CN111764376A - Earthquake-resistant building foundation pile - Google Patents
Earthquake-resistant building foundation pile Download PDFInfo
- Publication number
- CN111764376A CN111764376A CN202010691116.XA CN202010691116A CN111764376A CN 111764376 A CN111764376 A CN 111764376A CN 202010691116 A CN202010691116 A CN 202010691116A CN 111764376 A CN111764376 A CN 111764376A
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- foundation pile
- damping
- plate
- pile body
- earthquake
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- 238000013016 damping Methods 0.000 claims abstract description 90
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 230000005284 excitation Effects 0.000 description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- 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
- E02D31/08—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 transmission of vibrations or movements in the foundation soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses an earthquake-resistant building foundation pile, which belongs to the technical field of buildings and comprises a prefabricated foundation pile body and a bearing platform fixedly arranged at the upper end of the prefabricated foundation pile body, wherein the bearing platform is positioned above the ground, the prefabricated foundation pile body is positioned below the ground, a bottom plate is arranged at the lower end of the prefabricated foundation pile body, a plurality of damping plates are annularly arranged on the outer side of the prefabricated foundation pile body and are circumferentially arranged at intervals to form an annular shape, the damping plates extend downwards along the axial direction of the prefabricated foundation pile body, a damping structure is connected between each damping plate and the base plate body, and loam is filled in a space between each damping plate and the prefabricated foundation pile body. The invention can carry out earthquake-resistant design on the building pile foundation, has good bearing capacity and economic structure, can radically reduce the influence of earthquake on the building and improve the earthquake resistance of the building.
Description
Technical Field
The invention belongs to the technical field of building structures, and particularly relates to an earthquake-resistant building foundation pile.
Background
In recent years, the earthquake of China is high, the earthquake resistant requirement of the country on buildings is improved, and the new buildings built at present basically have good earthquake resistant effect, so that the living safety degree of people is improved. However, the buildings constructed before that have poor earthquake-proof effect and extremely low living safety. In order to enable buildings to meet national anti-seismic requirements, most of buildings are designed to be anti-seismic only on the part above the building ground, the anti-seismic design below the building ground is rarely researched, and the invention patent application with the publication number of CN107700515B discloses a building pile foundation which can achieve a certain anti-seismic effect, but the design causes the device to be complex, the bearing capacity is poor, and the bearing requirements of ultra-large buildings cannot be met.
Disclosure of Invention
In view of the above, the present invention provides an earthquake-resistant building foundation pile, which can perform earthquake-resistant design on a building pile foundation, has good bearing capacity and an economic structure, and can fundamentally reduce the influence of an earthquake on a building and improve the earthquake resistance of the building.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention relates to an earthquake-resistant building foundation pile which comprises a prefabricated foundation pile body and a bearing platform fixedly arranged at the upper end of the prefabricated foundation pile body, wherein the bearing platform is positioned above the ground, the prefabricated foundation pile body is positioned below the ground, the lower end of the prefabricated foundation pile body is provided with a bottom plate, a plurality of damping plates are annularly arranged on the outer side of the prefabricated foundation pile body and are circumferentially arranged at intervals to form an annular shape, the damping plates extend downwards along the axial direction of the prefabricated foundation pile body, a damping structure is connected between each damping plate and the base plate body, space between each damping plate and the prefabricated foundation pile body is filled with loam, the bottom of the bearing platform is provided with a plurality of upper sliding grooves which are uniformly distributed along the circumferential direction of the bearing platform, the upper end of each damping plate is fixedly provided with a first sliding block, the first sliding block is in sliding fit with the upper sliding grooves, the upper surface of the bottom plate is provided with a plurality, the lower sliding grooves are uniformly distributed along the circumferential direction of the bottom plate, and a second sliding block is fixedly arranged at the lower end of each damping plate and is in sliding fit with the lower sliding grooves.
Furthermore, the damping plate is formed by connecting a plurality of vertical circular ring plates in series in sequence along the vertical direction, and two adjacent vertical circular ring plates are connected through energy-consuming steel bars.
Furthermore, in the damping plate, vertical through holes are formed in the vertical circular ring plates, and each energy-consuming reinforcing steel bar penetrates through all the vertical circular ring plates and is fixedly connected with the vertical circular ring plates.
Further, the damping structure is a tuned mass damper, the tuned mass damper is horizontally arranged between the prefabricated foundation pile body and the damping plate, one end of the tuned mass damper is fixedly connected with the inner wall of the damping plate, and the other end of the tuned mass damper is fixedly connected with the prefabricated foundation pile body.
Further, the tuned mass damper is arranged between each vertical circular ring plate and the prefabricated foundation pile body.
Further, a circular table plate is arranged on the outer side of the lower portion of the damping plate, the circular table plate extends outwards along the radial direction of the prefabricated foundation pile body, a central hole used for yielding of the damping plate is formed in the middle of the circular table plate, and the circular table plate is in sliding fit with the damping plate.
Further, a third sliding block is fixedly arranged on the outer side of the lower portion of the damping plate, a vertical sliding groove is formed in the inner wall of the circular table plate, and the third sliding block is in sliding fit with the vertical sliding groove.
Furthermore, a frustum is integrally arranged at the upper end of the circular table plate, and the inclined surface of the frustum inclines towards one side of the damping plate.
The invention has the beneficial effects that:
according to the invention, the bearing platform is arranged at the upper end of the prefabricated foundation pile body and used for bearing an upper building, the plurality of damping plates are arranged at intervals along the circumferential direction to form a ring shape, the damping structure is connected between each damping plate and the base plate body, when soil on the outer side of the prefabricated foundation pile body forms radial excitation force, earthquake excitation firstly acts on the damping plates on the outer side of the prefabricated foundation pile body and drives the damping plates to break through the restriction of loam for displacement, and because the damping structures are connected between the damping plates and the base plate body, when the damping plates transmit the damping force to the base plate body, energy dissipation and shock absorption can be realized through the damping structures, so that the influence of the radial earthquake excitation on the prefabricated foundation pile body is reduced, and the shock resistance of the foundation pile structure is increased.
The bearing platform is arranged at the upper end of the prefabricated foundation pile body, the bottom plate is arranged at the lower end of the prefabricated foundation pile body, and the bearing platform, the prefabricated foundation pile body and the bottom plate are tightly attached and connected, so that the bearing capacity of the foundation pile is ensured, the possibility of downward collapse of a building in normal use is prevented, and the stability of the building is improved. The bottom of cushion cap and the upside of bottom plate have all seted up the spout, through the both ends of damping plate respectively with cushion cap and bottom plate sliding connection, can play the effect of direction, let the damping plate according to the track removal of regulation, prevent to take place the dislocation between the damping plate for whole device is more stable.
Additional advantages, objects, and features of the invention will be set forth in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic view of the arrangement of the damping plate of the present invention;
FIG. 3 is a schematic structural view of a circular table plate;
fig. 4 is a schematic structural diagram of the base plate.
The drawings are numbered as follows: the prefabricated foundation pile comprises a prefabricated foundation pile body 1, a bearing platform 2, a bottom plate 3, a damping plate 4, a vertical circular plate 41, energy-consuming steel bars 42, a vertical through hole 43, a damping structure 5, an upper chute 6, a first sliding block 7, a lower chute 8, a second sliding block 9, a circular truncated cone plate 10, a central hole 11, a third sliding block 12, a vertical chute 13 and a frustum 14.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the description of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, the anti-seismic building foundation pile of the invention comprises a prefabricated foundation pile body 1 and a bearing platform 2 fixedly arranged at the upper end of the prefabricated foundation pile body 1, wherein the bearing platform 2 is positioned above the ground, the prefabricated foundation pile body 1 is positioned below the ground, a bottom plate 3 is arranged at the lower end of the prefabricated foundation pile body 1, a plurality of damping plates 4 are annularly arranged at the outer side of the prefabricated foundation pile body 1, the plurality of damping plates 4 are circumferentially arranged at intervals to form an annular shape, the damping plates 4 extend downwards along the axial direction of the prefabricated foundation pile body 1, a damping structure 5 is connected between each damping plate 4 and the base plate body, soil is filled in a space between each damping plate 4 and the prefabricated foundation pile body 1, a plurality of upper chutes 6 are arranged at the bottom of the bearing platform 2, the upper chutes 6 are uniformly distributed along the circumferential direction of the bearing platform 2, a first slide block 7 is fixedly arranged at the upper end of each damping plate 4, first slider 7 and 6 sliding fit of last spout, a plurality of lower spouts 8 have been seted up to the upper surface of bottom plate 3, spout 8 has set firmly second slider 9 along the circumference equipartition of bottom plate 3 down, the lower extreme of each damping plate 4, second slider 9 and 8 sliding fit of lower spout.
According to the invention, the bearing platform 2 is arranged at the upper end of the prefabricated foundation pile body 1 and used for bearing an upper building, the plurality of damping plates 4 are arranged at intervals along the circumferential direction to form a ring shape, the damping structure 5 is connected between each damping plate 4 and the base plate body, when the soil on the outer side of the prefabricated foundation pile body 1 forms radial excitation force, earthquake excitation firstly acts on the damping plates 4 on the outer side of the prefabricated foundation pile body 1 and drives the damping plates 4 to break through the restriction of loam for displacement, and the damping structure 5 is connected between the damping plates 4 and the base plate body, so that when the damping plates 4 transmit the damping force to the base plate body, energy dissipation and shock absorption can be realized through the damping structures 5, the influence of the radial earthquake excitation on the prefabricated foundation pile body 1 is reduced, and the shock resistance of the foundation pile structure is improved.
In the invention, the bearing platform 2 is arranged at the upper end of the prefabricated foundation pile body 1, the bottom plate 3 is arranged at the lower end of the prefabricated foundation pile body 1, and the bearing platform 2, the prefabricated foundation pile body 1 and the bottom plate 3 are tightly attached and connected, so that the bearing capacity of the foundation pile is ensured, the possibility of downward collapse of a building in normal use is prevented, and the stability of the building is improved. The spout has all been seted up to the bottom of cushion cap 2 and the upside of bottom plate 3, through the both ends of damping plate 4 respectively with cushion cap 2 and 3 sliding connection of bottom plate, can play the effect of direction, lets damping plate 4 according to the track movement of regulation, prevents to take place the dislocation between damping plate 4 for whole device is more stable.
In this embodiment, the damping plate 4 is formed by connecting a plurality of vertical circular ring plates 41 in series in sequence along the vertical direction, and two adjacent vertical circular ring plates 41 are connected through energy dissipation steel bars 42. Each damping plate 4 is divided into a plurality of vertical circular ring plates 41, so that prefabrication and assembly are facilitated, construction is simple and cheap, and mass production and cost reduction can be achieved. By arranging the energy consumption reinforcing steel bars 42, the two adjacent vertical circular ring plates 41 can be connected, and transverse energy consumption can be performed when the two vertical circular ring plates are dislocated.
In this embodiment, in the damping plate 4, the vertical circular plate 41 is provided with a vertical through hole 43, and each energy dissipation steel bar 42 penetrates through all the vertical circular plates 41 and is fixedly connected with the vertical circular plate 41. In this embodiment, vertical ring plate 41 also can adopt precast concrete ring plate, and energy consumption reinforcing bar 42 directly pours with vertical ring plate 41 an organic whole, and convenient and fast can batch production.
In this embodiment, the damping structure 5 is a tuned mass damper, the tuned mass damper is horizontally arranged between the precast foundation pile body 1 and the damping plate 4, one end of the tuned mass damper is fixedly connected with the inner wall of the damping plate 4, and the other end of the tuned mass damper is fixedly connected with the precast foundation pile body 1. The tuned mass damper is arranged between each vertical circular ring plate 41 and the precast foundation pile body 1, so that stress is more balanced, and mutual influence between the vertical circular ring plates 41 is weakened.
In this embodiment, a circular table plate 10 is arranged on the outer side of the lower portion of the damping plate 4, the circular table plate 10 extends outwards along the radial direction of the precast foundation pile body 1, a central hole 11 for yielding the damping plate 4 is formed in the middle of the circular table plate 10, and the circular table plate 10 is in sliding fit with the damping plate 4. In this embodiment, the damping plate 4 is used for bearing some vertical earthquake exciting forces, when an earthquake transmits the vertical exciting forces upwards from the bottom of the circular table plate 10, the damping plate 4 is driven to move upwards by a small displacement, the outer side of the lower portion of the damping plate 4 is fixedly provided with the third sliding block 12, the inner wall of the circular table plate 10 is provided with the vertical sliding groove 13, the third sliding block 12 is in sliding fit with the vertical sliding groove 13, friction force is generated through sliding, the exciting forces of the earthquake are offset, and the effects of energy dissipation and shock absorption are achieved.
In this embodiment, a frustum 14 is integrally provided at the upper end of the circular bedplate 10, and an inclined surface of the frustum 14 inclines beyond one side of the damping plate 4. By providing the frustum 14, the influence of the radial exciting force on the circular table plate 10 can be reduced, and the acting force thereof is transferred to the axial direction, so that the energy consumption efficiency of the circular table plate 10 can be increased.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (8)
1. An earthquake-resistant building foundation pile is characterized in that: the pile comprises a prefabricated foundation pile body and a bearing platform fixedly arranged at the upper end of the prefabricated foundation pile body, wherein the bearing platform is positioned above the ground, the prefabricated foundation pile body is positioned below the ground, a bottom plate is arranged at the lower end of the prefabricated foundation pile body, a plurality of damping plates are annularly arranged at the outer side of the prefabricated foundation pile body and are arranged in a ring shape along the circumferential direction at intervals, the damping plates extend downwards along the axial direction of the prefabricated foundation pile body, a damping structure is connected between each damping plate and the base plate body, loam is filled in a space between each damping plate and the prefabricated foundation pile body, a plurality of upper sliding chutes are formed in the bottom of the bearing platform, the upper sliding chutes are uniformly distributed along the circumferential direction of the bearing platform, a first sliding block is fixedly arranged at the upper end of each damping plate and is in sliding fit with the upper sliding chutes, a plurality of lower sliding chutes are formed in the upper surface of the bottom plate, and the, and the lower end of each damping plate is fixedly provided with a second sliding block which is in sliding fit with the lower chute.
2. An earthquake-resistant building foundation pile according to claim 1, wherein: the damping plate is formed by connecting a plurality of vertical circular ring plates in series in sequence along the vertical direction, and two adjacent vertical circular ring plates are connected through energy-consuming steel bars.
3. An earthquake-resistant building foundation pile according to claim 2, wherein: in the damping plate, vertical through holes are formed in the vertical circular ring plates, and each energy-consuming reinforcing steel bar penetrates through all the vertical circular ring plates and is fixedly connected with the vertical circular ring plates.
4. An earthquake-resistant building foundation pile according to claim 3, wherein: the damping structure is a tuned mass damper, the tuned mass damper is horizontally arranged between the prefabricated foundation pile body and the damping plate, one end of the tuned mass damper is fixedly connected with the inner wall of the damping plate, and the other end of the tuned mass damper is fixedly connected with the prefabricated foundation pile body.
5. An earthquake-resistant building foundation pile according to claim 4, wherein: and the tuned mass damper is arranged between each vertical circular ring plate and the prefabricated foundation pile body.
6. An earthquake-resistant building foundation pile according to any one of claims 1 to 5, wherein: the damping pile is characterized in that a circular table plate is arranged on the outer side of the lower portion of the damping plate, the circular table plate extends outwards along the radial direction of the prefabricated foundation pile body, a central hole used for yielding of the damping plate is formed in the middle of the circular table plate, and the circular table plate is in sliding fit with the damping plate.
7. An earthquake-resistant building foundation pile according to claim 6, wherein: the outer side of the lower portion of the damping plate is fixedly provided with a third sliding block, the inner wall of the circular table plate is provided with a vertical sliding groove, and the third sliding block is in sliding fit with the vertical sliding groove.
8. An earthquake-resistant building foundation pile according to claim 7, wherein: the upper end of the circular table plate is integrally provided with a frustum, and the inclined surface of the frustum inclines towards one side of the damping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010691116.XA CN111764376B (en) | 2020-07-17 | 2020-07-17 | Earthquake-resistant building foundation pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010691116.XA CN111764376B (en) | 2020-07-17 | 2020-07-17 | Earthquake-resistant building foundation pile |
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| CN111764376A true CN111764376A (en) | 2020-10-13 |
| CN111764376B CN111764376B (en) | 2022-03-01 |
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| CN202010691116.XA Active CN111764376B (en) | 2020-07-17 | 2020-07-17 | Earthquake-resistant building foundation pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112942608A (en) * | 2021-01-27 | 2021-06-11 | 四川省建筑科学研究院有限公司 | Building structure anti-seismic energy dissipater |
| CN115404851A (en) * | 2022-09-26 | 2022-11-29 | 温州瓯海展新建设有限公司 | Green and environment-friendly building foundation pile structure convenient for field assembly and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112942608A (en) * | 2021-01-27 | 2021-06-11 | 四川省建筑科学研究院有限公司 | Building structure anti-seismic energy dissipater |
| CN115404851A (en) * | 2022-09-26 | 2022-11-29 | 温州瓯海展新建设有限公司 | Green and environment-friendly building foundation pile structure convenient for field assembly and construction method thereof |
| CN115404851B (en) * | 2022-09-26 | 2023-08-11 | 温州瓯海展新建设有限公司 | Environment-friendly foundation pile structure convenient for on-site assembly and construction method thereof |
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| CN111764376B (en) | 2022-03-01 |
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Effective date of registration: 20231220 Address after: No. 930, Lingshi Road, Jing'an District, Shanghai 200040 Patentee after: SHANGHAI GEOTECHNICAL ENGINEERING & GEOLOGY INSTITUTE Co.,Ltd. Address before: 066000 No. 438, Hebei Avenue, Qinhuangdao, Hebei Patentee before: Yanshan University |
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