CN218116172U

CN218116172U - Pre-buried mould of bridge bottom access hole apron embedded bolt

Info

Publication number: CN218116172U
Application number: CN202222664600.0U
Authority: CN
Inventors: 么贵生; 刘恩良; 陈玉琴
Original assignee: China 22MCC Group Corp Ltd
Current assignee: China 22MCC Group Corp Ltd
Priority date: 2022-07-20
Filing date: 2022-10-11
Publication date: 2022-12-23
Anticipated expiration: 2032-10-11
Also published as: CN114991019A

Abstract

The utility model provides a bridge bottom access hole apron embedded bolt's pre-buried mould relates to construction formwork technical field. After the concrete is formed, the upper surfaces of the sleeve and the steel plate are poured in the concrete and are tightly connected with the concrete. And after the bottom template is removed, the embedded bolts fall down, and the bottom ends of the embedded bolts extend out of the bolt holes and are used for installing the cover plate. Through the utility model discloses, need not drill on the die block board, avoid the die block board of pre-buried bolt position to leak thick liquid to improved the construction quality and the pleasing to the eye degree of roof beam body concrete, and avoided the template to be destroyed, increased template turnover number of times, extension template life. And be provided with horizontal pole and vertical pole, accomplish at the buried bolt construction of pre-buried, when using the nut to carry out apron installation, because horizontal pole and vertical pole offset, can not drive buried bolt of pre-buried when consequently rotating the nut and rotate together.

Description

Pre-buried mould of bridge bottom access hole apron embedded bolt

Technical Field

The utility model relates to a construction formwork technical field especially relates to a bridge bottom access hole apron embedded bolt's pre-buried mould.

Background

Along with the development of society, the bridge is more and more, and in order to guarantee the safe use of bridge, maintenance unit often sends the people and enters into the internal portion of roof beam from the access hole of bridge, inspects the bridge situation, and maintains. The manway of a bridge is usually provided at the bottom of the girder. Before the maintenance, open the apron and get into the internal portion of roof beam, overhaul the back and install the apron in the roof beam body bottom through the bolt, seal the access hole.

In the construction process, the traditional method of embedding the bolts is to open holes in a bottom template of the beam body, the bolts extend out of the beam body through the holes in the template, and then concrete is poured. The method has two defects, namely, the template is damaged by opening the holes, and the service life of the template is shortened; secondly, in the process of beam concrete pouring, the phenomena of slurry leakage and the like easily occur at the opening position of the template, and the appearance of the beam concrete is influenced. Therefore, a new construction method of embedded bolts is needed to avoid the above drawbacks.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a bridge bottom access hole apron embedded bolt's pre-buried mould to solve above-mentioned problem.

Based on the above purpose, the utility model provides a bridge bottom access hole apron embedded bolt's pre-buried mould, include: the die comprises a bottom template, side templates, annular plates and sleeves; the side form board is cylindrical structure, and the side form board is connected on the die block board, and the cover is equipped with the annular slab on the side form board, and the annular slab is connected with the die block board, has seted up the bolt hole on the annular slab, wears to be equipped with embedded bolt in the bolt hole, and the embedded bolt top is covered with the sleeve, and the sleeve top is sealing structure, and the sleeve bottom is connected with the annular slab.

Compared with the prior art, the beneficial effects of the utility model reside in that: after the concrete is formed, the sleeve and the upper surface of the annular plate are poured in the concrete and are tightly connected with the concrete. And after the bottom template is removed, the embedded bolts fall down, and the bottom ends of the embedded bolts extend out of the bolt holes and are used for installing the cover plate. Through the utility model discloses, need not drill on the die block board, avoid the die block board of pre-buried bolt position to leak thick liquid to improved the construction quality and the pleasing to the eye degree of roof beam body concrete, and avoided the template to be destroyed, increased template turnover number of times, extension template life.

Further, still include horizontal pole and vertical pole, horizontal pole and vertical pole all set up in the sleeve, and the horizontal pole is connected on the bolt cap of buried bolt in advance, and the vertical pole is connected on the annular plate of buried bolt one side in advance, and the vertical pole supports with horizontal pole end part mutually. When the construction of the embedded bolt is completed and the nut is used for installing the cover plate, the transverse rod is abutted to the longitudinal rod, so that the embedded bolt cannot be driven to rotate together when the nut is rotated.

Drawings

Fig. 1 is a schematic view of installation of a side template in a construction method of a pre-buried bolt of a bridge bottom manhole cover plate provided by the embodiment of the utility model;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram of an installation of a ring plate in a construction method of a pre-buried bolt of a manhole cover plate at the bottom of a bridge according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a schematic view of a longitudinal bar installation of the construction method of the pre-buried bolt of the manhole cover plate at the bottom of the bridge provided by the embodiment of the utility model;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 5;

fig. 7 is a cross bar installation schematic view of a construction method of a bridge bottom manhole cover plate embedded bolt provided by the embodiment of the utility model;

FIG. 8 is a cross-sectional view taken at D-D of FIG. 7;

fig. 9 is a schematic view of a sleeve installation of a construction method of a pre-buried bolt of a bridge bottom manhole cover plate provided by the embodiment of the utility model;

FIG. 10 is a cross-sectional view taken at E-E of FIG. 9;

fig. 11 is a schematic view of the installation of the cover plate of the construction method of the pre-buried bolt of the cover plate of the manhole at the bottom of the bridge provided by the embodiment of the utility model;

fig. 12 is a sectional view taken along line F-F in fig. 11.

Labeled in the figure as: 1. a beam body top plate; 2. a beam body bottom plate; 3. a cylindrical sideform; 4. an annular plate; 5. bolt holes; 6. embedding bolts in advance; 7. a cross bar; 8. a longitudinal bar; 9. a sleeve; 10. a bottom template; 11. and a cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments.

The utility model provides a pair of bridge bottom access hole apron embedded bolt's pre-buried mould comprises die block board 10, side form 3, annular slab 4, sleeve 9, horizontal pole 7 and vertical pole 8 etc.. When the bridge is constructed, the bridge comprises a beam top plate 1 above and a beam bottom plate 2 below, and the bottom template 10 is a template for constructing the beam bottom plate 2. The side template 3 is a cylindrical structure and is used for reserving an access hole. The side form 3 is connected on the die block board 10, and the cover is equipped with the annular slab 4 on the side form 3, and the annular slab 4 is connected with the die block board 10, has seted up bolt hole 5 on the annular slab 4, wears to be equipped with embedded bolt 6 in the bolt hole 5, and the embedded bolt 6 top is covered with sleeve 9, and sleeve 9 top is sealing structure, and sleeve 9 bottom is connected with the annular slab 4. Horizontal pole 7 and vertical pole 8 all set up in sleeve 9, and horizontal pole 7 is connected on the bolt cap of buried bolt 6 in advance, and vertical pole 8 is connected on the annular plate 4 of buried bolt 6 one side in advance, and vertical pole 8 offsets with 7 tip of horizontal pole. When the construction of the embedded bolt 6 is completed and the nut is used for installing the cover plate 11, the transverse rod 7 is abutted to the longitudinal rod 8, so that the embedded bolt 6 cannot be driven to rotate together when the nut is rotated.

When the construction of the embedded bolts of the access hole cover plate at the bottom of the bridge is carried out, the method comprises the following steps:

s1, as shown in figures 1 and 2, a bottom formwork 10 is installed, side formworks 3 are connected to the bottom formwork 10, seams between the bottom formwork 10 and the side formworks 3 are tight, and concrete is prevented from flowing into the side formworks 3 and affecting the forming of an access hole. The installation positions of the bottom formworks 10 and the side formworks 3, the elevations of the side formworks 3, the sizes of the side formworks 3 and the like are all set according to actual design requirements and construction specifications.

S2, manufacturing the annular plate 4 by using a steel plate, wherein the inner diameter of the annular plate 4 is matched with the outer diameter of the side template 3. Bolt holes 5 are drilled in the annular plate 4, the bolt holes 5 are evenly distributed, and the positions of the bolt holes 5 and the diameters of the holes are set according to construction requirements. As shown in fig. 3 and 4, the ring plate 4 is fitted over the side form 3, and the ring plate 4 is fixedly connected to the bottom form 10.

S3, as shown in fig. 5 and 6, the vertical bar 8 is connected to the annular plate 4 on the bolt hole 5 side. In this embodiment, the vertical bar 8 is made of HPB steel bars with a diameter of 6mm, the vertical bar 8 is about 610mm longer than the embedded bolts, when the embedded bolts 6 are installed in the bolt holes 5, the clear distance between the vertical bar 8 and the bolt caps of the embedded bolts 6 is about 5mm, and the vertical bar 8 is welded to the annular plate 4 near each bolt hole 5.

And S4, as shown in FIGS. 7 and 8, connecting a cross rod 7 to the bolt cap of each embedded bolt 6, installing the embedded bolt 6 in the bolt hole 5, and enabling the end part of the cross rod 7 to abut against the vertical rod 8. In this embodiment, a HPB steel bar with a diameter of 6mm is selected to manufacture the cross bar 7, the length of the cross bar 7 is greater than or equal to 2d +5mm, wherein d is a distance from the center of the longitudinal bar 8 to the center of the bolt cap, two ends of the cross bar 7 respectively extend out of the bolt cap, and the length of each end extending out of the bolt cap is greater than or equal to 10mm.

And S5, as shown in figures 9 and 10, covering sleeves 9 above the embedded bolts 6, the cross rods 7 and the longitudinal rods 8, welding the sleeves 9 on the annular plate 4, ensuring tight welding of the sleeves 9 and the annular plate 4, and preventing concrete from flowing into the sleeves 9 in the subsequent concrete pouring process. In this embodiment, the sleeve 9 is made of a steel pipe with an inner diameter of L +5mm, the length of the steel pipe is approximately equal to the length of the vertical rod 8, the steel plate is cut into a circular shape, and the steel pipe is welded to the top of the steel pipe to tightly seal the top of the steel pipe.

And S6, pouring concrete and constructing the beam body bottom plate 2, and removing the bottom template 10 and the side templates 3 after the concrete is formed and the strength meets the design requirement. After the bottom template 10 is removed, the bottom of the embedded bolt 6 loses support, so that the embedded bolt 6 falls, the bottom end of the embedded bolt 6 extends out of the bolt hole 5, and the construction of the embedded bolt 6 is completed. As shown in fig. 11 and 12, the cover plate 11 is mounted by aligning the mounting holes of the cover plate 11 with the embedded bolts 6 and fastening them with nuts, and the access opening is closed.

Consequently, through this mould, need not drill on the die block board 10, avoid the die block board 10 of pre-buried bolt 6 positions to leak thick liquid to improved the construction quality and the pleasing to the eye degree of roof beam body concrete, and avoided the template to be destroyed, increased template turnover number of times, extension template life.

The embodiments of the invention are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. Bridge bottom access hole apron embedded bolt's pre-buried mould includes: the die comprises a bottom template, side templates, annular plates and sleeves; it is characterized in that the preparation method is characterized in that,

the side form board is cylindrical structure, and the side form board is connected on the die block board, and the cover is equipped with the annular slab on the side form board, and the annular slab is connected with the die block board, has seted up the bolt hole on the annular slab, wears to be equipped with embedded bolt in the bolt hole, and the embedded bolt top is covered with the sleeve, and the sleeve top is sealing structure, and the sleeve bottom is connected with the annular slab.

2. The embedded die for the embedded bolts of the bridge bottom access hole cover plate is characterized by further comprising a transverse rod and a longitudinal rod, wherein the transverse rod and the longitudinal rod are arranged in the sleeve, the transverse rod is connected to a bolt cap of the embedded bolt, the longitudinal rod is connected to an annular plate on one side of the embedded bolt, and the longitudinal rod is abutted to the end of the transverse rod.