CN112627196A - Reinforced foundation pit supporting structure and construction method thereof - Google Patents
Reinforced foundation pit supporting structure and construction method thereof Download PDFInfo
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- CN112627196A CN112627196A CN202011639328.XA CN202011639328A CN112627196A CN 112627196 A CN112627196 A CN 112627196A CN 202011639328 A CN202011639328 A CN 202011639328A CN 112627196 A CN112627196 A CN 112627196A
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- foundation pit
- locking
- bracing
- lateral wall
- supporting structure
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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
- E02D5/80—Ground anchors
Abstract
The utility model relates to a strenghthened type foundation ditch supporting construction belongs to construction technical field, including the top supporting mechanism who is fixed in the foundation ditch lateral wall, top supporting mechanism is including the holding case that is fixed in the foundation ditch lateral wall, the holding incasement is provided with locking Assembly, still includes the upper end and locks in locking Assembly's bracing beam, the opening that supplies the bracing beam to pass is seted up to the holding case, bracing beam upper end stretches into holding case and joint in locking Assembly, bracing beam lower extreme joint in the foundation ditch bottom surface, the concrete has been pour to the holding incasement. This application has the effect that excavation supporting intensity is high, has improved supporting construction's stability.
Description
Technical Field
The application relates to the field of house building technology, in particular to a reinforced foundation pit supporting structure and a construction method thereof.
Background
The foundation pit refers to a space below the ground excavated for the construction of a building foundation and a basement. The foundation pit belongs to temporary engineering and has the function of providing a space so that the basic masonry operation can be carried out according to the position specified by design. The foundation pit easily causes the deformation of the surrounding soil body in the excavation process, and in the foundation pit construction process, if a supporting structure is not made, the problem of foundation pit collapse easily occurs, and the construction safety is influenced.
Chinese patent publication No. CN103485351A discloses a vertical anchor bolt supporting structure of batter pile for foundation pit support and a construction method thereof, the supporting structure includes a batter pile, a pile top crown beam and an anchor bolt, the batter pile is provided with one row at the edge of the foundation pit, and the bottom of the batter pile extends into the soil layer under the foundation, which is characterized in that: the anchor rod comprises a vertical prestressed anchor rod, the vertical prestressed anchor rod is arranged in a stable soil layer between two adjacent inclined slope protection piles, and the vertical prestressed anchor rod is inserted into the stable soil layer from the ground between the two adjacent inclined slope protection piles and is anchored in the stable soil layer; the pile top crown beam is rigidly connected with the top of the inclined slope protection pile, and the pile top crown beam is flexibly connected with the upper part of the vertical prestressed anchor rod.
In view of the above-mentioned related art, the inventors consider that the support is performed only by the inclined slope protection piles, and thus the support strength is low.
Disclosure of Invention
In order to improve foundation ditch support's intensity, this application provides a strenghthened type foundation ditch supporting construction.
First aspect, the application provides a strenghthened type underground structure, adopts following technical scheme:
the utility model provides a strenghthened type excavation supporting structure, is including the top supporting mechanism who is fixed in the excavation lateral wall, top supporting mechanism is including the holding case that is fixed in the excavation lateral wall, the holding incasement is provided with locking Assembly, still includes the upper end and locks in locking Assembly's bracing beam, the opening that supplies the bracing beam to pass is seted up to the holding case, bracing beam upper end stretches into holding case and joint in locking Assembly, bracing beam lower extreme joint in the excavation bottom surface, the concrete has been pour to the holding incasement.
Through adopting above-mentioned technical scheme, the bracing roof beam upper end locks in top supporting mechanism, the lower extreme joint is in the foundation ditch bottom surface, and the bracing roof beam is the slope setting, the bracing roof beam this moment, form the triangle-shaped structure between foundation ditch lateral wall and the foundation ditch bottom surface, thereby reach more stable effect, and make the bracing roof beam upper end connect more firmly through locking Assembly, through having pour the concrete in the holding incasement, treat that the concrete can further pour locking Assembly and the bracing roof beam upper end that is located the holding incasement after solidifying together, and then further strengthen the joint strength of bracing roof beam and top supporting mechanism, be favorable to improving whole support strength.
Optionally, the locking assembly comprises a U-shaped frame connected to the inner wall of the accommodating box, locking rings are connected to two sides of the U-shaped frame, a clamping frame is connected to the upper end of the diagonal bracing beam, the clamping frame comprises two locking rods capable of being inserted into the locking rings, an included angle formed by each locking rod and the diagonal bracing beam is an acute angle, and anti-falling assemblies used for preventing the locking rods from falling off the locking rings are arranged on the side walls of the locking rods.
Through adopting above-mentioned technical scheme, when the bracing beam stretched into the holding box, the bracing beam was worn to establish in the U-shaped frame, later penetrated the locking lever of bracing beam from top to bottom in the catch, because the gravity of bracing beam is downward to make the locking lever be difficult for breaking away from with the catch, and further reduced the possibility that locking lever and catch break away from through the anticreep subassembly.
Optionally, the anti-disengaging assembly includes the caulking groove of seting up in the locking lever lateral wall, the one end inner wall that the caulking groove leaned on down is connected with the kelly through the torsional spring rotation, the kelly has the trend of rotating outward towards the caulking groove all the time, when the kelly rotates to perpendicular with the locking lever, the tip inner wall butt of caulking groove is in the kelly and is used for preventing the excessive rotation of kelly.
Through adopting above-mentioned technical scheme, when the locking lever from top to bottom passed the catch, at first catch and catch bar lateral wall butt, and promote the catch bar and rotate towards the caulking groove direction, until the catch bar imbeds the catch completely, later the locking lever continues to stretch into the catch bar downwards, until the free end of catch bar separates with the catch bar lateral wall, at this moment with the catch bar roll-out under the reset action of torsional spring, until the inner wall butt of catch bar lateral wall and caulking groove tip, and catch bar and locking lever are perpendicular this moment, even when the locking lever takes place to upwards take out from the motion like this, can be with in locking lever joint and the catch through the catch bar, prevent that the locking lever from upwards deviating from.
Optionally, the lower surface of the locking ring is provided with a limiting groove for embedding the clamping rod.
Through adopting above-mentioned technical scheme, when the locking lever stretched into the catch, the kelly rotated out the caulking groove downwards to the kelly butt is at the lower surface of catch, through seting up the spacing groove, makes the kelly joint at the spacing inslot, makes the kelly joint more firm, has restricted the rotation of locking lever in the catch.
Optionally, the holding case has seted up floating cavity towards the lateral wall of foundation ditch, floating cavity is seted up along the direction of perpendicular to foundation ditch lateral wall, floating intracavity wall level is fixed with the pivot, the U-shaped frame rotates and connects in the pivot, the U-shaped frame is connected with the floating lever, the floating lever stretches into floating cavity, but floating lever end butt in floating cavity's top surface or bottom surface, leave the interval that supplies the bracing beam to float between the opening and the bracing beam of seting up on the holding case.
Through adopting the above-mentioned technical scheme, the chamber that floats is seted up at holding case lateral wall, the opening of U-shaped frame is towards the foundation ditch middle part, and the U-shaped frame revolute the rotation of axes, the floating bar is located the both sides of pivot with the U-shaped frame, thereby make when the U-shaped frame rotates downwards, the floating bar upwards rotates, when the U-shaped frame upwards rotates, the floating bar rotates downwards, and because the floating bar is located the floating cavity, through the butt of floating bar and floating cavity top surface and bottom surface, thereby make the U-shaped frame can have certain swing range, avoid the excessive rotation of U-shaped frame simultaneously, lead to the unstable structure.
Optionally, the side wall of the accommodating box is connected with a reinforcing component, the reinforcing component is inserted into soil of the side wall of the foundation pit, the reinforcing component comprises a reinforcing plate fixedly connected to the side wall of the accommodating box, the reinforcing plate is inserted into soil of the side wall of the foundation pit, a through hole is longitudinally formed in the reinforcing plate, and a reinforcing column longitudinally penetrates through the through hole.
Through adopting above-mentioned technical scheme, the gusset plate level sets up, and in the reinforcement post passed the gusset plate and worn to locate soil along vertically, when the holding case received ascending or decurrent thrust, can provide reverse moment of torsion through the reinforcement post, and then makes the holding case installation more firm.
Optionally, the bracing roof beam below is provided with the linkage subassembly, the linkage subassembly is including the support that is fixed in ground, rotate the dwang of connecting in the support, the upper end butt in the foundation ditch lateral wall of dwang, the lower extreme of dwang rotates and is connected with the gangbar, the upper end of gangbar rotates and connects in the position that the bracing roof beam lateral wall is close to the upper end.
Through adopting above-mentioned technical scheme, when foundation ditch lateral wall takes place the slope towards the foundation ditch middle part, at first promote the dwang upper end to rotate towards foundation ditch center direction, and then the dwang lower extreme rotates towards foundation ditch lateral wall direction, because gangbar one end is rotated and is connected in the dwang lower extreme, and the other end is connected in the bracing beam upper end to can pull bracing beam upper end through the gangbar and rotate towards foundation ditch lateral wall, and then promote the holding case and press to the foundation ditch lateral wall, prevent the further slope of foundation ditch.
Optionally, a butt joint plate is fixed on the side wall of the foundation pit, and the upper end of the rotating rod is abutted to the side wall of the butt joint plate.
Through adopting above-mentioned technical scheme, when the foundation ditch lateral wall takes place to incline, form the extrusion force between dwang and the butt board, the butt board can be followed to the upper end of dwang this moment and upwards slided, avoids the dwang upper end to penetrate in the soil of foundation ditch lateral wall.
In a second aspect, the application provides a construction method of a reinforced foundation pit supporting structure, which adopts the following technical scheme:
a construction method of a reinforced foundation pit supporting structure comprises the following steps,
step S1, excavating a foundation pit, namely excavating a square foundation pit according to the construction site selection;
step S2, installing an accommodating box, horizontally inserting a reinforcing plate into the side wall of the foundation pit, drilling a hole downwards from the ground through a drilling machine and penetrating the reinforcing plate, then inserting a reinforcement cage into the drilled cylindrical hole, and finally pouring concrete into the cylindrical hole;
step S3, inserting two locking rods at the upper end of the diagonal bracing beam into the locking ring, and after the locking rods are inserted into the locking ring, the clamping rods are ejected out under the action of the torsion spring and abut against the side wall of the locking rods;
step S4, inserting the bottom of the diagonal bracing beam on the bottom surface of the foundation pit;
and step S5, inserting a foam board into a gap between the opening of the accommodating box and the diagonal bracing beam, and then pouring concrete into the accommodating box.
Through adopting above-mentioned technical scheme, through following vertical drilling in the soil of foundation ditch one side, later through concreting, treat to form the reinforcement post after the concrete solidifies to improve the reinforcement intensity, with bracing beam and catch joint back, through concreting in the holding incasement, treat the concrete solidification back and consolidate the structure of holding incasement, thereby further promote joint strength.
Optionally, in step S4, a butting table is first fixed to the middle of the bottom surface of the foundation pit through a ground anchor, a mounting plate is fixed to the ground of the butting table facing the side wall of the foundation pit, an insertion hole is formed in the surface of the mounting plate, and a connector clip capable of being inserted into the insertion hole is connected to the lower end of the diagonal bracing beam.
By adopting the technical scheme, after the inclined supporting beams are installed, the inclined supporting beams apply component force towards the abutting table to the installation plate, and the foundation pit is square, so that the inclined supporting beams on each side wall of the foundation pit apply thrust towards the center to the abutting table, and the separation towards the abutting table generated by the inclined supporting beams on the two opposite side walls is mutually offset, so that the stress balance is achieved, and the stability of the structure is enhanced.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
FIG. 2 is a schematic structural diagram of a linkage assembly according to an embodiment of the present application.
Fig. 3 is a schematic structural view of a locking assembly according to an embodiment of the present application, in which a snap frame and a U-shaped frame are exploded.
Description of reference numerals: 1. a top support mechanism; 2. a reinforcement assembly; 3. an accommodating box; 4. a locking assembly; 5. a diagonal bracing beam; 6. a reinforcing plate; 7. a reinforcement cage; 8. reinforcing columns; 9. enclosing plates; 10. a floating cavity; 11. a U-shaped frame; 12. a connecting rod; 13. a swing frame; 14. a floating rod; 15. a clamping frame; 16. a cross bar; 17. a lock lever; 18. a locking ring; 19. caulking grooves; 20. a clamping rod; 21. a linkage assembly; 22. a support; 23. rotating the rod; 24. a linkage rod; 25. a butt joint plate; 26. a butting table; 27. mounting a plate; 28. inserting holes; 29. and (7) a plug connector.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses strenghthened type underground structure. Referring to fig. 1 and 2, the supporting structure comprises a top supporting mechanism 1 fixedly arranged at the upper position of the side wall of a foundation pit, the foundation pit is formed in a square shape, a reinforcing component 2 is connected to the side wall of the top supporting mechanism 1, and the reinforcing component 2 is arranged in soil on one side of the foundation pit in a penetrating mode, so that the top supporting mechanism 1 is more firmly fixed on the side wall of the foundation pit; top supporting mechanism 1 is including fixing the holding case 3 at the foundation ditch lateral wall, holding case 3 is upper surface open-ended hollow box, be provided with locking Assembly 4 in holding case 3, still including the bracing beam 5 that is the slope setting, holding case 3 sets up the opening that supplies bracing beam 5 to stretch into, the upper end of bracing beam 5 stretches into holding case 3 and joint in locking Assembly 4, the lower extreme of bracing beam 5 is pegged graft in the foundation ditch bottom surface, concrete has been pour in holding case 3, treat after the concrete sets, concreties the structure in holding case 3.
Referring to fig. 1 and 2, wherein consolidate subassembly 2 and include the gusset plate 6 of a body coupling in 3 lateral walls of holding box, gusset plate 6 is the level setting, and along vertical through-hole has been seted up on gusset plate 6, gusset plate 6 level is worn to establish in the soil of foundation ditch lateral wall, later on the earth's surface in foundation ditch one side and be located gusset plate 6 top, from top to bottom drill hole through the drilling machine, later in the downthehole cylindrical steel reinforcement cage 7 of interpolation dress that drills out, steel reinforcement cage 7 here is the cylinder that forms by a plurality of steel bar welds, and the inside space that is formed with of steel reinforcement cage 7, later concreting, treat that the concrete solidifies the back, form the reinforcement post 8, thereby play the reinforcing effect to the storage box, when the storage box receives upwards or downward power, can provide reverse moment through reinforcement post 8, and then improve the stability of storage box. At foundation ditch lateral wall fixedly connected with bounding wall 9, bounding wall 9 is located between holding case 3 and the foundation ditch lateral wall, and sets up the through-hole that supplies gusset plate 6 to pass on bounding wall 9, therefore holding case 3 is at first through the application of force to bounding wall 9, and the back transmits power to the foundation ditch inner wall through bounding wall 9, and bounding wall 9 length is the same with foundation ditch lateral wall width to increased application of force area, improved the stability of foundation ditch structure.
Referring to fig. 2 and 3, in order to lock the upper end of the diagonal brace 5, a floating cavity 10 is formed in the inner wall of the accommodating box 3 close to the side wall of the foundation pit, the floating cavity 10 is formed in a square shape, a locking component 4 is rotatably connected in the floating cavity 10, a rotating shaft is fixed on the inner wall of the floating cavity 10 along the horizontal direction, a U-shaped frame 11 is rotatably connected on the rotating shaft, the U-shaped frame 11 comprises a connecting rod 12 rotatably penetrating the rotating shaft, a U-shaped swing frame 13 integrally connected to one end of the connecting rod 12 facing the inner cavity of the accommodating box 3, the swing frame 13 is provided with an opening for the diagonal brace 5 to pass through, a floating rod 14 is further integrally connected to one end of the connecting rod 12 facing the floating cavity 10, the floating rod 14 rotates along with the U-shaped frame 11, and the free end of the floating rod 14 can abut against the top surface or the bottom surface of the floating cavity 10, so that when the U-shaped frame 11 rotates, the floating rod, the rotation amplitude of the U-shaped frame 11 is limited.
As shown in fig. 2 and 3, the upper end of the diagonal bracing beam 5 extends into the accommodating box 3 and penetrates into the opening of the swing frame 13, the upper end of the diagonal bracing beam 5 is welded with a clamping frame 15, the clamping frame 15 comprises a cross rod 16 welded to the upper end of the diagonal bracing beam 5 and perpendicular to the diagonal bracing beam 5, two ends of the cross rod 16 are welded with lock levers 17, and the lock levers 17 are perpendicular to the cross rod 16 and form an acute angle with the diagonal bracing beam 5; the two sides of the swing frame 13 are integrally connected with locking rings 18, the middle parts of the locking rings 18 penetrate through the locking rings 18 from top to bottom, and the locking rods 17 penetrate through the locking rings 18 from top to bottom during connection, so that the locking rods 17 are hung in the locking rings 18 under the action of the self gravity of the inclined supporting beam 5.
As shown in fig. 3, in order to further prevent the locking rod 17 from being disengaged from the locking ring 18, an insertion groove 19 is formed in the side wall of the locking rod 17 along the length direction of the side wall, a rotating shaft is fixed at one end of the insertion groove 19 away from the cross rod 16, a clamping rod 20 penetrates through the rotating shaft through the rotation of a torsion spring, the length of the clamping rod 20 is smaller than that of the insertion groove 19, the clamping rod 20 can rotate into the insertion groove 19, the torsion spring applies a torsion force to the clamping rod 20 which always rotates towards the outside of the insertion groove 19, the maximum rotation angle of the clamping rod 20 is 90 °, when the clamping rod 20 rotates to be perpendicular to the locking rod 17, the side wall of the clamping rod 20 abuts against the inner wall of the end portion of the insertion groove 19, and the movement interference in the rotation process of the clamping rod 20 can be avoided by setting the hinged end of. When the lock rod 17 is inserted into the lock ring 18, the clamping rod 20 is firstly abutted by the lock ring 18 and rotates towards the embedded groove 19, and when the clamping rod 20 continues to extend into the lock ring 18 until the free end of the clamping rod 20 is exposed out of the lock ring 18, the clamping rod 20 is ejected under the action of the torsion spring, so that the lock rod 17 is further limited. The lower surface of the locking ring 18 is also provided with a limiting groove for the clamping rod 20 to be clamped in, when the clamping rod 20 is clamped in the limiting groove, the possibility that the locking rod 17 rotates in the locking ring 18 can be reduced, and the structural stability is further improved.
As shown in fig. 2, a linkage assembly 21 is further arranged on the bottom surface of the foundation pit, the linkage assembly 21 is located below the raking beam 5, the linkage assembly 21 comprises a support 22 fixed on the bottom surface of the foundation pit through an earth anchor, a rotating rod 23 is rotatably connected to the support 22 through a rotating shaft, the upper end of the rotating rod 23 inclines towards the inner wall of the foundation pit and abuts against the inner wall of the foundation pit, a linkage rod 24 is rotatably connected to the lower end of the rotating rod 23, the upper end of the linkage rod 24 inclines towards the raking beam 5 and the upper end of the linkage rod 24 is rotatably connected to the raking beam 5, and the linkage rod 24 is rotatably connected to the position. Therefore, when the side wall of the foundation pit inclines, the rotating rod 23 can be driven to rotate, and then the linkage rod 24 is driven to pull the upper end of the diagonal bracing beam 5 towards the side wall of the foundation pit, so that reverse thrust is applied to the side wall of the foundation pit by the upper end of the diagonal bracing beam 5, and the self-locking effect is achieved. Referring to fig. 1, pass through stock fixedly connected with butt plate 25 at the foundation ditch lateral wall, the upper end butt of dwang 23 in butt plate 25 to when the foundation ditch lateral wall takes place the slope, dwang 23 upper end slides along butt plate 25, prevents that dwang 23 upper end from penetrating in the soil of foundation ditch lateral wall.
As shown in fig. 1, in order to improve the butt stability of the lower end of the diagonal bracing beam 5 and the bottom surface of the foundation pit, the center of the bottom surface of the foundation pit is provided with a butt table 26 through an earth anchor fixedly connected with, the butt table 26 is square and is buried underground, the butt table 26 is provided with a mounting plate 27 towards the side wall fixedly connected with of the diagonal bracing beam 5, the upper surface of the mounting plate 27 is provided with two insertion holes 28, the lower end of the diagonal bracing beam 5 is integrally connected with a plug connector 29, the plug connector 29 is in a U shape and comprises two insertion rods, and the two insertion rods are correspondingly inserted into the two insertion holes 28.
The embodiment also provides a construction method of the reinforced foundation pit supporting structure, which comprises the following steps,
step S1, excavating a foundation pit, wherein the foundation pit with a square cross section is excavated according to the construction site selection, and the side wall of the foundation pit is vertical to the ground;
step S2, installing the accommodating box 3, horizontally inserting the reinforcing plate 6 into the side wall of the foundation pit, drilling a hole downwards from the ground on one side of the foundation pit through a drilling machine and penetrating the reinforcing plate 6, then inserting the reinforcement cage 7 into the drilled cylindrical hole, finally pouring concrete into the cylindrical hole, and solidifying the concrete and the reinforcement cage 7 into a whole after the concrete is solidified, thereby forming a reinforcing column 8;
step S3, inserting the two locking rods 17 at the upper end of the inclined supporting beam 5 into the locking ring 18, and after the locking rods 17 are inserted into the locking ring 18, the clamping rods 20 are ejected out under the action of the torsion spring and abut against the side wall of the locking rod 17;
step S4, firstly, fixing the abutting table 26 and the abutting plate 25 at the middle part of the bottom surface of the foundation pit through a ground anchor, inserting the bottom of the inclined supporting beam 5 into the inserting hole 28 on the abutting plate 25, and then laying a foundation soil layer above the abutting table 26 and the abutting plate 25 and rolling and flattening the foundation soil layer so as to facilitate construction at the bottom of the foundation pit;
step S5, filling a foam board into a gap between the opening of the accommodating box 3 and the diagonal bracing beam 5, then pouring concrete into the accommodating box 3, and after the concrete is solidified, fixedly connecting the parts in the accommodating box 3 together, so that the firmness of the whole structure is improved; and finally, installing the linkage assembly 21 additionally, namely fixing the support 22 on the bottom surface of the foundation pit through an earth anchor, then rotatably connecting the rotating rod 23 to the support 22, abutting the upper end of the rotating rod 23 against the inner wall of the foundation pit, rotatably connecting the lower end of the rotating rod 23 to the linkage rod 24, and rotatably connecting the upper end of the linkage rod 24 to the position, close to the upper part, of the inclined supporting beam 5.
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 (10)
1. The utility model provides a strenghthened type excavation supporting construction which characterized in that: including top supporting mechanism (1) that is fixed in the foundation ditch lateral wall, top supporting mechanism (1) is including holding case (3) that are fixed in the foundation ditch lateral wall, be provided with locking Assembly (4) in holding case (3), still include upper end locking in bracing roof beam (5) of locking Assembly (4), the opening that supplies bracing roof beam (5) to pass is seted up in holding case (3), bracing roof beam (5) upper end stretches into holding case (3) and joint in locking Assembly (4), bracing roof beam (5) lower extreme joint in foundation ditch bottom surface, the concrete has been pour in holding case (3).
2. The reinforced foundation pit supporting structure of claim 1, wherein: locking Assembly (4) are including connecting in U-shaped frame (11) of holding case (3) inner wall, U-shaped frame (11) both sides are connected with catch (18), bracing beam (5) upper end is connected with joint frame (15), joint frame (15) include two locking levers (17) that can insert catch (18), locking lever (17) are the acute angle with the contained angle that bracing beam (5) formed, locking lever (17) lateral wall is provided with the anticreep subassembly that is used for preventing locking lever (17) to deviate from catch (18).
3. The reinforced foundation pit supporting structure of claim 2, wherein: the anticreep subassembly is including offering caulking groove (19) in locking lever (17) lateral wall, caulking groove (19) one end inner wall that leans on down is connected with kelly (20) through the torsional spring rotation, kelly (20) have the trend of rotating outward towards caulking groove (19) all the time, when kelly (20) rotate to perpendicular with locking lever (17), the tip inner wall butt of caulking groove (19) is in kelly (20) and is used for preventing the excessive rotation of kelly (20).
4. The reinforced foundation pit supporting structure of claim 3, wherein: the lower surface of the locking ring (18) is provided with a limit groove for the clamping rod (20) to be embedded in.
5. The reinforced foundation pit supporting structure of claim 2, wherein: holding case (3) have seted up unsteady chamber (10) towards the lateral wall of foundation ditch, unsteady chamber (10) are seted up along the direction of perpendicular to foundation ditch lateral wall, unsteady chamber (10) inner wall level is fixed with the pivot, U-shaped frame (11) rotate to be connected in the pivot, U-shaped frame (11) are connected with floating lever (14), floating lever (14) stretch into in unsteady chamber (10), but floating lever (14) tip butt in the top surface or the bottom surface of unsteady chamber (10), leave the interval that supplies bracing beam (5) to float between opening and bracing beam (5) of seting up on holding case (3).
6. The reinforced foundation pit supporting structure of claim 1, wherein: the side wall of the accommodating box (3) is connected with a reinforcing component (2), the reinforcing component (2) is inserted into soil of the side wall of the foundation pit, the reinforcing component (2) comprises a reinforcing plate (6) fixedly connected to the side wall of the accommodating box (3), the reinforcing plate (6) is inserted into the soil of the side wall of the foundation pit, a through hole is longitudinally formed in the reinforcing plate (6), and a reinforcing column (8) longitudinally penetrates through the through hole.
7. The reinforced foundation pit supporting structure of claim 1, wherein: bracing roof beam (5) below is provided with linkage subassembly (21), linkage subassembly (21) is including support (22), the rotation that is fixed in ground and connect in dwang (23) of support (22), the upper end butt in the foundation ditch lateral wall of dwang (23), the lower extreme of dwang (23) is rotated and is connected with gangbar (24), the upper end of gangbar (24) is rotated and is connected in bracing roof beam (5) lateral wall and be close to the position of upper end.
8. The reinforced foundation pit supporting structure of claim 7, wherein: an abutting plate (25) is fixed on the side wall of the foundation pit, and the upper end of the rotating rod (23) abuts against the side wall of the abutting plate (25).
9. A construction method for a reinforced foundation pit supporting structure according to any one of claims 1 to 8, wherein: comprises the following steps of (a) carrying out,
step S1, excavating a foundation pit, namely excavating a square foundation pit according to the construction site selection;
step S2, installing the accommodating box (3), horizontally inserting the reinforcing plate (6) into the side wall of the foundation pit, drilling a hole downwards from the ground through a drilling machine and penetrating the reinforcing plate (6), then inserting a reinforcement cage (7) into the drilled cylindrical hole, and finally pouring concrete into the cylindrical hole;
step S3, inserting two lock rods (17) at the upper end of the diagonal bracing beam (5) into the lock ring (18), and after the lock rods (17) are inserted into the lock ring (18), the clamping rods (20) are ejected out under the action of the torsion springs and abut against the side walls of the lock rods (17);
step S4, inserting the bottom of the diagonal bracing beam (5) on the bottom surface of the foundation pit;
and step S5, filling a foam board into a gap between the opening of the accommodating box (3) and the diagonal bracing beam (5), and then pouring concrete into the accommodating box (3).
10. The construction method of the reinforced foundation pit supporting structure according to claim 9, wherein: in the step S4, a butting table (26) is fixed in the middle of the bottom surface of the foundation pit through a ground anchor, a mounting plate (27) is fixed on the ground of the butting table (26) facing the side wall of the foundation pit, a splicing hole (28) is formed in the surface of the mounting plate (27), and a plug connector (29) capable of being inserted into the splicing hole (28) is connected to the lower end of the diagonal bracing beam (5).
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| CN202011639328.XA CN112627196B (en) | 2020-12-31 | 2020-12-31 | Reinforced foundation pit supporting structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718799A (en) * | 2021-10-13 | 2021-11-30 | 厦门雅众建设集团有限公司 | Rapid emergency diagonal bracing for foundation pit emergency and construction method thereof |
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| CN110761297A (en) * | 2019-11-04 | 2020-02-07 | 石家庄铁道大学 | Supporting device for construction of civil bridge |
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| JPH07252835A (en) * | 1994-03-15 | 1995-10-03 | Toda Constr Co Ltd | Construction method for diagonal shore strut |
| US20060070803A1 (en) * | 2003-02-14 | 2006-04-06 | Han Man-Yop | Prestressed scaffolding system |
| CN208777720U (en) * | 2018-08-23 | 2019-04-23 | 中建二局第三建筑工程有限公司 | Wall hangs the detachable straight thread reinforced bar pedestal of mould diagonal brace |
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| CN110761297A (en) * | 2019-11-04 | 2020-02-07 | 石家庄铁道大学 | Supporting device for construction of civil bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113718799A (en) * | 2021-10-13 | 2021-11-30 | 厦门雅众建设集团有限公司 | Rapid emergency diagonal bracing for foundation pit emergency and construction method thereof |
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| CN112627196B (en) | 2021-10-08 |
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