CN211947965U

CN211947965U - Cast-in-situ continuous box girder internal mold

Info

Publication number: CN211947965U
Application number: CN201922028313.9U
Authority: CN
Inventors: 齐昌广; 乔文开
Original assignee: Songchuang (shanghai) Business Management Consulting Center
Current assignee: Hangzhou Branch Of Cscec Hengchuang Beijing Technology Development Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-11-17
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to a cast-in-place continuous box girder internal mold, including steel panels, side rib, second bolt, bar steel, vaulting pole, adjustable top support, top rib, spacer bar and first bolt, steel panels sets up on side rib and top rib and through first bolted connection, the side rib is symmetrical arrangement, and the side rib bottom sets up the bar steel and links to each other through the second bolt, side rib and top rib link to each other through first bolt, set up the vaulting pole between the symmetrical side rib, set up the vaulting pole between top rib and bar steel, the vaulting pole both ends set up adjustable top support, the bar steel is rather than the spacer bar threaded connection below; the top end of the side rib is provided with a notch and a first bolt hole, the two ends of the top rib are provided with a convex opening and a first bolt hole, and the notch and the convex opening are mutually spliced and fixed through a first bolt. The utility model has the advantages that: the utility model discloses an centre form fixed position device can be through adjusting nut and spacer bar quantity, accurate control centre form location height and stability.

Description

Cast-in-situ continuous box girder internal mold

Technical Field

The utility model relates to a cast-in-place box girder technical field especially relates to a cast-in-place continuous box girder centre form.

Background

The box girder structure is one of the girders in bridge engineering, is divided into a prefabricated box girder and a cast-in-place box girder, and is increasingly widely applied. The cast-in-place box girder is mainly used for large continuous box girders, the existing box girder construction process is basically mature, a standard construction process is adopted, and a construction support needs to be erected and a template needs to be manufactured during construction. Traditional box girder inner membrance construction mainly adopts the mode of wholly assembling and scattered assembling, and the dismouting is loaded down with trivial details in the work progress, and centre form location is fixed unstably, and when pouring centre form below box girder bottom plate part timesharing, appears the concrete easily and paves not enough, the problem that the vibration is not real.

Therefore, the cast-in-place continuous box girder inner mold which is easy to disassemble and assemble, accurate and stable in positioning and capable of well improving the pouring quality of the bottom plate is important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough among the prior art, provide a cast-in-place continuous box girder centre form.

The cast-in-place continuous box girder internal mold comprises a steel panel, side ribs, second bolts, steel bars, supporting rods, adjustable jacking supports, top ribs, positioning steel bars and first bolts, wherein the steel panel is arranged on the side ribs and the top ribs and connected through the first bolts, the side ribs are symmetrically arranged, the bottom ends of the side ribs are provided with the steel bars and connected through the second bolts, the side ribs and the top ribs are connected through the first bolts, the supporting rods are arranged between the symmetrical side ribs, the supporting rods are arranged between the top ribs and the steel bars, the two ends of each supporting rod are provided with the adjustable jacking supports, and the steel bars are in threaded connection with the positioning steel bars below the supporting rods.

Preferably, the method comprises the following steps: the top end of the side rib is provided with a notch and a first bolt hole, the two ends of the top rib are provided with a convex opening and a first bolt hole, and the notch and the convex opening are mutually spliced and fixed through a first bolt.

Preferably, the method comprises the following steps: evenly set up the second bolt hole on the bar steel, the spacer bar bottom sets up the mortar cushion, and the spacer bar top sets up the screw thread, and the spacer bar passes through the second bolt hole and the nut is connected with the bar steel.

The utility model has the advantages that:

(1) the utility model discloses an centre form fixed position device can be through adjusting nut and spacer bar quantity, accurate control centre form location height and stability.

(2) The utility model relates to a side rib and top rib adapting unit can link soon easily to be dismantled, make things convenient for pouring and the concrete of vibrating of case roof beam bottom plate.

Drawings

FIG. 1 is a cross-sectional view of an internal mold of a cast-in-place continuous box girder;

FIG. 2 is a schematic view of a first casting inner box formwork;

FIG. 3 is a schematic view of a second cast inner box formwork;

FIG. 4 is a schematic view of an inner mold fixing and positioning device;

FIG. 5 is a schematic illustration of a strip steel cloth hole;

FIG. 6 is a schematic view of a side rib and top rib connection member.

Description of reference numerals: 1-a first bolt hole; 2-steel panel; 3-side rib; 4-second bolt; 5-bar steel; 6-stay bar; 7-adjustable jacking; 8-second bolt hole; 9-top rib; 10-a convex opening; 11-a recess; 12-a nut; 13-screw thread; 14-positioning steel bars; 15-mortar cushion block; 16-first bolt.

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.

Cast-in-place continuous box girder centre form, including steel decking 2, side rib 3, second bolt 4, bar 5, vaulting pole 6, adjustable top support 7, top rib 9, positioning reinforcement 14 and first bolt 16, steel decking 2 sets up on side rib 3 and top rib 9 and connects through first bolt 16, side rib 3 is symmetrical arrangement, and 3 bottom of side rib set up bar 5 and link to each other through second bolt 4, side rib 3 and top rib 9 link to each other through first bolt 16, set up vaulting pole 6 between the side rib 3 of symmetry, set up vaulting pole 6 between top rib 9 and bar 5, vaulting pole 6 both ends set up adjustable top support 7, bar 5 and the positioning reinforcement 14 threaded connection of its below.

The top end of the side rib 3 is provided with a notch 11 and a first bolt hole 1, two ends of the top rib 9 are provided with a lug 10 and the first bolt hole 1, and the notch 11 and the lug 10 are mutually spliced and fixed through a first bolt 16.

Evenly set up second bolt hole 8 on the

bar

5, 14 bottoms of positioning bar set up

mortar cushion

15, and 14 tops of positioning bar set up screw thread 13, and positioning bar 14 passes through second bolt hole 8 and nut 12 and is connected with bar 5.

The construction method of the cast-in-situ continuous box girder internal mold comprises the following steps:

the first step is to process the steel panel 2, the side ribs 3 and the top ribs 9 of the inner membrane in advance according to the design size of the box girder inner mould, and assemble the inner mould single side mould and the top mould by utilizing an assembling jig frame in an assembling field.

The second step is that the steel panels 2 are connected by U-shaped clamps, the side ribs 3 and the top rib 9 are connected with the steel panels 2 by first bolts 16, and the joints are prevented from leaking slurry by iron adhesive tapes. The symmetrical inner die side dies are connected with the bar steel 5 through the bottom ends of the side ribs 3 in a bolted mode, the side ribs 3 are combined with the top ribs 9 through the convex openings 10 and the concave openings 11, and the symmetrical inner die side dies are connected and closed through first bolts 16. Then, an inner mold support is built by using a support rod 6. The contact parts of the stay bar 6, the side ribs 3, the bar steel 5 and the top rib 9 are provided with adjustable jacking supports 7 for convenient adjustment, as shown in figure 1.

And thirdly, hoisting the inner mould lacking the top mould to the position above the bottom plate steel bar net by using a crane, and connecting the positioning steel bars 14 with the mortar cushion blocks 15 at the bottom ends with the bar steel 5 through bolting for fixing and positioning the inner mould. The inner mould monomers are connected by bolts, and double faced adhesive tapes are pasted at joints in advance to prevent slurry leakage of the abutted seams. The first casting of the box girder, including casting vibrations of the bottom plate and the web plate, is then performed, as shown in fig. 2.

And fourthly, after concrete pouring of the bottom plate and the web plate of the box girder is completed to a certain degree, hoisting and installing an internal mold top mold, binding top plate reinforcing steel bars, and pouring the box girder for the second time, wherein the top plate and the flange plate of the box girder are included, as shown in fig. 3.

Claims

1. The utility model provides a cast-in-place continuous box girder centre form which characterized in that: including steel decking (2), side rib (3), second bolt (4), bar (5), vaulting pole (6), adjustable top support (7), top rib (9), positioning steel bar (14) and first bolt (16), steel decking (2) set up on side rib (3) and top rib (9) and connect through first bolt (16), side rib (3) are symmetrical arrangement, and side rib (3) bottom sets up bar (5) and links to each other through second bolt (4), side rib (3) and top rib (9) link to each other through first bolt (16), set up vaulting pole (6) between the side rib (3) of symmetry, set up vaulting pole (6) between top rib (9) and bar (5), vaulting pole (6) both ends set up adjustable top support (7), bar (5) are rather than positioning steel bar (14) threaded connection of below.

2. The cast-in-place continuous box girder internal mold according to claim 1, characterized in that: the top end of the side rib (3) is provided with a notch (11) and a first bolt hole (1), two ends of the top rib (9) are provided with a convex opening (10) and the first bolt hole (1), and the notch (11) and the convex opening (10) are mutually spliced and fixed through a first bolt (16).

3. The cast-in-place continuous box girder internal mold according to claim 1, characterized in that: evenly set up second bolt hole (8) on bar steel (5), positioning bar (14) bottom sets up mortar cushion (15), and positioning bar (14) top sets up screw thread (13), and positioning bar (14) are connected with bar steel (5) through second bolt hole (8) and nut (12).