CN215105444U - Take prefabricated assembled open caisson structure of arrow-shaped ribbed wall - Google Patents
Take prefabricated assembled open caisson structure of arrow-shaped ribbed wall Download PDFInfo
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- CN215105444U CN215105444U CN202121003321.9U CN202121003321U CN215105444U CN 215105444 U CN215105444 U CN 215105444U CN 202121003321 U CN202121003321 U CN 202121003321U CN 215105444 U CN215105444 U CN 215105444U
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Abstract
The utility model relates to a take prefabricated assembled open caisson structure of arrow-shaped ribbed wall, including pit shaft, sword foot, outside ribbed wall, a plurality of outside ribbed wall settings are at the surface of pit shaft, and the sword foot is located the below of outside ribbed wall, and outside ribbed wall is arrow-shaped ribbed wall, and the cross section of arrow-shaped ribbed wall is the radial outside arrow point shape of direction along the pit shaft cross section, arrow tail end and the pit shaft outer wall fixed connection of arrow-shaped ribbed wall, and the arrow point end of arrow-shaped ribbed wall is kept away from the pit shaft and is stretched out outwards. The utility model provides a take prefabricated assembled open caisson structure of arrow-shaped ribbed wall to the rigidity on open caisson basis is increased to more economical and reasonable's mode belongs to geotechnical engineering foundation construction field.
Description
Technical Field
The utility model relates to a geotechnical engineering foundation construction field, concretely relates to take prefabricated assembled open caisson structure of arrow-shaped ribbed wall.
Background
The open caisson is a hollow shaft tubular structure which is prefabricated on the ground in advance through a prefabricated field or formed by casting in situ, and is used as the foundation of a large-scale structure after earth is dug in the open caisson, the earth is sunk to a designed elevation after overcoming the frictional resistance of a well wall by the aid of the gravity of the open caisson and then is used as the foundation of the large-scale structure after the open caisson is subjected to bottom sealing of concrete and top sealing of the well cover. The open caisson foundation has the advantages of good integrity, large rigidity, low sinking depth, less used machinery, simplicity in operation, easiness in construction and the like, and can be applied to deep sea buildings, high-rise buildings, mining engineering, municipal engineering and the like with high requirements on foundation rigidity and integrity.
In the prior art, a sunk well generally adopts a hollow cylinder structure, and in order to meet the rigidity requirement of the sunk well, technical means of increasing the section size of the sunk well and increasing the wall thickness of a shaft are adopted; in order to meet the design requirement of higher rigidity, a few open caissons are provided with a straight reinforcing rib outside the open caissons. In order to meet the rigidity requirement, the cost is high and the construction time is long.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model aims at: the prefabricated open caisson structure with the arrow-shaped rib walls is provided, and the rigidity of the open caisson foundation is increased in a more economical and reasonable mode.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a take prefabricated assembled open caisson structure of arrow-shaped ribbed wall, includes pit shaft, sword foot, outside ribbed wall, and a plurality of outside ribbed wall set up the surface at the pit shaft, and the sword foot is located the below of outside ribbed wall, and outside ribbed wall is arrow-shaped ribbed wall, and arrow-shaped ribbed wall's cross section is the arrow shape that the direction outwards extends from pit shaft cross section center, and arrow-shaped ribbed wall's radial root and pit shaft outer wall fixed connection, the anterior portion of arrow-shaped ribbed wall is kept away from the pit shaft and is outwards stretched out. After the structure is adopted, the vertical bending rigidity of the open caisson foundation can be effectively increased by arranging the arrow-shaped rib walls outside the open caisson, and the rigidity and the stability of the open caisson structure are improved by adding the arrow-shaped rib walls under the condition that the wall thickness of the open caisson is not changed and the section size is increased.
As a preference, the arrow-shaped rib wall includes a wing wall and a web wall; an arrow rib wall includes two wing walls and a belly wall, and the belly wall sets up along radial, and the inner of belly wall and the outer wall fixed connection of arrow rib wall, the outer end of belly wall and the tip fixed connection of two wing walls, two wing walls are the fixed connection of falling V-arrangement, and the contained angle that two wing walls formed is 100 plus 135 degrees, and the belly wall is located the angular bisector of the contained angle that two wing walls formed. After the structure is adopted, the combination of the wing walls and the web walls can effectively increase the contact area between the open caisson structure and the soil body under the condition of adopting mineshafts with the same specification, so that the open caisson structure is more stable in the soil body.
Preferably, the open caisson structure further comprises an intercostal cross beam, the intercostal cross beam is horizontally arranged between two adjacent arrow-shaped rib walls, one end of the intercostal cross beam is fixedly connected with one of the wing walls of one arrow-shaped rib wall, and the other end of the intercostal cross beam is fixedly connected with the wing walls which are distributed adjacently in the adjacent arrow-shaped rib wall. After the structure is adopted, the cross beams between the ribs are arranged on the outer sides of the two wings of the arrow-shaped rib wall, so that the adjacent arrow-shaped rib walls can be transversely connected, and the integrity and the rigidity of the open caisson foundation are improved.
Preferably, an intercostal cross beam is arranged between every two adjacent arrow-shaped rib walls, and at least one intercostal cross beam is arranged between every two adjacent arrow-shaped rib walls from top to bottom in sequence. After the structure is adopted, the integrity and the rigidity of the open caisson foundation can be further increased by arranging as many cross beams between the ribs as possible under a certain open caisson height.
Preferably, the open caisson containing the shaft, the blade foot and the arrow-shaped rib wall is constructed in a concrete integrally cast structure. After adopting this kind of structure, the intensity of open caisson structure is further improved, and the stability of open caisson structure is further strengthened.
Preferably, the open caisson structure is a segmented splicing structure, and the open caisson structure comprises a plurality of prefabricated open caisson structure units which are spliced in sequence from bottom to top. After adopting this kind of structure, the time limit for a project of open caisson preparation can further shorten, more conveniently carries out the equipment work of open caisson on the ground simultaneously.
Preferably, the shaft is provided with a plurality of arrow-shaped rib walls which are uniformly distributed on the outer surface of the shaft. After the structure is adopted, more arrow-shaped rib walls can double the rigidity and stability of the open caisson foundation under the same condition.
Preferably, the upper end of the arrow-shaped rib wall is flush with the top of the shaft, the lower end of the arrow-shaped rib wall is fixedly connected with the upper end of the blade foot, and the lower end of the blade foot is flush with the bottom of the shaft. After the structure is adopted, under the same condition, the contact area between the arrow-shaped rib wall and the soil body outside the open caisson can be increased as much as possible, and the rigidity and the stability of the open caisson foundation are further improved.
Preferably, the cross section of the upper end of the cutting edge foot is consistent with that of the arrow-shaped rib wall, the cross section of the lower end of the cutting edge foot is a straight line along the radius of the section of the shaft, and the cross section of the cutting edge foot is narrowed from top to bottom. After the structure is adopted, the blade legs which are wide and narrow from top to bottom can reduce the soil resistance when the open caisson sinks, and the sinking speed of the open caisson is accelerated.
Preferably, the cross section of the shaft is circular ring shape, and the shaft is vertical cylindrical structure. With this structure, in the process of sinking the open caisson to the designed elevation, earth and stones in the open caisson can be dug out through the hollow structure to form an open caisson structure with a hollow interior.
In general, the utility model has the advantages as follows:
1. the vertical bending rigidity of the open caisson foundation can be effectively increased by arranging the arrow-shaped rib walls outside the open caisson, and the rigidity and the stability of the open caisson foundation are improved by adding the arrow-shaped rib walls under the condition that the wall thickness of the open caisson is not changed and the section size is increased.
2. When the open caisson sinks to the designed elevation, the soil and the stones in the open caisson can be dug out through the hollow structure of the shaft, so that the descending speed of the open caisson is accelerated.
3. Under the same conditions, more arrow-shaped rib walls can double the rigidity and stability of the open caisson foundation.
4. The blade legs which are wide and narrow from top to bottom can reduce the soil resistance when the open caisson sinks, and increase the sinking rate of the open caisson.
5. Under the same condition, the contact area between the arrow-shaped rib wall and the soil outside the open caisson can be increased, and the rigidity and the stability of the open caisson foundation are further improved.
6. The cross beams between the ribs are arranged on the outer sides of the two wings of the arrow-shaped rib wall, so that the adjacent arrow-shaped rib walls can be transversely connected, and the integrity and the rigidity of the open caisson foundation are improved.
7. The construction period of the open caisson can be further shortened, and meanwhile, the assembly work of the open caisson on the ground is more convenient.
Drawings
Fig. 1 is a schematic structural diagram of a caisson.
Fig. 2 is a schematic sectional view of the open caisson.
Fig. 3 is a schematic diagram of a caisson structure with beams of the caisson.
Detailed Description
The utility model discloses in the attached drawing: 1. shaft, 2, arrow rib wall, 3, blade foot, 4, intercostal beam, 5, wing wall, 6 and web wall.
The present invention will be described in further detail with reference to specific embodiments.
The utility model provides a take prefabricated assembled open caisson structure of arrow-shaped ribbed wall, includes pit shaft, sword foot, outside ribbed wall, and sword foot and outside ribbed wall all set up on the surface of pit shaft, and outside ribbed wall is arrow-shaped ribbed wall, and arrow-shaped ribbed wall's cross section is the outside arrow shape of direction along pit shaft cross section radius, arrow tail end and the pit shaft outer wall fixed connection of arrow-shaped ribbed wall, and the arrow head end of arrow-shaped ribbed wall is kept away from the pit shaft and is outwards stretched out.
The arrow-shaped rib wall comprises a wing wall and a web wall; the arrow-shaped rib wall comprises two wing walls and a web wall, the two wing walls and the web wall are distributed in an arrow shape, the two wing walls are arranged at the arrow end, the web wall is arranged at the arrow tail end along the radius direction of the cross section of the shaft, the two wing walls are fixedly connected in an inverted V shape, the included angle formed by the two wing walls is 135 degrees, one end of the web wall is fixedly connected at the joint of the two wing walls, the other end of the web wall is fixedly connected on the outer surface of the shaft, and the web wall is positioned on the angular bisector of the included angle formed by the two wing walls.
The open caisson structure further comprises an intercostal cross beam which is horizontally arranged between two adjacent arrow-shaped rib walls, one end of the intercostal cross beam is fixedly connected with one of the web walls of one arrow-shaped rib wall, and the other end of the intercostal cross beam is fixedly connected with the web walls which are adjacently distributed in the adjacent arrow-shaped rib walls. All be provided with intercostal crossbeam between every adjacent arrow-shaped rib wall, and from the top down has set gradually the intercostal crossbeam of no less than one between two arrow-shaped rib walls.
The open caisson structure comprising the shaft, the blade foot and the arrow-shaped rib wall is an integrated structure body integrally cast and formed by concrete. The open caisson structure adopts a sectional design, and the whole open caisson structure is divided into a plurality of sections; the open caisson structure adopts the design of sectional prefabrication and splicing installation.
The shaft is provided with a plurality of arrow-shaped rib walls which are uniformly distributed on the outer surface of the shaft. The upper end of the arrow-shaped rib wall is flush with the top of the shaft, the lower end of the arrow-shaped rib wall is fixedly connected with the upper end of the blade foot, and the lower end of the blade foot is flush with the bottom of the shaft. The cross section of the upper end of the blade foot is consistent with that of the arrow-shaped rib wall, the cross section of the lower end of the blade foot is a straight line along the radius of the section of the shaft, and the cross section of the blade foot is uniformly narrowed from top to bottom.
The present embodiment is provided with eight arrow-shaped rib walls and adopts a construction method of dividing into four segments for prefabrication. The shaft is a vertical cylindrical structure with a circular cross section.
The construction process comprises the following steps:
firstly, pouring and forming an integral pouring structural body of a shaft and an arrow-shaped ribbed wall in a prefabrication field, and obtaining a single-section structure of the open caisson after prefabrication. And then, transporting the single-section structure of the open caisson obtained by prefabrication to a construction site as required.
After a construction site is leveled, the poured single-section open caisson cutting edge with the cutting edge is placed in a construction area downwards, the resistance of a soil body is reduced when the open caisson sinks by using the cutting edge, and meanwhile, the open caisson sinks downwards by using the self gravity or external machinery.
Simultaneously digging out earthwork in a shaft by using an excavator, sinking a single section of open caisson to a specified depth, and after the earthwork in the open caisson is cleaned, fixedly connecting the next section of open caisson with the settled open caisson by using cast-in-place concrete, continuously settling the formed multi-section open caisson structure, and simultaneously digging out the earthwork in the open caisson by using the excavator; at the moment, the arrow-shaped rib wall of the open caisson structure is in contact with soil outside the shaft, so that the contact area between the open caisson structure and the external soil is increased, and the stability of the open caisson structure is further enhanced.
Simultaneously, installing an intercostal crossbeam between the wing walls of the outer arrow-shaped rib wall, and horizontally and fixedly installing the intercostal crossbeam between two adjacent wing walls; and inter-rib cross beams are arranged between the eight arrow-shaped rib walls, so that the overall strength and stability of the open caisson structure are improved.
And repeating the steps until all the single-section open caisson is spliced into the whole open caisson structure and is settled to the designed elevation.
And after the whole open caisson structure is settled to the designed elevation and the earthwork inside the open caisson structure is cleaned, starting bottom sealing operation of the open caisson, namely sealing the bottom of the open caisson by using concrete, so that the open caisson structure becomes a structure body with a sealed lower part.
After the open caisson completes bottom sealing, if other structures are designed in the open caisson, the construction of the internal structure of the open caisson can be started.
After the steps are completed, the open caisson sealing work is started, namely: the well cover of the open caisson is fixedly installed at the top of the open caisson, and then the gap between the well cover at the top of the open caisson and the open caisson is sealed by concrete, so that the open caisson becomes a completely closed structure.
At the moment, the installation work of the open caisson is completed, and the open caisson can be normally used as the foundation of a large building structure.
Furthermore, the utility model discloses can also adopt the scheme that sets up 4 arrow-shaped rib walls or set up 16 arrow-shaped rib walls. The selection of the shaft is not limited to the cylindrical structure having a circular ring shape, and an internal shaft structure having a polygonal cross section may be used. Besides the open caisson construction by adopting the steps, the prefabricated parts can be assembled in advance, and then the open caisson settlement work can be carried out. Meanwhile, besides the construction mode of assembling the prefabricated parts, the construction mode of pouring concrete into the open caisson structure in real time on the construction site can be selected.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (10)
1. The utility model provides a take prefabricated assembled open caisson structure of arrow-shaped ribbed wall, includes pit shaft, sword foot, outside ribbed wall, and a plurality of outside ribbed wall set up the surface at the pit shaft, and the sword foot is located outside ribbed wall's below, its characterized in that: the external ribbed wall is an arrow-shaped ribbed wall, the cross section of the arrow-shaped ribbed wall is in an arrow shape with the direction extending outwards from the center of the cross section of the shaft, the radial root of the arrow-shaped ribbed wall is fixedly connected with the outer wall of the shaft, and the front part of the arrow-shaped ribbed wall extends outwards far away from the shaft.
2. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the arrow-shaped rib wall comprises a wing wall and a web wall; an arrow rib wall includes two wing walls and a belly wall, and the belly wall sets up along radial, and the inner of belly wall and the outer wall fixed connection of arrow rib wall, the outer end of belly wall and the tip fixed connection of two wing walls, two wing walls are the fixed connection of falling V-arrangement, and the contained angle that two wing walls formed is 100 plus 135 degrees, and the belly wall is located the angular bisector of the contained angle that two wing walls formed.
3. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the wing-wall-mounted wing-wall assembly is characterized by further comprising an intercostal cross beam, wherein the intercostal cross beam is horizontally arranged between two adjacent arrow-shaped rib walls, one end of the intercostal cross beam is fixedly connected with one wing wall of one arrow-shaped rib wall, and the other end of the intercostal cross beam is fixedly connected with the wing walls which are adjacently distributed in the adjacent arrow-shaped rib walls.
4. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 3, wherein: all be provided with intercostal crossbeam between every adjacent arrow-shaped rib wall, and from the top down has set gradually the intercostal crossbeam of no less than one between two arrow-shaped rib walls.
5. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the open caisson structure comprising the shaft, the blade foot and the arrow-shaped rib wall is a structure formed by integrally pouring concrete.
6. The prefabricated open caisson structure with the arrow-shaped ribbed wall, according to claim 5, wherein: the open caisson structure is a sectional type splicing structure and comprises a plurality of prefabricated open caisson structure units which are sequentially spliced from bottom to top.
7. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the shaft is provided with a plurality of arrow-shaped rib walls which are uniformly distributed on the outer surface of the shaft.
8. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the upper end of the arrow-shaped rib wall is flush with the top of the shaft, the lower end of the arrow-shaped rib wall is fixedly connected with the upper end of the blade foot, and the lower end of the blade foot is flush with the bottom of the shaft.
9. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the cross section of the upper end of the blade foot is consistent with that of the arrow-shaped rib wall, the cross section of the lower end of the blade foot is a straight line along the radius of the section of the shaft, and the cross section of the blade foot is narrowed from top to bottom.
10. The prefabricated open caisson structure with the arrow-shaped ribbed wall according to claim 1, wherein: the cross section of pit shaft is the ring shape, and the pit shaft is vertical cylindric structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121003321.9U CN215105444U (en) | 2021-05-11 | 2021-05-11 | Take prefabricated assembled open caisson structure of arrow-shaped ribbed wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121003321.9U CN215105444U (en) | 2021-05-11 | 2021-05-11 | Take prefabricated assembled open caisson structure of arrow-shaped ribbed wall |
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| CN215105444U true CN215105444U (en) | 2021-12-10 |
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| CN202121003321.9U Active CN215105444U (en) | 2021-05-11 | 2021-05-11 | Take prefabricated assembled open caisson structure of arrow-shaped ribbed wall |
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