CN210163910U - Pipeline pipe jacking receiving well foundation pit supporting structure - Google Patents
Pipeline pipe jacking receiving well foundation pit supporting structure Download PDFInfo
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- CN210163910U CN210163910U CN201920791942.4U CN201920791942U CN210163910U CN 210163910 U CN210163910 U CN 210163910U CN 201920791942 U CN201920791942 U CN 201920791942U CN 210163910 U CN210163910 U CN 210163910U
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Abstract
The utility model relates to a pipeline push pipe receiving well foundation pit supporting structure, which comprises a first supporting wall and a second supporting wall which are arranged on the side wall of the pipeline push pipe receiving well foundation pit, wherein the first supporting wall is distributed on the left side and the right side of the pipeline; the second supporting walls are distributed on the upper side and the lower side of the pipeline; and steel waist beams are transversely fixed on the first supporting walls on each side wall of the pipeline top pipe receiving well foundation pit at the same horizontal height position, and steel plate supports are arranged at the corners of the steel waist beams on the first supporting walls on the two adjacent sides of the pipeline top pipe receiving well foundation pit. The utility model relates to a pipeline push pipe receiving well underground structure adopts "Larsen steel sheet pile + steel sheet to prop + horizontal fender apron" jointly to strut the system, convenient operation, and the security is high, and the steel sheet pile all can be retrieved, and economic nature is better, has fully realized the advantage of resource recycling.
Description
Technical Field
The utility model relates to a push pipe receiving well foundation pit supporting construction's technical field, concretely relates to pipeline push pipe receiving well foundation pit supporting construction.
Background
With the continuous improvement of living standard of people, underground pipelines such as water supply, water drainage, electric power, telecommunication, natural gas and the like of urban roads are gradually complicated, and a great deal of inconvenience is brought to the road pipeline reconstruction project. Particularly, for complex surrounding environments such as deep sludge or sludge soft soil areas and buildings (structures) close to the ground, the traditional open-cut construction method has extremely high risk and seriously restricts the healthy development of urban road pipeline engineering. After the tunnel shield construction technology, the pipe-jacking construction technology is developed rapidly. In view of the advantages of small excavation range, flexible line layout, small influence by ground buildings (structures), low construction noise and the like of pipe jacking construction, the pipe jacking construction method plays an increasingly important role in laying and repairing underground pipelines. After the pipe jacking construction is finished, the pipe jacking machine head is generally recovered by adopting a sinking well method or an open cut method. However, for deep silt or soft silt areas, the difference of soil layer properties is large, and the sinking speed of the open caisson is unstable, the inclination and displacement of the open caisson are large and the like easily caused by the open caisson method construction, so that the feasibility is low. In addition, the existing open-cut method mostly adopts cast-in-place piles or SMW cement mixing wall supporting structures for double rows and above pipelines with large span in deep soft soil stratum, the method has high cost and long construction period, and the recovery efficiency of the pipe jacking machine head is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a pipeline push pipe receiving well underground structure is provided, for the quick, safe, the economic recovery of deep weak soil district push pipe aircraft nose, an effectual solution way is provided.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a pipeline jacking pipe receiving well foundation pit supporting structure is characterized in that a pipeline jacking pipe receiving well foundation pit with a corner is adopted as the pipeline jacking pipe receiving well foundation pit, a pipeline with one end extending into the pipeline is embedded in one side wall of the pipeline jacking pipe receiving well foundation pit, the pipeline jacking pipe receiving well foundation pit comprises a first supporting wall and a second supporting wall, the first supporting wall is arranged on each side wall of the pipeline jacking pipe receiving well foundation pit, the second supporting wall is arranged on one side wall of the pipeline jacking pipe receiving well foundation pit, the side wall where the second supporting wall is located is the side wall where the pipeline is located, the first supporting wall and the second supporting wall are used for fully distributing the side wall of the pipeline jacking pipe receiving well foundation pit, and the first supporting wall is composed of a plurality of Larsen steel sheet piles vertically fixed on the side wall of the pipeline jacking pipe receiving well foundation pit; the second supporting wall is composed of a plurality of transverse retaining plates which are transversely arranged, and the plurality of transverse retaining plates are distributed on the upper side and the lower side of the pipeline; two ends of each transverse retaining plate are respectively and correspondingly fixed on the two Larsen steel plate piles close to two sides of the pipeline; steel waist beams are transversely fixed on the inner side of each first supporting wall at the same horizontal height position, two steel waist beams of two adjacent first supporting walls at the same horizontal height position are connected at the corner of the pipeline jacking pipe receiving well foundation pit, and a steel plate support is fixed on the inner side of the connection position of the two steel waist beams; and an operating platform is arranged at the bottom of the foundation pit of the pipeline jacking pipe receiving well.
The utility model has the advantages that: the utility model relates to a pipeline push pipe receiving well foundation pit supporting structure adopts the combined supporting system of "Larsen steel sheet pile + steel sheet support + horizontal retaining plate", and convenient operation, the security is high, and the steel sheet pile all can be retrieved, and economic nature is better, has fully realized the advantage of resource recycle; the operation platform provides an operation platform for the recovery of the pipe jacking machine head in the soft soil area, and the operation is convenient.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the operating platform comprises a cement soil mixing pile arranged at the bottom of the pipeline jacking pipe receiving well foundation pit, and the cement soil mixing pile is arranged in a pit bottom full hall manner and is attached to the Larsen steel sheet pile; and a concrete layer is arranged on the upper surface of the cement mixing pile.
The beneficial effect of adopting the further scheme is that: the soil body in front of the Larsen steel sheet pile is reinforced by adopting the cement soil mixing pile, so that the pit bottom uplift risk easily occurring in a deep soft soil area is solved, the mechanical property of silt or silt soft soil is obviously improved, and the stability of a foundation pit is greatly enhanced; the concrete layer provides an operation platform for recovering the pipe jacking machine head in the soft soil area.
Further, the steel waist rail is a double-spliced 25b I-steel waist rail formed by a first 25b I-steel and a second 25b I-steel, and one end face of the first 25b I-steel and one end face of the second 25b I-steel are welded on the corresponding first supporting wall.
The beneficial effect of adopting the further scheme is that: the steel waist rail is specifically a double-spliced 25b I-shaped steel waist rail, and the protection structure is firm and convenient for installation of the steel plate support.
Further, the steel plate support comprises two first steel plates and two second steel plates, the first steel plates are horizontally arranged, the two adjacent side faces of the first steel plates are welded to the two adjacent side faces of the first steel plates respectively, the two first supporting walls are arranged on the same horizontal height, the first 25b I-steel is arranged on the other end face of the corner, the second steel plates are horizontally arranged, the two adjacent side faces of the first steel plates are welded to the two corresponding adjacent first supporting walls on the same horizontal height, the second 25b I-steel is arranged on the other end face of the corner, the second steel plates are vertically arranged between the two first steel plates, the upper ends and the lower ends of the second steel plates are welded to the two opposite surfaces of the first steel plates respectively, one side end of each second steel plate is welded to the two adjacent first supporting walls on the same horizontal height, and the first 25b I-steel is arranged on the other end face of the corner The joint of the I-shaped steel and the joint of the two second 25b I-shaped steel welded on the same horizontal height of the corresponding adjacent first supporting walls.
The beneficial effect of adopting the further scheme is that: the steel plate support is composed of two first steel plates and one second steel plate, and is simple in structure and stable in support structure.
Further, the transverse retaining plate is of a 28b channel steel structure, and two adjacent transverse retaining plates are arranged at intervals.
The beneficial effect of adopting the further scheme is that: the transverse retaining plates are 28b channel steel structures and are arranged at intervals, so that passing-through pipelines can be protected from being damaged, construction materials are saved, and meanwhile, the protection capability of the supporting system is comprehensively improved.
And the water intercepting ditch is arranged on the ground close to the top of the pipeline jacking pipe receiving well foundation pit.
The beneficial effect of adopting the further scheme is that: the intercepting ditch is used for draining surface accumulated water, rainwater and construction water and protecting a supporting structure.
Drawings
Fig. 1 is a schematic plan view of a foundation pit supporting structure of a pipe jacking receiving well of the utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a plan view of a cement mixing pile and a Larsen steel sheet pile in close contact;
FIG. 4 is a schematic elevation view of a second retaining wall;
FIG. 5 is a schematic view of reinforcing a steel waist beam corner;
fig. 6 is a sectional view B-B of fig. 5.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the pipe jacking receiving well foundation pit comprises a pipe jacking receiving well foundation pit, 2 Larsen steel plate piles, 3 steel waist beams, 31 first 25b I-beams, 32 second 25b I-beams, 4 steel plate supports, 41 first steel plates, 42 second steel plates, 5 transverse retaining plates, 6 pipelines, 7 cement mixing piles, 8 top surfaces, 9 cut-off ditches, 10 concrete layers.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 6, a pipeline top pipe receiving well foundation pit supporting structure, wherein the pipeline top pipe receiving well foundation pit 1 is a pipeline top pipe receiving well foundation pit with a corner, a pipeline 6 (the 'it' refers to the pipeline jacking pipe receiving well foundation pit 1) with one end extending into the pipeline jacking pipe receiving well foundation pit 1 is embedded in the side wall of one side of the pipeline jacking pipe receiving well foundation pit 1, the pipeline jacking pipe receiving well foundation pit comprises a first supporting wall arranged on the side wall of each side of the pipeline jacking pipe receiving well foundation pit 1, and comprises a second supporting wall arranged on the side wall of one side of the pipeline jacking pipe receiving well foundation pit 1, the side wall where the second supporting wall is located is the side wall where the pipeline 6 is located, the first supporting wall and the second supporting wall fully distribute the side wall of the foundation pit of the pipeline jacking pipe receiving well, the first supporting wall is composed of a plurality of Larsen steel sheet piles 2 vertically fixed on the side wall of the pipeline top pipe receiving well foundation pit 1; the second supporting wall is composed of a plurality of transverse retaining plates 5 which are transversely arranged, and the plurality of transverse retaining plates 5 are distributed on the upper side and the lower side of the pipeline 6; two ends of each transverse retaining plate 5 are respectively and correspondingly fixed on the two Larsen steel plate piles 2 close to two sides (specifically, the left side and the right side) of the pipeline 6; (that is, on one side of the pipeline top pipe receiving well foundation pit 1 where the pipeline 6 is located, a plurality of larsen steel sheet piles 2 and a plurality of transverse retaining plates 5 are distributed, the plurality of larsen steel sheet piles 2 are distributed on the left and right sides of the pipeline 6, and the plurality of transverse retaining plates 5 are distributed on the upper and lower sides of the pipeline 6), steel waist beams 3 are transversely fixed on the inner sides of each first supporting wall at the same horizontal height position, two steel waist beams 3 of two adjacent first supporting walls at the same horizontal height position are connected at the corners of the pipeline top pipe receiving well foundation pit, and steel plate supports 4 are fixed on the inner sides of the joints of the two (where "two" means two steel waist beams 3 of two adjacent first supporting walls at the same horizontal height position); and an operating platform is arranged at the bottom of the pipeline jacking pipe receiving well foundation pit 1.
The utility model discloses in:
the operation platform comprises a cement soil mixing pile 7 arranged at the bottom of the pipeline jacking pipe receiving well foundation pit 1, wherein the cement soil mixing pile 7 is arranged in a pit bottom full-space manner and is attached to the Larsen steel plate pile 2; and a concrete layer 10 is arranged on the upper surface of the cement mixing pile 7.
Specifically, the bottom of the pipeline jacking pipe receiving well foundation pit 1 is backfilled with 0.5m thick C20 concrete to form a concrete layer 10, so that an operation platform is provided for the recovery of the jacking pipe machine head. The cement soil mixing pile 7 is arranged on the inner side of the Larsen steel plate pile 2, the Larsen steel plate pile and the Larsen steel plate pile are tightly attached, and the reinforcing mode adopts full-hall arrangement; the cement soil mixing pile 7 is specifically a double-shaft cement soil mixing pile, the diameter of the pile is 650mm, the longitudinal and transverse intervals are 450mm, and the occlusion is 200 mm. The strength grade of the common Portland cement adopted by the cement soil mixing pile 7 is not lower than 42.5MPa, the cement consumption of the solid mixing pile below the bottom of the pipeline jacking pipe receiving well foundation pit 1 is about 18%, and the cement consumption of the air mixing pile above the bottom of the pipeline jacking pipe receiving well foundation pit 1 is about 8%. The cement mixing pile 7 obviously improves the mechanical property of the soft soil stratum and effectively avoids the pit bottom uplift risk easily occurring in the deep and soft soil area.
The utility model discloses in:
the steel wale 3 is specifically a double-spliced 25b I-beam waist beam composed of a first 25b I-beam 31 and a second 25b I-beam 32, and one end face of the first 25b I-beam 31 and one end face of the second 25b I-beam 32 are welded on the corresponding first supporting wall.
The utility model discloses in:
the steel plate support 4 comprises a first steel plate 41 and a second steel plate 42, the first steel plate 41 is provided with two pieces, the first steel plate 41 is horizontally arranged, two adjacent side faces of the first steel plate 41 are respectively welded on two adjacent first supporting walls at the same horizontal height, the first 25b I-steel 31 is arranged on the other end face of the corner, the second steel plate 41 is horizontally arranged, two adjacent side faces of the first steel plate 41 are respectively welded on the other end face of the corresponding two adjacent first supporting walls at the same horizontal height, the second 25b I-steel 32 is arranged on the other end face of the corner, the second steel plate 42 is vertically arranged between the two first steel plates 41, the upper end and the lower end of the second steel plate 42 are respectively welded on two opposite surfaces of the two first steel plates 41, one side end of the second steel plate 42 is further welded at the joint of two first 25b I-beams 31 of two adjacent first retaining walls at the same horizontal height, and at the joint of two second 25b I-beams 32 of two corresponding adjacent first retaining walls at the same horizontal height
The utility model discloses in:
the transverse retaining plate 5 is of a 28b channel steel structure, and two adjacent transverse retaining plates 5 are arranged at intervals.
The utility model discloses in:
the utility model discloses still include catch basin 9, catch basin 9 sets up to be close to the pipeline push pipe receives on the ground 8 at the top at well foundation ditch 1 top. The size of the intercepting ditch 9 is set to be 300mm multiplied by 300mm, and the intercepting ditch is used for draining surface accumulated water, rainwater and construction water.
In this embodiment, the following are specific:
the Larsen steel sheet pile 2 adopts an FSP-IV type, the wall thickness is 15.5mm, and the cross sectional area is 96.99cm2Each slice of the quadratic moment is 4670cm438600cm per meter4Section modulus of 362cm per piece32270cm per meter3。
The first steel plate 41 has dimensions of 1000mm × 1000mm × 12mm, and the second steel plate 42 has dimensions of 700mm × 200mm × 12 mm. The steel waist beam 3 is arranged between the steel plate support 4 and the Larsen steel plate pile 2, the steel plate support 4, the steel waist beam 3 and the Larsen steel plate pile 2 need to be welded, and the size of a welding angle is 10mm, so that a supporting system with high rigidity is formed.
Horizontal fender breast board 5 adopts 28b channel-section steel, and adjacent two horizontal fender has 0.28 m's interval between the board 5, and 3 departments of steel waist rail do not set up horizontal fender breast board 5, and horizontal fender breast board 5 is connected through the welded mode with Larsen steel sheet pile 2, and weld length is not less than 20cm, provides stronger supporting construction under the 2 circumstances of Larsen steel sheet pile for unable construction.
The steel plate material used in the utility model is Q235 steel.
The utility model discloses in, figure 1 has given double row pipeline way push pipe receiving well underground structure, and its thought that adopts "divide and treat" is divided into two with the great push pipe receiving well of span, the utility model provides a deep weak soil district double row pipeline push pipe receiving well's underground structure design can also be promoted it to 3 rows and above pipeline condition, for deep weak soil district push pipe aircraft nose quick, safety, economy, efficient recovery, provide a reasonable solution way.
The utility model discloses a concrete implementation step as follows:
the method comprises the following steps: and (4) clearing obstacles, draining water and leveling the field. Before construction of the Larsen steel plate pile 2, necessary obstacle clearing work is carried out, broken stones in miscellaneous fill or plain fill are cleared, surface water is drained, then, cohesive soil is used for backfill and layered tamping treatment is carried out, the layered backfill height is 30cm, and the compaction degree coefficient is not less than 0.93.
Step two: and constructing the Larsen steel sheet pile 2. Before the Larsen steel plate pile 2 is inserted, an antifriction agent needs to be coated, the plane arrangement of the Larsen steel plate pile 2 is to keep the axis straight and smooth, and a crawler-type hydraulic pile driver is adopted for construction. Before piling, the Larsen steel plate pile 2 is hoisted, the verticality or inclination of the pile and the plane of the pile are calibrated, then the hammer is lightly tapped, and after the Larsen steel plate pile 2 is buried for a certain depth, the hammer is heavily tapped until the design height is reached. The construction should ensure that the pile and the pile are buckled, the deviation of the pile position is not more than 50mm, the deviation of the pile top elevation is not more than 100mm, and the vertical deviation is not more than 0.5%.
Step three: and constructing the double-shaft cement-soil mixing pile 11. The method adopts a mechanical hole forming mode, repeated stirring is carried out within the full-length range of the double-shaft cement soil stirring pile 11, the quality control during the construction of the pile body is required to be enhanced, the stirring times are increased if necessary, the horizontal deviation of the pile position is not more than 20mm, the vertical deviation is not more than 0.5%, the pile forming diameter and the pile length are not less than the design values, and the performance index of the pile can meet the design requirement.
Step four: and excavating a foundation pit soil body 1 and constructing a steel plate support 4. Adopt machinery excavation foundation ditch soil body 1, must stop excavating when excavation of foundation ditch to the steel sheet props 4 below the design elevation 0.5m, set up 1 st steel sheet in time and prop, the steel sheet props 4 settings on steel waist roof beam 3, treats that the support frame finishes the back, should inspect the stability of confirming the support, safe rear can continue the excavation construction. When excavating to apart from pipeline top 1.0m position, stop excavating, in time set up the second and prop the steel sheet, the steel sheet props 4 settings on steel waist roof beam 3, treats that the support frame finishes the back, under the circumstances of confirming support stability, can continue to excavate and construct to the foundation ditch bottom.
Step five: c20 concrete 10 construction and pipe jacking machine head recovery. C20 concrete 10 with the thickness of 0.5m is poured at the bottom of the foundation pit, and when the designed strength of the concrete is more than 80%, mechanical construction is adopted to hoist the pipe jacking head, so that the recovery of the pipe jacking head is completed.
Step six: and backfilling the foundation pit and recycling the steel plate support 4. After the pipe jacking machine head is recovered, when the earthwork is backfilled to a position 0.50m below the second steel plate support, the current steel plate support 4 is removed; and continuously backfilling the soil body, wherein the support can be detached when the earthwork is backfilled to 0.5m below the first steel plate support.
Step seven: and recovering the Larsen steel sheet pile 2. Adopting a static method to pull out the Larsen steel sheet piles 2 at intervals, wherein the interval is not less than 2.0m, filling sand into gaps left by pile pulling in time, filling 1:1 cement mortar when the sand filling is not ideal, adopting common silicate cement with the strength grade not less than 42.5MPa as the cement, and enabling the grouting pressure not to be more than 0.1 MPa. And applying an accelerator to the grouting slurry, and grouting while pulling to finish the recovery work of the Larsen steel sheet pile 2.
The combined supporting system of the Larsen steel sheet pile, the steel sheet support and the transverse retaining plate is adopted, so that the combined supporting system is convenient to operate and high in safety, the steel sheet piles can be recycled, the economy is better, and the advantage of resource recycling is fully realized; the soil body in front of the Larsen steel sheet pile is reinforced by adopting the double-shaft cement soil mixing pile, the problem of pit bottom uplift risk easily occurring in a deep soft soil area is solved, the mechanical property of silt or silt soft soil is obviously improved, and the stability of a foundation pit is greatly enhanced.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a pipeline push pipe receiving well underground structure, pipeline push pipe receiving well underground (1) is for having the pipeline push pipe receiving well foundation ditch of corner, one end has been buried underground in the lateral wall of one side of pipeline push pipe receiving well foundation ditch (1) and has stretched into its inside pipeline (6), its characterized in that: the pipeline jacking receiving well foundation pit structure comprises a first supporting wall arranged on the side wall of each side of the pipeline jacking receiving well foundation pit (1) and a second supporting wall arranged on the side wall of one side of the pipeline jacking receiving well foundation pit (1), wherein the side wall where the second supporting wall is located is the side wall where the pipeline (6) is located, the first supporting wall and the second supporting wall are used for fully distributing the side wall of the pipeline jacking receiving well foundation pit (1), and the first supporting wall is composed of a plurality of Larsen steel sheet piles (2) vertically fixed on the side wall of the pipeline jacking receiving well foundation pit (1); the second supporting wall is composed of a plurality of transverse retaining plates (5) which are transversely arranged, and the plurality of transverse retaining plates (5) are distributed on the upper side and the lower side of the pipeline (6); two ends of each transverse retaining plate (5) are respectively and correspondingly fixed on the two Larsen steel plate piles (2) close to two sides of the pipeline (6); a steel waist beam (3) is transversely fixed on the inner side of each first supporting wall at the same horizontal height position, two steel waist beams (3) of two adjacent first supporting walls at the same horizontal height position are connected at the corner of the pipeline jacking pipe receiving well foundation pit, and a steel plate support (4) is fixed on the inner side of the connection position of the two steel waist beams; an operating platform is arranged at the bottom of the pipeline jacking pipe receiving well foundation pit (1).
2. The pipe jacking pipe receiving well foundation pit supporting structure of claim 1, wherein: the operation platform comprises a cement soil mixing pile (7) arranged at the bottom of the pipeline jacking pipe receiving well foundation pit (1), wherein the cement soil mixing pile (7) is arranged in a pit bottom full-space manner and is attached to the Larsen steel plate pile (2); and a concrete layer (10) is arranged on the upper surface of the cement mixing pile (7).
3. The pipe jacking pipe receiving well foundation pit supporting structure of claim 1 or 2, wherein: the steel waist rail (3) is specifically a double-spliced 25b I-steel waist rail composed of a first 25b I-steel (31) and a second 25b I-steel (32), and one end face of the first 25b I-steel (31) and one end face of the second 25b I-steel (32) are welded on the corresponding first supporting wall.
4. The pipe jacking pipe receiving well foundation pit supporting structure of claim 3, wherein: the steel plate support (4) comprises a first steel plate (41) and a second steel plate (42), the first steel plate (41) is provided with two first steel plates (41), the first steel plate (41) is horizontally arranged, two adjacent two side faces of the first steel plate (41) are respectively welded on two adjacent first retaining walls at the same horizontal height, the first 25b I-shaped steel (31) is arranged on the other end face of the corner, the second steel plate (41) is horizontally arranged, two adjacent two side faces of the first steel plate (41) are respectively welded on the other end face of the corresponding two adjacent first retaining walls at the same horizontal height, the second 25b I-shaped steel (32) is arranged on the other end face of the corner, the second steel plate (42) is vertically arranged between the two first steel plates (41), and the upper end and the lower end of the second steel plate (42) are respectively welded on two opposite surfaces of the first steel plates (41), one side end of the second steel plate (42) is further welded at the joint of two first 25b I-beams (31) of two adjacent first supporting walls on the same horizontal height, and at the joint of two second 25b I-beams (32) of two corresponding adjacent first supporting walls on the same horizontal height.
5. The pipe jacking pipe receiving well foundation pit supporting structure of claim 1 or 2, wherein: the transverse retaining plate (5) is of a 28b channel steel structure, and two adjacent transverse retaining plates (5) are arranged at intervals.
6. The pipe jacking pipe receiving well foundation pit supporting structure of claim 1 or 2, wherein: the pipeline jacking pipe receiving well further comprises a water intercepting ditch (9), wherein the water intercepting ditch (9) is arranged on the top ground (8) close to the top of the pipeline jacking pipe receiving well foundation pit (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920791942.4U CN210163910U (en) | 2019-05-29 | 2019-05-29 | Pipeline pipe jacking receiving well foundation pit supporting structure |
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| CN201920791942.4U CN210163910U (en) | 2019-05-29 | 2019-05-29 | Pipeline pipe jacking receiving well foundation pit supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160329A (en) * | 2020-09-03 | 2021-01-01 | 安徽省国元建工集团有限公司 | Detachable groove supporting device for replacing underground pipeline and implementation method thereof |
| CN114110254A (en) * | 2021-11-02 | 2022-03-01 | 上海市基础工程集团有限公司 | Underwater recovery device of push bench |
-
2019
- 2019-05-29 CN CN201920791942.4U patent/CN210163910U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160329A (en) * | 2020-09-03 | 2021-01-01 | 安徽省国元建工集团有限公司 | Detachable groove supporting device for replacing underground pipeline and implementation method thereof |
| CN114110254A (en) * | 2021-11-02 | 2022-03-01 | 上海市基础工程集团有限公司 | Underwater recovery device of push bench |
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