CN212358284U - Construction structure of permanent steel-pipe column of lid digs contrary process - Google Patents
Construction structure of permanent steel-pipe column of lid digs contrary process Download PDFInfo
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- CN212358284U CN212358284U CN202021498501.4U CN202021498501U CN212358284U CN 212358284 U CN212358284 U CN 212358284U CN 202021498501 U CN202021498501 U CN 202021498501U CN 212358284 U CN212358284 U CN 212358284U
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Abstract
The utility model relates to a construction structure of permanent steel-pipe column of lid excavation top-down, steel casing, steel-pipe column and be used for hoisting the full set of pipe full slewing drilling machine of steel casing, steel-pipe column, the steel-pipe column sets up in the steel casing, be equipped with perpendicular sensor and hydraulic jack on the steel-pipe column, the perpendicular sensor sensing the straightness that hangs down of steel-pipe column; and the hydraulic jack adjusts the position of the steel pipe column according to the verticality reading of the vertical sensor. Compared with the prior art, the utility model provides a lid digs construction structures of permanent steel-pipe column of top-down operation, the utility model discloses when installing the steel-pipe column, use the straightness condition of hanging down of perpendicular sensor real-time detection steel-pipe column to use hydraulic jack to realize automatic rectifying, guarantee that the straightness that hangs down of steel-pipe column reaches the design requirement. The utility model discloses a regulation and control to steel-pipe column vertical reading has realized the accurate location of steel-pipe column, and then has guaranteed to cover and dug the engineering quality and the security performance of doing the structure with one's head on.
Description
Technical Field
The utility model discloses tunnel construction technical field especially relates to a lid digs construction structures of permanent steel-pipe column of top-down operation.
Background
With the vigorous development of rail transit construction, the demand of subway stations in densely-built areas is more and more strong, the ground traffic can be blocked when the subway stations in the central area of the city are constructed by adopting an open excavation method, the construction floor area can be reduced to the maximum extent by a cover excavation reverse method without interrupting the traffic, and the influence of subway construction on the urban traffic operation and the life of residents is greatly reduced, so that the subway construction method is widely applied in recent years. The cover-excavation reverse method is that after the ground is excavated downwards to a certain depth, the top is sealed, and the rest lower engineering works are constructed under the sealed top plate, namely, the main structure is excavated layer by layer from top to bottom and is built to the bottom plate.
In the cover-excavation reverse construction method, the steel pipe column is used as a main stressed structural member of the cover-excavation structure, can bear vertical load in a construction stage and a use stage, and has quite high requirements on installation accuracy and verticality control of the steel pipe column. Meanwhile, the mounting precision and the verticality of the steel pipe column in the construction process directly influence the bearing performance and the safety performance of the steel pipe column in the subsequent construction and use stages. Therefore, ensuring smooth installation and accurate positioning of the steel pipe column is a technical difficulty in construction and is also a technical key point.
In the prior art, the positioning construction of the steel pipe column mostly adopts an HPE hydraulic vertical method, and a permanent steel pipe column with a closed bottom end is vertically inserted into supporting pile concrete after the supporting pile concrete is poured and before the concrete is initially set by vertically inserting HPE liquid into two hydraulic vertical insertion devices on a machine body until the permanent steel pipe column is inserted to a designed elevation. However, the HPE hydraulic vertical method cannot guarantee positioning accuracy after exceeding a certain depth.
At present, no complete, mature and safe construction structure exists for the installation and positioning of large-diameter steel pipe columns in large-scale comprehensive transportation hub engineering.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at overcoming prior art's is not enough, provides a lid digs construction structures of doing permanent steel-pipe column, and it can monitor the steel-pipe column straightness that hangs down and in time rectifies, and then has guaranteed the installation accuracy and the straightness that hangs down of steel-pipe column, guarantees to cover and digs engineering quality and the security performance of doing the structure with one's own judgement.
The utility model discloses a realize through following technical scheme: a construction structure for a covered and excavated top-down permanent steel pipe column comprises a steel sleeve, the steel pipe column and a full-casing full-slewing drilling machine for hoisting the steel sleeve and the steel pipe column, wherein the steel pipe column is arranged in the steel sleeve, a vertical sensor and a hydraulic jack are arranged on the steel pipe column, and the vertical sensor senses the verticality of the steel pipe column; and the hydraulic jack adjusts the position of the steel pipe column according to the verticality reading of the vertical sensor.
Compared with the prior art, the utility model provides a lid digs construction structures of permanent steel-pipe column of top-down operation, the utility model discloses when installing the steel-pipe column, use the straightness condition of hanging down of perpendicular sensor real-time detection steel-pipe column to use hydraulic jack to realize automatic rectifying, guarantee that the straightness that hangs down of steel-pipe column reaches the design requirement. The utility model discloses a regulation and control to steel-pipe column vertical reading has realized the accurate location of steel-pipe column, and then has guaranteed to cover and dug the engineering quality and the security performance of doing the structure with one's head on.
Furthermore, one end of the hydraulic jack is arranged on the steel pipe column, and the other end of the hydraulic jack props against the inner wall of the steel sleeve.
Furthermore, the number of the hydraulic jacks is four, and the four hydraulic jacks are arranged at equal intervals along the circumferential direction of the steel pipe column. The offset of the steel pipe column can be judged according to the reading of the vertical sensor, and then four hydraulic jacks are controlled to correct the deviation of the steel pipe column in different directions.
Further, the hydraulic jack is located the middle lower part of steel-pipe column. The hydraulic jack is arranged at the middle lower part of the steel pipe column, so that the steel pipe column can be corrected more effectively, and the correction result is more accurate.
Furthermore, the number of the vertical sensors is two, and the two vertical sensors are respectively arranged at the top and the bottom of the steel pipe column.
Further, the vertical sensor is a tilt sensor. The utility model discloses a set up inclination sensor to with its setting in the top and the bottom of steel-pipe column, can be through the top surface and the bottom surface of measuring the steel-pipe column for horizontal position's gradient, and then judge whether perpendicular the steel-pipe column, and can judge its offset according to inclination sensor's X Y axle reading, and then in time rectify a deviation.
Further, a chain rope is arranged on the hydraulic jack. The chain rope is installed on the hydraulic jack to realize later-stage dismantling and achieve the aim of recycling.
Further, still include the tool post, the tool post sets up in the steel tubular column top. The tool column is used for assisting the steel pipe column to be installed to the designed top plate elevation, the steel crawling ladder arranged in the tool column is convenient for workers to enter the steel pipe column, and after the tool column is moved to the top plate position, the joint of the tool column and the steel pipe column below the top plate is detached, and the elevation of the top of the steel pipe column is completed.
Furthermore, the steel reinforcement cage is arranged between the steel sleeve and the steel pipe column and welded on the inner wall of the steel sleeve.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is an overall structure diagram of a construction structure of a covered-excavated top-down permanent steel pipe column according to an embodiment of the present invention;
fig. 2 is an installation structure diagram of the hydraulic jack of the embodiment of the present invention.
Detailed Description
A construction structure for covering and excavating a top-down permanent steel pipe column refers to fig. 1 and comprises a full-casing full-slewing drilling machine 10, a steel casing 20, a steel pipe column 30 and a reinforcement cage (not shown), wherein the full-casing full slewing drilling machine is used for hoisting the steel casing and the steel pipe column.
Specifically, the steel sleeve 20 is pressed down by the full-casing full-slewing drilling machine 10 in 360-degree slewing, and the steel sleeve 20 is pressed into a formed hole while slewing, so that the steel sleeve 20 is always ensured to be 3-5m ahead of the drilling depth in the process of digging and grabbing soil by the rotary drilling machine; in the process, the full-casing full-slewing drilling machine 10 stops pressing the steel casing 20 when drilling for 10-15m, detects the hole forming verticality by using an ultrasonic drilling detector, and corrects the verticality of the steel casing 20 by using a total station instrument at the same time, wherein the hole forming verticality is not more than three thousandths. The installation depth of the steel sleeve 20 is controlled to be 3m above the pile top of the pile foundation, so that the steel sleeve is prevented from being embedded into the pile foundation concrete to cause difficulty in dismantling and pulling. After the hole forming depth is below the steel sleeve 20, adding the prepared qualified slurry, drilling the drilled pile with the diameter of 2.5m, and adding the stabilizing liquid while drilling to keep the liquid level in the hole at a certain height so as to increase the pressure and ensure the quality of the steel sleeve 20. After the steel sleeve 20 is installed, the steel sleeve 20 is subjected to hole cleaning treatment, and concrete pouring is immediately performed on a pile foundation, wherein the concrete is super-delayed coagulation concrete, the slump during concrete pouring is 18cm-22cm, the concrete initial setting time is 30 hours in the embodiment, and the concrete pouring completion time and the steel pipe column 30 insertion operation time are considered.
Further, the steel reinforcement cage sets up steel casing 20 inner wall, specifically, the steel reinforcement cage adopts two spacer bar welding to in the steel casing 20 inner wall.
Further, a vertical sensor 405 and a hydraulic jack 50 are arranged on the steel pipe column 30, and a tool column is arranged at the top of the steel pipe column 30; specifically, the vertical sensors 40 are disposed at the top and the bottom of the steel pipe column 30, in this embodiment, the vertical sensors 40 are tilt sensors, the tilt sensors must be ensured to be in a horizontal state when being mounted on the steel pipe column 30, and the X/Y axis numbers of the wireless receiving displays of the tilt sensors are zeroed. The steel pipe column 30 is hoisted inside the steel sleeve 20 by adopting the full-casing full-slewing drilling machine 10, and the steel pipe column 30 is positioned inside the steel reinforcement cage, so that the steel reinforcement cage is positioned between the steel pipe column 30 and the steel sleeve 20. After the steel pipe is lowered to a set position, referring to fig. 2, 4 hydraulic jacks 50 are installed on the outer wall of the steel pipe column 30, and one end of each hydraulic jack 50 is installed on the inner wall of the steel casing 20, and the other end of each hydraulic jack abuts against the outer wall of the steel pipe column 30; the hydraulic jack 50 is provided with a steel wire rope or an iron chain and other chain ropes, so that the hydraulic jack 50 can be conveniently pulled out of the hole when being subsequently disassembled. In this embodiment, the four hydraulic jacks 50 are equally spaced along the circumferential direction of the steel pipe column 30, and the hydraulic jacks 50 are installed at positions close to the middle-lower portion of the steel pipe column 30 but higher than the level of the top surface of the pile foundation concrete. Further, will the instrument post sets up steel-pipe column 30 top, because steel-pipe column 30 design capital elevation lies in the scope of 0 ~ 10m below the former ground, the effect of instrument post is exactly supplementary steel-pipe column 30 and installs to design roof elevation, and the built-in steel cat ladder of instrument post makes things convenient for the staff to get into in the steel-pipe column 30, removes to the roof position after, dismantles the elevation with steel-pipe column 30 below the roof, accomplishes steel-pipe column 30 capital. In this embodiment, the diameter of the tool column is Φ 2100m, the wall thickness is 20mm, the tool column is combined with the top of the steel pipe column 30, and the tool column is 2.5-4 m above the ground plane.
The utility model discloses a vertical sensor and hydraulic jack's theory of operation does: when the verticality of the steel pipe column is detected and adjusted, the inclination angle sensor automatically detects the verticality of the steel pipe column, data are transmitted to the wireless receiving display, the stroke of four hydraulic jacks mounted on the steel pipe column is automatically adjusted according to the data on the wireless receiving display to correct the deviation, when the data reading of an X/Y axis in the wireless receiving display is zero, the steel pipe column is vertical, and the verticality check of the steel pipe column is successful.
Compared with the prior art, the utility model provides a lid digs construction structures of permanent steel-pipe column of top-down operation, the utility model discloses when installing the steel-pipe column, use the straightness condition of hanging down of perpendicular sensor real-time detection steel-pipe column to use hydraulic jack to realize automatic rectifying, guarantee that the straightness that hangs down of steel-pipe column reaches the design requirement. The utility model discloses a regulation and control to steel-pipe column vertical reading has realized the accurate location of steel-pipe column, and then has guaranteed to cover and dug the engineering quality and the security performance of doing the structure with one's head on.
The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.
Claims (9)
1. The utility model provides a construction structures of permanent steel-pipe column is dug to lid, steel casing pipe, steel-pipe column and be used for hoist and mount the full set of pipe full slewing drilling machine of steel casing pipe, steel-pipe column, the steel-pipe column sets up in the steel casing pipe, its characterized in that: a vertical sensor and a hydraulic jack are arranged on the steel pipe column, and the vertical sensor senses the verticality of the steel pipe column; and the hydraulic jack adjusts the position of the steel pipe column according to the verticality reading of the vertical sensor.
2. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 1, characterized in that: one end of the hydraulic jack is arranged on the steel pipe column, and the other end of the hydraulic jack props against the inner wall of the steel sleeve.
3. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 2, characterized in that: the number of the hydraulic jacks is four, and the four hydraulic jacks are arranged at equal intervals along the circumferential direction of the steel pipe column.
4. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 3, characterized in that: the hydraulic jack is positioned at the middle lower part of the steel pipe column.
5. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 4, characterized in that: the number of the vertical sensors is two, and the two vertical sensors are respectively arranged at the top and the bottom of the steel pipe column.
6. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 5, characterized in that: the vertical sensor is a tilt sensor.
7. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 6, characterized in that: and a chain rope is arranged on the hydraulic jack.
8. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 1, characterized in that: still include the instrument post, the instrument post sets up steel pipe column top.
9. The construction structure of the covered-excavated reversed-construction permanent steel pipe column according to claim 8, characterized in that: the steel reinforcement cage is arranged between the steel sleeve and the steel pipe column, and is welded on the inner wall of the steel sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021498501.4U CN212358284U (en) | 2020-07-23 | 2020-07-23 | Construction structure of permanent steel-pipe column of lid digs contrary process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021498501.4U CN212358284U (en) | 2020-07-23 | 2020-07-23 | Construction structure of permanent steel-pipe column of lid digs contrary process |
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| CN212358284U true CN212358284U (en) | 2021-01-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982828A (en) * | 2021-02-05 | 2021-06-18 | 中铁广州工程局集团深圳工程有限公司 | Steel pipe column and reinforcement cage integrated structure and construction method thereof |
| CN113107255A (en) * | 2021-04-12 | 2021-07-13 | 中国铁塔股份有限公司黑龙江省分公司 | Tower mast capital construction device |
| CN114277802A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Positioning construction structure of reverse construction method steel pipe structure column rear insertion method |
| CN114277803A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Reverse construction method steel pipe structure column rear insertion method positioning construction method |
-
2020
- 2020-07-23 CN CN202021498501.4U patent/CN212358284U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982828A (en) * | 2021-02-05 | 2021-06-18 | 中铁广州工程局集团深圳工程有限公司 | Steel pipe column and reinforcement cage integrated structure and construction method thereof |
| CN113107255A (en) * | 2021-04-12 | 2021-07-13 | 中国铁塔股份有限公司黑龙江省分公司 | Tower mast capital construction device |
| CN114277802A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Positioning construction structure of reverse construction method steel pipe structure column rear insertion method |
| CN114277803A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Reverse construction method steel pipe structure column rear insertion method positioning construction method |
| CN114277803B (en) * | 2021-12-13 | 2023-08-25 | 深圳市工勘岩土集团有限公司 | Post-insertion method positioning construction method for reverse construction method steel pipe structural column |
| CN114277802B (en) * | 2021-12-13 | 2023-08-25 | 深圳市工勘岩土集团有限公司 | Post-insertion method positioning construction structure for reverse construction method steel pipe structural column |
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