CN111576442A - Steel cross brace device with adjustable axial force - Google Patents
Steel cross brace device with adjustable axial force Download PDFInfo
- Publication number
- CN111576442A CN111576442A CN202010458471.2A CN202010458471A CN111576442A CN 111576442 A CN111576442 A CN 111576442A CN 202010458471 A CN202010458471 A CN 202010458471A CN 111576442 A CN111576442 A CN 111576442A
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- steel
- axial force
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- loose end
- connector
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The utility model provides an axle power adjustable steel stull device, the inboard of one side foundation ditch retaining structure is provided with the steel shotcrete stiff end, the steel shotcrete stiff end is connected with steel shotcrete one end through steel shotcrete go-between, the other end of steel shotcrete is connected with steel shotcrete loose end through steel shotcrete go-between, the inboard of relative one side foundation ditch retaining structure is provided with the steel sheet of dismantling, the steel sheet of dismantling is connected with the connector through the steel sheet stationary vane, the right-hand member of connector is provided with axle dynamometer fixing device, be provided with the axle power meter in the axle dynamometer fixing device, the left end of connector is connected with steel shotcrete loose end, the piston rod of electro-hydraulic jack sets up on steel shotcrete loose end, the base sets up on the connector, electro-hydraulic jack, the axle power meter is connected with the data processor electricity, this device can, Greatly liberates labor force and increases working efficiency.
Description
Technical Field
The invention belongs to the technical field of foundation pit construction, and particularly relates to a steel cross brace device with adjustable axial force.
Background
With the rapid development of urban construction in China, part of urban rail transit construction, especially subway stations, is mostly constructed by open cut method, in order to stabilize the stability of rock and soil mass around a foundation pit in the open cut method, except that bored concrete piles or underground continuous walls are arranged in advance at the periphery of the foundation pit, concrete supports or steel supports are generally arranged inside the foundation pit, and because the concrete supports generally do not have reusability, great waste is often caused, so the steel supports are widely applied to foundation pit support.
The purpose of additionally arranging the steel supports is to resist the soil pressure from rock and soil masses on two sides of the foundation pit so as to ensure the stability of the foundation pit and the safe operation inside the foundation pit. Because the steel support function is important, the steel support axial force monitoring is used as a project to be measured in foundation pit monitoring. However, in the conventional measurement, on one hand, when the number of the steel supports in the foundation pit is large, and the construction environment of the foundation pit is complex, a measurer generally measures the steel supports on the edge of the foundation pit, and the depth of the foundation pit is often deep (>5m), so that great potential safety hazards exist. On the other hand, besides the measurement of the supporting axial force, the measurement personnel also need to measure the vertical displacement of the peripheral earth surface, the underground water level, the horizontal displacement of the fender post and the like, and the measurement task is heavy.
In summary, there is a need to develop a steel support axial force monitoring system with automatic measurement and automatic alarm, which relieves the staff from the heavy task and avoids the deliberate change of the measurement data by the measurement staff. The invention mainly develops a set of axial force adjustable steel cross brace system integrating data acquisition and early warning.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the steel cross brace device with the adjustable axial force, which has the advantages of reasonable design, simple structure and capability of realizing automatic adjustment of the axial force by acquiring data.
The technical scheme for solving the technical problems is as follows: the inboard of one side foundation ditch envelope is provided with the steel shotcrete stiff end, the steel shotcrete stiff end is connected with steel shotcrete one end through the steel shotcrete go-between, the other end of steel shotcrete is connected with the loose end of steel shotcrete through the steel shotcrete go-between, the inboard of relative one side foundation ditch envelope is provided with can dismantle the steel sheet, can dismantle the steel sheet and be connected with the connector through the steel sheet stationary vane, the right-hand member of connector is provided with axle dynamometer fixing device, be provided with the axle dynamometer in the axle dynamometer fixing device, the left end and the loose end of steel shotcrete of connector are connected, the piston rod of electronic hydraulic jack sets up in the loose end of steel shotcrete, the base sets up.
The connector of the invention is: the upper end of the loose end steel base plate is provided with an erection plate, the erection plate is lapped on the top of the foundation pit support structure on the same side, the left end of the loose end steel base plate is provided with a loose end telescopic shaft, the front side and the rear side of the loose end telescopic shaft on the loose end steel base plate are symmetrically provided with 2 jack fixing rings, and a base of the electric hydraulic jack is arranged in the jack fixing rings.
The steel support loose end is of a cylindrical structure, a connecting hole is machined in one end, connected with the connector, of the steel support loose end, the connecting hole is a rectangular hole, and the loose end telescopic shaft is inserted into the connecting hole.
A telescopic shaft reinforcing plate is arranged between the loose end steel base plate and the loose end telescopic shaft; the erection plate is provided with an erection plate reinforcing plate.
The detachable steel plate is formed by connecting a steel plate body and inserting columns into a whole, wherein 4 inserting columns are uniformly distributed on a square steel plate body, and the inserting columns are rectangular columns with triangular grooves machined in the center positions of two opposite side faces.
The steel plate fixed wing of the invention is: the fixed wing body is L shape structure, and processing has the fixed orifices on the short arm of L shape structure, and the steel sheet fixed wing is fixed in the connector right-hand member through the threaded connection fastener of installing in the fixed orifices, and the long arm central point of L shape structure puts the processing have with inserting the jack that the post suited.
The axial force meter fixing device of the invention is: the left end equipartition that is cavity columniform solid fixed ring is provided with 4 connecting plates, processes threaded hole on the connecting plate, and solid fixed ring is fixed in the connector right-hand member through the threaded connection fastener of installing in the fixed orifices.
The two ends of the steel support connecting ring are provided with steel support connecting reinforcing plates.
Compared with the prior art, the invention has the following advantages:
1. the electric hydraulic jack is fixed through the jack fixing ring, the detachable steel plate is connected with the inserting column through the inserting hole in the steel plate fixing wing, and the steel plate fixing wing is fixedly connected and installed at the right end of the steel base plate at the movable end through the threaded fastening connecting piece.
2. According to the invention, the electric hydraulic jacks are symmetrically arranged on the steel base plate at the loose end in front and back of the telescopic shaft at the loose end for axial force adjustment, the two electric hydraulic jacks work in a linkage manner when applying axial force, the axial force applied by the two electric hydraulic jacks is consistent, and the steel support is prevented from being eccentric too much due to unequal axial force at two sides.
3. The invention adopts the data processor to replace the traditional manual steel support axial force measurement, realizes the automation and the remote measurement of the steel support axial force through the data acquisition module, the data amplification module, the digital-to-analog conversion module, the data processing module, the alarm module and the display module, greatly liberates labor force and increases the working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the structure of the connector 10 of fig. 1.
Fig. 3 is a schematic structural view of the steel plate fixing wing 8 in fig. 1.
Fig. 4 is a schematic structural view of the detachable steel plate 11 of fig. 1.
Fig. 5 is a schematic structural view of the dynamometer fixing device 13 in fig. 1.
Fig. 6 is a schematic structural diagram of the steel support loose end 6 in fig. 1.
In the figure: 1. a foundation pit support structure; 2. a steel support fixing end; 3. a steel support connecting ring; 4. the steel support is connected with the reinforcing plate; 5. supporting steel; 6. a steel support loose end; 7. an electro-hydraulic jack; 8. a steel plate fixed wing; 9. a data processor; 10. a connector; 11. a detachable steel plate; 12. an axial force meter; 13. an axial force meter fixing device; 10-1, flexible end telescopic shaft; 10-2, a telescopic shaft reinforcing plate; 10-3, erecting a plate reinforcing plate; 10-4, erecting a plate; 10-5, loose end steel backing plate; 10-6, a jack fixing ring; 11-1, a steel plate body; 11-2, inserting a column; 13-1, fixing a ring; 13-2, connecting plates; 8-1, a fixed wing body; a. a jack; b. a fixing hole; c. connecting holes; d. a threaded bore.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.
Example 1
In the figures 1 and 6, the steel cross brace device with the adjustable axial force is characterized in that a steel support fixed end 2 is fixedly and fixedly connected and installed on the inner side of a foundation pit support structure 1 on one side through a threaded fastening connecting piece, the steel support fixed end 2 is connected with one end of a steel support 5 through a steel support connecting ring 3, the other end of the steel support 5 is connected with a steel support loose end 6 through the steel support connecting ring 3, the steel support loose end 6 is of a cylindrical structure, a connecting hole c is machined in one end, connected with a connector 10, of the steel support loose end 6, and the connecting hole c is a rectangular hole. Both ends of the steel support connecting ring 3 are fixedly welded with steel support connection reinforcing plates 4, and the connection stability of the steel support connecting ring 3, the steel support 5, the steel support fixed end 2 and the steel support loose end 6 is enhanced.
In the drawings 2 and 3, the inner side of the foundation pit enclosure structure 1 on the opposite side is fixedly connected and provided with a detachable steel plate 11 through a threaded fastening connecting piece, the detachable steel plate 11 is connected with a connector 10 through a steel plate fixing wing 8, the connector 10 of the embodiment is formed by connecting a loose end telescopic shaft 10-1, a telescopic shaft reinforcing plate 10-2, a mounting plate reinforcing plate 10-3, a mounting plate 10-4, a loose end steel base plate 10-5 and a jack fixing ring 10-6, the loose end steel base plate 10-5 is a square steel plate, the upper end of the loose end steel base plate 10-5 is fixedly welded with a mounting plate 10-4, the mounting plate 10-4 and the loose end steel base plate 10-5 are vertically welded with each other, the mounting plate 10-4 is fixedly welded with a plurality of mounting plate reinforcing plates 10-3, and the mounting plate reinforcing plates 10-3 improve the connection between the mounting plate 10-4 and the loose end steel base plate 10-5 Strength. The erection plate 10-4 is lapped on the top of the foundation pit support structure 1 at the same side and is fixedly connected and installed through a threaded fastening connecting piece, the left end of the loose end steel base plate 10-5 is fixedly welded with a loose end telescopic shaft 10-1, the loose end telescopic shaft 10-1 is a rectangular shaft, a telescopic shaft reinforcing plate 10-2 is fixedly welded between the loose end steel base plate 10-5 and the loose end telescopic shaft 10-1, the telescopic shaft reinforcing plate 10-2 is welded on 4 corners of the loose end telescopic shaft 10-1, the telescopic shaft reinforcing plate 10-2 increases the connection stability between the loose end steel base plate 10-5 and the loose end telescopic shaft 10-1, 2 jack fixing rings 10-6 are symmetrically welded and fixed on the front side and the rear side of the loose end telescopic shaft 10-1 on the loose end steel base plate 10-5, a base of an electric hydraulic jack 7 is installed in the jack fixing ring 10-5, The piston rod is fixed on the steel support loose end 6, the loose end telescopic shaft 10-1 is inserted into the connecting hole c, the loose end telescopic shaft 10-1 can slide back and forth in the connecting hole c under the action of the electric hydraulic jack 7, but the loose end telescopic shaft 10-1 cannot be separated from the connecting hole c.
In fig. 4 and 5, an axial force meter fixing device 13 is fixedly welded at the right end of a loose end steel backing plate 10-5 of a connector 10, the axial force meter fixing device 13 is formed by connecting a fixing ring 13-1 and a connecting plate 13-2, 4 connecting plates 13-2 are uniformly welded and fixed at the left end of a hollow cylindrical fixing ring 13-1, a threaded hole d is machined in each connecting plate 13-2, the fixing ring 13-1 is fixed at the right end of the loose end steel backing plate 10-5 through a threaded connecting fastener installed in the fixing hole a, an axial force meter 12 is installed in the fixing ring 13-1, and the axial force meter 12 is used for measuring the steel support axial force, namely obtaining a measured value F. The detachable steel plate 11 is formed by connecting a steel plate body 11-1 and insert columns 11-2 into a whole, 4 insert columns 11-2 are uniformly welded on a square steel plate body 11-1, the insert columns 11-2 are rectangular columns with triangular grooves processed at the center positions of two opposite side surfaces, a steel plate fixed wing 8 is formed by a steel plate fixed wing body 8-1, the fixed wing body 8-1 is in an L-shaped structure, a short arm of the L-shaped structure is processed with a fixed hole b, the steel plate fixed wing 8 is fixed at the right end of a loose end steel cushion plate 10-5 through a threaded connection fastener installed in the fixed hole a, a jack a matched with the insert column 11-2 is processed at the center position of a long arm of the L-shaped structure, the insert column 11-2 is inserted into the jack a, so designed, the loose end steel cushion plate 10-5 can be fixed, and the loose end steel cushion plate 10-5 can be ensured to slide in the axial direction of a, the electro-hydraulic jack 7 and the axial force meter 13 of the embodiment are electrically connected with a data processor 9, the data processor 9 is formed by connecting a data acquisition module, a data amplification module, a digital-to-analog conversion module, a data processing module, an alarm module and a display module, the data acquisition module is connected with the axial force meter 12 and acquires a measured value F of the axial force meter 12 in real time, the output end of the data acquisition module is connected with the data amplification module and amplifies the acquired signal, the output end of the data acquisition module is connected with the digital-to-analog conversion module which converts the acquired signal into an analog signal, the output end of the digital-to-analog conversion module is connected with the data processing module, the output end of the data processing module is connected with the input ends of the alarm module and the display module, the data processing module is connected with the electro-hydraulic jack 7, the model of the data processing module is EP1800LM, and the data processing module compares the pre-input pre-applied, if the pre-applied axial force c is larger than the measured value F, the data processing module sends a pressurizing instruction to the electric hydraulic jack 7 to control the electric hydraulic jack 7 to perform pressurizing operation, the change of the measured value F is monitored in real time through the display module, and when the pre-applied axial force c is equal to the measured value F, the data processing module sends a stopping instruction to the electric hydraulic jack 7; if the pre-applied axial force c is smaller than the measured value F, the data processing module gives an instruction to the alarm module, the alarm module gives out sound and light alarm, meanwhile, the data processing module gives out a decompression instruction to the electric hydraulic jack 7 and controls the electric hydraulic jack 7 to execute decompression operation until the pre-applied axial force c is equal to the measured value F.
Claims (8)
1. The utility model provides an axial force adjustable steel stull device which characterized in that: the inner side of a foundation pit support structure (1) at one side is provided with a steel support fixed end (2), the steel support fixed end (2) is connected with one end of a steel support (5) through a steel support connecting ring (3), the other end of the steel support (5) is connected with a steel support loose end (6) through the steel support connecting ring (3), the inner side of the foundation pit support structure (1) at the opposite side is provided with a detachable steel plate (11), the detachable steel plate (11) is connected with a connector (10) through a steel plate fixed wing (8), the right end of the connector (10) is provided with an axial force meter fixing device (13), an axial force meter (12) is arranged in the axial force meter fixing device (13), the left end of the connector (10) is connected with the steel support loose end (6), a piston rod of an electric hydraulic jack (7) is arranged on the steel support loose end (6), a base is arranged on the connector (10, the electric hydraulic jack (7) and the axial force meter (13) are electrically connected with the data processor (9).
2. The steel wale device with adjustable axial force according to claim 1, wherein said connector (10) is: the upper end of the loose end steel base plate (10-5) is provided with a mounting plate (10-4), the mounting plate (10-4) is lapped on the top of the foundation pit enclosure structure (1) on the same side, the left end of the loose end steel base plate (10-5) is provided with a loose end telescopic shaft (10-1), the front side and the rear side of the loose end telescopic shaft (10-1) on the loose end steel base plate (10-5) are symmetrically provided with 2 jack fixing rings (10-6), and the base of the electric hydraulic jack (7) is arranged in the jack fixing rings (10-5).
3. The steel wale device with adjustable axial force according to claim 2, wherein: the steel support loose end (6) is of a cylindrical structure, a connecting hole (c) is formed in one end, connected with the connector (10), of the steel support loose end (6), the connecting hole (c) is a rectangular hole, and the loose end telescopic shaft (10-1) is inserted into the connecting hole (c).
4. The steel wale device with adjustable axial force according to claim 2, wherein: a telescopic shaft reinforcing plate (10-2) is arranged between the loose end steel base plate (10-5) and the loose end telescopic shaft (10-1); the erection plate (10-4) is provided with an erection plate reinforcing plate (10-3).
5. The steel wale device with adjustable axial force according to claim 1, wherein: the detachable steel plate (11) is formed by connecting a steel plate body (11-1) and inserting columns (11-2) into a whole, 4 inserting columns (11-2) are uniformly distributed on the square steel plate body (11-1), and the inserting columns (11-2) are rectangular columns with triangular grooves machined in the center positions of two opposite side faces.
6. The steel wale device with adjustable axial force according to claim 5, wherein the steel plate fixing wings (8) are: the fixed wing body (8-1) is of an L-shaped structure, a fixed hole (b) is processed on a short arm of the L-shaped structure, the steel plate fixed wing (8) is fixed at the right end of the connector (10) through a threaded connection fastener installed in the fixed hole (a), and a jack (a) matched with the inserting column (11-2) is processed in the center of a long arm of the L-shaped structure.
7. The steel wale device with adjustable axial force according to claim 1, wherein said axial force meter fixing means (13) is: the left end of a hollow cylindrical fixing ring (13-1) is uniformly provided with 4 connecting plates (13-2), threaded holes (d) are processed in the connecting plates (13-2), and the fixing ring (13-1) is fixed at the right end of the connector (10) through threaded connecting fasteners installed in the fixing holes (a).
8. The steel wale device with adjustable axial force according to claim 1, wherein: and both ends of the steel support connecting ring (3) are provided with steel support connecting reinforcing plates (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458471.2A CN111576442A (en) | 2020-05-27 | 2020-05-27 | Steel cross brace device with adjustable axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458471.2A CN111576442A (en) | 2020-05-27 | 2020-05-27 | Steel cross brace device with adjustable axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111576442A true CN111576442A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010458471.2A Pending CN111576442A (en) | 2020-05-27 | 2020-05-27 | Steel cross brace device with adjustable axial force |
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| Country | Link |
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| CN (1) | CN111576442A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177011A (en) * | 2020-09-07 | 2021-01-05 | 中国一冶集团有限公司 | Foundation pit force application device, foundation pit steel support device and foundation pit steel support installation method |
| CN112302062A (en) * | 2020-10-09 | 2021-02-02 | 河海大学 | Assembly type high-precision steel support shaft force meter erection protection device and implementation method thereof |
| CN113585285A (en) * | 2021-08-24 | 2021-11-02 | 中国地质大学（武汉） | Device for eliminating influence of lattice column on axial force of support beam and mounting method |
| CN114482065A (en) * | 2021-12-09 | 2022-05-13 | 中建八局第二建设有限公司 | Deep foundation pit construction device for newly-built building, close to subway and connected with subway |
| CN114687387A (en) * | 2022-02-10 | 2022-07-01 | 浙江工业大学 | Foundation pit axial force servo system simulation entity controller platform |
| CN116446420A (en) * | 2023-06-13 | 2023-07-18 | 北京城建集团有限责任公司 | Steel support movable end, foundation pit steel support structure and foundation pit intelligent measurement and control system |
-
2020
- 2020-05-27 CN CN202010458471.2A patent/CN111576442A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177011A (en) * | 2020-09-07 | 2021-01-05 | 中国一冶集团有限公司 | Foundation pit force application device, foundation pit steel support device and foundation pit steel support installation method |
| CN112302062A (en) * | 2020-10-09 | 2021-02-02 | 河海大学 | Assembly type high-precision steel support shaft force meter erection protection device and implementation method thereof |
| CN113585285A (en) * | 2021-08-24 | 2021-11-02 | 中国地质大学（武汉） | Device for eliminating influence of lattice column on axial force of support beam and mounting method |
| CN114482065A (en) * | 2021-12-09 | 2022-05-13 | 中建八局第二建设有限公司 | Deep foundation pit construction device for newly-built building, close to subway and connected with subway |
| CN114482065B (en) * | 2021-12-09 | 2023-09-12 | 中建八局第二建设有限公司 | Deep foundation pit construction device for newly-built building adjacent to subway and connected with subway |
| CN114687387A (en) * | 2022-02-10 | 2022-07-01 | 浙江工业大学 | Foundation pit axial force servo system simulation entity controller platform |
| CN114687387B (en) * | 2022-02-10 | 2024-03-19 | 浙江工业大学 | Simulation entity controller platform of foundation pit axial force servo system |
| CN116446420A (en) * | 2023-06-13 | 2023-07-18 | 北京城建集团有限责任公司 | Steel support movable end, foundation pit steel support structure and foundation pit intelligent measurement and control system |
| CN116446420B (en) * | 2023-06-13 | 2023-09-26 | 北京城建集团有限责任公司 | Steel support movable end, foundation pit steel support structure and foundation pit intelligent measurement and control system |
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