沉管接头钢剪切键的试验与设计

Test and Design of Steel Shear Key of Immersed Tunnel

钢剪切键是沉管接头的关键部件之一,钢剪切键箱体一般通过多排多列的角钢预埋件连接于沉管管体上。一般说来,剪切键承载能力主要受预埋件控制,但在制定现行规范时对多排多列角钢预埋件的试验研究较少。文章结合某沉管隧道工程实践,对该种预埋件承载能力的试验研究进行了论述,并对设计提出了建议。

Steel shear key is one of important parts for the joint between elements of immersed tunnel. Generally speaking the loading capacity of shear key is mainly governed by embedded part, while quite few test have been taken to the embedded part when the on -going specification is established. In this paper the loading capacity test of this embedded part based on a concrete immersed tunnel is described. Furthermore some suggestions on the design are put forward herewith.