7-shaped positioning steel bar for improving tunnel secondary lining protection layer

The utility model relates to the field of reinforcing steel bars, and discloses a 7-shaped positioning reinforcing steel bar for improving a tunnel secondary lining protective layer, which comprises a first L-shaped connecting reinforcing steel bar, a second L-shaped connecting reinforcing steel bar is detachably and fixedly arranged at the left end of the first L-shaped connecting reinforcing steel bar, and a second adjusting reinforcing steel bar is detachably and fixedly arranged at the other end of the first L-shaped connecting reinforcing steel bar. And a first adjusting steel bar is detachably and fixedly mounted at the other end of the second L-shaped connecting steel bar. The fixing device is convenient to disassemble, assemble and adjust, good in fixing effect, simple and convenient to operate, low in manufacturing cost and convenient to popularize and use. 本实用新型涉及钢筋领域，公开了一种提高隧道二衬保护层的7字定位钢筋，其包括第一L形连接钢筋，所述第一L形连接钢筋左端可拆卸式固定安装有第二L形连接钢筋，所述第一L形连接钢筋另一端可拆卸式固定安装有第二调节钢筋，所述第二L形连接钢筋另一端可拆卸式固定安装有第一调节钢筋。本实用新型便于拆卸安装