CN113931195A - Foundation pit supporting structure and construction method thereof - Google Patents
Foundation pit supporting structure and construction method thereof Download PDFInfo
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- CN113931195A CN113931195A CN202111228998.7A CN202111228998A CN113931195A CN 113931195 A CN113931195 A CN 113931195A CN 202111228998 A CN202111228998 A CN 202111228998A CN 113931195 A CN113931195 A CN 113931195A
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 239000003351 stiffener Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 12
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 12
- 239000002689 soil Substances 0.000 description 10
- 210000001503 joint Anatomy 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
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- 239000000843 powder Substances 0.000 description 1
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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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Abstract
The application discloses a foundation pit supporting structure and a construction method thereof; a foundation pit supporting structure comprises a plurality of baffles arranged on the inner side wall of a foundation pit, wherein all the baffles are sequentially arranged along the circumferential direction of the foundation pit, and a plurality of connecting rods are connected between each baffle and the inner side wall of the foundation pit; a connecting hole penetrates through the position, located on each connecting rod, of each baffle plate along the thickness direction of the baffle plate, a mounting hole is formed in the position, located on each connecting hole, of the foundation pit, and one end of each connecting rod is inserted into the corresponding mounting hole through the connecting hole; one end of the connecting rod, which is positioned in the mounting hole, is rotatably provided with a butting rod which is used for butting against the inner side wall of the mounting hole, and a driving assembly which is used for driving the butting rod to rotate is arranged between the butting rod and the connecting rod; one end of the connecting rod, which is far away from the abutting rod, is provided with an abutting block which is abutted against one side of the baffle, which is far away from the mounting hole. After the construction in the foundation ditch is accomplished, constructor pulls down the connecting rod, can pull down the baffle to the used repeatedly of baffle is favorable to reducing construction cost.
Description
Technical Field
The application relates to the technical field of foundation pit construction, in particular to a foundation pit supporting structure and a construction method thereof.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the base elevation and the base plane size, and is used for the construction of the foundation of a building or the construction of an underground building.
When the foundation pit is excavated and constructed, a supporting structure is generally required to be constructed so as to reduce the risk of accidents such as collapse of the foundation pit. Common foundation pit supporting structures comprise row pile supporting, underground continuous wall supporting, reinforced concrete inner support supporting and the like.
In view of the above-mentioned related technologies, the inventor believes that the constructions such as row pile support, underground continuous wall support, reinforced concrete inner support, etc. all need to be cast in situ concrete during construction, and the construction cost is high, so the improvement is needed.
Disclosure of Invention
In order to solve the problem that the construction cost of foundation pit supporting is high, the application provides a foundation pit supporting structure and a construction method thereof.
In a first aspect, the present application provides a foundation pit supporting structure, which adopts the following technical scheme:
a foundation pit supporting structure comprises a plurality of baffles arranged on the inner side wall of a foundation pit, wherein all the baffles are sequentially arranged along the circumferential direction of the foundation pit, and a plurality of connecting rods are connected between each baffle and the inner side wall of the foundation pit; a connecting hole penetrates through the position, located on each connecting rod, of each baffle plate along the thickness direction of the baffle plate, a mounting hole is formed in the position, located on each connecting hole, of the foundation pit, and one end of each connecting rod is inserted into the corresponding mounting hole through the connecting hole; an abutting rod used for abutting against the inner side wall of the mounting hole is rotatably arranged at one end, located in the mounting hole, of the connecting rod, and a driving assembly used for driving the abutting rod to rotate is arranged between the abutting rod and the connecting rod; one end of the connecting rod, which is far away from the abutting rod, is provided with an abutting block which abuts against one side, far away from the mounting hole, of the baffle.
By adopting the technical scheme, the baffle is arranged on the inner side wall of the foundation pit so as to reduce the risk of collapse of the edge of the foundation pit; after one end of the connecting rod is inserted into the mounting hole through the connecting hole, the abutting rod is rotated through the driving assembly to enable the abutting rod to abut against the inner side wall of the mounting hole, then the connecting rod is pulled outwards to enable the abutting rod to further abut against the inner side wall of the mounting hole, and finally the abutting block is installed to abut against and fix the baffle plate, so that the baffle plate can be fixed, and the possibility that the baffle plate is inclined and collapsed due to extrusion of soil is reduced; after the construction in the foundation ditch is accomplished, constructor pulls down the connecting rod, can dismantle the baffle to reuse the baffle, thereby be favorable to reducing construction cost.
Optionally, the driving assembly includes a driving wheel fixedly connected to the abutment rod, a driving bar slidably connected to the connecting rod along the length direction of the connecting rod, and a driving screw rotatably connected to the driving bar; the driving wheel is rotationally connected with the connecting rod; the driving strip is sequentially provided with a plurality of tooth grooves along the length direction of the connecting rod, and the driving wheel is sequentially and fixedly provided with a plurality of gear teeth matched with the tooth grooves along the circumferential direction; the driving screw is in threaded connection with the connecting rod; one end of the driving screw rod, which is far away from the driving strip, extends to the outside of the connecting hole along the length direction of the connecting rod to the direction of the connecting hole.
By adopting the technical scheme, the driving screw rod is rotated to drive the driving strip to move; the teeth of a cogwheel and tooth's socket cooperation, the drive strip can drive the drive wheel and rotate to the drive is supported and is connect the pole and rotate, simple structure, the simple operation.
Optionally, a positioning block is fixedly arranged at one end of the driving screw rod, which is located outside the connecting hole, and a limiting block used for abutting against the positioning block is fixedly arranged on the connecting rod; when the locating piece during with the stopper butt, the length direction of butt pole sets up along the length direction vertically direction with the connecting rod.
By adopting the technical scheme, the driving screw can drive one end of the abutting rod, which is far away from the connecting rod, to be inserted into soil; when the positioning block abuts against the limiting block, the abutting rod rotates to a state that the abutting rod tends to be perpendicular to the connecting rod, so that the stress area of the abutting rod along the length direction of the connecting rod is increased, and the abutting stability of the abutting rod and soil is improved; the positioning block is tightly abutted to the limiting block, so that the side wall of the external thread of the driving screw is tightly abutted to the side wall of the internal thread of the connecting rod, the driving screw is locked, and the possibility that the driving screw rotates due to the vibration of site construction so that the abutting rod is loosened is reduced.
Optionally, a supporting block for abutting against the abutting rod is fixedly arranged on one side, away from the connecting hole, of the connecting rod.
Through adopting above-mentioned technical scheme, the supporting shoe can support the butt pole to improve the stability that the inside wall of butt pole support tight mounting hole, thereby improve the stability that the baffle blockked earth.
Optionally, the positions of one side of the connecting hole and the two sides of the connecting rod in the width direction are obliquely provided with the abdicating surfaces.
Through adopting above-mentioned technical scheme, the face of stepping down can reduce the size of one side of the correspondence of butt joint pole to insert to establish in the earth in the butt joint pole, thereby be convenient for drive screw's rotation, it is more convenient, laborsaving to operate.
Optionally, a containing cavity is arranged inside one end, close to the abutting rod, of the connecting rod, and a containing hole communicated with the containing cavity is formed in the position, located on the abutting rod, of the connecting rod.
Through adopting above-mentioned technical scheme, when the connecting rod is retrieved to needs, the butt joint pole is to connecting rod direction pivoted in-process, and the butt joint pole can drive the earth that drops by the inside wall of mounting hole and remove to accomodating the intracavity by accomodating the hole to reduce earth and hinder the butt joint pole to connecting rod direction pivoted possibility, so that the accomodating of butt joint pole, thereby the dismantlement of the connecting rod of being convenient for is retrieved.
Optionally, a reinforcing rod is connected between any two adjacent baffles.
Through adopting above-mentioned technical scheme, the stiffener is with two adjacent baffle interconnect to improve the stability of baffle, further reduce the crooked, the collapse possibility of baffle.
Optionally, each baffle is located the position of corresponding stiffener and all is used for the joint ring board of joint stiffener through screw fixedly connected with.
By adopting the technical scheme, the clamping ring plate is detachably connected with the baffle plate through the screw, so that the flatness of the surface of the baffle plate is favorably ensured, and the baffle plate is conveniently inserted into the ground; the clamping ring plate is clamped with the reinforcing rod, and the structure is simple and the operation is convenient.
Optionally, the position that the reinforcing plate is located every joint ring plate all is provided with the joint groove that is used for supplying the joint ring plate joint that corresponds.
Through adopting above-mentioned technical scheme, joint crown plate joint in the joint inslot can restrict the stiffener along self length direction's removal to improve the stability of being connected between stiffener and the baffle.
In a second aspect, the present application provides a construction method for a foundation pit supporting structure, which adopts the following technical scheme:
a construction method of a foundation pit supporting structure comprises the following construction procedures:
s1, placing a baffle: inserting the baffle plate from top to bottom at the edge position of the pre-dug foundation pit to form an annular enclosure;
s2, excavating a foundation pit: excavating the inner part of the area surrounded by all the baffles downwards to a certain depth so as to expose part of the connecting holes;
s3, mounting a connecting rod: drilling a mounting hole at the position of each exposed connecting hole, wherein the mounting hole is aligned with the connecting hole; then inserting one end of the connecting rod, which is provided with the abutting rod, into the mounting hole from the connecting hole; then the abutting rod is driven to rotate through the driving assembly, so that the abutting rod is abutted against the inner side wall of the mounting hole; finally, mounting a butting block;
s4: and S2 and S3 are circularly carried out until the foundation pit is excavated to a specified depth position.
Through adopting above-mentioned technical scheme, insert the baffle in advance and establish to the underground, then excavate the foundation ditch on one side, erection joint pole is with fixed stop on one side, can reduce the risk that the foundation ditch excavation in-process takes place to collapse, and the construction is safer.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the baffle is fixed on the inner side wall of the foundation pit through the connecting rod, so that the stability of the baffle is improved, and the risks of inclination and collapse of the baffle due to extrusion of the baffle by soil at the edge of the foundation pit are reduced; the baffle can reduce the possibility of collapse of the edge of the foundation pit; the baffle can be disassembled by disassembling the connecting rod so as to reuse the baffle, thereby being beneficial to reducing the construction cost;
2. the containing hole is matched with the containing cavity to contain the fallen soil, so that the butt-joint rod can rotate towards the direction of the connecting rod conveniently, and the connecting rod can be recovered conveniently;
3. the reinforcing rod can further improve the fixed stability of baffle, reduces the risk that the baffle collapses.
Drawings
Fig. 1 is a schematic overall structure diagram of a foundation pit supporting structure according to the present application.
Fig. 2 is a schematic sectional view taken along line a-a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 2.
Fig. 4 is an enlarged view of the portion C in fig. 2.
Fig. 5 is a schematic view of the structure of the connecting rod.
Description of reference numerals:
1. a baffle plate; 11. connecting holes; 2. a foundation pit; 21. mounting holes; 3. a connecting rod; 31. a butting rod; 311. a abdication surface; 32. a drive assembly; 321. a drive wheel; 3211. gear teeth; 322. a drive bar; 3221. a tooth socket; 323. a drive screw; 3231. positioning blocks; 33. a butting block; 34. a sliding hole; 35. a support block; 36. a receiving cavity; 361. a receiving hole; 37. a limiting block; 371. a connecting rod; 4. a reinforcing bar; 41. clamping a ring plate; 42. a clamping groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a foundation ditch supporting construction. Referring to fig. 1, a foundation pit supporting structure includes a plurality of baffles 1, and all baffles 1 are arranged end to end in the inside wall of foundation pit 2 along the circumference of foundation pit 2 in proper order. In this embodiment, the baffle 1 is a steel plate, and the cross section of the steel plate is in a shape like a Chinese character ji, so as to improve the strength of the steel plate. The length direction of each baffle 1 is arranged along the depth direction of the foundation pit 2, and the lower end of each steel plate is inserted into the bottom of the foundation pit 2.
Referring to fig. 1 and 2, a plurality of connecting rods 3 are connected between each baffle plate 1 and the inner side wall of the foundation pit 2, all the connecting rods 3 are sequentially arranged into a plurality of groups along the length direction of the baffle plate 1, and all the connecting rods 3 of each group are sequentially arranged at intervals along the width direction of the baffle plate 1; all be connected with stiffener 4 between two arbitrary adjacent baffles 1 to improve the fixed stability of baffle 1. The number of the baffle plates 1 connected with the same reinforcing rod 4 can be two, three, four or more; in this embodiment, the number of the baffle plates 1 connected to the same reinforcing rod 4 is three.
Referring to fig. 2 and 3, a snap ring plate 41 is arranged at the position of each baffle plate 1 corresponding to the connecting rod 3, and the snap ring plate 41 is semi-annular; the reinforcing rod 4 is provided with a clamping groove 42 at the position of each clamping ring plate 41. When the reinforcing rod 4 is installed, a constructor places the reinforcing rod 4 at a preset position, then clamps the clamping ring plate 41 in the clamping groove 42, and then fixes the two ends of the clamping ring plate 41 and the corresponding baffle 1 through screws.
Referring to fig. 2 and 3, the position that baffle 1 is located every connecting rod 3 has all seted up connecting hole 11 along self thickness direction, and the mounting hole 21 has all been seted up along the thickness direction of baffle 1 to the inside wall that foundation ditch 2 is located every connecting hole 11 position. One end of the connecting rod 3 is positioned in the mounting hole 21, and the other end of the connecting rod 3 penetrates through the connecting hole 11 and is positioned outside the connecting hole 11.
Referring to fig. 2 and 3, an end of the connecting rod 3 located in the mounting hole 21 is provided with an abutting rod 31, and one end of the abutting rod 31 is rotatably connected with the connecting rod 3. A driving component 32 is arranged between the abutting rods 31 and the connecting rods 3; the driving component 32 can drive the abutting rod 31 to rotate so as to drive the abutting rod 31 to abut against the inner side of the mounting hole 21. The connecting rod 3 is provided with a butt block 33 at one end outside the connecting hole 11, and the butt block 33 is in threaded connection with the outer peripheral wall of the connecting rod 3. When the connecting rod 3 is installed, a constructor inserts one end of the connecting rod 3, which is provided with the abutting rod 31, into the installation hole 21 through the connecting hole 11; then, the constructor operates the driving assembly 32 to make the abutting rod 31 abut against the inner side wall of the mounting hole 21; then, the operator rotates the abutting block 33 until the abutting block 33 abuts against the baffle 1; finally, the constructor continues to rotate the abutting block 33 until the abutting block 33 abuts against the baffle 1.
Referring to fig. 4 and 5, the number of the abutment levers 31 connected to the same connecting rod 3 is plural; in the present embodiment, the number of the abutment levers 31 is four. All the corresponding abutment rods 31 are arranged at intervals in sequence along the circumferential direction of the connecting rod 3. The driving assembly 32 includes a driving wheel 321, a driving bar 322, and a driving screw 323. The number of the driving wheels 321 is the same as the number of the abutting rods 31, each driving wheel 321 is welded and fixed at one end of the corresponding abutting rod 31 close to the connecting rod 3, and the driving wheels 321 are rotatably connected with the connecting rod 3 through pin shafts.
Referring to fig. 4, a sliding hole 34 is formed inside one end of the connecting rod 3 close to the abutting rod 31 along the length direction of the connecting rod 3; the driving bar 322 is slidably connected with the inner side wall of the sliding hole 34. A plurality of tooth grooves 3221 are formed in the side wall of each driving bar 322 facing each butting bar 31, and all the tooth grooves 3221 on each side are sequentially arranged at intervals along the length direction of the driving bar 322; a plurality of gear teeth 3211 are integrally formed on the outer sidewall of each driving wheel 321, and all the corresponding gear teeth 3211 are sequentially arranged at intervals in the circumferential direction of the driving wheel 321. The gear 3211 is matched with the gear slot 3221, and the driving bar 322 moves to drive the driving wheel 321 to rotate, so as to drive the connecting rod 31 to rotate.
Referring to fig. 4 and 5, one end of the driving screw 323 is rotatably connected to the driving bar 322 about its own axis, and the other end of the driving screw 323 extends along the length direction of the connecting rod 3 to the outside of the end of the connecting rod 3 away from the abutting rod 31. The peripheral wall of one end of the driving screw 323 away from the abutting rod 31 is in threaded connection with the connecting rod 3; the driving screw 323 is rotated to drive the driving bar 322 to move, so as to drive the connecting rod 31 to rotate. A supporting block 35 is fixedly welded on the peripheral wall of the connecting rod 3, which is positioned on one side of the abutting rod 31 away from the connecting hole 11; the abutting rod 31 can rotate to the state that the abutting rod is abutted to the supporting block 35, and at the moment, the supporting block 35 supports the abutting rod 31 so as to improve the stability that the abutting rod 31 abuts against the inner side wall of the mounting hole 21.
Referring to fig. 4 and 5, receding surfaces 311 are obliquely formed on both sides of the abutting rod 31 in the width direction, and the receding surfaces 311 are located on one side of the abutting rod 31 facing the supporting block 35; in this embodiment, the receding surfaces 311 on both sides are intersected on the side close to the supporting block 35, so that the cross section of the abutting rod 31 is triangular, the abutting rod 31 is conveniently inserted into the inner side wall of the mounting hole 21, the contact area between the abutting rod 31 and the soil is increased, and the stability of the abutting rod 31 abutting against the soil is further improved.
Referring to fig. 4 and 5, a receiving cavity 36 is opened inside one end of the connecting rod 3 close to the abutting rod 31; the peripheral wall of the connecting rod 3 at the position of each abutting rod 31 is provided with a containing hole 361 communicated with the containing cavity 36, so that the soil falling off from the inner side wall of the mounting hole 21 can be conveniently contained, and the abutting rods 31 can rotate and be contained towards the connecting rod 3 conveniently.
Referring to fig. 4 and 5, a positioning block 3231 is welded and fixed to one end of the driving screw 323 located outside the connecting rod 3, and the positioning block 3231 is annular; one end of the connecting rod 3 close to the positioning block 3231 is provided with a limiting block 37, the limiting block 37 is located on one side of the positioning block 3231 away from the connecting rod 3, and the limiting block 37 is welded and fixed with the connecting rod 3 through a connecting rod 371. The driving screw 323 is rotated, and when the positioning block 3231 abuts against the limiting block 37, the length direction of the abutting rod 31 is arranged along the direction perpendicular to the connecting rod 3, so as to further improve the stability of the abutting rod 31 abutting against the soil.
The implementation principle of the foundation pit supporting structure in the embodiment of the application is as follows:
during construction, the baffle 1 is placed at the position of the inner side wall of the foundation pit 2; then, inserting one end of the connecting rod 3, which is provided with the abutting rod 31, into the mounting hole 21 through the connecting hole 11; then, the driving screw 323 is rotated; when the positioning block 3231 abuts against the limiting block 37, the constructor installs the abutting block 33 to abut against the baffle 1; finally, the constructor installs the reinforcing rod 4. The butt pole 31 supports the earth of tight mounting hole 21 inside wall position, and butt piece 33 supports tight baffle 1 to make baffle 1 support tightly with the inside wall of foundation ditch 2, take place the risk of collapsing with the earth that reduces the inside wall of foundation ditch 2.
After the construction in the foundation pit 2 is finished, constructors firstly detach the reinforcing rods 4; then, the constructor loosens the abutting block 33, then moves the connecting rod 3 inward, and then rotates the driving screw 323 in the reverse direction to receive the abutting rod 31; finally, operating personnel pulls out connecting rod 3, can pull down baffle 1 to baffle 1's used repeatedly, thereby reduce construction cost.
The embodiment also discloses a construction method of the foundation pit supporting structure, which comprises the following construction procedures:
s1, placing a baffle: according to design requirements, a constructor uses lime powder to draw the outline of the foundation pit 2 on the ground at the position where the foundation pit 2 is dug in advance; then, a constructor lifts the baffle plate 1 by a crane and inserts the baffle plate 1 at the edge position of the outline of the foundation pit 2 from top to bottom to form an annular enclosure shape;
s2, excavating a foundation pit: after the baffles 1 are all inserted into the ground along the contour of the foundation pit 2, a constructor excavates earth downwards to a certain depth in an area surrounded by all the baffles 1 so as to expose a part of connecting holes 11 of the baffles 1;
s3, mounting a connecting rod: after the connecting holes 11 of one part of the baffle 1 are exposed, a constructor drills mounting holes 21 at the position of each exposed connecting hole 11 through a drilling machine, and the mounting holes 21 are aligned with the connecting holes 11; after the installation hole 21 is drilled, a constructor inserts one end of the connecting rod 3, which is provided with the abutting rod 31, into the installation hole 21 through the connecting hole 11; then, the constructor rotates the driving screw 323 to make the positioning block 3231 abut against the limiting block 37; finally, the constructor installs the abutting block 33 and rotates the abutting block 33 until the abutting block 33 abuts against the baffle 1;
s31, mounting a reinforcing rod: a constructor places the reinforcing rod 4 at a designated position and then fixes the clamping ring plate 41 and the baffle plate 1 through screws so as to fix the reinforcing rod 4;
s4: and S2, S3 and S31 are carried out circularly until the foundation pit 2 is excavated to a specified depth position.
However, S31 may be performed simultaneously with S3, or S31 may be performed first and then S3 may be performed.
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 foundation ditch supporting construction which characterized in that: the device comprises a plurality of baffles (1) arranged on the inner side wall of a foundation pit (2), wherein all the baffles (1) are sequentially arranged along the circumferential direction of the foundation pit (2), and a plurality of connecting rods (3) are connected between each baffle (1) and the inner side wall of the foundation pit (2); connecting holes (11) penetrate through the positions, located on the connecting rods (3), of the baffles (1) along the thickness direction of the baffles, mounting holes (21) are formed in the positions, located on the connecting holes (11), of the foundation pits (2), and one ends of the connecting rods (3) are inserted into the corresponding mounting holes (21) through the connecting holes (11); one end, located in the mounting hole (21), of the connecting rod (3) is rotatably provided with a butting rod (31) which is used for butting against the inner side wall of the mounting hole (21), and a driving assembly (32) which is used for driving the butting rod (31) to rotate is arranged between the butting rod (31) and the connecting rod (3); one end of the connecting rod (3) far away from the abutting rod (31) is provided with an abutting block (33) which abuts against one side of the baffle (1) far away from the mounting hole (21).
2. A foundation pit supporting construction according to claim 1, wherein: the driving assembly (32) comprises a driving wheel (321) fixedly connected with the abutting rod (31), a driving strip (322) connected with the connecting rod (3) in a sliding mode along the length direction of the connecting rod (3), and a driving screw rod (323) connected with the driving strip (322) in a rotating mode; the driving wheel (321) is rotationally connected with the connecting rod (3); the driving bar (322) is sequentially provided with a plurality of tooth grooves (3221) along the length direction of the connecting rod (3), and the driving wheel (321) is sequentially and fixedly provided with a plurality of gear teeth (3211) matched with the tooth grooves (3221) along the circumferential direction; the driving screw rod (323) is in threaded connection with the connecting rod (3); one end, far away from the driving bar (322), of the driving screw rod (323) extends to the outside of the connecting hole (11) along the length direction of the connecting rod (3) to the direction of the connecting hole (11).
3. A foundation pit supporting construction according to claim 2, wherein: a positioning block (3231) is fixedly arranged at one end of the driving screw rod (323) positioned outside the connecting hole (11), and a limiting block (37) used for being abutted against the positioning block (3231) is fixedly arranged on the connecting rod (3); when the positioning block (3231) is abutted to the limiting block (37), the length direction of the abutting rod (31) is arranged along the direction vertical to the length direction of the connecting rod (3).
4. A foundation pit supporting construction according to claim 1, wherein: and a supporting block (35) used for being abutted with the abutting rod (31) is fixedly arranged on one side, away from the connecting hole (11), of the abutting rod (31) of the connecting rod (3).
5. A foundation pit supporting construction according to claim 1, wherein: the positions, which are far away from one side of the connecting hole (11) of the abutting rod (31) and located on two sides of the width direction of the abutting rod (31), are obliquely provided with receding surfaces (311).
6. A foundation pit supporting construction according to claim 1, wherein: the connecting rod (3) is close to the inside of the one end of butt-joint pole (31) and is provided with accomodates chamber (36), the position that connecting rod (3) is located butt-joint pole (31) is provided with and accomodates communicating hole (361) in chamber (36).
7. A foundation pit supporting construction according to claim 1, wherein: and a reinforcing rod (4) is connected between any two adjacent baffles (1).
8. A foundation pit supporting construction according to claim 7, wherein: every baffle (1) all is used for joint ring plate (41) of joint stiffener (4) through screw fixedly connected with in the position that corresponds stiffener (4).
9. A foundation pit supporting construction according to claim 8, wherein: the reinforcing plate is provided with a clamping groove (42) used for clamping the corresponding clamping ring plate (41) at the position of each clamping ring plate (41).
10. A method of constructing a foundation pit supporting structure according to any one of claims 1 to 9, wherein: the method comprises the following construction procedures:
s1, placing a baffle: inserting the baffle (1) into the edge position of the pre-dug foundation pit (2) from top to bottom to form an annular enclosure;
s2, excavating a foundation pit: the inner part of the area surrounded by all the baffles (1) is dug downwards to a certain depth so as to expose part of the connecting holes (11);
s3, mounting a connecting rod: drilling a mounting hole (21) at the position of each exposed connecting hole (11), wherein the mounting hole (21) is aligned with the connecting hole (11); then inserting one end of the connecting rod (3) provided with the abutting rod (31) into the mounting hole (21) through the connecting hole (11); then, the abutting rod (31) is driven to rotate through the driving assembly (32), so that the abutting rod (31) abuts against the inner side wall of the mounting hole (21); finally, installing an abutting block (33);
s4: and S2 and S3 are circularly carried out until the foundation pit (2) is excavated to a specified depth position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111228998.7A CN113931195A (en) | 2021-10-21 | 2021-10-21 | Foundation pit supporting structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111228998.7A CN113931195A (en) | 2021-10-21 | 2021-10-21 | Foundation pit supporting structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960679A (en) * | 2022-06-23 | 2022-08-30 | 江苏金云建设工程有限公司 | Large-diameter foundation pit fender pile and construction process thereof |
Citations (6)
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| CN114960679B (en) * | 2022-06-23 | 2023-10-03 | 江苏金云建设工程有限公司 | Large-diameter foundation pit fender post and construction process thereof |
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