CN113322986A - Pile-anchor-beam composite energy dissipation and shock absorption structure system and construction method - Google Patents
Pile-anchor-beam composite energy dissipation and shock absorption structure system and construction method Download PDFInfo
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- 230000035939 shock Effects 0.000 title claims abstract description 54
- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 53
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims description 26
- 239000011435 rock Substances 0.000 claims abstract description 42
- 238000013016 damping Methods 0.000 claims abstract description 21
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 230000005489 elastic deformation Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 20
- 230000003014 reinforcing effect Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 206010057175 Mass conditions Diseases 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005452 bending 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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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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
- E02D31/08—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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- 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
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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
- E02D5/74—Means for anchoring structural elements or bulkheads
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Abstract
The invention relates to a pile-anchor-beam composite energy dissipation and shock absorption structure system, which comprises: the anchor bar is anchored in the rock mass to be reinforced; the connecting beam is arranged on the surface of the rock mass to be reinforced in a through-length mode and connected with the anchoring ends of the anchor bars in the same row; the bearing piles are arranged on the outer side of the slope of the rock mass to be reinforced, and each bearing pile corresponds to the position of one or a row of corresponding anchor bars; and the anchoring end of the anchor bar is provided with an energy dissipation and shock absorption anchor head, the anchor bar is anchored on the connecting beam through the energy dissipation and shock absorption anchor head, the outer side of the energy dissipation and shock absorption anchor head is provided with a leveling base plate, the leveling base plate is connected with one end of a damping device, and the other end of the damping device is connected with the side surface of the bearing pile. The invention can consume earthquake energy, prevent dangerous rock bodies from collapsing due to overlarge earthquake impact force separated from matrix bedrock, reduce mechanical and geometric parameters of the protective structure and avoid collapse disasters to the maximum extent under the aim of improving economic benefits.
Description
Technical Field
The invention relates to the technical field of energy dissipation and shock absorption of building structures, in particular to a pile-anchor-beam composite energy dissipation and shock absorption structure system and a construction method.
Background
Geological disasters in mountainous areas of China occur frequently, and earthquakes are important factors for the occurrence of the disasters, such as collapse, landslide and the like. Anchor cables, lattice beams, anti-slide piles and the like are common supporting structures for reinforcing dangerous rock masses and landslide masses, traditional single or multiple supporting structures are adopted for potential dangerous rock masses with large volume to resist the impact of earthquake dynamic load, the investment of large cost is needed, and due to insufficient prediction of earthquake dynamic randomness, the supporting structure is difficult to design, or insufficient in design, or excessive and wasted.
The prior Chinese patent application CN104746515A discloses a reverse prestressed anchor cable reinforcing structure, which has certain safety in construction and can avoid risks in construction, but the patent does not relate to the effectiveness of prestressed anchor cable reinforcement under the action of earthquake. Under the impact of earthquake power reciprocating load, the deformation motion of dangerous rock mass is comparatively violent, and above-mentioned device does not necessarily can exert effectual effect.
The prior Chinese utility model patent CN207405635U discloses an anti-slide structure for treating a bedding landslide by adding a plurality of rows of anti-slide anchor rods on an anti-slide pile, which is an anti-slip structure formed by combining anti-slip piles, anti-slip anchor rods, soil nailing walls or soil retaining plates, is used for preventing the slip of a slip body, has the characteristics of quick, safe and convenient construction, but the patent technology is mainly suitable for supporting landslide mass under emergency situations, is not suitable for supporting potential dangerous rock mass in strong earthquake areas, the effectiveness of the support structure under the action of earthquake is not related, the support structure form related by the patent is an integral structure formed by combining anti-slide piles, anchor rods, soil retaining plates and other structures, the anti-slide force, the anti-impact force and the like are completely borne by the integral structure, once the bearing range is exceeded, a single structure is damaged, the support effect of the integral structure is greatly reduced, and the single structure is not suitable to be replaced after being damaged, so that the economic benefit is not facilitated.
Another prior chinese utility model patent CN207452895U discloses a high slope stake anchor supporting construction, which is suitable for high and steep slope, solves the problem that along with the increase of supporting height, the supporting construction bears great soil pressure, but does not involve the content about the earthquake action, and under the earthquake action, this supporting construction is effective unable to verify to the reinforcement of slope, rock mass, and is not suitable for the support of dangerous rock mass.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides a pile-anchor-beam composite energy-dissipating and shock-absorbing structure system and a construction method thereof, so as to solve one or more problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention firstly provides a pile-anchor-beam composite energy dissipation and shock absorption structure system, which comprises:
the anchor bar is anchored in the rock mass to be reinforced;
the connecting beam is arranged on the surface of the rock mass to be reinforced in a through-length mode and connected with the anchoring ends of the anchor bars in the same row;
the bearing piles are arranged on the outer side of the slope of the rock mass to be reinforced, and each bearing pile corresponds to the position of one or a row of corresponding anchor bars;
and the anchoring end of the anchor bar is provided with an energy dissipation and shock absorption anchor head, the anchor bar is anchored on the connecting beam through the energy dissipation and shock absorption anchor head, the outer side of the energy dissipation and shock absorption anchor head is provided with a leveling base plate, the leveling base plate is connected with one end of a damping device, and the other end of the damping device is connected with the side surface of the bearing pile.
Preferably, the anchor bars are prestressed anchors or anchor cables.
Preferably, the connecting beam is a steel beam or a reinforced concrete beam, and a through hole for the anchor bar to penetrate through is reserved on the beam.
Preferably, an inter-pile connecting beam is connected between the bearing piles.
Preferably, the bearing pile is a reinforced concrete cast-in-place pile.
Preferably, the leveling base plate is connected with one end of the damping device through a connecting piece, and the other end of the damping device is connected to the side face of the bearing pile through another connecting piece.
Preferably, the damping device is a hydraulic damper.
Preferably, the energy dissipation and shock absorption anchor head is an anchor head capable of generating elastic deformation when stressed.
The invention further provides a method for constructing the pile-anchor-beam composite energy dissipation and shock absorption structure system, which comprises the following steps:
firstly, drilling anchor cable holes in a rock mass to be reinforced, and installing anchor cables;
constructing a connecting beam among a plurality of anchor cables in the same row on the surface of the rock mass to be reinforced;
thirdly, installing an energy dissipation and shock absorption anchor head at the end head of the anchor cable on the connecting beam;
tensioning the anchor cable to a designed prestress, and fixing the anchor cable by using an anchor bar fixing head;
fifthly, mounting a leveling base plate on the outer side surface of the energy dissipation and shock absorption anchor head;
step six, installing a connecting piece on the outer side surface of the leveling base plate, completing the pouring construction of the bearing pile in the process, and installing another connecting piece on the side surface of the bearing pile, which is opposite to the connecting piece;
and step seven, installing a hydraulic damper between the two connecting pieces.
Preferably, the inter-pile connecting beam is poured between adjacent bearing piles.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a pile-anchor-beam composite structure system with energy dissipation and shock absorption functions, which has the main function that under the reciprocating impact of earthquake power, the pile-anchor-beam composite structure for reinforcing dangerous rock masses can consume earthquake energy through the deformation of energy dissipation and shock absorption anchor heads and the pressure action of hydraulic dampers, so that dangerous rock masses are prevented from collapsing due to the fact that overlarge earthquake impact force is separated from matrix bedrocks, mechanical and geometric parameters of a protective structure can be reduced, and the occurrence of collapse disasters is avoided to the greatest extent under the aim of improving economic benefits. The energy dissipation shock absorption anchor head and the hydraulic damper are in a series connection state, the energy dissipation shock absorption anchor head is a first-stage device, and the hydraulic damper is a second-stage device. Under the action of small earthquake, energy dissipation and shock absorption are carried out through elastic deformation of the energy dissipation and shock absorption anchor head; under the action of a medium earthquake, the energy dissipation and shock absorption anchor head fails after entering a plastic state from an elastic state, and at the moment, the hydraulic damper plays a part of roles to consume earthquake energy; under the action of a large earthquake, after the energy dissipation and shock absorption anchor head fails, the hydraulic damper plays a full role, the earthquake energy is consumed completely, and even if the earthquake energy is not consumed completely, the whole structure can still be ensured not to collapse under the combined action of the pile-anchor-beam composite structure system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, shall fall within the scope covered by the technical contents disclosed in the present invention.
FIG. 1 is a side view schematic of a pile-anchor-beam composite structure according to one embodiment of the present invention;
fig. 2 is a schematic top view of the pile-anchor-beam composite structure of the present invention.
In the figure, 1-rock mass, 2-anchor bar, 3-connecting beam, 4-energy dissipation and shock absorption anchor head, 5-anchor bar fixing head, 6-damping device, 7-leveling base plate, 8-connecting piece, 9-bearing pile and 10-inter-pile connecting beam.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It should also be understood that the terms "mounted," "connected," "fixed," and the like are intended to be broadly construed, and may include, for example, a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly specified or limited, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplification of description, but do not indicate or imply that the device, component, or structure referred to must have a particular orientation, be constructed in a particular orientation, or be operated, and should not be construed as limiting the present invention.
The conventional supporting and reinforcing structure can also reinforce and support dangerous rock masses under the action of small earthquakes and medium earthquakes, but can not effectively reinforce and support dangerous rocks under the action of large earthquakes or the superposition of frequent small and medium earthquakes. Even if the support dangerous rock can be effectively reinforced and supported under the conditions of large earthquake and frequent earthquake in small earthquake, the construction cost is high or the structural form is complex.
In view of the insufficient safety performance consideration of the reinforced rock mass under the action of an earthquake in the prior art, the support reinforcing structure is not suitable for supporting dangerous rock masses in strong earthquake areas and earthquake frequency areas, particularly large-volume potential dangerous rock masses in strong earthquake areas, and a simple and effective collapse prevention and control system does not exist.
On the basis, referring to fig. 1-2, the present invention firstly provides a pile-anchor-beam composite energy-dissipating and shock-absorbing structural system, which comprises:
the anchor bars 2 are anchored in the rock mass 1 to be reinforced, the rock mass 1 is usually a dangerous rock mass, can be a foundation pit side slope rock mass which needs to continuously exist for a long time in civil or industrial building engineering, and can also be a rock mass side slope which needs to be reinforced in mine or highway engineering; the anchor bar 2 is specifically selected according to the rock mass condition, and can be an anchor rod structure or an anchor cable.
The connecting beam 3 is arranged on the surface of the rock mass to be reinforced in a through-length mode, is connected with the anchoring ends of the same row of anchor bars, and is used for connecting the row of anchor bars into a whole through the connecting action of the connecting beam so as to enhance the integrity of the anchoring action; the connecting beam can be a cast-in-place reinforced concrete beam, and a steel beam, such as an I-steel beam, can also be adopted. The beam is provided with a through hole for the anchor bar to penetrate through.
The bearing piles 9 are arranged on the outer side of the slope of the rock mass to be reinforced, each bearing pile corresponds to one of the corresponding anchor bars or one row of the corresponding anchor bars, as shown in fig. 2, the bearing piles 9 are away from the slope of the rock mass to be reinforced by a certain distance, and the specific distance is determined by design.
With continued reference to fig. 1, in the present invention, an energy dissipation shock absorption anchor head 4 is arranged at the anchoring end of an anchor bar 2, the anchor bar 2 is anchored on a connecting beam 3 through the energy dissipation shock absorption anchor head 4, a leveling backing plate 7 is arranged at the outer side of the energy dissipation shock absorption anchor head 4, the leveling backing plate 7 is connected with one end of a damping device 6, and the other end of the damping device 6 is connected with the side surface of a bearing pile 9.
In the present invention, the damping device 6 is a hydraulic damper, but may be other damping structures.
The pile-anchor-beam composite structure system provided by the invention adopts two-stage energy dissipation and shock absorption devices, wherein an energy dissipation and shock absorption anchor head is connected with a hydraulic damper in series, the energy dissipation and shock absorption anchor head is a first-stage device, and the hydraulic damper is a second-stage device. Under the action of small earthquake, energy dissipation and shock absorption are carried out through elastic deformation of the energy dissipation and shock absorption anchor head; under the action of a medium earthquake, the energy dissipation and shock absorption anchor head fails after entering a plastic state from an elastic state, and at the moment, the hydraulic damper plays a part of roles to consume earthquake energy; under the action of a large earthquake, after the energy dissipation and shock absorption anchor head fails, the hydraulic damper plays a full role, the earthquake energy is consumed completely, and even if the earthquake energy is not consumed completely, the whole structure can still be ensured not to collapse under the combined action of the pile-anchor-beam composite structure system. Therefore, the dangerous rock mass can be effectively prevented from breaking down due to the fact that overlarge earthquake impact force is separated from the matrix bedrock.
In specific implementation, the leveling cushion plate 7 can be connected with one end of the damping device 6 through a connecting piece 8, and the other end of the damping device 6 is connected with the side surface of the bearing pile 9 through another connecting piece 8. It should be noted that the connecting member 8 of the present invention is used for connecting the damping device with the pile body and the backing plate, and the specific structure thereof is not fixed, and the connecting manner is determined according to the specific structure of the connecting member, such as welding, bolting, or using embedded parts for connection. When the detachable connecting structures such as bolts are adopted, if the supporting and reinforcing structures do not need to exist in the future, the energy dissipation and shock absorption anchor heads, the hydraulic dampers and the like can be detached and reused, and even the section steel connecting beams can be detached and recycled together.
It should be noted that the energy dissipation and shock absorption anchor head 4 is an anchor head capable of generating elastic deformation when being stressed, and the specific structure is not limited, as long as the energy dissipation and shock absorption anchor head can generate elastic deformation when being stressed, so as to achieve the purpose of consuming seismic energy. In the present invention, the energy-dissipating shock-absorbing anchor head 4 preferably employs an anchoring device similar to that mentioned in the inventor's prior patent application CN202011495355.4 (anchoring device, pre-stressed anchoring structure and construction method thereof). The anchor device comprises two steel plates which are oppositely arranged, via holes for the anchor bars to pass through are correspondingly formed in the two steel plates, one or more elastic pieces or elastic piece sets are arranged between the two steel plates, the two ends of each elastic piece or each elastic piece set are respectively connected with the two steel plates or abutted against the two steel plates, one steel plate is tightly attached to the connecting beam during use, and the other steel plate is provided with a leveling base plate. The elastic member is elastically deformed under the action of the earthquake, thereby consuming the earthquake energy. The elastic member is preferably a bent structure, and is formed by bending a steel plate, and the steel plate can be further designed into a structure with different thicknesses, such as a middle thickness and two thin ends. Of course, according to different forms and composition structures of the energy dissipation and shock absorption anchor head, a spring-type energy dissipation and shock absorption anchor head can also be adopted.
As shown in fig. 1, the energy dissipation shock absorption anchor head 4 itself can be provided with an outer frame as a protective cover to prevent corrosion or corrosion due to long-term exposure, and the front surface of the energy dissipation shock absorption anchor head 4 is provided with a leveling cushion plate 7 and then is sealed by the leveling cushion plate 7, and meanwhile, the anchor bar fixing head is sealed inside.
In the invention, the bearing piles 9 are reinforced concrete cast-in-place piles, and inter-pile connecting beams can be further constructed among the bearing piles to connect a plurality of bearing piles in the same row, so that the integrity of the supporting function of the pile body is improved.
The construction method of the pile-anchor-beam composite energy dissipation and shock absorption structure system is described by taking prestressed anchor cable support as an example, and specifically comprises the following steps:
drilling anchor cable holes in the rock mass 1 to be reinforced, and installing anchor cables;
constructing a connecting beam 3 among a plurality of anchor cables in the same row on the surface of the rock mass to be reinforced;
an energy dissipation and shock absorption anchor head 4 is arranged at the end head of the anchor cable on the connecting beam 3;
tensioning the anchor cable to a designed prestress, and fixing the anchor cable by using an anchor bar fixing head;
a leveling base plate 7 is arranged on the outer side surface of the energy dissipation and shock absorption anchor head 4;
a connecting piece 8 is arranged on the outer side surface of the leveling cushion plate 7;
in the construction process of the steps, the pouring construction of the bearing pile 9 can be synchronously carried out, the specific sequence depends on the construction period of two sides of the hydraulic damper, the construction is carried out first in a long period, and the construction can also be carried out simultaneously, and after the pouring construction of the bearing pile 9 is finished, a connecting piece 8 is arranged on the side surface of the bearing pile 9 facing the anchor cable;
and finally, a hydraulic damper is arranged between the left connecting piece and the right connecting piece 8, and when the hydraulic damper is finally arranged, the left side and the right side are ensured to have installation conditions.
The invention can further pour the inter-pile connecting beam 10 between the adjacent bearing piles of the plurality of bearing piles 9.
Compared with the protection forms of anchor rods, lattice beams, grouting treatment and the like, the invention has better protection effect and better capability of reinforcing dangerous rocks under the action of an earthquake. Compared with the protection form of the single slide-resistant pile, the size, the number and the manufacturing cost of the bearing pile are much smaller. In the protection form of the single anti-slide pile, acting force is completely applied to the anti-slide pile, so that a plurality of anti-slide piles need to be arranged, and after two-stage energy dissipation measures are arranged, the size of the bearing pile does not need to be large, the level of concrete for pouring, arranged reinforcing steel bars and the like does not need to be high, and the mechanical parameters of the anti-slide pile can be small.
According to the method, the construction method of the energy dissipation and shock absorption structure system is simple, the supporting piles are combined on the original anchor cable supporting system, the pile anchor supports are mutually independent and do not interfere with each other, construction can be carried out simultaneously, and the construction period is short. Excessive complex structures do not need to be added between the pile anchors, the sizes of the energy dissipation damping anchor heads and the hydraulic dampers are small, too large construction space does not need to be reserved between the pile anchors, the occupied site is small, related components can be disassembled and recycled, and the economic benefit is good.
Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations and modifications can be made, which are consistent with the principles of the invention, from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A pile-anchor-beam composite energy and shock dissipating structural system comprising:
the anchor bar is anchored in the rock mass to be reinforced;
the connecting beam is arranged on the surface of the rock mass to be reinforced in a through-length mode and connected with the anchoring ends of the anchor bars in the same row;
the bearing piles are arranged on the outer side of the slope of the rock mass to be reinforced, and each bearing pile corresponds to the position of one or a row of corresponding anchor bars;
and the anchoring end of the anchor bar is provided with an energy dissipation and shock absorption anchor head, the anchor bar is anchored on the connecting beam through the energy dissipation and shock absorption anchor head, the outer side of the energy dissipation and shock absorption anchor head is provided with a leveling base plate, the leveling base plate is connected with one end of a damping device, and the other end of the damping device is connected with the side surface of the bearing pile.
2. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
the anchor bars are prestressed anchor rods or anchor cables.
3. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
the connecting beam is a steel beam or a reinforced concrete beam, and a through hole for the anchor bar to penetrate through is reserved on the beam.
4. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
and an inter-pile connecting beam is connected between the bearing piles.
5. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
the bearing pile is a reinforced concrete cast-in-place pile.
6. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
the leveling base plate is connected with one end of the damping device through a connecting piece, and the other end of the damping device is connected to the side face of the bearing pile through another connecting piece.
7. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
the damping device is a hydraulic damper.
8. The pile-anchor-beam composite energy-dissipating and shock-absorbing structural system according to claim 1, wherein:
the energy dissipation and shock absorption anchor head is an anchor head capable of generating elastic deformation when stressed.
9. A method for constructing the pile-anchor-beam composite energy and shock absorbing structural system according to any one of claims 1 to 8, comprising the steps of:
firstly, drilling anchor cable holes in a rock mass to be reinforced, and installing anchor cables;
constructing continuous beams among a plurality of anchor cables in the same row on the surface of the rock mass to be reinforced;
thirdly, installing an energy dissipation and shock absorption anchor head at the end head of the anchor cable on the connecting beam;
tensioning the anchor cable to a designed prestress, and fixing the anchor cable by using an anchor bar fixing head;
fifthly, mounting a leveling base plate on the outer side surface of the energy dissipation and shock absorption anchor head;
step six, installing a connecting piece on the outer side surface of the leveling base plate, completing the pouring construction of the bearing pile in the process, and installing another connecting piece on the side surface of the bearing pile, which is opposite to the connecting piece;
and step seven, installing a hydraulic damper between the two connecting pieces.
10. The construction method according to claim 9, wherein:
and pouring inter-pile connecting beams between adjacent bearing piles.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718803A (en) * | 2021-09-14 | 2021-11-30 | 应急管理部国家自然灾害防治研究院 | A novel energy dissipation formula stake anchor structure for slope antidetonation is consolidated |
| CN114134913A (en) * | 2021-11-10 | 2022-03-04 | 大连理工大学 | Construction method of prestress recoverable anti-seismic anchor rod for slope support |
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| CN113718803A (en) * | 2021-09-14 | 2021-11-30 | 应急管理部国家自然灾害防治研究院 | A novel energy dissipation formula stake anchor structure for slope antidetonation is consolidated |
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| CN115822312A (en) * | 2022-12-30 | 2023-03-21 | 央固工程科技（上海）有限公司 | Connecting structure and method for damper support and existing concrete beam column joint |
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