, the loading, and segment design details. In combination with project practice, the design of the thickness of the segment, the deflection of the whole segment ring, segment division, the joint, and the segment installation are optimized. Analysis proves that if you simply increase the segment thickness, the curving torque will increase and will bring about the growth of the crack of the concrete; if you only turn the segment ring by a certain angle, the features of loading will change dramatically; if you rationally divide the segments and lay out the nut joints, the loading properties will be improved.