CN113565106A - Novel stable sedimentation method for foundation pit construction - Google Patents
Novel stable sedimentation method for foundation pit construction Download PDFInfo
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- CN113565106A CN113565106A CN202110949322.0A CN202110949322A CN113565106A CN 113565106 A CN113565106 A CN 113565106A CN 202110949322 A CN202110949322 A CN 202110949322A CN 113565106 A CN113565106 A CN 113565106A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000004062 sedimentation Methods 0.000 title claims abstract description 21
- 230000008093 supporting effect Effects 0.000 claims abstract description 86
- 239000003550 marker Substances 0.000 claims description 21
- 239000002689 soil Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 26
- 238000009412 basement excavation Methods 0.000 abstract description 10
- 238000003466 welding Methods 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
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Abstract
The application relates to a novel stable sedimentation method for foundation pit construction, which relates to the field of foundation pit construction and comprises S1 and driving in supporting piles; s2, positioning the waist rail; s3, connecting the waist beam; s4, excavating a drainage well and a relief well; s5, detecting the inclination; and S6, finishing excavation of the foundation pit. This application has the effect of being convenient for to fender pile gradient adjustment to be convenient for install waist rail and additional baffle, promote work efficiency greatly, whole operation is convenient fast, has very big market application effect.
Description
Technical Field
The application relates to the field of foundation pit construction, in particular to a novel stable sedimentation method for foundation pit construction.
Background
Along with the development of the industrial and civil building industry, various complex and large-scale engineering buildings are increased day by day, the construction of the engineering buildings changes the original state of the ground, and applies a certain pressure to the foundation of the building, which inevitably causes the deformation of the foundation and the surrounding stratum, so that the necessity and the importance of the settlement observation of the building are more obvious in order to ensure the normal service life of the building and the safety of the building and provide reliable data and corresponding settlement parameters for the future exploration design construction.
The existing Chinese patent with the patent application number of CN202010776626.7U provides a stable sedimentation method for foundation pit construction, relates to the field of road pile foundation construction, and comprises 7 main steps, wherein the stability of a fence in sedimentation is mainly ensured. When in application, the foundation pit supporting device is required. The supporting pile group is formed by a plurality of supporting piles in an end-to-end connection mode, the supporting piles are fixedly connected with waist beams, polygonal supporting frames are formed in the supporting pile group after the adjacent waist beams are connected end to end, an inwards concave accommodating groove is formed in the bottom of each supporting pile, an air bag is arranged in each accommodating groove, an air pipe connected with the air bag is arranged in each supporting pile, and an air inlet connected with the air bag is formed in the top of each supporting pile.
In view of the above related technologies, the inventor believes that the waist rail is installed on each support pile, the waist rail and the support pile need to be welded first, then the adjacent two waist rails are welded, and the defect that the waist rail is prone to position deviation exists because only manual positioning is needed in the process of welding the extreme waist rail and the support pile.
Disclosure of Invention
In order to solve the problem that position deviation occurs in the welding process of adjacent waist beams, the application provides a novel stable sedimentation method for foundation pit construction.
The application provides a novel foundation pit construction stable sedimentation method, which adopts the following technical scheme:
a novel stable sedimentation method for foundation pit construction comprises the following steps: s1, driving a support pile: before the foundation pit is excavated, a supporting pile group is driven into the edge of the foundation pit to surround the foundation pit, and an inflatable air bag is arranged at the bottom of the supporting pile; s2, positioning of the wale: the method comprises the following steps that firstly, the waist beams are pre-positioned on the surfaces of supporting piles, the waist beams on each supporting pile are ensured to be in the same horizontal position, and the waist beams at the corner positions are set to be chamfers; s3, connecting the wale: after the waist beams are pre-positioned, the waist beams are welded, and the adjacent two waist beams are adjacent end to end; s4, excavating a drainage well and a relief well: arranging a dredging well in the foundation pit area, and arranging a relief well outside the support pile group; s5, detecting inclination: detecting the inclination state of the supporting pile group through a sensor in the starting process, and if the supporting pile group is inclined, adjusting the verticality of the supporting pile group after the air bag is inflated; if the supporting pile group is settled, an additional baffle is arranged at the top of the supporting pile, and an air inlet is also formed in the additional baffle; and S6, after the foundation pit is excavated and the support piles are settled and stabilized, carrying out soil solidification treatment on the bottom of the foundation pit, and then carrying out pile foundation pouring.
By adopting the technical scheme, before the foundation pit is excavated, the supporting piles are convenient to install in the foundation pit, the supporting piles form a regular-hexagon supporting pile group, the waist beam and the surface of the supporting pile are pre-positioned, so that the situation that the position deviation does not occur in the process of welding the waist beam is convenient to ensure, the pre-positioning effect of the positioning disc on the waist beam is completed, and two adjacent waist beams are convenient to connect together in a welding mode; excavating a dredging well and a relief well; when the inclination of the supporting pile group is adjusted and the air bag is inflated, the corresponding supporting pile is jacked up, so that the vertical degree of the supporting pile can be adjusted conveniently; when the supporting pile group is settled, an additional baffle is installed at the top of the supporting pile to ensure that the end part of the supporting pile extends out of the foundation pit, the foundation pit is excavated, soil solidification treatment is carried out on the bottom of the foundation pit after the supporting pile is settled stably, and then pile foundation pouring is carried out.
Optionally, the support pile is fixedly connected with at least two fixing rods, the waist rail penetrates through a plurality of fixing holes for the fixing rods to pass through, and the length of each fixing rod is equal to the depth of each fixing hole.
Through adopting above-mentioned technical scheme, the dead lever is pegged graft in the fixed orifices, and the fixed rod supports the waist rail, reduces the probability that the waist rail takes place the skew.
Optionally, a positioning disc is detachably arranged at the end of the fixing rod, a positioning hole is formed in the fixing rod, a positioning rod is fixedly connected to the positioning disc, the positioning rod is inserted into the positioning hole, and a locking piece is arranged between the positioning rod and the fixing rod.
Through adopting above-mentioned technical scheme, under the effect of locking piece, the locating lever and the dead lever locking of positioning disk, the positioning disk with the waist rail restriction on a fender pile, the completion is to the prepositioning effect of waist rail.
Optionally, the locking piece is set as a convex block, the convex block is fixedly connected with the peripheral wall of the end part of the positioning rod, the inner wall of the positioning hole is provided with a sliding groove, the sliding groove is parallel to the axis direction of the positioning hole, the side wall of the bottom of the sliding groove is provided with a clamping groove, the clamping groove is set to be arc-shaped, the axis of the cross-section circle where the clamping groove is located is parallel to the length direction of the sliding groove, the convex block rotates to the inside of the clamping groove after sliding in the sliding groove, and the end surface of the positioning disc is abutted to the surface of the waist beam.
Through adopting above-mentioned technical scheme, the lug slides the back in the spout, when the lug moved to joint groove opening part, the drive lug rotated to the joint inslot, and the lug was restricted along the motion of the axis direction of locating hole this moment, and positioning disk terminal surface and waist rail surface butt realize the positioning disk to the restriction effect of waist rail this moment.
Optionally, when the inclination of the support pile is adjusted in S5, a threaded hole is formed in the top of the support pile, a marker post is connected to the threaded hole of the support pile in a threaded manner, the top end of the marker post is arranged in a pointed manner, laser levels are placed on two planes perpendicular to each other of the marker post, and the laser levels are aligned to the top end of the marker post.
Through adopting above-mentioned technical scheme, the laser level is aimed at the sighting rod top, and more downwards, the ray that the laser level jetted out is more obvious with the distance between the sighting rod, and then is convenient for carry out the vertical degree to the fender pile and adjust.
Optionally, an additional rod is fixedly connected to the bottom end of the additional baffle, an additional hole is formed in the top end of the supporting pile, the additional rod is inserted into the additional hole, and an air inlet hole in the supporting pile is communicated with an air inlet hole in the additional plate.
Through adopting above-mentioned technical scheme, the additional rod is pegged graft in the downthehole back of additional, is convenient for to the location effect of a fender pile and additional baffle, and guarantees the intercommunication effect of air inlet, guarantees the normal work of gasbag.
Optionally, the supporting pile is characterized in that supporting blocks are fixedly connected to the inner side wall of the top end of the supporting pile, threaded rods horizontally arranged are fixedly connected to the inner side wall of the bottom end of the additional baffle, reinforcing rods horizontally arranged are fixedly connected to the inner side wall of the bottom end of the additional baffle, threaded sleeves are arranged on the outer peripheries of the reinforcing rods, the threaded rods are abutted to the end portions of the reinforcing rods, the threaded sleeves are in threaded connection with the threaded rods, and clamping assemblies are arranged between the threaded sleeves and the reinforcing rods.
Through adopting above-mentioned technical scheme, thread bush and threaded rod threaded connection, under the effect of joint subassembly, realize fixed effect between anchor strut and the threaded rod, it is fixed firm between fender pile and the additional baffle this moment, can be convenient for accomplish the fixed of fender pile and additional baffle, also can realize the recycle effect of additional baffle.
Optionally, the joint subassembly includes joint ring sum butt dish, the joint ring with the thread bush is kept away from in the one end fixed connection of threaded rod, the joint ring cover establish slide in outside the anchor strut, butt dish with the anchor strut is close to in the one end fixed connection of threaded rod, butt dish with joint ring butt.
Through adopting above-mentioned technical scheme, under the effect of thread bush and threaded rod threaded connection and the effect that the butt dish and joint ring drag each other, accomplish the effect of fixing firmly between additional baffle and the fender pile.
Optionally, the marker post is fixedly connected with two identification strips, and the two vertical planes where the identification strips are located are perpendicular to each other.
Through adopting above-mentioned technical scheme, the sign strip is used for calibrating the ray that the laser level appearance jetted out, and the plane that jets out when the laser level appearance coincides with the ray that corresponds, and then confirms that the sighting rod is vertical setting, accomplishes the regulation work to the fender pile straightness.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the supporting piles form a regular-hexagon supporting pile group, the waist beams and the surfaces of the supporting piles are pre-positioned, so that the waist beams are prevented from being displaced in the welding process, the pre-positioning effect of the positioning disc on the waist beams is achieved, and two adjacent waist beams are conveniently connected together in a welding mode;
2. after the convex block slides in the sliding groove, when the convex block moves to the opening of the clamping groove, the convex block is driven to rotate into the clamping groove, the movement of the convex block along the axis direction of the positioning hole is limited, the end surface of the positioning disc is abutted against the surface of the waist beam, the limiting effect of the positioning disc on the waist beam is realized, and the pre-positioning effect on the waist beam is completed;
3. the screw rod drives the clamping ring to move towards the direction of the butt joint disk, the clamping ring is abutted against the butt joint disk, and under the action of threaded sleeve and threaded rod threaded connection and the action of mutual dragging of the clamping ring and the butt joint disk, the effect of fixing and stabilizing the additional baffle and the support pile is achieved.
Drawings
FIG. 1 is a process flow diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 3 is an exploded view of a support pile, an additional baffle, a wale, a positioning rod, a positioning plate and a threaded sleeve in an embodiment of the present application;
FIG. 4 is a left side view of a support pile, an additional baffle, a wale, a positioning rod, a positioning plate and a threaded sleeve in an embodiment of the present application;
fig. 5 is a schematic view of a support pile, a laser level, a marker strip and a marker post in an embodiment of the present application.
Reference numerals: 1. supporting piles; 2. a wale; 3. an additional baffle plate; 4. fixing the rod; 5. a fixing hole; 6. positioning a plate; 7. positioning holes; 8. positioning a rod; 9. a bump; 10. a chute; 11. a clamping groove; 12. a marker post; 13. a laser level; 14. an additional rod; 15. an additional aperture; 16. a support block; 17. a threaded rod; 18. a threaded sleeve; 19. a reinforcing rod; 20. a snap ring; 21. a butting tray; 22. and (4) identifying the strip.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a novel foundation pit construction stable sedimentation method. Referring to fig. 1 and 2, a novel stable sedimentation method for foundation pit construction includes the following steps:
s1, driving the support pile 1: before a foundation pit is excavated, a supporting pile 1 is driven into the edge of the foundation pit, a plurality of supporting piles 1 form a supporting pile 1 group, the supporting pile 1 group surrounds the foundation pit, the depth of the supporting pile 1 group is greater than the excavation depth of the foundation pit, air bags are arranged in the supporting piles 1, the bottom of each supporting pile 1 is provided with an inwards concave accommodating groove, an air cylinder is arranged in each accommodating groove, an air pipe used for connecting the air bags is arranged in each supporting pile 1, and the top end of each supporting pile 1 is provided with an air inlet used for connecting the air pipe; and two adjacent supporting piles 1 are sealed and fixed by cement.
S2, positioning of the wale 2: the surface of the supporting pile 1 firstly carries out pre-positioning on the waist beam 2, the waist beam 2 on each supporting pile 1 is guaranteed to be located at the same horizontal position, the two fixing rods 4 are fixedly connected with the supporting pile 1, the fixing rods 4 are horizontally arranged, the fixing rods 4 are perpendicular to the plane where the supporting pile 1 is located, the waist beam 2 is provided with two fixing holes 5 in a penetrating mode, the fixing rods 4 penetrate out of the fixing holes 5, and the supporting effect of the fixing rods 4 on the waist beam 2 is achieved.
Referring to fig. 2 and 3, a positioning plate 6 is detachably disposed at the end of a fixing rod 4, the diameter of the end face circle of the positioning plate 6 is larger than the aperture of a fixing hole 5, a cylindrical positioning rod 8 is fixedly connected to the end face of the positioning plate 6, a positioning hole 7 is disposed at the center of the fixing rod 4, the positioning rod 8 is inserted into the positioning hole 7, a locking member is disposed between the positioning rod 8 and the fixing rod 4, the locking member is a projection 9, the projection 9 is fixedly connected to the peripheral wall of the end of the positioning rod 8, the length direction of the projection 9 is perpendicular to the axial direction of the positioning rod 8, a sliding groove 10 is disposed on the inner wall of the positioning hole 7, the sliding groove 10 is parallel to the axial direction of the positioning hole 7, a clamping groove 11 is disposed on the side wall of the bottom of the sliding groove 10, the clamping groove 11 is communicated with the sliding groove 10, the clamping groove 11 is arc-shaped, after the projection 9 slides in the sliding groove 10, when the projection 9 moves to the opening of the clamping groove 11, the projection 9 is driven to rotate to the clamping groove 11, at the moment, the movement of the convex block 9 along the axis direction of the positioning hole 7 is limited, the end surface of the positioning disc 6 is abutted against the surface of the waist rail 2, the limiting effect of the positioning disc 6 on the waist rail 2 is realized, and the pre-positioning effect on the waist rail 2 is completed.
S3, connecting the wale 2: after the waist beams 2 are pre-positioned, the waist beams 2 are welded, and two adjacent waist beams 2 are adjacent end to end; after waist rail 2 accomplished prepositioning, this embodiment adopts welding mode, connects two adjacent waist rails 2, and two waist rails 2 of turning position all set up to the chamfer, ensure that two adjacent waist rails 2 laminating are fixed, guarantee that waist rail 2 is to the fixed effect of being connected of fender pile 1.
S4, excavating a drainage well and a relief well: arranging a dredging well in the foundation pit area, wherein the depth of the dredging well is greater than the excavation depth of the foundation pit, arranging a relief well outside the support piles 1 group, the depth of the relief well is greater than the excavation depth of the foundation pit and less than the insertion depth of the support piles 1 group, then excavating the foundation pit, pumping water to the excavation area by the dredging well in the excavation process, and reducing the pressure of the soil layer outside the excavation area by the relief well;
s5, detecting inclination: the inclination state of the supporting pile 1 group is detected through a sensor in the starting process, if the supporting pile 1 group is inclined, after the air bag is inflated, the stressed area can be enlarged after the air bag is expanded to slow down the settlement or push out the corresponding supporting pile 1, and meanwhile, the air bag can be deflated to adjust the verticality of the supporting pile 1 group;
referring to fig. 3 and 5, in order to ensure the adjustment accuracy, a threaded hole is formed in the top of the support pile 1, a marker post 12 is in threaded connection with the threaded hole of the support pile 1, threads are arranged at the bottom end of the marker post 12 and are conveniently in threaded connection with the threaded hole, the top end of the marker post 12 is arranged in a pointed end manner, laser levels 13 are respectively placed on two mutually perpendicular planes of the marker post 12, in the operation process, the plane emitted by the laser levels 13 is aligned with the top end of the marker post 12, and if the marker post 12 deviates, the difference between the plane emitted by the laser levels 13 and the marker post 12 becomes more and more obvious downwards;
and the two sign strips 22 of mark pole 12 outer fixedly connected with, the vertical plane at two sign strips 22 places sets up for mutually perpendicular, sign strip 22 length direction along the length direction of mark pole 12, and sign strip 22 is used for calibrating the ray that laser level appearance 13 jetted out, and the plane that jets out when laser level appearance 13 coincides with the ray that corresponds, and then confirms that mark pole 12 is vertical setting, accomplishes the regulation work to fender pile 1 verticality.
Referring to fig. 3 and 4, after the supporting pile 1 set is settled, the top of the supporting pile 1 is ensured to extend out of the foundation pit all the time by installing the additional baffle 3, the additional baffle 3 is also provided with an air inlet, the bottom end of the additional baffle 3 is fixedly connected with an additional rod 14, the top end of the supporting pile 1 is provided with an additional hole 15, the additional rod 14 is inserted into the additional hole 15, and at the moment, the air inlet on the additional baffle 3 is communicated with the air inlet on the supporting pile 1, so that the normal inflation work of the air bag is ensured;
the equal fixedly connected with supporting shoe 16 of 1 top inside wall of fender pile, the vertical cross-section of supporting shoe 16 sets up to the L type, 16 inner wall fixed connection of supporting shoe has the threaded rod 17 that the level set up, the equal fixedly connected with anchor strut 19 that the level set up of 3 bottom inside walls of additional baffle, when additional rod 14 is pegged graft in additional hole 15, threaded rod 17 and 19 tip butt of anchor strut, anchor strut 19 overcoat is established and is slided threaded sleeve 18, threaded sleeve 18 and 17 threaded rod threaded connection, be provided with the joint subassembly between threaded sleeve 18 and the anchor strut 19.
Referring to fig. 3 and 4, the joint subassembly includes joint ring 20 and butt dish 21, joint ring 20 and thread bush 18 are kept away from the one end fixed connection in threaded rod 17, joint ring 20 cover is established and is slided outside stiffener 19, butt dish 21 and stiffener 19 are close to the one end fixed connection in threaded rod 17, drive thread bush 18 rotate and with threaded rod 17 threaded connection, threaded rod 17 drives joint ring 20 towards butt dish 21 direction motion, and joint ring 20 and butt dish 21 butt, under the effect of thread bush 18 and threaded rod 17 threaded connection and the effect that butt dish 21 and joint ring 20 drag each other, accomplish the effect of fixing firmly between additional baffle 3 and the fender pile 1.
And S6, after excavation of the foundation pit is finished and the support piles 1 settle stably, carrying out soil solidification treatment on the bottom of the foundation pit, then carrying out pile foundation pouring, and finally carrying out film waterproof sealing between the bottom of the pile foundation and the support piles 1.
The implementation principle of the novel foundation pit construction stable sedimentation method provided by the embodiment of the application is as follows: before excavation of a foundation pit, supporting piles 1 are convenient to mount in the foundation pit, a plurality of supporting piles 1 form a regular-hexagon supporting pile 1 group, waist beams 2 penetrate through fixing rods 4, driving positioning rods 8 are inserted into positioning holes 7, protruding blocks 9 move along sliding grooves 10, when the protruding blocks 9 move to the positions of clamping grooves 11, the protruding blocks 9 are driven to rotate into the clamping grooves 11, the pre-positioning effect of positioning discs 6 on the waist beams 2 is achieved, and two adjacent waist beams 2 are connected together in a welding mode; excavating a dredging well and a relief well; when the inclination of the supporting pile 1 group is adjusted, and the air bag is inflated, the corresponding supporting pile is jacked up, so that the vertical degree of the supporting pile 1 can be adjusted conveniently, and the vertical degree adjusting effect of the supporting pile 1 is improved under the action of the two laser levels 13 and the marker post 12; when the additional baffle 3 needs to be adjusted, the additional rod 14 is inserted into the additional hole 15, the reinforcing rod 19 is abutted against the end part of the threaded rod 17, the threaded sleeve 18 is driven to rotate, the threaded sleeve 18 is in threaded connection with the threaded rod 17, and the clamping ring 20 is moved to a position abutted against the abutting disc 21 to complete the fixing effect of the additional baffle 3 and the support pile 1; and after the excavation of the foundation pit is finished and the support piles 1 are settled and stabilized, carrying out soil solidification treatment on the bottom of the foundation pit, and then carrying out pile foundation pouring.
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 (9)
1. A novel stable sedimentation method for foundation pit construction is characterized in that: the method comprises the following steps:
s1, driving the support pile (1): before the foundation pit is excavated, a support pile (1) group is driven into the edge of the foundation pit to surround the foundation pit, and the bottom of the support pile (1) is provided with an inflatable air bag;
s2, positioning waist rail (2): the surface of each supporting pile (1) is pre-positioned on the waist beam (2) at first, so that the waist beams (2) on the supporting piles (1) are in the same horizontal position, and the waist beams (2) at the corner positions are set to be chamfers;
s3, connecting the wale (2): after the waist beams (2) are pre-positioned, the waist beams (2) are welded, and two adjacent waist beams (2) are adjacent end to end;
s4, excavating a drainage well and a relief well: a dredging well is arranged in the foundation pit area, and a relief well is arranged outside the supporting pile (1) group;
s5, detecting inclination: detecting the inclination state of the supporting pile (1) group through a sensor in the starting process, and if the supporting pile (1) group is inclined, adjusting the verticality of the supporting pile (1) group by inflating an air bag; if the supporting pile (1) set is settled, an additional baffle (3) is arranged at the top of the supporting pile (1), and an air inlet is also formed in the additional baffle (3);
and S6, after the foundation pit is excavated and the support piles (1) are settled and stabilized, carrying out soil solidification treatment on the bottom of the foundation pit, and then carrying out pile foundation pouring.
2. The novel foundation pit construction stable sedimentation method according to claim 1, characterized in that: the support pile (1) is fixedly connected with at least two fixing rods (4), the waist beam (2) penetrates through a plurality of fixing holes (5) through which the fixing rods (4) penetrate, and the length of each fixing rod (4) is equal to the depth of each fixing hole (5).
3. The novel foundation pit construction stable sedimentation method according to claim 2, characterized in that: the positioning plate (6) is detachably arranged at the end part of the fixing rod (4), the positioning hole (7) is formed in the fixing rod (4), the positioning plate (6) is fixedly connected with a positioning rod (8), the positioning rod (8) is inserted into the positioning hole (7), and a locking piece is arranged between the positioning rod (8) and the fixing rod (4).
4. The novel foundation pit construction stable sedimentation method according to claim 3, wherein: the locking piece sets up to lug (9), lug (9) with the perisporium fixed connection of locating lever (8) tip, locating hole (7) inner wall is provided with spout (10), spout (10) with the axis direction parallel arrangement of locating hole (7), spout (10) bottom lateral wall is provided with joint groove (11), joint groove (11) set up to the arc, just joint groove (11) place the axis of cross-section circle with spout (10) length direction parallel arrangement, lug (9) slide the back in spout (10) and rotate extremely in joint groove (11), positioning disk (6) terminal surface with waist rail (2) surface butt.
5. The novel foundation pit construction stable sedimentation method according to claim 1, characterized in that: when the inclination of the support pile (1) is adjusted in S5, a threaded hole is formed in the top of the support pile (1), the support pile (1) is in threaded connection with a marker post (12) in the threaded hole, the top end of the marker post (12) is arranged in a pointed end mode, laser levels (13) are placed on two planes perpendicular to each other of the marker post (12), and the laser levels (13) are aligned to the top end of the marker post (12).
6. The novel foundation pit construction stable sedimentation method according to claim 5, wherein: the bottom end of the additional baffle (3) is fixedly connected with an additional rod (14), an additional hole (15) is formed in the top end of the supporting pile (1), the additional rod (14) is inserted into the additional hole (15), and an air inlet hole in the supporting pile (1) is communicated with an air inlet hole in the additional plate.
7. The novel foundation pit construction stable sedimentation method according to claim 6, wherein: the supporting pile is characterized in that supporting blocks (16) are fixedly connected to the inner side wall of the top end of the supporting pile (1), threaded rods (17) are fixedly connected to the inner walls of the supporting blocks (16) and horizontally arranged, fixing rods (4) are fixedly connected to the inner side wall of the bottom end of the additional baffle (3) and horizontally arranged, threaded sleeves (18) are sleeved outside the fixing rods (4), the threaded rods (17) are abutted to the end portions of the fixing rods (4), the threaded sleeves (18) are in threaded connection with the threaded rods (17), and clamping components are arranged between the threaded sleeves (18) and the fixing rods (4).
8. The novel foundation pit construction stable sedimentation method according to claim 7, wherein: the joint subassembly includes joint ring (20) and butt dish (21), joint ring (20) with thread bush (18) keep away from in the one end fixed connection of threaded rod (17), slip is established to joint ring (20) cover outside dead lever (4), butt dish (21) with dead lever (4) are close to in the one end fixed connection of threaded rod (17), butt dish (21) with joint ring (20) butt.
9. The novel foundation pit construction stable sedimentation method according to claim 8, wherein: the marker post (12) is fixedly connected with two identification strips (22) outside, and the vertical planes of the two identification strips (22) are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949322.0A CN113565106A (en) | 2021-08-18 | 2021-08-18 | Novel stable sedimentation method for foundation pit construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110949322.0A CN113565106A (en) | 2021-08-18 | 2021-08-18 | Novel stable sedimentation method for foundation pit construction |
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| CN (1) | CN113565106A (en) |
Citations (7)
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| CN113152479A (en) * | 2021-04-19 | 2021-07-23 | 武汉市金港岩土工程有限公司 | Accurate installation method of steel lattice column for foundation pit support |
| CN113183348A (en) * | 2021-03-03 | 2021-07-30 | 广西梧州国龙再生资源发展有限公司 | Waste plastic recycling and granulating process |
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| US20160215472A1 (en) * | 2008-01-28 | 2016-07-28 | Darin R. Kruse | Apparatus and Methods for Underground Structures and Construction Thereof |
| CN209585016U (en) * | 2018-12-03 | 2019-11-05 | 嘉兴市康立德构件股份有限公司 | A kind of basis hollow square column |
| CN111576417A (en) * | 2020-06-11 | 2020-08-25 | 湖北鄂东桩基工程有限公司 | Static pressure pile machine |
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Application publication date: 20211029 |