CN113418514A - Tower column monitoring system and tower column monitoring method - Google Patents
Tower column monitoring system and tower column monitoring method Download PDFInfo
- Publication number
- CN113418514A CN113418514A CN202110597054.0A CN202110597054A CN113418514A CN 113418514 A CN113418514 A CN 113418514A CN 202110597054 A CN202110597054 A CN 202110597054A CN 113418514 A CN113418514 A CN 113418514A
- Authority
- CN
- China
- Prior art keywords
- tower
- formwork
- monitoring
- column
- monitoring assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000009415 formwork Methods 0.000 claims abstract description 71
- 230000009194 climbing Effects 0.000 claims abstract description 64
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 238000010276 construction Methods 0.000 abstract description 44
- 230000008569 process Effects 0.000 abstract description 19
- 238000013461 design Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 17
- 239000000725 suspension Substances 0.000 description 15
- 230000008859 change Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a tower column monitoring system and a method, wherein the tower column comprises a lower tower, a middle tower and an upper tower, the lower tower is arranged on a foundation, the middle tower is arranged on the lower tower, and the upper tower is arranged on the middle tower; a first climbing formwork is arranged on the outer wall of the lower tower, and a first monitoring assembly is arranged on the first climbing formwork; a second formwork climbing frame is arranged on the outer wall of the middle tower, and a second monitoring assembly is arranged on the second formwork climbing frame; and a third climbing formwork is arranged on the outer wall of the lower tower, and a third monitoring assembly is arranged on the third climbing formwork. According to the technical scheme, the upper layer, the middle layer and the lower layer of the tower column are monitored in real time, so that a bridging target is effectively controlled, the structural safety and the construction safety of a bridge in the construction process are ensured, the influence of various parameter errors influencing the target in the construction process on the bridging target is corrected, and the structural internal force and the linear type of the tower column after bridging meet the design requirements.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a tower column monitoring system and a tower column monitoring method.
Background
Suspension bridges, also known as suspension bridges, are bridges in which cables (or steel chains) suspended from pylons and anchored to both banks (or ends of the bridge) serve as the main load-bearing members of the superstructure. The cable geometry is determined by the equilibrium condition of the forces, typically approaching a parabola. A plurality of suspension rods are suspended from the cable to suspend the deck, and stiffening beams are often provided between the deck and the suspension rods to form a combined system with the cable to reduce deflection deformation caused by loading.
The largest forces in a suspension bridge are the tension in the suspension cables and the pressure in the tower. Since the tower is substantially free from lateral forces, its construction can be made quite slim and, in addition, the suspension cables have a certain stabilizing effect on the tower. If the weight of the suspension wire is disregarded in the calculation, the suspension wire forms a parabola. The process of calculating the suspension bridge thus becomes very simple. The suspension cables of old suspension bridges are generally iron chains or iron rods connected together. Modern suspension cables are typically multi-strand, high strength steel wires.
The tower frame is composed of a lower tower column, a middle tower column and an upper tower column, and in the construction process of constructing the suspension bridge, as the construction period of the suspension bridge is very long, the bridge can be caused to deform beyond relevant standards due to the influence of factors such as severe weather influence, geological structure, improper construction operation and the like, which are caused by heavy rainstorm, and the like, so that structural damage is caused, and great potential safety hazards exist.
Disclosure of Invention
The invention mainly aims to provide a tower column monitoring system and a tower column monitoring method, and aims to solve the technical problem that great potential safety hazards exist in bridge deformation in bridge construction in the prior art.
In order to achieve the above object, the present invention provides a tower monitoring system, comprising:
the tower column comprises a lower tower, a middle tower and an upper tower, wherein the lower tower is arranged on a foundation, the middle tower is arranged on the lower tower, and the upper tower is arranged on the middle tower;
a first climbing formwork is arranged on the outer wall of the lower tower, and a first monitoring assembly is arranged on the first climbing formwork;
a second formwork climbing frame is arranged on the outer wall of the middle tower, and a second monitoring assembly is arranged on the second formwork climbing frame;
and a third climbing formwork is arranged on the outer wall of the lower tower, and a third monitoring assembly is arranged on the third climbing formwork.
Optionally, the cross section of the first formwork climbing frame in the horizontal direction is rectangular, and the first monitoring assembly comprises a plurality of first total stations;
the first total station is arranged at the top points of the periphery of the first formwork climbing frame;
the middle positions of the peripheral side walls of the first formwork climbing frame are respectively provided with one first total station;
and the total station is arranged at the middle position between each vertex and the adjacent side wall on the first formwork climbing frame.
Optionally, the second formwork climbing frame is arranged in a rectangular shape along the cross section in the horizontal direction, the second monitoring assembly comprises a plurality of second total stations, and one of the second total stations is arranged at the middle position of the peripheral side wall of the second formwork climbing frame.
Optionally, a groove is formed in a side wall of one side of the third formwork climbing frame, the third formwork climbing frame is arranged in an axisymmetric manner along a cross section in the horizontal direction, and the third monitoring assembly includes a plurality of third total stations;
the third total station is arranged at the top points of the periphery of the third formwork climbing frame;
and the middle positions of the peripheral side walls of the third formwork climbing frame are respectively provided with one third total station, and the middle position of the groove bottom of the groove and the middle position of the side wall on the opposite side of the groove are positioned on the same symmetry axis.
Optionally, the tower column further includes an upper beam, a middle beam and a lower beam, the upper beam is disposed on the lower tower, the middle beam is disposed on the middle tower, and the lower beam is disposed on the upper tower;
the upper cross beam is provided with a fourth monitoring assembly, the middle cross beam is provided with a fifth monitoring assembly, and the lower cross beam is provided with a sixth monitoring assembly.
Optionally, a cross section of the lower beam in the horizontal direction is rectangular, the fourth monitoring assembly includes a plurality of fourth total stations, one fourth total station is respectively disposed on vertexes around the lower beam, and one fourth total station is respectively disposed at a middle position of a side wall of the lower beam parallel to the transverse bridge direction.
Optionally, a first installation platform is arranged on the middle cross beam, a cross section of the first installation platform in the horizontal direction is rectangular, the fifth monitoring assembly includes a plurality of fifth total stations, one fifth total station is arranged at each vertex of the periphery of the first installation platform, and one fifth total station is arranged at each middle position of the peripheral side wall of the first installation platform.
Optionally, a second installation table is arranged on the upper cross beam, the second installation table is arranged in a rectangular shape along the cross section in the horizontal direction, the sixth monitoring assembly comprises a plurality of sixth total stations, and one sixth total station is arranged at each of the middle positions of the peripheral side walls of the second installation table.
Optionally, the tower column monitoring system further includes a plurality of temperature sensors, and the temperature sensors are respectively disposed on the lower tower, the middle tower and the upper tower.
In addition, in order to solve the above problems, the present invention further provides a tower monitoring method, which is applied to the tower monitoring system, and the tower monitoring method includes:
monitoring the space parameter information of a lower tower, a middle tower and an upper tower;
calculating the space parameter errors of the lower tower, the middle tower and the upper tower according to the parameter information;
judging whether the parameter error is greater than or equal to a preset error or not, and obtaining a corresponding judgment result;
and carrying out alarm prompt according to the judgment result.
According to the technical scheme, the upper layer, the middle layer and the lower layer of the tower column are monitored in real time, so that a bridging target is effectively controlled, the structural safety and the construction safety of a bridge in the construction process are ensured, the influence of various parameter errors influencing the target in the construction process on the bridging target is corrected, and the structural internal force and the linear type of the tower column after bridging meet the design requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first formwork climbing frame in the tower column monitoring system;
fig. 2 is a schematic structural diagram of a second formwork climbing frame in the tower column monitoring system;
fig. 3 is a schematic structural diagram of a third formwork climbing frame in the tower monitoring system;
FIG. 4 is a schematic structural view of a lower cross beam in the tower monitoring system;
FIG. 5 is a schematic structural diagram of a middle cross beam in the tower monitoring system;
FIG. 6 is a schematic structural view of an upper cross beam in the tower monitoring system;
fig. 7 is a schematic flow chart of the tower monitoring method according to the first embodiment.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 11 | |
12 | First total station |
| 21 | |
22 | Second |
| 31 | |
32 | Third |
| 33 | Groove | 41 | |
| 42 | Fourth |
51 | |
| 52 | Fifth |
53 | First mounting table |
| 61 | Upper beam | 62 | Sixth |
| 63 | Second mounting table |
The implementation, functional features and advantages of the objects of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a tower column monitoring system, please refer to fig. 1-3, which comprises a tower column, wherein the tower column comprises a lower tower, a middle tower and an upper tower, the lower tower is arranged on a foundation, the middle tower is arranged on the lower tower, and the upper tower is arranged on the middle tower; a first climbing formwork is arranged on the outer wall of the lower tower, and a first monitoring assembly is arranged on the first climbing formwork; a second formwork climbing frame is arranged on the outer wall of the middle tower, and a second monitoring assembly is arranged on the second formwork climbing frame; and a third formwork climbing frame is arranged on the outer wall of the lower tower, and a third monitoring assembly is arranged on the third formwork climbing frame.
In the process of building a bridge, a plurality of tower columns are required to be arranged on two sides of a bridge floor for fixing. The tower column comprises an upper tower, a middle tower and a lower tower, wherein the lower tower is arranged on a foundation and is positioned at the lowest part of the tower column, and the upper tower is positioned at the highest part of the tower column. The outer wall of the lower tower, the middle tower and the upper tower is provided with a climbing frame for construction, and the monitoring component is arranged on the climbing frame to monitor the state of the tower column in real time. The construction monitoring principle of the tower column mainly comprises the internal force of the tower column, the line type of the tower column and the horizontal deviation requirement of the tower top of the tower column. The real-time monitoring of the internal force of the tower column is an important control measure for ensuring the construction safety of the whole tower column, the line type of the tower column and the tower top deviation requirement of the tower column mainly refer to a bare tower, firstly, the requirements of design and specification, acceptance and acceptance specification and the like are met, and secondly, the tower top deviation caused by asymmetric load, cable force, local temperature and the like after construction and bridge formation is treated differently and meets the requirements of design and relevant specifications.
In this embodiment, the first monitoring assembly, the second monitoring assembly and the third monitoring assembly are used for respectively detecting a lower tower, a middle tower and an upper tower, and obtaining space parameter information of the tower column; calculating space parameter errors of the lower tower, the middle tower and the upper tower according to a theoretical calculation conclusion and the parameter information; judging whether the parameter error is greater than or equal to a preset error or not; when the parameter error is larger than or equal to the preset error, alarming is carried out to prompt constructors or related personnel to adjust so as to avoid accidents, and therefore the safety, stability and reliability of the tower column monitoring system are improved. The parameter information comprises deformation parameters of the upright column and the support, rigidity parameters of the template, deformation parameters of the beam section steel and the like in the construction process of the tower column. And measuring the parameters after the construction stage of the formwork support frame installation of the tower column is completed, the formwork installation construction stage is completed, the reinforcing steel bar installation construction stage is completed, concrete is poured before and after concrete is poured and 50% of the concrete is poured, and specifically, alarming is carried out when the parameters have errors larger than or equal to 3 mm through settlement observation (third-level measurement) of the first monitoring assembly, the second monitoring assembly and the third monitoring assembly.
It should be noted that the monitoring process specifically includes: firstly, after concrete is poured on each section of the tower column, monitoring the strain of a concerned cross section in real time; secondly, a plurality of temperature sensors are arranged on the tower column and are arranged on the lower tower, the middle tower and the upper tower in a buried mode, and the lower tower, the middle tower and the upper tower are respectively provided with a plurality of temperature sensors so as to comprehensively monitor the temperatures of the lower tower, the middle tower and the upper tower, enhance the data collection of temperature change and establish temperature field statistical data of the tower column according to elevation change, so that the deformation influence of the temperature change on the tower column can be accurately estimated; thirdly, carrying out elevation control measurement on relevant positions of important parts such as the lower tower, the upper cross beam, the middle tower and the upper tower (a cable anchoring area, a tower top and the like), and timely adjusting according to actual construction conditions to avoid error accumulation; measuring the tower top coordinate of the bare tower after the tower column is closed, and providing a calculation basis for measuring the tower top deviation in the main beam construction; thirdly, in the subsequent main beam construction process, strain, temperature field and tower top deviation of the cross section of the important position of the tower column are monitored during each time of tensioning of the stay cable and cable force adjustment; thirdly, when the cable guide pipe is installed, the overall spatial position of the cable guide pipe is controlled and measured; thirdly, in the construction process of the tower column, a transverse temporary support is arranged on the middle tower, so that the tower column is prevented from being damaged due to overlarge bending moment at the root of the inclined middle tower column under the action of self weight; and simultaneously restraining the inward inclination of the middle tower. The application of the jacking force of the transverse temporary support is carried out according to data provided by construction monitoring.
According to the technical scheme, the upper layer, the middle layer and the lower layer of the tower column are monitored in real time, so that a bridging target is effectively controlled, the structural safety and the construction safety of a bridge in the construction process are ensured, the influence of various parameter errors influencing the target in the construction process on the bridging target is corrected, and the structural internal force and the linear type of the tower column after bridging meet the design requirements.
Specifically, referring to fig. 1, a cross section of the first formwork climbing frame in the horizontal direction is rectangular, and the first monitoring assembly includes a plurality of first total stations; the first total station is arranged at the top points of the periphery of the first formwork climbing frame; the middle positions of the peripheral side walls of the first formwork climbing frame are respectively provided with one first total station; and the total station is arranged at the middle position between each vertex and the adjacent side wall on the first formwork climbing frame. In this embodiment, a cross-sectional view of the first formwork climbing frame is as shown in fig. 1, and one first total station is respectively arranged at four vertex angles of the cross-sectional view; meanwhile, the first total station is respectively arranged at the middle position of the side wall, and the total station at the position is also positioned on the transverse axis and the longitudinal axis of the section; meanwhile, another one of the first total stations is arranged between the first total stations at the two positions, and the arranged position is located in the middle of the vertex angle position and the side wall middle position, namely one first total station is arranged at each of the positions located at the long sides 1/4, 2/4, 3/4 and 4/4 of the section, wherein the positions 1/4 and 4/4 represent the vertex angle position of the long side, and one first total station is arranged at the middle of the wide side, so that 12 first total stations are arranged on the lower tower in total. And a monitoring prism is arranged at a measuring point, and a total station is used for monitoring whether the creeping formwork is displaced or not, so that the geometric position and the linear shape of the tower column are ensured.
Specifically, referring to fig. 2, the cross section of the second formwork climbing frame along the horizontal direction is rectangular, the second monitoring assembly includes a plurality of second total stations, and one second total station is respectively disposed at the middle position of the peripheral side wall of the second formwork climbing frame. In this embodiment, as shown in fig. 2, a cross-sectional view of the second formwork climbing frame is provided, and one second total station is respectively disposed at the middle positions of the peripheral side walls of the cross-sectional view, so that a total of 4 second total stations are provided on the middle tower. And a monitoring prism is arranged at a measuring point, and a total station is used for monitoring whether the creeping formwork is displaced or not, so that the geometric position and the linear shape of the tower column are ensured.
Specifically, referring to fig. 3, a groove is formed in a side wall of one side of the third formwork support, the third formwork support is arranged in an axisymmetric manner along a section in the horizontal direction, and the third monitoring assembly includes a plurality of third total stations; the third total station is arranged at the top points of the periphery of the third formwork climbing frame; and the middle positions of the peripheral side walls of the third formwork climbing frame are respectively provided with one third total station, and the middle position of the groove bottom of the groove and the middle position of the side wall on the opposite side of the groove are positioned on the same symmetry axis. In this embodiment, a cross-sectional view of the third formwork climbing frame is as shown in fig. 3, and one third total station is respectively arranged at four vertex angles of the cross-sectional view; meanwhile, the third total station is respectively arranged in the middle of the peripheral side walls, and the total stations at the position are also positioned on the transverse axis and the longitudinal axis of the section; it should be noted that, a groove is formed in the third formwork climbing frame, the groove is also symmetrically arranged, and a symmetry axis of the groove is overlapped with a symmetry axis on a long side of the sectional view, so that the third total station located on the side wall is arranged on the bottom wall of the groove, and 8 third total stations are always arranged on the upper tower. And a monitoring prism is arranged at a measuring point, and a total station is used for monitoring whether the creeping formwork is displaced or not, so that the geometric position and the linear shape of the tower column are ensured.
In addition, the tower column further comprises an upper cross beam, a middle cross beam and a lower cross beam, wherein the upper cross beam is arranged on the lower tower, the middle cross beam is arranged on the middle tower, and the lower cross beam is arranged on the upper tower; in order to further improve the monitoring accuracy of the tower column monitoring system and obtain comprehensive parameter information, a fourth monitoring assembly is arranged on the upper cross beam, a fifth monitoring assembly is arranged on the middle cross beam, and a sixth monitoring assembly is arranged on the lower cross beam.
Specifically, referring to fig. 4, a cross section of the lower beam along the horizontal direction is rectangular, the fourth monitoring assembly includes a plurality of fourth total stations, one fourth total station is respectively disposed at vertexes of the periphery of the lower beam, and one fourth total station is respectively disposed at a middle position of a side wall of the lower beam parallel to the transverse bridge direction. In this embodiment, a cross-sectional view of the lower beam is as shown in fig. 4, and one fourth total station is respectively arranged at four vertex angles of the cross-sectional view; meanwhile, the fourth total station is arranged in the middle of the long edge of the cross section, it needs to be explained that a plurality of tower columns can be built in the process of bridge laying, the fourth total station is arranged on different tower columns respectively, 12 monitoring points are matched through the mutual matching of the fourth total station between any two tower columns, for example, the upper beam with small mileage along the bridge direction is matched with the upper beam with large mileage along the bridge direction, the settlement is measured by using a level gauge, and the vertical displacement of the bracket is monitored.
Specifically, referring to fig. 5, a first installation platform is arranged on the middle cross beam, the cross section of the first installation platform in the horizontal direction is rectangular, the fifth monitoring assembly includes a plurality of fifth total stations, one fifth total station is arranged at each vertex of the periphery of the first installation platform, and one fifth total station is arranged at each middle position of the side wall of the periphery of the first installation platform. The two ends of the middle cross beam are respectively connected with a tower column of the middle tower, the first mounting table is located in the middle of the middle cross beam, the cross section of the first mounting table is rectangular, and referring to fig. 5, the fifth total station is respectively arranged at four vertex angles of the cross section; meanwhile, the fifth total station is respectively arranged at the middle position of the side wall, and the total stations at the position are also positioned on the transverse axis and the longitudinal axis of the section; therefore, in the present embodiment, 8 total stations are provided, and the settlement is measured by the level gauge and the vertical displacement of the bracket is monitored.
Specifically, referring to fig. 6, a second mounting table is arranged on the upper beam, the section of the second mounting table in the horizontal direction is rectangular, the sixth monitoring assembly includes a plurality of sixth total stations, and one sixth total station is arranged at each of the middle positions of the peripheral side walls of the second mounting table. The two ends of the upper cross beam are respectively connected with a tower column of the upper tower, the second mounting table is located in the middle of the middle cross beam, the cross section of the second mounting table is rectangular, please refer to fig. 6, the sixth total station is respectively arranged in the middle of the side wall of the cross section, and the total stations in the position are also located on the transverse axis and the longitudinal axis of the cross section; therefore, in the present embodiment, there are 4 total stations, and the settlement is measured by the level gauge and the vertical displacement of the bracket is monitored.
In addition, in order to solve the above problem, the present invention further provides a tower column monitoring method, where the tower column monitoring method is applied to the tower column monitoring system, and referring to fig. 7, the tower column monitoring method includes:
step S10: monitoring the space parameter information of a lower tower, a middle tower and an upper tower;
step S20: calculating the space parameter errors of the lower tower, the middle tower and the upper tower according to the parameter information;
step S30: judging whether the parameter error is greater than or equal to a preset error or not, and obtaining a corresponding judgment result;
step S40: and carrying out alarm prompt according to the judgment result.
In the process of building a bridge, a plurality of tower columns are reasonably fixed on two sides of a bridge deck. The tower column comprises an upper tower, a middle tower and a lower tower, wherein the lower tower is arranged on a foundation and is positioned at the lowest part of the tower column, and the upper tower is positioned at the highest part of the tower column. The outer wall of the lower tower, the middle tower and the upper tower is provided with a climbing frame for construction, and the monitoring component is arranged on the climbing frame to monitor the state of the tower column in real time. The construction monitoring principle of the tower column mainly comprises the internal force of the tower column, the line type of the tower column and the horizontal deviation requirement of the tower top of the tower column. The real-time monitoring of the internal force of the tower column is an important control measure for ensuring the construction safety of the whole tower column, the line type of the tower column and the tower top deviation requirement of the tower column mainly refer to a bare tower, firstly, the requirements of design and specification, acceptance and acceptance specification and the like are met, and secondly, the tower top deviation caused by asymmetric load, cable force, local temperature and the like after construction and bridge formation is treated differently and meets the requirements of design and relevant specifications.
In this embodiment, the first monitoring assembly, the second monitoring assembly and the third monitoring assembly are used for respectively detecting a lower tower, a middle tower and an upper tower, and obtaining space parameter information of the tower column; calculating space parameter errors of the lower tower, the middle tower and the upper tower according to a theoretical calculation conclusion and the parameter information; judging whether the parameter error is greater than or equal to a preset error or not; when the parameter error is larger than or equal to the preset error, alarming is carried out to prompt constructors or related personnel to adjust so as to avoid accidents, and therefore the safety, stability and reliability of the tower column monitoring system are improved. The parameter information comprises deformation parameters of the upright column and the support, rigidity parameters of the template, deformation parameters of the beam section steel and the like in the construction process of the tower column. And measuring the parameters after the construction stage of the formwork support frame installation of the tower column is completed, the formwork installation construction stage is completed, the reinforcing steel bar installation construction stage is completed, concrete is poured before and after concrete is poured and 50% of the concrete is poured, and specifically, alarming is carried out when the parameters have errors larger than or equal to 3 mm through settlement observation (third-level measurement) of the first monitoring assembly, the second monitoring assembly and the third monitoring assembly.
It should be noted that step S10 specifically includes: firstly, after concrete is poured on each section of the tower column, monitoring the strain of a concerned cross section in real time; secondly, a plurality of temperature sensors are arranged on the tower column and are arranged on the lower tower, the middle tower and the upper tower in a buried mode, and the lower tower, the middle tower and the upper tower are respectively provided with a plurality of temperature sensors so as to comprehensively monitor the temperatures of the lower tower, the middle tower and the upper tower, enhance the data collection of temperature change and establish temperature field statistical data of the tower column according to elevation change, so that the deformation influence of the temperature change on the tower column can be accurately estimated; thirdly, carrying out elevation control measurement on relevant positions of important parts such as the lower tower, the upper cross beam, the middle tower and the upper tower (a cable anchoring area, a tower top and the like), and timely adjusting according to actual construction conditions to avoid error accumulation; measuring the tower top coordinate of the bare tower after the tower column is closed, and providing a calculation basis for measuring the tower top deviation in the main beam construction; thirdly, in the subsequent main beam construction process, strain, temperature field and tower top deviation of the cross section of the important position of the tower column are monitored during each time of tensioning of the stay cable and cable force adjustment; thirdly, when the cable guide pipe is installed, the overall spatial position of the cable guide pipe is controlled and measured; thirdly, in the construction process of the tower column, a transverse temporary support is arranged on the middle tower, so that the tower column is prevented from being damaged due to overlarge bending moment at the root of the inclined middle tower column under the action of self weight; and simultaneously restraining the inward inclination of the middle tower. The application of the jacking force of the transverse temporary support is carried out according to data provided by construction monitoring.
According to the technical scheme, the upper layer, the middle layer and the lower layer of the tower column are monitored in real time, so that a bridging target is effectively controlled, the structural safety and the construction safety of a bridge in the construction process are ensured, the influence of various parameter errors influencing the target in the construction process on the bridging target is corrected, and the structural internal force and the linear type of the tower column after bridging meet the design requirements.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A tower monitoring system, comprising:
the tower column comprises a lower tower, a middle tower and an upper tower, wherein the lower tower is arranged on a foundation, the middle tower is arranged on the lower tower, and the upper tower is arranged on the middle tower;
a first climbing formwork is arranged on the outer wall of the lower tower, and a first monitoring assembly is arranged on the first climbing formwork;
a second formwork climbing frame is arranged on the outer wall of the middle tower, and a second monitoring assembly is arranged on the second formwork climbing frame;
and a third climbing formwork is arranged on the outer wall of the lower tower, and a third monitoring assembly is arranged on the third climbing formwork.
2. The tower column monitoring system of claim 1, wherein the first formwork climbing frame is rectangular in cross section in a horizontal direction, and the first monitoring assembly comprises a plurality of first total stations;
the first total station is arranged at the top points of the periphery of the first formwork climbing frame;
the middle positions of the peripheral side walls of the first formwork climbing frame are respectively provided with one first total station;
and the total station is arranged at the middle position between each vertex and the adjacent side wall on the first formwork climbing frame.
3. The tower column monitoring system according to claim 1, wherein the second formwork climbing frame is rectangular in cross section in the horizontal direction, and the second monitoring assembly comprises a plurality of second total stations, wherein one second total station is provided at each of the middle positions of the peripheral side walls of the second formwork climbing frame.
4. The tower column monitoring system according to claim 3, wherein a groove is provided on a side wall of the third formwork, the third formwork is disposed in axial symmetry along a cross section in a horizontal direction, and the third monitoring assembly comprises a plurality of third total stations;
the third total station is arranged at the top points of the periphery of the third formwork climbing frame;
and the middle positions of the peripheral side walls of the third formwork climbing frame are respectively provided with one third total station, and the middle position of the groove bottom of the groove and the middle position of the side wall on the opposite side of the groove are positioned on the same symmetry axis.
5. The tower monitoring system of claim 1, wherein the tower further comprises an upper beam disposed on the lower tower, a middle beam disposed on the middle tower, and a lower beam disposed on the upper tower;
the upper cross beam is provided with a fourth monitoring assembly, the middle cross beam is provided with a fifth monitoring assembly, and the lower cross beam is provided with a sixth monitoring assembly.
6. The tower column monitoring system of claim 5, wherein said lower beam is rectangular in horizontal cross section, said fourth monitoring assembly comprises a plurality of fourth total stations, one each located at a peripheral apex of said lower beam, and one each located at a central position of said lower beam and said lateral bridge-parallel side wall.
7. The tower column monitoring system according to claim 1, wherein a first mounting platform is provided on said middle beam, said first mounting platform is rectangular in cross section in the horizontal direction, said fifth monitoring assembly comprises a plurality of fifth total stations, one of said fifth total stations is provided at each of four vertices of said first mounting platform, and one of said fifth total stations is provided at each of middle positions of four side walls of said first mounting platform.
8. The tower column monitoring system according to claim 1, wherein a second mounting platform is provided on said upper beam, said second mounting platform being rectangular in cross-section in the horizontal direction, said sixth monitoring assembly comprises a plurality of sixth total stations, one each being provided at a central position of a peripheral side wall of said second mounting platform.
9. The tower column monitoring system according to claim 1, further comprising a plurality of temperature sensors, wherein the temperature sensors are disposed on the lower tower, the middle tower and the upper tower.
10. A tower monitoring method applied to the tower monitoring system according to any one of claims 1 to 9, the tower monitoring method comprising:
monitoring the space parameter information of a lower tower, a middle tower and an upper tower;
calculating the space parameter errors of the lower tower, the middle tower and the upper tower according to the parameter information;
judging whether the parameter error is greater than or equal to a preset error or not, and obtaining a corresponding judgment result;
and carrying out alarm prompt according to the judgment result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597054.0A CN113418514A (en) | 2021-05-28 | 2021-05-28 | Tower column monitoring system and tower column monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597054.0A CN113418514A (en) | 2021-05-28 | 2021-05-28 | Tower column monitoring system and tower column monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113418514A true CN113418514A (en) | 2021-09-21 |
Family
ID=77713344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110597054.0A Pending CN113418514A (en) | 2021-05-28 | 2021-05-28 | Tower column monitoring system and tower column monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113418514A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781879A (en) * | 2010-01-21 | 2010-07-21 | 中铁二十局集团有限公司 | Construction method of single-pylon cable-stayed bridge without dorsal cables |
| CN102251478A (en) * | 2011-04-27 | 2011-11-23 | 中铁港航局集团第二工程有限公司 | Control method for synchronous construction survey of pylons and beams of cable-stayed bridge |
| CN102322851A (en) * | 2011-09-14 | 2012-01-18 | 中铁四局集团第一工程有限公司 | Method for measuring second-grade river-crossing leveling height difference by using intelligent total station |
| CN105839536A (en) * | 2016-04-01 | 2016-08-10 | 中铁大桥局集团第五工程有限公司 | Construction method of cable-stayed bridge pylon |
| CN205804174U (en) * | 2016-06-30 | 2016-12-14 | 中铁第四勘察设计院集团有限公司 | A kind of bridge tower structure adapting to the parallel suspension cable in double rope faces |
| CN110042756A (en) * | 2019-04-03 | 2019-07-23 | 中铁大桥局集团有限公司 | Bridge high tower construction method and its construction equipment |
-
2021
- 2021-05-28 CN CN202110597054.0A patent/CN113418514A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781879A (en) * | 2010-01-21 | 2010-07-21 | 中铁二十局集团有限公司 | Construction method of single-pylon cable-stayed bridge without dorsal cables |
| CN102251478A (en) * | 2011-04-27 | 2011-11-23 | 中铁港航局集团第二工程有限公司 | Control method for synchronous construction survey of pylons and beams of cable-stayed bridge |
| CN102322851A (en) * | 2011-09-14 | 2012-01-18 | 中铁四局集团第一工程有限公司 | Method for measuring second-grade river-crossing leveling height difference by using intelligent total station |
| CN105839536A (en) * | 2016-04-01 | 2016-08-10 | 中铁大桥局集团第五工程有限公司 | Construction method of cable-stayed bridge pylon |
| CN205804174U (en) * | 2016-06-30 | 2016-12-14 | 中铁第四勘察设计院集团有限公司 | A kind of bridge tower structure adapting to the parallel suspension cable in double rope faces |
| CN110042756A (en) * | 2019-04-03 | 2019-07-23 | 中铁大桥局集团有限公司 | Bridge high tower construction method and its construction equipment |
Non-Patent Citations (1)
| Title |
|---|
| 宁安铁路有限责任公司: "《宁安铁路安庆长江大桥建造技术与工程管理》", 31 May 2015 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109763569B (en) | Construction method of cantilever awning | |
| CN111914458B (en) | Method for controlling line shape of arch ring of reinforced concrete arch bridge | |
| CN112320615B (en) | Installation method of wide cable crane | |
| CN115357965B (en) | Self-anchored suspension bridge and bridge forming line shape determining method thereof | |
| CN103266570A (en) | Method for accurately installing and positioning suspension bridge main cable anchor system | |
| CN115419277B (en) | Construction method of heavy steel box type diagonal column | |
| CN104100090A (en) | High-altitude comprehensive construction method of big-cantilever steel truss structure | |
| CN102914470B (en) | Device and method for testing concrete sample beam stiffness | |
| CN106223623A (en) | Steel construction box arched roof truss installation method | |
| CN116770980A (en) | Ultra-long variable-height V-shaped large-span steel structure corridor and construction method thereof | |
| CN107326812B (en) | Installation and positioning structure for No. 1 plate in No. 0 block of corrugated steel web bridge and operation method | |
| CN113418514A (en) | Tower column monitoring system and tower column monitoring method | |
| CN105423880A (en) | Method for suspending main cable to measure bridge deflection | |
| CN114837341B (en) | Zhang Xiandao triangular pipe truss steel roof supporting system | |
| CN111620223B (en) | Construction method for lifting net rack through secondary stress conversion of support | |
| CN115435990A (en) | Construction monitoring device, method and equipment for U-shaped beam of urban traffic engineering | |
| CN113533502B (en) | Long-term monitoring method for stud fatigue damage in rail transit combined structure bridge | |
| CN110672063B (en) | Deep bottom plate settlement monitoring device and installation method and monitoring method thereof | |
| US20240352688A1 (en) | Stiffening girder erection method of ground-anchored suspension bridge | |
| CN114703956B (en) | Double-layer large-span steel structure corridor construction process method | |
| CN118029270A (en) | Method for erecting stiffening girder of ground anchor type suspension bridge | |
| CN113605251B (en) | Arch bridge cable adjusting method | |
| CN117272689B (en) | Bridge girder side-turning risk assessment method, system and storage medium for bridge girder erection machine | |
| KR102652367B1 (en) | Method for structure deflection identification using strain sensor and artificial intelligence regression algorithm | |
| CN115406604A (en) | Steel box girder mid-span line shape and stress monitoring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210921 |