CN111877411A - CC3/3 type auxiliary anti-floating device for underground space bearing column - Google Patents
CC3/3 type auxiliary anti-floating device for underground space bearing column Download PDFInfo
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- CN111877411A CN111877411A CN202010794254.0A CN202010794254A CN111877411A CN 111877411 A CN111877411 A CN 111877411A CN 202010794254 A CN202010794254 A CN 202010794254A CN 111877411 A CN111877411 A CN 111877411A
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- 238000007667 floating Methods 0.000 title claims abstract description 52
- 210000002435 tendon Anatomy 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011324 bead Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 10
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 4
- 239000011151 fibre-reinforced plastic Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000001568 sexual effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model provides an underground space bearing column is with supplementary anti device that floats of CC3/3 type, belongs to the building structure field, accomodates layer, the flexible tension tendon of ground connection including last roof portion strong magnetic layer, column bottom round platform type magnetic force upper strata, column bottom round platform type buoyancy lower floor, flexible tension tendon. Under the influence of continuous strong precipitation weather, the water level of the underground space is continuously lifted, so that the low-density circular truncated cone type device matched with the bearing cylinder floats. The circular truncated cone at the bottom of the column is connected with the upper top plate through the magnet to enable the flexible tension tendon connected below the circular truncated cone to be in a stretched state and generate vertical downward tension. The invention has simple structure and convenient installation, can improve the anti-floating performance of the bearing cylinder in the underground space, and can play an obvious role in protecting the underground space building.
Description
Technical Field
The invention belongs to the field of building structures, and relates to a CC3/3 type auxiliary anti-floating device for an underground space bearing column. Under the influence of continuous strong precipitation weather, the water level of the underground space is continuously lifted, so that the low-density circular truncated cone device matched with the bearing cylinder floats upwards to drive the flexible tension tendon connected with the bottom of the building to generate vertical downward tensile force, the anti-floating performance of the underground space bearing cylinder is improved, and the underground space building (particularly the building in the construction period) can be obviously protected.
Background
With the advance of urbanization, urban underground space is further developed, the buried depth of underground foundations is continuously increased, the national housing and urban and rural construction department implements a new version of the technical standard for resisting floating of building engineering in 3 and 1 month in 2020, and the anti-floating design of building structures has become the focus of industrial attention. The insufficient floating stability causes numerous underground space engineering accidents, such as continuous strong precipitation influence in Nanchang city of 7 Yue 2020 (a rainstorm red early warning signal is issued by a meteorological department, the maximum rainfall per day of Nanchang reaches 234 mm), cracks are generated in more than 40 bearing columns in an underground space of a well-known commercial square underground garage in construction. The reason is mainly that the buoyancy borne by the building structure is continuously increased due to the fact that the water level of the underground space is lifted, the original vertical load of the bearing column body is weakened, and the structure is easier to shear and damage and generate a large number of cracks.
In order to solve the problems, the CC3/3 type auxiliary anti-floating device for the bearing column of the underground space is designed, and is hereinafter referred to as the auxiliary anti-floating device. The traditional anti-floating process usually adopts anti-floating measures such as a weight pressing method, an anti-pulling pile, an anti-floating anchor rod and the like in advance in the construction period, and the measures can increase the structural size of the bearing column, so that the manufacturing cost is continuously increased. In comparison, the technology of the auxiliary anti-floating device is more flexible and convenient, the original design structure of the bearing column does not need to be changed, and the auxiliary anti-floating device is directly arranged at the bottom of the bearing column body. In addition, at normal construction stage and building life, supplementary anti device that floats can not produce extra load to underground space bearing cylinder, and only when leading to the underground space water level to lift to heavy precipitation weather, through providing extra pulling force downwards with the anti floating performance that improves the building, really accomplishes the design theory of "not only light but also heavy".
The circular truncated cone device comprises 4 components from top to bottom: strong magnetic connecting layer, the cone-frustum type buoyancy layer that density is lighter than water, flexible tension tendon accomodates layer and flexible tension tendon. When the water level rises, the bottom low-density circular truncated cone type buoyancy layer starts to start; when the water level rises to a certain height, the strong magnetic connecting layer is in close contact with the top magnetic layer and generates initial pretension to the flexible tension tendon at the lower end, so that the effect of protecting the underground space bearing cylinder is achieved. Therefore, the auxiliary anti-floating device has strong instantaneity and does not cause any additional burden on the bearing column under the normal safety state, and the aspect is obviously superior to the traditional anti-floating technology. In addition, the traditional anti-floating process is mostly suitable for the construction period, and is difficult to use for the built building structure which still needs to enhance the anti-floating performance. Compared with the traditional process, the auxiliary anti-floating device can be customized according to the size of a specific bearing column, and is convenient to mount and dismount in the using process, so that the auxiliary anti-floating device is not only suitable for building structures in the construction period, but also more suitable for built building structures. In conclusion, the CC3/3 type auxiliary anti-floating device for the bearing column of the underground space is very convenient and effective to solve the problem of insufficient anti-floating stability of the building, and has wide application prospect.
Disclosure of Invention
The invention provides a CC3/3 type auxiliary anti-floating device for a bearing Column of an underground space, aiming at the problem of insufficient anti-floating performance of a building, the main structure of the CC3/3 type auxiliary anti-floating device consists of a Column (Column) and a Circular truncated cone (Circular truncated cone), 3 vertically supported flexible tension tendons and 3 obliquely supported flexible tension tendons are added, and the CC3/3 type auxiliary anti-floating device is abbreviated as the system.
In order to achieve the above object, the present invention adopts the following technical solutions.
The utility model provides an underground space bearing column is with supplementary anti device that floats of CC3/3 type, includes that layer 4, the flexible tension tendon of upper plate magnetism layer 1, flexible tension tendon of ground connection accomodate, column bottom round platform type buoyancy device, wherein, column bottom round platform type buoyancy device includes column bottom round platform type magnetism upper strata 2, column bottom round platform type buoyancy lower floor 3. The auxiliary anti-floating device is under the influence of continuous strong precipitation weather, the water level of an underground space is continuously lifted, the round platform at the bottom of the column pulls the grounding flexible tension tendon to float to a certain height, and the grounding flexible tension tendon is connected with the upper top plate through magnetic force to be in a tight state and generate downward pulling force, so that the anti-floating performance of the bearing column body of the underground space is improved.
The upper top plate magnetic layer 1 comprises a connecting rivet 6 and a magnet 7, a central through hole for passing through the bearing cylinder is formed in the middle of the magnet 7, and the magnet is sleeved on the periphery of the bearing cylinder and is not connected with the bearing cylinder; the connecting rivet 6 is used for fixedly connecting the magnet 7 with the upper top plate.
The column bottom circular truncated cone type buoyancy device is a hollow circular truncated cone structure which can allow the bearing column to penetrate through the hollow circular truncated cone type buoyancy device; column bottom round platform type magnetic force upper strata 2, column bottom round platform type buoyancy lower floor 3, flexible tension tendon accomodate layer 4 middle part and all are equipped with the through-hole, and the cover is peripheral at the bearing cylinder, and does not link to each other with the bearing cylinder, wherein:
the column bottom circular truncated cone magnetic force upper layer 2 is located at the top of the column bottom circular truncated cone type buoyancy device, and when the water level reaches a certain height, the column bottom circular truncated cone magnetic force upper layer 2 floats upwards and then is connected with the magnet 7 of the upper top plate magnetic force layer 1 through magnetic force.
The column bottom circular truncated cone buoyancy lower layer 3 is positioned in the middle of the column bottom circular truncated cone buoyancy device, a hollow glass bead buoyancy part 8 is arranged in the column bottom circular truncated cone buoyancy lower layer, and a flexible tension tendon chain connector 9 is arranged at the bottom of the column bottom circular truncated cone buoyancy lower layer; the hollow glass bead buoyancy part 8 is light in weight and lower in density than water, and can provide good buoyancy and drive the flexible tension tendon to float upwards; the flexible tension tendon chain interface 9 is used for being connected with the top of the grounding flexible tension tendon 5, providing downward pull force for a building and improving the anti-floating performance of the building. The hollow glass bead buoyancy part 8 is a hollow glass bead 4.
The grounding flexible tension tendon 5 is positioned below the circular truncated cone type buoyancy device at the bottom of the column, Fiber Reinforced Plastic (FRP) is adopted, the bottom of the FRP is fixed on the ground, and the top of the FRP is connected with a sexual tension tendon chain interface 9. The total number of the flexible grounding tension tendons is 6, 3 diagonal bracing tendons and 3 vertical grounding tendons. The flexible tension tendon accommodating layer 4 is arranged below the lower buoyancy layer 3 of the circular truncated cone at the bottom of the column and is used for accommodating the flexible tension tendon 5 when the whole device is in a standing state.
Under normal conditions, the device surrounds the bearing cylinder and rests on the ground, can not produce any influence to the cylinder, and all parts do not get into work.
After heavy rainfall weather takes place, anti device that floats gets into operating condition, along with underground space structure begins to produce ponding, and the water level rises gradually, and column bottom circular platform type buoyancy device begins to play a role: under the water environment, the buoyancy generated by the lower layer 3 of the cone-frustum-shaped buoyancy at the bottom of the column drives the bottom and the flexible tension tendon 5 connected with the bottom to gradually float up along the column and enter a floating state. When the magnetic force rises to a certain water level, the magnetic force between the upper top plate magnetic layer 1 and the upper layer 2 of the circular truncated cone magnetic force at the bottom of the column starts to play a role. Because the whole weight of the column bottom circular truncated cone type buoyancy device is light, the height of the column bottom circular truncated cone type buoyancy device is just within the action range of magnetic force, the circular truncated cone is driven by the magnetic force to move upwards in an accelerating mode, and the upper top plate magnetic layer 1 and the column bottom circular truncated cone magnetic upper layer 2 are finally tightly connected together and enter a connection state. At this time, the plurality of grounded flexible tension tendons 5 connected to the bottom of the circular truncated cone are in a tensioned and stretched state, and generate downward tension. Because the other end of the grounding flexible tension tendon 5 is fixed to the bottom surface of the underground space of the building when being installed, the downward pulling force generated by the flexible tension tendons can be transmitted to the building body. Under the condition, all the bearing columns in the underground space are in a connected state by the CC3/3 type auxiliary anti-floating device, and the set of all the pulling forces is used for resisting the buoyancy force borne by the building, so that the bearing columns are not easy to be sheared and damaged, and the aim of improving the anti-floating stability of the building is fulfilled.
The invention has the beneficial effects that:
1) in normal construction and building use periods, the CC3/3 auxiliary anti-floating device for the bearing column does not influence the building structure, and is only an auxiliary device attached to the periphery of the bearing column.
2) The bearing column is triggered by the CC3/3 auxiliary anti-floating device when water is accumulated in the underground space, and downward tension is added to the structure to improve the anti-floating stability of the whole structure; the trigger can not be triggered under a normal state (no accumulated water), and the instantaneity is very strong.
3) The bearing column is easy to mount and dismount by the CC3/3 auxiliary anti-floating device.
4) The CC3/3 auxiliary anti-floating device for the bearing column can be installed on a building structure under construction and an established building structure, and breaks through the limit of the construction period and the service life.
5) The design of the round platform type can effectively reduce the collision between objects in the underground space and the device, and more flexible tension tendons can be accommodated in the limited space.
(6) The 3 obliquely supported flexible tension tendons are arranged, so that partial shearing force can be directly resisted, and the stand column is prevented from being sheared and deformed.
Drawings
FIG. 1 is a three-dimensional schematic of the present invention.
Fig. 2 is a diagram of the present invention in a normal state.
Fig. 3 is a diagram of the present invention in a floating state.
Fig. 4 is a diagram of the present invention in a connected state.
In the figure: 1, a top plate magnetic layer is arranged; 2, a circular truncated cone magnetic upper layer at the bottom of the column; 3, a circular truncated cone buoyancy lower layer at the bottom of the column; 4 a flexible tension tendon receiving layer; 5 grounding flexible tension tendon; 6, connecting rivets; 7 a magnet; 8 hollow glass bead buoyancy parts; 9 flexible tendon chain interface.
Detailed Description
For a clearer understanding of the features, objects, and effects of the auxiliary anti-floating device, the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, 2, 3 and 4, the present invention includes an upper top plate magnetic layer 1, a truncated cone-shaped magnetic upper layer 2 at the bottom of a column, a truncated cone-shaped buoyancy lower layer 3 at the bottom of a column, a flexible tension tendon storage layer 4, and a grounded flexible tension tendon 5. The upper top plate magnetic layer 1 comprises a connecting rivet 6 and a magnet 7, a central through hole for passing through the bearing cylinder is formed in the middle of the magnet 7, and the magnet is sleeved on the periphery of the bearing cylinder; the connecting rivet 6 is used for fixedly connecting the magnet 7 with the upper top plate. Column bottom round platform type buoyancy device locate bearing cylinder below, column bottom round platform type magnetic force upper strata 2, column bottom round platform type buoyancy lower floor 3, flexible tension tendon accomodate layer 4 middle part and all are equipped with the through-hole, cup joint in the bearing cylinder periphery, wherein: the column bottom circular truncated cone magnetic force upper layer 2 is located at the top of the column bottom circular truncated cone type buoyancy device, and when the water level reaches a certain height, the column bottom circular truncated cone magnetic force upper layer 2 floats upwards and then is connected with the magnet 7 of the upper top plate magnetic force layer 1 through magnetic force. The column bottom circular truncated cone buoyancy lower layer 3 is positioned in the middle of the column bottom circular truncated cone type buoyancy device, a low-density hollow glass bead buoyancy part 8 is arranged in the column bottom circular truncated cone type buoyancy device, and a flexible tension tendon chain connector 9 is arranged at the bottom. The grounding flexible tension tendon 5 is positioned below the circular truncated cone type buoyancy device at the bottom of the column, can be stretched and contracted, is fixed on the ground at the bottom and is connected with a sexual tension tendon chain interface 9 at the top. The total number of the flexible grounding tension tendons is 6, 3 diagonal bracing tendons and 3 vertical grounding tendons. The flexible tension tendon accommodating layer 4 is arranged below the lower buoyancy layer 3 of the circular truncated cone at the bottom of the column and is used for accommodating the flexible tension tendon 5 when the whole device is in a standing state. Fig. 2, fig. 3 and fig. 4 show the bearing column of the underground space in a normal state, a floating state and a connection state respectively by using the CC3/3 type auxiliary anti-floating device. The normal state is that the device is statically placed on the ground, no influence is generated on the column body, and all parts do not work. Along with the beginning of the underground space structure to generate accumulated water, the water level gradually rises, the round platform at the bottom of the column starts to play a role, the buoyancy generated by the buoyancy lower layer of the round platform in the water environment drives the flexible tension tendons connected with the bottom to gradually float up along the column, and the column starts to enter a floating state. When the magnetic force rises to a certain water level, the magnetic force between the upper top plate magnetic layer 1 and the upper layer 2 of the circular truncated cone magnetic force at the bottom of the column starts to play a role. The whole weight of the circular truncated cone device is light, and the height of the circular truncated cone device is just within the action range of the magnetic force, so that the circular truncated cones are driven by the magnetic force to move upwards in an accelerating mode and finally connected together to enter a connection state. When the upper top plate magnetic layer 1 and the circular truncated cone magnetic upper layer 2 at the bottom of the column are tightly connected, a plurality of grounding flexible tension tendons 5 connected with the bottom of the circular truncated cone are in a tensioned and stretched state, and downward tension is generated. Because the other end of the grounding flexible tension tendon 5 is fixed to the bottom surface of the underground space of the building when being installed, the downward pulling force generated by the flexible tension tendons can be transmitted to the building body. Under the condition, all the bearing columns in the underground space are in a connected state by the CC3/3 type auxiliary anti-floating device, and the set of all the pulling forces is used for resisting the buoyancy force borne by the building, so that the bearing columns are not easy to be sheared and damaged, and the aim of improving the anti-floating stability of the building is fulfilled.
The device is manufactured and installed:
(1) the device is manufactured according to the size of the bearing column in the specific underground space, so that the bearing column can be matched with the anti-floating device.
(2) The simple to operate of device goes up roof magnetic layer and constitutes an annular magnet by two semi-rings, is fixed in upper portion roof through connecting the rivet with it: the circular truncated cone part at the bottom of the column is formed by splicing two vertical semicircular tables; the lower end interface of the round table at the bottom of the column is connected with one end of a flexible tension tendon, and the other end of the flexible tension tendon is fixed under the ground.
The above description describes the embodiments of the auxiliary anti-floating device of type CC3/3 for bearing column of underground space with reference to the attached drawings, but the present auxiliary anti-floating device is not limited to the above embodiments, and these descriptions are only illustrative and not restrictive, and the forms may be varied without changing the core idea and without exceeding the protection scope of the claims.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (1)
1. A CC3/3 type auxiliary anti-floating device for an underground space bearing column is characterized by comprising an upper top plate magnetic layer (1), a flexible tension tendon accommodating layer (4), a grounding flexible tension tendon (5) and a column bottom circular truncated cone type buoyancy device, wherein the column bottom circular truncated cone type buoyancy device comprises a column bottom circular truncated cone type magnetic upper layer (2) and a column bottom circular truncated cone type buoyancy lower layer (3); the middle parts of the cone-shaped magnetic upper layer (2) at the bottom of the column, the cone-shaped buoyancy lower layer (3) at the bottom of the column and the flexible tension tendon containing layer (4) are all provided with through holes which are sleeved on the periphery of the bearing column body and are not connected with the bearing column body;
the upper top plate magnetic layer (1) comprises a connecting rivet (6) and a magnet (7), a central through hole for passing through the bearing cylinder is formed in the middle of the magnet (7), and the magnet is sleeved on the periphery of the bearing cylinder and is not connected with the bearing cylinder; the magnet (7) is fixedly connected with the upper top plate through a connecting rivet (6);
the upper magnetic layer (2) of the circular truncated cone at the bottom of the column is positioned at the top of the circular truncated cone type buoyancy device at the bottom of the column, and when the water level reaches a certain height, the upper magnetic layer (2) of the circular truncated cone at the bottom of the column floats upwards and is connected with the magnet (7) of the upper top plate magnetic layer (1) by using magnetic force;
the column bottom circular truncated cone buoyancy lower layer (3) is positioned in the middle of the column bottom circular truncated cone buoyancy device, a hollow glass bead buoyancy part (8) is arranged in the column bottom circular truncated cone buoyancy device, and a flexible tension tendon chain interface (9) is arranged at the bottom; the hollow glass bead buoyancy part (8) is lower in density than water and is used for providing buoyancy and driving the flexible tension tendon (5) to float upwards; the flexible tension tendon chain interface (9) is used for being connected with the top of the grounding flexible tension tendon (5) to provide downward pulling force for a building and improve the anti-floating performance of the building;
the grounding flexible tension tendon (5) is positioned below the circular truncated cone type buoyancy device at the bottom of the column, and the bottom of the grounding flexible tension tendon is fixed on the ground;
the flexible tension tendon accommodating layer (4) is arranged below the circular truncated cone buoyancy lower layer (3) at the bottom of the column and is used for accommodating the flexible tension tendon (5) when the whole device is in a standing state;
in a normal state, the device surrounds the bearing cylinder and is statically placed on the ground; after the heavy rainfall weather occurs, the water level gradually rises along with the underground space structure, and the circular truncated cone type buoyancy lower layer (3) at the bottom of the column pulls the flexible tension tendon (5) to gradually float upwards along the bearing column body and enter a floating state; after the magnetic force layer floats to a certain water level, under the action of magnetic force between the upper top plate magnetic force layer (1) and the cylindrical bottom circular truncated cone magnetic force upper layer (2), the cylindrical bottom circular truncated cone magnetic force upper layer (2) moves upwards in an accelerated manner and is tightly connected with the upper top plate magnetic force layer (1); at the moment, the flexible grounding tension tendon (5) is in a tensioned and straight state, and generates downward tension.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010794254.0A CN111877411B (en) | 2020-08-10 | 2020-08-10 | CC3/3 type auxiliary anti-floating device for underground space bearing column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010794254.0A CN111877411B (en) | 2020-08-10 | 2020-08-10 | CC3/3 type auxiliary anti-floating device for underground space bearing column |
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| CN111877411B CN111877411B (en) | 2024-06-14 |
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| Publication number | Publication date |
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| CN111877411B (en) | 2024-06-14 |
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