CN215289719U - Cast-in-place box girder large-segment support structure - Google Patents
Cast-in-place box girder large-segment support structure Download PDFInfo
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- CN215289719U CN215289719U CN202120790086.8U CN202120790086U CN215289719U CN 215289719 U CN215289719 U CN 215289719U CN 202120790086 U CN202120790086 U CN 202120790086U CN 215289719 U CN215289719 U CN 215289719U
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Abstract
The utility model relates to a large-section support structure of a cast-in-situ box girder, which comprises a position control sleeve, a stiff support column, a support column connecting rib, a support steel pipe, a steel pipe assembling frame and a support top beam; the position control sleeve and the connecting support pier are firmly connected with the hardened ground; the weight bag body is positioned at the bottom of the stiff support column, the bottom of the stiff support column is positioned in the position control sleeve, and the column bottom plug block is positioned in a gap between the stiff support column and the position control sleeve. The utility model has the advantages that: the upper supporting top beam is supported by combining the stiff supporting columns and the supporting steel pipes, the weight bag bodies are filled in the stiff supporting columns, the stiff supporting columns can be fastened through the position control sleeves and the column bottom plug blocks, and the supporting column connecting ribs are arranged between the adjacent stiff supporting columns, so that the integrity and the laying efficiency of the stiff supporting columns can be effectively improved; the steel pipe assembling frame is used for limiting the position of the supporting steel pipe, the supporting steel pipe can be fastened through the pressing plate fastening bolt, the integrity of the supporting steel pipe is improved, and the stress performance of the supporting steel pipe is improved.
Description
Technical Field
The utility model relates to a can effectively reduce the degree of difficulty that the support system laid, improve the atress performance of supporting the steel pipe, improve the cast-in-place case roof beam major segment supporting structure of site operation efficiency, be applicable to the case roof beam and pour the engineering.
Background
Along with more and more urban construction contents, more and more large-span variable-section continuous cast-in-place box girders are provided. When a large-span variable-section continuous cast-in-place box girder is constructed, the difficulties of field construction are generally concentrated on the aspects of support system arrangement, field casting quality, post-cast section concrete casting and the like, wherein the support system arrangement has obvious influence on the field construction quality and safety.
The prior art has a cast-in-place continuous box girder formwork system and a construction method, which comprises a pile-supported cast-in-place continuous box girder bracket system, a cast-in-place continuous box girder outer mold and a cast-in-place continuous box girder inner mold; the pile-supported cast-in-place continuous box girder support system comprises a distribution girder, a Bailey girder, a bearing girder, a buckle device, a steel upright post, a horizontal brace rod, a scissor brace rod, a connecting steel plate, a flange plate, a reinforcing rib, a soft base layer, a hard base layer, a buckle plate ring and a cast-in-place pile; the cast-in-place continuous box girder external mold comprises a flange plate mold, a hinge bolt, a back rib, a side mold, a bottom mold, a safety net, a support rod, an adjustable jacking, a distribution beam, a Bailey beam, a bearing beam, a cross brace and a steel upright post; the cast-in-situ continuous box girder internal mold comprises a steel panel, a side rib, a second bolt, a bar steel, a stay bar, an adjustable jacking, a top rib, a positioning steel bar and a first bolt. Although the construction method solves the problems that the cast-in-situ bored pile steel upright post and the upper transverse bridge bearing beam can be quickly and easily connected and safely and stably connected, the construction method has improvement on the aspects of the laying difficulty of a bracket system, the construction efficiency, the stability of the stress performance and the like.
In view of this, in order to effectively reduce the on-site construction difficulty of the cast-in-place box girder large-segment support system and improve the construction quality, the cast-in-place box girder large-segment support structure which can reduce the distribution difficulty of the support system, improve the stress performance of the support steel pipe and improve the on-site construction efficiency is urgently needed to be invented at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough among the prior art, providing one kind not only can reduce the degree of difficulty that the support system laid, can improve on-the-spot efficiency of construction's cast-in-place case roof beam major segment supporting structure moreover.
The cast-in-situ box girder large-section support structure comprises a position control sleeve, a stiff support column, a support column connecting rib, a support steel pipe, a steel pipe assembling frame and a support top girder; the position control sleeve and the connecting support pier are firmly connected with the hardened ground; the weight bag body is positioned at the bottom of the stiff support column, the bottom of the stiff support column is positioned in the position control sleeve, and the column bottom plug block is positioned in a gap between the stiff support column and the position control sleeve; the support column connecting hoop is sleeved outside the stiff support column, a column side connecting groove is formed in the support column connecting hoop, a support column connecting rib is arranged between the column side connecting grooves opposite to the mirror images, and the support column connecting rib and the column side connecting groove are connected and fastened through a connecting rib plug block; a supporting column connecting rod is arranged between the opposite supporting column connecting hoop and the connecting supporting pier; pier side anchor ears are arranged on the periphery of the poured bridge pier column, and hoop side connecting ribs on the outer sides of the pier side anchor ears are connected with adjacent column side connecting grooves through brace connecting ribs; the support steel pipe sequentially penetrates through the splicing frame ring pipe of the steel pipe splicing frame, the splicing frame ring pipe is connected with the pressing plate fastening bolt, and the plate fastening bolt is tightly attached to the outer wall of the support steel pipe through the steel pipe pressing plate; the support steel pipes are positioned between the stiff support columns and are firmly connected with the stiff support columns through the column pipe connecting ribs; the top surfaces of the stiff support columns and the support steel pipes are equal in height, and support top beams are arranged at the top ends of the stiff support columns and the support steel pipes; a lacing bar counter-pressing plate is arranged in the supporting top beam, and a fastening lacing bar is arranged between the lacing bar counter-pressing plate and the pier side hoop.
Preferably, the method comprises the following steps: the weight bag body comprises a wrapping cloth bag and a cloth bag filling body; the wrapping cloth bag is formed by sewing geotextile, and the cloth bag filling body is made of medium-coarse sand material; the stiff stay is formed by rolling a steel pipe; the brace connecting hoop is formed by rolling a steel plate, the cross section of the brace connecting hoop is in a circular ring shape, the inner diameter of the brace connecting hoop is the same as the outer diameter of the stiff brace, the brace connecting hoop comprises two brace side hoop plates with the same shape, and a brace side connecting groove is welded on the outer side of each brace side hoop plate; the column side connecting groove is formed by rolling a steel plate, is U-shaped in cross section and is connected with the column side hoop plate in a welding mode; the brace connecting rib is formed by rolling a steel plate, the cross section of the brace connecting rib is U-shaped, and two ends of the brace connecting rib are embedded into the column side connecting grooves; the support column connecting rod comprises a nut and a screw rod, the fastening directions of the screw rods on the two sides of the nut are opposite, and the two ends of the nut are respectively connected with the connecting support pier and the support column connecting hoop which are connected through a connecting rod rotating hinge.
Preferably, the method comprises the following steps: the steel pipe assembling frame comprises 4-9 assembling frame ring pipes which are arranged at equal intervals in a rectangular shape, and adjacent assembling frame ring pipes are firmly connected through an assembling frame connecting plate; the pipe wall of the frame splicing ring pipe is provided with threads connected with the pressing plate fastening bolt; the pressing plate fastening bolt is formed by rolling a screw rod, a steel pipe pressing plate is inserted into the end of the splicing frame ring pipe and is connected with the steel pipe pressing plate through a side connecting groove.
Preferably, the method comprises the following steps: the lacing wire back pressure plate is arranged at the top or the middle part of the supporting top beam and is connected with the supporting top beam in a binding or welding way.
The utility model has the advantages that:
(1) the utility model discloses a strength nature props the post and supports the support back timber on steel pipe combination support upper portion, at the inside packing ballast bag body that strength nature propped the post to accessible accuse position sleeve and column bottom chock fastening strength nature prop the post, set up between adjacent strength nature props the post and prop the post splice bar, can effectively promote the wholeness of strength nature prop the post and lay efficiency.
(2) The utility model discloses a steel pipe spelling frame is injectd the position of supporting the steel pipe to accessible clamp plate fastening bolt fastening supports the steel pipe, has promoted the wholeness that supports the steel pipe, has improved the atress performance that supports the steel pipe.
Drawings
FIG. 1 is a schematic structural view of a large section support system of a cast-in-place box girder of the utility model;
FIG. 2 is a schematic view of a stiffened stay mounting structure of FIG. 1;
FIG. 3 is a schematic view of the connection structure of the steel pipe assembling frame and the supporting steel pipe in FIG. 1;
fig. 4 is a schematic cross-sectional view of the brace connector of fig. 2.
Description of reference numerals: 1-hardening the ground; 2-bridge pier stud; 3-position control sleeve; 4-connecting supporting piers; 5-weight bag body; 6-stiff stay; 7-column bottom chock; 8-brace connection hoops; 9-column side connecting groove; 10-brace connecting ribs; 11-connecting rib chock blocks; 12-a strut link; 13-side hoop fastening of pier; 14-hoop side tie bars; 15-supporting the steel pipe; 16-a steel pipe assembling frame; 17-splicing frame ring pipes; 18-platen fastening pins; 19-pressing a steel pipe plate; 20-column tube connecting ribs; 21-supporting top beams; 22-lacing wire counter pressing plate; 23-fastening lacing wire; 24-wrapping the cloth bag; 25-a cloth bag filler; 26-column side straps; 27-connecting rod rotation hinge; 28-splicing frame connecting plates; 29-plate side connecting slots.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
As an embodiment, fig. 1 is the structural schematic diagram of the large section bracket system of the cast-in-place box girder of the present invention, fig. 2 is a schematic diagram of a stiff bracing column installation structure of fig. 1, fig. 3 is a schematic diagram of a connection structure of the steel pipe assembly frame and the supporting steel pipe of fig. 1, and fig. 4 is a schematic diagram of a cross section of the bracing column connection hoop of fig. 2. Referring to fig. 1-4, in the cast-in-place box girder large-section support structure, a weight bag body 5 is firstly inserted into a position control sleeve 3 from the bottom of a stiff support column 6, then the stiff support column 6 is inserted into the position control sleeve 3, and then a column bottom plug block 7 is inserted into a gap between the stiff support column 6 and the position control sleeve 3; correcting the top surface elevations of the stiff support column 6 and the support steel pipe 15, and supporting an upper support top beam 21 by combining the stiff support column 6 and the support steel pipe 15; a weight bag body 5 is filled in the stiff support columns 6, the stiff support columns 6 can be fastened through the position control sleeve 3 and the column bottom plug block 7, and support column connecting ribs 8 are arranged between the adjacent stiff support columns 6; the position of the steel pipe 15 is limited by the steel pipe assembling frame 16, the steel pipe pressure plate 19 is applied with fastening pressure by the pressure plate fastening bolt 18, and the steel pipe 15 is fastened and supported by the pressure plate fastening bolt 18; and a fastening lacing wire 23 is arranged between the lacing wire pressure plate 22 and the pier side hoop 13, and tensioning stress is applied to the fastening lacing wire 23, and fastening pressure is applied to the rigid support column 6 and the support steel pipe 15 through the support top beam 21.
The hardened ground 1 is a concrete ground, the strength grade of the concrete is C35, and the thickness of the concrete is 25 cm.
The bridge pier stud 2 is formed by pouring reinforced concrete materials, and the strength grade of the concrete is C50.
The position control sleeve 3 is formed by rolling a steel pipe with the diameter of 30 cm.
The connecting support pier 4 is formed by rolling a steel plate with the thickness of 10mm, the width of the connecting support pier is 10cm, and the height of the connecting support pier is 20 cm.
The weight bag body 5 comprises a wrapping cloth bag 24 and a cloth bag filling body 25; the wrapping cloth bag 24 is formed by sewing geotextile, and the cloth bag filling body 25 is made of medium-coarse sand material.
The stiff stay 6 is formed by rolling a steel pipe with the diameter of 20 cm.
The column bottom chock 7 is formed by rolling a steel plate with the thickness of 10 mm.
The brace connecting hoop 8 is formed by rolling a steel plate with the thickness of 2mm, is circular in cross section, has the same inner diameter as the outer diameter of the stiff brace 6, comprises two brace side hoop plates 26 with the same shape, and is welded with a brace side connecting groove 9 at the outer side of the brace side hoop plates 26; the column side connecting groove 9 is formed by rolling a steel plate with the thickness of 2mm, is U-shaped in cross section, 10cm in height and 20mm in width, and is connected with the column side hoop plate 26 in a welding mode.
The brace connecting rib 10 is formed by rolling a steel plate with the thickness of 10mm, the cross section of the brace connecting rib is U-shaped, the width of the brace connecting rib is 5cm, and two ends of the brace connecting rib are embedded into the brace side connecting grooves 9.
The connecting rib chock 11 is formed by rolling a steel plate with the thickness of 10 mm.
The brace connecting rod 12 comprises a nut and a screw rod, the fastening directions of the screw rods on the two sides of the nut are opposite, the diameter of the screw rod is 30mm, and the two ends of the screw rod are respectively connected with the connecting brace 4 and the brace connecting hoop 8 which are connected through a connecting rod rotating hinge 27. The connecting rod rotating hinge 27 adopts a spherical hinge with the diameter of 30 mm.
The pier side hoop 13 comprises two hoop plates with the same shape and is formed by rolling a steel plate with the thickness of 10 mm.
The hoop-side connecting ribs 14 are formed by rolling a steel plate with the thickness of 10 mm.
The support steel pipe 15 is a steel pipe having a diameter of 48 mm.
The steel pipe assembling frame 16 comprises 9 assembling frame ring pipes 17, the assembling frame ring pipes 17 are arranged in a rectangular shape at uniform intervals, and the adjacent assembling frame ring pipes 17 are firmly connected through an assembling frame connecting plate 28; the pipe wall of the splicing ring pipe 17 is provided with threads connected with a pressing plate fastening bolt 18. The splicing frame connecting plate 28 is formed by rolling a steel plate with the thickness of 10 mm.
The splicing ring pipe 17 is formed by rolling a steel pipe with the diameter of 60mm and is vertically welded with the splicing frame connecting plate 28.
The pressing plate fastening bolt 18 is formed by rolling a screw rod with the diameter of 30mm, a steel pipe pressing plate 19 is arranged at the end of the inserted and spliced annular pipe 17, and the pressing plate fastening bolt is connected with the steel pipe pressing plate 19 through a plate side connecting groove 29.
The steel pipe pressing plate 19 is formed by rolling a steel plate with the thickness of 10 mm.
The column tube connecting rib 20 is a steel tube with the diameter of 100 mm. The plate-side connecting grooves 29 have a diameter of 40mm and a depth of 20 mm.
The supporting top beam 21 adopts a Bailey beam.
The lacing wire counter pressing plate 22 is formed by rolling a steel plate with the thickness of 20mm, is arranged in the middle of the supporting top beam 21 and is connected with the supporting top beam 21 in a welding mode.
The fastening lacing wire 23 adopts a prestressed screw rod with the diameter of 30 mm.
Claims (4)
1. Cast-in-place box girder large segment supporting structure, its characterized in that: comprises a position control sleeve (3), a stiff support column (6), a support column connecting rib (10), a support steel pipe (15), a steel pipe assembling frame (16) and a support top beam (21); the position control sleeve (3) and the connecting support pier (4) are firmly connected with the hardened ground (1); the weight bag body (5) is positioned at the bottom of the stiff support column (6), the bottom of the stiff support column (6) is positioned in the position control sleeve (3), and the column bottom plug block (7) is positioned in a gap between the stiff support column (6) and the position control sleeve (3); the support column connecting hoop (8) is sleeved outside the stiff support column (6), column side connecting grooves (9) are formed in the support column connecting hoop (8), support column connecting ribs (10) are arranged between the column side connecting grooves (9) opposite to each other in a mirror image mode, and the support column connecting ribs (10) are connected and fastened with the column side connecting grooves (9) through connecting rib plug blocks (11); a brace connecting rod (12) is arranged between the opposite brace connecting hoop (8) and the connecting brace (4); a pier side hoop (13) is arranged on the periphery of the poured bridge pier stud (2), and a hoop side connecting rib (14) on the outer side of the pier side hoop (13) is connected with an adjacent stud side connecting groove (9) through a strut connecting rib (10); the support steel pipe (15) sequentially penetrates through a splicing frame ring pipe (17) of the steel pipe splicing frame (16), the splicing frame ring pipe (17) is connected with a pressing plate fastening bolt (18), and the pressing plate fastening bolt (18) is tightly attached to the outer wall of the support steel pipe (15) through a steel pipe pressing plate (19); the support steel pipes (15) are positioned between the stiff support columns (6), and the support steel pipes (15) are firmly connected with the stiff support columns (6) through column pipe connecting ribs (20); the top surfaces of the stiff support columns (6) and the support steel pipes (15) are equal in height, and support top beams (21) are arranged at the top ends of the stiff support columns (6) and the support steel pipes (15); a lacing bar counter pressing plate (22) is arranged inside the supporting top beam (21), and a fastening lacing bar (23) is arranged between the lacing bar counter pressing plate (22) and the pier side hoop (13).
2. The cast-in-place box girder large section support structure according to claim 1, wherein: the weight bag body (5) comprises a wrapping cloth bag (24) and a cloth bag filling body (25); the wrapping cloth bag (24) is formed by sewing geotextile, and the cloth bag filling body (25) is made of medium-coarse sand material; the stiff stay column (6) is formed by rolling a steel pipe; the brace connecting hoop (8) is formed by rolling a steel plate, the cross section of the brace connecting hoop is circular, the inner diameter of the brace connecting hoop is the same as the outer diameter of the stiff brace (6), the brace connecting hoop (8) comprises two brace side hoop plates (26) with the same shape, and a brace side connecting groove (9) is welded on the outer side of each brace side hoop plate (26); the column side connecting groove (9) is formed by rolling a steel plate, is U-shaped in cross section and is welded with the column side hoop plate (26); the brace connecting rib (10) is formed by rolling a steel plate, the cross section of the brace connecting rib is U-shaped, and two ends of the brace connecting rib are embedded into the column side connecting grooves (9); the support column connecting rod (12) comprises a nut and a screw rod, the fastening directions of the screw rods on the two sides of the nut are opposite, and the two ends of the nut are respectively connected with the connecting support pier (4) and the support column connecting hoop (8) which are connected through a connecting rod rotating hinge (27).
3. The cast-in-place box girder large section support structure according to claim 1, wherein: the steel pipe assembling frame (16) comprises 4-9 assembling frame ring pipes (17), the assembling frame ring pipes (17) are arranged at equal intervals in a rectangular shape, and the adjacent assembling frame ring pipes (17) are firmly connected through an assembling frame connecting plate (28); the pipe wall of the frame splicing ring pipe (17) is provided with threads connected with a pressure plate fastening bolt (18); the pressing plate fastening bolt (18) is formed by rolling a screw rod, a steel pipe pressing plate (19) is arranged at the end of the inserting and assembling frame ring pipe (17) and is connected with the steel pipe pressing plate (19) through a plate side connecting groove (29).
4. The cast-in-place box girder large section support structure according to claim 1, wherein: the lacing wire counter pressure plate (22) is arranged at the top or the middle part of the supporting top beam (21) and is connected with the supporting top beam (21) in a binding manner or in a welding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790086.8U CN215289719U (en) | 2021-04-16 | 2021-04-16 | Cast-in-place box girder large-segment support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790086.8U CN215289719U (en) | 2021-04-16 | 2021-04-16 | Cast-in-place box girder large-segment support structure |
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| Publication Number | Publication Date |
|---|---|
| CN215289719U true CN215289719U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120790086.8U Active CN215289719U (en) | 2021-04-16 | 2021-04-16 | Cast-in-place box girder large-segment support structure |
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| Country | Link |
|---|---|
| CN (1) | CN215289719U (en) |
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2021
- 2021-04-16 CN CN202120790086.8U patent/CN215289719U/en active Active
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