WO2021088394A1 - Pouring method for filler in anchorage zone of expansion joint - Google Patents

Pouring method for filler in anchorage zone of expansion joint Download PDF

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Publication number
WO2021088394A1
WO2021088394A1 PCT/CN2020/100546 CN2020100546W WO2021088394A1 WO 2021088394 A1 WO2021088394 A1 WO 2021088394A1 CN 2020100546 W CN2020100546 W CN 2020100546W WO 2021088394 A1 WO2021088394 A1 WO 2021088394A1
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Prior art keywords
concrete
pouring
expansion joint
mortar
expansion
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PCT/CN2020/100546
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French (fr)
Chinese (zh)
Inventor
郑敏霞
王庆雄
赵强
汤嵩
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南京毛勒工程材料有限公司
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Publication of WO2021088394A1 publication Critical patent/WO2021088394A1/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints

Definitions

  • the invention belongs to the technical field of bridge expansion devices, and in particular relates to a method for pouring a filling material in an expansion joint anchor area.
  • the present invention provides a method for pouring the filling material in the anchoring area of the expansion joint.
  • the pouring method of the filling material in the anchoring area of the expansion joint of the present invention includes the following steps:
  • step (2) C60 mortar is poured into the middle of the displacement box of the telescopic device.
  • the concrete is selected from any one of C50 steel fiber concrete, polypropylene concrete, epoxy resin concrete, and quick-drying concrete.
  • the present invention adds a C60 mortar pouring process 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, thereby increasing the service life; by pouring the C60 mortar to the telescopic device displacement In the middle of the box, using the characteristics of good fluidity and workability of the mortar, it quickly enters the bottom of the displacement box after vibrating to effectively fill the bottom, thereby saving manpower, material resources and time; by setting the concrete as C50 steel fiber concrete , Any one of polypropylene concrete, epoxy concrete, and quick-drying concrete to increase the strength of concrete and speed up the drying of concrete.
  • Figure 1 is a sequence diagram of pouring using the pouring method of the present invention
  • the pouring method of the filling material in the anchoring area of the expansion joint of the present invention includes the following steps:
  • the expansion joint reinforcement skeleton is welded first, and then the concrete is poured in two times, and the middle of the C60 early-strength high-strength mortar-induced displacement box is poured first, using the characteristics of good fluidity and workability of the mortar, after vibration After pounding, it can quickly enter the bottom of the displacement box to effectively fill the bottom; then the expansion joint C50 steel fiber concrete is poured, and the expansion joint concrete pouring is completed after vibrating, which can effectively guarantee the quality of the project.
  • Example 1 the C50 steel fiber concrete in step (4) was changed to epoxy resin concrete, except that it was poured in the same manner as in Example 1.
  • Example 1 the C50 steel fiber concrete in step (4) was changed to quick-drying concrete, except that it was poured in the same manner as in Example 1.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Road Paving Structures (AREA)

Abstract

The present invention discloses a pouring method for filler in anchorage zone of expansion joint, comprising the following steps: preparing an expansion joint steel frame; pouring C60 mortar; conducting vibrating; pouring concrete; and conducting vibrating. The present invention has the advantages that the lower part of a displacement box of a telescopic device is easily vibrated and compacted, and the service life of the telescopic device is prolonged.

Description

一种伸缩缝锚固区填充物的浇筑方法Method for pouring filling material in anchoring area of expansion joint 技术领域Technical field
本发明属于桥梁伸缩装置技术领域，具体涉及一种伸缩缝锚固区填充物的浇筑方法。The invention belongs to the technical field of bridge expansion devices, and in particular relates to a method for pouring a filling material in an expansion joint anchor area.
背景技术Background technique
现阶段，我国工程建设领域中大跨径桥梁建设较多，对桥梁的耐久性提出更高要求，而作为桥梁附属的伸缩缝，起到不可忽缺的作用，伸缩装置的优劣，直接影响桥梁使用的耐久性。目前，因大位移伸缩装置槽口预留普遍较浅，在浇筑C50钢纤维混凝土(或聚丙烯混凝土)时，因砼坍落度较小、流动性较差等客观原因，导致伸缩装置位移箱下部很难振捣密实，砼粗骨料进入位移箱底部较难，甚至出现位移箱下部没有混凝土状况，导致项目运营过程中，伸缩装置在动载的反复作用下，位移箱底出现空洞甚至脱空现象，影响伸缩装置使用寿命，各种风险随之而来，并快速蔓延，造成不可逆损害。At this stage, there are many large-span bridges in the field of engineering construction in our country, and higher requirements are put forward for the durability of the bridge, and the expansion joints attached to the bridge play an indispensable role. The advantages and disadvantages of the expansion devices directly affect Durability of bridge use. At present, due to the shallow reservation of the large-displacement expansion device notch, when pouring C50 steel fiber concrete (or polypropylene concrete), due to objective reasons such as small concrete slump and poor fluidity, the expansion device displacement box The lower part is difficult to vibrate and compact, and it is difficult for the coarse concrete aggregate to enter the bottom of the displacement box, and even the lower part of the displacement box does not have concrete. As a result, during project operation, the expansion device is subjected to repeated dynamic loads, and the bottom of the displacement box is hollow or even emptied. This phenomenon affects the service life of the telescopic device, and various risks follow and spread rapidly, causing irreversible damage.
鉴于此，迫切需要保证伸缩装置位移箱下部填充物能够浇筑密实，延长伸缩装置使用寿命，降低维护成本的方法。In view of this, there is an urgent need to ensure that the filling material under the displacement box of the telescopic device can be poured compactly, so as to prolong the service life of the telescopic device and reduce the maintenance cost.
发明内容Summary of the invention
为了解决上述伸缩装置位移箱下部很难振捣密实，影响使用寿命，维护成本高的问题，本发明提供一种伸缩缝锚固区填充物的浇筑方法。In order to solve the problems that the lower part of the displacement box of the expansion device is difficult to vibrate and compact, the service life is affected, and the maintenance cost is high, the present invention provides a method for pouring the filling material in the anchoring area of the expansion joint.
本发明所述伸缩缝锚固区填充物的浇筑方法，包括如下步骤：The pouring method of the filling material in the anchoring area of the expansion joint of the present invention includes the following steps:
(一)准备伸缩缝钢筋骨架；(1) Prepare the steel frame of the expansion joint;
(二)浇筑C60砂浆；(2) Pouring C60 mortar;
(三)振捣；(3) Vibration;
(四)浇筑混凝土；(4) Pouring concrete;
(五)振捣。(5) Vibration.
优选地，步骤(二)中，浇筑C60砂浆至伸缩装置位移箱中部。Preferably, in step (2), C60 mortar is poured into the middle of the displacement box of the telescopic device.
优选地，步骤(四)中，混凝土选自C50钢纤维混凝土、聚丙烯混凝土、环氧树脂混凝土、快干混凝土中的任一种。Preferably, in step (4), the concrete is selected from any one of C50 steel fiber concrete, polypropylene concrete, epoxy resin concrete, and quick-drying concrete.
有益效果：本发明通过在现有的浇筑工艺之前增加一个浇筑C60砂浆的工艺，使C60砂浆进入伸缩装置位移箱下部而容易振捣密实，从而提高使用寿命；通过将C60砂浆浇筑至伸缩装置位移箱中部，利用砂浆的流动性佳、和易性好等特点，经振捣后快速进入位移箱底部，对底部进行有效填充，从而节省人力、物力和时间；通过将混凝土设为C50钢纤维混凝土、聚丙烯混凝土、环氧树脂混凝土、快干混凝土中的任一种，提高混凝土强度、加快混凝土变干。Beneficial effects: The present invention adds a C60 mortar pouring process 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, thereby increasing the service life; by pouring the C60 mortar to the telescopic device displacement In the middle of the box, using the characteristics of good fluidity and workability of the mortar, it quickly enters the bottom of the displacement box after vibrating to effectively fill the bottom, thereby saving manpower, material resources and time; by setting the concrete as C50 steel fiber concrete , Any one of polypropylene concrete, epoxy concrete, and quick-drying concrete to increase the strength of concrete and speed up the drying of concrete.
附图说明Description of the drawings
图1为采用本发明的浇筑方法进行浇筑的顺序图；Figure 1 is a sequence diagram of pouring using the pouring method of the present invention;
图中，1、第一次浇筑区；2、伸缩装置位移箱；3、第二次浇筑区。In the figure, 1. The first pouring area; 2. The telescopic device displacement box; 3. The second pouring area.
具体实施方式Detailed ways
下面通过实施例对本发明技术方案进行详细说明，但是本发明的保护范围不局限于所述实施例。The technical solutions of the present invention will be described in detail below through embodiments, but the protection scope of the present invention is not limited to the embodiments.
实施例1Example 1
本发明的伸缩缝锚固区填充物的浇筑方法包括如下步骤：The pouring method of the filling material in the anchoring area of the expansion joint of the present invention includes the following steps:
(一)准备伸缩缝钢筋骨架；(1) Prepare the steel frame of the expansion joint;
(二)浇筑C60砂浆至伸缩装置位移箱中部；(2) Pour C60 mortar to the middle of the displacement box of the expansion device;
(三)振捣；(3) Vibration;
(四)浇筑C50钢纤维混凝土；(4) Pouring C50 steel fiber concrete;
(五)振捣。(5) Vibration.
在实际操作过程中，先将伸缩缝钢筋骨架焊接完成，然后砼分两次浇筑，先浇筑C60早强高强砂浆致位移箱中部，利用砂浆的流动性佳、和易性好等特征，经振捣后可快速进入位移箱底部，对底部进行有效填充；然后再进行伸缩缝C50钢纤维混凝土浇筑，经振捣后完成伸缩缝砼浇筑，这样可以有效保障工程质量。In the actual operation process, the expansion joint reinforcement skeleton is welded first, and then the concrete is poured in two times, and the middle of the C60 early-strength high-strength mortar-induced displacement box is poured first, using the characteristics of good fluidity and workability of the mortar, after vibration After pounding, it can quickly enter the bottom of the displacement box to effectively fill the bottom; then the expansion joint C50 steel fiber concrete is poured, and the expansion joint concrete pouring is completed after vibrating, which can effectively guarantee the quality of the project.
实施例2Example 2
在实施例1中，将步骤(四)中的C50钢纤维混凝土变更为环氧树脂混凝土，除 此以外，以与实施例1相同的方式进行浇筑。In Example 1, the C50 steel fiber concrete in step (4) was changed to epoxy resin concrete, except that it was poured in the same manner as in Example 1.
实施例3Example 3
在实施例1中，将步骤(四)中的C50钢纤维混凝土变更为快干混凝土，除此以外，以与实施例1相同的方式进行浇筑。In Example 1, the C50 steel fiber concrete in step (4) was changed to quick-drying concrete, except that it was poured in the same manner as in Example 1.
如上所述，尽管参照特定的优选实施例已经表示和表述了本发明，但其不得解释为对本发明自身的限制。在不脱离所附权利要求定义的本发明的精神和范围前提下，可对其在形式上和细节上作出各种变化。As mentioned above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details can be made without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims (3)

  1. 一种伸缩缝锚固区填充物的浇筑方法，其特征在于，包括如下步骤：A method for pouring fillings in the anchoring area of expansion joints, which is characterized in that it comprises the following steps:
    (一)准备伸缩缝钢筋骨架；(1) Prepare the steel frame of the expansion joint;
    (二)浇筑C60砂浆；(2) Pouring C60 mortar;
    (三)振捣；(3) Vibration;
    (四)浇筑混凝土；(4) Pouring concrete;
    (五)振捣。(5) Vibration.
  2. 根据权利要求1所述的伸缩缝锚固区填充物的浇筑方法，其特征在于，步骤(二)中，浇筑C60砂浆至伸缩装置位移箱中部。The method for pouring fillers in the anchoring area of expansion joints according to claim 1, wherein in step (2), C60 mortar is poured into the middle of the displacement box of the expansion device.
  3. 根据权利要求1所述的伸缩缝锚固区填充物的浇筑方法，其特征在于，步骤(四)中，混凝土选自C50钢纤维混凝土、聚丙烯混凝土、环氧树脂混凝土、快干混凝土中的任一种。The method for pouring the filling material in the anchoring area of the expansion joint according to claim 1, wherein in step (4), the concrete is selected from any of C50 steel fiber concrete, polypropylene concrete, epoxy resin concrete, and quick-drying concrete. One kind.
PCT/CN2020/100546 2019-11-04 2020-07-07 Pouring method for filler in anchorage zone of expansion joint WO2021088394A1 (en)

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CN110804949A (en) * 2019-11-04 2020-02-18 南京毛勒工程材料有限公司 Pouring method for filler in anchoring area of expansion joint

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KR20170119869A (en) * 2016-04-20 2017-10-30 김윤기 Repair reinforcement method of bridge with a expansion joint
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