CN110804949A

CN110804949A - Pouring method for filler in anchoring area of expansion joint

Info

Publication number: CN110804949A
Application number: CN201911066244.9A
Authority: CN
Inventors: 郑敏霞; 赵强; 汤嵩; 王庆雄
Original assignee: Nanjing Maole Engineering Materials Co Ltd
Current assignee: Nanjing Maole Engineering Materials Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-02-18
Also published as: WO2021088394A1

Abstract

The invention discloses a pouring method of a filler in an anchoring area of an expansion joint, which comprises the following steps: preparing an expansion joint reinforcement cage; c60 mortar is poured; vibrating; pouring concrete; and (6) vibrating. The invention has the advantages that the lower part of the displacement box of the telescopic device is easy to vibrate and compact, and the service life of the telescopic device is prolonged.

Description

Pouring method for filler in anchoring area of expansion joint

Technical Field

The invention belongs to the technical field of bridge expansion devices, and particularly relates to a pouring method of filler in an anchoring area of an expansion joint.

Background

At the present stage, large-span bridges are constructed more in the field of engineering construction in China, higher requirements are put on the durability of the bridges, the expansion joints attached to the bridges play a role in being inconspicuous, and the using durability of the bridges is directly influenced by the advantages and disadvantages of the expansion devices. At present, because of the wide and shallow reservation of the large displacement expansion device notch, when pouring C50 steel fiber concrete (or polypropylene concrete), the lower part of the expansion device displacement box is difficult to vibrate densely because of the objective reasons of small concrete slump, poor fluidity and the like, the concrete coarse aggregate is difficult to enter the bottom of the displacement box, even the concrete condition does not exist at the lower part of the displacement box, and the project operation process is caused, the expansion device is under the repeated action of dynamic load, the cavity or even the void phenomenon appears at the bottom of the displacement box, the service life of the expansion device is influenced, various risks come with the expansion device, and the expansion device rapidly spreads to cause irreversible damage.

In view of this, a method for ensuring that the filler at the lower part of the displacement box of the telescopic device can be poured compactly, prolonging the service life of the telescopic device and reducing the maintenance cost is urgently needed.

Disclosure of Invention

In order to solve the problems that the lower part of the expansion device displacement box is difficult to vibrate compactly, the service life is influenced, and the maintenance cost is high, the invention provides a pouring method of a filler in an anchoring area of an expansion joint.

The invention relates to a pouring method of a filler for an anchoring area of an expansion joint, which comprises the following steps:

preparing an expansion joint steel bar framework;

secondly, pouring C60 mortar;

(III) vibrating;

(IV) pouring concrete;

and (V) vibrating.

Preferably, in the step (two), C60 mortar is poured to the middle part of the telescopic device displacement box.

Preferably, in the step (four), the concrete is selected from any one of C50 steel fiber concrete, polypropylene concrete, epoxy resin concrete and quick-dry concrete.

Has the advantages that: according to the invention, a process for pouring C60 mortar is added before the existing pouring process, so that the C60 mortar enters the lower part of the telescopic device displacement box and is easy to vibrate and compact, and the service life is prolonged; c60 mortar is poured into the middle of the expansion device displacement box, and the mortar quickly enters the bottom of the displacement box after being vibrated by utilizing the characteristics of good fluidity, good workability and the like of the mortar, so that the bottom is effectively filled, and the labor, the material resources and the time are saved; the concrete is any one of C50 steel fiber concrete, polypropylene concrete, epoxy resin concrete and quick-dry concrete, so that the strength of the concrete is improved, and the drying of the concrete is accelerated.

Drawings

FIG. 1 is a sequence diagram of a casting process according to the present invention;

in the figure, 1, a first pouring area; 2. a telescoping device displacement box; 3. and (5) pouring the area for the second time.

Detailed Description

The technical solution of the present invention is described in detail by the following examples, but the scope of the present invention is not limited to the examples.

Example 1

The pouring method of the filler for the anchoring area of the expansion joint comprises the following steps:

preparing an expansion joint steel bar framework;

secondly, pouring C60 mortar to the middle part of the displacement box of the expansion device;

(III) vibrating;

fourthly, pouring C50 steel fiber concrete;

and (V) vibrating.

In the actual operation process, the expansion joint steel reinforcement framework is welded, then concrete is poured in two times, the middle part of the C60 early strength and high strength mortar displacement box is poured, the mortar can quickly enter the bottom of the displacement box after being vibrated by utilizing the characteristics of good fluidity, good workability and the like of the mortar, and the bottom is effectively filled; then the concrete pouring of the steel fiber of the expansion joint C50 is carried out, and the concrete pouring of the expansion joint is completed after vibration, thus effectively ensuring the engineering quality.

Example 2

Casting was performed in the same manner as in example 1, except that the C50 steel fiber concrete in step (iv) was changed to epoxy resin concrete in example 1.

Example 3

Casting was performed in the same manner as in example 1, except that the C50 steel fiber concrete in step (iv) was changed to quick-dry concrete in example 1.

As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A pouring method of filler in an anchoring area of an expansion joint is characterized by comprising the following steps:

preparing an expansion joint steel bar framework;

secondly, pouring C60 mortar;

(III) vibrating;

(IV) pouring concrete;

and (V) vibrating.

2. The method for casting the filler at the anchoring area of the expansion joint as claimed in claim 1, wherein in the second step, C60 mortar is cast to the middle part of the displacement box of the expansion device.

3. The method for casting the filler at the anchoring area of the expansion joint as claimed in claim 1, wherein in the step (IV), the concrete is selected from any one of C50 steel fiber concrete, polypropylene concrete, epoxy resin concrete and fast dry concrete.