CN214169118U - Support deep basal pit cofferdam structure in large-scale combination hasp pile - Google Patents
Support deep basal pit cofferdam structure in large-scale combination hasp pile Download PDFInfo
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- CN214169118U CN214169118U CN202023298624.6U CN202023298624U CN214169118U CN 214169118 U CN214169118 U CN 214169118U CN 202023298624 U CN202023298624 U CN 202023298624U CN 214169118 U CN214169118 U CN 214169118U
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Abstract
The utility model discloses an inner support deep foundation pit cofferdam structure of a large-scale combined lock pile, which comprises a cofferdam main body, wherein the cofferdam main body is formed by mutually locking and closing a plurality of lock steel pipe piles, a section steel bracket is welded at the top of the inner wall of the cofferdam main body, the top of the section steel bracket is connected with an enclosing purlin, first support steel pipes are evenly welded between the enclosing purlins, second support steel pipes are vertically welded between the middle parts of the first support steel pipes, and the second support steel pipes positioned at one side of the enclosing purlin are vertically welded on the enclosing purlin, the utility model can mutually and tightly lock and connect the steel pipe pile main bodies through the matching of a positioning connecting steel pipe and a lock I-shaped steel, and the lock I-shaped steel can be accurately and tightly inserted in the positioning connecting steel pipe through the arranged limiting ribs, so that the connection is more tight and firm, and the lock deviation of the lock steel pipe piles is prevented, the water stopping effect is improved, the supporting can be provided for the enclosing purlin through the arranged profile steel bracket, and the stability of the overall structure is improved.
Description
Technical Field
The utility model relates to a foundation ditch engineering construction technical field specifically is a support deep basal pit cofferdam structure in large-scale combination hasp stake.
Background
The foundation pit engineering mainly includes foundation pit supporting system design and construction and earthwork excavation, and is a system engineering with strong comprehensiveness, in the prior art, in order to construct a bridge substructure, a temporary enclosure structure is constructed, which has the function of preventing water and soil from entering the construction position of the bridge substructure so as to drain water in a cofferdam and excavate a deep foundation pit, the construction of the construction substructure is generally mainly used for the construction of the underwater bridge substructure, except for being a part of a formal building, the cofferdam is generally dismantled after being used up, the main method is that a guide frame is arranged through a pile foundation steel casing to insert and drive a bearing platform combined lock catch steel pipe pile, water is pumped, meanwhile, an enclosing purlin and a cross brace are arranged from top to bottom according to the design position, bottom concrete is poured, water is pumped to the design elevation, a pile head is chiseled, and the bearing platform construction operation is carried out, while the connection of the combined lock catch steel pipe pile of the existing deep foundation pit cofferdam structure is not tight and firm enough, hasp deviation can appear when mutual hasp is connected, leads to the stagnant water effect to descend, causes the infiltration, and there is still the defect in the atress condition of the interior support of cofferdam structure in addition, owing to receive the influence of self gravity for support to cofferdam inside is not powerful enough, and holistic stability is relatively poor, consequently, needs design a support deep basal pit cofferdam structure in large-scale combination hasp stake, in order to solve current problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an interior deep basal pit cofferdam structure of supporting of large-scale combination hasp pile, cooperation through positioning connection steel pipe and hasp I-steel, can be with the mutual inseparable hasp of steel-pipe pile main part and couple together, stiffening rib through setting up, can strengthen the connection of positioning connection steel pipe and steel-pipe pile main part, spacing rib through setting up, make the hasp I-steel can accurately closely peg graft in positioning connection steel pipe, make the connection inseparabler firm, prevent that hasp steel-pipe pile from appearing the hasp deviation, the stagnant water effect has been improved, shaped steel bracket through setting up, can provide the support for enclosing the purlin, reduce the influence that receives gravity of enclosing purlin and interior support, make the inside support of cofferdam more firm, overall structure's stability has been improved, can effectively solve the problem in the background art.
In order to solve the technical problem, the utility model provides a following technical scheme:
a cofferdam structure for supporting a deep foundation pit in a large combined lock catch pile comprises a cofferdam main body, wherein the cofferdam main body is formed by mutually locking and closing a plurality of lock catch steel pipe piles, a section steel bracket is welded at the top of the inner wall of the cofferdam main body, enclosing purlins are connected to the tops of the section steel brackets, first supporting steel pipes are uniformly welded among the enclosing purlins, second supporting steel pipes are vertically welded among the middle parts of the first supporting steel pipes, the second supporting steel pipes positioned on one sides of the enclosing purlins are vertically welded on the enclosing purlins, stiffening plates are uniformly welded at corners connected among the enclosing purlins, the first supporting steel pipes and the second supporting steel pipes, and a concrete back cover and a concrete cushion are respectively poured at the bottom and the inner wall of an inner cavity of the cofferdam main body;
the lock catch steel pipe pile comprises a steel pipe pile body, wherein the steel pipe pile body is symmetrically welded with a positioning connection steel pipe and lock catch I-shaped steel at two sides, stiffening ribs are symmetrically connected between the steel pipe pile body and the positioning connection steel pipe, limiting ribs are welded at two sides of the waist of the lock catch I-shaped steel, and lock catch connecting grooves matched with the lock catch I-shaped steel are formed in the positioning connection steel pipe.
Further, the leg width that the internal diameter of location connection steel pipe is greater than the hasp I-steel, just location connection steel pipe and hasp I-steel symmetry are located the same diameter line of tubular pile main part.
Furthermore, adjacent steel pipe pile bodies are vertically inserted into the lock catch connecting grooves on the positioning connecting steel pipes through lock catch I-shaped steel and are mutually locked and connected.
Furthermore, the limiting rib is in the shape of an arc plate and is sleeved on the inner side of the positioning connecting steel pipe.
Furthermore, the width of shaped steel bracket is greater than the width of enclosing the purlin, the welding has the reinforcement bracing piece between shaped steel bracket bottom and the steel-pipe pile main part.
Furthermore, the enclosing purlin is of a profile steel structure, and a connecting steel plate is welded between the enclosing purlin and the steel pipe pile main body.
Furthermore, the first supporting steel pipe, the second supporting steel pipe and the enclosing purlin are welded through tongue-and-groove joints, and the joint of the top of the enclosing purlin, the first supporting steel pipe and the second supporting steel pipe is connected with a fixing steel plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses simple structure, it is reliable and stable, bearing structure is firm, through the cooperation of positioning connection steel pipe and hasp I-steel, can be with each other closely hasp connection of steel-pipe pile main part, through the stiffening rib that sets up, can strengthen positioning connection steel pipe and steel-pipe pile main part's connection, through the spacing rib that sets up, make the hasp I-steel can accurately closely peg graft in positioning connection steel pipe, make the connection inseparabler firm, prevent that hasp deviation from appearing in the hasp steel-pipe pile, improved stagnant water effect;
2. the concrete cushion layer is poured on the inner wall of the cofferdam main body, so that the strength of the inner wall of the cofferdam main body can be enhanced, the leakage of the inner surface of the cofferdam is prevented, the occurrence of a spring eye phenomenon is avoided, and the integral water stopping effect of the cofferdam is further improved;
3. through welding at cofferdam main part inner wall top has the shaped steel bracket, can provide the support for enclosing the purlin, reduce the influence that receives gravity of enclosing purlin and interior support, support the steel pipe through the first support steel pipe that sets up and second, can increase the support performance who encloses the purlin for the inside support of cofferdam is more firm, has improved overall structure's stability.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the locking steel pipe pile of the present invention;
FIG. 3 is a schematic view of the overall vertical cross-section of the present invention;
FIG. 4 is a schematic structural view of the connection between the first support steel pipe and the second support steel pipe of the present invention;
reference numbers in the figures: 1. a cofferdam body; 2. locking the steel pipe pile; 21. a steel pipe pile body; 22. positioning the connecting steel pipe; 221. a stiffening rib; 23. locking I-shaped steel; 231. a spacing rib; 24. a lock catch connecting groove; 3. a section steel bracket; 31. reinforcing the supporting rod; 4. enclosing purlins; 41. connecting steel plates; 42. fixing a steel plate; 5. a first support steel pipe; 6. a second support steel pipe; 7. a stiffening plate; 8. sealing the bottom by concrete; 9. a concrete pad.
Detailed Description
The technical solution of the present invention will be described in detail and fully with reference to the accompanying drawings, wherein the embodiments are only for describing a part of the invention, but not for describing the whole invention.
As shown in fig. 1-4, the utility model provides a technical solution: a cofferdam structure of a deep foundation pit supported in a large combined lock catch pile comprises a cofferdam main body 1, the cofferdam main body 1 is formed by mutually locking and closing a plurality of lock catch steel pipe piles 2, a section steel bracket 3 is welded on the top of the inner wall of the cofferdam main body 1, an enclosing purlin 4 is connected on the top of the section steel bracket 3 and can stably support the enclosing purlin 4, first supporting steel pipes 5 are evenly welded among the enclosing purlins 4, second supporting steel pipes 6 are vertically welded among the middle parts of the first supporting steel pipes 5, and the second supporting steel pipe 6 positioned at one side of the purlin 4 is vertically welded on the purlin 4, so that the supporting capability of the purlin 4 is improved, stiffening plates 7 are uniformly welded at the corners connected among the purlin 4, the first supporting steel pipe 5 and the second supporting steel pipe 6, the structure is more stable and firm, the concrete back cover 8 and the concrete cushion 9 are respectively poured on the bottom and the inner wall of the inner cavity of the cofferdam main body 1, and the strength of the bottom and the inner wall of the cofferdam main body 1 can be enhanced;
wherein, as shown in fig. 2, hasp steel-pipe pile 2 includes steel-pipe pile main part 21, steel-pipe pile main part 21 bilateral symmetry welding has positioning connection steel pipe 22 and hasp I-steel 23, symmetrical connection has stiffening rib 221 between steel-pipe pile main part 21 and the positioning connection steel pipe 22, spacing rib 231 has all been welded to the waist both sides of hasp I-steel 23, positioning connection steel pipe 22 seted up with hasp I-steel 23 assorted hasp spread groove 24, make hasp I-steel 23 can accurately closely peg graft in positioning connection steel pipe 22, prevent that hasp steel-pipe pile 2 from appearing the hasp deviation, make to connect inseparabler firmly.
In this embodiment, as shown in fig. 2, the inner diameter of the positioning and connecting steel tube 22 is larger than the leg width of the locking i-beam 23, and the positioning and connecting steel tube 22 and the locking i-beam 23 are symmetrically located on the same diameter line of the tubular pile main body, so that the connection is facilitated.
In this embodiment, as shown in fig. 1 and fig. 2, the adjacent steel pipe pile main bodies 21 are vertically inserted into the locking connecting grooves 24 of the positioning connecting steel pipe 22 through the locking i-shaped steel 23 to be locked and connected with each other, the limiting rib 231 is in the shape of an arc plate, and the limiting rib 231 is sleeved on the inner side of the positioning connecting steel pipe 22 to play a limiting role, so that the locking i-shaped steel 23 can be accurately and tightly inserted into the positioning connecting steel pipe 22, and the connection is tighter and firmer.
In this embodiment, as shown in fig. 1 and fig. 3, the width of shaped steel bracket 3 is greater than the width of enclosing purlin 4, the welding has the reinforcing support pole 31 between shaped steel bracket 3 bottom and steel pipe pile main part 21, can shaped steel bracket 3's support strength, enclose purlin 4 and adopt the shaped steel structure, and enclose and weld connecting steel plate 41 between purlin 4 and the steel pipe pile main part 21, can provide the support for enclosing purlin 4, reduce the influence that receives gravity of enclosing purlin 4 and interior support, the support performance of enclosing purlin 4 has been increased.
In this embodiment, as shown in fig. 1, 3 and 4, the first support steel pipe 5, the second support steel pipe 6 and the surrounding purlin 4 are welded by a tongue-and-groove joint, and the joint between the top of the surrounding purlin 4 and the first support steel pipe 5 and the second support steel pipe 6 is connected with the fixing steel plate 42, so that the joints are welded more stably and firmly, and the overall structural strength is improved.
The utility model discloses improve in: the cofferdam structure for supporting the deep foundation pit in the large-scale combined lock catch pile can tightly lock and connect the steel pipe pile main bodies 21 through the matching of the positioning connection steel pipe 22 and the lock catch I-shaped steel 23 when in use, can enhance the connection between the positioning connection steel pipe 22 and the steel pipe pile main body 21 through the arranged stiffening rib 221, can enable the lock catch I-shaped steel 23 to be accurately and tightly inserted in the positioning connection steel pipe 22 through the arranged limiting rib 231, enables the connection to be tighter and firmer, prevents lock catch deviation of the lock catch steel pipe pile 2, improves water stop effect, can enhance the strength of the inner wall and the bottom of the cofferdam main body 1 through pouring the concrete back cover 8 and the concrete cushion 9 on the inner wall and the bottom of the cofferdam main body 1, prevents the inner surface of the cofferdam from leaking, avoids the occurrence of spring hole phenomenon, further improves the water stop effect of the whole cofferdam, and is characterized in that the section steel bracket 3 is welded on the top of the inner wall of the cofferdam main body 1, can provide the support for enclosing purlin 4, reduce the influence that receives gravity of enclosing purlin 4 and interior support, support steel pipe 6 through first support steel pipe 5 and the second that sets up, can increase the support performance who encloses purlin 4 for the support of cofferdam inside is more firm, has improved overall structure's stability.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. The utility model provides a support deep basal pit cofferdam structure in large-scale combination hasp pile, includes cofferdam main part (1), its characterized in that: the cofferdam comprises a cofferdam main body (1) and is formed by mutually locking and folding a plurality of locking steel pipe piles (2), a section steel bracket (3) is welded at the top of the inner wall of the cofferdam main body (1), enclosing purlins (4) are connected to the tops of the section steel brackets (3), first supporting steel pipes (5) are uniformly welded among the enclosing purlins (4), second supporting steel pipes (6) are vertically welded among the middle parts of the first supporting steel pipes (5), the second supporting steel pipes (6) positioned on one sides of the enclosing purlins (4) are vertically welded on the enclosing purlins (4), stiffening plates (7) are uniformly welded at corners connected among the enclosing purlins (4), the first supporting steel pipes (5) and the second supporting steel pipes (6), and a concrete sealing bottom (8) and a concrete cushion layer (9) are respectively poured at the bottom and the inner wall of the inner cavity of the cofferdam main body (1);
hasp steel-pipe pile (2) include steel-pipe pile main part (21), steel-pipe pile main part (21) bilateral symmetry welding has location connection steel pipe (22) and hasp I-steel (23), symmetrical connection has stiffening rib (221) between steel-pipe pile main part (21) and location connection steel pipe (22), spacing rib (231) have all been welded to the waist both sides of hasp I-steel (23), location connection steel pipe (22) seted up with hasp I-steel (23) assorted hasp spread groove (24).
2. The cofferdam structure of the deep foundation pit in the large combined lock catch pile, which is characterized in that: the leg width that the internal diameter of location connection steel pipe (22) is greater than hasp I-steel (23), just location connection steel pipe (22) and hasp I-steel (23) symmetry are located the same diameter line of tubular pile main part.
3. The cofferdam structure of the deep foundation pit in the large combined lock catch pile, which is characterized in that: the adjacent steel pipe pile main bodies (21) are vertically inserted into the lock catch connecting grooves (24) on the positioning connecting steel pipes (22) through lock catch I-shaped steel (23) and are mutually locked and connected.
4. The cofferdam structure of the deep foundation pit in the large combined lock catch pile, which is characterized in that: the limiting rib (231) is in the shape of an arc plate, and the limiting rib (231) is sleeved on the inner side of the positioning connecting steel pipe (22).
5. The cofferdam structure of the deep foundation pit in the large combined lock catch pile, which is characterized in that: the width of the section steel bracket (3) is larger than that of the surrounding purlin (4), and a reinforcing support rod (31) is welded between the bottom of the section steel bracket (3) and the steel pipe pile main body (21).
6. The cofferdam structure of the deep foundation pit in the large combined lock catch pile, which is characterized in that: enclose purlin (4) and adopt the shaped steel structure, just it has connecting steel board (41) to enclose between purlin (4) and steel-pipe pile main part (21).
7. The cofferdam structure of the deep foundation pit in the large combined lock catch pile, which is characterized in that: the first supporting steel pipe (5), the second supporting steel pipe (6) and the enclosing purlin (4) are welded through grooves and tongues, and the joint of the top of the enclosing purlin (4) and the first supporting steel pipe (5) and the second supporting steel pipe (6) is connected with a fixed steel plate (42).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023298624.6U CN214169118U (en) | 2020-12-31 | 2020-12-31 | Support deep basal pit cofferdam structure in large-scale combination hasp pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023298624.6U CN214169118U (en) | 2020-12-31 | 2020-12-31 | Support deep basal pit cofferdam structure in large-scale combination hasp pile |
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| CN214169118U true CN214169118U (en) | 2021-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387364A (en) * | 2022-07-29 | 2022-11-25 | 中交路桥建设有限公司 | Construction method of deep water rock-socketed combined light cofferdam |
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2020
- 2020-12-31 CN CN202023298624.6U patent/CN214169118U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387364A (en) * | 2022-07-29 | 2022-11-25 | 中交路桥建设有限公司 | Construction method of deep water rock-socketed combined light cofferdam |
| CN115387364B (en) * | 2022-07-29 | 2024-05-14 | 中交路桥建设有限公司 | Deep water rock-embedded combined light cofferdam construction method |
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