A construction method for subgrade monitoring
A construction method and technology of roadbed, which are applied in measurement devices, surveying and navigation, height/level measurement, etc., can solve the problems of complicated and difficult to take over, etc.
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Embodiment 1
[0042] Embodiment 1: as image 3 As shown, a settlement monitoring device includes a bottom plate (1), an outer pipe (3), an inner pipe (4), a first clamping device (6), a control member (9-1), a first connecting member (9 -2);
[0043] The inner tube (4) can be stretched in the outer tube (10), and the inner tube (4) and the outer tube (10) can be fixed by the first clamping device (6);
[0044] The control member is arranged on the top area of the inner pipe (4), and the first connection member (9-2) is respectively connected with the control member (9-1) and the first clamping piece (6-2) of the first clamping device (6). )connect;
[0045] Wherein, the top of the inner pipe (4) is equipped with a rod top fastener (8), and the rod top fastener (8) is provided with a through hole (8-3), and the control member (9-1) is threadedly connected to the through hole. In the hole (8-3), when the control member (9-1) is rotated and pulled up, the first engaging device (6) is driv...
Embodiment 2
[0054] Embodiment 2: as Figure 7 As shown, the difference from Embodiment 1 is that the pipe wall of the outer pipe is thickened, and the first clip (6-2) of the inner pipe is inserted into the pipe wall of the outer pipe; the design idea of Embodiment 2 is: The outer pipe is equipped with a clamping jacket. When the settlement device is lowered, the clamping jacket will increase the arch effect between the outer pipe and the filling, which may make the settlement measured by the settlement device smaller; The possibility of collision with construction machinery is further reduced. It should be noted that in Examples 1 and 2, when making the clamping hole of the outer tube, the structure of the outer tube can be formed in one piece; the form of punching holes can also be used, and then the clamping jacket can be pasted outside the hole (embodiment 1), Or the mode of pasting obturator cover (embodiment 2) in the hole is molded, and this mode is more suitable for the self-ma...
Embodiment 5
[0062] Embodiment 5 adopts the dual control means of "the first connecting member + the first clamping piece" and "the second connecting member + the second clamping piece". The effect is that the settlement monitoring device is buried in the Under the soil, the monitoring personnel find the second connecting member through excavation (the second connecting member can be set 30-50cm higher than the top of the inner pipe for easy operation). "lift control member" two actions, the first clamping part and the second clamping part are both compressed in the inner tube and the outer tube, at this time, the inner tube can be driven up by pulling up the second connecting member, at this time, release Control member, at this time: Since the second connecting member is always in the pulled-up state, the inclined block (13-3) cooperates with the second clamping part (12-2), and the second clamping part (12-2) is always shrinking At this time, the inner pipe and the outer pipe can also b...
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