CN218622163U - Measuring device for simultaneously detecting foundation settlement and roadbed compression deformation - Google Patents
Measuring device for simultaneously detecting foundation settlement and roadbed compression deformation Download PDFInfo
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- CN218622163U CN218622163U CN202223274548.4U CN202223274548U CN218622163U CN 218622163 U CN218622163 U CN 218622163U CN 202223274548 U CN202223274548 U CN 202223274548U CN 218622163 U CN218622163 U CN 218622163U
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Abstract
The utility model discloses a measuring device for simultaneously detecting foundation settlement and roadbed compressive deformation, which comprises a base point level meter, an observation point level meter, a data acquisition box and a liquid storage tank, which are used for measuring foundation layer settlement, and a single-point displacement meter and an automatic acquisition instrument, which are used for measuring roadbed layer compressive deformation; is characterized in that: the base point level meter is arranged at a non-settling position of the foundation layer, and the plurality of level meters are uniformly arranged on the foundation layer at intervals; the liquid storage tank is connected with the base point level meter and the observation point level meter through the air pipe and the liquid pipe, and the data acquisition box is connected with the base point level meter and the observation point level meter through the communication power supply cable. The utility model discloses a measuring device has solved current settlement of ground and road bed and has detected the drawback that can not distinguish ground settlement volume and road bed compression deformation volume that causes simultaneously, more is favorable to carrying out the analysis respectively to the factor that causes ground settlement and road bed compression deformation.
Description
Technical Field
The utility model relates to a measuring device, more specifically the theory that says so especially relates to a measuring device that foundation subsides and road bed compressive deformation detects simultaneously.
Background
At present, when the foundation or the subgrade settlement of a road is detected, a measuring sensor is generally adopted to integrally reflect the adult settlement of the foundation and the subgrade. However, the subgrade settlement is the deformation of the road caused by stress during the use process, the subgrade settlement is mainly the compression deformation of the road caused by stress during the use process, and both the subgrade settlement and the subgrade compression deformation can cause the unevenness of the road surface, such as the local or overall collapse of the road, the bump at the bridge head, the crack of the road surface and the like, thereby further influencing the comfort and the safety of the vehicle.
However, the whole settlement of the foundation and the roadbed is reflected by adopting a measuring means at present, the measuring method cannot distinguish the foundation settlement from the roadbed compression deformation, so that factors influencing the foundation settlement and factors influencing the roadbed compression deformation are not easy to be distinguished, the reasons influencing the foundation settlement and the roadbed compression deformation are not easy to find out, and remedial measures are taken in a targeted manner to improve the performance of the road foundation and the roadbed.
Disclosure of Invention
The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide a measuring device that foundation subsides and road bed compressive deformation detected simultaneously.
The utility model discloses a measuring device for simultaneously detecting foundation settlement and roadbed compressive deformation, which comprises a base point level meter, an observation point level meter, a data acquisition box and a liquid storage tank for measuring foundation layer settlement, and a single-point displacement meter and an automatic acquisition instrument for measuring roadbed layer compressive deformation, wherein the roadbed layer is laid on the foundation layer; the base point material level meter and the observation point material level meter are both arranged on a ground base layer, and the single-point displacement meter is arranged in a road base layer; the height of the liquid storage tank is higher than that of the base point material level meter and the observation point material level meter; the method is characterized in that: the base point material level meters are arranged at positions where the foundation layer does not settle, the number of the observation point material level meters is multiple, and the plurality of material level meters are uniformly arranged on the foundation layer at intervals; the liquid storage tank is connected with the base point level meter and the observation point level meter through the air pipe and the liquid pipe, and the data acquisition box is connected with the base point level meter and the observation point level meter through the communication power supply cable; the quantity of single-point displacement meter is a plurality of, and a plurality of single-point displacement meters divide into upper and lower two-layer, and the single-point displacement meter in two-layer is measured the compressive deformation of the different height position of roadbed layer respectively, and the single-point displacement meter is connected with the automatic acquisition appearance through the signal acquisition cable.
The utility model discloses a measuring device that ground subsides and road bed compressive deformation detected simultaneously, the quantity of basic point level meter is 1, and the quantity of observation point level meter is 5; the number of the single-point displacement meters in the upper layer and the lower layer is 10, the number of the single-point displacement meters in each layer is 5, the height from the single-point displacement meter in the lower layer to the upper surface of the base layer is 1.5-2.5 m, and the height from the single-point displacement meter in the upper layer to the upper surface of the base layer is 3.5-4.5 m.
The utility model discloses a measuring device that ground subsides and road bed compressive deformation detected simultaneously, basic point level meter and observation point level meter constitute by the level meter main part and set up trachea interface, water pipe interface and the cable interface in the level meter main part, and trachea interface, water pipe interface on basic point level meter and the observation point level meter are connected with the liquid storage pot after establishing ties respectively, are connected with the data acquisition box after the cable interface on basic point level meter and the observation point level meter establishes ties mutually.
The utility model discloses a measuring device for simultaneously detecting foundation settlement and roadbed compression deformation, the single-point displacement meter comprises a cement mortar base, a screw rod, a displacement meter and an upper top plate, the cement mortar base is positioned in a roadbed layer, the lower end of the screw rod is fixed with an anchoring plate, the anchoring plate is fixed on the cement mortar base, and the displacement meter is fixed at the upper end of the screw rod; the upper top plate is connected with the upper end of the displacement meter through a connecting rod.
The beneficial effects of the utility model are that: the utility model discloses a measuring device, be provided with basic point level meter and observation point level meter in the foundation of land, be provided with in the foundation of road layer, lower two-layer single-point displacement meter, thus, not only realized the measurement of subsiding to the foundation of land layer, but also realized the compression deformation measurement to the foundation of road layer, solved present subside to ground and road bed and detect the drawback that can not distinguish foundation settlement volume and road bed compression deformation volume simultaneously, more be favorable to subsiding and road bed compression deformation's factor to the cause ground and carry out the analysis respectively, so that take and reduce or avoid ground subside and road bed compression deformation's counter-measure, be favorable to providing science for the construction of ground and road bed, reliable suggestion method, beneficial effect is showing.
Drawings
Fig. 1 is a schematic layout view of the measuring device for simultaneously detecting foundation settlement and roadbed compression deformation of the utility model;
fig. 2 is a cross-sectional view of the layout of the measuring device for simultaneously detecting the foundation settlement and the roadbed compression deformation;
FIG. 3 is a front view of the base point level meter and the measuring point level meter of the present invention;
FIG. 4 is a top view of the base point level meter and the measuring point level meter of the present invention;
FIG. 5 is a right side view of the center point level gauge and the measuring point level gauge of the present invention;
fig. 6 is a front view of the single-point displacement meter of the present invention;
fig. 7 is a perspective view of the single-point displacement meter of the present invention.
In the figure: the system comprises a foundation layer 1, a roadbed layer 2, a base point level meter 3, an observation point level meter 4, a single-point displacement meter 5, a signal acquisition cable 6, a vent pipe 7, a liquid through pipe 8, a communication power supply cable 9, a data acquisition box 10, a liquid storage tank 11, an automatic acquisition instrument 12, a level meter main body 13, a gas pipe connector 14, a water pipe connector 15, a cable connector 16, a cement mortar base 17, an anchoring plate 18, a PVC protection pipe 19, a screw rod 20, a displacement meter 21, a connecting rod 22 and an upper top plate 23.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 and fig. 2, have given respectively the utility model discloses a survey device's that ground subsides and subgrade compressive deformation detected simultaneously sketch and lay the cross-sectional view, be provided with 1 basic point level meter 3 and 5 observation point level meters 4 on the upper surface of shown ground basic unit 1, basic point level meter 3 sets up in the position department that ground basic unit 1 does not subside, and 5 observation point level meters 4 evenly set up in the settlement volume of awaiting measuring position department of ground basic unit 1. The data acquisition box 10 and the liquid storage tank 11 are arranged at positions which do not influence the travelling crane, the height of the liquid storage tank 11 is higher than the height of the base point level meter 3 and the observation point level meter 4, liquid is stored in the liquid storage tank 11, the bottom of the liquid storage tank 11 is connected with solution cavities in the base point level meter 3 and the observation point level meter 4 through a liquid pipe 8, and the upper end of the liquid storage tank 11 is connected with the base point level meter 3 and the observation point level meter 4 through a gas pipe 7; the data acquisition unit 10 is connected to the base point level gauge 3 and the observation point level gauge 4 via a communication supply cable 9. Thus, when the observation point level meter 4 sinks along with the foundation layer 1, the liquid pressure in the observation point level meter 4 changes, and the data acquisition box 10 realizes the measurement of the sedimentation of the foundation layer 1 by measuring the liquid level change.
The number of the single-point displacement meters 5 is 10, the 10 single-point displacement meters 5 are divided into an upper layer and a lower layer, the number of the single-point displacement meters 5 in the lower layer and the upper layer is 5, the 5 single-point displacement meters in the lower layer are used for measuring the compression deformation of the lower part of the roadbed layer 2, and the 5 single-point displacement meters in the upper layer are used for measuring the compression deformation of the upper part of the roadbed layer 2. Wherein, the height of the single-point displacement in the lower layer from the upper surface of the ground base layer 1 is 1.5 to 2.5m, preferably 2m, and the height of the single-point displacement in the upper layer from the upper surface of the ground base layer is 3.5 to 4.5m, preferably 4m. Automatic acquisition appearance 12 sets up in not influencing the driving position, and automatic acquisition appearance 12 is connected with single-point displacement meter 5 through signal acquisition cable 6, like this, through automatic acquisition appearance 12 to the signal acquisition of single-point displacement meter 5, can measure the compression deformation of roadbed layer 2.
It can be seen that the settlement measurement of the foundation layer 1 is realized by using the base point level meter 3 and the observation point level meter 4, the compression deformation measurement of the roadbed layer 2 is realized by using the single-point displacement meter 5 in the upper layer and the lower layer, and the foundation layer 1 settlement and the roadbed layer 2 compression deformation are simultaneously measured so as to respectively analyze the factors of the foundation layer 1 settlement and the roadbed layer 2 compression deformation.
As shown in fig. 3, 4 and 5, the front view, the top view and the right view of the base point level meter and the measuring point level meter of the present invention are respectively shown, which are composed of a level meter main body 13, an air pipe connector 14, a water pipe connector 15 and a cable connector 16, and the level meter is a mature product and commercially available. The gas pipe interface 14 and the water pipe interface 15 of the base point level meter 3 and the observation point level meter 4 are connected in series and then connected with the liquid storage tank 11, and the cable interface 16 of the base point level meter 3 and the observation point level meter 4 are connected in series through the signal acquisition cable 6 and then connected with the data acquisition box 10, so that the settlement measurement of the observation point displacement meter 4 is realized, and further the settlement measurement of the foundation layer 1 is realized.
The principle of measuring the settlement of the ground layer using the base point level meter 3 and the observation point level meter 4 is as follows:
(1) The liquid level variation quantity delta h1 of the base point level meter 3 is calculated according to the following formula:
Δ h1= base point level meter initial liquid level high-base point level meter current liquid level high;
(2) And the liquid level variation quantity delta hi of the observation point level meter i is calculated according to the following formula:
delta hi = observation point level meter i initial liquid level high-observation point level meter i current liquid level high
(3) And the amount of change (settlement amount) delta Hi of settlement or elevation of the level meter i at each observation point is calculated according to the following formula:
△Hi=△h1－△hi；
when the observation point calculation value delta Hi is a negative value, the observation point is lowered, and when the observation point calculation value delta Hi is a positive value, the observation point is raised.
As shown in fig. 6 and 7, the front view and the perspective view of the single-point displacement meter of the present invention are respectively shown, the single-point displacement meter 5 is composed of a cement mortar base 17, an anchoring plate 18, a PVC protection pipe 19, a screw 20, a displacement meter 21, a connecting rod 22 and an upper top plate 23, the cement mortar base 17 is embedded in the roadbed layer 2, the anchoring plate 18 is fixed on the upper surface of the cement mortar base 17, and the screw 20 is multi-section so as to be set according to the height of the roadbed layer 2. The lower end of the screw rod 20 is fixedly connected with the anchoring plate 18, and the PVC protection pipe 19 is arranged on the periphery of the screw rod 20 so as to protect the screw rod 20. The displacement gauge 21 is shown fixed to the upper end of the screw 20, the upper end of the displacement gauge 21 being connected to an upper top plate 23 via a connecting rod 22. When the roadbed layer 2 is compressed and deformed, the upper top plate 23 is displaced in the vertical direction, and the displacement is measured by the displacement meter 21.
The data acquisition tank 10 and the tank 11 should be designed in advance before installation and the bottoms should be hardened, and the tank 11 should be installed with the attention that the tank 11 is higher than any one of the base point level gauge 3 and the observation point level gauge 4, and is generally one-half to one-third higher than the highest level gauge in the range. And a pipeline with enough sedimentation is reserved in the middle of each level meter, so that the phenomenon that the pipeline is stretched to cause breakage and data errors caused by sedimentation is avoided.
In the installation process of the single-point displacement meter 5, according to the actual situation requirement, a vertical pit is dug, an anchor point is buried, cement mortar is used for paving below the anchor point to form a cement mortar base 17, then a screw rod 20 is connected, a PVC protection pipe 19 is sleeved outside the anchor point for protection, and after the protection is finished, backfilling and filling are carried out. And after the next layer of filling is finished, re-excavating at the anchoring point, finding the screw 20 of the previous section, connecting the new screw 20, taking the same protection measures, and paying attention to the fact that the height of the top of the screw 20 from the filling layer is reserved to be more than 10 centimeters so as to prevent the screw from being damaged due to the fact that construction machinery touches the screw in the construction process.
Claims (4)
1. A measuring device for simultaneously detecting foundation settlement and roadbed compressive deformation comprises a base point level meter (3), an observation point level meter (4), a data acquisition box (10) and a liquid storage tank (11) which are used for measuring the settlement of a foundation course (1), a single-point displacement meter (5) and an automatic acquisition instrument (12) which are used for measuring the compressive deformation of a roadbed course (2), wherein the roadbed is laid on the foundation course; the base point material level meter and the observation point material level meter are both arranged on a ground base layer, and the single-point displacement meter is arranged in a road base layer; the height of the liquid storage tank is higher than that of the base point material level meter and the observation point material level meter; the method is characterized in that: the base point material level meters are arranged at positions where the foundation layer does not settle, the number of the observation point material level meters is multiple, and the plurality of material level meters are uniformly arranged on the foundation layer at intervals; the liquid storage tank is connected with the base point level meter and the observation point level meter through an air pipe (7) and a liquid pipe (8), and the data acquisition box is connected with the base point level meter and the observation point level meter through a communication power supply cable (9); the number of the single-point displacement meters is multiple, the multiple single-point displacement meters are divided into an upper layer and a lower layer, the single-point displacement meters in the two layers respectively measure the compression deformation of the roadbed layer (2) at different height positions, and the single-point displacement meters are connected with the automatic acquisition instrument (12) through signal acquisition cables (6).
2. The apparatus for simultaneously detecting foundation settlement and subgrade compression deformation according to claim 1, characterized in that: the number of the base point level meters (3) is 1, and the number of the observation point level meters (4) is 5; the number of the single-point displacement meters (5) in the upper layer and the lower layer is 10, the number of the single-point displacement meters in each layer is 5, the height from the single-point displacement meter in the lower layer to the upper surface of the ground base layer (1) is 1.5 to 2.5m, and the height from the single-point displacement meter in the upper layer to the upper surface of the ground base layer is 3.5 to 4.5m.
3. The apparatus for measuring simultaneous settlement of foundation and compression deformation of roadbed according to claim 1 or 2, wherein: the base point material level meter (3) and the observation point material level meter (4) are respectively composed of a material level meter main body (13), and an air pipe interface (14), a water pipe interface (15) and a cable interface (16) which are arranged on the material level meter main body, the air pipe interfaces and the water pipe interfaces on the base point material level meter and the observation point material level meter are respectively connected with the liquid storage tank (11) after being connected in series, and the cable interfaces on the base point material level meter and the observation point material level meter are connected with the data acquisition box (10) after being connected in series.
4. The apparatus for measuring simultaneous settlement of foundation and compression deformation of roadbed according to claim 1 or 2, wherein: the single-point displacement meter (5) is composed of a cement mortar base (17), a screw rod (20), a displacement meter (21) and an upper top plate (23), the cement mortar base is positioned in the roadbed layer (2), an anchoring plate (18) is fixed at the lower end of the screw rod, the anchoring plate is fixed on the cement mortar base, and the displacement meter is fixed at the upper end of the screw rod; the upper top plate is connected with the upper end of the displacement meter through a connecting rod (22).
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| CN202223274548.4U CN218622163U (en) | 2022-12-07 | 2022-12-07 | Measuring device for simultaneously detecting foundation settlement and roadbed compression deformation |
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| CN202223274548.4U CN218622163U (en) | 2022-12-07 | 2022-12-07 | Measuring device for simultaneously detecting foundation settlement and roadbed compression deformation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124085A (en) * | 2023-04-18 | 2023-05-16 | 中铁二十三局集团有限公司 | Foundation settlement deformation measuring device and measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124085A (en) * | 2023-04-18 | 2023-05-16 | 中铁二十三局集团有限公司 | Foundation settlement deformation measuring device and measuring method |
| CN116124085B (en) * | 2023-04-18 | 2023-06-13 | 中铁二十三局集团有限公司 | Foundation settlement deformation measuring device and measuring method |
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