CN214738173U - Demolish steel hanging box auxiliary device for cofferdam - Google Patents
Demolish steel hanging box auxiliary device for cofferdam Download PDFInfo
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- CN214738173U CN214738173U CN202120790053.3U CN202120790053U CN214738173U CN 214738173 U CN214738173 U CN 214738173U CN 202120790053 U CN202120790053 U CN 202120790053U CN 214738173 U CN214738173 U CN 214738173U
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- cofferdam
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Abstract
The utility model relates to a bridge pier foundation cofferdam construction field, concretely relates to demolish steel hanging box auxiliary device for cofferdam, should demolish steel hanging box auxiliary device for cofferdam include: staple bolt, connecting plate and support frame. The anchor ear comprises an inner side embracing beam and a connecting frame, the inner side embracing beam is used for being sleeved on the pier body, the connecting frame is sleeved on the inner side embracing beam, the connecting frame comprises a connecting system and an outer side embracing beam, the outer side embracing beam is used for being connected with the cofferdam side plate, and the inner side and the outer side of the connecting system are respectively connected with the inner side embracing beam and the outer side embracing beam. The connecting plate is arranged on the outermost side of the connecting frame and used for connecting the outer side embracing beam with the cofferdam side plate; the support frame is used for setting up on the cushion cap to support inboard armful roof beam and link. The utility model discloses can solve among the prior art when demolising the cofferdam curb plate under the big complicated marine environment of wave force effect, the cofferdam curb plate does not form stable overall structure under morning and evening tides effect and wave force effect, can lead to the cofferdam to demolish the problem that the construction risk is high.
Description
Technical Field
The utility model relates to a bridge pier foundation cofferdam construction field, concretely relates to demolish steel hanging box auxiliary device for cofferdam.
Background
The cofferdam is a temporary enclosure structure constructed for constructing permanent water conservancy facilities in the water conservancy project construction. The cofferdam has the functions of preventing water and soil from entering the building position of the building so as to drain water in the cofferdam, excavate a foundation pit and build the building. The cofferdam is mainly used in hydraulic buildings in general, and the cofferdam is dismantled after being used up except for being used as a part of a formal building. The cofferdam height is higher than the highest water level that may occur during construction.
Under normal environmental conditions, the cofferdam can be directly dismantled after use.
However, in a complex marine environment with obvious tide, large height and tidal range and large wave force action, in the process of dismantling the large-scale deep water steel suspension box cofferdam in blocks, the reliable stability and integrity of the cofferdam are still ensured after the mutual connection of the side plates and the connection between the side plates and the bottom keel are released. If the connection between each unit body of the cofferdam is removed, the side plates are not reliably connected with the poured fixed structures such as pier bodies and the like, so that each side plate of the cofferdam does not form a stable integral structure under the action of tide and wave force, the cofferdam demolition construction risk is high, and the construction safety is reduced; if the cofferdam curb plate of piecemeal drops before demolising and then can cause the damage of major structure such as pile foundation or cushion cap, increases construction cost, finally causes huge economic loss for the engineering.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a demolish auxiliary device for steel hanging box cofferdam can solve among the prior art when demolising the cofferdam curb plate under the big complicated marine environment of wave force effect, the cofferdam curb plate does not form stable overall structure under morning and evening tides effect and wave force effect, can lead to the cofferdam to demolish the problem that the construction risk is high.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
the utility model provides a demolish steel hanging box auxiliary device for cofferdam, include:
the staple bolt, the staple bolt includes:
-an inboard embrace beam for nesting over the pier body;
the connecting frame is sleeved on the outer side of the inner side embracing beam and comprises a connecting system and an outer side embracing beam, the outer side embracing beam is used for being connected with the cofferdam side plate, and the inner side and the outer side of the connecting system are respectively connected with the inner side embracing beam and the outer side embracing beam;
the connecting plate is arranged on the outermost side of the connecting frame and used for connecting the outer side embracing beam with the cofferdam side plate;
and the support frame is arranged on the bearing platform to support the inner side holding beam and the connecting frame.
In some alternative embodiments, the connecting frame and the supporting frame are both truss structures.
In some optional embodiments, the inner side embracing beam comprises an upper layer hoop and a lower layer hoop, and the upper layer hoop and the lower layer hoop are connected through a vertical connecting system and an inclined connecting system.
In some alternative embodiments, the upper layer hoop and the lower layer hoop are welded by section steel, and the vertical connecting system and the inclined connecting system are steel pipes.
In some optional embodiments, the pier further comprises a plurality of cushion blocks, and the cushion blocks are used for being arranged between the inner side embracing beam and the pier body.
In some alternative embodiments, the spacer block is a wedge block.
In some optional embodiments, the connecting plate is a triangular steel plate, and two sides of the connecting plate are respectively connected with the outer side embracing beam of the connecting frame and the cofferdam side plate.
In some optional embodiments, the support frame comprises a vertical column, an inter-pile connection system and a distribution beam arranged on the vertical column and used for supporting the inner side embracing beam and the connection frame.
In some optional embodiments, the upright columns and the inter-pile connecting systems are made of steel pipes, and the diameters of the upright columns are larger than those of the inter-pile connecting systems.
In some optional embodiments, the bottom of the upright post is provided with a cover plate.
Compared with the prior art, the utility model has the advantages of: when the auxiliary device for dismantling the steel suspension box cofferdam is used, the support frame is arranged on the bearing platform, and the inner side holding beam and the connecting frame are assembled to the support frame. And the inner side embracing beam is sleeved on the pier body, and the connecting frame is connected with the cofferdam side plate through the connecting plate. And after the original connecting bolts of the cofferdam side plate are removed, the cofferdam side plate is dismantled and hoisted in sequence. This structure receives under great water force and wave force effect large-scale steel suspension box cofferdam demolishs the construction for complicated marine environment, provides one kind and can become whole and reliably be connected with the main part concrete pier shaft structure of pouring with each cell body temporary connection in cofferdam, has sufficient intensity, rigidity and holistic auxiliary device. Thereby reduce the safety risk in the cofferdam demolishs the work progress, avoid cofferdam structure to the damage of major structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic front view of an auxiliary device for dismantling a steel suspension box cofferdam in an embodiment of the present invention;
FIG. 2 is a schematic top view of an auxiliary device for removing a steel suspension box cofferdam in an embodiment of the present invention;
FIG. 3 is a schematic view illustrating the installation of a reinforcing plate according to an embodiment of the present invention;
fig. 4 is a schematic view of the installation of the cofferdam side plate and the supporting structure in the embodiment of the present invention;
FIG. 5 is a schematic view of the connection between the cofferdam side plate and the baffle in the embodiment of the present invention;
fig. 6 is the utility model discloses an embodiment cofferdam curb plate and cofferdam bracing connection schematic diagram.
In the figure: 1. an inner side holding beam; 11. an upper layer hoop; 12. a lower layer hoop; 13. a vertical connection system; 14. an oblique connection system; 2. a pier body; 3. a connecting frame; 31. a connecting system; 32. an outer side embracing beam; 4. cofferdam side plate; 41. a reinforcing plate; 42. a support structure; 43. a bottom keel; 44. cofferdam diagonal bracing; 45. a baffle plate; 5. a connecting plate; 6. a support frame; 61. a column; 62. connecting the piles; 63. a distribution beam; 7. cushion blocks; 8. a bearing platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following describes an embodiment of the auxiliary device for removing a steel suspension box cofferdam according to the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, an auxiliary device for removing a steel box cofferdam includes: staple bolt, connecting plate 5 and support frame 6.
Wherein, the staple bolt is including inboard embracing roof beam 1 and link 3, and inboard embracing roof beam 1 is used for the cover to establish on pier shaft 2, and 3 covers of link are established and are embraced the roof beam 1 outside in inboard, and link 3 embraces roof beam 32 including the connection 31 and the outside, and the roof beam 32 is embraced in the outside is used for being connected with cofferdam curb plate 4, and the inboard and the outside of connection 31 are embraced roof beam 1 and the outside respectively and are embraced the roof beam and be connected.
The connecting plate 5 is arranged on the outermost side of the connecting frame 3 and is used for connecting the outer side embracing beam 32 with the cofferdam side plate 4; the support frame 6 is arranged on the bearing platform 8 to support the inner side embracing beam 1 and the connecting frame 3.
When the auxiliary device for dismantling the steel suspension box cofferdam is used, after the construction in the cofferdam is completed, firstly, hoisting points are arranged on the side plates 4 of the cofferdam, the supporting structure 42 in the cofferdam is dismantled, the supporting frame 6 is arranged on the bearing platform 8, and the inner side embracing beam 1 and the connecting frame 3 are assembled to the supporting frame 6. The inner side embracing beam 1 is sleeved on the pier body 2, and the outer side embracing beam 32 is connected with the cofferdam side plate 4 through the connecting plate 5. After the connection between the cofferdam side plate 4 and the baffle 45 and the bottom keel 43 is removed, the connecting bolts between the inclined struts and the cofferdam side plate 4 are removed and the connecting bolts between the vertical abutted seams of the cofferdam side plate 4 are removed, the cofferdam side plate 4 is dismantled and hoisted in sequence. This structure receives under great water force and wave force effect large-scale steel suspension box cofferdam demolishs the construction for complicated marine environment, provides one kind and can become whole and reliably be connected with the main part concrete pier shaft structure of pouring with each cell body temporary connection in cofferdam, has sufficient intensity, rigidity and holistic auxiliary device. Thereby reduce the safety risk in the cofferdam demolishs the work progress, avoid cofferdam structure to the damage of major structure.
In some alternative embodiments, the connecting frame 3 and the support frame 6 are both truss structures. In this embodiment, link 3 and support frame 6 adopt truss structure can alleviate the weight of demolising steel hanging box auxiliary device for cofferdam, and truss structure construction is simple to adopt truss structure can be the part structure before the construction, transfer to assembling after in the cofferdam, avoided holistic hoist and mount construction, can improve the efficiency of construction.
In some alternative embodiments, the inner side girth 1 comprises an upper hoop 11 and a lower hoop 12, and the upper hoop 11 and the lower hoop 12 are connected by a vertical connecting system 13 and a diagonal connecting system 14. In this embodiment, adopt upper and lower two-layer auxiliary device of upper hoop 11 and lower floor's hoop 12 to upper hoop 11 and lower floor's hoop 12 all overlap on the pier body, connect upper hoop 11 and lower floor's hoop 12 through vertical connection 13 and oblique connection 14, can strengthen whole inboard and embrace the wholeness of roof beam 1, and can improve inboard stability of embracing roof beam 1.
In some alternative embodiments, the upper hoop 11 and the lower hoop 12 are welded by using section steel, and the vertical connecting system 13 and the inclined connecting system 14 are steel pipes. In this embodiment, the upper hoop 11 and the lower hoop 12 are made of HM440 × 300mm section steel, the overall height of the inner side embracing beam 1 is 5340mm, the height of the vertical connection system 13 needs to meet the overall height requirement of the inner side embracing beam 1, and the upper hoop 11 and the lower hoop 12 further include an anchoring distribution beam and a guiding distribution beam, which are respectively used for anchoring and guiding.
In some optional embodiments, the auxiliary device for removing the steel box cofferdam further comprises a plurality of cushion blocks 7, which are used for being arranged between the inner side embracing beam 1 and the pier body 2. In this embodiment, set up cushion 7 and embrace 1 and pier shaft 2 in the inboard and can improve the inboard stability of embracing roof beam 1, make it and pier shaft 2 combine closely, because 3 covers of link span are established and are embraced 1 outside in the inboard, link span 3 and cofferdam curb plate 4 are connected to the outside that link span 3 was located to connecting plate 5, can transmit the atress of cofferdam curb plate 4 to pier shaft 2 on, are favorable to improving whole auxiliary device's stability.
In some alternative embodiments, the spacer 7 is a wedge-shaped block. In the embodiment, the wedge-shaped block is inserted into a gap between the inner side embracing beam 1 and the pier body 2 but is not welded and fixed with the inner side embracing beam 1; when the cofferdam structure produces small displacement under the action of wave force, the wedge blocks drop under the action of dead weight and automatically embrace the beam 1 with the inner side to be wedged tightly, so that the problems that the cofferdam and the inner side embrace the beam 1 to produce large displacement and rock under the action of large wave force can be effectively solved. In the embodiment, the wedge-shaped block structure is manufactured into a triangular steel plate assembly welding structure with a small bottom opening and a large upper opening.
In some alternative embodiments, the connecting plate 5 is a triangular steel plate, and two sides of the connecting plate are respectively connected with the outer side embracing beam of the connecting frame 3 and the cofferdam side plate 4. In this embodiment, the triangular steel plate is a right triangle, and the two mutually perpendicular sides of the triangular steel plate are respectively connected with the outer side holding beam 32 of the connecting frame 3 and the cofferdam side plate 4 in a welding manner, so that the stability of the cofferdam side plate 4 can be improved, when the cofferdam side plate 4 is detached in blocks, the connection between the cofferdam side plate 4 and the connecting plate 5 is firstly released, and then the cofferdam side plate 4 is lifted away by the hoisting equipment.
In some alternative embodiments, the support frame 6 comprises a column 61, an inter-pile connection system 62 and a distribution beam 63 arranged above the column 61 for supporting the inner side embracing beam 1 and the connecting frame 3. In this embodiment, the distribution beams 63 of the pile top are made of 2HM440 × 300mm section steel, and are used as a direct support structure for the inner side holding beams 1 on the pier shaft 2.
In some alternative embodiments, the upright post 61 and the inter-pile connecting system 62 are made of steel pipes, and the diameter of the upright post 61 is larger than that of the inter-pile connecting system 62.
In this embodiment, the vertical column 61 is made of a steel pipe with a diameter of 600 × 10mm, the inter-pile connection system 62 is made of a steel pipe with a diameter of 273 × 6mm, and the vertical column 61 and the inter-pile connection system 62 are welded to each other through penetration.
In some alternative embodiments, the bottom of the post 61 is provided with a cover plate. In this embodiment, since the column 61 is disposed on the platform 8, the bottom of the column 61 is provided with the cover plate, so that the pressure of the whole support frame 6 on the platform 8 can be reduced, and the damage of the support frame 6 on the platform 8 can be avoided.
The utility model also provides a use method of this demolish steel hanging box auxiliary device for cofferdam, including following step:
fig. 3 a is a schematic front view of the installation of the reinforcing plate, and fig. 3B is a schematic top view of the installation of the reinforcing plate, as shown in fig. 3, S1: before the cofferdam side plate 4 is dismantled, a new hoisting point is arranged on the cofferdam side plate 4, and a reinforcing plate 41 is arranged on the cofferdam side plate 4 so as to improve the strength of the hoisting point of the cofferdam side plate 4.
S2: the support structures 42 in the cofferdam are removed and the support structures 42 in the cofferdam are arranged as shown in fig. 4.
S3: assembling a support frame 6, an inner side embracing beam 1 and a connecting frame 3 to a bearing platform 8, welding a connecting plate 5 between the connecting frame 3 and a cofferdam side plate 4, and installing a wedge block in a gap between the inner side embracing beam 1 and a railway pier body 2; as shown in fig. 1 and 2.
S4: as shown in fig. 5 and 6: and removing the connecting bolts between the baffle 45 and the bottom keel 43 of the cofferdam side plate 4, removing the connecting bolts between the cofferdam inclined strut 44 and the cofferdam side plate 4, and removing the connecting bolts between the vertical abutted seams of the cofferdam side plate 4.
S5: and dismantling and hoisting the cofferdam side plates 4 in sequence.
In addition, the following precautions are taken during construction, and the demolition construction of the cofferdam side plate 4 is performed in the weather with good wind wave conditions for more than five consecutive days according to the weather and sea conditions. The cofferdam side plate 4 to be dismantled is hooked to a lifting point by a large floating crane, the connecting bolts left by vertical splicing of the cofferdam side plate 4 to be dismantled and the adjacent cofferdam side plate 4 are removed, the connecting welding seams of the cofferdam side plate 4, the connecting plate 5 and the connecting frame 3 are cut by gas cutting, the floating crane slowly lifts the hook, and the cofferdam side plate 4 is loaded into a transportation barge after the cofferdam side plate 4 is lifted to be higher than the bridge floor of a trestle. And (5) according to the dismantling sequence, completing the dismantling construction of the rest side plates in sequence.
In addition, the main considerations when removing the cofferdam side panels 4 are as follows:
(1) when the first cofferdam side plate is dismantled, 2 jacks of 50t are adopted to remove the bonding between the bottom sealing concrete of the cofferdam side plate 4, and then the cofferdam side plate is lifted.
(2) When the cofferdam side plate 4 is dismantled, the height difference between the water head and the water level in the compartment is not more than 3m by controlling the hoisting speed or taking measures such as water leakage holes on the cofferdam side plate 4.
This demolish auxiliary device for steel hanging box cofferdam receives under great water force and the wave force effect large-scale steel hanging box cofferdam demolishs the construction for complicated marine environment, provides one kind and can become whole and reliably be connected with the pier shaft structure of pouring main body concrete with each cell block temporary connection in cofferdam, has sufficient intensity, rigidity and holistic auxiliary device. Thereby reducing the safety risk in the cofferdam demolition construction process and avoiding the damage of the cofferdam side plate 4 to the main structure.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a demolish steel hanging box auxiliary device for cofferdam which characterized in that includes:
the staple bolt, the staple bolt includes:
-an inner side embracing beam (1) for being sleeved on the pier body (2);
-a connecting frame (3) which is sleeved outside the inner side embracing beam (1), wherein the connecting frame (3) comprises a connecting system (31) and an outer side embracing beam (32), the outer side embracing beam (32) is used for being connected with a cofferdam side plate (4), and the inner side and the outer side of the connecting system (31) are respectively connected with the inner side embracing beam (1) and the outer side embracing beam;
the connecting plate (5) is arranged on the outermost side of the connecting frame (3) and is used for connecting the outer side embracing beam (32) with the cofferdam side plate (4);
and the support frame (6) is arranged on the bearing platform (8) to support the inner side embracing beam (1) and the connecting frame (3).
2. An auxiliary device for dismantling a steel suspension box cofferdam as defined in claim 1, wherein: the connecting frame (3) and the supporting frame (6) are of truss structures.
3. An auxiliary device for dismantling a steel suspension box cofferdam as defined in claim 2, wherein: the inner side embracing beam (1) comprises an upper layer hoop (11) and a lower layer hoop (12), wherein the upper layer hoop (11) and the lower layer hoop (12) are connected through a vertical connecting system (13) and an inclined connecting system (14).
4. An auxiliary device for dismantling a steel suspension box cofferdam as defined in claim 3, wherein: the upper layer hoop (11) and the lower layer hoop (12) are formed by welding profile steel, and the vertical connecting system (13) and the inclined connecting system (14) are steel pipes.
5. An auxiliary device for dismantling a steel suspension box cofferdam as claimed in claim 1 further comprising a plurality of pads (7) for being disposed between said inner side embracing beam (1) and said pier shaft (2).
6. An auxiliary device for dismantling a steel suspension box cofferdam as claimed in claim 5, wherein said spacer blocks (7) are wedge-shaped blocks.
7. An auxiliary device for dismantling a steel suspension box cofferdam as claimed in claim 1, wherein said connecting plate (5) is a triangular steel plate, two sides of which are connected to the outer side embracing beam of said connecting frame (3) and the cofferdam side plate (4), respectively.
8. An auxiliary device for dismantling a steel suspension box cofferdam according to claim 1, wherein said support frame (6) comprises uprights (61), inter-pile connection system (62) and distribution beams (63) arranged above said uprights (61) for supporting said inner side embracing beams (1) and connection frames (3).
9. An auxiliary device for dismantling a steel suspension box cofferdam according to claim 8, wherein said columns (61) and said inter-pile connection systems (62) are made of steel pipes, and the diameter of said columns (61) is larger than the diameter of said inter-pile connection systems (62).
10. An auxiliary device for dismantling a steel suspension box cofferdam as claimed in claim 8 wherein the bottom of said columns (61) are provided with a cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790053.3U CN214738173U (en) | 2021-04-16 | 2021-04-16 | Demolish steel hanging box auxiliary device for cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790053.3U CN214738173U (en) | 2021-04-16 | 2021-04-16 | Demolish steel hanging box auxiliary device for cofferdam |
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| Publication Number | Publication Date |
|---|---|
| CN214738173U true CN214738173U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120790053.3U Active CN214738173U (en) | 2021-04-16 | 2021-04-16 | Demolish steel hanging box auxiliary device for cofferdam |
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| Country | Link |
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| CN (1) | CN214738173U (en) |
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2021
- 2021-04-16 CN CN202120790053.3U patent/CN214738173U/en active Active
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