CN111560860A - Construction method for measuring segmental prefabricated spliced single tower - Google Patents
Construction method for measuring segmental prefabricated spliced single tower Download PDFInfo
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- CN111560860A CN111560860A CN202010288191.1A CN202010288191A CN111560860A CN 111560860 A CN111560860 A CN 111560860A CN 202010288191 A CN202010288191 A CN 202010288191A CN 111560860 A CN111560860 A CN 111560860A
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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
- E01D21/10—Cantilevered erection
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- General Physics & Mathematics (AREA)
- Architecture (AREA)
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- Length Measuring Devices By Optical Means (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method for measuring a segmental prefabrication and splicing single tower, which belongs to the technical field of single tower measurement and comprises the following steps: firstly, installing guide rails at two ends of a single-tower pier, then installing a pair of arc-shaped electric slide rails between a pair of slide blocks, and connecting the slide blocks with a winch by using a traction rope; when the single-tower pier is detected, a winch on a guide rail is controlled to work to drive a sliding block to slide along the guide rail, so that an arc-shaped electric sliding rail runs to the middle part of the prefabricated column, the average outer diameter of each prefabricated column and the actual wind pressure value at the height of the middle section are measured by a plurality of detection devices on a sliding table, and then the distributed load borne by the prefabricated columns is calculated by technicians; and finally, the displacement and the internal force are calculated by adopting a force method and a superposition principle, so that the segment prefabricated spliced single tower can be conveniently measured for many times, and the prefabricated segment of the spliced single tower can be conveniently measured in a targeted manner.
Description
Technical Field
The invention relates to the technical field of single tower measurement, in particular to a construction method for measuring a segmental prefabrication splicing single tower.
Background
The segment prefabrication and assembly is mainly evolved from a field prefabrication cantilever process, and the field prefabrication cantilever process is limited by field construction complexity, difficult quality control and the like, so that the process for prefabricating and assembling the segments of the simply supported beam is derived. With the rapid development of modern city construction, traffic problems are increasingly prominent, and urban road traffic needs to develop urban elevated roads and rail traffic. The urban development requires beautiful modeling, high appearance quality, small influence of concrete creep and small influence of construction on surrounding environment and ground on viaducts and rail transit. The equipment and the construction technology which meet the construction requirements are one of the equipment and the construction technology, and the segmental prefabrication and assembly are one of the equipment and the construction technology, so that the process is economical and efficient, and becomes a systematic construction mode.
The principle of segment prefabrication, assembly and construction is that a bridge structure is divided into a plurality of standard segments, after matched prefabrication is completed in a prefabrication site, special assembling equipment such as a bridge girder erection machine is used on the bridge substructure on site, the standard segments are assembled one by one in sequence, prestress is applied at the same time, the bridge substructure becomes an integral structure, and span-by-span propulsion and span-by-span assembly are carried out along a preset installation direction.
After the segment prefabrication and assembly construction of the bridge pier, the single-tower measurement is needed to be carried out on the bridge pier to calculate the distributed load borne by the single-tower bridge pier formed by segment prefabrication and assembly, so that the performance of the bridge pier is analyzed.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a construction method for measuring a segment prefabricated spliced single tower, which can conveniently measure the segment prefabricated spliced single tower for multiple times and conveniently measure each prefabricated segment of the spliced single tower in a targeted manner.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A construction method for measuring a segmental prefabrication splicing single tower comprises the following steps: the construction method for single tower measurement comprises the following steps:
s1, before single-tower measurement, installing guide rails at two ends of a single-tower pier, fixing the guide rails with the ground by using ground nails, then installing a pair of arc-shaped electric slide rails between a pair of slide blocks, and connecting the slide blocks with a winch by using a traction rope;
s2, when detecting the single-tower pier, the winch on the guide rail is controlled to work, the sliding block slides along the length direction of the guide rail under the traction action of the traction rope, the arc-shaped electric sliding rail runs to the middle part of the prefabricated column, the actual wind pressure value born by the position is detected by the wind pressure detection module, and when the sliding block moves on the prefabricated column, the average outer diameter value of the prefabricated column is detected by the laser ranging sensor;
s3, calculating the distribution load of each prefabricated column by technicians after measuring the average outer diameter of each prefabricated column and the actual wind pressure value at the height of the middle section;
and S4, finally, technicians can calculate the displacement and the internal force by adopting a force method and a superposition principle, check the horizontal displacement of the tower top and the maximum normal stress of the tower bottom, and finish the measurement work of the single tower after repeating the steps for multiple times.
A construction method for measuring a segment prefabricating and splicing single tower comprises a single tower measuring device and a single tower pier, wherein the single tower pier comprises a base, a prefabricating column is fixedly connected to the base, a plurality of prefabricated segments are spliced on the prefabricating column, the single tower measuring device comprises guide rails installed at two ends of the single tower pier, a bottom plate and a top plate are respectively connected to the upper end and the lower end of each guide rail, a winch is fixedly connected to the bottom plate, a pulley is rotatably connected to the top plate, a sliding block is connected to the guide rails in a sliding mode, a displacement sensor is fixedly connected to the inside of the sliding block, a traction rope is connected between the sliding block and the winch and wound on the pulleys, a pair of arc-shaped electric sliding rails is connected between the sliding blocks, a sliding table is connected to the arc-shaped electric sliding rails in a sliding mode, and a laser ranging sensor and an image, fixedly connected with wind pressure detection module on the slip table can realize conveniently carrying out a lot of measurements to the prefabricated concatenation single tower of segment, conveniently carries out the pertinence to each prefabricated segment of concatenation back single tower and measures.
Furthermore, the haulage rope is the nylon rope, the cladding has waterproof rubber layer on the nylon rope, easily improves the intensity of haulage rope, prevents the haulage rope fracture.
Furthermore, the guide rail comprises a plurality of C shaped steel roof beams concatenation, and is adjacent two be connected with the tie-beam between the C shaped steel roof beam, all be connected with the locking bolt between tie-beam and two C shaped steel roof beams, it is a plurality of be connected with the reinforcement post between the tie-beam, the inner wall upper berth of C shaped steel is equipped with the damping layer, and the guide rail that constitutes is spliced by a plurality of C shaped steel roof beams constitutes the guide rail through a plurality of C shaped steel roof beams concatenation, makes the adaptable not single tower pier measurement of co-altitude of guide rail work, consolidates through the reinforcement post between two adjacent C shaped steel roof beams, guarantees the holistic intensity of guide rail.
Furthermore, a plurality of ground nails are connected between the bottom plate and the ground, and a pair of reinforcing ribs are connected between the bottom plate and the guide rail, so that the bottom plate and the guide rail are not easy to bend.
Further, two-way electric putter of fixedly connected with in the slider, the equal fixedly connected with in both ends and guide rail assorted brake block, make the slider through brake block and guide rail locking, can stop at appointed height when making the slider measure prefabricated segment, take place to rock when preventing the slip table motion, guarantee measured data's accuracy.
Furthermore, the upper end and the lower end of the sliding block are fixedly connected with idler wheels matched with the guide rails, so that the sliding of the sliding block on the guide rails is facilitated.
The construction method comprises a single-tower measuring system, wherein the single-tower measuring system comprises a processor, a wireless data transmission module is installed in a sliding block, a laser ranging sensor, a wind pressure detection module and a displacement sensor are all electrically connected with the wireless data transmission module, and the processor is in signal connection with the wireless data transmission module, so that the single-tower measuring work can be conveniently and remotely controlled.
Furthermore, a displacement sensor is installed in the sliding block and is in signal connection with the processor, so that the lifting height of the sliding block can be recorded conveniently, and technicians can drive the sliding block to an appointed height through the winch conveniently.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can realize through installing the guide rail on the single tower pier that awaits measuring, pull the slider and slide in the guide rail through hoist engine and haulage rope, make the electric slide rail of arc of installing between a pair of slider remove to different prefabricated segment departments, through the motion of the electric slide rail drive slip table of arc, make the slip table detect the wind pressure that the actual radius and the actual mounted position of prefabricated segment bore, the multiple repetition test work's of single tower pier when making things convenient for the concatenation of prefabricated segment to constitute goes on when carrying out single tower measurement many times, through multiple repetition test in order to guarantee measured data retentivity, guarantee the accuracy of test result.
(2) This scheme makes laser rangefinder sensor and wind pressure detection module can measure at each height and arbitrary circumference position on single tower pier through the lift of single tower measurement system control slider and the motion of slip table, easily carries out comprehensive measurement and a lot of to single tower pier.
(3) According to the scheme, the pair of arc-shaped electric sliding rails are installed between the pair of sliding blocks, the arc-shaped electric sliding rails can be detached and replaced by driving the sliding table sliding on the pair of arc-shaped electric sliding rails to move, and the device is suitable for measuring prefabricated sections of different sizes by installing the arc-shaped electric sliding rails of different sizes.
Drawings
FIG. 1 is a perspective view of a single tower measuring device of the present invention;
FIG. 2 is a top view of a single tower measuring device of the present invention;
FIG. 3 is a cross-sectional view of a single tower measuring device of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a cross-sectional view of a single tower measuring device slide of the present invention;
fig. 6 is a schematic circuit diagram of the present invention.
The device comprises a single-tower pier 1, a base 101, prefabricated columns 102, prefabricated sections 103, guide rails 2, a bottom plate 201, a top plate 202, a sliding block 3, a bidirectional electric push rod 301, a brake pad 302, an arc electric sliding rail 4, a sliding table 5, a laser ranging sensor 6, a wind pressure detection module 7, a winch 8, a traction rope 9, a pulley 10, a processor 11 and a wireless data transmission module 12.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1: referring to fig. 1-6, a construction method for measuring a segment prefabricated spliced single tower comprises the following steps: the construction method for single tower measurement comprises the following steps:
s1, before single-tower measurement, installing guide rails 2 at two ends of a single-tower pier 1, fixing the guide rails 2 with the ground by using ground nails, then installing a pair of arc-shaped electric slide rails 4 between a pair of slide blocks 3, and connecting the slide blocks 3 with a winch by using a traction rope 9;
s2, when detecting the single-tower pier 1, the winch 8 on the guide rail 2 is controlled to work, the sliding block 3 slides along the length direction of the guide rail 2 under the traction action of the traction rope 9, the arc-shaped electric sliding rail 4 runs to the middle of the precast column 102, the actual wind pressure value borne by the position is detected by the wind pressure detection module 7, and when the sliding block 3 moves on the precast column 102, the average outer diameter value of the precast column 102 is detected by the laser ranging sensor 6;
s3, calculating the distribution load of each prefabricated column 102 by technicians after measuring the average outer diameter of each prefabricated column 102 and the actual wind pressure value at the height of the middle section;
and S4, finally, technicians can calculate the displacement and the internal force by adopting a force method and a superposition principle, check the horizontal displacement of the tower top and the maximum normal stress of the tower bottom, and finish the measurement work of the single tower after repeating the steps for multiple times.
A construction method for measuring a single tower by segment prefabrication and splicing comprises a single tower measuring device and a single tower pier 1, wherein the single tower pier 1 comprises a base 101, a prefabrication column 102 is fixedly connected to the base 101, a plurality of prefabricated segments 103 are spliced on the prefabrication column 102, and the single tower measuring device comprises guide rails 2 arranged at two ends of the single tower pier 1;
referring to fig. 1-4, the upper and lower ends of a guide rail 2 are respectively connected with a bottom plate 201 and a top plate 202, the bottom plate 201 is fixedly connected with a winch 8, the top plate 202 is rotatably connected with a pulley 10, the guide rail 2 is slidably connected with a slider 3, a displacement sensor is fixedly connected in the slider 3, a plurality of ground nails are connected between the bottom plate 201 and the ground, a pair of reinforcing ribs are connected between the bottom plate 201 and the guide rail 2, so that the bottom plate 201 and the guide rail 2 are not easily bent, the guide rail 2 is formed by splicing a plurality of C-shaped steel beams, a connecting beam is connected between two adjacent C-shaped steel beams, a locking bolt is connected between the connecting beam and the two C-shaped steel beams, a reinforcing column is connected between the connecting beams, a damping layer is laid on the inner wall of the C-shaped steel, the guide rail 2 formed by splicing a plurality of C-shaped steel beams, the guide rail 2 is formed, and the two adjacent C-shaped steel beams are reinforced through reinforcing columns, so that the overall strength of the guide rail 2 is ensured.
Please refer to fig. 1-3 and be connected with haulage rope 9 between slider 3 and the hoist engine 8, and haulage rope 9 twines on pulley 10, be connected with the electronic slide rail 4 of a pair of arc between a pair of slider 3, sliding connection has slip table 5 on the electronic slide rail 4 of arc, the upper end fixedly connected with laser ranging sensor 6 and the image acquisition module of slip table 5, fixedly connected with wind pressure detection module 7 on the slip table 5, haulage rope 9 is the nylon rope, the cladding has waterproof rubber layer on the nylon rope, easily improves the intensity of haulage rope 9, prevent haulage rope 9 fracture.
Referring to fig. 1-2, in the scheme, a pair of arc-shaped electric slide rails 4 are arranged between a pair of slide blocks, and the arc-shaped electric slide rails 4 can be detached and replaced by driving the slide tables 5 sliding on the pair of arc-shaped electric slide rails 4 to move, so that the device adapts to the measurement of prefabricated sections with different sizes by arranging the arc-shaped electric slide rails 4 with different sizes;
referring to fig. 5, two ends of a bidirectional electric push rod 301 and 301 fixedly connected to the inside of the slider 3 are both fixedly connected to brake pads 302 matched with the guide rail 2, so that the slider 3 is locked to the guide rail 2 through the brake pads 302, the slider 3 can be parked at a specified height when measuring the prefabricated section 103, and the slider 3 is locked to the guide rail 2 and fixed, so that the arc-shaped electric slide rail 4 is kept stable, thereby preventing the sliding table 5 from shaking during movement and ensuring the accuracy of measured data.
Please refer to fig. 6, a construction method for measuring a segment prefabricated spliced single tower comprises a single tower measuring system, the single tower measuring system comprises a processor 11, a wireless data transmission module 12 is installed in a sliding block 3, a laser ranging sensor 6, a wind pressure detection module 7 and a displacement sensor are electrically connected with the wireless data transmission module 12, the processor 11 is in signal connection with the wireless data transmission module 12, which facilitates the remote control of the single tower measuring work, the displacement sensor is installed in the sliding block 3, the displacement sensor is in signal connection with the processor 11, which facilitates the recording of the rising height of the sliding block 3, and a technician can drive the sliding block 3 to a designated height through a winch.
According to the scheme, the single-tower measuring system controls the lifting of the sliding block 3 and the movement of the sliding table 5, so that the laser ranging sensor 6 and the wind pressure detection module 7 can measure the heights and the circumferential positions of the single-tower pier 1 at random, and the single-tower pier 1 can be measured comprehensively and repeatedly.
This scheme is through installing guide rail 2 on the single tower bridge 1 that awaits measuring, pull slider 3 through hoist engine 8 and haulage rope 9 and slide in guide rail 2, make the electric slide rail 4 of arc of installing between a pair of slider 3 remove to different prefabricated segment 103 departments, through the motion of the electric slide rail 4 drive slip table 3 of arc, make slip table 5 detect the wind pressure that the actual radius of prefabricated segment 103 and actual mounted position bore, make things convenient for going on of the many times repetition test work when single tower pier 1 that prefabricated segment 103 spliced the constitution carries out single tower measurement, through many times repetition test in order to guarantee measured data retentivity, guarantee the accuracy of testing result.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (9)
1. A construction method for measuring a segmental prefabrication splicing single tower is characterized by comprising the following steps: the construction method for single tower measurement comprises the following steps:
s1, before single-tower measurement, installing guide rails (2) at two ends of a single-tower pier (1), fixing the guide rails (2) with the ground by using ground nails, then installing a pair of arc-shaped electric slide rails (4) between a pair of slide blocks (3), and connecting the slide blocks (3) with a winch by using a traction rope (9);
s2, when detecting a single-tower pier (1), controlling a winch (8) on a guide rail (2) to work, enabling a sliding block (3) to slide along the length direction of the guide rail (2) under the traction effect of a traction rope (9), enabling an arc-shaped electric sliding rail (4) to run to the middle part of a prefabricated column (102), detecting an actual wind pressure value born by the position through a wind pressure detection module (7), and detecting an average outer diameter value of the prefabricated column (102) through a laser ranging sensor (6) when the sliding block (3) moves on the prefabricated column (102);
s3, calculating the distribution load of each prefabricated column (102) by technicians after measuring the average outer diameter of each prefabricated column (102) and the actual wind pressure value at the height of the middle section;
and S4, finally, technicians can calculate the displacement and the internal force by adopting a force method and a superposition principle, check the horizontal displacement of the tower top and the maximum normal stress of the tower bottom, and finish the measurement work of the single tower after repeating the steps for multiple times.
2. The construction method for measuring the segment prefabrication and splicing single tower comprises a single tower measuring device and a single tower pier (1), wherein the single tower pier (1) comprises a base (101), a prefabrication column (102) is fixedly connected to the base (101), a plurality of prefabricated segments (103) are spliced on the prefabrication column (102), and the construction method is characterized in that: the single-tower measuring device comprises guide rails (2) arranged at two ends of a single-tower pier (1), the upper end and the lower end of each guide rail (2) are respectively connected with a bottom plate (201) and a top plate (202), a winch (8) is fixedly connected onto the bottom plate (201), a pulley (10) is rotatably connected onto the top plate (202), a sliding block (3) is slidably connected onto each guide rail (2), a displacement sensor is fixedly connected into each sliding block (3), a traction rope (9) is connected between each sliding block (3) and the winch (8), each traction rope (9) is wound on each pulley (10), a pair of arc-shaped electric sliding rails (4) is connected between each pair of sliding blocks (3), each arc-shaped electric sliding rail (4) is slidably connected with a sliding table (5), and the upper end of each sliding table (5) is fixedly connected with a laser ranging sensor (6) and an image acquisition module, fixedly connected with wind pressure detection module (7) on slip table (5).
3. The construction method for measuring the segmental prefabrication splicing single tower according to claim 1 or 2, wherein the construction method comprises the following steps: the hauling rope (9) is a nylon rope, and a waterproof rubber layer is coated on the nylon rope.
4. The construction method for measuring the segmental prefabrication and splicing single tower according to claim 1 or 2, wherein the guide rail (2) is formed by splicing a plurality of C-shaped steel beams, a connecting beam is connected between every two adjacent C-shaped steel beams, locking bolts are connected between the connecting beam and the two C-shaped steel beams, reinforcing columns are connected between the connecting beams, and damping layers are paved on the inner walls of the C-shaped steel beams.
5. The construction method for measuring the segmental prefabrication splicing single tower according to claim 2, wherein the construction method comprises the following steps: a plurality of ground nails are connected between the bottom plate (201) and the ground, and a pair of reinforcing ribs are connected between the bottom plate (201) and the guide rail (2).
6. The construction method for measuring the segmental prefabrication splicing single tower according to claim 2, wherein the construction method comprises the following steps: the bidirectional electric push rod (301) is fixedly connected in the sliding block (3), and the brake pads (302) matched with the guide rails (2) are fixedly connected to the two ends of the bidirectional electric push rod (301).
7. The construction method for measuring the segmental prefabrication splicing single tower according to claim 2, wherein the construction method comprises the following steps: the upper end and the lower end of the sliding block (3) are fixedly connected with idler wheels matched with the guide rail (3).
8. The construction method for measuring the segmental prefabrication splicing single tower according to claim 2, wherein the construction method comprises the following steps: including a single tower measurement system, single tower measurement system includes treater (11), install wireless data transmission module (12) in slider (3), laser ranging sensor (6), wind pressure detection module (7) and displacement sensor all with wireless data transmission module (12) electric connection, treater (11) and wireless data transmission module (12) signal connection.
9. The construction method for measuring the segmental prefabrication splicing single tower according to claim 1 or 8, wherein the construction method comprises the following steps: and a displacement sensor is arranged in the sliding block (3) and is in signal connection with the processor (11).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113699901A (en) * | 2021-09-28 | 2021-11-26 | 江西省交通运输科学研究院有限公司 | Pier inspection device |
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