CN219671360U

CN219671360U - Port foundation pit structure

Info

Publication number: CN219671360U
Application number: CN202320484043.6U
Authority: CN
Inventors: 徐超尘; 付硕; 赵伟群
Original assignee: Ningbo Branch Cccc No3 Harbor Engineering Co ltd; CCCC Third Harbor Engineering Co Ltd
Current assignee: Ningbo Branch Cccc No3 Harbor Engineering Co ltd; CCCC Third Harbor Engineering Co Ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-09-12
Anticipated expiration: 2033-03-14

Abstract

The utility model relates to the technical field of foundation pit construction, and particularly discloses a port foundation pit structure, which comprises an excavation area, wherein a riverbed is arranged on one side of the excavation area, a retaining wall bottom plate is arranged below the excavation area, a reinforcing bottom pile is arranged on the lower surface of the retaining wall bottom plate, a wall body is arranged above the retaining wall bottom plate, front wall filling is arranged on one side of the retaining wall bottom plate, which is close to the riverbed, rear wall filling is arranged on the other side of the retaining wall bottom plate, the wall body is formed by a plurality of groups of tapping wallboards, a bottom plate positioning groove is formed in the upper surface of the retaining wall bottom plate, and wallboard clamping grooves are formed in the upper surface of the tapping wallboards. Utilize the earth of excavation region as the enclosing structure of construction stage, furthest utilizes the advantage in original place, carries out the segmentation with backfill soil and packs, can form the construction platform in the course of working, reduces the construction degree of difficulty, and the fashioned back wall of backfilling is filled with soil and preceding wall is filled with soil simultaneously and has guaranteed the stability of the concrete of pouring in the wall body in the work progress.

Description

Port foundation pit structure

Technical Field

The utility model relates to the technical field of foundation pit construction, in particular to a port foundation pit structure.

Background

The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation. The method of releasing the side slope can be used by the person with non-deep excavation, so that the soil slope is stable, the gradient is determined according to relevant construction regulations, and when the pit is excavated at the port position, the pressure of the river bed is easily received at the position of the excavated pit to cause the collapse danger.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a port foundation pit structure, which solves the problems mentioned in the background.

The utility model provides the following technical scheme: including the excavation region, one side of excavation region is provided with the riverbed, the below of excavation region is provided with the barricade bottom plate, the lower surface mounting of barricade bottom plate has the reinforcing foundation pile, the top of barricade bottom plate is provided with the wall, the barricade bottom plate be located be close to one side of riverbed is provided with the front wall and fills earth, the opposite side of barricade bottom plate is provided with the back wall and fills earth.

As still further aspects of the utility model: the wall body comprises multiple groups of tapping wallboards, a bottom plate positioning groove is formed in the upper surface of the bottom plate of the retaining wall, and wallboard clamping grooves are formed in the upper surfaces of the tapping wallboards.

As still further aspects of the utility model: and one side of the rear wall filled with soil is provided with a construction road.

As still further aspects of the utility model: the rear wall filling and the front wall filling are formed by filling soil in the excavated area.

As still further aspects of the utility model: and concrete is poured in the wall body.

As still further aspects of the utility model: and the reinforced bottom piles are fixedly connected with the retaining wall bottom plate.

As still further aspects of the utility model: the tapping wallboard is clamped with the bottom plate positioning groove through the wallboard clamping groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. utilize the earth of excavation region as the enclosing structure of construction stage, furthest utilizes the advantage in original place, carries out the segmentation with backfill soil and packs, can form the construction platform in the course of working, reduces the construction degree of difficulty, and the fashioned back wall of backfilling is filled with soil and preceding wall is filled with soil simultaneously and has guaranteed the stability of the concrete of pouring in the wall body in the work progress.

2. When earthwork is backfilled, the upper surface of the earthwork formed by backfilling is used as a construction platform for pouring concrete into the wall body next time, the interior of the wall body is poured according to different sections in height in a layered mode, and the segmented non-section pouring is completed in a front-back circulating mode according to the retaining wall bottom plate, so that the operation of the equipment during pouring can be facilitated.

Drawings

FIG. 1 is a view showing a retaining wall of a port pit structure;

FIG. 2 is a schematic diagram of a structure of a harbor pit structure;

FIG. 3 is a schematic illustration of excavation of a pit in a harbor pit structure;

FIG. 4 is a schematic illustration of excavation molding of a pit in a harbor pit structure;

fig. 5 is a schematic diagram illustrating the formation of the filling soil in the port pit structure.

In the figure: 1. a retaining wall bottom plate; 2. reinforcing the bottom piles; 3. wall body; 4. filling the rear wall with soil; 5. constructing a road; 6. a river bed; 7. excavating an area; 8. filling soil into the front wall; 101. a bottom plate positioning groove; 102. tapping wallboard; 103. wallboard draw-in groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, this embodiment provides a port foundation pit structure, including excavation region 7, one side of excavation region 7 is provided with riverbed 6, the below of excavation region 7 is provided with barricade bottom plate 1, the lower surface mounting of barricade bottom plate 1 has strengthening foundation pile 2, strengthening foundation pile 2 and barricade bottom plate 1 fixed connection, the top of barricade bottom plate 1 is provided with wall body 3, the inside of wall body 3 has concreted, the one side that is located near riverbed 6 of barricade bottom plate 1 is provided with preceding wall fill 8, the opposite side of barricade bottom plate 1 is provided with back wall fill 4, back wall fill 4 and preceding wall fill 8 are filled by the soil of excavation region 7 and are formed, wall body 3 comprises multiunit branching wallboard 102, the bottom plate constant head tank 101 has been seted up to the upper surface of barricade bottom plate 1, branching wallboard 102 and bottom plate constant head tank 101 joint, the upper surface of branching wallboard 102 has all been seted up wallboard draw-in groove 103, branching wallboard 102 passes through wallboard draw-in groove 103 joint each other, one side of back wall fill 4 is provided with construction 5.

The working principle of the utility model is as follows: the whole excavation construction steps of the foundation pit are as follows, step 1: firstly, excavating an area 7 downwards from a land original site line, excavating the bottom surface as a pier pile foundation construction platform, wherein the distance A from the excavation edge line to the top end of an original dike bank and the slope 1:n of the water side meet the structural safety requirement during construction, and a land reserved area between the excavation area 7 and a riverbed 6 is used as a surrounding structure for foundation pit construction, so that the channel passage is not influenced while the construction is ensured; the slope gradient 1:m on the land side is utilized, (1: the numerical values of n and m in n and 1:m are required to be determined according to the riverbed 6 with different depths) to meet the structural safety requirement during construction, and a construction pavement construction road 5 (the design width is 5 m) is arranged along the edge of the foundation pit and two to three meters away from the foundation pit; step 2: continuing to excavate downwards in the area of the excavated area 7 to form a structure (see figure 4), temporarily storing an earth dumping empty area formed by excavation, wherein the altitude of the bottom of the excavated area is lower than that of the bottom end mechanism of the river bed 6; step 3: the bottom of the second excavation area is used as a construction platform to assemble the reinforced bottom pile 2 and the retaining wall bottom plate 1, a plurality of tapping wallboards 102 are upwards assembled in the bottom plate positioning groove 101 to form a wall body 3, poured concrete of the wall body 3 and a river bed 6 have the same elevation, and the method comprises the following steps: when earthwork is backfilled, the upper surface of the backfilled earthwork is used as a construction platform for pouring concrete into the wall body 3 next time, the interior of the wall body 3 is poured according to different sections in height, the segmented end pouring is completed in a front-back circulating type backfilling mode according to the retaining wall bottom plate 1, the backfilling height is as high as the poured wall body section, the backfilling soil of the previous section is used as a construction plane after the pouring height of the next section reaches the meeting position, a front wall filling 8 and a rear wall filling 4 are formed, and after the concrete in the wall body 3 reaches the strength required by design and the construction of the rear wall filling 4 and the front wall filling 8 is completed, the front wall filling 8 is integrally excavated and cleaned, and the bottom of the excavated earthwork is as high as the river bed 6.

It is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, and further, that the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a harbour foundation pit structure, includes excavation region (7), its characterized in that, one side of excavation region (7) is provided with riverbed (6), the below of excavation region (7) is provided with barricade bottom plate (1), the lower surface mounting of barricade bottom plate (1) has and strengthens end stake (2), the top of barricade bottom plate (1) is provided with wall (3), the one side that is located of barricade bottom plate (1) is close to riverbed (6) is provided with preceding wall fill (8), the opposite side of barricade bottom plate (1) is provided with back wall fill (4).

2. The port foundation pit structure according to claim 1, wherein the wall body (3) is formed by a plurality of groups of tapping wallboards (102), the upper surface of the retaining wall bottom plate (1) is provided with a bottom plate positioning groove (101), and the upper surfaces of the tapping wallboards (102) are provided with wallboard clamping grooves (103).

3. A harbor pit structure according to claim 1, characterized in that the side of the rear wall filling (4) is provided with a construction road (5).

4. A harbor pit structure according to claim 1, characterized in that the rear wall fill (4) and the front wall fill (8) are filled with the soil of the excavated area (7).

5. A harbor pit structure according to claim 1, characterized in that the interior of the wall (3) is concreted.

6. A harbor pit structure according to claim 1, characterized in that the reinforcing foundation piles (2) are fixedly connected with the retaining wall bottom plate (1).

7. The port foundation pit structure according to claim 2, wherein the tapping wallboards (102) are clamped with each other through the wallboard clamping grooves (103), and the tapping wallboards (102) are clamped with the bottom plate positioning grooves (101).