CN217651815U

CN217651815U - Foundation pit supporting structure in shaft construction

Info

Publication number: CN217651815U
Application number: CN202221261270.4U
Authority: CN
Inventors: 钟彩军; 李平; 苏召乐; 刘一丹; 赵婷
Original assignee: Beijing Tongchengda Water Construction Co ltd
Current assignee: Beijing Tongchengda Water Construction Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-25
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to a shaft construction technology's field specifically discloses a pit supporting structure in shaft construction, and it includes annular supporting frame, annular supporting frame includes a plurality of linking boards that connect gradually, every adjacent two be provided with a backplate between the linking board, the backplate is close to adjacent one side of backup pad all rotates and is connected with the connecting rod, be provided with the locking mechanism who is used for locking the connecting rod of linking board both sides simultaneously on the linking board. This application has improved the effect of strutting efficiency of shaft foundation ditch.

Description

Foundation pit supporting structure in shaft construction

Technical Field

The application relates to the field of shaft construction technology, especially, relate to a foundation ditch supporting construction in shaft construction.

Background

The vertical shaft is a well-shaped pipeline which is widely applied to water conservancy and hydropower engineering and used for water taking, water diversion, ventilation, air supply and the like. Because the hole wall of shaft is upright, for the condition emergence that the lateral wall soil layer collapses appears in the prevention foundation ditch lateral wall, the foundation ditch often need use supporting construction to strut the lateral wall of foundation ditch and enclose the fender in the work progress.

In the related art, a supporting structure of a shaft pit comprises an annular supporting frame, wherein the annular supporting frame comprises a plurality of connecting plates which are connected with each other through bolts; a supporting plate is arranged between every two adjacent connecting plates, and the supporting plates and the connecting plates are enclosed together to form a supporting cylinder for separating the side wall of the foundation pit. And angle irons are arranged between the supporting and protecting plate and the adjacent connecting plate, one right-angle edge of each angle iron is in threaded connection with the supporting and protecting plate through a bolt, and the other right-angle edge of each angle iron is in threaded connection with the connecting plate through a bolt.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the installation of the fender board of linking up the fishplate bar both sides is fixed, the staff need use bolt and angle bar one by one will prop up the backplate and lock on the linking up fishplate bar, and the process of screwing up a plurality of bolts is consuming time longer, makes the efficiency of strutting of shaft foundation ditch not high.

SUMMERY OF THE UTILITY MODEL

In order to improve the lower problem of the efficiency of strutting of shaft foundation ditch, this application provides a foundation ditch supporting construction in shaft construction.

The application provides a foundation ditch supporting construction adopts following technical scheme in shaft construction:

the utility model provides a foundation ditch supporting construction in shaft construction, includes annular supporting frame, annular supporting frame includes a plurality of links up the fishplate bar that connects gradually, every adjacent two be provided with a backplate between the fishplate bar, it is close to adjacent to strut the one side of fishplate bar all rotates and is connected with the connecting rod, be provided with the locking mechanism who is used for locking the connecting rod of fishplate bar both sides simultaneously on the fishplate bar.

Through adopting above-mentioned technical scheme, when the staff carries out the installation between backplate and the linkage plate fixed, the staff rotates the connecting rod on the supporting plate of linkage plate both sides earlier and aligns, then the staff adjusts locking mechanism, carries out synchronous locking to two connecting rods through locking mechanism, can realize the high-speed joint of two backplate on the linkage plate to shortened the man-hour of screwing up a plurality of bolts in proper order by a wide margin, the effectual efficiency of strutting of shaft foundation ditch that has improved.

Optionally, the locking mechanism includes a locking rod, a fixed block, and a locking assembly for locking the locking rod to the connecting plate, two connecting rods are both provided with through holes, and the locking rod penetrates through the two through holes; the fixed block fixed connection be in the one end that the linkage plate was kept away from to the locking pole, just be located two the one end of foundation ditch lateral wall is kept away from to the connecting rod, the fixed block laminates each other with one side that a connecting rod is in opposite directions.

Through adopting above-mentioned technical scheme, the staff rotates the connecting rod of linkage plate both sides earlier to make two connecting rods align each other, then the staff runs through two connecting rods with the locking pole, then through the locking subassembly with the locking pole locking on linkage plate, the fixed block laminates with one side that a connecting rod is in opposite directions each other this moment, and two connecting rods are difficult to take place to drop from linkage plate under the spacing of locking pole, fixed block and linkage plate, thereby realized two connecting rods and linkage plate's high-speed joint.

Optionally, the locking assembly includes two insertion blocks, a positioning groove is formed in one side surface of the connecting plate away from the side wall of the foundation pit, mounting grooves are symmetrically formed in one set of two opposite side walls of the positioning groove, the two insertion blocks are slidably mounted in the two mounting grooves one by one, the two insertion blocks slide along the directions close to or away from each other, elastic members are arranged on the sides of the two insertion blocks away from each other, and one ends of the elastic members away from the adjacent insertion blocks are connected with the side walls of the mounting grooves; jacks for the two insertion blocks to be inserted one by one are symmetrically formed on the periphery of the locking rod.

By adopting the technical scheme, the locking rod penetrates through the two connecting rods and extends into the positioning groove, and in the process that the locking rod continuously extends into the positioning groove, the locking rod firstly arranges the two insertion blocks, so that the two insertion blocks are far away from each other, and the two elastic pieces are in a compressed state; when the locking pole that moves continuously aligns the inserted block at its jack, the inserted block inserts in the jack under the restoring force effect of elastic component to make the locking pole be difficult to take place to remove under the grafting of inserted block, thereby realized that the locking pole is located the quick locking location on the linkage plate.

Optionally, the distance between the opposite side surfaces of the two insertion blocks gradually decreases along the direction from the connecting plate to the side wall of the foundation pit.

Through adopting above-mentioned technical scheme, because the interval between the two inserted blocks lateral surface in opposite directions reduces along the direction of linking up board to foundation ditch lateral wall gradually to when the staff of being convenient for inserts the constant head tank with the lock pole, the lock pole can be quick insert to between two inserted blocks, thereby it is fixed that two inserted blocks of being convenient for carry out the locking of lock pole.

Optionally, a shifting lever is arranged on one side, away from the side wall of the foundation pit, of the insertion block, a long hole communicated with the mounting groove is formed in the connection plate, the extending direction of the long hole is consistent with the extending direction of the mounting groove, and one end of the shifting lever penetrates through an inner cavity of the long hole.

Through adopting above-mentioned technical scheme, when the staff need demolish supporting construction, the staff stirred two driving levers, can order about two inserted blocks and keep away from each other to the staff of being convenient for carries out the dismantlement work of a backplate.

Optionally, the side walls of the supporting and protecting plates are all provided with accommodating grooves for accommodating the connecting rods.

Through adopting above-mentioned technical scheme, when the supporting plate is in unused state, the connecting rod on the supporting plate is acceptd in the holding tank, and the connecting rod is difficult for receiving external environmental pollution this moment to the staff of being convenient for carries out the save of a backplate.

Optionally, a support plate is fixedly mounted on the connection plate, and when one side of the connection rod is attached to the upper end face of the support plate, the through hole in the connection rod is opposite to the positioning groove.

Through adopting above-mentioned technical scheme, the staff carries out the prepositioning of two connecting rods through the backup pad to be convenient for the staff penetrates the locking pole to two perforation fast, the effectual installation effectiveness who improves a backplate.

Optionally, the connection plate comprises a plurality of support portions, and a fixing bolt for connecting the two support portions is arranged between two adjacent support portions.

Through adopting above-mentioned technical scheme, at the successive layer excavation in-process of shaft, the staff carries out the connection of multistage supporting part in proper order to after the one deck of shaft is accomplished in every excavation, the staff can change the operation of strutting on layer after the supporting part on this layer of installation, thereby the effectual operation safety of guaranteeing the construction.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the worker firstly penetrates through the through holes in the two connecting rods, then locks the locking rods on the connecting plate through the two inserting blocks, and then can simultaneously lock the two protective plates on the connecting plate, so that the supporting efficiency of the shaft foundation pit is effectively improved;

2. the two shifting rods are shifted by a worker to be away from each other, and the two inserting blocks can be driven to be away from each other through the two shifting rods, so that the two inserting blocks can release the locking of the locking rod, and the worker can conveniently detach the support plate;

3. the staff carries out the prepositioning of two connecting rods through the backup pad to be convenient for the staff penetrates the locking pole to two perforation fast, the effectual installation effectiveness who improves a backplate.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

figure 2 is a schematic view of the installation of the connector tiles and the brace;

FIG. 3 is an exploded view of the connector tiles, brace plates and locking bars;

figure 4 is a schematic view in partial cross-section of a connector tile.

Reference numerals: 1. an annular support frame; 2. supporting a guard plate; 21. accommodating grooves; 3. a connecting rod; 31. perforating; 4. angle iron; 5. a lock lever; 6. a fixed block; 7. a locking assembly; 71. inserting a block; 8. an elastic member; 81. a spring; 9. a deflector rod; 10. a support plate; 11. a ring-shaped crown beam; 12. a connector tile; 121. a support portion; 122. positioning a groove; 123. mounting grooves; 124. and (4) a long hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses underground structure in shaft construction. Referring to fig. 1 and 2, the foundation pit supporting structure in shaft construction comprises an annular supporting frame 1, the annular supporting frame 1 comprises an annular crown beam 11 poured at a shaft opening of a shaft and a plurality of vertically arranged connecting plates 12, one side, facing an inner cavity of the shaft, of the annular crown beam 11 is embedded with a plurality of embedded bolts (not shown in the figure) in an annular mode, and the plurality of connecting plates 12 are sequentially installed on the bottom surface of the annular crown beam 11 through the embedded bolts. A supporting and protecting plate 2 is arranged between every two adjacent connecting plates 12, and the supporting and protecting plates 2 and the connecting plates 12 jointly form a foundation pit side wall supporting and protecting wall.

Referring to fig. 1 and 2, a holding groove 21 is formed in one side of each support plate 2 close to the adjacent joint plate 12, a connecting rod 3 is rotatably connected to the inner bottom wall of each holding groove 21 through a rotating shaft, the rotating axis of each connecting rod 3 is perpendicular to the vertical direction of each joint plate 12, and each connecting rod 3 is rotatably accommodated in the holding groove 21. In order to improve the connection stability between the connecting plate 12 and the support plate 2 and between two adjacent upper and lower support plates 2. In this embodiment, two adjacent upper and lower guard plates 2 are connected by locking through connecting bolts and connecting nuts, and two connecting rods 3 are arranged at the height of the side of the guard plate 2 facing the adjacent connecting plate 12. The connecting plate 12 comprises a plurality of sections of supporting parts 121, wherein angle irons 4 are welded on one opposite sides of the two adjacent sections of supporting parts 121, and the two angle irons 4 are connected in a locking manner through fixing bolts and fixing nuts. The number of the supporting parts 121 is determined according to the excavation depth of the shaft, the height of the supporting parts 121 is consistent with that of the supporting plates 2, and two locking mechanisms which correspond to the two connecting rods 3 on the adjacent supporting plates 2 one by one are arranged on the supporting parts 121.

Referring to fig. 2 and 3, locking mechanism includes locking pole 5, fixed block 6 and is used for locking pole 5 locking subassembly 7 on joining plate 12, the one end of joining plate 12 is kept away from at locking pole 5 to fixed block 6 integrated into one piece, perforation 31 that supplies locking pole 5 to run through is all seted up to the week side of the one end that connecting rod 3 kept away from its articulated axis, the bore of perforation 31 is less than the vertical section of fixed block 6, the breach of mutually supporting is all seted up to the terminal surface that its articulated axis was kept away from to two adjacent connecting rods 3.

When the worker installs the support plates 2 on both sides of the connecting plate 12, the worker firstly rotates the two corresponding connecting rods 3, so that the through holes 31 of the two connecting rods are aligned with each other, and the side surfaces of the gaps of the two connecting rods 3 are attached to each other; then the staff runs through two perforation 31 with locking pole 5, then the staff passes through locking subassembly 7 with locking pole 5 locking on the supporting part 121 of linkage plate 12, and two connecting rods 3 are spacing between fixed block 6 and linkage plate 12 by fixed block 6 and locking pole 5 this moment, can realize the quick connection between two backplate 2 and linkage plate 12.

Referring to fig. 3 and 4, in order to realize the quick locking of the locking rod 5 on the joint plate 12, the locking assembly 7 includes two insertion blocks 71, one side of the supporting part 121 far from the side wall of the foundation pit is provided with a positioning groove 122 in splicing adaptation with the locking rod 5, the positioning groove 122 is symmetrically provided on a set of two opposite side walls along the height direction of the supporting part 121, two insertion blocks 71 are slidably mounted in the two installation grooves 123 one by one, and the two insertion blocks 71 slide along the direction close to or far away from each other, the distance between the opposite sides of the two insertion blocks 71 gradually decreases along the direction from the joint plate 12 to the side wall of the foundation pit, the insertion holes for the two insertion blocks 71 to be spliced one by one are symmetrically provided around the locking rod 5. The two insertion blocks 71 are provided with an elastic member 8 at a side away from each other, in this embodiment, the elastic member 8 is a spring 81, in other embodiments, the elastic member 8 may also be a spring plate, a high-elastic rubber pad, or the like, and one end of the spring 81 is bonded to the insertion block 71 and the other end is bonded to a side wall of a mounting groove 123.

When the worker inserts the lock lever 5 into the positioning groove 122, the peripheral side of the lock lever 5 presses the inclined surfaces of the two insertion blocks 71, so that the two insertion blocks 71 are separated from each other, and the two springs 81 are in a compressed state; when the insertion hole of the locking rod 5 is aligned with the insertion block 71, the insertion block 71 is inserted into the insertion hole by the restoring force of the spring 81, so that the locking rod 5 is difficult to move under the insertion of the insertion block 71, and the quick locking positioning of the locking rod 5 on the connecting plate 12 is realized.

Referring to fig. 3 and 4, in order to facilitate the alignment of the worker with the through holes 31 of the two connecting rods 3, the support plate 10 is horizontally welded to a side surface of the support portion 121 away from the foundation pit, and when the bottom surfaces of the two connecting rods 3 are both attached to the upper end surface of the support plate 10, the through holes 31 of the two connecting rods 3 are aligned with the positioning grooves 122.

Referring to fig. 3 and 4, in order to facilitate the workers to dismantle the supporting structure after the construction is completed, two strip holes 124 communicated with the two mounting grooves 123 one by one are formed in the supporting portion 121, the extending direction of the strip holes 124 is consistent with the extending direction of the mounting grooves 123, a shifting rod 9 is screwed on one side of the insertion block 71, which is far away from the side wall of the foundation pit, and one end of the shifting rod 9 penetrates through an inner cavity extending out of the strip holes 124. When the supporting structure is disassembled and assembled, the worker can move the two shifting rods 9 to separate the two insertion blocks 71 from each other, so that the two insertion blocks 71 can be released to lock and fix the locking rod 5.

In other embodiments, the locking assembly 7 includes a sliding block and a sliding rail vertically fixed on the supporting portion 121 far away from the side wall of the foundation pit, the sliding block is slidably disposed on the sliding rail along the vertical direction, and a locking groove for inserting the lower end of the sliding block is formed on the peripheral side of the locking rod 5. The supporting portion 121 is provided with a limiting groove at the lower end of the slide rail. After the staff runs through two perforation 31 with locking pole 5, the staff inserts the spacing groove with the one end of keeping away from fixed block 6 of locking pole 5, then during the staff inserted the locking groove along slide rail slip slider and the lower extreme that makes the slider to make the stable locking of locking pole 5 in spacing groove department.

The implementation principle of the foundation pit supporting structure in the shaft construction of the application is as follows: the staff carries out the successive layer excavation of shaft with per three meters's degree of depth, and after the staff accomplished the excavation work of a certain layer of shaft, the staff carries out the installation of the supporting part 121 on this layer earlier through fixing bolt and fixation nut to make the length of joint board 12 prolong to in this layer, then the staff carries out the installation of this layer between backplate 2 and the joint board 12 and fixes.

When installing, the staff rotates a set of connecting rod 3 on the supporting plate 2 of linkage plate 12 both sides earlier and aligns, then the staff runs through two perforation 31 with locking pole 5, then inserts locking pole 5 in the constant head tank 122 again. After the locking rod 5 is inserted into the positioning groove 122, the insertion hole on the locking rod 5 is aligned with the insertion block 71, and the insertion block 71 is inserted into the insertion hole under the action of the restoring force of the spring 81, so that the locking rod 5 is difficult to move under the insertion of the insertion block 71, and the locking rod 5 is quickly locked and positioned on the connecting plate 12; and then, the worker connects the supporting plate 2 on the layer with the supporting plate 2 on the upper layer of the foundation pit through the connecting bolt and the connecting nut, and the stable supporting of the vertical shaft foundation pit can be completed.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a foundation ditch supporting construction in shaft construction, includes annular braced frame (1), annular braced frame (1) includes a plurality of linkage plate (12) that connect gradually, every adjacent two be provided with between linkage plate (12) and prop up backplate (2), its characterized in that: one side of the supporting and protecting plate (2) close to the adjacent connecting plate (12) is rotatably connected with a connecting rod (3), and a locking mechanism used for locking the connecting rods (3) on two sides of the connecting plate (12) simultaneously is arranged on the connecting plate (12).

2. The foundation pit supporting structure in shaft construction according to claim 1, wherein: the locking mechanism comprises a locking rod (5), a fixing block (6) and a locking assembly (7) used for locking the locking rod (5) on the connecting plate (12), through holes (31) are formed in the two connecting rods (3), and the locking rod (5) penetrates through the through holes (31); the fixing block (6) is fixedly connected to one end, far away from the connecting plate (12), of the locking rod (5).

3. The foundation pit supporting structure in shaft construction according to claim 2, wherein: the locking assembly (7) comprises two insertion blocks (71), one side surface, far away from the side wall of the foundation pit, of the connecting plate (12) is provided with a positioning groove (122), two opposite side walls of the positioning groove (122) are symmetrically provided with mounting grooves (123), the two insertion blocks (71) are slidably mounted in the two mounting grooves (123) one by one, and the two insertion blocks (71) slide along the directions close to or far away from each other; one sides, far away from each other, of the two insertion blocks (71) are connected with elastic pieces (8), and the elastic pieces (8) are connected with the side walls of the mounting grooves (123); jacks for the two insertion blocks (71) to be inserted one by one are symmetrically formed in the peripheral side of the locking rod (5).

4. The foundation pit supporting structure in shaft construction according to claim 3, wherein: the distance between the opposite side surfaces of the two insertion blocks (71) is gradually reduced along the direction from the connection plate (12) to the side wall of the foundation pit.

5. The foundation pit supporting structure in shaft construction according to claim 4, wherein: the connecting plate (12) is provided with a long hole (124) communicated with the mounting groove (123), the extending direction of the long hole (124) is consistent with the extending direction of the mounting groove (123), one side, away from the side wall of the foundation pit, of the inserting block (71) is provided with a shifting lever (9), and one end of the shifting lever (9) penetrates through an inner cavity extending out of the long hole (124).

6. The foundation pit supporting structure in shaft construction according to claim 1, wherein: the side wall of the supporting and protecting plate (2) is provided with accommodating grooves (21) for accommodating the connecting rods (3).

7. The foundation pit supporting structure in shaft construction according to claim 3, wherein: fixed mounting has backup pad (10) on linkage plate (12), works as one side of connecting rod (3) with when the up end of backup pad (10) is laminated mutually, perforation (31) on connecting rod (3) just to constant head tank (122).

8. The foundation pit supporting structure in shaft construction according to claim 1, wherein: the connecting plate (12) comprises a plurality of sections of supporting parts (121), and the plurality of sections of supporting parts (121) are sequentially and fixedly connected along the height direction of the foundation pit.