CN108222018B - Construction method for joint of double-row pile top crown beam and connecting beam - Google Patents
Construction method for joint of double-row pile top crown beam and connecting beam Download PDFInfo
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- CN108222018B CN108222018B CN201810122774.XA CN201810122774A CN108222018B CN 108222018 B CN108222018 B CN 108222018B CN 201810122774 A CN201810122774 A CN 201810122774A CN 108222018 B CN108222018 B CN 108222018B
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- pile
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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
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Abstract
The invention relates to the technical field of double-row pile retaining structures, and discloses a construction method of a joint of a double-row pile top crown beam and a connecting beam, wherein (1) a tubular pile is provided with a pile body main rib and a pile body stirrup; when the pile body main reinforcement is processed, a plurality of reinforcing main reinforcements are welded at the upper part of the pile body main reinforcement; (2) when the pipe pile is in pore-forming and concrete pouring construction, the pile body main reinforcement welded with the reinforced main reinforcement is placed into the pile hole, and the pile body concrete is poured; (3) the top of the tubular pile is close to one side of the connecting beam, a triangular pit is dug downwards along the bottom of the tubular pile, a pile body protective layer is dug, and an original welded reinforcing main rib is exposed; (4) the connecting beam is provided with a lower side surface, and the reinforcing main rib penetrates through the lower side surface of the connecting beam and extends to the inside of the connecting beam; (5) binding reinforcing stirrups in the triangular pit groove, and surrounding each reinforcing main reinforcement; (6) and integrally pouring concrete on the crown beam, the connecting beam and the haunch part and maintaining. Therefore, the supporting and stabilizing effects of the reinforced main ribs on the joints of the crown beam and the connecting beam are effectively improved.
Description
Technical Field
The invention relates to the technical field of double-row pile retaining structures, in particular to a construction method of a joint of a double-row pile top crown beam and a connecting beam.
Background
At present, in a double-pipe pile retaining structure in foundation pit retaining and protecting engineering, because of the reasons of insufficient rigidity of the double-pipe pile retaining structure or overlarge soil pressure and the like, the crown beam and the connecting beam often crack, and the retaining and protecting of a foundation pit are influenced.
At the moment, although the crown beam and the coupling beam are cracked, the pile body is intact and has no crack, and the pile body still can play a better supporting role.
In the prior art, in order to prevent the cracking of the crown beam and the connecting beam, the concrete strength grade of the crown beam and the connecting beam is increased, and meanwhile, the section size and the reinforcing bars of the crown beam and the connecting beam are greatly increased, although the cracking of the crown beam and the connecting beam is prevented, the section size and the reinforcing bars of the crown beam and the connecting beam are increased too much, so that the construction cost is greatly increased; it is not preferable from the economical point of view.
Disclosure of Invention
The invention aims to provide a construction method of a joint of a double-row pile top crown beam and a connecting beam, and aims to solve the problem that the joint of the crown beam and the connecting beam is prevented from cracking in a double-row pile retaining structure in the prior art.
The construction method of the joint of the double-row pile top crown beam and the connecting beam comprises two row-shaped tubular pile rows, wherein each tubular pile row comprises a plurality of tubular piles arranged in a row, the top of each tubular pile row is connected with the crown beam, and the crown beams of the two tubular pile rows are connected through the connecting beams;
the construction method of the joint of the crown beam and the connecting beam comprises the following steps:
(1) a pile body reinforcement cage is arranged inside the tubular pile, and comprises a plurality of pile body main reinforcements and pile body stirrups; when the pile body main rib is processed, a plurality of reinforcing main ribs are welded on the upper part of the pile body main rib, and the reinforcing main ribs and the pile body main rib can be welded on one side or two sides;
(2) when the pipe pile is constructed by forming holes and pouring concrete, the pile body main reinforcement welded with the reinforcing main reinforcement is placed into the pile hole, and then the pile body concrete is poured;
(3) the top of the tubular pile is close to one side of the connecting beam, a triangular pit is dug downwards along the bottom of the tubular pile, a pile body protective layer is dug, and an original welded reinforcing main rib is exposed;
(4) the connecting beam is provided with a lower side face arranged downwards, one end of the reinforcing main rib is welded with the pile body main rib, and the other end of the reinforcing main rib penetrates through the lower side face of the connecting beam and extends into the connecting beam;
(5) binding U-shaped reinforcing stirrups for the embedded steel bars of the tubular pile in the triangular pit groove, wherein the U-shaped reinforcing stirrups surround each reinforcing main steel bar;
(6) and integrally pouring concrete on the crown beam, the connecting beam and the haunch part and maintaining.
Furthermore, the diameter length of the reinforcing main rib is 80-120 mm.
Furthermore, the depth of the triangular pit groove is between 0.5m and 1.0m
Further, the width of the triangular pit slot is not smaller than the pile diameter of the tubular pile.
Furthermore, one end of the main reinforcing rib is connected with the pile body stirrup, and the other end of the main reinforcing rib faces the connecting beam at an angle of 40-50 degrees and is embedded into the connecting beam.
Further, the other end of the reinforcing main rib is embedded into the connecting beam at an optimal angle of 45 degrees.
Further, the reinforcing main rib is provided with an anchoring section extending into the interior of the connecting beam, and the length of the anchoring section is not less than 35 mm.
Furthermore, the two sides of the connecting beam are respectively connected with the tubular piles, and the two tubular piles are respectively constructed by the construction method.
Compared with the prior art, the construction method of the joint of the double-row pile top crown beam and the connecting beam, provided by the invention, has the advantages that the pile body main ribs and the connecting beam of the tubular pile are respectively and fixedly connected with the reinforcing main ribs, so that the supporting capability of the joint of the crown beam and the connecting beam is enhanced, and the joint of the crown beam and the connecting beam is prevented from cracking; when the main reinforcement of the pile body of the tubular pile is processed, the main reinforcement is welded with the main reinforcement of the pile body, and meanwhile, the reinforcement stirrup is added when the reinforcement is planted on the tubular pile in the later period, so that the connection between the main reinforcement and the tubular pile is firmer, and the supporting and stabilizing effects of the main reinforcement on the joints of the crown beam and the connecting beam are effectively improved; compared with the method that reinforced concrete is added at the junction of the tubular pile and the connecting beam, or the section size and the steel bar consumption of the full-section crown beam or the connecting beam are simply increased, the construction cost is greatly reduced by supporting through the reinforced main bars.
Drawings
Fig. 1 is a schematic perspective view illustrating a construction method of a joint of a double row of a crown beam and a tie beam according to an embodiment of the present invention;
fig. 2 is a schematic perspective view illustrating a construction method of a joint of a double row of pile top crown beams and a tie beam according to an embodiment of the present invention;
fig. 3 is a schematic sectional view a-a of a construction method of a joint of a double row of a pile top crown beam and a tie beam according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view B-B of a construction method of a joint of a double row of pile top crown beams and a tie beam according to an embodiment of the present invention
FIG. 5 is a schematic C-C cross-sectional view of a construction method of a joint of a double row of pile top crown beams and a tie beam according to an embodiment of the present invention
Fig. 6 is a schematic plan view illustrating a construction method of a joint of a double row of a crown beam and a tie beam according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1-6, preferred embodiments of the present invention are provided.
The construction method of the joint of the double-row pile top crown beam and the connecting beam comprises two row-shaped tubular pile rows, wherein each tubular pile row comprises a plurality of tubular piles arranged in a row shape, the top of each tubular pile row is connected with the crown beam, and the crown beams of the tubular pile rows are connected through the connecting beams;
the construction method of the joint of the crown beam and the connecting beam comprises the following steps:
(1) a pile body reinforcement cage is arranged inside the tubular pile 10, and comprises a plurality of pile body main reinforcements 11 and pile body stirrups 60; when the pile body main reinforcement 11 is processed, a plurality of reinforcing main reinforcements 40 are welded on the upper part of the pile body main reinforcement 11, and the reinforcing main reinforcements 40 and the pile body main reinforcement 11 can be welded on one side or two sides;
(2) when the tubular pile 10 is formed into a hole and concrete is poured, the pile body main reinforcement 11 welded with the reinforcing main reinforcement 40 is placed into the pile hole, and then the pile body concrete is poured;
(3) the top of the tubular pile 10 is close to one side of the connecting beam 20, a triangular pit 50 is dug downwards along the bottom of the pile, a pile body protective layer is dug open, and the originally welded reinforcing main rib 40 is exposed;
(4) the connecting beam 20 is provided with a downward arranged lower side face, one end of the main reinforcing rib 40 is welded on the pile body main rib 11, and the other end of the main reinforcing rib 40 penetrates through the lower side face of the connecting beam 20 and extends into the connecting beam 20;
(5) planting bars on the tubular pile 10 in the triangular pit 50, binding U-shaped reinforcing stirrups 70, and enabling the U-shaped reinforcing stirrups 70 to surround each reinforcing main bar 40;
(6) and integrally pouring concrete on the crown beam 30, the connecting beam 20 and the haunch part and maintaining.
In the construction method of the joint of the double-row pile top crown beam 30 and the connecting beam 20, the pile body main ribs 11 of the tubular pile 10 and the connecting beam 20 are respectively and fixedly connected with the reinforcing main ribs 40, so that the supporting capability of the joint of the crown beam 30 and the connecting beam 20 is enhanced, and the joint of the crown beam 30 and the connecting beam 20 is prevented from cracking; when the main reinforcement 11 of the pile body of the tubular pile 10 is processed, the main reinforcement 40 is welded with the main reinforcement 11 of the pile body, and meanwhile, the reinforcement stirrup 60 is added when the reinforcement is planted in the tubular pile 10 in the later period, so that the connection between the main reinforcement 40 and the tubular pile 10 is firmer, and the supporting and stabilizing effects of the main reinforcement 40 on the joint of the crown beam 30 and the tie beam 20 are effectively improved; compared with the method that reinforced concrete is added at the junction of the tubular pile 10 and the connecting beam 20, or the section size and the steel bar consumption of the full-section crown beam 30 or the connecting beam 20 are simply increased, the construction cost is greatly reduced by supporting through the reinforced main bars 40.
The diameter and the length of the main reinforcing rib 40 are 50-120 mm; thus, the construction cost is reduced while the reinforcing effect of the reinforcing main reinforcement 40 on the connecting beam 20 and the pipe pile 10 is ensured.
The depth of the over-dug triangular pit 50 is between 0.5m and 1.0m downwards along the top of the tubular pile 10; it is convenient to set the arrangement direction of the reinforcing main bead 40 and to expand the setting range of the reinforcing main bead 40.
The width of the triangular pit 50 is not less than the pile diameter of the tubular pile 10; the support strength of the main reinforcing bars 40 to the connecting beam 20 and the tubular pile 10 is ensured.
One end of the main reinforcing rib 40 is connected to the pile body stirrup 60, and the other end of the main reinforcing rib 40 extends towards the connecting beam 20 at an angle of 40-50 degrees and penetrates into the connecting beam 20; the reinforced main reinforcement 40 can support the pipe pile 10, the crown beam 30 and the connecting beam 20 more uniformly, and can support the joint of the crown beam 30 and the connecting beam 20 more comprehensively, so that the joint is not easy to crack.
The other end of the reinforcing main rib 40 extends towards the connecting beam 20 at an angle of 45 degrees and penetrates into the connecting beam 20, and the angle is the best angle when the angle is 45 degrees; thus, the joint between the crown beam 30 and the coupling beam 20 can be supported to the maximum extent, and thus, the joint is not easily cracked.
The reinforced main rib 40 is provided with an anchoring section extending into the connecting beam 20, and the length of the anchoring section is not less than 35 mm; the supporting effect of the reinforced main rib 40 is effectively prevented from being influenced due to insufficient anchoring section force.
The two sides of the connecting beam 20 are respectively connected with the tubular piles 10, and the two tubular piles 10 respectively adopt the construction process, so that the upper parts of the two tubular piles 10 and the two sides of the connecting beam 20 can be supported by the reinforcing main ribs 40, and the two sides of the connecting beam 20 and the joints of the crown beams 30 are effectively prevented from cracking in a double-row pile structure.
Furthermore, in order to facilitate installation and stability of the main reinforcement 40, one end of the main reinforcement 40 is welded to the pile body stirrup 60, so that the main reinforcement 40 and the pile body main reinforcement 11 form a whole under the action of the pile body stirrup 60, thereby enhancing the link stability of the main reinforcement 40 and ensuring that the main reinforcement 40 supports the joint of the crown beam 30 and the connecting beam 20.
By the construction method of the joint of the crown beam 30 and the connecting beam 20, the joint structure of the double row of pile top crown beams 30 and the connecting beam 20 is formed after the construction is finished.
The joint structure of the double-row pile top crown beam 30 and the connecting beam 20 comprises two rows of tubular piles 10, wherein the rows of the tubular piles 10 are arranged in a row shape, the rows of the tubular piles 10 comprise a plurality of tubular piles 10, and the tubular piles 10 are arranged in a row shape; the top of the tubular pile 10 row is connected with a crown beam 30, and the crown beams 30 of the two tubular pile 10 rows are connected through a plurality of connecting beams 20.
A pile body reinforcement cage is arranged inside the tubular pile 10, the pile body reinforcement cage comprises a plurality of pile body main reinforcements 11 and a plurality of pile body stirrups 60, the pile body reinforcement cage is connected with a plurality of reinforcing main reinforcements 40 which are arranged side by side with the pile body main reinforcements 11, and the reinforcing main reinforcements 40 are connected with the pile body stirrups 60; tubular pile 10 has the medial surface towards linking roof beam 20, and linking roof beam 20 has the downside of arranging down, is provided with the reinforcement piece between the medial surface of tubular pile 10 and the downside of linking roof beam 20, and the upper portion of strengthening the main muscle 40 is arranged towards linking roof beam 20 bending, forms the bending segment, and the bending segment passes the inside of reinforcement piece, extends to the inside of linking roof beam 20.
In the joint structure of the double-row pile top crown beam 30 and the connecting beam 20, the top parts of two rows of tubular piles 10 are connected with the crown beam 30, the crown beams 30 of the two rows of tubular piles 10 are connected through the connecting beams 20, a pile body reinforcement cage is arranged inside the tubular pile 10, the reinforcement cage is connected with a plurality of main reinforcing ribs 40, the tubular pile 10 is provided with an inner side surface facing the connecting beam 20, the connecting beam 20 is provided with a lower side surface arranged downwards, a reinforcing block is arranged between the inner side surface of the tubular pile 10 and the lower side surface of the connecting beam 20, and the main reinforcing ribs 40 penetrate through the inside of the reinforcing block and extend to the inside of the connecting beam 20; under the effect of reinforcing main reinforcement 40, the reinforcing block is supported and fixed, so that the reinforcing block supports the joint of the crown beam 30 and the connecting beam 20, and further prevents the crown beam 30 and the connecting beam 20 from cracking, in addition, reinforced concrete is respectively added at the junction of the front tubular pile 10 and the connecting beam 20 and at the junction of the rear tubular pile 10 and the connecting beam 20, compared with the situation that the section size and the steel bar consumption of the full-section crown beam 30 or the connecting beam 20 are simply increased, the engineering cost is greatly reduced
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The construction method of the joint of the double-row pile top crown beam and the connecting beam is characterized by comprising two row-shaped tubular pile rows, wherein each tubular pile row comprises a plurality of tubular piles arranged in a row shape, the top of each tubular pile row is connected with the crown beam, and the crown beams of the two tubular pile rows are connected through the connecting beams;
the construction method of the joint of the crown beam and the connecting beam comprises the following steps:
(1) a pile body reinforcement cage is arranged inside the tubular pile, and comprises a plurality of pile body main reinforcements and pile body stirrups; when the pile body main rib is processed, a plurality of reinforcing main ribs are welded on the upper part of the pile body main rib, and the reinforcing main ribs and the pile body main rib can be welded on one side or two sides;
(2) when the pipe pile is constructed by forming holes and pouring concrete, the pile body main reinforcement welded with the reinforcing main reinforcement is placed into the pile hole, and then the pile body concrete is poured;
(3) the top of the tubular pile is close to one side of the connecting beam, a triangular pit is dug downwards along the bottom of the tubular pile, a pile body protective layer is dug, and an original welded reinforcing main rib is exposed; the width of the triangular pit groove is not less than the pile diameter of the tubular pile;
(4) the connecting beam is provided with a lower side face arranged downwards, one end of the reinforcing main rib is welded with the pile body main rib, and the other end of the reinforcing main rib penetrates through the lower side face of the connecting beam and extends into the connecting beam;
(5) planting bars on the tubular pile in the triangular pit groove, binding U-shaped reinforcing stirrups, and surrounding each reinforcing main bar by the U-shaped reinforcing stirrups;
(6) and integrally pouring concrete on the crown beam, the connecting beam and the haunch part and maintaining.
2. The construction method of the joint of the double row of the pile cap beam and the tie beam as claimed in claim 1, wherein the length of the diameter of the reinforcing main bar is between 80mm and 120 mm.
3. The method for constructing a joint of a double row of coping crown beams and a tie beam according to claim 1 or 2, wherein the depth of the triangular pit is between 0.5m and 1.0 m.
4. The method for constructing a double row of pilaster crown beams and connecting beams according to claim 1 or 2, wherein one end of the reinforcing main bar is connected with the pile body stirrup, and the other end of the reinforcing main bar is oriented at 40-50 degrees to the connecting beam and embedded in the connecting beam.
5. The method of constructing a double row of pilaster crown beams and connecting beams joint as claimed in claim 4, wherein the other end of the reinforcing main bar is embedded in the connecting beam at an optimum angle of 45 degrees.
6. The method of constructing a double row of pilaster crown beams-to-tie beam joint as claimed in claim 1 or 2, wherein said reinforcing cage bar has an anchoring section extending into the interior of said tie beam, said anchoring section having a length of not less than 35 mm.
7. The construction method of the joint of the double row of the pilework crown beam and the connecting beam as claimed in claim 1 or 2, wherein the tubular piles are connected to both sides of the connecting beam respectively, and the construction method is adopted for both the tubular piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122774.XA CN108222018B (en) | 2018-02-07 | 2018-02-07 | Construction method for joint of double-row pile top crown beam and connecting beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122774.XA CN108222018B (en) | 2018-02-07 | 2018-02-07 | Construction method for joint of double-row pile top crown beam and connecting beam |
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| Publication Number | Publication Date |
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| CN108222018A CN108222018A (en) | 2018-06-29 |
| CN108222018B true CN108222018B (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810122774.XA Active CN108222018B (en) | 2018-02-07 | 2018-02-07 | Construction method for joint of double-row pile top crown beam and connecting beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112095625A (en) * | 2020-09-28 | 2020-12-18 | 武汉华中岩土工程有限责任公司 | Method for improving deformation resistance of support pile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691302A (en) * | 2012-06-03 | 2012-09-26 | 蒋凤昌 | Concrete structure for supporting deep foundation pit |
| CN204456135U (en) * | 2014-12-31 | 2015-07-08 | 上海建工一建集团有限公司 | Basement side bar for controlling deformation of deep excavation strengthens structure |
| CN205857691U (en) * | 2016-07-29 | 2017-01-04 | 华冠达工程有限公司 | A kind of basement haunch wall form supports |
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2018
- 2018-02-07 CN CN201810122774.XA patent/CN108222018B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691302A (en) * | 2012-06-03 | 2012-09-26 | 蒋凤昌 | Concrete structure for supporting deep foundation pit |
| CN204456135U (en) * | 2014-12-31 | 2015-07-08 | 上海建工一建集团有限公司 | Basement side bar for controlling deformation of deep excavation strengthens structure |
| CN205857691U (en) * | 2016-07-29 | 2017-01-04 | 华冠达工程有限公司 | A kind of basement haunch wall form supports |
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| CN108222018A (en) | 2018-06-29 |
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