CN111962528A - Connecting device for detaching steel supports penetrating through underground engineering deep foundation pit and construction method - Google Patents
Connecting device for detaching steel supports penetrating through underground engineering deep foundation pit and construction method Download PDFInfo
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- CN111962528A CN111962528A CN202010960233.1A CN202010960233A CN111962528A CN 111962528 A CN111962528 A CN 111962528A CN 202010960233 A CN202010960233 A CN 202010960233A CN 111962528 A CN111962528 A CN 111962528A
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a connecting device for disassembling and connecting steel supports penetrating through an underground engineering deep foundation pit and a construction method, wherein the connecting device comprises a transverse upper steel supporting plate, a transverse lower steel supporting plate and two longitudinal steel supporting plates, a reinforcing assembly is arranged between the transverse upper steel supporting plate and the transverse lower steel supporting plate, the two longitudinal steel supporting plates are symmetrically and fixedly installed on the transverse upper steel supporting plate, the transverse lower steel supporting plate is positioned between the two longitudinal steel supporting plates, two installation cavities are symmetrically formed in the left end and the right end of the transverse lower steel supporting plate, a central rod is vertically and rotatably connected in each installation cavity, and a first gear is fixedly installed on each central rod.
Description
Technical Field
The invention relates to the technical field of underground engineering, in particular to a connecting device and a construction method for detaching a steel support penetrating through a deep foundation pit of underground engineering.
Background
Along with the continuous promotion of city underground space development dynamics and speed, the installation and demolish of deep basal pit supporting structure is great to underground works construction cycle and safety influence, and in the stage of demolising of foundation ditch bearing structure, whether measures such as the arrangement mode of changing the strut structure, support demolish time, structural deformation control are reasonable, serious major structure's engineering quality.
The connecting device that tears open after current deep basal pit steel shotcrete has that the installation is dismantled complicacy heavily, wastes time and energy, has reduced the speed and the process of construction.
In order to solve the problems, the invention provides a device for detaching and connecting steel supports penetrating through an underground engineering deep foundation pit and a construction method.
Disclosure of Invention
The invention aims to solve the defects that the existing connecting device for detaching the steel support of the deep foundation pit after the steel support is installed is complex and heavy in installation and detachment, wastes time and labor and reduces the speed and the progress of construction in the prior art, and provides the connecting device for detaching the steel support of the deep foundation pit penetrating through underground engineering and the construction method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a connecting device which penetrates through underground engineering and is disassembled after a steel support of a deep foundation pit comprises a transverse upper steel support plate, a transverse lower steel support plate and two longitudinal steel support plates, wherein a reinforcing component is arranged between the transverse upper steel support plate and the transverse lower steel support plate, the two longitudinal steel support plates are symmetrically and fixedly arranged on the transverse upper steel support plate, the transverse lower steel support plate is positioned between the two longitudinal steel support plates, two installation cavities are symmetrically formed in the left end and the right end of the transverse lower steel support plate, a central rod is vertically and rotatably connected in each installation cavity, a first gear is fixedly arranged on each central rod, an adjusting mechanism is arranged on each central rod, the first gear is meshed with a second gear, the lower end of the second gear is rotatably connected to the bottom end face of the installation cavity through a central shaft, and the upper end face of the central shaft is rotatably connected with a rotating rod, the other end of the rotating rod is rotatably connected with a sliding plate, the sliding plate is connected in an installation cavity in a sliding mode, two clamping rods are symmetrically and fixedly installed on one side of the sliding plate, which is far away from the rotating rod, the other end of each clamping rod penetrates through the side wall of the transverse lower steel supporting plate and is inserted into the side wall of the longitudinal steel supporting plate, clamping grooves corresponding to the clamping rods are formed in one sides, opposite to the longitudinal steel supporting plates, of the two clamping rods, each clamping rod abuts against the clamping grooves, a cavity is formed in the lower end of each longitudinal steel supporting plate, a servo motor is fixedly installed on the upper end face in the cavity, a second worm is fixedly installed at the output end of the servo motor, the lower end of the second worm is rotatably connected to the bottom end face of the cavity, a plurality of second worm wheels are equidistantly meshed, and a threaded rod is transversely inserted into the, the threaded rod both ends are rotated respectively and are connected on the inner wall of cavity, every equal threaded connection has the thread bush on the threaded rod, every the equal fixed mounting of lower terminal surface of thread bush has the connecting plate, the connecting plate deviates from the equal horizontal fixed mounting of one end of thread bush has the locating plate, the one end that the locating plate deviates from the connecting plate all runs through the lateral wall of vertical steel backup pad and extends to the external world, locating plate sliding connection is in the lateral wall of vertical steel backup pad, the lower extreme fixed mounting of vertical steel backup pad has the location awl.
Preferably, adjustment mechanism includes a worm, rotates handle and worm wheel, a worm wheel is fixed to be cup jointed on the top lateral wall of well core rod, a worm vertically alternates at the up end of horizontal lower steel support plate, a worm rotates to be connected in the upper wall of horizontal lower steel support plate, the lower extreme of a worm is provided with the worm.
Preferably, the worm is in meshed connection with the first worm wheel, the rotating handle is fixedly installed on the upper end face of the first worm, an anti-skidding sleeve is arranged on the rotating handle, and anti-skidding protrusions are arranged on the anti-skidding sleeve.
Preferably, supporting blocks are fixedly mounted on the opposite sides of the two longitudinal steel supporting plates, each supporting block is located under the corresponding transverse lower steel supporting plate and abuts against the bottom end face of the corresponding transverse lower steel supporting plate, and treading feet are fixedly mounted on the opposite sides of the two longitudinal steel supporting plates.
Preferably, the reinforcing assembly comprises a plurality of longitudinal reinforcing plates and a plurality of transverse reinforcing plates, the longitudinal reinforcing plates and the transverse reinforcing plates are perpendicular to each other and staggered, the transverse reinforcing plates and the longitudinal reinforcing plates are fixedly installed together through connecting pieces, and two fixing plates are arranged at the left end and the right end of each transverse reinforcing plate respectively.
Preferably, each fixing plate is fixedly installed on the side wall of the longitudinal steel support plate through the fixing plate, two fixing bolts are symmetrically arranged on each fixing plate, and each fixing bolt penetrates through the side wall of the fixing plate and is in threaded connection with the side wall of the longitudinal steel support plate.
The invention also discloses a construction method of the connecting device for detaching the steel support of the deep foundation pit penetrating through the underground engineering, which comprises the following steps:
the method comprises the following steps: inserting the longitudinal steel support plate into soil through a positioning cone at the lower end, and then applying downward pressure to the treading feet by using a stone hammer or a press machine to ensure that the lower end of the longitudinal steel support plate is completely inserted into the soil;
step two: starting a servo motor, wherein the servo motor drives a second worm to rotate through an output end so as to drive a second worm wheel to rotate, the second worm wheel can drive a threaded rod to rotate through rotation, so as to drive two threaded sleeves to move back to back, and the threaded sleeves can push a positioning plate to be inserted into soil through a connecting plate;
step three: the transverse lower steel support plate is transversely placed on the two support blocks, the rotating handle is rotated to further drive the first worm to rotate, the first worm drives the first worm wheel to rotate, the first worm wheel drives the central rod to rotate, the central rod drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives one end of the rotating rod to rotate, the other end of the rotating rod drives the sliding plate to move in a direction away from the second gear, the clamping rod is abutted into the clamping groove, and therefore the transverse lower steel support plate is conveniently and fixedly installed between the two longitudinal steel support plates;
step four: the reinforcing assembly is placed between the transverse upper steel support plate and the transverse lower steel support plate, and the fixing plate is fixedly installed on the side wall of the longitudinal steel support plate through the fixing bolt, so that the fixing and the supporting of the two longitudinal steel support plates are completed.
Preferably, two sections of opposite threads are symmetrically arranged on the threaded rod.
Compared with the prior art, the invention has the beneficial effects that:
the complexity of the mounting and dismounting of the connecting device dismounted after the steel support of the deep foundation pit is reduced, time and labor are saved, and the speed and progress of construction are accelerated.
Drawings
FIG. 1 is a schematic structural diagram of the front side of a connecting device which is provided by the invention and used for detaching a steel support of a deep foundation pit penetrating through underground engineering;
FIG. 2 is a schematic front structural view of the lower end part of a longitudinal steel support plate in the connecting device for the rear dismantling of a deep foundation pit steel support penetrating through underground engineering, which is provided by the invention;
fig. 3 is an enlarged schematic view of a portion a of fig. 1.
In the figure: the device comprises a stepping foot 1, a horizontal lower steel support plate 2, a central rod 3, a first gear 4, a first worm wheel 5, a first worm 6, a rotary handle 7, a second gear 8, a rotary rod 9, a sliding plate 10, a longitudinal steel support plate 11, a clamping groove 12, a clamping rod 13, a supporting block 14, a central shaft 15, a second worm 16, a connecting plate 17, a second worm wheel 18, a servo motor 19, a fixing bolt 20, a threaded rod 21, a threaded sleeve 22, a positioning plate 23, a fixing plate 24, a positioning cone 25, a horizontal upper steel support plate 26, a vertical reinforcing plate 27, a connecting piece 28 and a horizontal reinforcing plate 29.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, a connecting device for a deep foundation pit steel support through underground engineering to be disassembled later comprises a transverse upper steel support plate 26, a transverse lower steel support plate 2 and two longitudinal steel support plates 11, a reinforcing assembly is arranged between the transverse upper steel support plate 26 and the transverse lower steel support plate 2, the reinforcing assembly comprises a plurality of longitudinal reinforcing plates 27 and a plurality of transverse reinforcing plates 29, the longitudinal reinforcing plates 27 and the transverse reinforcing plates 29 are vertically staggered, the transverse reinforcing plates 29 and the longitudinal reinforcing plates 27 are fixedly installed together through connecting pieces 28, two fixing plates 24 are respectively arranged at the left end and the right end of each transverse reinforcing plate 29, each fixing plate 24 is fixedly installed on the side wall of the longitudinal steel support plate 11 through the fixing plate 24, two fixing bolts 20 are symmetrically arranged on each fixing plate 24, each fixing bolt 20 penetrates through the side wall of the fixing plate 24 and is in the side wall of the longitudinal steel support plate 11 through thread connection, the opposite sides of the two longitudinal steel support plates 11 are fixedly provided with support blocks 14, each support block 14 is positioned under the transverse lower steel support plate 2 and is abutted against the bottom end face of the transverse lower steel support plate 2, the opposite sides of the two longitudinal steel support plates 11 are fixedly provided with treadles 1, the two longitudinal steel support plates 11 are symmetrically and fixedly arranged on the transverse upper steel support plate 26, the transverse lower steel support plate 2 is positioned between the two longitudinal steel support plates 11, the left end and the right end of the transverse lower steel support plate 2 are symmetrically provided with two installation cavities, each installation cavity is vertically and rotatably connected with a central rod 3, each central rod 3 is fixedly provided with a gear 4, each central rod 3 is provided with an adjusting mechanism, each adjusting mechanism comprises a first worm 6, a rotating handle 7 and a first worm wheel 5, the first worm wheel 5 is fixedly sleeved on the upper side wall of the central rod 3, the first worm 6 vertically penetrates through the upper end face of the transverse lower steel support plate 2, the first worm 6 is rotatably connected in the upper side wall of the transverse lower steel support plate 2, the lower end of the first worm 6 is provided with a worm, the worm is meshed and connected with the first worm wheel 5, the rotating handle 7 is fixedly arranged on the upper end surface of the first worm 6, the rotating handle 7 is provided with an anti-skidding sleeve, the anti-skidding sleeve is provided with an anti-skidding bulge, the first gear 4 is meshed and connected with the second gear 8, the lower end of the second gear 8 is rotatably connected on the bottom end surface of the installation cavity through a central shaft 15, the upper end surface of the central shaft 15 is rotatably connected with a rotating rod 9, the other end of the rotating rod 9 is rotatably connected with a sliding plate 10, the sliding plate 10 is slidably connected in the installation cavity, one side of the sliding plate 10, which is far away from the rotating rod 9, is symmetrically and fixedly provided with two clamping rods 13, the other end of each clamping rod 13 penetrates through the side wall of the transverse lower steel support plate 2 and, each clamping rod 13 is propped against the clamping groove 12, the lower end of each longitudinal steel supporting plate 11 is provided with a cavity, the upper end surface in the cavity is fixedly provided with a servo motor 19, the output end of the servo motor 19 is fixedly provided with a second worm 16, the lower end of the second worm 16 is rotatably connected to the bottom end surface of the cavity, the second worm 16 is engaged and connected with a plurality of second worm wheels 18 at equal intervals, the center of each second worm wheel 18 is transversely inserted with a threaded rod 21, two sections of opposite threads are symmetrically arranged on the threaded rod 21, the two ends of the threaded rod 21 are respectively rotatably connected to the inner wall of the cavity, each threaded rod 21 is in threaded connection with a threaded sleeve 22, the lower end surface of each threaded sleeve 22 is fixedly provided with a connecting plate 17, one end of the connecting plate 17, which is far away from the threaded sleeve 22, is transversely and fixedly provided with a positioning plate 23, one end of the positioning plate 23, the positioning plate 23 is connected in the side wall of the longitudinal steel support plate 11 in a sliding manner, and the lower end of the longitudinal steel support plate 11 is fixedly provided with a positioning cone 25;
the invention also discloses a construction method of the connecting device for detaching the steel support of the deep foundation pit penetrating through the underground engineering, which comprises the following steps:
the method comprises the following steps: firstly, inserting the longitudinal steel support plate 11 into soil through a positioning cone 25 at the lower end, and then using a stone hammer or a press machine to press the treading foot 1 downwards to enable the lower end of the longitudinal steel support plate 11 to be completely inserted into the soil;
step two: starting the servo motor 19, wherein the servo motor 19 drives the second worm 16 to rotate through the output end so as to drive the second worm wheel 18 to rotate, the second worm wheel 18 rotates to drive the threaded rod 21 to rotate so as to drive the two threaded sleeves 22 to move back to back, and the threaded sleeves 22 push the positioning plate 23 to be inserted into soil through the connecting plate 17;
step three: the transverse downward steel support plate 2 is transversely placed on the two support blocks 14, the rotating handle 7 is rotated to further drive the first worm 6 to rotate, the first worm 6 drives the first worm wheel 5 to rotate, the first worm wheel 5 drives the central rod 3 to rotate, the central rod 3 drives the first gear 4 to rotate, the first gear 4 drives the second gear 8 to rotate, the second gear 8 drives one end of the rotating rod 9 to rotate, the other end of the rotating rod 9 can drive the sliding plate 10 to move towards the direction deviating from the second gear 8, the clamping rod 13 is pressed into the clamping groove 12, and the transverse downward steel support plate 2 is conveniently and fixedly installed between the two longitudinal steel support plates 11;
step four: the reinforcing component is placed between the transverse upper steel support plate 26 and the transverse lower steel support plate 2, and then the fixing plate 24 is fixedly installed on the side wall of the longitudinal steel support plate 11 through the fixing bolt 20, so that the fixing and the supporting of the two longitudinal steel support plates 11 are completed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A connecting device penetrating through underground engineering and disassembled after steel supports of a deep foundation pit comprises a transverse upper steel support plate (26), a transverse lower steel support plate (2) and two longitudinal steel support plates (11), and is characterized in that a reinforcing assembly is arranged between the transverse upper steel support plate (26) and the transverse lower steel support plate (2), the two longitudinal steel support plates (11) are symmetrically and fixedly installed on the transverse upper steel support plate (26), the transverse lower steel support plate (2) is positioned between the two longitudinal steel support plates (11), two installation cavities are symmetrically formed in the left end and the right end of the transverse lower steel support plate (2), each installation cavity is vertically and rotatably connected with a central rod (3), a first gear (4) is fixedly installed on each central rod (3), an adjusting mechanism is arranged on the central rod (3), and the first gear (4) is meshed with a second gear (8), the lower extreme of No. two gear (8) is rotated through center pin (15) and is connected on the bottom face of installation cavity, the up end of center pin (15) is rotated and is connected with dwang (9), the other end of dwang (9) is rotated and is connected with slide (10), slide (10) sliding connection is in the installation cavity, slide (10) deviate from one side symmetry fixed mounting of dwang (9) have two kellies (13), every the other end of kellies (13) all runs through the lateral wall of horizontal lower steel support plate (2) and inserts in the lateral wall of vertical steel support plate (11), two draw-in grooves (12) corresponding with kellies (13) are all seted up to one side that vertical steel support plate (11) is relative, every kellies (13) all supports in draw-in groove (12), every the cavity has all been seted up to the lower extreme of vertical steel support plate (11), the upper end face in the cavity is fixedly provided with a servo motor (19), the output end of the servo motor (19) is fixedly provided with a second worm (16), the lower end of the second worm (16) is rotatably connected to the bottom end face of the cavity, a plurality of second worm wheels (18) are meshed at equal intervals on the second worm (16), a threaded rod (21) is transversely inserted into the center of each second worm wheel (18), the two ends of each threaded rod (21) are respectively rotatably connected to the inner wall of the cavity, each threaded rod (21) is in threaded connection with a threaded sleeve (22), the lower end face of each threaded sleeve (22) is fixedly provided with a connecting plate (17), one end of each connecting plate (17), which deviates from the threaded sleeve (22), is transversely and fixedly provided with a positioning plate (23), one end of each positioning plate (23), which deviates from the connecting plate (17), penetrates through the side wall of the longitudinal steel supporting plate (11) and extends to the outside, the positioning plate (23) is connected in the side wall of the longitudinal steel supporting plate (11) in a sliding mode, and a positioning cone (25) is fixedly mounted at the lower end of the longitudinal steel supporting plate (11).
2. The connecting device for the deep foundation pit steel support through underground engineering to be dismantled later according to claim 1, characterized in that, adjustment mechanism includes a worm (6), rotates handle (7) and a worm wheel (5), a worm wheel (5) is fixed to be cup jointed on the top lateral wall of well core rod (3), a worm (6) vertically alternates at the up end of horizontal lower steel support plate (2), a worm (6) rotates to be connected in the last lateral wall of horizontal lower steel support plate (2), the lower extreme of a worm (6) is provided with the worm.
3. The connecting device for the later dismounting of the steel support of the deep foundation pit penetrating through underground engineering according to claim 2, characterized in that the worm is meshed and connected with the first worm wheel (5), the rotating handle (7) is fixedly installed on the upper end surface of the first worm (6), the rotating handle (7) is provided with an anti-skid sleeve, and the anti-skid sleeve is provided with an anti-skid bulge.
4. The connecting device for the rear dismantling of the steel support of the deep foundation pit penetrating through the underground engineering as claimed in claim 1, wherein the opposite sides of the two longitudinal steel support plates (11) are fixedly provided with support blocks (14), each support block (14) is positioned under the transverse lower steel support plate (2) and is abutted against the bottom end face of the transverse lower steel support plate (2), and the opposite sides of the two longitudinal steel support plates (11) are fixedly provided with treading feet (1).
5. The connecting device for the later dismantling of the steel supports of the deep foundation pit penetrating through the underground engineering as claimed in claim 1, wherein the reinforcing assembly comprises a plurality of longitudinal reinforcing plates (27) and a plurality of transverse reinforcing plates (29), the plurality of longitudinal reinforcing plates (27) and the plurality of transverse reinforcing plates (29) are vertically staggered, the transverse reinforcing plates (29) and the longitudinal reinforcing plates (27) are fixedly installed together through connecting members (28), and two fixing plates (24) are respectively arranged at the left end and the right end of each transverse reinforcing plate (29).
6. The connecting device for the rear dismantling of the steel support of the deep foundation pit penetrating through the underground engineering as claimed in claim 5, wherein each fixing plate (24) is fixedly installed on the side wall of the longitudinal steel support plate (11) through the fixing plate (24), two fixing bolts (20) are symmetrically arranged on each fixing plate (24), and each fixing bolt (20) penetrates through the side wall of the fixing plate (24) and is in threaded connection with the side wall of the longitudinal steel support plate (11).
7. The construction method of the connecting device for the later dismantling of the steel support of the deep foundation pit penetrating through the underground engineering according to the claim 5, is characterized by comprising the following steps:
the method comprises the following steps: firstly, inserting a longitudinal steel support plate (11) into soil through a positioning cone (25) at the lower end, and then downwards applying pressure to a treading foot (1) by using a stone hammer or a press machine to ensure that the lower end of the longitudinal steel support plate (11) is completely inserted into the soil;
step two: the servo motor (19) is started, the servo motor (19) drives the second worm (16) to rotate through the output end, the second worm wheel (18) is further driven to rotate, the second worm wheel (18) rotates to drive the threaded rod (21) to rotate, the two threaded sleeves (22) are further driven to move back to back, and the threaded sleeves (22) push the positioning plate (23) to be inserted into soil through the connecting plate (17);
step three: transversely placing a transversely lower steel support plate (2) on two support blocks (14), rotating a rotating handle (7), further driving a first worm (6) to rotate, driving a first worm wheel (5) to rotate by the first worm (6), driving a central rod (3) to rotate by the first worm wheel (5), driving a first gear (4) to rotate by the central rod (3), driving a second gear (8) to rotate by the first gear (4), driving one end of a rotating rod (9) to rotate by the second gear (8), driving a sliding plate (10) to move towards a direction deviating from the second gear (8) by the other end of the rotating rod (9), enabling a clamping rod (13) to abut into a clamping groove (12), and further facilitating the fixedly mounting of the transversely lower steel support plate (2) between two longitudinal steel support plates (11);
step four: and the reinforcing component is placed between the transverse upper steel support plate (26) and the transverse lower steel support plate (2), and then the fixing plate (24) is fixedly arranged on the side wall of the longitudinal steel support plate (11) through the fixing bolt (20), so that the fixing and the supporting of the two longitudinal steel support plates (11) are completed.
8. The connecting device for the back disassembly of the steel support of the deep foundation pit penetrating through the underground engineering as claimed in claim 1, wherein two sections of opposite threads are symmetrically arranged on the threaded rod (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960233.1A CN111962528A (en) | 2020-09-14 | 2020-09-14 | Connecting device for detaching steel supports penetrating through underground engineering deep foundation pit and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960233.1A CN111962528A (en) | 2020-09-14 | 2020-09-14 | Connecting device for detaching steel supports penetrating through underground engineering deep foundation pit and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN111962528A true CN111962528A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010960233.1A Pending CN111962528A (en) | 2020-09-14 | 2020-09-14 | Connecting device for detaching steel supports penetrating through underground engineering deep foundation pit and construction method |
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| CN (1) | CN111962528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112797263A (en) * | 2021-01-21 | 2021-05-14 | 中国科学院西北生态环境资源研究院 | Anti-freezing pulling supporting leg and anti-freezing pulling method thereof |
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| JPH11280073A (en) * | 1998-03-27 | 1999-10-12 | Nsp Corp | Cut beam support |
| CN106638612A (en) * | 2015-10-28 | 2017-05-10 | 上海十三冶建设有限公司 | Simple foundation pit supporting system and construction method thereof |
| CN207484489U (en) * | 2017-10-16 | 2018-06-12 | 郑州大学 | A kind of foundation pit side-wall strengthens safeguard structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112797263A (en) * | 2021-01-21 | 2021-05-14 | 中国科学院西北生态环境资源研究院 | Anti-freezing pulling supporting leg and anti-freezing pulling method thereof |
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Application publication date: 20201120 |