Rapid adjusting system of open caisson pressing sinking device
By using a combination of tension jack and tool anchor in the caisson deposition device, a single-time straightening steel strand harness is realized, which solves the problem of low efficiency of steel strand slack and sudden sinking correction in underground station construction, and improves construction Efficiency and quality reduce costs.
Patent Information
- Application Number
- CN202421429195.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-06-21
AI Technical Summary
During the construction of underground stations, ordinary jacks need to be straightened manually due to the loose steel strands during the sinking of the caisson, resulting in low construction efficiency and cannot be quickly corrected when the caisson suddenly sinks, which affects the construction quality.
Design a fast adjustment system for caisson deposition device, including prefabricated caisson, crown beam and deposition device, adopts a tensile jack and tool anchor, and straightens the entire steel strand harness at one time through electric hoist and door frame, instead of one by one. Straightening method to achieve rapid deviation correction.
It improves the construction efficiency and quality of caisson sinking, saves construction costs, and solves the problem that ordinary jacks cannot be corrected quickly and in real time.
Smart Images
Figure CN222206442U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground station construction, in particular to a quick adjustment system for a caisson pressure sinking device. Background Art
[0002] The continuous caisson construction process is a new construction method for underground stations in soft soil and water-rich areas. The Caozhuang Station of the urban rail transit is an underground two-story island station. The main structure of the station is an underground two-story rectangular frame structure. The station is 283.4 meters long. Seven sections of caisson structures are continuously sunk at close range to form the main skeleton of the station, and then the connecting sections between the caissons are connected to form the entire station. Each caisson is made 4 times and sunk 2 times, with a sinking depth of about 28.1 meters. "The difficulty lies in the extremely high requirements for precision control, and it also faces the challenges of difficulty in waterproofing construction and difficulty in controlling the differential settlement of each caisson." In response to this type of construction problem, the continuous caisson construction is invested in an integrated pressure sinking system. By using sinking aids and additional reinforcement equipment, the safety and accuracy of the continuous caisson construction are ensured. The pressure sinking device generally uses an ordinary jack. During the sinking process of the caisson, the ordinary jack needs to be manually straightened for every 20 centimeters it sinks due to the looseness of the steel strands. The straightening process requires the use of a crawler crane to cooperate with the construction, and the strands are straightened one by one, and the pressure sinking construction efficiency is very slow. If an intelligent jack is used, during the pressure sinking process, as the caisson sinks, the pump station can automatically straighten the steel strands while returning oil, greatly improving the pressure sinking efficiency. However, the disadvantage is that the intelligent jack is too expensive, about 10 times the price of an ordinary jack. Moreover, as the caisson sinks to take soil, if the caisson sinks suddenly and the sudden sinking depth is large, it is urgently necessary to rely on the pressure sinking device for real-time correction. The speed of the correction directly determines the construction quality of the caisson. Utility Model Content
[0003] In view of the problems existing in the above-mentioned prior art, the utility model aims to provide a quick adjustment system for the caisson pressing device, which can straighten the entire steel strand bundle at one time and solve the problem that ordinary jacks cannot correct deviation quickly and in real time.
[0004] In order to achieve the above-mentioned purpose, the utility model proposes a quick adjustment system for a caisson pressure sinking device, comprising a prefabricated caisson, a crown beam and a pressure sinking device, the crown beam being arranged on the outer circumference of the prefabricated caisson, the pressure sinking device comprising steel bullnecks arranged on the tops of the two side walls of the prefabricated caisson, the steel bullnecks being provided with tensioning jacks, a steel strand bundle being inserted and installed in the tensioning jacks, the lower end of the steel strand bundle being fixed to the crown beam through a locking anchor, the upper end of the steel strand bundle being fixed through the tensioning jacks through a tool anchor, the tool anchor being able to simultaneously lock each steel strand in the steel strand bundle one by one, a portal frame being further provided above the steel bullnecks, an electric hoist being installed on the portal frame, the electric hoist being located above the tool anchor, and the pull rope of the electric hoist being connected to the tool anchor.
[0005] In the above scheme: the tool anchor is a prestressed anchor, which can simultaneously lock each steel strand in the steel strand bundle one by one.
[0006] In the above scheme: the locking anchor includes an internal section embedded in the crown beam and an external section exposed at the top of the crown beam, the lower end of the steel strand bundle is connected to the external section of the locking anchor, and the locking anchor is embedded in the crown beam, with good anchoring effect and high stability.
[0007] In the above scheme: the steel corbel is connected to the embedded parts in the prefabricated caisson, and a rib is provided at the connection between the transverse section of the steel corbel and the embedded parts, which is conducive to ensuring the installation stability of the steel corbel.
[0008] The beneficial effect of the utility model is that by adding a tool anchor, a portal frame and an electric hoist, the entire steel strand bundle can be straightened at one time, replacing the original method of relying on a crawler crane to straighten the steel strands one by one, solving the problem that ordinary jacks cannot correct deviations quickly and in real time on site, and effectively saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the utility model.
[0010] Figure 2 This is the installation diagram of the steel corbel. DETAILED DESCRIPTION
[0011] like Figure 1 As shown in FIG. 2 , a quick adjustment system for a caisson pressing device is mainly composed of a prefabricated caisson 1, a crown beam 2 and a pressing device.
[0012] The crown beam 2 is arranged on the outer circumference of the prefabricated caisson 1 .
[0013] The pressure sinking device includes a steel bracket 3 arranged on the top of the two side walls of the prefabricated caisson 1, and a tensioning jack 4 is arranged on the steel bracket 3. A steel strand bundle 5 is inserted and installed in the tensioning jack 4. The lower end of the steel strand bundle 5 is fixed to the crown beam 2 through a locking anchor 6, and the upper end of the steel strand bundle 5 is fixed through the tensioning jack 4 and then fixed by a tool anchor 7. The tool anchor 7 can simultaneously lock each steel strand in the steel strand bundle 5 one by one.
[0014] The number of pressure sinking devices on both sides of the prefabricated caisson 1 can be arranged as needed.
[0015] A gantry frame 8 is also provided above the steel bracket 3, on which an electric hoist is installed. The electric hoist is located above the tool anchor 7, and the pull rope of the electric hoist is connected to the tool anchor 7. The tool anchor 7, the gantry frame 8 and the electric hoist cooperate to straighten the entire steel strand bundle 5 at one time, replacing the original method of straightening the steel strands one by one by relying on a crawler crane, solving the problem that ordinary jacks cannot correct deviations quickly and in real time on site, and effectively saving construction costs.
[0016] Preferably, the tool anchor 7 is a prestressed anchor, which can simultaneously lock each steel strand in the steel strand bundle 5 one by one.
[0017] Preferably, the locking anchor 6 includes an inner section embedded in the crown beam 2 and an outer section exposed at the top of the crown beam, the lower end of the steel strand bundle 5 is connected to the outer section of the locking anchor 6, and the locking anchor 6 is embedded in the crown beam 2, with good anchoring effect and high stability.
[0018] Preferably, the steel corbel 3 is connected to the embedded part 11 in the prefabricated caisson 1 , and a rib 31 is provided at the connection between the transverse section of the steel corbel 3 and the embedded part 11 , which is beneficial to ensure the installation stability of the steel corbel 3 .
Claims
1. A quick adjustment system for a caisson pressure sinking device, comprising a prefabricated caisson (1), a crown beam (2) and a pressure sinking device, wherein the crown beam (2) is arranged on the outer circumference of the prefabricated caisson (1), and the pressure sinking device comprises steel brackets (3) arranged on the top of the two side walls of the prefabricated caisson (1), and the steel brackets (3) are provided with tensioning jacks (4), and a steel strand bundle (5) is inserted and installed in the tensioning jacks (4), and the lower end of the steel strand bundle (5) is fixed to the crown beam (2) by a locking anchor (6), characterized in that: The upper end of the steel strand bundle (5) passes through the tensioning jack (4) and is fixed by a tool anchor (7). The tool anchor (7) can simultaneously lock each steel strand in the steel strand bundle (5) one by one. A door frame (8) is also provided above the steel bracket (3). An electric hoist is installed on the door frame (8). The electric hoist is located above the tool anchor (7), and a pull rope of the electric hoist is connected to the tool anchor (7).
2. The quick adjustment system for caisson sinking device according to claim 1 is characterized in that: The tool anchor (7) is a prestressed anchor.
3. The quick adjustment system for caisson sinking device according to claim 1 is characterized in that: The locking anchor (6) comprises an inner section pre-buried in the crown beam (2) and an outer section exposed at the top of the crown beam, and the lower end of the steel strand bundle (5) is connected to the outer section of the locking anchor (6).
4. The quick adjustment system for caisson sinking device according to claim 1 is characterized in that: The steel bracket (3) is connected to the embedded part (11) in the prefabricated caisson (1), and a rib plate (31) is provided at the connection between the transverse section of the steel bracket (3) and the embedded part (11).