CN112176866A - Rectangular steel cable tower construction system and method for large-span asymmetric swivel cable-stayed bridge - Google Patents
Rectangular steel cable tower construction system and method for large-span asymmetric swivel cable-stayed bridge Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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Abstract
The invention relates to a rectangular steel cable tower construction system of a large-span asymmetric swivel cable-stayed bridge, which comprises: the system comprises a central processing terminal positioned in a rectangular steel cable tower construction command part, a plurality of mobile construction terminals positioned in hoisting and transporting equipment, and a plurality of construction safety detection terminals positioned in measurement early warning equipment; the central processing terminal is in wireless communication connection with the plurality of mobile construction terminals and the plurality of construction safety detection terminals respectively; the central processing terminal includes: the wireless signal transceiver is connected with the processor; the processor is respectively connected with the wireless signal transceiver, the alarm and the display; each mobile construction terminal can receive construction progress information sent by the central processing terminal. The construction system of the steel cable tower provided by the invention not only can scientifically and reasonably schedule and coordinate the construction progress of each project to achieve the purposes of high efficiency, energy saving and pollution-free production, but also can improve the construction precision and realize safe and reliable construction operation.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a rectangular steel cable tower construction system and method for a large-span asymmetric swivel cable-stayed bridge.
Background
With the development of bridge construction industry in China, super-high steel structure bridge engineering is more and more, the influence of environment and external factors is larger, and the construction difficulty is higher and higher.
In actual construction, the steel tower is of a single-tower steel box structure, and the steel tower is not filled with concrete inside, so that the steel tower is greatly influenced by external factors and deformed, the construction precision is required to be guaranteed, the construction progress is required to be guaranteed to reach the standard on time, and a set of safe and reliable construction scheduling system and a corresponding construction method are required.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a rectangular steel cable tower construction system and method for a large-span asymmetric swivel cable-stayed bridge.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the utility model provides a long-span asymmetric cable-stay bridge rectangle steel cable tower construction system that turns, includes: the system comprises a central processing terminal positioned in a rectangular steel cable tower construction command part, a plurality of mobile construction terminals positioned in hoisting and transporting equipment, and a plurality of construction safety detection terminals positioned in measurement early warning equipment;
the central processing terminal is in wireless communication connection with the plurality of mobile construction terminals and the plurality of construction safety detection terminals respectively;
the central processing terminal includes: the wireless signal transceiver is connected with the processor;
the processor is respectively connected with the wireless signal transceiver, the alarm and the display;
each mobile construction terminal can receive construction progress information sent by the central processing terminal and display the information to constructors located in the hoisting and transporting equipment so as to remind the project construction progress;
each construction safety detection terminal is arranged on the measurement early warning equipment, is in data connection with the measurement early warning equipment and is used for acquiring measurement data;
the construction safety detection terminal can send the measurement data to the central processing terminal.
Preferably, the processor is connected with the wireless signal transceiver, the alarm and the display respectively;
the processor comprises an information processing system used for processing the measurement data;
the information processing system can judge the construction progress according to the measurement data, and shares construction progress information to the mobile construction terminals and the display for displaying to constructors.
Preferably, the measurement and early warning device connected to the construction safety detection terminal at least comprises: the device comprises laser perpendicularity measuring equipment, total station auxiliary monitoring deformation equipment, measuring robot equipment, level gauge equipment and video monitoring equipment.
Preferably, the plurality of mobile construction terminals are intelligent terminals.
Preferably, the central processing terminal is connected with a mobile power supply or an alternating current power supply.
Preferably, the intelligent terminal includes: any one of a cell phone, a tablet, and a smart watch.
The technical scheme also provides a construction method of the rectangular steel cable tower of the large-span asymmetric swivel cable-stayed bridge, which comprises the following steps:
s1, pre-assembling the processed steel cable tower in a factory for the first time;
s2, carrying out quality detection on the first pre-assembled steel cable tower, and transporting the steel cable tower to a construction site in sections by means of a transport tool after the steel cable tower is qualified;
s3, transporting the steel cable tower to a construction site in sections for second pre-assembly, and performing second quality detection;
and S4, disassembling the steel cable tower qualified by the quality detection, and sequentially positioning and installing the tower sections from low to high to obtain the steel cable tower after the installation.
Preferably, the site foundation construction of the wire tower construction is performed simultaneously when the wire tower is processed in a factory.
Preferably, the step S4 further includes: detecting the installation precision in real time by using a measuring robot;
and numbering tower sections of the steel cable tower from low to high, and hoisting, detecting, adjusting and welding according to the numbers.
Preferably, the method further comprises: arranging a limiting plate at the interface of each tower segment;
during installation, the limiting plates are welded at the interface positions of the tower segments accurately to control the installation precision of the tower segments.
(III) advantageous effects
The invention has the beneficial effects that: the invention provides a rectangular steel cable tower construction system and method for a large-span asymmetric swivel cable-stayed bridge, which have the following beneficial effects:
1. the method not only can scientifically and reasonably schedule and coordinate the construction progress of each project to achieve the purposes of high-efficiency, energy-saving and pollution-free production, but also can improve the construction precision and realize safe and reliable construction operation.
2. The steel tower is processed and manufactured in a factory, and the steel tower processing and the site foundation construction are carried out synchronously, so that the construction period is saved.
3. The site construction has few large machines and is not limited by the surrounding space environment.
4. Because the steel tower is pre-assembled after being processed in a factory and transported to a construction site, the accuracy of hoisting the steel tower is ensured.
5. And the measuring robot is used for monitoring the deformation of the bridge tower, so that the high precision of the construction of the steel cable tower is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a rectangular steel cable tower construction system of a large-span asymmetric swivel cable-stayed bridge according to the present invention;
FIG. 2 is a process flow diagram of the construction method of a rectangular steel cable tower of a large-span asymmetric swivel cable-stayed bridge according to the present invention;
FIG. 3 is a schematic diagram of bridge tower segments and labels in a rectangular steel cable tower construction method for a large-span asymmetric swivel cable-stayed bridge provided by the invention;
FIG. 4 is a schematic diagram of a steel bridge tower lifting lug in the construction method of a rectangular steel cable tower of a large-span asymmetric swivel cable-stayed bridge provided by the invention;
FIG. 5 is a schematic diagram of the arrangement of detection points in the construction method of a rectangular steel cable tower of a large-span asymmetric swivel cable-stayed bridge according to the present invention;
FIG. 6 is a schematic diagram of the arrangement of detection points in the construction method of a rectangular steel cable tower of a large-span asymmetric swivel cable-stayed bridge according to the present invention;
FIG. 7 is a plan view of the construction layout of bridge tower hoisting in the construction method of rectangular steel cable towers of large-span asymmetric swivel cable-stayed bridges provided by the invention;
FIG. 8 is a plan view of the construction layout of the bridge tower T11 hoisting in the construction method of the rectangular steel cable tower of the large-span asymmetric swivel cable-stayed bridge provided by the invention;
fig. 9 is a schematic diagram of a section T11 of hoisting in the construction method of the rectangular steel cable tower of the large-span asymmetric swivel cable-stayed bridge provided by the invention;
fig. 10 is a schematic diagram of bridge tower installation and adjustment in the construction method of the rectangular steel cable tower of the large-span asymmetric swivel cable-stayed bridge provided by the invention.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1: the embodiment discloses a long-span asymmetric cable-stay bridge rectangle steel cable tower construction system that turns includes: the system comprises a central processing terminal located in a rectangular steel cable tower construction command part, a plurality of mobile construction terminals located in hoisting and transporting equipment, and a plurality of construction safety detection terminals located in measurement early warning equipment.
The central processing terminal is in wireless communication connection with the mobile construction terminals and the construction safety detection terminals respectively.
The central processing terminal includes: processor, wireless signal transceiver, siren, display.
It should be noted that: the central processor terminal can be arranged not only in the construction commanding part, but also in the headquarter area of the principle construction area in a networking mode and the like.
The processor is respectively connected with the wireless signal transceiver, the alarm and the display.
Each mobile construction terminal can receive the construction progress information sent by the central processing terminal and display the information to constructors located in the hoisting and transporting equipment so as to remind the project construction progress.
The construction progress information here includes: foundation construction, installation of the section I, and the like, and of course, other information and the like shared by the processors can be displayed, such as construction suggestions or commands sent by a command department.
Each construction safety detection terminal is arranged on the measurement early warning equipment, is in data connection with the measurement early warning equipment and is used for acquiring measurement data; the construction safety detection terminal can send the measurement data to the central processing terminal.
The measurement data at least comprises weather data, deformation data of components, accuracy data of installation equipment, video data of site construction multi-angle construction and the like.
In this embodiment, the processor is connected to the wireless signal transceiver, the alarm and the display, respectively.
The processor comprises an information processing system used for processing the measurement data; the information processing system can judge the construction progress according to the measurement data, and shares construction progress information to the mobile construction terminals and the display for displaying to constructors.
It should be noted that the display herein may also be a display device including an input function, such as a touch panel.
In this embodiment, the measurement and early warning device connected to the construction safety detection terminal at least includes: the device comprises laser perpendicularity measuring equipment, total station auxiliary monitoring deformation equipment, measuring robot equipment, level gauge equipment and video monitoring equipment.
In this embodiment, the plurality of mobile construction terminals are intelligent terminals.
In this embodiment, the central processing terminal is connected to a mobile power supply or an ac power supply.
In this embodiment, the intelligent terminal includes: any one of a cell phone, a tablet, and a smart watch.
It should be noted that: the intelligent terminal at least can meet the functions of receiving and displaying information.
As illustrated in fig. 2: the embodiment also provides a construction method of the rectangular steel cable tower of the large-span asymmetric swivel cable-stayed bridge, which comprises the following steps:
s1, pre-assembling the processed steel cable tower in a factory for the first time;
s2, carrying out quality detection on the first pre-assembled steel cable tower, and transporting the steel cable tower to a construction site in sections by means of a transport tool after the steel cable tower is qualified;
s3, transporting the steel cable tower to a construction site in sections for second pre-assembly, and performing second quality detection;
and S4, disassembling the steel cable tower qualified by the quality detection, and sequentially positioning and installing the tower sections from low to high to obtain the steel cable tower after the installation.
The construction method provided by the embodiment is suitable for mounting various large, medium and small bridge steel towers under high precision, and the structural form of the section of the steel tower can be sections in various forms.
In this embodiment, when the steel cable tower is processed in a factory, the site foundation construction of the steel cable tower construction is performed simultaneously. The steel cable tower is processed and manufactured in a factory, and the steel tower processing and the site foundation construction are carried out synchronously, so that the construction period is saved.
In this embodiment, the step S4 further includes: and detecting the installation precision in real time by adopting a measuring robot.
And numbering tower sections of the steel cable tower from low to high, and hoisting, detecting, adjusting and welding according to the numbers.
Finally, it should be noted that the method described in this embodiment further includes: arranging a limiting plate at the interface of each tower segment;
during installation, the limiting plates are welded at the interface positions of the tower segments accurately to control the installation precision of the tower segments.
Specifically, when the cable tower is processed and manufactured in a factory, the cable tower needs to be transported to the site after being pre-spliced, and a limiting device and a temporary fixing measure for the on-site installation of the cable tower block are well made. The steel cable tower is single tower steel case structure, because of inside no concrete filling, so receive external factor influence deformation great, for guaranteeing construction precision and construction progress, every side of every section rectangular steel cable tower takes a three-dimensional coordinate respectively to detect, the mounted position of every section of accurate control. The control of the installation accuracy of the steel tower is mainly completed through the limiting plates, during installation, the limiting plates are welded at the joint positions of the segments accurately, and after the steel cable tower segment is in place, the steel tower is finely adjusted through the jack, so that the installation accuracy of the steel cable tower is ensured. After each steel cable tower section is installed in place, three-dimensional coordinate values of points which are preset on the steel cable tower section are measured and compared with theoretical values, the installation accuracy of the steel cable tower is detected, the steel cable tower section is accurately adjusted, and section welding operation can be performed after accurate adjustment.
Specific examples
The construction method comprises the steps of compiling a special construction scheme for splicing the steel main tower, determining the construction work amount of the main tower, selecting a 500t crawler crane for the crane, selecting 6 steel wire ropes of 6 multiplied by 37 plus 1 for hoisting, selecting an arched shackle S-BX50t for a snap ring, and selecting a type B50t for a lifting lug, wherein the construction scheme can meet the hoisting work of the steel tower.
Number of main construction for assembling steel tower
The cable-stayed bridge comprises a main span, a side span, a bridge tower, a stay cable anchor cable and the like, and has a total length of 275 meters, wherein the main span is 155 meters long, the side span is 120 meters long, and the height of the bridge tower is 72.5 meters. The steel bridge tower is of a single-tower steel box structure, the distance between the bridge deck and the main tower is within 5.4m, the main tower is of an equal section, and the section size is 3.0 x 6.5 m; 9.0m above the bridge deck reaches the top of the tower, the main tower has an equal section, and the section size is 3.5m by 6.5 m; the section of the main tower is linearly changed from 5.4m to 9.0 m. The maximum hoisting weight of the segment is about 99.9 t. As shown in fig. 3: the bridge tower is divided into T1-T13 segments, and the specific data are as follows:
TABLE 1 bridge tower subsection and data sheet
In order to accelerate the construction progress and the quality requirement, the steel main tower is processed and manufactured in a factory, trial assembly work is completed in the factory, and transverse and longitudinal axis marks are made, so that the steel tower is positioned and detection points are arranged conveniently when the steel main tower is installed on site. And after the detection is qualified, the materials are transported to the site in sections according to the site requirements.
When the steel main tower segment is transported to leave a factory for loading, the steel main tower segment is flatly padded with a contact surface of a transport vehicle and firmly bound, and deformation in the transportation process is prevented. And (3) defining a route before transportation, selecting smooth road transportation, and making measures for specific obstacles along the way.
The transportation is carried out according to the requirement of site construction progress, the steel bridge tower approach time is selected when light is sufficient in the daytime so as to check the appearance quality of the steel tower sections, the technical strength of a carrier unit, vehicles and machines are checked, the approval of a traffic administration department is declared, the simulated transportation needs to be organized if necessary, and the specific transportation time is carried out according to the approval of a traffic administration department.
The actual distance of the project is 50 kilometers. Being equipped with 4 trailers of 130T, 4 transports of 20T trailer, the transport capacity can satisfy the site operation progress demand.
Because the dead weight of the steel bridge tower is large, the road jolts in the transportation process, and the damage rate of the steel bridge tower is high, the following cautions must be paid in the transportation process:
(1) in the transportation process, the steel member is stopped to check the stability and the fastening condition of the steel member every time the steel member travels a certain distance, and the steel member is timely treated when displacement, bundling and loosening of the anti-slip cushion blocks are found.
(2) The iron wires and steel wire ropes reinforced by the sealing machine must be ensured to be intact, and damaged iron wires and steel wire ropes are strictly forbidden to be bound.
(3) When the steel bridge tower is loaded and reinforced, the steel wire or the steel wire rope is used for fastening, and the form of the steel bridge tower is splayed, inverted splayed, crossed binding or pressed binding.
(4) The steel bridge tower is protected in the transportation process, and pollution and damage of the steel bridge tower in the transportation process are eliminated and avoided to the maximum extent.
(5) And before transportation, the steel bridge tower number is checked according to the list.
(6) When the steel bridge tower is transported horizontally, a 100 multiplied by 100 batten support pad must be placed at the bottom of the steel bridge tower, and the position of the pad block should ensure that the steel bridge tower is stressed reasonably.
(7) The vehicle needs to be slowly started, the vehicle runs at a constant speed, and overspeed, jerking and sudden braking are strictly prohibited.
And (3) after the steel tower segment is transported to the site, checking whether the steel tower segment is deformed or not so as to avoid influencing the construction progress and precision, and if the steel tower segment is deformed, returning to the factory immediately, revising the steel tower segment and then transporting the steel tower segment to the site. If the steel tower sections are not deformed, trial assembly is immediately carried out on the steel tower sections, the assembly condition is checked, and the steel tower sections are timely connected with the inside of a factory so as to avoid influencing the construction progress and precision.
As shown in fig. 4: to four hoist of steel tower segment, the lug is the interior preparation of scene with the pylon, and weld intact before dispatching from the factory, and single lug selects lug model B50t according to the lug standard can satisfy the construction requirement, and the hoisting point position is selected in pylon four corners department, treats that on-the-spot hoist segment welding accomplishes before carrying out next segment hoist, cuts the lug, does not influence next segment construction.
After the assembly is qualified, arranging a detection point, wherein the position of the detection point is shown in fig. 5 and 6:
and a measuring robot is adopted to detect the real-time three-dimensional space coordinates on site, and a total station is used for auxiliary measurement and is used for data summarization comparison and rechecking. Arranging engineering design pile crossing point positions and other detection point data, and arranging an actual bridge tower observation network datum point and a detection point approximate coordinate database in a measuring robot, wherein the concrete data are as follows:
TABLE 2 three-dimensional coordinates of detection points
The pile intersecting point plane coordinates are as follows: 1: X-41527370.9317Y-4633309.6367
2: the vertical Z coordinate of X41527369.7947Y 4633313.1498 changes with the hoisting of each section of bridge tower, and the height changes, and the specific numerical values are as follows:
TABLE 3 Observation points Z coordinate
| Point number | T1 | T2 | T3 | T4 | T5 | T6 |
| Z | 72.834 | 78.234 | 83.634 | 89.034 | 94.434 | 99.834 |
| T7 | T8 | T9 | T10 | T11 | T12 | T13 |
| 103.434 | 107.034 | 112.034 | 117.034 | 122.034 | 127.034 | 135.734 |
As shown in fig. 7-9: hoisting a steel bridge tower: the bridge tower T1-T4 is hoisted, a main arm of a 500T truck crane is selected from 90 meters, a counterweight 148T and an operation radius of 18-24 meters, the bridge tower T5-T13 is hoisted, a super-hoisting device is adopted, the length of the main arm is 72 meters, the length of an auxiliary arm is 48 meters, the counterweight 149T and the operation radius is 46 meters. When the main arm is adopted for hoisting, if the wind force is greater than 5 levels, the hoisting operation is not allowed. When the auxiliary arm is adopted for hoisting, the wind power cannot be greater than 4 levels.
As shown in fig. 10: in order to meet the hoisting requirement of the whole bridge tower, the station is set to meet the integral measurement requirement of the bridge tower, and a fixed point is arranged on the finished 22-25 continuous concrete beam close to the upper part of a 22 pier, and the distance between the fixed point and the main tower is about 125 m.
A construction three-dimensional space coordinate control network is established by using a measuring robot, the measuring robot is arranged on a fixed point position, an instrument is roughly leveled manually, after an operator starts the machine, a station and a rear view point are selected, then the operator roughly aims at the rear view point by an instrument telescope, observation work is started, the instrument automatically carries out multiple-detection-return angle measurement according to preset parameters and an observation sequence, and then multiple-measurement-is carried out on preset target distances according to the sequence, so that the purpose of detecting and installing precision by coordinate measurement is achieved.
Measuring four angular points around the main tower, calculating three-dimensional coordinates, calculating by using an automatic robot built-in program to obtain the deformation degree and the installation position of the main tower, and controlling the installation precision of the main tower segment.
The hoisting construction of the steel bridge tower is divided into 13 sections, the single section is hoisted integrally, and the construction sequence is from bottom to top. After the construction of the steel box girder is finished by J23-J25 sections (namely main pier sections), the first section (T1 section) of the steel bridge tower starts to be hoisted, the precision of the bridge tower is controlled by adopting the measures that a circle of ring lining is welded at the butt joint position of the sections, the bridge tower is adjusted by field installation, when the measured data is consistent with the theoretical data, the fine adjustment is stopped, the adjustment process is monitored in real time, and the lug plates are fixed by common bolts with the diameter of 24. In order to ensure the stability of the bridge tower welding process, after the adjustment precision of two adjacent bridge towers is butted, the bolts of the lug plates must be firmly screwed. And measuring again after the fixation is finished, and performing annular welding on the sections after the data are correct.
Measurement result statistics and analysis
Because of the rectangle steel main tower is the steel box structure, does not have concrete etc. to fill in, and its length and width reasons such as inconsistent cause it to receive external factors such as temperature, sunshine, weather to influence to warp great, so in whole steel main tower work progress, carry out all-weather real-time supervision to the bridge tower to guarantee to be accurate when each stage of installation. And taking the coordinates of each measuring point measured for the first time as an initial value, obtaining a new group of coordinate values every time of measurement, carrying out statistical comparison analysis on all the values, and taking the values as an overrun alarm according to preset parameters.
And analyzing the data in the last hoisting state to obtain the next section hoisting deviation, wherein the schematic diagram of each hoisting stage is shown below, the deformation monitoring is carried out in real time in the whole hoisting process, the error of each period is within a controllable range, and the hoisting work is efficiently and quickly completed.
The results are summarized as follows:
table 4 summary table of observation results of cable-stayed bridge tower in viaduct engineering
The main labor configurations are detailed in the table below.
TABLE 5 Main labor Allocation Table
Main machinery equipment
TABLE 6 mechanical equipment watch
| Serial number | Machine name | Model number | Unit of | Number of | Remarks for note |
| 1 | Crawler crane | 500T | Table (Ref. Table) | 1 | Main crane |
| 2 | Automobile crane | 50T | Table (Ref. Table) | 1 | Auxiliary crane |
| 3 | Automobile crane | 25T | Table (Ref. Table) | 1 | Auxiliary crane |
| 4 | Traction trailer | 120T | Vehicle with a motor | 4 | Transportation of |
| 6 | Trailer | 20T | Vehicle with a motor | 4 | Transportation of |
| 7 | Gas shielded welding machine | Table (Ref. Table) | 16 | Welding of | |
| 8 | Jack | YCW400B | Table (Ref. Table) | 4 | Fine tuning |
Table 7 test equipment table
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, which shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a large-span asymmetric cable-stay bridge rectangle steel cable tower construction system that turns which characterized in that includes: the system comprises a central processing terminal positioned in a rectangular steel cable tower construction command part, a plurality of mobile construction terminals positioned in hoisting and transporting equipment, and a plurality of construction safety detection terminals positioned in measurement early warning equipment;
the central processing terminal is in wireless communication connection with the plurality of mobile construction terminals and the plurality of construction safety detection terminals respectively;
the central processing terminal includes: the wireless signal transceiver is connected with the processor;
the processor is respectively connected with the wireless signal transceiver, the alarm and the display;
each mobile construction terminal can receive construction progress information sent by the central processing terminal and display the information to constructors located in the hoisting and transporting equipment so as to remind the project construction progress;
each construction safety detection terminal is arranged on the measurement early warning equipment, is in data connection with the measurement early warning equipment and is used for acquiring measurement data;
the construction safety detection terminal can send the measurement data to the central processing terminal.
2. The construction system of claim 1,
the processor is respectively connected with the wireless signal transceiver, the alarm and the display;
the processor comprises an information processing system used for processing the measurement data;
the information processing system can judge the construction progress according to the measurement data, and shares construction progress information to the mobile construction terminals and the display for displaying to constructors.
3. The construction system of claim 2,
the measurement early warning equipment that construction safety inspection terminal connects includes at least: the device comprises laser perpendicularity measuring equipment, total station auxiliary monitoring deformation equipment, measuring robot equipment, level gauge equipment and video monitoring equipment.
4. The construction system of claim 3, wherein the plurality of mobile construction terminals are intelligent terminals.
5. The construction system according to claim 4, wherein a mobile power supply or an alternating current power supply is connected to the central processing terminal.
6. The construction system of claim 5,
the intelligent terminal comprises: any one of a cell phone, a tablet, and a smart watch.
7. A construction method of a rectangular steel cable tower of a large-span asymmetric swivel cable-stayed bridge is characterized by comprising the following steps:
s1, pre-assembling the processed steel cable tower in a factory for the first time;
s2, carrying out quality detection on the first pre-assembled steel cable tower, and transporting the steel cable tower to a construction site in sections by means of a transport tool after the steel cable tower is qualified;
s3, transporting the steel cable tower to a construction site in sections for second pre-assembly, and performing second quality detection;
and S4, disassembling the steel cable tower qualified by the quality detection, and sequentially positioning and installing the tower sections from low to high to obtain the steel cable tower after the installation.
8. The method of claim 7, wherein the site foundation construction of the pylon is performed simultaneously with the factory processing of the pylon.
9. The method of constructing a wire tower according to claim 7,
the step S4 further includes: detecting the installation precision in real time by using a measuring robot;
and numbering tower sections of the steel cable tower from low to high, and hoisting, detecting, adjusting and welding according to the numbers.
10. The method of constructing a wire tower according to claim 7, further comprising: arranging a limiting plate at the interface of each tower segment;
during installation, the limiting plates are welded at the interface positions of the tower segments accurately to control the installation precision of the tower segments.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445433A (en) * | 2021-08-13 | 2021-09-28 | 北京城建集团有限责任公司 | Bridge tower construction method |
| CN114108475A (en) * | 2021-11-26 | 2022-03-01 | 中电建路桥集团有限公司 | Cable-stayed bridge tower beam mounting structure and space ex-situ interaction construction method thereof |
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