CN112160325A - Composite supporting structure for enhancing rigidity of prestressed pipe pile - Google Patents
Composite supporting structure for enhancing rigidity of prestressed pipe pile Download PDFInfo
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- CN112160325A CN112160325A CN202010952127.9A CN202010952127A CN112160325A CN 112160325 A CN112160325 A CN 112160325A CN 202010952127 A CN202010952127 A CN 202010952127A CN 112160325 A CN112160325 A CN 112160325A
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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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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Abstract
The invention relates to a composite supporting structure for enhancing the rigidity of a prestressed pipe pile, and relates to the technical field of foundation pit supporting. It includes foundation ditch body, first supporting mechanism, prestressing force round tubular pile, rectangle steel reinforcement cage, baffle, concrete support piece, still install a plurality of interval arrangements and root on the both ends lateral wall of foundation ditch body and insert the intraformational vertical support bar of soil of foundation ditch body, still be connected with horizontal backup pad between every vertical support bar and the baffle, still be equipped with on the pile body lateral wall of prestressing force round tubular pile with the circular steel reinforcement cage that the pile body lateral wall is contradicted, and be located concrete placement thick liquid in the circular steel reinforcement cage, prestressing force round tubular pile comprises last prestressing pile and lower prestressing pile, goes up prestressing pile and connects through the ring flange between the prestressing pile down. The invention has the advantages of smaller concrete pouring amount and capability of meeting the strength requirement of deep and large foundation pits on the prestressed round tubular pile.
Description
Technical Field
The invention relates to the technical field of foundation pit supporting, in particular to a composite supporting structure for enhancing the rigidity of a prestressed pipe pile.
Background
The planned excavation of the foundation pit is to ensure the safety of buildings (structures) near the edge, pipes, lines and cables, and to maintain the stability of the soil body near the air in the excavation process of the foundation pit and during the use period of the foundation pit so as to ensure the construction safety. Usually, a foundation pit is supported, and temporary retaining, reinforcing, protecting and underground water controlling measures are adopted for the foundation pit.
At present, in the field of foundation pit supporting engineering, prestressed round pipe piles are used as supporting piles to support foundation pits for medium and small foundation pits under the condition of slope setting.
However, for the traditional prestressed round pipe pile used in deep and large foundation pits, the cantilever height is limited (generally less than or equal to 3 meters), and the bending resistance and shear strength of the traditional prestressed round pipe pile is low, so that the traditional prestressed round pipe pile is easy to deduce when the soil quality is poor. Therefore, in practical engineering, cast-in-place piles are usually adopted for deep and large foundation pits to replace traditional prestressed round pipe piles. This results in the need for large amounts of concrete due to the cast-in-place piles and the need to excavate mud ponds at the construction site. Therefore, compared with the traditional tubular pile, the method greatly increases the cost and is not economical; the field slurry discharge causes great pollution and is not environment-friendly; meanwhile, cast-in-place piles have high requirements on pore-forming quality, sediment thickness and timely supply of concrete, and construction progress is greatly influenced compared with the traditional prestressed round pipe piles.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the composite supporting structure for enhancing the rigidity of the prestressed tubular pile, which has the advantages of smaller concrete pouring amount and capability of meeting the strength requirement of deep and large foundation pits on the prestressed round tubular pile.
The above object of the present invention is achieved by the following technical solutions:
a composite supporting structure for enhancing the rigidity of a prestressed tubular pile comprises a foundation pit body and a first supporting mechanism arranged in the middle of the foundation pit body, wherein the first supporting mechanism comprises a plurality of prestressed round tubular piles which are arranged at intervals, a rectangular reinforcing cage sleeved on an end head plate of the prestressed round tubular pile is arranged on the first supporting mechanism, two sides of the rectangular reinforcing cage are respectively connected with a baffle, a concrete supporting block poured on the rectangular reinforcing cage is arranged between the two baffles, a plurality of vertical supporting rods which are arranged at intervals and the roots of which are inserted into a soil layer of the foundation pit body are also arranged on side walls at two ends of the foundation pit body, a transverse supporting plate is also connected between each vertical supporting rod and the baffle, a circular reinforcing cage which is butted with the side wall of the pile body is also arranged in the side wall of the pile body of the prestressed round tubular pile, and pouring slurry positioned in the circular reinforcing cage, the prestressed round pipe pile is composed of an upper prestressed pile and a lower prestressed pile, and the upper prestressed pile and the lower prestressed pile are connected through a flange plate.
By adopting the technical scheme, the concrete supporting block and the rectangular reinforcement cage sleeved on the prestressed circular tubular pile can increase the structural strength of the first supporting mechanism, the circular reinforcement cage and the concrete pouring slurry positioned in the prestressed circular tubular pile can further increase the structural strength of the prestressed circular tubular pile, and under the combined action of the baffle, the vertical supporting rod and the transverse supporting plate, the foundation pit supporting structure can further play a supporting role on the overground part, so that under the combined action of a multiple supporting structure, the foundation pit supporting structure can well complete the foundation pit supporting function and can meet the strength requirements of deep and large foundation pits on the prestressed circular tubular pile; meanwhile, when the prestressed round pipe pile is constructed on site, people only need to pour concrete into the prestressed round pipe pile and between the two baffles, and the concrete pouring amount is relatively small.
The invention in a preferred example may be further configured that the rectangular reinforcement cage includes rectangular reinforcement frames located at both sides of the pre-stressed round tubular pile, and rectangular reinforcement hoops connecting the rectangular reinforcement frames.
By adopting the technical scheme, the arrangement of the rectangular reinforcement cage is realized, and the rectangular reinforcement frame can be tightly propped against the two sides of the prestressed round pipe pile under the action of the rectangular reinforcement hoop, so that the rectangular reinforcement frame cannot be easily displaced when people fill concrete between the two baffles.
The invention may further be configured in a preferred example, that the circular reinforcement cage includes a plurality of circular reinforcement frames which are arranged at intervals on the side wall of the pile body of the prestressed circular pipe pile and have a cylindrical structure as a whole, and a circular reinforcement hoop which is installed on the outer wall of the circular reinforcement frame and connects the circular reinforcement frames into a whole.
By adopting the technical scheme, the arrangement of the circular reinforcement cage is realized, and the circular reinforcement frame can be connected into a whole by the circular reinforcement hoop, so that people can pour the prestressed circular pipe pile conveniently in the later period.
The invention may in a preferred example be further configured such that the baffles, the transverse support plates and the vertical support bars are all made of a wooden material.
By adopting the technical scheme, the baffle, the transverse supporting plate and the vertical supporting rod are made of wood materials, so that the construction cost can be reduced, and the labor intensity of workers can be reduced.
The invention can be further configured in a preferred example, the baffle is also connected with a blocking rod at the bottom of the side, which faces away from the prestressed round pipe pile.
By adopting the technical scheme, the blocking rod can tightly support the bottom of the baffle, and the baffle is prevented from deviating in the use process, so that the structural rigidity of the invention is improved.
In a preferred example, the flange includes an upper flange and a lower flange, the top of the pile body of the upper prestressed pile is provided with a plurality of upper positioning bars arranged at intervals, the upper flange is mounted on the upper prestressed pile through the upper positioning bars, the bottom of the pile body of the lower prestressed pile is provided with a plurality of lower positioning bars arranged at intervals, the lower flange is mounted on the lower prestressed pile through the lower positioning bars, and the upper flange and the lower flange are connected through bolts.
By adopting the technical scheme, the arrangement of the flange plate is realized, the upper positioning steel bars and the lower positioning steel bars can not only enhance the structural strength of the prestressed round pipe pile at the joint, but also play a role in guiding, so that workers can better assemble the upper prestressed pile and the lower prestressed pile.
In a preferred example, the invention may be further configured that a steel casing is further connected to the middle of the prestressed round pipe pile.
Through adopting above-mentioned technical scheme, the steel that is located single prestressing force round tubular pile middle part protects a section of thick bamboo and can increase prestressing force round tubular pile's ability of shearing, prevents that prestressing force round tubular pile from being inferred.
In a preferred example of the present invention, the inclined supporting rod may further be connected with a lifting rope, and the bottom of the lifting rope is connected with a counterweight.
By adopting the technical scheme, the counterweight block can downwards tension the inclined supporting rod through the lifting rope under the action of gravity, so that the inclined supporting rod can more firmly support the baffle plate, and the structural strength of the invention is improved.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the concrete supporting block and the rectangular reinforcement cage sleeved on the prestressed circular tubular pile can increase the structural strength of the first supporting mechanism, the circular reinforcement cage and the concrete pouring slurry positioned in the prestressed circular tubular pile can further increase the structural strength of the prestressed circular tubular pile, and the concrete supporting block can further play a supporting role on the overground part under the combined action of the baffle, the vertical supporting rod and the transverse supporting plate, so that the concrete supporting block can well complete the supporting function of a foundation pit under the combined action of multiple supporting structures, and can meet the strength requirement of deep and large foundation pits on the prestressed circular tubular pile.
2. When the prestressed round pipe pile is constructed on site, people only need to pour concrete into the prestressed round pipe pile and between the two baffles, and the concrete pouring amount is relatively small.
3. The invention can solve the problems that for deep and large foundation pits: the traditional prestressed pipe pile cannot meet the supporting requirement, and the cast-in-place pile replaces the traditional pipe pile, so that the cast-in-place pile needs a large amount of concrete and a mud pit needs to be excavated in a construction site, the engineering cost is greatly increased, the cast-in-place pile is not economical, and the problems of large pollution, environmental pollution and the like caused by on-site mud discharge are solved.
4. Meanwhile, the invention can effectively solve the problem that the traditional prestressed pipe pile is limited by the height of the cantilever (generally less than or equal to 3 meters), and the traditional prestressed pipe pile is a hollow pile and is easy to deduce under the condition of poor soil quality, so that the traditional prestressed pipe pile is only applied to medium and small foundation pits (shallow and small foundation pits).
5. The invention is applied to deep and large foundation pit support to replace cast-in-place piles, and avoids the problem that the cast-in-place piles influence the construction progress due to the factors of hole forming quality, sediment thickness, timely supply of concrete and the like.
Drawings
Fig. 1 is a schematic structural view of the composite supporting structure for enhancing the rigidity of the prestressed pipe pile according to the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 in a front view direction.
Fig. 3 is a schematic view of a connection structure of a circular reinforcing steel bar frame, a prestressed circular pipe pile and concrete casting grout.
Reference numerals: 1. a foundation pit body; 2. a first support mechanism; 21. prestressed round pipe piles; 211. mounting a prestressed pile; 212. a lower prestressed pile; 22. a rectangular reinforcement cage; 221. a rectangular steel bar frame; 222. a rectangular reinforcing steel hoop; 3. a baffle plate; 4. a vertical support bar; 5. a transverse support plate; 6. a circular reinforcement cage; 61. a circular reinforcement frame; 7. pouring concrete into slurry; 8. a flange plate; 81. an upper flange plate; 82. a lower flange plate; 91. a arresting bar; 92. a steel casing; 93. a lifting rope; 94. and a balancing weight.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the invention provides a composite supporting structure for enhancing the rigidity of a prestressed pipe pile, which comprises a foundation pit body 1 and a first supporting mechanism 2 installed in the middle of the foundation pit body 1, wherein the first supporting mechanism 2 comprises a plurality of prestressed circular pipe piles 21 arranged at intervals.
In actual operation, the first supporting mechanism 2 is the prior art, the circular prestressed pipe pile 21 is composed of three parts, namely an end plate, a pile body and a steel ferrule, and the pile body of the circular prestressed pipe pile 21 is of a hollow tubular structure, so that most of the circular prestressed pipe pile 21 is applied to medium and small foundation pits in actual application at present, but for large foundation pits, the existing circular prestressed pipe pile 21 is easy to break, and therefore the circular prestressed pipe pile 21 is rarely applied to the large foundation pits. The invention mainly increases the structural strength of the prestressed round pipe pile 21 on the existing prestressed round pipe pile 21, so that the prestressed round pipe pile 21 meets the use requirement of a large foundation pit.
As shown in fig. 1, the first supporting mechanism 2 is provided with a rectangular reinforcement cage 22 sleeved on the end plate of the prestressed round pipe pile 21, two sides of the rectangular reinforcement cage 22 are both connected with the baffles 3, a concrete supporting block poured on the rectangular reinforcement cage 22 is arranged between the two baffles 3, and the concrete supporting block and the rectangular reinforcement cage 22 sleeved on the prestressed round pipe pile 21 can increase the structural strength of the first supporting mechanism 2. The rectangular reinforcement cage 22 includes rectangular reinforcement frames 221 located at both sides of the prestressed round pipe piles 21, and rectangular reinforcement hoops 222 connecting the rectangular reinforcement frames 221. In actual work, the rectangular steel bar frame 221 may be formed by two rows of steel bar groups assembled into a rectangular structure, each row of steel bar group is formed by 4-8 round steel bars arranged up and down, and as an optimal scheme, steel coils may be bound to the two rows of steel bar groups.
The side walls at two ends of the foundation pit body 1 are also provided with a plurality of vertical supporting rods 4 which are arranged at intervals and the roots of which are inserted into the soil layer of the foundation pit body 1, a transverse supporting plate 5 is connected between each vertical supporting rod 4 and the baffle 3, and under the combined action of the baffle 3, the vertical supporting rods 4 and the transverse supporting plates 5, the invention can further play a supporting role on the overground part.
Preferably, the baffle 3, the transverse support plates 5 and the vertical support rods 4 are made of a wooden material. Therefore, the invention not only can reduce the construction cost of the invention, but also can reduce the labor intensity of workers. Preferably, the baffle 3 is further connected with a blocking rod 91 at the bottom of the side facing away from the prestressed round pipe pile 21. The blocking rod 91 can tightly support the bottom of the baffle 3, so that the baffle 3 is prevented from deviating in the use process, and the structural rigidity of the invention is improved. Furthermore, the inclined support rod is also connected with a lifting rope 93, and the bottom of the lifting rope 93 is connected with a balancing weight 94. The weight block 94 can pull the inclined support rod downwards through the lifting rope 93 under the action of gravity, so that the inclined support rod can more firmly support the baffle 3, and the structural strength of the invention is enhanced.
The circular steel reinforcement cage 6 which is abutted against the side wall of the pile body and the concrete pouring slurry 7 which is positioned in the circular steel reinforcement cage 6 are also arranged on the inner side wall of the pile body of the circular prestressed pipe pile 21, the circular prestressed pipe pile 21 is composed of an upper prestressed pile 211 and a lower prestressed pile 212, and the upper prestressed pile 211 and the lower prestressed pile 212 are connected through a flange plate 8. The circular reinforcement cage 6 and the concrete pouring grout 7 positioned in the prestressed circular tubular pile 21 can further increase the structural strength of the prestressed circular tubular pile 21, so that the foundation pit supporting function can be well completed by the prestressed circular tubular pile supporting method, and the strength requirements of deep and large foundation pits on the prestressed circular tubular pile 21 can be met; meanwhile, when the invention is constructed on site, people only need to pour concrete into the prestressed round pipe pile 21 and between the two baffle plates 3, and the concrete pouring amount is relatively small.
Circular steel reinforcement cage 6 includes that a plurality of intervals are arranged on the pile body lateral wall of prestressing force round pipe stake 21 and wholly be the circular reinforcement frame 61 of cylindric structure to and install on the outer wall of circular reinforcement frame 61 and connect into a holistic circular reinforcement hoop with circular reinforcement frame 61. Circular reinforcement hoop can connect into a whole with circular steel reinforcement frame 61 to make things convenient for later stage people to pour to prestressing force circular pipe pile 21.
In actual operation, the flange plate 8 includes an upper flange plate 81 and a lower flange plate 82, the top of the pile body of the upper prestressed pile 211 is provided with a plurality of upper positioning steel bars arranged at intervals, the upper flange plate 81 is installed on the upper prestressed pile 211 through the upper positioning steel bars, the bottom of the pile body of the lower prestressed pile 212 is provided with a plurality of lower positioning steel bars arranged at intervals, the lower flange plate 82 is installed on the lower prestressed pile 212 through the lower positioning steel bars, and the upper flange plate 81 and the lower flange plate 82 are connected through bolts. Go up the spacer bar and can not only strengthen the structural strength of prestressing force round tubular pile 21 in the junction with spacer bar down, can play the effect of direction moreover, make the assembly that the staff can be better go up prestressed pile 211 and prestressed pile 212 down.
Preferably, the middle part of the prestressed round pipe pile 21 is also connected with a steel casing 92. Further, a steel casing 92 is also arranged at the joint of the adjacent prestressed round pipe piles 21. The steel casing 92 can support the side of the prestressed round pipe pile 21, thereby enhancing the lateral supporting force of the present invention.
In actual work, the invention mainly adds a reinforcement cage in the traditional prestressed pipe pile, and then pours concrete into the traditional prestressed pipe pile, so that the bending strength and the shearing strength of the traditional prestressed pipe pile are increased by changing a hollow pile into a solid pile, and the concrete construction steps are as follows:
(1) the invention relates to the design of the appearance (size) of a prestressed pipe pile: the prestressed pipe pile is the same as the traditional prestressed pipe pile, and the size of the prestressed pipe pile can be lengthened and thickened on the basis of the traditional prestressed pipe pile according to the actual needs of the engineering;
(3) drilling: according to a construction drawing, firstly drilling a pipe pile depth matched with the depth of a traditional prestressed pipe pile, then drilling a hole for placing a steel casing 92 at a position matched with the steel casing 92, and finally placing the steel casing 92 and the prestressed pipe pile;
(2) manufacturing a steel reinforcement cage: selecting the type and the number of the reinforcing steel bars according to actual needs (as shown in figure 3);
(3) sleeving the manufactured reinforcement cage into the traditional prestressed pipe pile;
(3) pouring concrete: selecting concrete with proper grade to fill the reinforcement cage according to the actual engineering requirements;
(4) forming a solid pile: and after a period of standard maintenance, forming the solid pile meeting the strength requirement.
(5) Arranging a supporting structure: after the solid pile is formed, the rectangular reinforcement cage 22 is arranged, then the baffle 3, the transverse supporting plate 5 and the vertical supporting rod 4 are arranged, and finally the balancing weight 94 is arranged.
In actual work, the type selection, the construction process, the construction method and the like of the prestressed pipe pile (the invention) are the same as those of the traditional prestressed pipe pile, and the prestressed pipe pile provided by the invention is used for replacing a cast-in-place pile to be applied to deep and large foundation pits, so that the problems that a large amount of concrete is needed for cast-in-place piles, a mud pit needs to be excavated in a construction site and the like are solved, and the prestressed pipe pile adopting the design scheme is economic and environment-friendly; meanwhile, a reinforcement cage is implanted into the traditional prestressed pipe pile and concrete is adopted for filling, so that the bending strength and the shearing strength of the pipe pile are increased, and the problems that the traditional prestressed pipe pile is limited by the height of a cantilever (generally less than or equal to 3 m), and the traditional prestressed pipe pile is a hollow pile and is easy to deduce under the condition of poor soil quality, so that the traditional prestressed pipe pile is only applied to medium and small foundation pits (shallow and small foundation pits) can be effectively solved; finally, the design technology is applied to deep and large foundation pits to replace cast-in-place piles, and the problem that the construction progress is influenced by factors such as hole forming quality, sediment thickness and timely supply of concrete due to cast-in-place piles is solved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a compound supporting construction of reinforcing prestressing force tubular pile rigidity, includes foundation ditch body (1) and installs in the first supporting mechanism (2) at foundation ditch body (1) middle part, its characterized in that, first supporting mechanism (2) include a plurality of interval arrangement's prestressing force round tubular pile (21), be equipped with on first supporting mechanism (2) the suit at rectangle steel reinforcement cage (22) on the end board of prestressing force round tubular pile (21), rectangle steel reinforcement cage (22) both sides all are connected with baffle (3), be equipped with between two baffle (3) fill in concrete support piece on rectangle steel reinforcement cage (22), still install a plurality of interval arrangement and root on the both ends lateral wall of foundation ditch body (1) and insert vertical support bar (4) in the soil horizon of foundation ditch body (1), still be connected with horizontal backup pad (5) between every vertical support bar (4) and the baffle (3), still be equipped with in the pile body lateral wall of prestressing force circle tubular pile (21) with circular steel reinforcement cage (6) that the pile body lateral wall contradicts, and be located concrete placement thick liquid (7) in circular steel reinforcement cage (6), prestressing force circle tubular pile (21) comprises last prestressing force stake (211) and lower prestressing force stake (212), goes up prestressing force stake (211) and connects through ring flange (8) between prestressing force stake (212) down.
2. The composite support structure for reinforcing the rigidity of a prestressed pipe pile according to claim 1, wherein the rectangular reinforcement cage (22) includes rectangular reinforcement frames (221) located at both sides of the prestressed circular pipe pile (21), and rectangular reinforcement hoops (222) connecting the rectangular reinforcement frames (221).
3. The composite supporting structure for reinforcing the rigidity of a prestressed tubular pile according to claim 2, wherein the circular reinforcement cage (6) comprises a plurality of circular reinforcement frames (61) which are arranged on the side wall of the pile body of the prestressed circular tubular pile (21) at intervals and have a cylindrical structure as a whole, and circular reinforcement hoops which are installed on the outer wall of the circular reinforcement frames (61) and connect the circular reinforcement frames (61) into a whole.
4. The composite supporting structure for reinforcing the rigidity of a prestressed pipe pile according to claim 1, 2 or 3, wherein the baffle plate (3), the transverse supporting plate (5) and the vertical supporting rod (4) are all made of a wooden material.
5. The composite supporting structure for reinforcing the rigidity of the prestressed tubular pile according to claim 4, wherein the baffle plate (3) is further connected with a blocking rod (91) at the bottom of the side away from the prestressed round tubular pile (21).
6. The composite supporting structure for enhancing the rigidity of the prestressed pipe pile according to claim 5, wherein the flange (8) comprises an upper flange (81) and a lower flange (82), the top of the pile body of the upper prestressed pile (211) is provided with a plurality of upper positioning steel bars arranged at intervals, the upper flange (81) is installed on the upper prestressed pile (211) through the upper positioning steel bars, the bottom of the pile body of the lower prestressed pile (212) is provided with a plurality of lower positioning steel bars arranged at intervals, the lower flange (82) is installed on the lower prestressed pile (212) through the lower positioning steel bars, and the upper flange (81) is connected with the lower flange (82) through bolts.
7. The composite supporting structure for reinforcing the rigidity of the prestressed tubular pile according to claim 6, wherein a steel casing (92) is further connected to the middle of the prestressed round tubular pile (21).
8. The composite supporting structure for enhancing the rigidity of the prestressed pipe pile according to claim 7, wherein a lifting rope (93) is further connected to the inclined supporting rod, and a counterweight (94) is connected to the bottom of the lifting rope (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952127.9A CN112160325A (en) | 2020-09-11 | 2020-09-11 | Composite supporting structure for enhancing rigidity of prestressed pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952127.9A CN112160325A (en) | 2020-09-11 | 2020-09-11 | Composite supporting structure for enhancing rigidity of prestressed pipe pile |
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| CN202010952127.9A Pending CN112160325A (en) | 2020-09-11 | 2020-09-11 | Composite supporting structure for enhancing rigidity of prestressed pipe pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070997A (en) * | 2021-04-27 | 2021-07-06 | 北京中岩大地科技股份有限公司 | Method for vertically manufacturing tubular pile |
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| CN209099369U (en) * | 2018-09-18 | 2019-07-12 | 浙江海北勘察股份有限公司 | A kind of internal support of foundation pit device |
| CN210798293U (en) * | 2019-08-14 | 2020-06-19 | 中交二航局第四工程有限公司 | Construction structure for supporting beam |
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- 2020-09-11 CN CN202010952127.9A patent/CN112160325A/en active Pending
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| CN209099369U (en) * | 2018-09-18 | 2019-07-12 | 浙江海北勘察股份有限公司 | A kind of internal support of foundation pit device |
| CN210798293U (en) * | 2019-08-14 | 2020-06-19 | 中交二航局第四工程有限公司 | Construction structure for supporting beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113070997A (en) * | 2021-04-27 | 2021-07-06 | 北京中岩大地科技股份有限公司 | Method for vertically manufacturing tubular pile |
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Application publication date: 20210101 |