阅读说明：本技术 一种装配式uhpc管涵结构 (Assembled UHPC pipe culvert structure ) 是由 段晓伟 白龙 艾杰 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种装配式UHPC管涵结构,包括：预制管节,所述预制管节下方设有基础垫层,相邻两个所述预制管节之间的管节接头处外侧由双层沥青油毛毡围裹,内侧用水泥砂浆抹面、中间空隙由沥青麻絮填塞；所述预制管节与基础垫层两侧均设有夯实区；所述预制管节采用UHPC材料。其结构设计合理,充分发挥UHPC材料高强度的性能,为纯混凝土结构,省去了钢筋定位绑扎工序,预制简单便捷。(The invention discloses an assembled UHPC pipe culvert structure, which comprises: the pipe joint comprises prefabricated pipe joints, wherein a foundation cushion is arranged below the prefabricated pipe joints, the outer sides of pipe joint joints between every two adjacent prefabricated pipe joints are surrounded by double-layer asphalt felt, the inner sides of the pipe joint joints are coated by cement mortar, and a middle gap is filled by asphalt bast fibers; tamping areas are arranged on the two sides of the prefabricated pipe joints and the foundation cushion layer; the prefabricated pipe joint is made of UHPC materials. The structural design is reasonable, the high-strength performance of the UHPC material is fully exerted, the UHPC composite material is of a pure concrete structure, the steel bar positioning and binding process is omitted, and the prefabrication is simple and convenient.)

1. An assembled UHPC pipe culvert structure, characterized by, includes: the pipe joint comprises prefabricated pipe joints (1), wherein a foundation cushion (2) is arranged below each prefabricated pipe joint (1), the outer side of a pipe joint between every two adjacent prefabricated pipe joints is surrounded by a double-layer asphalt felt (4), the inner side of the pipe joint is coated by cement mortar, and a middle gap is filled by asphalt bast fibers (3);

the two sides of the prefabricated pipe joint (1) and the foundation cushion layer (2) are respectively provided with a tamping area (5);

the prefabricated pipe joint (1) is made of UHPC material.

2. The fabricated UHPC pipe culvert structure of claim 1, wherein: the prefabricated pipe joint (1) is a hollow round pipe body.

3. The fabricated UHPC pipe culvert structure of claim 1, wherein: the foundation pad (2) is a gravel foundation (6).

Technical Field

The invention relates to the technical field of culvert channel construction, in particular to an assembled UHPC pipe culvert structure.

Background

The culvert structure is an important structure in road engineering. The main function is to discharge the water flow on the ground or to facilitate the passage of people, livestock and vehicles. The culverts and the passages have the characteristics of large quantity and wide distribution in the highway range of China, and the quality of the culverts and the passages directly influences the stability of the structure and the driving safety.

The traditional reinforced concrete pipe culvert and the steel corrugated pipe culvert are wide in application due to simple structure and convenient construction, but have poor durability in strong freezing and thawing and strong corrosion environments. The UHPC material has super-strong durability and can be widely applied to the environment.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an assembled UHPC pipe culvert structure which is reasonable in structural design, fully exerts the high-strength performance of UHPC materials, is a pure concrete structure, omits a steel bar positioning and binding process and is simple and convenient to prefabricate.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that:

an assembled UHPC pipe culvert structure, comprising: the pipe joint comprises prefabricated pipe joints, wherein a foundation cushion is arranged below the prefabricated pipe joints, the outer sides of pipe joint joints between every two adjacent prefabricated pipe joints are surrounded by double-layer asphalt felt, the inner sides of the pipe joint joints are coated by cement mortar, and a middle gap is filled by asphalt bast fibers;

tamping areas are arranged on the two sides of the prefabricated pipe joints and the foundation cushion layer;

the prefabricated pipe joint is made of UHPC materials.

Preferably, the prefabricated pipe section is a hollow round pipe body.

Preferably, the foundation pad is a gravel foundation.

The invention has the beneficial effects that:

structural design is reasonable, and the performance of full play UHPC material high strength is for pure concrete structure, has saved reinforcing bar location ligature process, and it is simple convenient to prefabricate. The UHPC material is adopted, so that the durability is good, and the UHPC material can be widely applied to special environments with strong freeze thawing and strong corrosion.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the joint treatment of the pipe joint of the present invention;

FIG. 3 is a schematic structural view of the joint treatment of the pipe joint of the present invention;

reference symbol comparison table:

1-prefabricated pipe joints, 2-foundation cushion layers, 3-asphalt batting, 4-asphalt felt, 5-tamping areas and 6-gravel foundation.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1 to 3, an assembled UHPC pipe culvert structure includes: the pipe joint comprises prefabricated pipe joints 1, wherein a foundation cushion layer 2 is arranged below each prefabricated pipe joint 1, the outer side of a pipe joint between every two adjacent prefabricated pipe joints is surrounded by a double-layer asphalt felt 4, the inner side of the pipe joint is coated by cement mortar, and a middle gap is filled by asphalt bast fibers 3;

the two sides of the prefabricated pipe joint 1 and the foundation cushion layer 2 are both provided with tamping areas 5;

the prefabricated pipe joint 1 is made of UHPC material.

The prefabricated pipe joint 1 is a hollow round pipe body.

The foundation underlay 2 is a gravel foundation 6.

Pipe culvert structure size table

1. Prefabrication production:

the unit of prefabrication of the invention is a pipe joint, and the prefabrication process comprises the following steps: template assembly → application of release agent → pouring of concrete → vibration → steam curing → removal of the template, marking → hoisting to storage area → delivery.

2. Assembling on site:

after the site gravel foundation is finished, hoisting the prefabricated pipe joints 1 and the foundation cushion 2, positioning and installing, and then backfilling the roadbed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.