CN219547812U

CN219547812U - Foundation pit supporting device

Info

Publication number: CN219547812U
Application number: CN202223510191.5U
Authority: CN
Inventors: 郑小庆; 李功文; 陈军; 李智芳; 陈义平
Original assignee: Central South Architectural Design Institute Co Ltd
Current assignee: Central South Architectural Design Institute Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-08-18
Anticipated expiration: 2032-12-28

Abstract

The utility model provides a foundation pit supporting device which comprises a retaining wall and a support, wherein the retaining wall is arranged along the periphery of a foundation pit soil body, two ends of the support are connected with the tops of the retaining walls at two sides, and the support is an arch structure beam and is arranged in an upward protruding mode.

Description

Foundation pit supporting device

Technical Field

The utility model relates to the technical field of building structures, in particular to a foundation pit supporting device.

Background

With the high-speed development of social economy in China, deep foundation pit construction of house buildings and municipal works is increasingly performed in urban construction. The foundation pit support is a protection project for ensuring the safety of the surrounding environment of the foundation pit and the construction of an underground structure, and is particularly important for the construction of a deep foundation pit. The conventional deep foundation pit support generally adopts a form of retaining wall and horizontal support, and the horizontal support is generally reinforced concrete beam or steel beam. The horizontal support is required to bear bending moment generated by self weight besides bearing horizontal thrust transmitted by the retaining wall, and the bending moment generated by self weight tends to play a control role on a foundation pit with larger plane width, so that the support section is large, the section utilization rate is low and the manufacturing cost is high.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a foundation pit supporting device aiming at the existing problems, which reduces the cross section of a horizontal support, improves the utilization rate of the support cross section and reduces the construction cost.

Embodiments of the present utility model are implemented as follows:

the embodiment of the utility model provides a foundation pit supporting device which is characterized by comprising retaining walls and supports, wherein the retaining walls are arranged along the periphery of a foundation pit soil body, two ends of each support are connected with the tops of the retaining walls on two sides, and each support is an arch-shaped structural beam and is arranged in an upward protruding mode.

In some alternative embodiments, the support is a plurality of supports disposed at evenly spaced intervals longitudinally along the retaining wall.

In some alternative embodiments, a weight cavity is provided in the support, and the weight cavity is filled with a weight.

In some alternative embodiments, the counterweight cavity is a groove formed in the top surface of the support along the axial direction, and the groove is filled with a counterweight.

In some alternative embodiments, the counterweight is sand or a block or an iron block.

In some alternative embodiments, the support is made of reinforced concrete.

The beneficial effects of the utility model are as follows: the utility model provides a foundation pit supporting device, which is characterized in that a supporting system is designed into an arch shape, so that the stress performance of the supporting system can be obviously improved, the supporting section is reduced, and the manufacturing cost is reduced; the arch supports are internally filled with weights, and horizontal thrust at two ends of the arch supports is adjusted, so that the horizontal thrust at two ends of the arch supports is balanced with horizontal force of soil body acting on the retaining wall, and horizontal deformation of the retaining wall is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of an embodiment of the present utility model;

FIG. 2 is a view in the direction A of FIG. 1;

fig. 3 is a B-direction view of fig. 2.

In the figure, the retaining wall is 1-, the support is 2-, the foundation pit soil body is 3-and the counterweight is 4-.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

As shown in fig. 1-3, a foundation pit supporting device comprises a retaining wall 1 and a support 2, wherein the retaining wall is arranged around a foundation pit soil body 3, two ends of the support are connected with the tops of the retaining walls on two sides, the support is an arch structure beam, and the support is arranged to be protruded upwards.

The arch support is mainly based on axial force under the action of dead weight, is small in vertical deformation under the action of dead weight, forms horizontal thrust at the arch end and is used for balancing the horizontal force of soil body acting on the retaining wall.

In some alternative embodiments, the support is a plurality of supports arranged at even intervals longitudinally along the wall.

In some alternative embodiments, a weight cavity is provided in the support, and the weight cavity is filled with a weight 4, so as to adjust the horizontal thrust at the two ends of the arch-shaped support. The weight of the counterweight can be adjusted according to the displacement of the top of the foundation pit, so that the horizontal thrust at the two ends of the arch support and the horizontal force of the soil body on the retaining wall are balanced, and the horizontal deformation of the retaining wall is reduced.

In some alternative embodiments, the counterweight cavity is a groove formed in the top surface of the support in the axial direction, and the groove is filled with the counterweight.

In some alternative embodiments, the counterweight is sand or a block or block of iron or the like.

In some alternative embodiments, the support is made of reinforced concrete.

The embodiments described above are some, but not all embodiments of the utility model. The detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

Claims

1. The foundation pit supporting device is characterized by comprising a retaining wall and a support, wherein the retaining wall is arranged along the periphery of a foundation pit soil body, two ends of the support are connected with the tops of the retaining walls on two sides, and the support is an arch structure beam and is arranged in an upward protruding mode; the supports are distributed at equal intervals along the longitudinal direction of the retaining wall; a counterweight cavity is arranged in the support, and a counterweight is filled in the counterweight cavity.

2. The foundation pit supporting device according to claim 1, wherein the counterweight cavity is a groove formed in the top surface of the support along the axial direction, and the groove is filled with a counterweight.

3. A foundation pit supporting device according to claim 1 or 2, wherein the counterweight is sand or a block or an iron block.