CN111705810B - Deep foundation pit slope protection surface multistage supporting structure and supporting method thereof - Google Patents
Deep foundation pit slope protection surface multistage supporting structure and supporting method thereof Download PDFInfo
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- CN111705810B CN111705810B CN202010587381.3A CN202010587381A CN111705810B CN 111705810 B CN111705810 B CN 111705810B CN 202010587381 A CN202010587381 A CN 202010587381A CN 111705810 B CN111705810 B CN 111705810B
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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
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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Abstract
The invention discloses a deep foundation pit slope protection surface multistage supporting structure and a supporting method thereof. According to the invention, through the arrangement of the structures of the supporting ribs, the transverse ribs, the grouting bent insertion pipes and the longitudinal ribs, the connection with the slope protection surface can be realized through the supporting ribs, and the pumping of concrete slurry is realized through the grouting bent insertion pipes; through the straight intubate of the external connection slip casting with the curved intubate of slip casting, can carry out the slip casting to the deep soil of bank protection face to the improvement is strutted intensity to the bank protection face of depths.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a deep foundation pit slope protection surface multistage supporting structure and a supporting method thereof.
Background
The deep foundation pit is an engineering with the excavation depth of more than 5 meters (including 5 meters) or the excavation depth of less than 5 meters but particularly complex geological conditions, surrounding environments and underground pipelines, and the deep foundation pit support is a supporting, reinforcing and protecting measure adopted for the side wall of the deep foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.
At present common deep basal pit support mode is that the anchor pole is spouted in the grafting on deep basal pit protects domatic, then through realizing that deep basal pit protects domatic preliminary firm to spouting the anchor pole, then tie up the reinforcing bar net and tie up on exposing the anchor pole that spouts outside, thereby spout on the reinforcing bar net that protects domatic to deep basal pit and attach the concrete and play the purpose of strutting the deep basal pit, this kind of support mode, the process is complicated, influences deep basal pit slope protective surface and struts efficiency.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a deep foundation pit slope protection surface multistage supporting structure and a supporting method thereof, wherein the structure of supporting ribs, transverse ribs, grouting bent insertion pipes and longitudinal ribs is arranged, the connection with a slope protection surface can be realized through the supporting ribs, and the pumping of concrete slurry is realized through the grouting bent insertion pipes; through the straight intubate of the external connection slip casting with the curved intubate of slip casting, can carry out the slip casting to the deep soil of bank protection face to the improvement is strutted intensity to the bank protection face of depths.
The purpose of the invention can be realized by the following technical scheme:
a deep foundation pit slope protection surface multistage supporting structure comprises two transverse ribs arranged in parallel, a plurality of longitudinal ribs arranged in parallel are fixed on the outer wall of the same side of the two transverse ribs at equal intervals, the plurality of longitudinal ribs are arranged between the two transverse ribs, and a plurality of supporting ribs arranged in parallel are fixed on the outer sides of the two transverse ribs at equal intervals;
the supporting ribs comprise main rods welded and fixed with longitudinal ribs at corresponding positions, longitudinal rods perpendicular to the main rods are fixed at two ends of each main rod, transverse rods perpendicular to the longitudinal rods and on the same side as the main rods are fixed at the ends of the longitudinal rods, inserting rods perpendicular to the transverse rods are fixed at the ends of the transverse rods, and the inserting rods are inserted and fixed with the slope protection surface of the deep foundation pit;
the both ends of horizontal muscle all cup joint and are fixed with the curved intubate of slip casting, the curved intubate of slip casting includes and cup joints the side poling of fixing with the horizontal muscle tip in corresponding position, the tip vertical fixation of side poling has the vertical pipe, the bottom mounting of vertical pipe has with vertical pipe perpendicular and with the violently pipe of side poling homonymy, the end mounting of violently managing has and violently manages the vertically soil pipe of inserting, through setting up the curved intubate of slip casting and make things convenient for the slip casting.
Further, the method comprises the following steps: the soil inserting pipe and the end part of the inserting rod are provided with inclined notches, and the inclined notches are arranged to be convenient for being inserted into soil.
Further, the method comprises the following steps: the distance between two adjacent soil inserting pipes is 150cm-200cm, and the distance range can improve the strength of the slope protection surface.
Further, the method comprises the following steps: the included angle between the axis of the main rod and the projection of the axis of the cross rod on the plane where the longitudinal ribs are located is 45-60 degrees, and the support ribs and the ground are conveniently supported by setting the included angle, so that the welding efficiency between the support ribs and the longitudinal ribs is improved.
Further, the method comprises the following steps: the outer wall of the soil inserting pipe is provided with an external thread, the outer wall of the soil inserting pipe is fixedly sleeved with a grouting straight insertion pipe, the inner wall of the grouting straight insertion pipe is provided with an internal thread which is connected with the external thread in a screwing mode, and the foundation pit slope protection surface at the deep position is connected conveniently by the grouting straight insertion pipe.
Further, the method comprises the following steps: the outer wall welded fastening of slip casting straight intubate has outer flight, can improve the joint strength of slip casting straight intubate and slope protection face soil through setting up outer flight.
Further, the method comprises the following steps: a plurality of round holes are seted up to the outer wall equidistance of slip casting straight intubate, make things convenient for the concrete thick liquids to ooze.
Further, the method comprises the following steps: the inclined cut is opened to the tip outer wall of slip casting straight intubate, is convenient for peg graft the soil of injected hole bottom.
A supporting method of a deep foundation pit slope protection surface multistage supporting structure comprises the following steps:
the method comprises the following steps: excavating a construction foundation pit from a soil top layer through a construction machine, and correcting a first-level deep foundation pit slope protection surface when the construction foundation pit is excavated to a specified first-level platform depth;
step two: a shallow grouting hole is formed in the slope protection surface of the first-stage deep foundation pit;
step three: welding a corresponding supporting structure according to the position of the shallow grouting hole;
step four: aligning the grouting bent insertion pipe to the position of the shallow grouting hole, then aligning the insertion rod of the supporting structure to the slope protection surface of the first-stage deep foundation pit, and inserting the insertion rod into the soil of the slope protection surface of the first-stage deep foundation pit;
step five: then, butting grouting equipment with a longitudinal pipe, and then injecting concrete grout into the shallow grouting hole through a grouting bent insertion pipe;
step six: after the concrete slurry is initially set, spraying concrete on the slope protection surface of the first-level deep foundation pit, so that the concrete, the transverse ribs, the longitudinal ribs, the support ribs and the grouting bent insertion pipes are solidified into a whole;
step seven: excavating a foundation pit on the primary platform through a construction machine, excavating the primary platform to a specified depth of the secondary platform, and correcting a slope protection surface of the secondary deep foundation pit;
step eight: deep grouting holes are formed in the slope protection surface of the second-stage deep foundation pit;
step nine: welding a corresponding support structure according to the position of the deep grouting hole, screwing the end part of the grouting bent insertion pipe to be connected with the grouting straight insertion pipe, aligning the grouting straight insertion pipe to the position of the deep grouting hole, aligning the insertion rod of the support structure to the slope protection surface of the second-level deep foundation pit, and inserting the insertion rod into the soil of the slope protection surface of the second-level deep foundation pit;
step ten: then, butting grouting equipment with a longitudinal pipe, and then injecting concrete grout into the deep grouting hole through a grouting bent insertion pipe and a grouting straight insertion pipe;
step eleven: and after the concrete slurry is initially set, spraying concrete on the slope protection surface of the second-level deep foundation pit, so that the concrete, the transverse ribs, the longitudinal ribs, the support ribs, the grouting bent insertion pipes and the grouting straight insertion pipes are solidified into a whole to complete the support of the deep foundation pit.
The invention has the beneficial effects that:
1. the concrete grouting support is characterized in that a plurality of longitudinal bars arranged in parallel are fixed on the outer wall of the same side of two transverse bars in an equidistance manner, a plurality of support bars are fixed between the longitudinal bars and between the two transverse bars and on the outer side of the transverse bars in an equidistance manner, a main rod of each support bar is welded and fixed with the longitudinal bar at the corresponding position, longitudinal rods, transverse rods and inserted rods are sequentially fixed at two ends of the main rod to form an arch structure, grouting bent insertion pipes are sleeved and fixed at two ends of each transverse bar, side connecting pipes of the grouting bent insertion pipes are sleeved and fixed with the end parts of the transverse bars at the corresponding positions, longitudinal pipes are fixed on the side connecting pipes, transverse pipes and inserted soil pipes are sequentially fixed on the longitudinal pipes, the support bars, the transverse bars, the grouting bent insertion pipes and the longitudinal bars are arranged to realize connection with a slope protection surface through the support bars, pumping of concrete slurry is realized through the grouting bent insertion pipes, and compared with the existing grouting bolt insertion and reinforcing mesh support mode, the supporting mode realizes the fixing of the spray anchor rod and the suspension operation of the reinforcing mesh by single operation, thereby greatly accelerating the supporting efficiency of the deep foundation pit slope protection surface;
2. the external screw thread has been seted up through the outer wall of soil-inserted pipe, the internal thread of seting up through the inner wall of the straight intubate of slip casting closes soon with the external screw thread of soil-inserted pipe to be connected, the outer wall welded fastening who will slip casting straight intubate has outer flight or has seted up a plurality of round holes at the outer wall equidistance of the straight intubate of slip casting and has seted up the scarf with the tip outer wall of the straight intubate of slip casting, through the straight intubate of external connection slip casting with the curved intubate of slip casting, can carry out the slip casting to the deep soil of bank protection face, thereby improve the bank protection face support intensity to the depths.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a multi-stage supporting structure of the present invention;
FIG. 2 is a schematic structural view of a grouting bent cannula according to the invention;
FIG. 3 is a schematic structural view of a support rib according to the present invention;
fig. 4 is a schematic structural view showing another state of the multi-stage supporting structure of the present invention;
fig. 5 is a structural schematic diagram of a grouting straight insertion pipe in the invention.
In the figure: 1. transverse ribs; 2. longitudinal ribs; 3. supporting ribs; 31. inserting a rod; 32. a cross bar; 33. a longitudinal bar; 34. a main rod; 4. grouting and bending the insertion pipe; 41. an external thread; 42. inserting a soil pipe; 43. a transverse tube; 44. a longitudinal tube; 45. a lateral connecting pipe; 5. grouting and straight inserting pipes; 51. an internal thread; 52. an outer helical fin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a deep foundation pit slope protection surface multistage supporting structure comprises two transverse ribs 1 which are arranged in parallel, a plurality of longitudinal ribs 2 which are arranged in parallel are fixed on the outer wall of the same side of the two transverse ribs 1 at equal intervals, a plurality of support ribs 3 which are arranged in parallel are arranged between the two transverse ribs 1 at equal intervals, and are fixed on the outer sides of the two transverse ribs 1 at equal intervals;
the supporting ribs 3 comprise main rods 34 fixed with the longitudinal ribs 2 at corresponding positions in a welded mode, longitudinal rods 33 perpendicular to the main rods 34 are fixed at two ends of the main rods 34, transverse rods 32 perpendicular to the longitudinal rods 33 and on the same side as the main rods 34 are fixed at the end portions of the longitudinal rods 33, inserting rods 31 perpendicular to the transverse rods 32 are fixed at the end portions of the transverse rods 32, and the inserting rods 31 are used for being fixedly connected with the slope protection surface of the deep foundation pit in an inserted mode;
the both ends of horizontal muscle 1 all cup joint and are fixed with the curved intubate 4 of slip casting, the curved intubate 4 of slip casting include with the horizontal muscle 1 tip of corresponding position cup joint fixed side connecting pipe 45, the tip vertical fixation of side connecting pipe 45 has vertical pipe 44, vertical pipe 44's bottom mounting have with vertical pipe 44 perpendicular and with the side connecting pipe 45 homonymy violently manage 43, the end mounting of violently managing 43 have with violently manage 43 vertically insert native pipe 42, through setting up the curved intubate 4 of slip casting and make things convenient for the slip casting.
The oblique cuts are formed in the end portions of the soil inserting pipes 42 and the end portions of the inserting rods 31, the oblique cuts are formed to be convenient to insert with soil, the distance between every two adjacent soil inserting pipes 42 is 150cm-200cm, the strength of the protecting surface can be improved within the distance range, included angles of the axis of the main rod 34 and the axis of the cross rod 32 in projection on the plane where the longitudinal ribs 2 are located are 45-60 degrees, supporting ribs 3 are convenient to support with the ground through setting of the included angles, and therefore welding efficiency between the supporting ribs 3 and the longitudinal ribs 2 is improved.
The external screw thread 41 has been seted up to the outer wall of intubate 42, the outer wall of intubate 42 cup joints and is fixed with the straight intubate 5 of slip casting, the internal thread 51 of being connected with external screw thread 41 soon is seted up to the inner wall of the straight intubate 5 of slip casting, it is convenient for protect domatic to be connected the foundation ditch of deep position through setting up the straight intubate 5 of slip casting, the outer wall welded fastening of the straight intubate 5 of slip casting has outer flight 52, can improve the straight intubate 5 of slip casting and protect the joint strength of domatic soil through setting up outer flight 52.
A plurality of round holes have been seted up to the outer wall equidistance of the straight intubate of slip casting 5, make things convenient for the concrete thick liquids to ooze, and the chamfer mouth has been seted up to the tip outer wall of the straight intubate of slip casting 5, is convenient for peg graft the soil of slip casting hole bottom.
A supporting method of a deep foundation pit slope protection surface multistage supporting structure comprises the following steps:
the method comprises the following steps: excavating a construction foundation pit from a soil top layer through a construction machine, and correcting a first-level deep foundation pit slope protection surface when the construction foundation pit is excavated to a specified first-level platform depth;
step two: a shallow grouting hole is formed in the slope protection surface of the first-stage deep foundation pit;
step three: welding a corresponding supporting structure according to the position of the shallow grouting hole;
step four: aligning the grouting bent insertion pipe 4 to the position of the shallow grouting hole, then aligning the insertion rod 31 of the supporting structure to the slope protection surface of the first-stage deep foundation pit, and inserting the insertion rod 31 into the soil of the slope protection surface of the first-stage deep foundation pit;
step five: then, the grouting equipment is butted with the longitudinal pipe 44, and concrete grout is injected into the shallow grouting hole through the grouting bent insertion pipe 4;
step six: after the concrete slurry is initially set, spraying concrete on the slope protection surface of the first-level deep foundation pit, so that the concrete, the transverse ribs 1, the longitudinal ribs 2, the support ribs 3 and the grouting bent insertion pipes 4 are solidified into a whole;
step seven: excavating a foundation pit on the primary platform through a construction machine, excavating the primary platform to a specified depth of the secondary platform, and correcting a slope protection surface of the secondary deep foundation pit;
step eight: deep grouting holes are formed in the slope protection surface of the second-stage deep foundation pit;
step nine: welding a corresponding supporting structure according to the position of a deep grouting hole, screwing the end part of a grouting bent insertion pipe 4 to be connected with a grouting straight insertion pipe 5, aligning the grouting straight insertion pipe 5 to the position of the deep grouting hole, aligning an insertion rod 31 of the supporting structure to the slope protection surface of the second-level deep foundation pit, and inserting the insertion rod 31 into the slope protection surface soil of the second-level deep foundation pit;
step ten: then, the grouting equipment is butted with the longitudinal pipe 44, and concrete grout is injected into the deep grouting hole through the grouting bent insertion pipe 4 and the grouting straight insertion pipe 5;
step eleven: and after the concrete slurry is initially set, spraying concrete on the slope protection surface of the second-level deep foundation pit, so that the concrete, the transverse ribs 1, the longitudinal ribs 2, the support ribs 3, the grouting bent insertion pipes 4 and the grouting straight insertion pipes 5 are solidified into a whole to complete the support of the deep foundation pit.
A plurality of longitudinal bars 2 which are arranged in parallel are fixed on the outer wall of the same side of two transverse bars 1 which are arranged in parallel at equal intervals, then a plurality of support bars 3 are fixed between the plurality of longitudinal bars 2 between the two transverse bars 1 and on the outer side of the transverse bars 1 at equal intervals, a main bar 34 of each support bar 3 is welded and fixed with the longitudinal bar 2 at the corresponding position, a longitudinal bar 33, a transverse bar 32 and an inserted bar 31 are sequentially fixed at the two ends of the main bar 34 to form an arch structure, then grouting bent insertion pipes 4 are sleeved and fixed at the two ends of each transverse bar 1, a lateral connecting pipe 45 of each grouting bent insertion pipe 4 is sleeved and fixed with the end part of the corresponding transverse bar 1, a longitudinal pipe 44 is fixed on the lateral connecting pipe 45, a transverse pipe 43 and an earth inserting pipe 42 are sequentially fixed on the longitudinal pipe 44, the connection with a slope protection surface can be realized through the support bars 3 by arranging the structures of the support bars 3, the transverse bars 1, the grouting bent insertion pipes 4 and the longitudinal bars 2, the concrete slurry can be pumped and inserted pipes can be realized through the grouting bent insertion pipes, compared with the existing spray anchor rod inserting and reinforcing mesh supporting mode, the supporting mode realizes the fixation of the spray anchor rod and the suspension operation of the reinforcing mesh by single operation, thereby greatly accelerating the supporting efficiency of the deep foundation pit slope protection surface;
The working principle is as follows: when the construction foundation pit is used, a construction foundation pit is excavated from a soil top layer through a construction machine, when the construction foundation pit is excavated to the depth of a specified first-level platform, a first-level deep foundation pit slope protection surface is corrected, a shallow grouting hole is formed in the first-level deep foundation pit slope protection surface, a corresponding supporting structure is welded according to the position of the shallow grouting hole, a grouting bent insertion pipe 4 is aligned to the position of the shallow grouting hole, an insertion rod 31 of the supporting structure is aligned to the first-level deep foundation pit slope protection surface, the insertion rod 31 is inserted into soil of the first-level deep foundation pit slope protection surface, a grouting device is butted with a longitudinal pipe 44, concrete grout is injected into the shallow grouting hole through the grouting bent insertion pipe 4, and after the concrete grout is initially set, concrete is sprayed onto the first-level deep foundation pit slope protection surface, so that the concrete, a transverse rib 1, a longitudinal rib 2, a support rib 3 and the grouting bent insertion pipe 4 are set into a whole;
then, a foundation pit is excavated on a first-stage platform through a construction machine, the first-stage platform is excavated to a specified depth of a second-stage platform, a slope protection surface of the second-stage deep foundation pit is corrected, a deep grouting hole is formed in the slope protection surface of the second-stage deep foundation pit, a corresponding support structure is welded according to the position of the deep grouting hole, the end part of a grouting bent insertion pipe 4 is screwed and connected with a grouting straight insertion pipe 5, the grouting straight insertion pipe 5 is aligned with the deep grouting hole, an insertion rod 31 of the support structure is aligned with the slope protection surface of the second-stage deep foundation pit, the insertion rod 31 is inserted into soil of the slope protection surface of the second-stage deep foundation pit, a grouting device is butted with a longitudinal pipe 44, concrete grout is injected into the deep grouting hole through the grouting bent insertion pipe 4 and the grouting straight insertion pipe 5, and after the concrete grout is initially set, concrete is sprayed onto the slope protection surface of the second-stage deep foundation pit, and accordingly, the concrete is adhered to a transverse rib 1, a longitudinal rib 2, a support rib 3, a lateral rib 3 and a lateral rib, The grouting bent insertion pipe 4 and the grouting straight insertion pipe 5 are solidified into a whole so as to complete the support of the deep foundation pit.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (9)
1. The deep foundation pit slope protection surface multistage supporting structure is characterized by comprising two transverse ribs (1) which are arranged in parallel, wherein a plurality of longitudinal ribs (2) which are arranged in parallel are fixed on the outer wall of the same side of the two transverse ribs (1) at equal intervals, and a plurality of supporting ribs (3) which are arranged in parallel are fixed on the outer sides of the two longitudinal ribs (2) between the two transverse ribs (1) and at equal intervals;
the supporting ribs (3) comprise main rods (34) welded and fixed with the longitudinal ribs (2) at corresponding positions, longitudinal rods (33) perpendicular to the main rods (34) are fixed at two ends of each main rod (34), transverse rods (32) perpendicular to the longitudinal rods (33) and on the same side as the main rods (34) are fixed at the ends of the longitudinal rods (33), and inserting rods (31) perpendicular to the transverse rods (32) are fixed at the ends of the transverse rods (32);
the both ends of horizontal muscle (1) all cup joint and are fixed with the curved intubate of slip casting (4), the curved intubate of slip casting (4) include with correspond the horizontal muscle (1) tip of position and cup joint fixed side connecting pipe (45), the tip vertical fixation of side connecting pipe (45) has vertical pipe (44), the bottom mounting of vertical pipe (44) has violently manage (43) perpendicular with vertical pipe (44) and with the side connecting pipe (45) homonymy, the end mounting of violently managing (43) has with violently manage (43) vertically soil insertion pipe (42).
2. The deep foundation pit slope protection surface multistage supporting structure as claimed in claim 1, wherein the ends of the soil insertion pipe (42) and the insertion rod (31) are provided with oblique notches.
3. The deep foundation pit slope protection surface multistage supporting structure as claimed in claim 1, wherein the distance between two adjacent soil inserting pipes (42) is 150cm-200 cm.
4. The deep foundation pit slope protecting surface multistage supporting structure according to claim 1, wherein the included angle between the axis of the main rod (34) and the projection of the axis of the cross rod (32) on the plane where the plurality of longitudinal ribs (2) are located is 45-60 degrees.
5. The multistage supporting structure of the deep foundation pit slope protection surface according to claim 1, wherein the outer wall of the soil insertion pipe (42) is provided with an external thread (41), the outer wall of the soil insertion pipe (42) is fixedly sleeved with a grouting straight insertion pipe (5), and the inner wall of the grouting straight insertion pipe (5) is provided with an internal thread (51) screwed with the external thread (41) for connection.
6. The deep foundation pit slope protection surface multistage supporting structure as claimed in claim 5, wherein the outer wall of the grouting straight insertion pipe (5) is welded and fixed with an outer spiral sheet (52).
7. The deep foundation pit slope protection surface multistage supporting structure as claimed in claim 5, wherein the outer wall of the grouting straight insertion pipe (5) is provided with a plurality of round holes at equal intervals.
8. The deep foundation pit slope protection surface multistage supporting structure as claimed in claim 5, wherein the outer wall of the end part of the grouting straight insertion pipe (5) is provided with a bevel cut.
9. The supporting method of the deep foundation pit slope protection surface multistage supporting structure according to claim 1, characterized in that the supporting method of the multistage supporting structure comprises the following steps:
the method comprises the following steps: excavating a construction foundation pit from a soil top layer through a construction machine, and correcting a first-level deep foundation pit slope protection surface when the construction foundation pit is excavated to a specified first-level platform depth;
step two: a shallow grouting hole is formed in the slope protection surface of the first-stage deep foundation pit;
step three: welding a corresponding supporting structure according to the position of the shallow grouting hole;
step four: aligning the grouting bent insertion pipe (4) to the position of the shallow grouting hole, then aligning the insertion rod (31) of the supporting structure to the first-stage deep foundation pit slope surface, and inserting the insertion rod (31) into the soil of the first-stage deep foundation pit slope surface;
step five: then, the grouting equipment is butted with the longitudinal pipe (44), and concrete grout is injected into the shallow grouting hole through the grouting bent insertion pipe (4);
step six: after the concrete slurry is initially set, spraying concrete on the slope protection surface of the first-level deep foundation pit, so that the concrete, the transverse ribs (1), the longitudinal ribs (2), the support ribs (3) and the grouting bent insertion pipe (4) are solidified into a whole;
step seven: excavating a foundation pit on the primary platform through a construction machine, excavating the primary platform to a specified depth of the secondary platform, and correcting a slope protection surface of the secondary deep foundation pit;
step eight: deep grouting holes are formed in the slope protection surface of the second-stage deep foundation pit;
step nine: welding a corresponding supporting structure according to the position of a deep grouting hole, screwing the end part of a grouting bent insertion pipe (4) to be connected with a grouting straight insertion pipe (5), aligning the grouting straight insertion pipe (5) to the position of the deep grouting hole, aligning an insertion rod (31) of the supporting structure to the slope protection surface of the second-level deep foundation pit, and inserting the insertion rod (31) into the soil of the slope protection surface of the second-level deep foundation pit;
step ten: then, the grouting equipment is butted with the longitudinal pipe (44), and concrete grout is injected into the deep grouting hole through the grouting bent insertion pipe (4) and the grouting straight insertion pipe (5);
step eleven: and after the concrete slurry is initially set, spraying concrete on the slope protection surface of the second-level deep foundation pit, so that the concrete, the transverse ribs (1), the longitudinal ribs (2), the support ribs (3), the grouting bent insertion pipes (4) and the grouting straight insertion pipes (5) are solidified into a whole to complete the support of the deep foundation pit.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100044410A (en) * | 2008-10-22 | 2010-04-30 | 정재천 | Retaining wall applied by method soil-nailing construction |
| CN103147442A (en) * | 2013-03-14 | 2013-06-12 | 中国华冶科工集团有限公司 | Ultra-deep foundation pit press-grouting pile and prestressed anchor combined supporting construction method |
| CN107119682A (en) * | 2017-04-25 | 2017-09-01 | 温州鸿越建设工程有限公司 | A kind of soil nail wall and its construction method |
| CN207032257U (en) * | 2017-07-28 | 2018-02-23 | 江苏华都建设有限公司 | A kind of foundation pit slope protection structure |
| CN108999196A (en) * | 2018-08-15 | 2018-12-14 | 北京市政建设集团有限责任公司 | In-network processing construction method for supporting between a kind of stake |
-
2020
- 2020-06-24 CN CN202010587381.3A patent/CN111705810B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100044410A (en) * | 2008-10-22 | 2010-04-30 | 정재천 | Retaining wall applied by method soil-nailing construction |
| CN103147442A (en) * | 2013-03-14 | 2013-06-12 | 中国华冶科工集团有限公司 | Ultra-deep foundation pit press-grouting pile and prestressed anchor combined supporting construction method |
| CN107119682A (en) * | 2017-04-25 | 2017-09-01 | 温州鸿越建设工程有限公司 | A kind of soil nail wall and its construction method |
| CN207032257U (en) * | 2017-07-28 | 2018-02-23 | 江苏华都建设有限公司 | A kind of foundation pit slope protection structure |
| CN108999196A (en) * | 2018-08-15 | 2018-12-14 | 北京市政建设集团有限责任公司 | In-network processing construction method for supporting between a kind of stake |
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| CN111705810A (en) | 2020-09-25 |
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