CN217896524U

CN217896524U - Deep basal pit collapse prevention supporting structure

Info

Publication number: CN217896524U
Application number: CN202222115512.5U
Authority: CN
Inventors: 游中炳; 刘莉; 周泽坤; 龚琴; 赵兵; 黄凯
Original assignee: Sichuan Yushuo Construction Engineering Group Co ltd
Current assignee: Sichuan Yushuo Construction Engineering Group Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-11-25
Anticipated expiration: 2032-08-10

Abstract

The application relates to a deep basal pit supporting construction that collapses belongs to excavation supporting's technical field, and it includes: the supporting and protecting plates are fixed on the side wall of the foundation pit through the anchor rods; the supporting structure further comprises an upright post, a first fixing rod and a second fixing rod; the upright post is arranged on one surface of the supporting and protecting plate close to the center of the foundation pit; the upright column comprises a plurality of upright column assemblies, and the upright column assemblies adjacent to each other in the vertical direction are detachably connected; the first fixing rods are arranged in rock soil around the foundation pit at intervals and used for tensioning one end of the upright post; the second fixed rod is positioned in the foundation pit and spaced in rock soil on the bottom wall of the foundation pit and used for abutting against the other end of the upright post. This application has the beneficial effect who improves supporting construction suitability.

Description

Deep basal pit collapse prevention supporting structure

Technical Field

The application relates to the technical field of foundation pit support, in particular to deep foundation pit collapse prevention supporting structure.

Background

The deep foundation pit is a project with the excavation depth exceeding 5 meters or the excavation depth not exceeding 5 meters, but with particularly complex geological conditions, surrounding environment and underground pipelines, and mainly avoids the safety threat of personnel and the construction site damage caused by the collapse of foundation pit earthwork through foundation pit supporting.

At present, chinese patent with publication number CN215977297U discloses a deep basal pit collapse prevention supporting structure, it includes the stock, fix the backplate on the foundation ditch lateral wall through the stock, the backplate is including the last backplate and the lower backplate that are concatenation from top to bottom, still include the vertical first spud pile that sets up in foundation ditch side earthwork, connect the straining device between first spud pile and last backplate, the crossbeam of setting between last backplate and lower backplate, vertical setting is at the second spud pile of foundation ditch bottom and connect the bracing piece between crossbeam and second spud pile. During supporting, at first, punch in foundation ditch bottom and the earthwork of foundation ditch side to pour first spud pile and second spud pile, will go up backplate and bottom suspension backplate concatenation back, adopt straining device and bracing piece to support.

For the related technologies, the inventor finds that when the foundation pit is deep, a plurality of supporting and protecting plates need to be arranged in the vertical direction or supporting and protecting plates with larger sizes need to be adopted, and if the plurality of supporting and protecting plates are adopted, the supporting and protecting plates at different heights need supporting rods with different lengths to support, so that the supporting rods cannot support the supporting and protecting plates well; if the supporting plate with larger size is adopted, the supporting plate is inconvenient to install and transport, so the defect of lower applicability exists.

SUMMERY OF THE UTILITY MODEL

In order to improve supporting construction's suitability, this application provides a deep basal pit collapse prevention supporting construction.

An anti-collapse supporting structure of a deep foundation pit comprises a plurality of supporting and protecting plates and anchor rods, wherein the supporting and protecting plates are fixed on the side wall of the foundation pit through the anchor rods;

the supporting structure further comprises an upright post, a first fixing rod and a second fixing rod; wherein the content of the first and second substances,

the upright post is arranged on one surface of the support guard plate close to the center of the foundation pit; the upright column comprises a plurality of upright column assemblies, and the upright column assemblies adjacent to each other in the vertical direction are detachably connected;

the first fixing rods are arranged in rock soil around the foundation pit at intervals and used for tensioning one end of the upright post;

the second fixed rod is positioned in the foundation pit and spaced in rock soil of the bottom wall of the foundation pit and used for abutting against the other end of the upright post.

Through adopting above-mentioned technical scheme, the one end of the taut stand of first dead lever, the other end of tight stand is supported to the second dead lever, makes the stand support a plurality of backplate of tight vertical direction, because the stand is assembled by a plurality of stand subassemblies, when the excavation different degree of depth's foundation ditch, can select the stand subassembly of different quantity, and the stand subassembly transportation is convenient, receives construction environment influence less, therefore the supporting construction that this application provided has higher suitability.

Optionally, the column assembly includes a reinforcing rod, a connecting bolt and a connecting nut, one end of the reinforcing rod is fixedly connected with a connecting block, the other end of the reinforcing rod is provided with a connecting groove, the connecting block is adapted to the connecting groove, and the connecting block at one end of one reinforcing rod is inserted into the connecting groove at one end of another adjacent reinforcing rod; the connecting bolt sequentially penetrates through one side wall of the connecting groove, the connecting block and the other side wall of the connecting groove, and is in threaded connection with the connecting nut.

Through adopting above-mentioned technical scheme, the connecting block of stiffener one end inserts in the spread groove of another adjacent stiffener one end, then uses connecting bolt to pass a lateral wall, the connecting block of spread groove and another lateral wall of spread groove in proper order, with coupling nut threaded connection, the mounting means is simple, the installation is quick.

Optionally, the deep foundation pit collapse prevention supporting structure further comprises a first connecting piece and a second connecting piece, the first connecting piece is used for connecting two adjacent first fixing rods, and the second connecting piece is used for connecting two adjacent second fixing rods.

Through adopting above-mentioned technical scheme, first connecting piece links into whole with first dead lever, and the second connecting piece links into whole with the second dead lever to promote the whole steadiness of first dead lever and second dead lever.

Optionally, the first connecting piece and the second connecting piece have the same structure, the first connecting piece includes a connecting rod and a locking bolt, both ends of the connecting rod are provided with notches, and are hinged to each other with a locking block, one side of the locking block close to the connecting rod is also provided with a notch, the notch on the connecting rod and the notch on the locking block form a locking groove, and the locking groove is matched with the first fixing rod;

the locking bolt is used for penetrating the first fixing rod into the locking groove and then penetrating the locking block along the length direction of the connecting rod to be in threaded connection with the connecting rod.

Through adopting above-mentioned technical scheme, with breach and first dead lever butt on the connecting rod, then rotate the latch segment, make breach and first dead lever butt on the latch segment, pass latch segment and connecting rod threaded connection with the locking bolt along connecting rod length direction again.

Optionally, the deep foundation pit collapse prevention supporting structure further comprises a third connecting piece, and the third connecting piece is used for connecting two anchor rods which are adjacent in the horizontal direction.

Through adopting above-mentioned technical scheme, the third connecting piece is connected the adjacent stock of level as whole to promote supporting construction's whole steadiness.

Optionally, the third connecting piece includes the rope body, the one end of the rope body with the stock exposes the one end fixed connection of foundation ditch lateral wall, one correspond on the stock and be provided with two the rope body, one of them the rope body and adjacent one side the rope body passes through anchor clamps fixed connection, and wherein another the rope body and adjacent opposite side the rope body passes through anchor clamps fixed connection.

Optionally, the clamp includes two clamping plates, two fastening bolts and two fastening nuts, two arc-shaped clamping grooves are formed in the clamping plates, the rope body is arranged between the two clamping plates, and one rope body is located in one corresponding clamping groove; the other rope body is positioned in the corresponding other clamping groove; the fastening bolt is used for penetrating through the two clamping plates and is in threaded connection with the fastening nut.

Through adopting above-mentioned technical scheme, the connected mode is simple, can realize the high-speed joint of the rope body.

Optionally, the supporting and protecting plate is rectangular, and the four side walls of the supporting and protecting plate are fixedly connected with expansion water stop strips.

Through adopting above-mentioned technical scheme, reduce the washing away of rainwater to the foundation ditch lateral wall to can reduce the foundation ditch lateral wall and take place to collapse under the erosion of rainwater.

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

1. this application is through setting up the one end of the taut stand of first dead lever, and the second dead lever supports the other end of tight stand, makes the stand support a plurality of backplate of tight vertical direction, because the stand is by a plurality of stand subassemblies equipment, when the foundation ditch of the different degree of depth of excavation, can select the stand subassembly of different quantity, and the stand subassembly transportation is convenient, and it is less to receive the construction environment influence, therefore the supporting construction that this application provided has higher suitability.

2. The purpose of setting up first connecting piece, second connecting piece and third connecting piece is, is connected supporting construction as a whole to improve supporting construction's whole steadiness.

3. The purpose of setting up the inflation sealing rod on the wall of support plate side is, reduces the rainwater and to the erodeing of foundation ditch lateral wall to can reduce the foundation ditch lateral wall and take place to collapse under the erosion of rainwater.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the deep foundation pit collapse prevention supporting structure of the present application;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

FIG. 4 is a schematic structural view of an embodiment of the support shield of the present application.

Description of reference numerals: 100. supporting the guard plate; 110. an expansion water stop bar; 200. an anchor rod; 300. a column; 310. a column assembly; 311. a reinforcing bar; 312. connecting blocks; 313. a connecting bolt; 400. a first fixing lever; 500. a second fixing bar; 510. a butting block; 600. a first connecting member; 610. a connecting rod; 620. locking the bolt; 630. a locking block; 700. a second connecting member; 800. a third connecting member; 810. a rope body; 900. a clamp; 910. a splint; 920. fastening a bolt; 930. and (5) tightening the nut.

Detailed Description

The present application will be described in further detail with reference to fig. 1-4.

The application discloses an anti-collapse supporting structure of a deep foundation pit, which is an embodiment of the anti-collapse supporting structure of the deep foundation pit and comprises a plurality of supporting plates 100 and anchor rods 200, wherein the supporting plates 100 are fixed on the side wall of the foundation pit through the anchor rods 200 as shown in figure 1; the supporting structure further includes a pillar 300, a first fixing rod 400 and a second fixing rod 500; wherein, the upright post 300 is arranged on one surface of the support and protection plate 100 close to the center of the foundation pit; mast 300 includes a plurality of mast assemblies 310, with vertically adjacent mast assemblies 310 being removably connected; the first fixing rods 400 are arranged in rock soil around the foundation pit at intervals, the first fixing rods 400 are connected with the upright post 300 through steel cables, and the steel cables are in a tensioning state, so that the first fixing rods 400 tension one end of the upright post 300; second dead lever 500 is arranged in the foundation ditch, in the ground of interval foundation ditch diapire, and the one end welding of the ground of second dead lever 500 exposure foundation ditch diapire has butt piece 510, has seted up the butt groove on the butt piece 510, butt groove and stand 300 adaptation, butt piece 510 and supporting plate 100 butt, stand 300 set up in the butt inslot and with the diapire butt in butt groove. In the present embodiment, the number of the columns 300 is equal to the number of the first fixing bars 400 and the number of the second fixing bars 500, and they are disposed in one-to-one correspondence.

In one embodiment of the column assembly 310, the column assembly 310 includes a reinforcing rod 311, a connecting bolt 313 and a connecting nut (not shown in the figure), one end of the reinforcing rod 311 is welded with a connecting block 312, the other end of the reinforcing rod 311 is provided with a connecting groove, the connecting block 312 is adapted to the connecting groove, the connecting block 312 at one end of one reinforcing rod 311 is inserted into the connecting groove at one end of another adjacent reinforcing rod 311; the connection bolt 313 sequentially passes through one side wall of the connection groove, the connection block 312 and the other side wall of the connection groove, and is in threaded connection with the connection nut.

In order to improve the overall stability of the first fixing rod 400 and the second fixing rod 500, the deep foundation pit collapse prevention supporting structure further comprises a first connecting member 600 and a second connecting member 700, wherein the first connecting member 600 is used for connecting two adjacent first fixing rods 400, and the second connecting member 700 is used for connecting two adjacent second fixing rods 500.

As shown in fig. 2, as an embodiment of the first connecting piece 600 and the second connecting piece 700, the first connecting piece 600 and the second connecting piece 700 have the same structure, the first connecting piece 600 includes a connecting rod 610 and a locking bolt 620, both ends of the connecting rod 610 are provided with notches, and are hinged to each other by a locking block 630, one side of the locking block 630 near the connecting rod 610 is also provided with a notch, the notch on the connecting rod 610 and the notch on the locking block 630 form a locking groove, and the locking groove is adapted to the first fixing rod 400; the locking bolt 620 is used for penetrating the first fixing rod 400 into the locking groove and then vertically penetrating one side of the locking block 630 away from the hinge shaft along the length direction of the connecting rod 610 to be in threaded connection with the connecting rod 610.

In order to improve the overall stability of the supporting structure, the deep foundation pit collapse prevention supporting structure further includes a third connecting member 800, the third connecting member 800 is used for connecting two anchor rods 200 adjacent to each other in the horizontal direction, in this embodiment, the third connecting member 800 is located at one end of the reinforcing rod 311 far away from the side wall of the foundation pit, is perpendicular to the reinforcing rod 311, and is abutted against the reinforcing rod.

As shown in fig. 1 and fig. 3, as an embodiment of the third connecting member 800, the third connecting member 800 includes two rope bodies 810, one end of each rope body 810 is fixedly connected to one end of the anchor rod 200 exposed out of the sidewall of the foundation pit, two rope bodies 810 are correspondingly disposed on one anchor rod 200, one rope body 810 is fixedly connected to the rope body 810 on one adjacent side through a clamp 900, the other rope body 810 is fixedly connected to the rope body 810 on the other adjacent side through the clamp 900, and the rope bodies 810 are all in a tensioned state. In this embodiment, the rope 810 is a steel rope.

As shown in fig. 3, as an embodiment of the clamp 900, the clamp 900 includes a clamping plate 910, two fastening bolts 920 and two fastening nuts 930, two arc-shaped clamping grooves are formed on the clamping plate 910, the two clamping plates 910 are provided, the rope 810 is disposed between the two clamping plates 910, and one rope 810 is located in a corresponding clamping groove; the other rope body 810 is positioned in the corresponding other clamping groove; the fastening bolt 920 is used to pass through the two clamping plates 910 and be screwed with the fastening nut 930. In this embodiment, the number of the clamps 900 for connecting the string 810 is two, but in other embodiments, the number may be 3, 4, 5, or the like.

In addition, the steel cable for connecting the first fixing rod 400 and the upright 300 is also connected with the first fixing rod 400 and the upright 300 by using the clamp 900, one end of the steel cable is sleeved around and fixed with the first fixing rod 400 to form a ring by the clamp 900, and the other end of the steel cable penetrates through the upright 300 to form a ring by the clamp 900.

As shown in fig. 4, in order to reduce erosion and corrosion of rainwater to the side walls of the foundation pit, the supporting plate 100 is rectangular, and expansion water stop bars 110 are bonded to four side walls of the supporting plate 100 through structural adhesive.

The implementation principle of the embodiment is as follows:

before the foundation pit is excavated, the first fixing rod 400 is firstly driven into rock soil around the foundation pit to be excavated, the anchor rod 200 is driven into the side wall of the foundation pit along with the excavation of the foundation pit, and the supporting and protecting plate 100 is installed on the side wall of the foundation pit, and the side wall of the supporting and protecting plate 100 is provided with the expansion water stop strip 110, so that the erosion of rainwater on the side wall of the foundation pit can be reduced;

the upright post 300 is installed on the side wall of the foundation pit through a plurality of upright post assemblies 310, then a second fixing rod 500 is driven into the bottom wall of the foundation pit, one end of the upright post 300 is tensioned through a steel cable by a first fixing rod 400, and the other end of the upright post 300 is abutted through an abutting block 510 by the second fixing rod 500, so that the upright post 300 is abutted against the supporting plate 100;

moreover, the notch on the connecting rod 610 is abutted to the first fixing rod 400, then the locking block 630 is rotated to enable the notch on the locking block 630 to be abutted to the first fixing rod 400, and then the locking bolt 620 penetrates through the locking block 630 along the length direction of the connecting rod 610 to be in threaded connection with the connecting rod 610, so that a plurality of first fixing rods 400 are connected together, and a plurality of second fixing rods 500 are connected together by adopting the same structure; then, the horizontally adjacent anchor rods 200 are connected using the clamps 900 and the rope bodies 810, thereby enhancing the overall stability of the supporting structure.

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

Claims

1. An anti-collapse supporting structure of a deep foundation pit comprises a plurality of supporting and protecting plates (100) and anchor rods (200), wherein the supporting and protecting plates (100) are fixed on the side wall of the foundation pit through the anchor rods (200); the method is characterized in that:

the supporting structure further comprises a column (300), a first fixing rod (400) and a second fixing rod (500); the upright post (300) is arranged on one surface, close to the center of the foundation pit, of the support guard plate (100); the upright post (300) comprises a plurality of upright post assemblies (310), and the upright post assemblies (310) adjacent in the vertical direction are detachably connected;

the first fixing rods (400) are arranged in rock soil around the foundation pit at intervals and used for tensioning one end of the upright post (300);

the second fixing rod (500) is positioned in the foundation pit, is spaced in rock soil of the bottom wall of the foundation pit and is used for abutting against the other end of the upright post (300).

2. The deep foundation pit collapse prevention supporting structure according to claim 1, wherein: the upright post component (310) comprises reinforcing rods (311), connecting bolts (313) and connecting nuts, one end of each reinforcing rod (311) is fixedly connected with a connecting block (312), the other end of each reinforcing rod (311) is provided with a connecting groove, the connecting blocks (312) are matched with the connecting grooves, and the connecting block (312) at one end of one reinforcing rod (311) is inserted into the connecting groove at one end of the other adjacent reinforcing rod (311); the connecting bolt (313) penetrates through one side wall of the connecting groove, the connecting block (312) and the other side wall of the connecting groove in sequence and is in threaded connection with the connecting nut.

3. The deep foundation pit collapse-preventing supporting structure of claim 2, wherein: the deep foundation pit collapse prevention supporting structure further comprises a first connecting piece (600) and a second connecting piece (700), wherein the first connecting piece (600) is used for connecting two adjacent first fixing rods (400), and the second connecting piece (700) is used for connecting two adjacent second fixing rods (500).

4. The deep foundation pit collapse prevention supporting structure according to claim 3, wherein: the structure of the first connecting piece (600) is the same as that of the second connecting piece (700), the first connecting piece (600) comprises a connecting rod (610) and a locking bolt (620), both ends of the connecting rod (610) are provided with notches, locking blocks (630) are hinged to each other, one side, close to the connecting rod (610), of each locking block (630) is also provided with a notch, the notches in the connecting rod (610) and the locking blocks (630) form a locking groove, and the locking groove is matched with the first fixing rod (400);

the locking bolt (620) is used for penetrating the first fixing rod (400) into the locking groove and then penetrating the locking block (630) along the length direction of the connecting rod (610) to be in threaded connection with the connecting rod (610).

5. The deep foundation pit collapse-preventing supporting structure of claim 1, wherein: the deep foundation pit collapse prevention supporting structure further comprises a third connecting piece (800), and the third connecting piece (800) is used for connecting two anchor rods (200) adjacent in the horizontal direction.

6. The deep foundation pit collapse prevention supporting structure according to claim 5, wherein: the third connecting piece (800) comprises a rope body (810), one end of the rope body (810) is exposed out of the anchor rod (200) and is fixedly connected with one end of the side wall of the foundation pit, one end of the anchor rod (200) is correspondingly provided with two rope bodies (810), one rope body (810) is fixedly connected with the rope body (810) on one adjacent side through a clamp (900), and the other rope body (810) is fixedly connected with the rope body (810) on the other adjacent side through the clamp (900).

7. The deep foundation pit collapse-preventing supporting structure of claim 6, wherein: the clamp (900) comprises two clamping plates (910), two fastening bolts (920) and two fastening nuts (930), two arc-shaped clamping grooves are formed in the clamping plates (910), the rope bodies (810) are arranged between the two clamping plates (910), and one rope body (810) is located in one corresponding clamping groove; the other rope body (810) is positioned in the corresponding other clamping groove; the fastening bolt (920) is used for penetrating through the two clamping plates (910) and being in threaded connection with the fastening nut (930).

8. The deep foundation pit collapse prevention supporting structure according to any one of claims 1 to 7, wherein: the supporting and protecting plate (100) is rectangular, and the four side walls of the supporting and protecting plate (100) are fixedly connected with expansion water stop strips (110).