CN217781738U - Embedded part reference positioning device for prefabricated bent cap of assembled type - Google Patents

Abstract

The utility model discloses an embedded part reference positioning device for prefabricated bent cap of assembled, reference positioning device includes a plurality of big stands along the straight line distribution, be equipped with the horizontal pole that is used for connecting each big stand between each big stand, the top of each big stand is fixed with a longeron with the direction that the horizontal pole is perpendicular, the longeron is kept away from the one end of big stand and is fixed with a crossbeam, crossbeam and horizontal pole relative parallel arrangement, and except the longeron of being connected with the big stand that is located the straight line head and the tail, be fixed with a little stand under each longeron, little stand is used for supporting the longeron; and one surfaces of the cross beam and the small upright post, which face the precast bent cap, are provided with a plurality of hole groups used for being connected with the bent cap embedded part. The utility model can meet the requirement of connection precision between the cover beam embedded parts and ensure the hole group precision and size precision of the prefabricated cover beam embedded connecting parts; the problem of the precision of two liang of matches of prefabricated bent cap is solved, can realize the quick construction of bridge position, improved the efficiency of construction.

Description

Embedded part reference positioning device for prefabricated bent cap of assembled type

Technical Field

The utility model relates to a prefabricated bent cap technical field of assembled especially relates to an embedded part benchmark positioner for prefabricated bent cap of assembled.

Background

The assembled bridge is a steel bridge, wherein the novel high-performance composite beam is one of the assembled bridge. The lower structure of the novel high-performance combined beam comprises a capping beam and a pier stud, and the capping beam is erected on the pier stud. The bent cap adopts light-duty structural style, and every bent cap is formed by four light-duty prefabricated bent caps concatenation, and four bent caps match through pre-buried connecting piece, connect with drawing the rivet between the pre-buried piece during the concatenation. The light construction of the components facilitates the transportation of water and land, the assembly greatly accelerates the erection and assembly speed of the bridge substructure, reduces the interference to urban traffic and construction pollution and noise disturbance, and solves the problems of large size, difficult transportation, special equipment for erection and limited application in urban bridges in the traditional prefabricated assembled beam. However, the in-plant prefabrication precision of the prefabricated bent cap directly influences the assembling precision and efficiency of the later-stage bridge position, and how to ensure the size precision of the prefabricated bent cap and the matching precision of the embedded connecting piece is important and difficult work.

In the past, the capping beam is integrally cast with the pier stud on site or is superposed with the pier stud after being integrally prefabricated. The integral casting in site needs a large amount of manpower to erect the support, bind the reinforcing steel bars and the like, so that the construction period is long, and the danger is high. The traditional capping beam is not beneficial to transportation, field hoisting, construction and the like due to too thick and heavy integral prefabrication.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing an improve prefabricated bent cap connection accuracy, improve the built-in fitting benchmark positioner who is used for prefabricated bent cap of assembled of efficiency of construction.

The technical scheme is as follows: the utility model discloses an embedded part benchmark positioner for prefabricated bent cap of assembled, benchmark positioner include a plurality of big stands along the straight line distribution, be equipped with the horizontal pole that is used for connecting each big stand between each big stand, the top of each big stand is fixed with a longeron with the vertical direction of horizontal pole, the longeron is kept away from the one end of big stand and is fixed with a crossbeam, crossbeam and horizontal pole relative parallel arrangement, and except the longeron of being connected with the big stand that is located the straight line head and the tail, be fixed with a little stand under each longeron, little stand is used for supporting the longeron; and one surfaces of the cross beam and the small upright post, which face the precast bent cap, are provided with a plurality of hole groups used for being connected with the bent cap embedded part.

The large and small columns are the main stressed structures, so the strength of the large and small columns must be enough, and the columns cannot be obviously deformed when the precast capping beam is poured and demoulded.

Furthermore, the device also comprises a plurality of stiffeners connected with the longitudinal beams and used for supporting the longitudinal beams.

Furthermore, the large upright column comprises a base plate for being fixed with the bottom surface, two large upright column cover plates relatively fixed on two sides of the base plate, a large upright column web plate fixed between the two large upright column cover plates, and a large upright column connecting plate for connecting the large upright column cover plates and the large upright column web plate. The large upright post is connected with the ground through foundation bolts, can be disassembled and is wholly subjected to lateral bending moment.

Furthermore, the cross beam comprises a first cross beam cover plate and a second cross beam cover plate which are arranged oppositely, a cross beam web plate arranged between the first cross beam cover plate and the second cross beam cover plate, and a plurality of cross beams which are respectively arranged between the first cross beam cover plate and the cross beam web plate and between the second cross beam cover plate and the cross beam web plate are stiffened. The crossbeam is slender member, and the face that links to each other with the bent cap is whole machine tooling after the welding, guarantees the plane degree. On one hand, the deformation after welding is controlled, and on the other hand, the close contact between the cross beam and the cover beam during connection is ensured.

Furthermore, the small upright column comprises a small upright column square tube, a small upright column upper cover plate fixed on the top surface of the small upright column square tube, a small upright column lower cover plate fixed on the bottom surface of the small upright column square tube, and a small upright column connecting plate arranged on one surface of the small upright column square tube facing the precast bent cap, wherein the small upright column connecting plate is provided with a plurality of bolt hole groups; the vertical plate is arranged between the small upright connecting plate and the small upright square tube and is used for connecting the small upright connecting plate and the small upright square tube. The surface of the small upright post connected with the bent cap is integrally machined, so that the flatness is ensured. The lower end of the small upright post is connected with the ground through the foundation bolt so as to ensure stability, and the upper end of the small upright post is connected with the longitudinal beam so as to play a role in supporting the longitudinal beam.

Furthermore, the small stand column also comprises a first small stand column stiffening plate which is fixed between the vertical plate and the small stand column connecting plate and used for reinforcing the vertical plate and the small stand column connecting plate.

Furthermore, the small upright post also comprises a second small upright post stiffening plate which is fixed between the small upright post square tube and the small upright post lower cover plate and used for reinforcing the small upright post square tube and the small upright post lower cover plate.

Furthermore, the longitudinal beam comprises two longitudinal beam cover plates arranged in parallel relatively, a longitudinal beam web fixed between the two longitudinal beam cover plates, a first connecting seat plate arranged at one end of each longitudinal beam cover plate and used for being connected with the large stand column, and a second connecting seat plate arranged at the other end of each longitudinal beam cover plate and used for being connected with the small stand column. The longitudinal beams mainly play a role in connecting the cross beams and the large upright posts.

Furthermore, the horizontal pole includes horizontal pole side pipe, establishes the shrouding at horizontal pole side pipe both ends, the horizontal pole connecting plate of being connected with the shrouding of horizontal pole side pipe, and the horizontal pole connecting plate is used for being connected with big stand. The cross bar mainly plays a role in connecting adjacent large upright posts.

Has the beneficial effects that: compared with the prior art, the utility model has the advantages of as follows:

(1) The requirement on the connection precision between the prefabricated bent cap embedded part and the prefabricated bent cap embedded part can be met, and the hole group precision and the size precision of the prefabricated bent cap embedded part are guaranteed; the problem of precision of matching every two prefabricated bent caps is solved, rapid construction of bridge positions can be realized, and construction efficiency is improved;

(2) Can dismantle, two preparation about the precast bent cap can be satisfied to same kind of device, has both satisfied the simple installation, has saved certain cost again.

Drawings

Fig. 1 is a schematic perspective view of a reference positioning device according to the present invention;

fig. 2 is a front view of the datum-positioning device of the present invention;

fig. 3 is a top view of the datum-positioning device of the present invention;

FIG. 4 is a right side view of the datum locator of the present invention without the small post;

FIG. 5 is a right side view of the datum locator of the present invention with a small post;

fig. 6 is a front view of the large column of the present invention;

fig. 7 is a right side view of the large column of the present invention;

fig. 8 is a front view of the cross beam of the present invention;

fig. 9 is a right side view of the cross beam of the present invention;

fig. 10 is a front view of the small column of the present invention;

fig. 11 is a right side view of the small column of the present invention;

fig. 12 is a front view of the longitudinal beam of the present invention;

fig. 13 is a front view of the cross bar of the present invention;

fig. 14 is a schematic view of the datum-positioning device of the present invention;

1. a reference positioning device; 2. a bent cap embedded part; 3. pouring a mold; 11. a large upright post; 111. a cover plate; 112. a large column web; 113. a large upright connecting plate; 114. a base plate; 12. a cross beam; 121. a beam cover plate; 122. a beam web; 123. a beam cover plate; 124. stiffening the cross beam; 13. a small upright post; 131. an upper cover plate of the small upright post; 132. a small upright square tube; 133. a vertical plate; 134. a small upright post connecting plate; 135. a first small column stiffening plate; 136. a small upright post lower cover plate; 137. a second small upright column stiffening plate; 14. a stringer; 141. a first connection seat plate; 142. a longitudinal beam cover plate; 143. a stringer web; 144. a second connection seat plate; 15. stiffening; 16. a cross bar; 161. a cross bar connecting plate; 162. closing the plate; 163. horizontal pole side pipe.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

The embodiment provides an embedded part reference positioning device for an assembled prefabricated bent cap, wherein the assembled prefabricated bent cap is manufactured in a split mode, four bent caps are prefabricated in a factory, and a bridge site is spliced and connected into a whole bent cap on site and then connected with a pier stud. And connecting and matching the prefabricated bent caps through embedded parts, and finally riveting by using pull rivets. The manufacturing of the light-weight segmented bent cap not only facilitates the field transportation, hoisting and installation work, but also improves the construction efficiency and shortens the construction period.

As shown in fig. 1 to 5, the fiducial positioning device 1 includes: large columns 11, cross beams 12, small columns 13, longitudinal beams 14 and cross bars 16 which are connected by bolts, and stiffeners 15 for supporting the longitudinal beams 14. Main parts pass through bolted connection among the benchmark positioner 1, and the dismantlement performance is good, the used repeatedly in the later stage of being convenient for. The cross beam 12 and the small upright column 13 are closely attached to the connection surface of the bent cap and are fixedly connected with the bent cap embedded part through punching nails and bolts. The bent cap prefabricated part is divided into a left part and a right part which are symmetrical. In order to ensure that the same datum positioning device can meet the requirements of manufacturing left and right cover beams, the datum positioning device 1 must be detachable and convenient to install, and meanwhile, the positioning of the hole groups needs to be accurate. The mutual constraint between the components can prevent the precast capping beam from being deformed during pouring and demoulding.

In one embodiment, the reference positioning device 1 comprises four large vertical columns 11, the four large vertical columns 11 are distributed along a straight line, and a cross rod 16 is fixed between the large vertical columns 11 and used for connecting the large vertical columns 11; the longitudinal beams 14 are fixed at the top ends of the four large vertical columns 11 and are vertical to the cross rods 16, and except the longitudinal beam 14 at the head position, a small vertical column 13 is respectively arranged below the longitudinal beam 14 at the middle position; one end of the longitudinal beam 14 far away from the large upright post 11 is fixed with the cross beam 12; the cross beam 12 and the cross rod 16 are parallel to each other, a plurality of hole groups used for being connected with the cover beam embedded parts are formed in the surfaces, facing the prefabricated cover beam, of the cross beam 12 and the small upright posts 13, and the stiffening ribs 15 are connected with the longitudinal beams 14 and used for supporting the longitudinal beams 14.

In one embodiment, as shown in fig. 6-7, the large column 11 comprises a large column cover plate 111, a large column web plate 112, a large column connecting plate 113 and a base plate 114, the base plate 114 is fixed to the ground, the two large column cover plates 111 are fixed on two sides of the base plate 114, the large column web plate 112 is fixed between the two large column cover plates 111, and the large column connecting plate 113 is used for connecting the large column cover plate 111 and the large column web plate 112. The upright post is a key stress component, the thickness of the flange plate of the upright post is 28mm, the thickness of the web plate is 16mm, the width of the web plate is 850mm, and the upright post can bear larger bending moment. The thickness of the bottom plate of the upright column is 24mm, and the verticality deviation between the bottom plate and the flange plate is guaranteed to be less than or equal to 1.0mm during manufacturing. The cover plate 111 is provided with bolt connection holes, and the hole group is used for connecting the large upright post 11 and the longitudinal beam 14.

In one embodiment, as shown in FIGS. 8-9, the beam 12 is an elongated member including a first beam cover 121, a plurality of beam webs 122, a second beam cover 123, and a plurality of beam stiffeners 124. The first beam cover plate 121 and the second beam cover plate 123 are arranged oppositely, the beam web 122 is arranged between the first beam cover plate 121 and the second beam cover plate 123, and the plurality of beam stiffeners 124 are respectively arranged between the first beam cover plate 121 and the beam web 122 and between the second beam cover plate 123 and the beam web 122. The thickness of the first beam cover plate 121 and the second beam cover plate 123 are both 24mm, and the thickness of the beam web 122 is 20mm. The second beam cover plate 123 is provided with a notch to prevent interference with the mold during installation. The first cross beam cover plate 121 is provided with a hole group which is used for being connected with a prefabricated cover beam embedded part and plays a role in installation and positioning; the requirement on the overall plane of the first beam cover plate 121 and the second beam cover plate 123 is high, integral machining is needed, and the roughness grade of the flatness is Ra12.5. The cross beam 12 is a key stress member, and particularly has the mechanical properties of bending resistance and torsion resistance; the cross beam 12, the large upright post 11 and the small upright post 13 form an integral restraint system, so that the stability of the cross beam is enhanced, and the deformation of the cross beam is reduced.

In one embodiment, as shown in fig. 10-11, the small columns 13 include small column upper cover plates 131, small column square tubes 132, risers 133, small column connecting plates 134, first small column stiffening plates 135, small column lower cover plates 136, and second small column stiffening plates 137; the upper cover plate 131 of the small upright post is fixed on the top surface of the square tube 132 of the small upright post, the lower cover plate 136 of the small upright post is fixed on the bottom surface of the square tube 132 of the small upright post, the connecting plate 134 of the small upright post is arranged on one surface of the square tube 132 of the small upright post facing the precast bent cap, and a plurality of bolt hole groups are arranged on the connecting plate; the vertical plate 133 is arranged between the small upright connecting plate 134 and the small upright square tube 132 and is used for connecting the small upright connecting plate 134 and the small upright square tube 132, and the first small upright stiffening plate 135 is fixed between the vertical plate 133 and the small upright connecting plate 134 and is used for reinforcing the vertical plate 133 and the small upright connecting plate 134; the second small upright post stiffening plate 137 is fixed between the small upright post square tube 132 and the small upright post lower cover plate 136, and is used for reinforcing the small upright post square tube 132 and the small upright post lower cover plate 136. The small upright column 13 plays a main supporting role integrally, and the small upright column upper cover plate 131 is connected with the longitudinal beam 14, so that the integral vertical deformation caused by insufficient rigidity is avoided. The thickness of the upper cover plate 131 of the small upright post is 24mm, and a bolt hole group is formed for bolting with the longitudinal beam; the thickness of the small upright post lower cover plate 136 is 24mm, and a bolt hole group is formed for connecting with ground foundation bolts. The vertical plate 133 is 24mm thick, and is provided with a bolt hole group for connecting with a bent cap embedded part; and the roughness grade of the flatness of one side connected with the bent cap embedded part is Ra12.5.

In one embodiment, as shown in fig. 12, the stringer 14 includes a first connection seat plate 141, a stringer cover plate 142, a stringer web 143, and a second connection seat plate 144. The two longitudinal beam cover plates 142 are arranged in parallel and fixed at two ends of the longitudinal beam web 143, respectively, the first connecting seat plate 141 is arranged at one end of the longitudinal beam cover plate 142 and used for connecting with the large upright post 11, and the second connecting seat plate 144 is arranged at the other end of the longitudinal beam cover plate 142 and used for connecting with the small upright post 13. The thickness of the first connecting seat plate 141 is 20mm, the seat plate is provided with a hole group, one end of the first connecting seat plate 141 is connected with the cross beam 12, and the first connecting seat plate 141 at the other end is connected with the large upright post 11. The stringer cover plates 142 are 20mm thick and the stringer webs 143 are 16mm thick. The longitudinal beams 14 mainly serve to connect the cross beams 12 and the large columns 11 and bear longitudinal stress.

In one embodiment, as shown in fig. 13, the cross bar 16 comprises a cross bar connecting plate 161, a closing plate 162 and a cross bar square tube 163. The closing plates 162 are arranged at two ends of the cross bar square tube 163, the cross bar connecting plates 161 are connected with one ends of the closing plates 162 far away from the cross bar square tube 163, and the cross bar connecting plates 161 are used for connecting the large columns 11. The cross bar connecting plate 161 is 16mm thick, is provided with a bolt hole group and is connected with the large upright post connecting plate 113; the square tube 163 of the cross bar is F100X 5. The cross bar 16 supports two adjacent large upright posts 11, and avoids the transverse deformation of the upright posts due to stress.

In one embodiment, the stiffeners 15 are used to support the stringers 14 for increased strength.

As shown in fig. 14, the present embodiment provides a method for using an embedded part reference positioning apparatus for an assembled precast capping beam:

(1) And (3) pouring a concrete bearing platform, embedding steel plates on the upper part of the bearing platform, wherein all the steel plates of the bearing platform must be ensured to be smooth, and the elevation of the platform is consistent. Foundation bolts are embedded in the bearing platform and are used for being connected with the large upright post 11;

(2) The large upright post 11 is hoisted and placed on the embedded steel plate of the bearing platform, and the large upright post base plate 114 is connected with the foundation bolt. Adjusting the space between the large upright posts to reach the theoretical size;

(2) The small upright post 13 is placed on the embedded steel plate of the bearing platform, and the lower cover plate 136 of the small upright post is connected with the foundation bolt. Adjusting the distance between the small upright columns to reach the theoretical size;

(3) The cross beam 12 and the small upright 13 are connected. Because there is no direct connection between the two components, in order to ensure that the connecting sides of the beam cover plate 121, the small upright post vertical plate 133 and the bent cap embedded part are on the same plane, the process splice plate can be made in advance for connection and positioning. One end hole group of the splice plate is connected with the beam cover plate 121, the other end hole group is connected with the small upright post vertical plate 133, a special positioning punching nail is manufactured, the outer diameter of the punching nail is 0.1mm smaller than the aperture of a bolt, and the accurate positioning of the joint can be realized by the punching nail;

(4) Hoisting a longitudinal beam 14 in place, connecting one end of the longitudinal beam with a large upright post 11 and the other end of the longitudinal beam with a cross beam 12, and bolting and fixing the longitudinal beam and the cross beam by bolts;

(5) Hoisting the cross bar 16 in place, and bolting and fixing cross bar connecting plates 161 at two ends of the cross bar 16 and large upright connecting plates 113 of the large upright 11 by using bolts;

(7) Connecting the present stiffener 15 to the stringer 14;

(8) After the installation and positioning are carried out according to the steps (1) - (7), the bent cap embedded part 2 is placed into the pouring mold 3, the bent cap embedded part 2, the beam cover plate 121 and the small upright post vertical plate 133 are fixed by using punching nails, and the hole group alignment is fixed by using bolts after meeting the expected requirements.

(9) And (3) manufacturing the prefabricated bent cap of the left part, wherein the prefabricated bent cap of the right part is manufactured by only mirroring the installation position and repeating the steps (1) to (8).

The utility model provides an embedded part benchmark positioner for prefabricated bent cap of assembled can effectively guarantee the size precision of prefabricated bent cap and the matching precision of pre-buried connecting piece, improves production efficiency.

The utility model discloses a stand, crossbeam link to each other with prefabricated bent cap embedded connector to the hole crowd of stand and crossbeam is the benchmark, has guaranteed that the bent cap built-in fitting hole crowd precision of each piece is unanimous, provides convenience for the concatenation of follow-up bent cap. The surfaces of the upright columns and the cross beams, which are connected with the embedded parts, are machined, so that the flatness of the connection surfaces is ensured. During installation, the surface is closely attached to the embedded part, flatness and straightness of the embedded connecting part are guaranteed, and the problem of size out-of-tolerance caused by manufacturing of the bent cap due to insufficient rigidity of the die is solved. Through the utility model discloses can solve because of the not enough size that arouses bent cap preparation to produce of mould rigidity poor problem of poor and the prefabricated bent cap connection accuracy problem of difference.

Claims (9)

1. An embedded part reference positioning device for an assembled prefabricated bent cap is characterized in that the reference positioning device (1) comprises a plurality of large upright posts (11) which are distributed along a straight line, cross rods (16) used for connecting the large upright posts (11) are arranged among the large upright posts (11), a longitudinal beam (14) is fixed at the top end of each large upright post (11) in the direction perpendicular to the cross rods (16), a cross beam (12) is fixed at one end, far away from the large upright posts (11), of the longitudinal beam (14), the cross beam (12) and the cross rods (16) are arranged in parallel relatively, a small upright post (13) is fixed below each longitudinal beam (14) except the longitudinal beam (14) connected with the large upright posts (11) at the head and the tail of the straight line, and the small upright post (13) is used for supporting the longitudinal beam (14); and one surfaces of the cross beam (12) and the small upright post (13) facing the precast capping beam are provided with a plurality of hole groups for connecting with the capping beam embedded parts.

2. The embedment reference positioning device for the fabricated precast cap beam of claim 1, further comprising a plurality of stiffeners (15), the stiffeners (15) being connected to the longitudinal beams (14) for supporting the longitudinal beams (14).

3. The embedment reference positioning device for the fabricated precast cap beam of claim 1, wherein the large columns (11) include a base plate (114) for being fixed with the bottom surface, two large column cover plates (111) fixed relatively to both sides of the base plate (114), a large column web (112) fixed between the two large column cover plates (111), and a large column connecting plate (113) for connecting the large column cover plates (111) and the large column web (112).

4. The embedment datum positioning device for the fabricated precast cap beam of claim 1, wherein the beam (12) includes a first beam cover plate (121) and a second beam cover plate (123) disposed opposite each other, a beam web (122) disposed between the first beam cover plate (121) and the second beam cover plate (123), and a plurality of beam stiffeners (124) disposed between the first beam cover plate (121) and the beam web (122) and between the second beam cover plate (123) and the beam web (122), respectively.

5. The embedded part reference positioning device for the assembled precast capping beam according to claim 1, wherein the small upright (13) comprises a small upright square tube (132), a small upright upper cover plate (131) fixed on the top surface of the small upright square tube (132), a small upright lower cover plate (136) fixed on the bottom surface of the small upright square tube (132), a small upright connecting plate (134) arranged on one surface of the small upright square tube (132) facing the precast capping beam, and a plurality of bolt hole groups are arranged on the small upright connecting plate; the vertical plate (133) is arranged between the small upright post connecting plate (134) and the small upright post square tube (132) and is used for connecting the small upright post connecting plate (134) and the small upright post square tube (132).

6. The embedment datum positioning device for the fabricated precast capping beam of claim 5, wherein the small stud (13) further comprises a first small stud stiffener (135), the first small stud stiffener (135) being fixed between the riser (133) and the small stud connecting plate (134) for reinforcing the riser (133) and the small stud connecting plate (134).

7. The embedded part datum positioning device for the assembled precast capping beam according to claim 5, wherein the small upright posts (13) further comprise second small upright post stiffening plates (137), and the second small upright post stiffening plates (137) are fixed between the small upright post square tubes (132) and the small upright post lower cover plates (136) and used for reinforcing the small upright post square tubes (132) and the small upright post lower cover plates (136).

8. The embedment datum positioning device for the fabricated precast cap beam of claim 1, wherein the longerons (14) include two longeron cover plates (142) disposed in parallel relatively, a longeron web (143) fixed between the two longeron cover plates (142), a first connection base plate (141) provided at one end of the longeron cover plates (142) for connection with the large column (11), and a second connection base plate (144) provided at the other end of the longeron cover plates (142) for connection with the small column (13).

9. The embedded part reference positioning device for the assembled precast capping beam according to claim 1, wherein the cross bar (16) comprises a cross bar square tube (163), sealing plates (162) provided at both ends of the cross bar square tube (163), and cross bar connecting plates (161) connected to the sealing plates (162) of the cross bar square tube (163), the cross bar connecting plates (161) being used for connecting with the large columns (11).

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