CN2526788Y

CN2526788Y - Buried sedimentation surveying instrument

Info

Publication number: CN2526788Y
Application number: CN 02218324
Authority: CN
Inventors: 殷宗泽; 李国维; 雷国辉; 陈耀庭
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2002-01-14
Filing date: 2002-01-14
Publication date: 2002-12-18
Anticipated expiration: 2012-01-14

Abstract

The utility model relates to a subgrade settlement observation device which adopts the steps that a settlement pipe is buried under a pavement subgrade and an observation pipe is buried at one side of the pavement subgrade, wherein, the bottom parts of the observation and settlement pipes are communicated with each other, liquid is filled into the bottom parts of the pipes, the settlement of the settlement pipe in the pavement subgrade is reflected in the observation pipe through the liquid in the pipes, the subgrade settlement degree is known by measuring the fall of liquid in the observation pipe. The utility model has simple structure and is industrially produced easily. The construction is not affected when in observation, which is beneficial to the construction of the pavement subgrade with time, labor and observation cost saving. The utility model is applicable to the subgrade settlement observation of buildings and oil tanks, etc.

Description

The flush type settlement observer

Technical field

The utility model relates to a kind of settlement observer, particularly a kind of device of observing settlement of foundation.

Background technology

Before the utility model is made, on soft soil foundation, build highway, highway, railway and other buildingss, all can relate to the sedimentation of ground.Because the complicacy of soil property be difficult to make accurate settlement calculation when design, and the settlement issues of ground relates to the safety of building, shouldn't be careless.For this reason, in work progress, just must carry out on-the-spot settlement observation, be convenient in time verify computational data, make rational correction.Be example at present with the highway, the method for observation settlement of foundation is to imbed a settlement plate every 50-100 rice on ground, on connect sedimentation mark, in work progress, observe with spirit-leveling instrument, measure its height, after construction is finished, still will observe, also promptly do long-term settlement observation and use.The defective of this method is to disturb construction, is example to build highway, and roadbed is filled out on from level to level, one to connect high sedimentation mark successively, and on-the-spot connection, and the sedimentation mark is located at the central authorities on road, near the soil layer it just can't compacting, causes roadbed inhomogeneous; In addition, whenever once observe, shouldering spirit-leveling instrument on highway, when the expense manpower is taken a lot of work; And this method adaptive surface is narrow, is example to build oil tank foundation, after particularly oil tank comes into operation, can't observe at all, brings hidden danger.

Summary of the invention

The purpose of this utility model just is to overcome above-mentioned defective, designs a kind of brand-new observation device.

The technical solution of the utility model: its major technique is characterised in that the sedimentation pipe bottom is communicated with the sighting tube bottom by pipe, puts into liquid in sedimentation pipe, the sighting tube.

Advantage of the present utility model and effect are that the sedimentation of roadbed after use is finished in architectural process neutralization observe by the sighting tube of roadbed one side, do not influence construction, saving of work and time during observation, save cost, structure is simpler, and is easy to operate, the degree of accuracy height, can reach the millimeter level, be easy to suitability for industrialized production, be suitable for various buildingss such as highway, oil tank, high building.

Description of drawings

Fig. 1-the utility model structure applications principle schematic.

Embodiment

As shown in Figure 1: sedimentation pipe 1 is put into sedimentation container 2, imbeds roadbed then 3 times in (among the figure shown in the solid line); Sighting tube 4 is imbedded a side of roadbed 3, and the bottom of sedimentation pipe 1 is communicated with the bottom of sighting tube 4 with flexible pipe 5; Two not connected leads 6 are set at the top of sedimentation pipe 1, lead 6 is caused sighting tube 4 places of roadbed 3 one sides, be connected with ammeter 7; Measuring instrument 8 is set in sighting tube 4.

During use: put into water in sighting tube 4, because sighting tube 4 bottoms are communicated with sedimentation pipe 1 bottom, according to siphon principle, the interior water surface of the interior water surface of sighting tube 4 and sedimentation pipe 1 is identical, promptly highly equal; Because in use, need long-time observation, though the water in the sedimentation pipe 1 is because buried in 3 times difficult evaporations of roadbed, but sighting tube 4 will be opened cap when observation, water wherein has a small amount of evaporation, can influence accuracy of observation, so bury two not connected leads 6 underground at sedimentation pipe 1 top, it is connected 7 with ammeter, can check that whether the water surface is at its top in the sedimentation pipe 1, if not at the top, then in sighting tube 4, add low amounts of water, until lead 6 energisings, ammeter 7 deflections, water in the expression sedimentation pipe 1 overflows to the top, and the water that overflows in the sedimentation pipe 1 then drops in the sedimentation container 2; After roadbed 3 has had sedimentation, sedimentation pipe 1 sinks, new position (as shown in phantom in FIG.) below having arrived, this segment distance that descends will cause the same distance that also descends of the water levels in the sighting tube 4, measure decline of water table distance in the sighting tube 4 with measuring measuring instrument 8 again, measuring instrument 8 be an end of two one metal wires (or bar) from sighting tube 4 tops downwards until the contact water surface, and that the other end of two one metal wires is connected with ammeter 7 is (shared with lead 5, also can connect in addition) and deflect, the length that tinsel stretches out downwards is exactly the distance that sedimentation pipe 1 sinks, and how much has just known roadbed 3 sedimentations.

Finish the sedimentation that to observe roadbed 3 after being delivered for use in work progress neutralization.Buildingss such as building, oil tank all are suitable for.

Claims

1. the flush type settlement observer is characterized in that the sedimentation pipe bottom is communicated with the sighting tube bottom by pipe, puts into liquid in sedimentation pipe, the sighting tube.

2. flush type settlement observer according to claim 1 is characterized in that sedimentation pipe puts into the sedimentation container.

3. flush type settlement observer according to claim 1 and 2 is characterized in that at the sedimentation pipe top two not connected conductor wire end being set, and the other end of two leads is arranged on the sighting tube place, joins with ammeter.

4. flush type settlement observer according to claim 1 is characterized in that being provided with the measuring instrument that liquid changes up and down in sighting tube.

5. flush type settlement observer according to claim 3 is characterized in that being provided with the measuring instrument that liquid changes up and down in sighting tube.

6. flush type settlement observer according to claim 1 is characterized in that liquid is water.