CN215948163U - Combined pile enclosure structure for construction of subway station under low clearance - Google Patents
Combined pile enclosure structure for construction of subway station under low clearance Download PDFInfo
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- CN215948163U CN215948163U CN202122462484.XU CN202122462484U CN215948163U CN 215948163 U CN215948163 U CN 215948163U CN 202122462484 U CN202122462484 U CN 202122462484U CN 215948163 U CN215948163 U CN 215948163U
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Abstract
The utility model discloses a combined pile enclosure structure for construction of a subway station under low clearance, which comprises a plurality of cast-in-situ bored piles and a plurality of high-pressure jet grouting piles, wherein a reinforcement cage is arranged in each cast-in-situ bored pile and comprises a plurality of segmental reinforcement cages, main reinforcements at the connecting positions of two adjacent segmental reinforcement cages are provided with staggered thread heads, and the main reinforcements at the connecting positions of the two adjacent segmental reinforcement cages are connected through threaded sleeves. The combined type enclosure pile has the advantages that the design is novel and reasonable, the practicability is high, the drilling and pouring steel reinforcement cage is set to be the segmented steel reinforcement cage, the safety and the reliability of the hoisting process of the drilling and pouring pile steel reinforcement cage under the low clearance are guaranteed, the main reinforcements at the connecting positions of two adjacent segmented steel reinforcement cages are connected through the threaded sleeves, the connecting efficiency of the segmented steel reinforcement cages is improved, the problem of hole forming collapse caused by overlong connecting time of the steel reinforcement cages is solved, the construction quality is improved, the combined type enclosure pile is convenient and rapid to construct, the construction efficiency is high, the construction quality is guaranteed, and the combined type enclosure pile is convenient to popularize and use.
Description
Technical Field
The utility model belongs to the technical field of subway station enclosing structures, and particularly relates to a combined pile enclosing structure for subway station construction under low clearance.
Background
With the rapid development of urban subway construction, subway station construction needs to face various complex surrounding environments, so that the subway station construction process requirements are higher and higher; for the subway station enclosure structure, an underground continuous wall enclosure structure is conventionally adopted, however, under the condition of low-clearance construction, the underground continuous wall has large amplitude section and complicated construction process, each reinforcement cage needs to be hoisted and welded in a segmented mode, butt joint is difficult during hoisting of the reinforcement cage, welding leakage or insufficient welding length is easy to occur during welding, huge potential safety hazards exist during hoisting of the reinforcement cage, and the phenomena of hole collapse and overlarge tank bottom sediment are easy to occur on the wall of the underground continuous wall due to overlong welding time of each reinforcement cage, so that the quality of the underground continuous wall enclosure structure is affected; therefore, at present, a low-clearance subway station enclosure structure which is reasonable in design, convenient to construct, simple in structure and similar to a conventional underground continuous wall in supporting effect of a foundation pit is lacking, and the problem that the existing low-clearance subway enclosure structure is difficult to construct is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems in the prior art, and provides a combined pile enclosure structure for the construction of a subway station under low clearance, which is novel and reasonable in design and strong in practicability, wherein a plurality of cast-in-situ bored piles are arranged between diaphragm walls on two sides under low clearance, and a plurality of high-pressure jet grouting piles are arranged on one side, away from a subway station foundation pit, of the cast-in-situ bored piles to form a continuous and closed enclosure structure, the structure is stable and reliable, the cast-in-situ bored reinforcement cage is arranged into a segmented reinforcement cage, the hoisting process of the cast-in-situ bored pile reinforcement cage under low clearance is ensured to be safe and reliable, main reinforcements at the connecting positions of two adjacent segmented reinforcement cages are alternately provided with screw heads, the main reinforcements are connected through threaded sleeves, the connecting efficiency of the segmented reinforcement cage is improved, the problem of collapse and pore formation caused by the connecting time of the reinforcement cage is avoided, the construction quality is improved, the combined enclosure pile is convenient to construct, The method has the advantages of rapidness, high construction efficiency, guaranteed construction quality and convenience in popularization and use.
In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a railway station construction is with combination stake envelope under low headroom which characterized in that: including being located a plurality of drilling bored concrete piles under the low headroom between the wall of both sides ground even, a plurality of drilling bored concrete piles deviate from subway station foundation ditch one side and set up a plurality of high pressure jet grouting piles, and drilling bored concrete pile inside is provided with steel reinforcement cage, steel reinforcement cage includes a plurality of merogenesis steel reinforcement cages, and the main muscle of two adjacent merogenesis steel reinforcement cage hookups department is provided with staggered arrangement's stub, and the main muscle of junction passes through threaded sleeve and connects between two adjacent merogenesis steel reinforcement cages.
Foretell underground railway station construction is with combination pile envelope under low headroom, its characterized in that: the distance between two adjacent cast-in-situ bored piles is 100-200 mm.
Foretell underground railway station construction is with combination pile envelope under low headroom, its characterized in that: and two adjacent high-pressure jet grouting piles are mutually meshed and connected.
Foretell underground railway station construction is with combination pile envelope under low headroom, its characterized in that: the enclosure length of the high-pressure jet grouting piles is longer than that of the cast-in-situ bored piles.
Foretell underground railway station construction is with combination pile envelope under low headroom, its characterized in that: and the high-pressure jet grouting pile is connected with the cast-in-situ bored pile and the underground diaphragm wall in an occluded manner.
Foretell underground railway station construction is with combination pile envelope under low headroom, its characterized in that: and a plurality of grouting reinforcement layers are arranged on one sides of the cast-in-situ bored piles close to the subway station foundation pit, and reinforcing mesh sheets are arranged in the grouting reinforcement layers.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the plurality of cast-in-situ bored piles are arranged under the low clearance between the underground diaphragm walls on the two sides, and the plurality of high-pressure jet grouting piles are arranged on one side of the plurality of cast-in-situ bored piles, which is far away from the subway station foundation pit, so that a continuous and closed enclosure structure is formed, and the structure is stable and reliable, and is convenient to popularize and use.
2. According to the utility model, the drilling cast-in-place reinforcement cage is set to be the segmented reinforcement cage, so that the safety and reliability of the hoisting process of the drilling cast-in-place pile reinforcement cage under low clearance are ensured, the main reinforcements at the connecting positions of two adjacent segmented reinforcement cages are staggered to form the thread heads, the main reinforcements are connected through the threaded sleeves, the connecting efficiency of the segmented reinforcement cages is improved, the problem of hole forming collapse caused by overlong connecting time of the reinforcement cages is avoided, and the construction quality is improved.
3. The utility model has novel and reasonable design and simple structure, two adjacent high-pressure jet grouting piles are in meshed connection with each other, the high-pressure jet grouting piles are in meshed connection with the cast-in-situ bored piles, the whole construction is mechanized, the construction is convenient, and the popularization and the use are convenient.
In conclusion, the combined type enclosure pile has the advantages that the design is novel and reasonable, the practicability is high, the continuous and closed enclosure structure is formed by arranging the plurality of cast-in-situ bored piles between the underground diaphragm walls on the two sides in a low clearance mode and arranging the plurality of high-pressure jet grouting piles on one side, away from the subway station foundation pit, of the plurality of cast-in-situ bored piles, the structure is stable and reliable, the cast-in-situ bored steel reinforcement cage is arranged into the segmented steel reinforcement cage, the safe and reliable hoisting process of the cast-in-situ bored steel reinforcement cage under the low clearance mode is guaranteed, the screw heads are arranged at the connecting positions of two adjacent segmented steel reinforcement cages in a staggered mode, the main reinforcements are connected through the threaded sleeves, the connection efficiency of the segmented steel reinforcement cage is improved, the problem of hole forming collapse caused by overlong connection time of the steel reinforcement cage is solved, the construction quality is improved, and the combined type enclosure pile is convenient and rapid to construct, high in construction efficiency, guaranteed and convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic perspective view of the combined fender post structure of the utility model.
Fig. 2 is a schematic plan view of the structure of the combined fender post of the utility model.
Fig. 3 is a schematic view of a reinforcement cage framework of the cast-in-situ bored pile of the present invention.
FIG. 4 is a schematic view of the connection between the interlaced main rib and the screw head according to the present invention.
Description of reference numerals:
| 1-low headroom region; | 2-diaphragm wall; | 3, drilling a cast-in-place pile; |
| 4-high pressure jet grouting pile; | 5-reinforcing mesh; | 6, segmenting a reinforcement cage; |
| 7-main reinforcement; | 8-filament ends; | 9-threaded sleeve. |
Detailed Description
As shown in fig. 1 to 4, the utility model comprises a plurality of cast-in-situ bored piles 3 located between underground diaphragm walls 2 at two sides and under a low clearance, wherein a plurality of high-pressure jet grouting piles 4 are arranged at one side of the cast-in-situ bored piles 3, which deviates from a subway station foundation pit, a steel reinforcement framework is arranged inside the cast-in-situ bored piles 3, the steel reinforcement framework comprises a plurality of segmental steel reinforcement cages 6, main reinforcements 7 at the connection positions of two adjacent segmental steel reinforcement cages 6 are provided with staggered thread heads 8, and the main reinforcements 7 at the connection positions between two adjacent segmental steel reinforcement cages 6 are connected through threaded sleeves 9.
It should be noted that, set up a plurality of drilling bored concrete piles and set up a plurality of high pressure at a plurality of drilling bored concrete piles and deviate from subway station foundation ditch one side and spout the stake soon at a plurality of drilling bored concrete piles between the wall even of both sides low headroom, form continuous and confined envelope, stable in structure is reliable, it sets up drilling bored concrete reinforcement cage into the segmentation steel reinforcement cage, guaranteed that drilling bored concrete pile steel reinforcement cage hoist and mount process safe and reliable under low headroom, two adjacent segmentation steel reinforcement cage hookup location main muscle crisscross the setting nipple, the main muscle passes through threaded sleeve and connects, improve segmentation steel reinforcement cage connection efficiency, avoid leading to the problem that the pore-forming sinks because of steel reinforcement cage connection time overlength, construction quality is improved.
In this embodiment, the distance between two adjacent cast-in-situ bored piles (3) is 100-200 mm.
In this embodiment, two adjacent high-pressure jet grouting piles 4 are connected in an engaged manner.
In this embodiment, the enclosure length of the plurality of high-pressure jet grouting piles 4 is longer than the enclosure length of the plurality of cast-in-situ bored piles 3.
In this embodiment, the high-pressure jet grouting pile 4 is engaged with the cast-in-situ bored pile 3 and the diaphragm wall 2.
In this embodiment, it is a plurality of bored concrete pile 3 is close to subway station foundation ditch one side and is provided with the shotcrete back up coat, built-in reinforcing bar net piece 5 of shotcrete back up coat.
When the method is implemented, firstly, the number and the length of the sections of the segmented reinforcement cage 6 are obtained through calculation according to the clearance height of the low clearance area 1, and the segmented reinforcement cage 6 is manufactured; then a plurality of cast-in-situ bored piles 3 are constructed in a low clearance area between the underground diaphragm walls 2 on the two sides, after the construction of the plurality of cast-in-situ bored piles 3 is completed, a plurality of high-pressure jet grouting piles 4 are constructed on one side, deviating from the foundation pit, of the plurality of cast-in-situ bored piles 3, after the foundation pit is excavated, a reinforcing mesh 5 is hung on one side, close to the foundation pit of the subway station, of the plurality of cast-in-situ bored piles 3 and is sprayed with grout, the reinforcing mesh is implanted into the underground diaphragm walls 2 on the two sides, the plurality of cast-in-situ bored piles 3 are connected with the conventional underground diaphragm walls 2 through the high-pressure jet grouting piles 4 and the hanging reinforcing mesh, and a continuous and closed enclosure structure is formed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a railway station construction is with combination stake envelope under low headroom which characterized in that: including being located between both sides ground even wall (2) a plurality of drilling bored concrete piles (3) under the low headroom, a plurality of drilling bored concrete piles (3) deviate from subway station foundation ditch one side and set up a plurality of high pressures and spout stake (4) soon, drilling bored concrete pile (3) inside is provided with steel reinforcement cage, steel reinforcement cage includes a plurality of subsection steel reinforcement cages (6), and main muscle (7) of two adjacent subsection steel reinforcement cages (6) hookup location department are provided with staggered arrangement's silk head (8), and main muscle (7) of junction are connected through threaded sleeve (9) between two adjacent subsection steel reinforcement cages (6).
2. The combined pile enclosure structure for the construction of the underground railway station with low clearance as claimed in claim 1, wherein: the distance between two adjacent cast-in-situ bored piles (3) is 100-200 mm.
3. The combined pile enclosure structure for the construction of the underground railway station with low clearance as claimed in claim 1, wherein: and two adjacent high-pressure jet grouting piles (4) are mutually meshed and connected.
4. The combined pile enclosure structure for the construction of the underground railway station with low clearance as claimed in claim 1, wherein: the enclosure length of the high-pressure jet grouting piles (4) is longer than that of the cast-in-situ bored piles (3).
5. The combined pile enclosure structure for the construction of the underground railway station with low clearance as claimed in claim 1, wherein: and the high-pressure jet grouting pile (4) is connected with the cast-in-situ bored pile (3) and the diaphragm wall (2) in a meshing manner.
6. The combined pile enclosure structure for the construction of the underground railway station with low clearance as claimed in claim 1, wherein: and a plurality of grouting reinforcement layers are arranged on one sides of the cast-in-situ bored piles (3) close to the subway station foundation pit, and reinforcing mesh sheets (5) are arranged in the grouting reinforcement layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122462484.XU CN215948163U (en) | 2021-10-13 | 2021-10-13 | Combined pile enclosure structure for construction of subway station under low clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122462484.XU CN215948163U (en) | 2021-10-13 | 2021-10-13 | Combined pile enclosure structure for construction of subway station under low clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215948163U true CN215948163U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122462484.XU Active CN215948163U (en) | 2021-10-13 | 2021-10-13 | Combined pile enclosure structure for construction of subway station under low clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215948163U (en) |
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2021
- 2021-10-13 CN CN202122462484.XU patent/CN215948163U/en active Active
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