CN-224199909-U - Servo supporting device for circular foundation pit

Abstract

The utility model provides a servo supporting device for a circular foundation pit, which comprises a plurality of circular arc supporting beams, a plurality of hydraulic joint boxes, a gap liner layer and a hydraulic pump station, wherein the circular arc supporting beams are circular arc section steel, the plurality of circular arc supporting beams form a supporting circular ring, the supporting circular ring is positioned on the inner side of a circular ground connecting wall, the plurality of hydraulic joint boxes are correspondingly arranged at the connecting positions of the adjacent circular arc supporting beams, each hydraulic joint box is correspondingly connected with the circular arc supporting beams on two sides, the gap liner layer is arranged between the supporting circular ring and the circular ground connecting wall, and the hydraulic pump station is connected with the hydraulic joint boxes. The servo supporting device for the circular foundation pit can provide stable and reliable support for the circular foundation pit, and has the advantages of short construction period, easiness in disassembly and the like.

Inventors

• JIN GUOLONG
• LI HONGQIAO
• TIAN YINXUE
• WANG XUEMEI
• LI KE

Assignees

• 中船第九设计研究院工程有限公司

Dates

Publication Date

20260505

Application Date

20250430

Claims (6)

1. 1. A servo support device for a circular foundation pit, comprising: The arc supporting beams are arc section steel, a plurality of arc supporting beams form a supporting circular ring, and the supporting circular ring is positioned on the inner side of the circular ground continuous wall; The plurality of hydraulic joint boxes are correspondingly arranged at the joints of the adjacent arc supporting beams, and each hydraulic joint box is correspondingly connected with the arc supporting beams at two sides; A gap liner layer arranged between the support ring and the circular ground connecting wall; And the hydraulic pump station is connected with the hydraulic joint box.
2. 2. The servo support device for a circular foundation pit of claim 1, wherein: The hydraulic joint box comprises a box shell, wherein a bidirectional hydraulic oil cylinder is arranged in the box shell and is provided with two piston rods with opposite directions, top plates are fixed at the tail ends of the two piston rods, and the two top plates are respectively connected and fixed with the arc supporting beams on the two sides through bolts.
3. 3. The servo support device for a circular foundation pit of claim 2, wherein: The box shell is of a steel plate shell structure, the box shell is of an arc-shaped cavity, and the cross section of the box shell is rectangular.
4. 4. A servo support device for a circular foundation pit as claimed in any one of claims 1 to 3, wherein: the four hydraulic joint boxes are distributed in an annular array; The arc support beam is four sections, and the structure and the size of each section are the same.
5. 5. The servo support device for a circular foundation pit of claim 2, wherein: The hydraulic pump station is connected with the bidirectional hydraulic cylinder through a communication cable and is communicated with a hydraulic pipeline.
6. 6. The servo support device for a circular foundation pit of claim 1, wherein: wherein the gap liner layer is a cork layer or a rubber layer.

Description

Servo supporting device for circular foundation pit Technical Field The utility model relates to the technical field of foundation pit engineering, in particular to a servo supporting device for a circular foundation pit. Background Currently, in foundation pit engineering, particularly in the construction of round foundation pits, a support system is a critical part for ensuring the stability of the foundation pit. The traditional support forms are mainly reinforced concrete inner ring beams or lining wall supports and the like, and the support forms have a plurality of inconveniences in construction. Firstly, the construction period of the reinforced concrete support is long, and the next construction can be carried out after the concrete reaches the design strength, which certainly increases the construction period. Secondly, reinforced concrete supports are difficult to disassemble after pouring of foundation pit bottom plates, and difficulty is brought to subsequent structure construction. Furthermore, the conventional support form cannot timely adjust the support force according to the actual deformation condition of the foundation pit, so that the stability of the foundation pit is possibly affected. Disclosure of utility model The present utility model has been made to solve the above problems, and an object of the present utility model is to provide a servo support device for a circular foundation pit. The servo supporting device for the circular foundation pit comprises a plurality of circular arc supporting beams, a plurality of hydraulic joint boxes, a gap liner layer and hydraulic pump stations, wherein the circular arc supporting beams are circular arc section steel, the plurality of circular arc supporting beams form a supporting circular ring, the supporting circular ring is positioned on the inner side of a circular ground connecting wall, the plurality of hydraulic joint boxes are correspondingly arranged at the connecting positions of the adjacent circular arc supporting beams, each hydraulic joint box is correspondingly connected with the circular arc supporting beams on two sides, the gap liner layer is arranged between the supporting circular ring and the circular ground connecting wall, and the hydraulic pump stations are connected with the hydraulic joint boxes. The servo supporting device for the circular foundation pit is characterized in that the hydraulic joint box comprises a box shell, a bidirectional hydraulic cylinder is arranged in the box shell, the bidirectional hydraulic cylinder is provided with two piston rods with opposite directions, top plates are fixed at the tail ends of the two piston rods, and the two top plates are respectively connected and fixed with arc supporting beams at the two sides through bolts. Further, the servo supporting device for the circular foundation pit has the characteristics that the box shell is of a steel plate shell structure, the box shell is of an arc-shaped cavity, and the cross section of the box shell is rectangular. Furthermore, the servo supporting device for the circular foundation pit has the characteristics that four hydraulic joint boxes are distributed in an annular array. Furthermore, the servo supporting device for the circular foundation pit has the characteristics that the hydraulic pump station is connected with the bidirectional hydraulic cylinder through the communication cable and is communicated with the hydraulic pipeline. Further, the servo supporting device for the circular foundation pit has the following characteristics that the gap liner layer is a cork layer or a rubber layer. Compared with the prior art, the utility model has the following beneficial effects: 1. In the servo supporting device for the circular foundation pit, the arc supporting beam and the joint box are connected in a socket joint mode to form a supporting circular ring, so that the servo supporting device can adapt to the characteristic of a circular ground connecting wall, realize uniform supporting and improve supporting effect. 2. In the servo supporting device for the circular foundation pit, the arrangement of the gap liner layer not only ensures the close fit between the supporting ring and the circular diaphragm wall, but also can generate radial thrust on the circular diaphragm wall when the diameter of the supporting ring is increased, and the supporting ring can stably play a role through the strong friction force between the supporting ring and the circular diaphragm wall. 3. According to the servo supporting device for the circular foundation pit, the hydraulic pump station is used for controlling the expansion and contraction amount of the hydraulic cylinder, so that the degree of automation is high, and manual operation is reduced. 4. The servo supporting device for the circular foundation pit can replace the traditional supporting modes such as the prior reinforced concrete inner ring beam supporting mode or the lining wall mod