CN112412472B - Pipe-jacking working well wall reverse-acting system in soft soil area and construction method and application thereof - Google Patents
Pipe-jacking working well wall reverse-acting system in soft soil area and construction method and application thereof Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 74
- 239000002689 soil Substances 0.000 title claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 238000009415 formwork Methods 0.000 claims abstract description 33
- 230000002787 reinforcement Effects 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000009966 trimming Methods 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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Abstract
The invention provides a pipe jacking working well wall reverse-working system in a soft soil area and a construction method and application thereof, wherein the pipe jacking working well wall reverse-working system in the soft soil area comprises an annular guide wall arranged on the periphery of a pipe jacking working well, a water-stop curtain, a rigid-flexible combined pile at the bottom, a connecting ring beam, a well wall reinforcement cage and an inner wall formwork, and the construction steps comprise (1) constructing the annular guide wall → (2) constructing the water-stop curtain → (3) constructing the rigid-flexible combined pile at the bottom (including insertion of H-shaped steel) → (4) constructing the connecting ring beam → (5) digging core soil → (6) binding and welding the well wall cage → (7) hanging the inner wall formwork → (8) pouring the well wall concrete, removing the inner wall formwork after the concrete is hardened to a certain degree, completing construction of a part of the well wall, preparing adjacent parts of the lower part of the well wall → (9) and repeating the steps (5) - (8) until completing the construction of the working well wall reverse-working well wall construction, and the whole has good impermeability, large rigidity, simple and short construction period and short construction effect.
Description
Technical Field
The invention relates to the technical field of pipe-jacking working well construction, in particular to a pipe wall reverse system of a pipe-jacking working well in a soft soil area, a construction method and application thereof.
Background
The pipe-jacking construction technology is a construction method of underground pipelines developed after a shield construction technology, and is widely used for trenchless laying of various pipelines such as urban underground water supply and drainage pipelines, natural gas and petroleum pipelines, communication cables and the like. By adopting the technology for construction, a large amount of expropriated land removal cost can be saved, the environmental pollution and the road blockage can be reduced, and the economic benefit and the social benefit are remarkable. In the pipe-jacking construction technology, the construction of a working well is an essential link, and the process directly influences the progress and the cost of the whole construction project.
The traditional working well construction usually adopts a sinking well method and a reverse method. The open caisson method is characterized in that soil is dug in a well, the soil is sunk to a designed elevation after overcoming the frictional resistance of the well wall by means of the gravity of the open caisson method, but the method has high requirements on construction technology, the construction period is long, and the problems of inclined open caisson or difficult sinking and the like caused by sand running are easy to occur in construction. The reverse construction method is that when the underground structure is constructed, temporary supports are not erected on an excavated soil pit, a mechanism is used as a retaining wall and is used as a support, and a construction method of excavating and constructing the structure sequentially from top to bottom is adopted.
Therefore, a reverse system and a construction method for the wall of the pipe-jacking working well in the soft soil area are urgently needed, wherein the reverse system and the construction method are good in structural impermeability, high in rigidity, simple in structure, simple and convenient to construct and short in construction period.
Disclosure of Invention
The invention aims to provide a pipe jacking working well wall reverse-acting system in a soft soil area, which has the advantages of good structure impermeability, high rigidity, simple structure, simple and convenient construction and short construction period, a construction method and application thereof.
To achieve the above object, the present solution provides: a construction method of a pipe-jacking working well wall reverse system in a soft soil area comprises the following steps:
1) Constructing the annular guide wall (1): firstly, excavating the peripheral position of a pre-construction working well to form an annular ring pit, and pouring concrete in the annular ring pit to form an annular guide wall (1);
2) Construction waterproof curtain (2): constructing a circle of continuous stirring piles which are mutually lapped to form a waterproof curtain (2) between the annular guide wall (1) and the wall of the pre-construction working well;
3) Constructing a rigid-flexible combined pile (3) at the bottom: firstly, constructing a large-diameter stirring pile (11) at the bottom of a well wall of a pre-constructed working well, and then vertically inserting H-shaped steel (7) into the large-diameter stirring pile (11) to form a rigid-flexible combined pile (3) at the bottom;
4) Constructing a connecting ring beam (4): binding a circle of reinforcement of the connecting ring beam (4) at the top of the wall of the pre-constructed working well, and fixing the connecting ring beam (4) and the H-shaped steel (7);
5) Digging a well core soil body: excavating a pre-construction working well from top to bottom in sections;
6) Binding and welding a well wall reinforcement cage (5): manufacturing a prefabricated well wall reinforcement cage (5) of a binding unit in advance, immediately lapping and fixing the well wall reinforcement cage (5) after the manual trimming of earthwork excavation is finished, and lapping and fixing the well wall reinforcement cage (5) on two sides of the H-shaped steel (7) and on the lower part of the tie ring beam (4);
7) Hanging an inner wall template (6): the inner wall formworks (6) are bolted and fixed through formwork hanging ribs (10) on the H-shaped steel (7), adhesive tape sealing is done at gaps between the inner wall formworks (6), and a pouring opening (15) for concrete is arranged at the upper end of the inner wall formwork (6);
8) Pouring concrete: feeding concrete into a pouring gate (15) on an inner wall template (6) downwards, ramming the concrete symmetrically in layers, manually ramming, removing the inner wall template (6) after the concrete is hardened to a certain degree, completing construction of a part of well wall, and preparing construction of an adjacent part of the lower well wall;
9) And repeating the steps 5) to 8) until the reverse construction of the wall of the pipe-jacking working well is completed.
In a second aspect, the scheme provides a pipe-jacking working well wall in the soft soil area, and the pipe-jacking working well wall is obtained by construction according to the construction method of the pipe-jacking working well wall reverse system in the soft soil area.
The third aspect provides a pipe-jacking working well wall reverse-acting system in a soft soil area, which comprises an annular guide wall (1) arranged on the periphery of the pipe-jacking working well, a waterproof curtain (2), bottom rigid-flexible combined piles (3), a connecting ring beam (4), a well wall reinforcement cage (5) and an inner wall template (6); the bottom of the wall of a pipe working well is arranged in to bottom rigid-flexible composite pile (3), water-stop curtain (2) is arranged on the outer side of bottom rigid-flexible composite pile (3), annular guide wall (1) is arranged on the outer side of water-stop curtain (2) and tangent to the outer wall of water-stop curtain (2), wherein bottom rigid-flexible composite pile (3) comprises large-diameter stirring pile (11) arranged at the bottom of the wall of the pipe working well and H-shaped steel (7) inserted in large-diameter stirring pile (11), connecting ring beam (4) is arranged on the top of the pipe working well and tangent to the inner wall of water-stop curtain (2), the lower part of connecting ring beam (4) is connected with H-shaped steel (7), wall reinforcement cage (5) is lapped on two sides of H-shaped steel (7), inner wall formwork (6) is fixed through formwork hanging ribs (10) on H-shaped steel (7), and pouring port (15) of concrete is arranged at the upper end of inner wall formwork (6).
Compared with the prior art, the technical scheme has the following characteristics and beneficial effects:
compared with the prior art, the pipe jacking working well wall reverse construction system structure in the soft soil area, which is composed of the annular guide wall, the waterproof curtain, the rigid-flexible combined pile at the bottom, the connecting ring beam, the well wall reinforcement cage and the inner wall template, has the advantages of good impermeability, high rigidity, simple structure, simplicity and convenience in construction, short construction period and the like, and has obvious technical advantages.
The bottom rigid-flexible combined pile formed by the H-shaped steel and the large-diameter stirring pile provides a stable foundation for the working well, and the H-shaped steel plays a role in mutual connection in a well wall structure, so that the rigidity and integrity of the whole working well are effectively improved.
The unit prefabricated well wall reinforcement cage adopted by the invention can be quickly lapped, welded and fixed with the well wall reinforcement connecting ribs on the H-shaped steel in the well, and forms a closed-loop well wall reinforcement cage together with the H-shaped steel, so that the reinforcement cage does not need to be positioned when concrete is poured, the working efficiency is effectively improved, the construction period is saved, and the economic benefit is obvious.
The inner wall template provided by the invention is installed by adopting the unit combined steel template through bolting, a supporting structure is not required to be arranged on the outer side of the inner wall template, the limited construction space in the well is not occupied, and the technical advantage is obvious.
Drawings
FIG. 1 is a schematic diagram of a pipe jacking working well wall reverse system in a soft soil area;
FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of a bottom rigid-flexible composite pile;
FIG. 4 is a plan view of the H-shaped steel;
FIG. 5 is a distribution diagram of a bottom rigid-flexible composite pile;
FIG. 6 is a perspective view of an inner wall form unit;
FIG. 7 is a schematic view of an inner wall form unit connection;
fig. 8 is a schematic view of the placement of the pouring gate;
fig. 9 is a detail plan view of the pouring gate;
FIG. 10 is a schematic perspective view of a closure panel;
fig. 11 is a schematic view of a closed state of a pouring gate.
Wherein: 1-annular guide wall; 2-waterproof curtain; 3-bottom rigid-flexible combined pile; 4-connecting the ring beam; 5-well wall reinforcement cage; 6-inner wall form; 7-H section steel; 8-well wall steel bar connecting bar; 9-ring beam connecting rib; 10-hanging ribs on the template; 11-large diameter mixing pile; 12-screw thread; 13-tongue and groove; 14-hanging rib holes; 15-pouring gate; 16-fixed ear plate; 17-sealing rubber ring; 18-hinge bolt; 19-hinged ear plate; 20-a closing plate; 21-fixed bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning "at least one" or "one or more," i.e., that a quantity of one element may be one in one embodiment, while a quantity of another element may be plural in other embodiments, and the terms "a" and "an" should not be interpreted as limiting the quantity.
The technical solution of the present invention is further explained with reference to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11.
According to the first aspect of the scheme, the pipe jacking working well wall reverse-acting system for the soft soil area is provided, the pipe jacking working well is constructed by utilizing a reverse-acting method, and comprises an annular guide wall (1) arranged on the periphery of the pipe jacking working well, a waterproof curtain (2), a rigid-flexible combined pile (3) at the bottom, a connecting ring beam (4), a well wall reinforcement cage (5) and an inner wall template (6); the bottom of the wall of a well of a jacking pipe working well is arranged in rigid-flexible combined pile (3) in the bottom, water-stop curtain (2) is arranged on the outer side of rigid-flexible combined pile (3) in the bottom, annular guide wall (1) is arranged on the outer side of water-stop curtain (2) and is tangent to the outer wall of water-stop curtain (2), wherein the rigid-flexible combined pile (3) in the bottom comprises large-diameter stirring pile (11) arranged at the bottom of the wall of the jacking pipe working well and H-shaped steel (7) inserted into large-diameter stirring pile (11), connecting ring beam (4) is arranged at the top of the jacking pipe working well and is tangent to the inner wall of water-stop curtain (2), the lower part of connecting ring beam (4) is connected with H-shaped steel (7), steel cage (5) is lapped on two sides of H-shaped steel (7), and inner wall formwork (6) is fixed through formwork hanging ribs (10) on H-shaped steel (7).
Specifically, as shown in fig. 2, the connecting ring beam (4) is arranged at the top of the pipe jacking working well and is tangent to the inner wall of the waterproof curtain (2), the annular guide wall (1) is tangent to the outer wall of the waterproof curtain (2), and the height of the annular guide wall (1) is consistent with that of the connecting ring beam (4), so that the connecting ring beam can be conveniently used as a construction operation platform for construction of operators.
The waterproof curtain (2) is tangent to the outer wall of the jacking pipe working well, the waterproof curtain (2) is flush with the top of the jacking pipe working well, and the depth of the waterproof curtain (2) exceeds the depth of the jacking pipe working well. In the embodiment of the scheme, the waterproof curtain (2) is formed by overlapping continuous stirring piles. Specifically, continuous stirring piles are mutually overlapped to form an annular waterproof curtain (2) surrounding the outer wall of the pipe-jacking working well, and the stirring piles are selected from cement soil stirring piles.
The bottom rigid-flexible combined pile (3) is arranged on the inner side of the waterproof curtain (2) and is arranged on the lower portion of the connecting ring beam (4), the large-diameter stirring piles (11) are arranged at the bottom of the wall of the pipe-jacking working well at intervals, the H-shaped steel (7) is vertically inserted into the large-diameter stirring piles (11), the top of the H-shaped steel (7) is connected with the bottom of the connecting ring beam (4), and the bottom rigid-flexible combined pile (3) is used as the foundation of the pipe-jacking working well.
The connecting ring beam (4) is flush with the waterproof curtain (2) in height, and the lower part of the connecting ring beam is connected with the H-shaped steel (7) through a ring beam connecting rib (9). Specifically, the top of the H-shaped steel (7) is provided with a ring beam connecting rib (9), and the lower part of the connecting ring beam (4) is bound with the ring beam connecting rib (9) and then fixed by concrete pouring.
H shaped steel (7) divide into lower part H shaped steel and upper portion H shaped steel, lower part H shaped steel is inserted and is established in major diameter stirring stake (11), upper portion H shaped steel extends to pipe jacking working well's linking girt (4) department, H shaped steel (7) upper portion extending part's both sides set up wall of a well reinforcing bar (8), it hangs muscle (10) to set up the template towards the edge of a wing department of the inside one side of wall of a well, the top sets up girt connecting bar (9), wall of a well reinforcing bar connecting bar (8) are located linking girt (4) bottom, wall of a well reinforcing bar cage (5) are through wall of a well reinforcing bar connecting bar (8) welded fastening in linking the lower part and H shaped steel (7) both sides of girt (4).
Wherein, the end part of the template hanging rib (10) is provided with a thread (12).
And, wall of a well steel reinforcement cage (5) belong to the unit prefabricated formula, and wall of a well steel reinforcement cage (5) are the circular arc piece around putting in the both sides of H shaped steel (7), and adjacent wall of a well steel reinforcement cage (5) will overlap joint each other from top to bottom and welded fastening, and both sides welded fastening is on wall of a well steel reinforcement connecting rib (8) of H shaped steel (7).
The inner wall template (6) is a unit combined type steel template and is bolted and fixed through template hanging ribs (10) on the H-shaped steel (7), so that a supporting structure is not required to be arranged on the outer side of the inner wall template, and the upper end of the inner wall template (6) is lapped on the connecting ring beam (4).
The inner wall formwork (6) of each unit is of a curve shape, two sides of the inner wall formwork (6) are provided with a rib hanging hole (14), four sides of the inner wall formwork are provided with tongue-and-grooves (13) convenient to install, and the upper end of the inner wall formwork (6) is provided with a concrete pouring opening (15). The inner wall template (6) is formed by assembling a plurality of inner wall template units, and adhesive tape sealing is made at the gap.
Specifically, the pouring opening (15) is of a square cross-section structure, sealing rubber rings (17) are arranged on the periphery of the pouring opening (15), and a closing plate (20) matched with the pouring opening (15) in size is movably arranged on the inner wall formwork (6).
A sealing rubber ring (17) is also arranged around the sealing plate (20), a hinged lug plate (19) fixed on the inner wall template (6) is arranged at the lower end of the sealing plate (20), and a fixed lug plate (16) is arranged at the upper end of the sealing plate (20); correspondingly, the inner wall template (6) below the pouring gate (15) is provided with a hinged lug plate (19), the inner wall template (6) above the pouring gate (15) is provided with a fixed lug plate (16), the lower end of the closing plate (20) is movably connected onto the inner wall template (6) through a hinged bolt (18), and the upper end of the closing plate (20) can be fixedly matched with the inner wall template (6) through a fixed bolt (21) so as to play a role in closing the pouring gate (15).
According to a second aspect of the scheme, the construction method of the pipe-jacking working well wall reverse-acting system in the soft soil area is used for reversely acting the pipe-jacking working well wall, and comprises the following steps:
1) Constructing the annular guide wall (1): firstly, an annular ring pit is formed by excavating at the outermost periphery of a pre-constructed working well, and concrete is poured into the annular ring pit to form an annular guide wall (1).
2) Construction waterproof curtain (2): constructing a circle of continuous stirring piles which are mutually lapped between the annular guide wall (1) and the wall of the pre-construction working well to form a waterproof curtain (2);
specifically, pile position lofting of the cement soil mixing pile is carried out between the annular guide wall (1) and the wall of the pre-construction working well, then a drilling machine is used for drilling the pile position of the soil mixing pile to the designed depth, a high-pressure grouting pump is opened, cement slurry is sprayed to the ground surface to form the cement soil mixing pile at the position corresponding to the pile position of the soil mixing pile, next adjacent piles are constructed until a circle of continuous mixing piles which are mutually lapped are formed, and the continuous mixing piles are cement soil mixing piles.
3) Constructing a rigid-flexible combined pile (3) at the bottom: the construction of the large-diameter mixing pile (11) is firstly carried out at the bottom of the wall of the pre-constructed working well, and then the H-shaped steel (7) is vertically inserted into the large-diameter mixing pile (11) to form the rigid-flexible combined pile (3) at the bottom.
4) Constructing a connecting ring beam (4): binding a circle of reinforcement of the connecting ring beam (4) at the top of the wall of the pre-constructed working well, and fixing the connecting ring beam (4) and the H-shaped steel (7);
specifically, the lower reinforcing bars of the connecting ring beam (4) and the ring beam connecting bars (9) at the top of the H-shaped steel (7) are tied together, then concrete is poured to enable the connecting ring beam (4) to be connected with the H-shaped steel (7), and finally well-wall steel bar connecting bars (8) are arranged at the bottom of the connecting ring beam (4).
5) Digging a well core soil body: because the working well is deep, the excavation is performed from top to bottom in sections, when an excavator is used for excavating earthwork, the central range of a foundation pit is excavated firstly, then peripheral soil is symmetrically excavated, and finally, the excavation and the trimming of the protecting wall range are manually performed.
6) Binding and welding a well wall reinforcement cage (5): a prefabricated well wall reinforcement cage (5) with binding units is manufactured in advance, an underground welding and lapping construction method is adopted, after the manual trimming of the earth excavation is finished, the well wall reinforcement cage (5) is immediately lapped and welded and fixed, and the well wall reinforcement cage (5) is lapped on two sides of H-shaped steel (7) and is located on the lower portion of a connecting ring beam (4).
7) Hanging an inner wall template (6): the inner wall formwork (6) is formed by assembling steel dies and is bolted and fixed through formwork hanging ribs (10) on the H-shaped steel (7), the inner wall formwork (6) is formed by assembling a plurality of inner wall formwork units, adhesive tape sealing is done at gaps, a supporting structure does not need to be arranged on the outer side of the inner wall formwork, and a pouring opening (15) for concrete is arranged at the upper end of the inner wall formwork (6).
8) Pouring concrete: commercial concrete is adopted, the concrete is fed into a pouring gate (15) on an inner wall template (6) by utilizing a guide groove, and the concrete is tamped in a layered and symmetrical mode and is tamped manually. And (4) removing the inner wall template (6) after the concrete is hardened to a certain degree, completing the construction of a part of well wall, and preparing the construction of the adjacent part of the well wall at the lower part.
9) And repeating the steps 5) to 8) until the reverse construction of the wall of the pipe-jacking working well is completed.
The structure of the pipe-jacking working well wall reverse system in the soft soil area in the construction method of the pipe-jacking working well wall reverse system in the soft soil area is described above.
According to a third aspect of the scheme, the pipe jacking working well wall in the soft soil area is obtained by construction according to the construction method of the pipe jacking working well wall reverse system in the soft soil area.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. A construction method of a pipe-jacking working well wall reverse system in a soft soil area is characterized by comprising the following steps:
1) Constructing the annular guide wall (1): firstly, excavating a peripheral position of a pre-constructed working well to form an annular ring pit, and pouring concrete in the annular ring pit to form an annular guide wall (1);
2) Construction waterproof curtain (2): constructing a circle of continuous stirring piles which are mutually lapped between the annular guide wall (1) and the wall of the pre-construction working well to form a waterproof curtain (2);
3) Constructing a rigid-flexible combined pile (3) at the bottom: firstly, constructing a large-diameter stirring pile (11) at the bottom of a well wall of a pre-constructed working well, and then vertically inserting H-shaped steel (7) into the large-diameter stirring pile (11) to form a rigid-flexible combined pile (3) at the bottom;
4) Constructing a connecting ring beam (4): binding a circle of reinforcement of the connecting ring beam (4) at the top of the wall of the pre-constructed working well, and fixing the connecting ring beam (4) and the H-shaped steel (7);
5) Digging a well core soil body: excavating a pre-construction working well from top to bottom in sections;
6) Binding and welding a well wall reinforcement cage (5): manufacturing a prefabricated well wall reinforcement cage (5) of a binding unit in advance, immediately lapping and fixing the well wall reinforcement cage (5) after the manual trimming of earthwork excavation is finished, and lapping and fixing the well wall reinforcement cage (5) on two sides of the H-shaped steel (7) and on the lower part of the tie ring beam (4);
7) Hanging an inner wall template (6): the inner wall formworks (6) are bolted and fixed through formwork hanging ribs (10) on the H-shaped steel (7), adhesive tape sealing is made at gaps among the inner wall formworks (6), and a pouring opening (15) for concrete is arranged at the upper end of each inner wall formwork (6);
8) Pouring concrete: feeding concrete into a pouring opening (15) in an inner wall template (6), ramming the concrete layer by layer symmetrically, tamping manually, removing the inner wall template (6) after the concrete is hardened to a certain degree, completing construction of a part of well wall, and preparing construction of an adjacent part of the well wall on the lower part;
9) And repeating the steps 5) to 8) until the reverse construction of the wall of the pipe-jacking working well is completed.
2. The construction method of the pipe jacking working well wall reverse system in the soft soil area according to claim 1, wherein the connecting ring beam (4) is arranged at the top of the pipe jacking working well and is tangent to the inner wall of the waterproof curtain (2), the annular guide wall (1) is tangent to the outer wall of the waterproof curtain (2), and the height of the annular guide wall (1) is consistent with that of the connecting ring beam (4).
3. The construction method of the pipe jacking working well wall reverse system in the soft soil area according to claim 1, characterized in that lower reinforcing bars of the connecting ring beam (4) are tied together with ring beam connecting bars (9) at the top of the H-shaped steel (7), and then concrete is poured to connect the connecting ring beam (4) and the H-shaped steel (7).
4. The construction method of the pipe-jacking working well wall reverse system in the soft soil area according to claim 1, characterized in that the well wall steel bar connecting ribs (8) are arranged on two sides of the upper extending part of the H-shaped steel (7), the template hanging ribs (10) are arranged on the flange part facing to one side inside the well wall,
the top is provided with a ring beam connecting rib (9).
5. The construction method of the pipe jacking working well wall reverse system in the soft soil area according to claim 1, wherein the well wall reinforcement cages (5) are arc sheets wound on two sides of the H-shaped steel (7), and the adjacent well wall reinforcement cages (5) are overlapped and welded and fixed from top to bottom.
6. The construction method of the pipe-jacking working well wall reverse system in the soft soil area according to claim 1, wherein the inner wall formwork (6) of each unit is curved, the two sides of the inner wall formwork (6) are provided with the rib hanging holes (14), the four sides are provided with the tongue-and-groove openings (13) convenient to install, and the upper end of the inner wall formwork (6) is provided with the concrete pouring opening (15).
7. The construction method of the pipe jacking working well wall reverse system in the soft soil area according to claim 1, wherein in the step of digging a core soil body, when an excavator is used for digging earthwork, the central range of a foundation pit must be dug firstly, then peripheral soil is dug symmetrically, and finally, the excavation and the trimming of the wall protection range are carried out manually.
8. The construction method of the pipe jacking working well wall reverse system in the soft soil area according to claim 1, wherein the waterproof curtain (2) is tangent to the outer wall of the pipe jacking working well, the waterproof curtain (2) is flush with the top of the pipe jacking working well, and the depth of the waterproof curtain (2) exceeds the depth of the pipe jacking working well.
9. A pipe-jacking working well wall in a soft soil area, which is characterized by being obtained by the construction method of the pipe-jacking working well wall reverse system in the soft soil area according to any one of claims 1 to 8.
10. The utility model provides a pipe jacking working well wall of a well reverse-operation system in soft soil area which characterized in that includes: the device comprises an annular guide wall (1) arranged on the periphery of a pipe-jacking working well, a waterproof curtain (2), bottom rigid-flexible combined piles (3), a connecting ring beam (4), a well wall reinforcement cage (5) and an inner wall template (6); the bottom of the wall of a pipe working well is arranged in to bottom rigid-flexible composite pile (3), water-stop curtain (2) is arranged on the outer side of bottom rigid-flexible composite pile (3), annular guide wall (1) is arranged on the outer side of water-stop curtain (2) and tangent to the outer wall of water-stop curtain (2), wherein bottom rigid-flexible composite pile (3) comprises large-diameter stirring pile (11) arranged at the bottom of the wall of the pipe working well and H-shaped steel (7) inserted in large-diameter stirring pile (11), connecting ring beam (4) is arranged on the top of the pipe working well and tangent to the inner wall of water-stop curtain (2), the lower part of connecting ring beam (4) is connected with H-shaped steel (7), wall reinforcement cage (5) is lapped on two sides of H-shaped steel (7), inner wall formwork (6) is fixed through formwork hanging ribs (10) on H-shaped steel (7), and pouring port (15) of concrete is arranged at the upper end of inner wall formwork (6).
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| CN113027463B (en) * | 2021-03-24 | 2022-08-30 | 山东建筑大学 | Suspension type reverse wall working well supporting structure and construction method |
| CN114263186A (en) * | 2021-12-27 | 2022-04-01 | 中铁二十局集团第五工程有限公司 | Reverse arch ring supporting method for water-rich area near existing line |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507345A (en) * | 2015-12-04 | 2016-04-20 | 嘉库智能停车系统（上海）有限公司 | Reversed construction method for well type fully-automatic three-dimensional garage |
| CN106759364A (en) * | 2016-11-28 | 2017-05-31 | 中冶建工集团有限公司 | Deep basal pit base plate step-by-step construction method |
| CN108457289A (en) * | 2018-03-21 | 2018-08-28 | 广州市恒盛建设工程有限公司 | A kind of open caisson construction method of complex condition |
| CN109162284A (en) * | 2018-10-31 | 2019-01-08 | 中国十九冶集团有限公司 | A kind of seashore beach ground underground structure deep foundation pit support and its construction method |
| CN109306712A (en) * | 2018-04-20 | 2019-02-05 | 中建四局第六建筑工程有限公司 | Upper pipe working well is inverse to build construction |
| CN109797778A (en) * | 2019-03-27 | 2019-05-24 | 中铁四局集团有限公司 | One kind being suitable for the anhydrous layer of sand area upper pipe working well in desert and construction method |
| CN109882192A (en) * | 2019-02-26 | 2019-06-14 | 重庆交通建设(集团)有限责任公司 | TBM starting well shaft construction method |
-
2020
- 2020-11-09 CN CN202011242232.XA patent/CN112412472B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507345A (en) * | 2015-12-04 | 2016-04-20 | 嘉库智能停车系统（上海）有限公司 | Reversed construction method for well type fully-automatic three-dimensional garage |
| CN106759364A (en) * | 2016-11-28 | 2017-05-31 | 中冶建工集团有限公司 | Deep basal pit base plate step-by-step construction method |
| CN108457289A (en) * | 2018-03-21 | 2018-08-28 | 广州市恒盛建设工程有限公司 | A kind of open caisson construction method of complex condition |
| CN109306712A (en) * | 2018-04-20 | 2019-02-05 | 中建四局第六建筑工程有限公司 | Upper pipe working well is inverse to build construction |
| CN109162284A (en) * | 2018-10-31 | 2019-01-08 | 中国十九冶集团有限公司 | A kind of seashore beach ground underground structure deep foundation pit support and its construction method |
| CN109882192A (en) * | 2019-02-26 | 2019-06-14 | 重庆交通建设(集团)有限责任公司 | TBM starting well shaft construction method |
| CN109797778A (en) * | 2019-03-27 | 2019-05-24 | 中铁四局集团有限公司 | One kind being suitable for the anhydrous layer of sand area upper pipe working well in desert and construction method |
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