CN219080385U

CN219080385U - Mortise and tenon assembled open caisson

Info

Publication number: CN219080385U
Application number: CN202320166181.XU
Authority: CN
Inventors: 安关峰; 张旭聪; 张蓉
Original assignee: Guangzhou Municipal Group Co ltd
Current assignee: Guangzhou Municipal Group Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-05-26
Anticipated expiration: 2033-02-07

Abstract

The utility model relates to an assembled open caisson, in particular to a mortise and tenon assembled open caisson, which comprises an upper ring open caisson, a middle ring open caisson and a lower ring open caisson, wherein the upper ring open caisson, the middle ring open caisson and the lower ring open caisson comprise a plurality of prefabricated parts and a plurality of cast-in-situ belts, the prefabricated parts and the cast-in-situ belts are surrounded to form a closed strip-shaped body, mortise and tenon joints are adopted among the upper ring open caisson, the middle ring open caisson and the lower ring open caisson, and prestressed steel bars are arranged on the inner side and the outer side of the mortise and tenon assembled open caisson.

Description

Mortise and tenon assembled open caisson

Technical Field

The utility model relates to the technical field of assembly type open caissons, in particular to a mortise and tenon assembled open caisson.

Background

The open caisson is a shaft-shaped structure, and is submerged to a designed elevation after overcoming the friction resistance of the well wall by means of self gravity of the open caisson in a well earth digging mode, and then is subjected to concrete bottom sealing and well hole filling, so that the open caisson becomes a bridge abutment or other structure foundation. The open caisson structure has the advantages of good integrity, high rigidity, high bearing capacity, large depth and the like, and is widely applied to various different types of projects, including projects such as pier foundation pits, water supply and drainage underground structures, large equipment foundations, civil air defense shelters, shield working wells, pipe network working wells, mining area shafts, underground lanes, station hydraulic foundation construction enclosures and the like. The traditional open caisson construction is carried out in a cast-in-place mode, and the open caisson construction needs to be excavated for a long time, so that the construction period of the cast-in-place open caisson construction is long, and if the open caisson construction is located in an urban main road, urban traffic is greatly affected. The open caisson construction is carried out by prefabricated open caisson components in factories and then transported to an assembly technology for connection on site, so that the time for on-site construction can be effectively reduced.

Disclosure of Invention

The utility model aims to provide a mortise and tenon assembled open caisson, which is characterized in that building components and accessories are manufactured in factories, the mortise and tenon assembled open caisson is transported to a building construction site, and finally the mortise and tenon assembled open caisson is assembled and installed on the site in a reliable connection mode, so that the working efficiency of open caisson construction can be effectively improved, the construction cost is reduced, and the construction period is shortened to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a mortise and tenon assembled open caisson, includes ring open caisson, middle ring open caisson and ring open caisson down, go up the ring open caisson middle ring open caisson with ring open caisson down all includes a plurality of prefabricated components and a plurality of cast-in-place area, just prefabricated components with cast-in-place area encloses to establish and forms closed banded body, go up the ring open caisson middle ring open caisson with adopt mortise and tenon joint between the ring open caisson down, prestressing steel bars have been arranged to mortise and tenon assembled open caisson's inside and outside both sides.

Further, the plurality of prefabricated parts includes two U-shaped prefabricated parts and two in-line prefabricated parts.

Further, the cast-in-situ belt is arranged between any one of the U-shaped prefabricated parts and one of the in-line prefabricated parts.

Further, the U-shaped prefabricated part of the upper ring open caisson and the bottom of the straight prefabricated part of the upper ring open caisson are of a straight mortise structure.

Further, the U-shaped prefabricated part of the middle ring open caisson and the straight-shaped prefabricated part of the middle ring open caisson are of a straight-shaped tenon structure at the top and a straight-shaped mortise structure at the bottom.

Further, the U-shaped prefabricated part of the lower ring open caisson and the top of the straight prefabricated part of the lower ring open caisson are of a straight tenon structure.

Further, vertical steel bars and horizontal connecting steel bars of prefabricated components on two sides are arranged in the cast-in-situ belt.

Further, the vertical steel bars arranged in the cast-in-situ belt are distributed in an annular mode and are provided with annular stirrups for welding and fixing.

Further, the cast-in-situ belt structures of the upper ring open caisson, the middle ring open caisson and the lower ring open caisson are the same.

Further, the prestressed reinforcement is symmetrically distributed from the middle to the two sides inside and outside the mortise and tenon-and-mortise assembled open caisson.

The utility model provides a mortise and tenon assembled open caisson, which has the following beneficial effects:

according to the utility model, the building components and accessories are manufactured in a factory, are transported to a building construction site, and are assembled and installed on site in a reliable connection mode, so that the working efficiency of open caisson construction can be effectively improved, the construction cost is reduced, the construction period is shortened, the influence of site construction on the surrounding environment and urban traffic is reduced, the horizontal component connection is realized by means of cast-in-situ belt concrete, the vertical direction is formed by stretching prestressed reinforcement distributed in the vertical direction, and the prefabricated components are combined into a whole through cast-in-situ belts and prestressed reinforcement, so that the integral is stressed jointly, and the integral is better.

Drawings

The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a top cross-sectional view of the present utility model;

FIG. 3 is a mounting angle fixing view;

FIG. 4 is a mortise and tenon structure diagram of the utility model;

fig. 5 is a view showing the construction of the reinforcing steel bar inside the cast-in-place belt.

In the figure: 1. a ring-shaped open caisson is arranged; 2. a middle ring open caisson; 3. setting the open caisson; 4. a U-shaped prefabricated part of the upper ring open caisson; 5. an upper ring open caisson in-line prefabricated part; 6. u-shaped prefabricated parts of the middle ring open caisson; 7. middle ring open caisson straight prefabricated component; 8. a U-shaped prefabricated part of the lower ring open caisson; 9. a straight prefabricated part of the ring-down open caisson; 10. a cast-in-place belt; 11. prestress steel bars; 12. horizontally connecting steel bars; 13. vertical steel bars; 14. annular stirrups; 15. mortise and tenon joints.

Detailed Description

The following examples of the present utility model are described in detail, and are given by way of illustration of the present utility model, but the scope of the present utility model is not limited to the following examples.

The mortise and tenon assembled open caisson comprises an upper annular open caisson 1, an intermediate annular open caisson 2 and a lower annular open caisson 3 as shown in fig. 1, wherein the upper annular open caisson 1, the intermediate annular open caisson 2 and the lower annular open caisson 3 comprise a plurality of prefabricated parts and a plurality of cast-in-situ belts 10, the prefabricated parts and the cast-in-situ belts 10 are enclosed to form a closed strip-shaped body as shown in fig. 2, mortise 15 fit is adopted between the upper annular open caisson 1, the intermediate annular open caisson 2 and the lower annular open caisson 3 as shown in fig. 3, and prestressed steel bars 11 are arranged on the inner side and the outer side of the mortise and tenon assembled open caisson.

The plurality of prefabricated parts in the upper ring open caisson 1 comprise two upper ring open caisson U-shaped prefabricated parts 4 and two upper ring open caisson straight prefabricated parts 5; the plurality of prefabricated parts in the middle ring open caisson 2 comprise two middle ring open caisson U-shaped prefabricated parts 6 and two middle ring open caisson straight prefabricated parts 7; the plurality of prefabricated components in the lower ring open caisson 3 comprise two lower ring open caisson U-shaped prefabricated components 8 and two lower ring open caisson straight prefabricated components 9.

The cast-in-situ belt 10 is arranged between a U-shaped prefabricated part and an in-line prefabricated part end part in any open caisson section.

The bottoms of the upper ring open caisson U-shaped prefabricated part 4 and the upper ring open caisson straight prefabricated part 5 are of a straight mortise structure.

The U-shaped prefabricated part 6 of the middle ring open caisson and the I-shaped prefabricated part 7 of the middle ring open caisson are of a straight tenon structure at the top and a straight mortise structure at the bottom.

The tops of the U-shaped prefabricated part 8 of the lower ring open caisson and the straight prefabricated part 9 of the lower ring open caisson are of a straight tenon structure.

The cast-in-situ belt 10 is internally provided with vertical steel bars 13 and horizontal connecting steel bars 12 of prefabricated components at two sides.

The vertical steel bars 13 arranged in the cast-in-situ belt 10 are distributed in a ring shape and are provided with ring stirrups 14 for welding and fixing, as shown in fig. 5.

The structures of the cast-in-situ belt 10 of the upper ring open caisson 1, the middle ring open caisson 2 and the lower ring open caisson 3 are the same.

The prestressed reinforcement 11 is symmetrically distributed from the middle to the two sides inside and outside the mortise and tenon assembled open caisson.

The utility model will be further described with reference to the following examples:

prefabricating prestress assembly type open caisson components in factories, wherein the open caisson can be divided into three sections in the vertical direction according to site construction requirements and design drawing requirements, the same section of open caisson can be divided into four components for prefabricating, the two components are respectively two U-shaped blocks, the two U-shaped blocks are respectively provided with two I-shaped blocks, the plane layout form of the prestress assembly type open caisson is shown in fig. 2, and the prefabricated open caisson is transported to a construction site.

The lower ring open caisson prefabricated parts are in place, all the prefabricated parts are installed in place according to the positions set by the drawing through the automobile crane and the part carrier vehicle, the U-shaped prefabricated parts are lifted in place in advance, after being installed in place, 4 angle steel can be used for fixing the prefabricated parts, as shown in fig. 3, the installation of the straight-line-shaped prefabricated parts is carried out, and the displacement of the U-shaped prefabricated parts which are lifted in advance in the installation process of the straight-line-shaped prefabricated parts is prevented.

Binding and welding cast-in-situ steel bars of the lower ring open caisson, wherein a cast-in-situ belt is arranged between the U-shaped prefabricated part and the straight prefabricated part, vertical steel bars and horizontal connecting steel bars of the prefabricated parts on two sides are arranged in the cast-in-situ belt, and the cast-in-situ steel bars are bound and welded after the prefabricated parts are installed in place.

The formwork is supported, the cast-in-situ belt concrete of the lower ring open caisson is poured, the cast-in-situ belt formwork of the lower ring open caisson is supported and the concrete pouring construction is carried out after the binding and welding of the cast-in-situ belt steel bar of the lower ring open caisson are completed, the formwork is installed in place and then is reinforced timely, the problems of expansion and the like in the pouring process are avoided, and the casting is carried out uniformly by using a vibrating rod.

After the cast-in-situ section maintenance of the lower ring open caisson is completed, the middle ring open caisson is in place, and the middle ring is matched with the lower ring open caisson and the upper ring open caisson and the middle ring open caisson by adopting concave-convex mortises, and the structural form is shown in figure 4.

The prefabricated part of the middle ring open caisson is in place, binding and welding middle ring cast-in-situ steel bars, and the construction mode is the same as that of the lower ring open caisson.

The prefabricated parts of the upper ring open caisson are in place, bound and welded with the upper ring cast-in-situ steel bars, and the construction mode is the same as that of the lower ring open caisson.

The method comprises the steps of pre-stressing construction, vertically dividing an assembled open caisson into three sections, connecting the three sections through vertical pre-stressing steel bars, taking galvanized metal corrugated pipes as pre-stressing pore channels, arranging the pre-stressing steel bars on the inner side and the outer side of the cross section of a prefabricated part, stretching the single ends of the upper parts symmetrically from the middle to the two sides, mainly controlling stress in the stretching process, arranging grouting holes in the open caisson in a middle ring, grouting construction by adopting a common grouting process, and grouting within 48 hours after stretching.

And (3) supporting the mould, pouring the concrete of the open caisson cast-in-situ belt, and vibrating and compacting by using a vibrating rod through a reserved hole site of the mould in the pouring process, wherein the vibrating rod is required to be inserted and pulled out quickly and slowly during pouring, so that the continuity of construction is ensured, and the middle part of the construction is not required to be interrupted.

And (3) sinking operation construction, namely sinking the open caisson to a design depth by adopting a proper sinking mode according to engineering related design files and geological data, and then cleaning a base layer and sealing the bottom.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by a person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The utility model provides a mortise and tenon assembled open caisson, includes ring open caisson, middle ring open caisson and ring open caisson down, its characterized in that, go up the ring open caisson the middle ring open caisson with ring open caisson down all includes a plurality of prefabricated components and a plurality of cast-in-place area, just prefabricated components with cast-in-place area encloses to establish and forms closed banded body, go up the ring open caisson the middle ring open caisson with adopt mortise and tenon joint down between the ring open caisson, prestressing steel bars have been arranged to the inside and outside both sides of mortise and tenon assembled open caisson.

2. The mortise and tenon-and-tenon assembled open caisson according to claim 1, wherein: the plurality of prefabricated components comprise two U-shaped prefabricated components and two in-line prefabricated components.

3. The mortise and tenon-and-tenon assembled open caisson according to claim 2, characterized in that: the cast-in-situ belt is arranged between any one of the U-shaped prefabricated parts and one of the straight prefabricated parts.

4. The mortise and tenon-and-tenon assembled open caisson according to claim 2, characterized in that: the U-shaped prefabricated part of the upper ring open caisson and the bottom of the straight prefabricated part of the upper ring open caisson are of a straight mortise structure.

5. The mortise and tenon-and-tenon assembled open caisson according to claim 2, characterized in that: the U-shaped prefabricated part of the middle ring open caisson and the straight-shaped prefabricated part of the middle ring open caisson are of a straight-shaped tenon structure at the top and a straight-shaped mortise structure at the bottom.

6. The mortise and tenon-and-tenon assembled open caisson according to claim 2, characterized in that: the U-shaped prefabricated part of the lower ring open caisson and the top of the straight prefabricated part of the lower ring open caisson are of a straight tenon structure.

7. The mortise and tenon-and-tenon assembled open caisson according to claim 1, wherein: and the cast-in-situ belt is internally provided with vertical steel bars and horizontal connecting steel bars of prefabricated components at two sides.

8. The mortise and tenon-and-tenon assembled open caisson according to claim 7, wherein: the vertical steel bars arranged in the cast-in-situ belt are distributed in an annular mode and are provided with annular stirrups for welding and fixing.

9. The mortise and tenon-and-tenon assembled open caisson according to claim 1, wherein: the cast-in-situ belt structures of the upper ring open caisson, the middle ring open caisson and the lower ring open caisson are the same.

10. The mortise and tenon-and-tenon assembled open caisson according to claim 1, wherein: the prestressed reinforcement is symmetrically distributed from the middle to the two sides inside and outside the mortise and tenon-and-mortise assembled open caisson.