CN108519782B - Automatic control system for prefabricated line shape of segmental bridge - Google Patents
Automatic control system for prefabricated line shape of segmental bridge Download PDFInfo
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- CN108519782B CN108519782B CN201810300250.5A CN201810300250A CN108519782B CN 108519782 B CN108519782 B CN 108519782B CN 201810300250 A CN201810300250 A CN 201810300250A CN 108519782 B CN108519782 B CN 108519782B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
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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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Abstract
The invention provides an automatic control system for a prefabricated line shape of a segmental bridge, and belongs to the technical field of prefabricated construction of segmental bridges. The method solves the problems of low measurement speed and low automation degree of the traditional construction method adopting manual operation. The automatic adjusting device is used for controlling a forming module consisting of an end die, a pouring area and a matching area, a matching section is arranged in the matching area of the forming module, and the pouring section is formed in the pouring area. The invention can realize automatic lofting and automatic adjustment, and has the advantages of high measurement precision, high automation degree, high production efficiency and the like.
Description
Technical Field
The invention belongs to the technical field of segmental bridge prefabrication construction, and relates to an automatic control system for segmental bridge prefabrication line shapes.
Background
The prefabricated site of the segmental construction bridge is often located near the bridge site, the geological condition is poor, and the displacement of the measuring reference tower is easy to occur, so that the accuracy of the segmental construction matching of the short-line method is influenced. Therefore, a measuring method for fixing the measuring tower and the end mould is provided, six measuring point components are arranged in a lofting stage, and the relative positions of the current segment and the matched segment are determined by measuring the distance and the angle between the measuring point components. Because the geological conditions of the prefabricated site are generally poor, the reference tower and the target tower are usually displaced to a certain extent in the construction period. Meanwhile, the time consumed for the deviation checking of the reference tower and the target tower is long, so that the reference tower and the target tower cannot be checked before each section is constructed in the practical engineering application, and the checking is performed once a month in general. In this month of construction period, the deviation of the reference tower from the target tower is unknown. Therefore, when the horizontal position is determined by adopting the traditional construction method, the measurement error of the horizontal relative position of each section can be caused due to the change of the theoretical central line, and the error is rapidly increased along with the increase of the pouring circulation, so that the deviation of the central axis of the bridge exceeds the allowable value range. In addition, the external reference tower is greatly influenced by external environments such as weather, temperature, wind power, environmental vibration and the like, and the accuracy of the prefabrication construction of the segmental bridge is adversely affected.
And the traditional section bridge lofting adopts manual lofting, and the position of the matching section needs to be checked and adjusted repeatedly according to the measurement data of the total station until the lofting error requirement is met. The automation degree of the process is low, the lofting measurement program, the matching section position adjustment program and the lofting precision check have long consumption time, and are easily influenced by the operation of measuring personnel, and the production efficiency needs to be further improved. In addition, the linear adjustment method of the segmental bridge is mostly completed by adopting foreign industry software, lofting data and retest data of each segment need to be manually input into the software, and lofting data of the next segment is calculated through the software, so that the process is complex and tedious.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an automatic control system for a prefabricated line shape of a segmental bridge, which can automatically set out and adjust.
The purpose of the invention can be realized by the following technical scheme:
the automatic control system for the prefabricated line shape of the segmental bridge is used for controlling a forming module consisting of an end die, a pouring area and a matching area, the matching area of the forming module is provided with a matching segment, and the pouring area is used for forming the pouring segment.
In the automatic control system for the prefabricated line shape of the segmental bridge, the central control unit comprises a data processing module, an error adjusting and calculating module, an automatic adjusting module and a data processing and post-processing module. The automatic adjusting unit is a plurality of jacks arranged below the matching sections or other devices capable of changing the longitudinal positions of the matching sections, and the longitudinal positions of the matching sections are changed by controlling the extension and retraction of the jacks through the automatic adjusting module. Meanwhile, the jack can be installed on the movable vehicle body, and the position of the jack can be changed transversely to change the transverse position of the matched section.
In the automatic control system for the prefabricated line shape of the segmental bridge, the automatic measuring and setting unit comprises a high-precision automatic measuring robot fixed on the end mould, a plurality of measuring points I arranged on the matched segments and a plurality of measuring points II arranged on the pouring segments.
The automatic control system has the following stages: 1. a lofting stage; 2. a matching stage; 3. a pouring stage; 4. and (5) a return test stage. The function of the data processing module comprises that X, Y, Z coordinate values of each measuring point are calculated through the measured distance and angle of the measuring point I or the measuring point II in the lofting stage and the return measuring stage; the error adjustment calculation module is used for calculating the actual relative position of the matched segment after the completion of pouring and the current pouring segment according to the coordinate values of the measuring points in the retest stage, and comparing the actual relative position with the theoretical relative position to obtain an adjustment amount for lofting construction of the next segment; the automatic adjusting module is used for calculating the amount of adjustment of each hydraulic jack according to X, Y, Z coordinate values output by the measurement data processing module in the lofting stage and sending instructions to the automatic adjusting unit so as to control the automatic adjusting unit; the data recording and post-processing module is used for recording the theoretical position of each segment and the actual position record in the lofting stage and the back measurement stage, and is used for post-processing data.
In the automatic control system for the prefabricated line shape of the segmental bridge, in the lofting stage, the measurement data of the automatic measuring and setting unit is input into the data processing module and the data recording and post-processing module, and the calculation data of the automatic adjusting module is fed back to the automatic measuring and setting unit; in the back measurement stage, the measurement data of the automatic measurement and setting unit is input into the data processing module and the data recording and post-processing module, and the calculation data of the error adjustment calculation module is fed back to the automatic measurement and setting unit in the next casting cycle lofting stage.
In the above automatic control system for the prefabricated line shape of the segmental bridge, the end mould is rigidly connected with a measuring platform, and the high-precision automatic measuring robot is arranged on the measuring platform. The measuring platform is connected with the end die steel, so that the stability is good, the measuring base point and the end die of the high-precision automatic measuring robot can not generate relative displacement, and the segment linear error is reduced.
In the prefabricated linear automatic control system for the segmental bridge, the first measuring points are 6 measuring points which are arranged on the upper surface of the matched segment, the number of the second measuring points is equal to that of the first measuring points and are arranged on the upper surface of the pouring segment, and the first measuring points and the second measuring points are arranged in one-to-one correspondence.
In the prefabricated linear automatic control system for the segmental bridge, three measuring point members I which are uniformly distributed are fixed on one side of a matched segment close to an end die, a plurality of measuring point members II which are equal in number to the measuring point members I and are arranged in a one-to-one correspondence manner are fixed on one side of the matched segment away from the end die, the measuring point members I are L-shaped, the outer surfaces of vertical plates of the measuring point members I are flush with the side surfaces of the matched segment, the upper surfaces of horizontal plates of the measuring point members I are flush with the upper surfaces of the matched segment, and a measuring point I is arranged on a horizontal plate of each measuring point member I; the measuring point component II is L-shaped, the outer surface of the vertical plate of the measuring point component II is flush with the other side surface of the matching section, the upper surface of the horizontal plate of the measuring point component II is flush with the upper surface of the matching section, and a measuring point I is arranged on the horizontal plate of each measuring point component II.
In the prefabricated linear automatic control system for the segmental bridge, a plurality of measuring point members III which correspond to the measuring point members I one to one are fixed on the end die through a fixing structure I, the measuring point members III are L-shaped, the outer surfaces of vertical plates of the measuring point members III are flush with the side surfaces of the end die, the upper surfaces of horizontal plates of the measuring point members III are flush with the upper surface of the end die, and a measuring point II is arranged on each horizontal plate of each measuring point member III.
In the prefabricated linear automatic control system for the segmental bridge, the first fixing structure comprises a rotary cover plate hinged to the upper surface of the end mould through a roll shaft, two bolt holes I and two bolts I, wherein the bolt holes I and the bolt holes I are formed in a horizontal plate of the third measuring point member, the bolt holes I and the bolt holes I are in threaded connection, and the second measuring point on the third measuring point member is located at the middle point of the connecting line of the two bolt holes I.
In the prefabricated linear automatic control system for the segmental bridge, a plurality of measuring point members IV which correspond to the measuring point members III one to one are fixed on the matched segments through fixing structures II, the measuring point members IV are L-shaped, the outer surfaces of the vertical plates of the measuring point members IV are attached to the outer surfaces of the vertical plates of the measuring point members I, the upper surfaces of the horizontal plates of the measuring point members IV are flush with the upper surfaces of the horizontal plates of the measuring point members I, and a measuring point II is arranged on the horizontal plate of each measuring point member IV.
In the automatic control system for the prefabricated line shape of the segmental bridge, the second fixing structure comprises a matching cover plate fixed on a horizontal plate of the first measuring point component through a second bolt, a third bolt hole and a third bolt hole, wherein the third bolt hole and the third bolt hole are formed in the horizontal plate of the fourth measuring point component; the horizontal plate of the first measuring point component is provided with two bolt holes II, the bolts II are in threaded connection with the bolt holes II correspondingly arranged, and the first measuring point on the horizontal plate of the first measuring point component is positioned at the middle point of the connecting line of the two bolt holes II.
In the above-mentioned automatic control system for the prefabricated line shape of the segmental bridge, a first protective cover is covered on the lower part of the first bolt, and a second protective cover is covered on the lower part of the third bolt. The protection cover I and the protection cover II can be prevented from being adhered after concrete pouring.
The first measuring point is a cross wire arranged on a horizontal plate of the first measuring point component and the second measuring point component, and the second measuring point is a cross wire arranged on a horizontal plate of the third measuring point component and the fourth measuring point component. The first measuring point component, the second measuring point component, the third measuring point component and the fourth measuring point component are angle steel pieces.
The working process of the automatic control system is as follows: in the lofting stage, the horizontal and vertical positions of the end mold are adjusted by a conventional method, after the end mold is roughly placed, the automatic measuring robot is arranged on the measuring platform, six measuring prisms are placed on six measuring points I of the matched section, the automatic measuring robot sequentially reads the distance and the relative angle of each measuring point I according to a preset program, and the acquired data are fed back to the central control unit; and after the matched segment is automatically adjusted in position according to the control system, the automatic measuring robot reads the measured data of the first measuring point, if the measured data exceed the lofting precision requirement, the position of the matched segment is automatically adjusted again until the lofting precision requirement is met, and the matched lofting is finished.
A casting section is then cast between the end form and the mating section. The position of the matching segments may change during casting. In the re-measurement stage, the measuring prism is placed on the first six measuring points of the matched segment, and the automatic measuring robot sequentially measures and feeds back re-measurement data to the central control unit for calculating the relative position of the segment after pouring; and then, the measuring prism is placed on each measuring point II of the pouring section, and the automatic measuring robot feeds back the measured data to the central control unit for calculating the relative position of each measuring point of the current pouring section after measurement.
And then, moving the matched sections to a prefabricated site for storage, moving the pouring sections to a matching area to form new matched sections, performing casting molding on a second pouring section after a lofting stage, a matching stage and a pouring stage, and sequentially completing the subsequent prefabricated construction of each section until all the prefabricated sections are cast.
Compared with the prior art, the automatic control system for the prefabricated line shape of the bridge segment has the following advantages: the measurement and adjustment processes in the lofting stage and the retest stage are automatically completed by the central control unit, so that the construction precision and the production efficiency are improved, the prefabrication construction time is shortened, the engineering cost is saved, and considerable economic benefits are achieved; in the lofting stage, the first measuring point and the second measuring point are fixed with the end mold and the matching section through the first connecting structure and the second connecting structure respectively, and the first connecting structure and the second connecting structure are removed in the retesting stage, so that the positions of the measuring points are guaranteed to be unchanged, the measuring accuracy of the positions of the measuring points is guaranteed, and the considered operation error is reduced; all construction operations are carried out in the prefabricated plant shed, so that construction errors caused by interference of weather, temperature, wind power, external vibration and the like are avoided, continuous construction is guaranteed, and segment construction quality and precision requirements are improved.
Drawings
Fig. 1 is a flow chart of a control system provided by the present invention.
FIG. 2 is a schematic view of a connection structure of each station member.
FIG. 3 is a top view of station member one.
FIG. 4 is a side view of station member one.
Fig. 5 is a schematic view of the measurement during the lofting phase.
FIG. 6 is a schematic diagram of the matched segment measurement during the review phase.
Fig. 7 is a schematic view of cast section measurements during the back measurement phase.
In the figure, 1, end die; 2. matching the segments; 3. pouring the segments; 4a, measuring a point I; 4b, measuring point two; 5. a measuring point component I; 6. a second measuring point component; 7. a measuring point component III; 8. rotating the cover plate; 9. a first bolt; 10. measuring point component four; 11. a second bolt; 12. matching the cover plate; 13. a third bolt; 14. a second bolt hole; 15. a first protective cover; 16. and a second protective cover.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The automatic control system of the prefabricated line shape of the segmental bridge shown in fig. 2 is used for controlling a forming module consisting of an end mold 1, a pouring area and a matching area, the matching area of the forming module is provided with a matching segment 2, and the pouring segment 3 is formed in the pouring area. The automatic control system comprises an automatic measuring and setting unit for measuring and setting the geometric positions of the matching section 2 and the pouring section 3, a central control unit for receiving the measuring data of the automatic measuring and setting unit and calculating the adjustment amount, and an automatic adjusting unit for adjusting the position of the matching section 2, wherein the central control unit calculates the error of the matching section 2 according to the data measured by the automatic measuring and setting unit and controls the adjustment amount of the automatic adjusting unit.
As shown in fig. 1, the central control unit includes a data processing module, an error adjustment calculating module, an automatic adjusting module, and a data processing and post-processing module. In the lofting stage, the measurement data of the automatic setting unit is input into the data processing module and the data recording and post-processing module, and the calculation data of the automatic adjusting module is fed back to the automatic setting unit; in the back measurement stage, the measurement data of the automatic measurement and setting unit is input into the data processing module and the data recording and post-processing module, and the calculation data of the error adjustment calculation module is fed back to the automatic measurement and setting unit in the next casting cycle lofting stage. The automatic adjusting unit is a plurality of jacks arranged below the matching section 2 or other devices capable of changing the longitudinal position of the matching section 2, and the longitudinal position of the matching section 2 is changed by controlling the extension and retraction of the jacks through the automatic adjusting module. At the same time, the jack can be arranged on the mobile vehicle body, and the position of the jack can be transversely changed to change the transverse position of the matching section 2.
In this embodiment, the automatic measuring and setting unit includes a high-precision automatic measuring robot fixed on the end mold 1, a plurality of first measuring points 4a arranged on the matching section 2, and a plurality of second measuring points 4b arranged on the pouring section 3.
The automatic control system has the following stages: 1. a lofting stage; 2. a matching stage; 3. a pouring stage; 4. and (5) a return test stage. The function of the data processing module comprises that X, Y, Z coordinate values of each measuring point are calculated through the measured distance and angle of the measuring point I4 a or the measuring point II 4b in the lofting stage and the return measuring stage; the error adjustment calculation module is used for calculating the actual relative position of the matched segment 2 and the current pouring segment 3 after pouring is finished according to the coordinate values of the measuring points in the retest stage, and comparing the actual relative position with the theoretical relative position to obtain an adjustment amount for lofting construction of the next segment; the automatic adjusting module is used for calculating the amount of adjustment of each hydraulic jack according to X, Y, Z coordinate values output by the measurement data processing module in the lofting stage and sending instructions to the automatic adjusting unit so as to control the automatic adjusting unit; the data recording and post-processing module is used for recording the theoretical position of each segment and the actual position record in the lofting stage and the back measurement stage, and is used for post-processing data.
As shown in fig. 5-7, the end mold 1 is rigidly connected with a measuring platform, and the high-precision automatic measuring robot is arranged on the measuring platform. The measuring platform is connected with the end die 1 in a steel mode, stability is good, relative displacement between a measuring base point of the high-precision automatic measuring robot and the end die 1 is guaranteed, and segment linear errors are reduced.
As shown in fig. 5-7, 6 measuring points one 4a are arranged on the upper surface of the matching segment 2, the number of measuring points two 4b is equal to the number of measuring points one 4a and arranged on the upper surface of the casting segment 3, and the measuring points one 4a and the measuring points two 4b are arranged in a one-to-one correspondence manner.
As shown in fig. 2, three measuring point members I5 which are uniformly distributed are fixed on one side of the matching section 2 close to the end die 1, and a plurality of measuring point members II 6 which are equal in number to the measuring point members I5 and are arranged in one-to-one correspondence are fixed on one side of the matching section 2 away from the end die 1, as shown in fig. 4, each measuring point member I5 is L-shaped, the outer surface of the vertical plate of the measuring point member I5 is flush with the side surface of the matching section 2, the upper surface of the horizontal plate of the measuring point member I5 is flush with the upper surface of the matching section 2, and a measuring point I4 a is arranged on the horizontal plate of each measuring point member I5; the measuring point member II 6 is L-shaped, the outer surface of the vertical plate of the measuring point member II 6 is flush with the other side surface of the matching section 2, the upper surface of the horizontal plate of the measuring point member II 6 is flush with the upper surface of the matching section 2, and a measuring point I4 a is arranged on the horizontal plate of each measuring point member II 6.
As shown in fig. 2, a plurality of measuring point members three 7 which are arranged corresponding to the measuring point members one 5 one by one are fixed on the end mold 1 through a fixing structure one, the measuring point members three 7 are L-shaped, the outer surfaces of the vertical plates of the measuring point members three 7 are flush with the side surface of the end mold 1, the upper surfaces of the horizontal plates of the measuring point members three 7 are flush with the upper surface of the end mold 1, and a measuring point two 4b is arranged on the horizontal plate of each measuring point member three 7.
As shown in figure 2, the first fixing structure comprises a rotary cover plate 8 hinged on the upper surface of the end die 1 through a roll shaft, a first bolt hole and a first bolt 9 which are arranged on a horizontal plate of the third measuring point member 7, the first bolt 9 is in threaded connection with the corresponding first bolt hole, and the second measuring point 4b on the third measuring point member 7 is located at the middle point of the line of the first bolt holes.
As shown in fig. 2, a plurality of measuring point members four 10 which are arranged corresponding to the measuring point members three 7 one by one are fixed on the matching segment 2 through a fixing structure two, the measuring point members four 10 are L-shaped, the outer surfaces of the vertical plates of the measuring point members four 10 are arranged in a manner of being attached to the outer surfaces of the vertical plates of the measuring point members one 5, the upper surfaces of the horizontal plates of the measuring point members four 10 are flush with the upper surfaces of the horizontal plates of the measuring point members one 5, and a measuring point two 4b is arranged on the horizontal plate of each measuring point member four 10.
As shown in fig. 2, the second fixing structure comprises a matching cover plate 12 fixed on the horizontal plate of the first measuring point member 5 through a second bolt 11, a third bolt hole and a third bolt 13 which are arranged on the horizontal plate of the fourth measuring point member 10, the third bolt 13 is in threaded connection with the corresponding third bolt hole, and the second measuring point 4b on the fourth measuring point member 10 is located at the middle point of the connecting line of the two third bolt holes; two bolt holes II 14 are formed in the horizontal plate of the measuring point member I5, the bolts II 11 are in threaded connection with the bolt holes II 14 correspondingly arranged, and as shown in FIG. 3, the measuring point I4 a on the horizontal plate of the measuring point member I5 is located at the middle point of the connecting line of the two bolt holes II 14.
As shown in FIG. 2, a first protective cover 15 is arranged on the lower portion of the first bolt 9, a second protective cover 16 is arranged on the lower portion of the third bolt 13, and the first protective cover 15 and the second protective cover 16 are arranged to prevent adhesion after concrete is poured.
As shown in FIG. 3, the first measuring point 4a is a cross-hair arranged on the horizontal plate of the first measuring point component 5 and the second measuring point component 6, and the second measuring point 4b is a cross-hair arranged on the horizontal plate of the third measuring point component 7 and the fourth measuring point component 10. The measuring point member I5, the measuring point member II 6, the measuring point member III 7 and the measuring point member IV 10 are angle steel pieces.
The working process of the automatic control system is as follows: as shown in fig. 1, in the lofting stage, the horizontal and vertical positions of the end mold 1 are adjusted by a conventional method, after the position is roughly placed, an automatic measuring robot is arranged on a measuring platform, six measuring prisms are placed on six measuring points one 4a of the matching section 2, the automatic measuring robot sequentially reads the distance and the relative angle of each measuring point one 4a according to a preset program, and acquired data are fed back to a central control unit; and after the matched segment 2 is automatically adjusted in position according to the control system, the automatic measuring robot reads the measuring data of each measuring point 4a, and if the measured data exceeds the lofting precision requirement, the position of the matched segment 2 is automatically adjusted again until the lofting precision requirement is met, so that the matched lofting is finished.
A casting section 3 is then cast between the end mould 1 and the mating section 2. The position of the matching segment 2 changes during casting. In the re-measurement stage, the measuring prism is placed on six measuring points one 4a of the matched segment 2, and the automatic measuring robot feeds back re-measurement data to the central control unit for calculating the relative position of the segment after pouring after sequentially measuring; and then, placing the measuring prism on each measuring point II 4b of the pouring section 3, feeding back the return measurement data to the central control unit for calculating the relative position of each measuring point of the current pouring section 3 after the automatic measuring robot measures the return measurement data.
And then, the matched segment 2 is moved to a prefabricated site for storage, the pouring segment 3 is moved to a matched area to form a new matched segment 2, a second pouring segment 3 is poured and formed after a lofting stage, a matching stage and a pouring stage, and the subsequent prefabricated construction of each segment is sequentially completed until all prefabricated segments are poured.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. An automatic control system for prefabricated line shapes of segmental bridges is used for controlling a forming module consisting of an end die (1), a pouring area and a matching area, the matching area of the forming module is provided with a matching segment (2), and the pouring area is provided with a pouring segment (3), and is characterized in that the automatic control system comprises an automatic measuring and setting unit for measuring and setting the geometric positions of the matching segment (2) and the pouring segment (3), a central control unit for receiving the measured data of the automatic measuring and setting unit and calculating adjustment quantity, and an automatic adjusting unit for adjusting the position of the matching segment (2), wherein the central control unit calculates the error of the matching segment (2) according to the measured data of the automatic measuring and setting unit and controls the adjustment quantity of the automatic adjusting unit; the automatic measuring and setting unit comprises a high-precision automatic measuring robot fixed on the end die (1), a plurality of measuring points I (4a) arranged on the matching section (2) and a plurality of measuring points II (4b) arranged on the pouring section (3); the central control unit comprises a data processing module, an error adjustment calculation module, an automatic adjustment module and a data processing and post-processing module; the automatic adjusting unit is a plurality of jacks arranged below the matching sections, and the relative positions of the matching sections and the cast-in-place sections are changed by controlling the extension and retraction of the jacks through the automatic adjusting module.
2. The system according to claim 1, wherein in the setting-out stage, the measurement data of the automatic setting-out unit is input into the data processing module and the data recording and post-processing module, and the calculation data of the automatic adjusting module is fed back to the automatic setting-out unit; in the back measurement stage, the measurement data of the automatic measurement and setting unit is input into the data processing module and the data recording and post-processing module, and the calculation data of the error adjustment calculation module is fed back to the automatic measurement and setting unit in the next casting cycle lofting stage.
3. The automatic control system for the prefabricated line shape of the segmental bridge according to claim 2, wherein the number of the first measuring points (4a) is 6, the first measuring points (4a) are arranged on the upper surface of the matched segment (2), the number of the second measuring points (4b) is equal to that of the first measuring points (4a), the second measuring points (4a) are arranged on the upper surface of the pouring segment (3), and the first measuring points (4a) and the second measuring points (4b) are arranged in a one-to-one correspondence manner.
4. The automatic control system for the precast line shape of the segmental bridge according to claim 3, wherein three measuring point members I (5) which are uniformly distributed are fixed on one side of the matched segment (2) close to the end mould (1), a plurality of measuring point members II (6) which are equal in number to the measuring point members I (5) and are arranged in one-to-one correspondence are fixed on one side of the matched segment (2) far away from the end mould (1), the measuring point members I (5) are L-shaped, the outer surface of a vertical plate of the measuring point members I (5) is flush with the side surface of the matched segment (2), the upper surface of a horizontal plate of the measuring point members I is flush with the upper surface of the matched segment (2), and a measuring point I (4a) is arranged on the horizontal plate of each measuring point member I (5); the measuring point component II (6) is L-shaped, the outer surface of the vertical plate of the measuring point component II (6) is flush with the other side surface of the matching section (2), the upper surface of the horizontal plate of the measuring point component II is flush with the upper surface of the matching section (2), and a measuring point I (4a) is arranged on the horizontal plate of each measuring point component II (6).
5. The automatic control system for the precast line shape of the segmental bridge according to claim 4, characterized in that a plurality of measuring point members III (7) which are arranged in one-to-one correspondence with the measuring point members I (5) are fixed on the end mould (1) through a fixing structure I, the measuring point members III (7) are L-shaped, the outer surfaces of the vertical plates of the measuring point members III (7) are flush with the side surfaces of the end mould (1), the upper surfaces of the horizontal plates of the measuring point members III are flush with the upper surface of the end mould (1), and a measuring point II (4b) is arranged on the horizontal plate of each measuring point member III (7).
6. The automatic control system for the precast line shape of the segmental bridge according to claim 5, wherein the first fixing structure comprises a rotary cover plate (8) hinged on the upper surface of the end mould (1) through a roll shaft, two bolt holes I and two bolts I (9) which are arranged on a horizontal plate of the third measuring point component (7), the bolts I (9) are in threaded connection with the corresponding bolt holes I, and the second measuring point (4b) on the third measuring point component (7) is positioned at the middle point of the connecting line of the two bolt holes I.
7. The automatic control system for the prefabricated line shape of the segmental bridge according to claim 6, wherein a plurality of measuring point members IV (10) which correspond to the measuring point members III (7) one by one are fixed on the matched segments (2) through fixing structures II, the measuring point members IV (10) are L-shaped, the outer surfaces of the vertical plates of the measuring point members IV (10) are arranged in a manner of being attached to the outer surfaces of the vertical plates of the measuring point members I (5), the upper surfaces of the horizontal plates of the measuring point members IV (10) are flush with the upper surfaces of the horizontal plates of the measuring point members I (5), and each horizontal plate of the measuring point members IV (10) is provided with a measuring point II (4 b).
8. The automatic control system for the prefabricated line shape of the segmental bridge according to claim 7, wherein the second fixing structure comprises a matching cover plate (12) fixed on a horizontal plate of the first measuring point member (5) through a second bolt (11), a third bolt hole and a third bolt (13) which are arranged on the horizontal plate of the fourth measuring point member (10), the third bolt (13) is in threaded connection with the corresponding third bolt hole, and the second measuring point (4b) on the fourth measuring point member (10) is positioned at the middle point of a connecting line of the three bolt holes; two bolt holes II (14) are formed in the horizontal plate of the first measuring point component (5), the bolts II (11) are in threaded connection with the bolt holes II (14) which are correspondingly arranged, and the first measuring point (4a) on the horizontal plate of the first measuring point component (5) is located at the middle point of the connecting line of the two bolt holes II (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810300250.5A CN108519782B (en) | 2018-04-04 | 2018-04-04 | Automatic control system for prefabricated line shape of segmental bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810300250.5A CN108519782B (en) | 2018-04-04 | 2018-04-04 | Automatic control system for prefabricated line shape of segmental bridge |
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| Publication Number | Publication Date |
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| CN108519782A CN108519782A (en) | 2018-09-11 |
| CN108519782B true CN108519782B (en) | 2021-08-13 |
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| CN112305989B (en) * | 2020-11-04 | 2023-09-29 | 山东淄博环宇桥梁模板有限公司 | Automatic adjustment control system and control method for segmental prefabrication assembly beam templates |
| CN115659479B (en) * | 2022-12-28 | 2023-03-17 | 湖北工业大学 | Bridge short-line method prefabricated construction beam section matching method |
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| CN101942805B (en) * | 2010-09-17 | 2012-03-28 | 广州瀚阳工程咨询有限公司 | Three-dimensional numerical control method for bridge section precasting technology |
| CN102733311B (en) * | 2012-07-02 | 2015-02-25 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Line shape control method for short line method segment prefabrication construction |
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| CN106049259A (en) * | 2016-06-16 | 2016-10-26 | 安徽省交通规划设计研究总院股份有限公司 | Bridge integrally-assembled pier and construction method |
| CN106436579A (en) * | 2016-08-25 | 2017-02-22 | 中铁二十三局集团轨道交通工程有限公司 | Linear control method and linear control device for sectional beam with specially-shaped cross section through short-line pedestal matching method |
| CN107524092B (en) * | 2017-09-12 | 2019-01-29 | 上海建工集团股份有限公司 | The spatial attitude adjustment device and its control method of prefabricated stand column section assembling |
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| Experimental and numerical characterization of thermal bridges in prefabricated building walls;L. Zalewski et al.;《Energy Conversion and Management》;20101231;全文 * |
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