Deviation rectifying device for open caisson

Abstract

The utility model discloses an open caisson deviation rectifying device which comprises an open caisson wall located in a hole pit, a reinforced concrete plate surrounding the open caisson wall is arranged at the position of a hole opening, and a plurality of steel cables sequentially extending from the reinforced concrete plate and the hole pit wall to the edge foot of the open caisson wall are fixed to the bottom of the reinforced concrete plate. The steel cables are arranged in the circumferential direction of the well wall of the open caisson, and pull rings fixedly connected with the bottom of the well wall of the open caisson in the circumferential direction are arranged at the bottoms of the steel cables. The hardened reinforced concrete slab blocks are symmetrically arranged on the periphery of the open caisson, the steel cables are connected with the bottom of the open caisson, the sedimentation rate of the open caisson is controlled under the action of gravity and lateral extrusion of the reinforced concrete slabs, and the open caisson can be widely applied to construction of underground space.

Description

Technical Field

[0001] The utility model relates to underground space construction, in particular to a caisson deviation correction device. Background Art

[0002] With the rise of urban underground space, caisson structures are used more and more widely. Faced with large caisson structures and complex geological conditions, uniform sinking of the caisson is the primary problem to be solved. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide a caisson correction device, which solves the problem of uneven settlement of the caisson. Hardened reinforced concrete slabs are symmetrically arranged around the caisson, and the bottom of the caisson is connected with steel cables. The settlement rate of the caisson is controlled under the action of gravity and lateral extrusion of the reinforced concrete slabs.

[0004] The utility model provides a caisson correction device, including a caisson wall located in a hole, wherein a reinforced concrete slab surrounding the caisson wall is provided at the hole entrance, a plurality of steel cables are fixed to the bottom of the reinforced concrete slab and are arranged in sequence along the reinforced concrete slab and the hole wall to the cutting edge of the caisson wall, the plurality of steel cables are arranged circumferentially along the caisson wall, and a pull ring is provided at the bottom of the plurality of steel cables and is circumferentially fixedly connected to the bottom of the caisson wall.

[0005] In the above technical solution, the outer wall of the caisson wall is evenly distributed from top to bottom with a plurality of limiting rings coaxially sleeved therewith, and the plurality of steel cables pass through each limiting ring and are fixedly connected to the blade feet of the caisson wall.

[0006] In the above technical solution, a reinforcement ring is provided along the circumferential bottom of the reinforced concrete slab, a profile steel ring is provided at the inner edge of the reinforced concrete slab, the profile steel ring is located above the reinforcement ring, and the end of the steel cable passes through the reinforcement ring for tensioning.

[0007] In the above technical solution, the steel cable passes through an anchor arranged at the bottom of the reinforced concrete slab.

[0008] In the above technical solution, a gap of no more than 50 cm is provided between the inner ring of the reinforced concrete slab and the wall of the caisson.

[0009] In the above technical solution, there are four steel cables in total, and the four steel cables are symmetrically arranged along the center of the caisson wall.

[0010] In the above technical solution, the reinforced concrete slab is a square plate with a circular hole corresponding to the hole in the center.

[0011] The utility model of the caisson deviation correction device has the following beneficial effects:

[0012] 1) Hardening is carried out around the well and steel is set to form a whole, ensuring the overall strength and rigidity of the hardened area and ensuring that there will be no cracking under working conditions;

[0013] 2) The hardened area around the well is set symmetrically. During the sinking process of the caisson, the tension of the steel cable is partially converted into the pressure of the reinforced concrete slab, making full use of the advantages of the compressive performance of the steel bars;

[0014] 3) Limiting rings are arranged around the well and in the hardened area to limit the displacement of the steel cable and ensure that the hardened area is subjected to overall horizontal compression without oblique tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of the structure of the utility model caisson deviation correction device;

[0016] Figure 2 It is a schematic diagram of the top view of the structure of the caisson deviation correction device of the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.

[0018] See also Figure 1 to Figure 2 The utility model provides a caisson correction device, comprising a caisson wall 1 located in a hole, wherein a reinforced concrete slab 2 surrounding the caisson wall 1 is provided at the hole entrance. In one or more embodiments, the reinforced concrete slab 2 is a square slab with a circular hole corresponding to the hole in the center. A plurality of steel cables 3 are fixed to the bottom of the reinforced concrete slab 2, which are arranged in sequence along the reinforced concrete slab 2 and the hole wall to the blade foot of the caisson wall 1. The steel cables 3 pass through anchors provided at the bottom of the reinforced concrete slab 2. The plurality of steel cables 3 are arranged circumferentially along the caisson wall 1. A pull ring 4 circumferentially fixedly connected to the bottom of the caisson wall 1 is provided at the bottom of the plurality of steel cables 3. In one or more embodiments, there are four steel cables 3 in total, and the four steel cables 3 are symmetrically arranged along the center of the caisson wall 1.

[0019] The outer wall of the caisson wall 1 is uniformly provided with a plurality of limiting rings 5 ​​coaxially sleeved therewith from top to bottom, and the plurality of steel cables 3 pass through each limiting ring 5 and are fixedly connected to the blade foot of the caisson wall 1 .

[0020] The reinforced concrete slab 2 is provided with a reinforcement ring 6 along the circumferential bottom, and the inner edge of the reinforced concrete slab 2 is provided with a profile steel ring 7, which is located above the reinforcement ring 6, and the end of the steel cable 3 passes through the reinforcement ring 6 for tensioning.

[0021] A gap of no more than 50 cm is provided between the inner ring of the reinforced concrete slab 2 and the caisson wall 1 .

[0022] The specific construction of this utility model is as follows:

[0023] 1) Measure and lay out the lines, reserve the scope of the caisson structure, lay steel bars, steel rings 7, embedded limit rings 5 ​​and steel cables 3 around the well, and the distance between the hardened area (after hardening, a reinforced concrete slab 2 is formed) and the edge of the caisson structure is no more than 50 cm;

[0024] 2) The end of the hardened area is enlarged and set to an inverted L shape, because when the caisson wall 1 sinks, the end of the reinforced concrete slab 2 bears a large tensile force. The purpose of enlarging the end is to improve the stress performance of the entire reinforced concrete slab 2 so that it will not break due to diagonal tension. The purpose of enlarging the end is to adjust the stress angle of the reinforced concrete slab 2 and convert part of the tensile force into pressure (the compressive performance of concrete is better than the tensile performance, giving full play to the material properties of concrete);

[0025] 3) pouring concrete with a strength grade of not less than C30, and curing it to form a reinforced concrete slab 2 with a reinforcement ring 6 after hardening;

[0026] 4) Construct the caisson structure in the hardened area, set a limit ring 5 on the caisson wall 1, and set a pull ring 4 on the caisson blade foot;

[0027] 5) During the caisson excavation process, the excavation is carried out symmetrically and orderly. A tensioning device is set at the end of the steel cable 3 to evenly release the tension to ensure that the sinking rate on all sides remains consistent.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A caisson deviation correction device, comprising a caisson wall (1) located in a pit, characterized in that: A reinforced concrete slab (2) surrounding the caisson wall (1) is provided at the hole opening, and a plurality of steel cables (3) are fixed to the bottom of the reinforced concrete slab (2) and are arranged in sequence along the reinforced concrete slab (2) and the hole wall to the blade foot of the caisson wall (1). The plurality of steel cables (3) are arranged circumferentially along the caisson wall (1), and a pull ring (4) is provided at the bottom of the plurality of steel cables (3) and is circumferentially fixedly connected to the bottom of the caisson wall (1).

2. The caisson deviation correction device according to claim 1 is characterized in that: The outer wall of the caisson wall (1) is uniformly provided with a plurality of limit rings (5) coaxially sleeved therewith from top to bottom, and the plurality of steel cables (3) pass through each limit ring (5) and are fixedly connected to the blade foot of the caisson wall (1).

3. The caisson deviation correction device according to claim 2 is characterized in that: The reinforced concrete slab (2) is provided with a reinforcement ring (6) along the circumferential bottom, and the inner edge of the reinforced concrete slab (2) is provided with a profiled steel ring (7), the profiled steel ring (7) is located above the reinforcement ring (6), and the end of the steel cable (3) passes through the reinforcement ring (6) for tensioning.

4. The caisson deviation correction device according to claim 3 is characterized in that: The steel cable (3) passes through an anchor arranged at the bottom of the reinforced concrete slab (2).

5. The caisson deviation correction device according to claim 4 is characterized in that: A gap of no more than 50 cm is provided between the inner ring of the reinforced concrete slab (2) and the caisson wall (1).

6. The caisson deviation correction device according to claim 5 is characterized in that: There are four steel cables (3) in total, and the four steel cables (3) are symmetrically arranged along the center of the caisson wall (1).

7. The caisson deviation correction device according to claim 6 is characterized in that: The reinforced concrete slab (2) is a square slab with a circular hole corresponding to the hole at the center.

Images