CN219319397U - Long-shore large-span bridge pier settlement observation system - Google Patents
Long-shore large-span bridge pier settlement observation system Download PDFInfo
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- CN219319397U CN219319397U CN202222998507.3U CN202222998507U CN219319397U CN 219319397 U CN219319397 U CN 219319397U CN 202222998507 U CN202222998507 U CN 202222998507U CN 219319397 U CN219319397 U CN 219319397U
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Abstract
The utility model discloses a settlement observation system for a long-shore large-span bridge pier, which comprises a first static level, a second static level, a pressure-guiding liquid pipe, a data acquisition unit and a data processor. According to the utility model, the first static leveling instrument and the second static leveling instrument are assembled, the data acquisition device is used for acquiring liquid level information, the data processor is used for determining sedimentation data according to the acquired liquid level information, and a measurer does not need to arrive at a site to perform actual measurement, so that field work of sedimentation observation can be completed indoors, the labor intensity of field measurement of the measurer is simplified, the overwater edge operation of the measurer is avoided, and the safety risk of the overwater edge operation of the measurer is eliminated. Meanwhile, in the aspect of measurement accuracy, the static level monitoring adopts automatic measurement by an instrument, and data is automatically transmitted to the background, so that artificial measurement errors are basically eliminated, and the observation accuracy is superior to that of a traditional method for carrying out river crossing level measurement by a manually operated total station.
Description
Technical Field
The utility model relates to the technical field of bridge engineering foundation settlement observation, in particular to a long-shore large-span bridge pier settlement observation system.
Background
Along with the continuous development of science and technology, the large-scale foundation engineering construction projects are gradually increased, and for large-span bridges crossing rivers, lakes and seas, most bridge abutment foundations are arranged in a water area far away from a embankment, the construction of the water area inevitably leads to higher safety risks, and the settlement of the bridge abutment is an important judgment basis for whether the bridge engineering is safe and stable. Therefore, how to quickly and accurately observe the settlement of the bridge abutment far away from the embankment, quickly feed back the result, and timely give an alarm when abnormal conditions occur, so that potential safety hazards of engineering construction are discovered early, and convenience is brought to engineering construction personnel to timely and reasonably solve the potential safety hazard points, which is very important.
At present, for settlement observation of a large-span bridge pier far away from a embankment, a traditional total station is adopted for river-crossing leveling measurement, no better measurement method is temporarily found, two high-precision total stations are adopted in the traditional river-crossing leveling measurement method, specific weather and specific sites are selected, repeated measurement is carried out on the pier for multiple times, and settlement observation work is completed, so that time and labor are wasted and efficiency is low. Meanwhile, in order to ensure the measurement accuracy, the measurement operation is generally carried out at night with relatively constant temperature in the observation time, so that the working environment faced by the measurement personnel is bad, and the safety risk of the operation on the water at night is high.
Disclosure of Invention
The utility model mainly aims to provide a settlement observation system for a long-shore large-span bridge pier, and aims to solve the technical problems of time consumption, labor consumption, low efficiency and high safety risk in the conventional settlement observation of the long-shore large-span bridge pier.
In order to achieve the above purpose, the utility model provides a settlement observation system for a long-shore large-span bridge abutment, comprising:
the first static level gauge is arranged at a static level monitoring base point;
the second static level gauge is arranged at a static level monitoring point;
the first end of the pressure guiding liquid pipe is connected with the interface of the first static level, and the second end of the pressure guiding liquid pipe is connected with the interface of the second static level;
the data acquisition device is connected with the liquid level sensor of the first hydrostatic level and the liquid level sensor of the second hydrostatic level;
and the data processor is connected with the data collector and is used for receiving the liquid level information of the liquid level sensor transmitted by the data collector so as to determine sedimentation data.
Optionally, the static level monitoring base point is set up on stable basis, first static level is fixed in on the stable basis through the base.
Optionally, the static level monitoring point sets up in pier shaft or cushion cap, the second static level pass through the base be fixed in pier shaft side or cushion cap top surface.
Optionally, the pressure guiding liquid pipe is arranged in the wire slot.
Optionally, the data acquisition device is connected with the first static level and the second static level through a cable, and the cable is arranged in the wire slot.
Optionally, the transmission medium adopts purified water or antifreeze fluid.
Optionally, the data collector is provided with a first communication module, the data processor is provided with a second communication module, and the data collector is in communication connection with the data processor through the first communication module and the second communication module and is used for sending collected liquid level information.
The utility model provides a settlement observation system for a long-shore large-span bridge pier, which comprises a first static level, a second static level, a pressure-guiding liquid pipe, a data acquisition device and a data processor. According to the utility model, the first static leveling instrument and the second static leveling instrument are assembled, the data acquisition device is used for acquiring liquid level information, the data processor is used for determining sedimentation data according to the acquired liquid level information, and a measurer does not need to arrive at a site to perform actual measurement, so that field work of sedimentation observation can be completed indoors, the labor intensity of field measurement of the measurer is simplified, the overwater edge operation of the measurer is avoided, and the safety risk of the overwater edge operation of the measurer is eliminated. Meanwhile, in the aspect of measurement accuracy, the static level monitoring adopts automatic measurement by an instrument, and data is automatically transmitted to the background, so that artificial measurement errors are basically eliminated, and the observation accuracy is superior to that of a traditional method for carrying out river crossing level measurement by a manually operated total station.
Drawings
FIG. 1 is a schematic diagram of a system for observing settlement of a long-shore large-span bridge abutment in an embodiment of the utility model;
fig. 2 is a schematic diagram of positions of monitoring points and monitoring base points in an embodiment of the present utility model.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments of the utility model, which would be apparent to one of ordinary skill in the art without inventive effort are within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicators are changed accordingly.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary that the technical solutions are based on the fact that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the utility model.
At present, in the related technical field, the existing long-shore large-span bridge abutment settlement observation scheme is time-consuming, labor-consuming, low in efficiency and high in safety risk.
To solve this problem, various embodiments of the system and method for observing the settlement of the long-shore large-span bridge abutment of the utility model are provided. According to the settlement observation system and method for the long-shore large-span bridge pier, the first static level gauge and the second static level gauge are assembled, the data acquisition device is used for acquiring the liquid level information, the data processor is used for determining the settlement data according to the acquired liquid level information, and the measurer does not need to arrive at the site for actual measurement, so that the field work of settlement observation can be completed indoors, the labor intensity of field measurement of the measurer is simplified, the water edge-facing operation of the measurer is avoided, and the safety risk of the water edge-facing operation of the measurer is eliminated. Meanwhile, in the aspect of measurement accuracy, the static level monitoring adopts automatic measurement by an instrument, and data is automatically transmitted to the background, so that the measurement error caused by 'human factor' which is one of factors generating measurement error is basically eliminated, and the observation accuracy is superior to that of the traditional method for manually operating the total station to carry out river crossing level measurement.
Referring to fig. 1, fig. 1 is a schematic diagram of a settlement observation system for a long-shore large-span bridge pier according to an embodiment of the present utility model.
In this embodiment, the long-shore large-span bridge pier settlement observation system comprises a static level gauge, a transmission medium, a pressure-guiding liquid pipe, a wire slot, a cable, a data acquisition unit and a data processor.
1. A static level gauge.
The embodiment adopts a magnetostrictive static level, and comprises a static level base, a liquid storage pipe, a sensor, a floating ball, a measuring rod, a vent pipe, a reserved cable and a three-way joint. The static level is arranged on the deformation body and is called a static level monitoring point, is arranged on a stable foundation and is connected with each monitoring point and is called a static level monitoring base point.
2. A transmission medium.
It is easy to understand that according to the four seasons temperature of different projects, purified water or antifreeze can be selected as a transmission medium, and when purified water is selected as the transmission medium, the temperature is prevented from being lower than zero degree by combining with the extreme weather of the places in recent years, so that the purified water is frozen to cause the failure of a static level monitoring system. When the antifreeze is selected as the transmission medium, the antifreeze must be the product produced by the same manufacturer, the same proportion and the same batch, and the antifreeze of different manufacturers is forbidden to be mixed, so that the specific gravity of the transmission medium is inconsistent, and the phenomenon of unbalanced liquid level is generated.
3. And a pressure-guiding liquid pipe.
In the embodiment, nylon pipes with specific hardness and transparent materials are adopted, the specification phi is 12 x 1.5mm, the single nylon pipes are connected through special straight-through connectors, and the joint is installed without seepage.
4. Wire slot.
The U-shaped wire casing of PU material is adopted in this embodiment, and the width and the high space that can satisfy guide-pressure liquid pipe and cable and put simultaneously of wire casing should be furnished with unified line groove lid above the wire casing, treat that full line hydrostatic level and pipeline installation inspection are accomplished after, the side can install the line groove lid.
5. And (5) a cable line.
The four-core shielding cable is adopted in the embodiment, one end of the cable is connected with a cable joint reserved by a static level gauge, and the other end of the cable joint is connected to a data acquisition box interface.
7. A data collector.
In this embodiment, the data collector includes a main controller, a power storage source, a wireless data transmission module (GPRS module), a sensor collection module, a chassis, and the like.
8. A data processor.
In this embodiment, the data processor is connected to the data collector, and is configured to receive the liquid level information of the liquid level sensor transmitted by the data collector, so as to determine sedimentation data.
The embodiment also provides a method for observing the settlement of the long-shore large-span bridge abutment based on the system for observing the settlement of the long-shore large-span bridge abutment.
In this embodiment, the method for observing settlement of the bridge abutment on the long shore with large span comprises the following specific steps:
first, a model of the static level is selected. According to the total settlement of the abutment provided in the design file, the range of the static level is reasonably selected, and a static level with the range of 10-30cm is generally selected as appropriate.
And secondly, setting a base point and a monitoring point of the static level. Stability of the hydrostatic level monitoring base point is related to the success or failure of the overall hydrostatic level monitoring system. The setting of the static level monitoring base point is reasonably determined according to the setting height of the monitoring point, and the monitoring base point is set on a concrete foundation which is stable and reliable in foundation, convenient in traffic and not easy to damage according to the measuring range of the static level gauge. The monitoring point is arranged on the monitoring body, and the position which is not easy to damage and can be stored for a long time is arranged. The installation height of the static level gauge for monitoring the base point and the monitoring point is not suitable to exceed 1cm. In general, considering sedimentation of the monitoring body, the difference in height between the monitoring point and the monitoring base point is preferably positive, as shown in fig. 2.
And thirdly, installing a static level base. And (3) confirming the positions of the monitoring base points and the monitoring points, driving expansion screws above or on the side surfaces of the concrete foundation and the monitoring body of the base points, and installing the base of the static level.
And fourthly, paving a wire slot, a pressure-guiding liquid pipe and a cable. According to the on-site topography, a route with gentle topography and unfavorable damage is selected, a wire groove is paved firstly, then a pressure guiding liquid pipe and a cable are paved in the wire groove, one end of the pressure guiding liquid pipe is connected with a monitoring base point static level gauge interface, the other end of the pressure guiding liquid pipe is connected with the monitoring point static level gauge interface, and when the length of the pressure guiding liquid pipe is insufficient, the pressure guiding liquid pipe is connected through a straight joint. Right-angle turning does not occur when the wire slot and the pressure-guiding liquid pipe are paved, the pressure-guiding liquid pipe is prevented from being folded, and the circulation of transmission media in the pressure-guiding liquid pipe is prevented. The wire slot is not suitable for right angle turning when laying.
And fifthly, introducing a transmission medium. After the connection of the pressure guide liquid pipe is completed, the transmission medium is slowly poured into the static level liquid storage barrel of the monitoring base point, gradually flows into the static level liquid storage pipe of the monitoring point through the pressure guide liquid pipe, and special persons are arranged to check the liquid filling condition in the pressure guide liquid pipe one by one during and after the transmission medium is introduced, and timely remove bubbles in the pressure guide liquid pipe, wherein the bubbles are strictly forbidden in the pressure guide liquid pipe.
And sixthly, data acquisition. After the filling is completed, one end of the cable is connected with the data acquisition device, and the other end of the cable is connected with the reserved cable of the static level sensor. The system is debugged and the data acquisition time of the static level monitoring system is set, and the monitoring system automatically acquires the liquid level readings of each point static level according to the acquisition interval time, so that 24 hours of unattended operation in the whole day is realized.
And seventhly, carrying out initial absolute elevation assignment. Because the static leveling is limited by the principle of static leveling, the absolute elevation of each monitoring point cannot be directly obtained by the static leveling, and therefore, after the debugging and setting of the automatic static leveling monitoring system are finished, the initial elevation value of each monitoring point is obtained by adopting a traditional measuring method.
And seventh, data processing. After the automatic acquisition of the field data is completed, the monitoring system automatically sends the monitoring data to the data storage cloud platform in real time, and a user downloads the monitoring data according to the needs. Based on the automatic monitoring data, the user may select a level reading at a constant night temperature (suggesting a selection of 0 to 6 hours) for data processing. When the liquid level difference between the first base point and the monitoring point is used as the initial height difference, the liquid level difference between the next day is used as the current settlement amount, and the difference between the next day and the initial liquid level difference is used as the accumulated settlement amount.
(1) The relative height difference Δhi (mm) of the reference point of the hydrostatic level with respect to the monitored reference point can be calculated according to the following formula:
△hi＝Fj－Fi
note that: fj—the current level reading of the hydrostatic level datum point; fi—current level reading of the point of observation of the hydrostatic level.
(2) The current settlement quantity delta Hi (mm) of each static level monitoring point relative to the previous height difference can be calculated according to the following formula:
△Hi＝△hi this time －△hi Last time
Note that: delta Hi is the current settlement of the static level monitoring point, the positive value is rising, and the negative value is falling; deltahi This time The height difference of the liquid level of the monitoring point relative to the liquid level of the monitoring base point in the same time period is set; deltahi This time The height difference of the liquid level of the monitoring point relative to the liquid level of the monitoring base point is the previous day time period.
(3) The cumulative settlement quantity DeltaHi (mm) of each monitoring point of the static leveling instrument relative to the first height difference can be calculated according to the following formula:
△Hi accumulation of ＝△hi This time －△hi First time
Note that: delta Hi Accumulation of Accumulating settlement for the static level monitoring points, wherein positive values are rising, and negative values are falling; deltahi This time The height difference of the liquid level of the monitoring point relative to the liquid level of the monitoring base point in the same time period is set; deltahi First time The initial height difference of the liquid level of the monitoring point relative to the liquid level of the monitoring base point in the same time period for the first time.
(4) The assumed absolute elevation value Hi (mm) of each hydrostatic level monitoring point can be calculated according to the following formula:
Hi＝Hi first assignment of monitoring points +△Hi Accumulation of
Note that: hi (Hi) First assignment of monitoring points The method comprises the steps of firstly obtaining an elevation value of a monitoring point by adopting a traditional measuring method, and giving an absolute elevation value to the bottom of a static level; delta Hi Accumulation of Is the accumulated settlement amount per day.
The settlement observation method for the large-span bridge abutment far away from the embankment is long in observation route, simple to lay and convenient to operate, can realize the settlement observation work of the large-span bridge abutment far away from the embankment for more than 1 km, realizes unmanned real-time automatic monitoring, and can complete the settlement observation task without leaving the home of a measurer. Compared with the traditional measuring method, the method has the advantages that complicated and expensive total stations and other measuring equipment are not required to be carried, the investment of expensive instruments and equipment is reduced, about 70% of personnel investment is reduced, and the measuring efficiency is improved. After the static level automatic monitoring system is distributed and debugged, a measurer only needs to complete one-time field measurement when observing for the first time, obtains the initial absolute elevation of each monitoring point, and then only needs to carry out daily inspection at certain intervals, so that the measurer does not need to arrive at the site to carry out actual measurement, field work of settlement observation can be completed indoors, the labor intensity of field measurement of the measurer is simplified, the water edge working of the measurer is avoided, and the safety risk of the water edge working of the measurer is eliminated. Meanwhile, in the aspect of measurement accuracy, the static level monitoring adopts automatic measurement by an instrument, and data is automatically transmitted to the background, so that the measurement error caused by 'human factor' which is one of factors generating measurement error is basically eliminated, and the observation accuracy is superior to that of the traditional method for manually operating the total station to carry out river crossing level measurement.
The foregoing description is only of the preferred embodiments of the utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalent structure or equivalent flow scheme disclosed in the specification and drawings, or any other related art, directly or indirectly, as desired.
Claims (7)
1. The utility model provides a long-shore large-span bridge pier settlement observation system which characterized in that includes:
the first static level gauge is arranged at a static level monitoring base point;
the second static level gauge is arranged at a static level monitoring point;
the first end of the pressure guiding liquid pipe is connected with the interface of the first static level, and the second end of the pressure guiding liquid pipe is connected with the interface of the second static level;
the data acquisition device is connected with the liquid level sensor of the first hydrostatic level and the liquid level sensor of the second hydrostatic level;
and the data processor is connected with the data collector and is used for receiving the liquid level information of the liquid level sensor transmitted by the data collector so as to determine sedimentation data.
2. The long shore bridge pier settlement observation system of claim 1, wherein the static level monitoring base point is disposed on a stable foundation, and the first static level is fixed on the stable foundation by a base.
3. The system for observing settlement of a long-shore bridge pier of claim 1, wherein the static level monitoring point is arranged on a pier body or a bearing platform, and the second static level is fixed on the side surface of the pier body or the top surface of the bearing platform through a base.
4. The system for observing settlement of a long-shore large-span bridge pier according to claim 1, wherein the pressure-guiding liquid pipe is arranged in a wire slot.
5. The long shore bridge pier settlement observation system of claim 1, wherein said data collector connects said first hydrostatic level and said second hydrostatic level via cables, said cables being disposed in a raceway.
6. The system for observing settlement of a long-span bridge pier on a far shore according to claim 1, wherein the transmission medium adopts purified water or antifreeze solution.
7. The long-shore large-span bridge pier settlement observation system according to claim 1, wherein the data collector is provided with a first communication module, the data processor is provided with a second communication module, and the data collector is in communication connection with the data processor through the first communication module and the second communication module and is used for sending collected liquid level information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222998507.3U CN219319397U (en) | 2022-11-10 | 2022-11-10 | Long-shore large-span bridge pier settlement observation system |
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| CN202222998507.3U CN219319397U (en) | 2022-11-10 | 2022-11-10 | Long-shore large-span bridge pier settlement observation system |
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