CN113863299B - Inhaul cable structure, cable body, anchor cable structure and anchor cable construction method - Google Patents
Inhaul cable structure, cable body, anchor cable structure and anchor cable construction method Download PDFInfo
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- CN113863299B CN113863299B CN202111363498.4A CN202111363498A CN113863299B CN 113863299 B CN113863299 B CN 113863299B CN 202111363498 A CN202111363498 A CN 202111363498A CN 113863299 B CN113863299 B CN 113863299B
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- 238000004140 cleaning Methods 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims description 5
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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
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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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
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a stay cable structure, a cable body, an anchor cable structure and an anchor cable construction method, which aim to solve the problem that the existing anchor cable structure cannot simultaneously install and fix a plurality of cable bodies, wherein the stay cable structure comprises a base body, a positioning part and a driving part; the positioning parts are respectively rotatably connected with the base body, connecting holes for being in threaded connection with the positioning heads of the cable bodies are formed in the positioning parts, and when the positioning parts rotate relative to the base body, the rotating direction of the positioning parts is around the axial direction of the connecting holes; the positioning parts are respectively in transmission connection with the driving part, and when the driving part is driven to enable transmission connection to perform transmission action, all the positioning parts are driven by the driving part to rotate around the axis of the connecting hole. The invention can realize that a plurality of cable bodies are simultaneously installed and fixed on one anchor cable structure, and the plurality of cable bodies have synchronism when being pulled, so that the mechanical properties of the plurality of installed cable bodies can be kept basically the same, thereby improving the protection effect of the anchor cable structure on the side slope.
Description
Technical Field
The invention relates to the technical field of building engineering, in particular to a guy cable structure, a cable body, an anchor cable structure and an anchor cable construction method.
Background
With the increasing complexity of geological conditions, it is increasingly difficult to support cliffs. In recent years, anchor cable supports are widely applied in developed mining countries such as the United kingdom, Australia and the like, and anchor cable support technology develops rapidly, particularly in the aspects of slope treatment, traffic tunnels, hydropower, water conservancy, military industry, building foundation pits and the like. The anchor cable is used as a concealed project, and two or three cable bodies are connected or bound by workers before construction is carried out each time in order to improve the stability and the durability of anchor cable support, and then the anchor cable is connected with an anchor structure. The existing anchor structure can only realize single sequential installation aiming at two or three or even a plurality of cable bodies, so that the stress of each cable body is different after the cable bodies are installed.
Disclosure of Invention
The invention aims to solve the technical problem of how to realize simultaneous installation of a plurality of cable bodies in an anchor cable structure, and aims to provide a stay cable structure, a cable body, an anchor cable structure and an anchor cable construction method.
The invention is realized by the following technical scheme:
one aspect of the present invention provides a cable structure, including:
a base;
the positioning parts are rotatably connected with the base body, connecting holes for connecting positioning heads of the cable body in a threaded manner are formed in the positioning parts, and the positioning parts rotate around the axes of the connecting holes relative to the base body; and
and the positioning parts are in transmission connection with the driving part respectively.
In some embodiments, the drive portion is rotatably coupled to the base.
In some embodiments, the positioning portion is provided with a first engaging tooth, and the driving portion is provided with a second engaging tooth, wherein the first engaging tooth and the second engaging tooth are engaged with each other to form the transmission connection.
In some embodiments, the positioning portion is disposed in the driving portion, and the first engaging teeth are engaged with the second engaging teeth.
In some embodiments, the base body is provided with a first annular runner, and the drive portion is provided with a first sliding block located within the first annular runner.
In some embodiments, the cover body is fixedly arranged on the base body, the driving portion is rotatably connected with the cover body, and a plurality of guide holes corresponding to the connecting holes are formed in the cover body.
In some embodiments, the cover is provided with a second annular chute, and the drive portion is provided with a second sliding block located within the first annular chute.
In some embodiments, a mount is included for rotatably coupling the positioning portion;
the mounting seat is connected with the base body; or
The mounting seat is respectively connected with the base body and the cover body.
In some embodiments, the mounting seat includes a first base and a second base respectively disposed at two sides of the positioning portion;
the first base is connected with the base body, the first base is rotatably connected with the positioning part, and the first base is provided with a first avoidance hole corresponding to the connecting hole;
the second base with the lid is connected, the second base with location portion rotatable coupling, the second base be equipped with the second that the connecting hole corresponds dodges the hole.
In some embodiments, the positioning portion is provided with a third annular sliding groove, and the first base is provided with a third sliding block body located in the third annular sliding groove;
the location portion still is equipped with fourth annular spout, the second base is equipped with and is located the fourth sliding block body of fourth annular spout.
In some embodiments, the drive portion is provided with a plurality of anti-slip stripes for contacting the hand.
The invention provides a cable body, wherein a positioning head is arranged at the end part of the cable body and is used for being in threaded connection with a connecting hole of a cable structure.
In another aspect, the present invention provides an anchor cable structure, including:
any of the above-described cable structures; and
a cable as described above.
In some embodiments, the anchor cable structure comprises:
the guide frame is arranged on the base body, the guide frame is provided with a grouting space communicated with the outside of the guide frame, and the guide frame is used for guiding the anchor cable structure when the anchor cable structure penetrates through the drill hole;
and the grouting pipe is communicated with the grouting space.
In some embodiments, the anchor cable structure is coaxially provided with a first receiving hole penetrating the cover body and a second receiving hole penetrating the base body, and the first receiving hole and the second receiving hole are respectively used for passing through the grouting pipe.
In some embodiments, the anchor cable structure comprises a positioning frame arranged on the base body, and the positioning frame is positioned in the grouting space;
slip casting pipe one end is equipped with the elastic component, when the slip casting pipe produced axial displacement, the elastic component can contradict in the locating rack.
In some embodiments, the outer wall of the grouting pipe is provided with a fixture block;
one end of the hole wall of the first bearing hole is provided with a sliding groove matched with the clamping block, the hole wall is coaxially provided with an annular groove to form a clamping ring communicated with the sliding groove, and the clamping ring is matched with the clamping block.
In another aspect, the present invention provides an anchor cable construction method for installing the anchor cable structure on a slope, including the following steps:
arranging anchoring holes on the slope surface of the side slope;
assembling an anchor cable structure and installing the anchor cable structure in the anchor hole;
cleaning holes by adopting air pressure, and replacing slurry in the anchoring holes;
and grouting into the anchoring hole through the grouting hole, and simultaneously pulling out the grouting pipe until grout flows out of the anchoring hole opening.
In some embodiments, the anchor cable construction is assembled, including the following:
mounting grouting pipes in the first bearing holes and the second bearing holes until the elastic parts abut against the positioning frame;
the fixed disc is sleeved on the grouting pipe;
the positioning head of the cable body penetrates through the fixed disc and is connected with the positioning part.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the plurality of positioning parts in the inhaul cable structure are in transmission connection with the driving part at the same time, when the driving part is driven, the plurality of positioning parts can be driven to rotate at the same time, the positioning heads of the inhaul cable bodies are in threaded connection with the positioning parts, the positioning heads can generate relative displacement through the rotation of the positioning parts, so that the plurality of inhaul cable bodies are pulled at the same time, and each inhaul cable body bears the same pulling force from the inhaul cable structure after the inhaul cable bodies are installed due to the synchronous rotation of the plurality of positioning parts, so that the mechanical stability of the whole inhaul cable body can be ensured, and the protection effect of the whole inhaul cable body structure on a side slope is improved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic overall structural diagram of a cable bolt structure provided in an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure view of a cable bolt structure according to an embodiment of the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 2 according to the present invention;
fig. 4 is a schematic structural diagram of an anchor cable structure according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a cable body in an installation state according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a cable structure according to an embodiment of the present invention;
fig. 7 is a schematic view of an explosion structure of an anchor cable structure according to an embodiment of the present invention;
fig. 8 is a schematic view of an exploded structure of a pre-stressed assembly according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an inserted state of a grouting pipe according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a positioning portion according to an embodiment of the present invention;
fig. 11 is a schematic cross-sectional structure diagram of a positioning portion according to an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
100-anchor cable arrangement, 110-guide frame, 120-connecting shell, 1201-first receiving bore, 1202-second receiving bore, 122-connecting cavity, 1221-first base, 1222-second base, 123-guide bore, 124-through slot, 1251-first annular runner, 1252-second annular runner, 126-collar, 127-runner, 130-cable body, 131-positioning head, 140-grouting pipe, 200-fastening component, 210-driving part, 211-second engaging tooth, 2121-first sliding block, 2122-second sliding block, 213-anti-slip strip, 220-positioning part, 2201-third annular runner, 2202-first through slot, 2203-fourth annular runner, 2204-second through slot, 221-connecting bore, 222-first engaging tooth, 300-prestress component, 310-positioning frame, 311-through hole, 320-elastic element and 330-clamping block.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 7, in an embodiment of the cable structure of the present invention, the cable structure includes a base, a positioning portion 220 and a driving portion 210; the positioning parts 220 are respectively connected with the base body in a rotatable manner, the positioning parts 220 are provided with connecting holes 221 used for being in threaded connection with the positioning heads 131 of the cable body 130, and when the positioning parts 220 rotate relative to the base body, the rotating direction of the positioning parts is around the axial direction of the connecting holes 221; the positioning parts 220 are respectively connected with the driving part 210 in a transmission manner to form the fastening assembly 200 for fixing the cable 130, and when the driving part 210 is driven to perform transmission operation in the transmission manner, all the positioning parts 220 are driven by the driving part 210 to rotate around the axis of the connecting hole 221.
It can be understood that the positioning head 131 in this embodiment is a threaded end capable of being threadedly engaged with the connection hole 221.
When assembling the cable structure and the cable body 130, firstly, all the positioning heads 131 are inserted into the connecting holes 221 to perform the preliminary positioning of the cable body 130, and in order to ensure that the positioning heads 131 and the positioning parts 220 have a fixed relative position relationship, the following operations can be performed: each positioning head 131 rotates for N turns relative to the corresponding connecting hole 221, N is positive, it is ensured that the positioning head 131 cannot automatically slide out from the connecting hole 221, then the driving part 210 is driven, the driving part 210 simultaneously drives each positioning part 220 to rotate around the axis of the connecting hole 221, because the connecting hole 221 and the positioning head 131 are in threaded connection, relative displacement can occur between the positioning head 131 and the positioning part 220, the cable body 130 is pulled, and the distance of pulling each cable body 130 is equal.
Compared with the mode that the cable bodies are sequentially fixed by one cable body, the cable structure provided by the embodiment is more convenient to install the cable bodies 130, can realize the installation and fixation of a plurality of cable bodies 130 at the same time, and is higher in installation efficiency; and the displacement of the positioning head 131 of each cable 130 pulled is the same, under the condition of considering the processing error of the cable 130, when the cable 130 is applied to slope protection, the length of the tension segment of the cable 130 can be ensured to be the same, and the stretching length of the cable 130 is the same, so that the mechanical stability of the whole cable 130 can be ensured, and the effectiveness of the cable 130 in slope protection can be further ensured.
It should be noted that the driving portion 210 described in this embodiment may be connected to the base to improve the structural integrity of the cable structure, or may be used as a single driving portion 210 to make the structure of the cable structure simpler, and is specially used for being simultaneously in transmission connection with the positioning portion 220 and transmitting to the positioning portion 220.
With continued reference to fig. 7, in some embodiments, the driving portion 210 is movably connected to the base.
Since the driving portion 210 needs to be transmitted to the positioning portion 220, the driving portion 210 is movably connected with at least the base body, and the moving manner of the driving portion 210 relative to the base body may be sliding or rotating. The transmission mode between the driving part 210 and the positioning part 220 may be friction transmission or gear transmission, and in order to ensure transmission efficiency and prevent slipping, gear transmission is preferably adopted.
Specifically, the positioning portion 220 is externally provided with an annular first engaging tooth 222, the center of a circle surrounded by the first engaging tooth 222 is located on the axis of the connecting hole 221, and the plane of the first engaging tooth 222 is perpendicular to the axis of the connecting hole 221, so that the positioning portion 220 can be ensured to rotate around the axis of the connecting hole 221 in a driven state, the driving portion 210 is provided with an annular second engaging tooth 211, the second engaging tooth 211 and the first engaging tooth 222 are matched with each other to realize a transmission function,
it can be understood that, as for the above-mentioned second engaging teeth 211 on the driving part 210, they can be configured as an external gear ring, and can also be configured as an internal gear ring, and the difference between them is that: when the external gear ring is arranged, the positioning part 220 is externally engaged with the driving part 210, and the positioning part 220 is positioned around the driving part 210; when the ring gear is provided, the positioning portion 220 engages with the driving portion 210, and the positioning portion 220 is located inside the driving portion 210.
In some embodiments, the second engagement teeth 211 are provided as ring gears, that is, the first engagement teeth 222 are engaged with the second engagement teeth 211, and the positioning portion 220 is located inside the driving portion 210.
With the arrangement, the driving part 210 can be driven by the outer side surface of the driving part, interference on the cable body 130 on the connecting hole 221 is avoided, and the structure is simple and the operation is convenient.
Specifically, the positioning portion 220 is configured in the shape of a driving wheel, a first engaging tooth 222 is disposed on a side surface of the positioning portion 220, the driving portion 210 is configured as a connecting sleeve in the shape of a sleeve ring, a second engaging tooth 211 is disposed on an inner side surface of the driving portion 210, connecting surfaces with a certain width are reserved on two sides of the second engaging tooth 211 on the inner side surface of the driving portion 210, and the driving portion 210 is sleeved with the base body through the connecting surface on one side thereof, so that the rotatable movement of the driving portion 210 is realized.
In summary, referring to fig. 6, when the driving portion 210 is sleeved on the base, the axial position of the driving portion 210 is considered, so that the following are provided: a first annular runner 1251 is provided in the base, a first sliding block 2121 is provided on said connecting face of the drive part 210, the first sliding block 2121 is fitted in the first annular runner 1251, and the first sliding block 2121 slides in the first annular runner 1251 when the drive part 210 rotates relative to the base.
Returning to fig. 7, in some embodiments, the cable structure further includes a cover, the cover and the base are fixed relatively, the driving portion 210 is rotatably connected to the cover, the cover is provided with guide holes 123 corresponding to the connection holes 221 one by one, and the guide holes 123 are used for the positioning head 131 of the cable 130 to pass through.
The cover body is arranged to protect the drive part 210 and the positioning part 220 from being connected in a transmission manner, the cover body and the base body are relatively fixed, the positioning part 220 is positioned between the cover body and the base body, and the positioning part 220 can be positioned in a relatively closed space after the drive part 210 is rotatably connected with the cover body.
As shown in fig. 6, the driving portion 210 and the cover are connected by a socket joint, specifically, the cover is provided with a second annular sliding groove 1252, the driving portion 210 is provided with a second sliding block 2122, the second sliding block 2122 is located in the second annular sliding groove 1252, and when the driving portion 210 rotates relative to the cover, the second sliding block 2122 slides in the second annular sliding groove 1252.
In order to facilitate the installation of the positioning portion 220, in an example, please refer to fig. 6, fig. 7 or fig. 8, the cover and the base are detachably and fixedly connected to form the connecting housing 120, the connecting housing 120 is integrally cylindrical, the connecting housing 120 has a cylindrical connecting cavity 122 therein, the positioning portion 220 is disposed in the connecting cavity 122, the positioning portion 220 is rotatably connected to the base or the positioning portion 220 is rotatably connected to the base and the cover, respectively, the inner side of the connecting cavity 122 is a cylindrical supporting body, the outer side of the connecting cavity 122 is a housing wall, the housing wall is provided with an annular through slot 124, the through slot 124 is used for avoiding an inner gear ring of the driving portion 210, the housing walls at two sides of the through slot 124 are respectively provided with a first annular chute 1251 and a second annular chute 1252 as a first sliding block 2121, a second sliding block 1252 on the driving portion 210, and the first sliding block 1251, a second sliding block 1252 is disposed on the driving portion 210, The fitting groove of the second sliding block 2122 is used for the first sliding block 2121 and the second sliding block 2122 to slide in a rotating manner, the end face of one axial end of the connecting shell 120 is provided with a plurality of guide holes 123, and the guide holes 123 correspond to the connecting holes 221 in a one-to-one manner in the axial view angle of the connecting shell 120.
It will be appreciated that the through slot 124 is formed by two-part walls, and the connection between the cover and the base is mainly achieved by the support, which may be a separate component, an integral structure with the base, an integral structure with the cover, or a structure divided into two parts to be respectively integral with the base and the cover.
Referring to fig. 6 or fig. 7, in some embodiments, the cable structure further includes a mounting seat, the mounting seat is used for mounting the positioning portion 220, the positioning portion 220 is rotatably connected to the mounting seat, and the mounting seat may be fixedly connected to the base body, or may be fixedly connected to the base body and the cover body, respectively.
Specifically, the mounting seat is composed of a first base 1221 and a second base 1222, the first base 1221 is fixedly connected to the base, the positioning portion 220 is rotatably connected to the first base 1221, the first base 1221 is provided with a first avoiding hole corresponding to the connecting hole 221, and the first avoiding hole is used for passing through the positioning head 131 of the cable body 130;
the second base 1222 is fixedly connected to the cover, the positioning portion 220 is rotatably connected to the second base 1222, and the second base 1222 is provided with a second avoiding hole corresponding to the connecting hole 221 for passing through the positioning head 131 of the cable 130.
With this configuration, the connection stability of the positioning part 220 and the connection housing 120 may be increased.
Since the connection hole 221 in the positioning portion 220 needs to be matched with the positioning head 131 of the cable 130, after the positioning portion 220 is installed, the axial two sides of the connection hole 221 should avoid interference of other structures, so the rotational connection between the positioning portion 220 and the installation seat is configured as follows:
referring to fig. 10 and 11, the positioning portion 220 is further configured to be a gear tooth structure, a third annular sliding groove 2201 is formed in one side surface of the positioning portion 220, the third annular sliding groove 2201 is a T-shaped groove, the side surface is further provided with a first through groove 2202 communicated with the third annular sliding groove 2201 for installing a third sliding block, the third annular sliding groove 2201 is concentric with the connecting hole 221, the first base 1221 is provided with a third sliding block, and the third sliding block slides into the third annular groove through the first through groove 2202 to realize rotational sliding, so that the positioning portion 220 and the first base 1221 can rotate; the other side surface of the positioning portion 220 is provided with a fourth annular sliding groove 2203, the fourth annular sliding groove 2203 is a T-shaped groove, the side surface is further provided with a second passing groove 2204 communicated with the fourth annular sliding groove 2203 for installing a fourth sliding block body, the fourth annular sliding groove 2203 is concentric with the connecting hole 221, the second base 1222 is provided with a fourth sliding block body, and the fourth sliding block body slides into the fourth annular sliding groove 2203 through the second passing groove 2204 to realize rotary sliding, so that the positioning portion 220 and the first base 1221 can rotate.
Third sliding block body, fourth sliding block body set up to two at least respectively, when third sliding block body, fourth sliding block body are located third annular spout 2201, fourth annular spout 2203 respectively, on location portion 220's axial visual angle, have at least two third sliding block bodies and two fourth sliding block bodies to be located four angular points of rectangle, so set up, can prevent to fix a position portion 220 around a certain radial direction swing of its self, guarantee location portion 220's structural stability.
Taking the third sliding block as an example for illustration, at least two third sliding blocks are located on a circumference, and the circumference can coincide with the circumference where the third annular sliding groove 2201 is located, so as to avoid the relative sliding between the positioning portion 220 and the first base 1221, and avoid the sharp edge of the third sliding block from contacting with the third annular sliding groove 2201 to cause the clamping phenomenon, the third sliding block is set as a sphere, the third sliding block is connected with the first base 1221 through a connecting rod, the diameter of the connecting rod is adapted to the smaller groove width in the T-shaped groove, and the sharp edge of the third annular sliding groove 2201 is blunted.
In this embodiment, in order to make the third sliding block slide more smoothly in the third annular sliding groove 2201, the third sliding block and the third annular sliding groove 2201 are configured with a steel ball retainer, the third sliding block is rotatably connected to the connecting rod, and rolling friction is formed between the third sliding block and the third annular sliding groove 2201, so as to facilitate sliding.
When the third sliding block body is assembled, the connecting rod with the third sliding block body is first assembled in the third annular sliding groove 2201 through the first through groove 2202, and then the connecting rod is connected to the first base 1221.
The fourth sliding block and the third sliding block are arranged in the same structure, and the description is not repeated here.
As shown in fig. 5 or 7, in some embodiments, the driving part 210 is provided with a plurality of anti-slip stripes 213 for contacting with the hand.
The worker can directly rotate the driving part 210 by hands, and the anti-slip stripes 213 can increase the contact area between the hands and the driving part 210, thereby facilitating the rotation of the driving part 210.
Referring to fig. 5, in an embodiment of the cable body 130 according to the present invention, a positioning head 131 is disposed at an end of the cable body 130 of the present embodiment, and the positioning head 131 is configured to be threadedly connected to a connecting hole 221 of a cable structure.
Specifically, the positioning head 131 is fixedly connected to the cable body 130, the positioning head 131 is a rod body, and the outer wall surface of the rod body is threaded to be in threaded fit with the connecting hole 221 of the positioning portion 220 in the cable structure.
It should be noted that, in order to prevent the positioning head 131 from being pulled excessively to cause the cable 130 to be located in the connecting hole 221 and damage the thread, the diameter of the positioning head 131 is smaller than the diameter of the cable 130, and when the cross sections of the positioning head 131 and the cable 130 contact with the guide hole 123 or the hole edge of the connecting hole 221, the cover body or the positioning portion 220 can limit the cable 130 and prevent the cable 130 from excessively entering the connecting hole 221.
In order to avoid the damage of the cable 130 to the hole edge of the connecting hole 221 or the guiding hole 123, a shaft shoulder with a larger diameter may be further disposed on the end of the positioning head 131 close to the cable 130, so as to increase the contact area between the positioning portion 220 or the guiding hole 123 and the cable 130, thereby avoiding stress concentration.
It will be appreciated that in slope protection projects, the cable 130 is typically provided as a steel strand connected by a plurality of steel cables with opposing knobs fitting closely together.
Referring to fig. 1 to 5, in an embodiment of the anchor cable structure 100 according to the present invention, the anchor cable structure 100 includes any one of the cable structures described above and the cable body 130 described above, and the cable body 130 cooperates with the positioning portion 220 of the cable structure.
The cable body 130 in the anchor cable structure 100 is fixed on the slope, the cable structure is anchored in the stable rock mass within the sliding surface, the cable body 130 passes through the sliding surface of the side slope and is pulled and tensioned by the cable structure, the anti-sliding resistance is directly generated on the sliding surface, the anti-sliding friction resistance is increased, the structural surface is in a compression state, and the integrity of the rock mass of the side slope is improved, so that the mechanical property of the rock mass is fundamentally improved, the displacement of the rock mass is effectively controlled, the stability of the rock mass is promoted, and the purposes of regulating bedding, sliding slope, dangerous rocks and dangerous rocks are achieved.
That is to say, with the anchor cable structure 100 provided in this embodiment, the pulling forces of the cable structures from both ends borne by each cable body 130 are the same, and under the condition that the processing error of the cable bodies 130 is considered, the lengths of each installed cable body 130 are the same, that is, the stretching lengths of each cable body 130 are the same, that is, the mechanical properties of all cable bodies 130 are substantially the same, so that the mechanical stability of the whole cable body 130 structure can be ensured, and the anchor cable structure 100 can have a good protection effect on the side slope.
In some embodiments, referring to fig. 4 or 5, the anchor cable structure 100 further includes a guide frame 110 and a grouting pipe 140, the guide frame 110 is connected to the base body of the cable structure, the guide frame 110 and the cover body are respectively located at two opposite sides of the base body, the guide frame 110 is hollow to form a grouting space, the grouting space is communicated with an external space of the guide frame 110, and the grouting pipe 140 is communicated with the grouting space.
With such an arrangement, after a certain amount of grouting is performed in the grouting space, cement slurry in the grouting space flows outwards, the anchor cable structure 100 and the side slope can be connected into a whole after the cement slurry is solidified, as a specific implementation mode of the guide frame 110, the guide frame 110 comprises a connecting rod and a guide disc, one end of the connecting rod is vertically and fixedly connected with the base body, the other end of the connecting rod is vertically and fixedly connected with the guide disc, the connecting rod and the base body jointly form the grouting space, the connecting rod is used as a connecting piece, a large gap is formed between adjacent connecting rods, the cement slurry in the grouting space can be ensured to rapidly flow out of the guide frame 110, and when the anchor cable structure 100 is installed, the guide frame 110 also plays a guiding role, the connecting rod and the guide disc are made of steel, so that the connecting rod and the guide disc can be unaffected under the conditions of hole resistance and other impurities, the guide disk is provided with a through hole 311 coaxially for passing the cement slurry in order to further improve the efficiency of the cement slurry flowing out without deformation.
In order to solve the above problem, in the process of burying the anchor cable structure 100, the guide frame 110 plays a role of guiding the anchor cable structure 100, and is always located at a side close to the bottom of the anchor hole, when grouting needs to be performed through the grouting pipe 140, the most direct way is to increase the caliber of the mounting hole of the anchor cable structure 100 to provide a passing space for the grouting pipe 140, but the too large caliber of the mounting hole easily reduces the connection strength between the anchor cable structure 100 and the side slope.
So set up, anchor hole's size sets up to the connection strength in order to guarantee anchor rope structure 100 and side slope with the big or small adaptation of cable structure, buries anchor rope structure 100 underground after, only needs to insert slip casting pipe 140 from first accepting hole 1201, second accepting hole 1202 and can realize the intercommunication in slip casting pipe 140 and slip casting space.
In the anchor cable support engineering, applying prestress to the anchor cable is an indispensable link, and at present, the prestressed anchor cable construction process generally includes: drilling an anchoring hole, installing a prestressed anchor cable in the anchoring hole, grouting into the anchoring hole, curing concrete, and stretching the prestressed anchor cable to obtain prestress. However, the condition for realizing the process requires that the concrete strength reaches more than 75% to be tensioned, and the waiting time for concrete curing is long, so that the acquisition time of the prestress of the whole support body is late, when the grouting pipe 140 is pulled out, a certain backward displacement may be caused to the internal guy cable structure, and the support effect of the whole anchor cable structure is further reduced.
To solve the above problems, in some embodiments, the anchor cable structure 100 further includes a pre-stressing element 300 for forming a pre-stress, referring to fig. 1 to 3 or fig. 8 to 9, the pre-stressing element 300 includes a positioning frame 310 and an elastic member 320, the positioning frame 310 is disposed in the grouting space, the positioning frame 310 includes a connecting rod and a supporting disc, one end of the connecting rod is vertically and fixedly connected to the base, the other end of the connecting rod is vertically and fixedly connected to the supporting disc, the supporting disc is formed with a through hole 311 for allowing cement slurry to pass through, the elastic member 320 is a spiral spring with a suitable stiffness coefficient according to actual requirements for the pre-stress, the elastic member 320 is coaxially connected to one end of the grouting pipe 140, when the grouting pipe 140 is inserted into the first receiving hole 1201 and the second receiving hole 1202 to move forward, the elastic member 320 can abut against the supporting disc of the positioning frame 310, the elastic member 320 is pressed and deformed to generate an elastic force, interaction between cable bolt structure 100 and grout tube 140 is established.
During grouting, the elastic piece 320 is in a stable deformation state by artificially fixing the relative position of the grouting pipe 140, and after the grouting amount reaches a set value, the grouting pipe 140 is drawn out while grouting, at the moment, due to the elastic action provided by the elastic piece 320, the anchor cable structure 100 cannot be drawn out due to the driving of the grouting pipe 140 by friction force or the tension of cement slurry, so that the supporting effect of the whole anchor cable structure 100 is ensured, and meanwhile, the anchor cable structure 100 can be applied with prestress for moving in an anchoring hole.
In order to avoid the manual fixing work of the grouting pipe 140, in some embodiments, as shown in fig. 7, a fixture block 330 is disposed on an outer wall of the grouting pipe 140, a sliding groove 127 adapted to the fixture block 330 is disposed at one end of a hole wall of the first receiving hole 1201, an annular groove is coaxially disposed on the hole wall to form a collar 126 communicated with the sliding groove 127, and the collar 126 is adapted to the fixture block 330.
In the inserting process of the grouting pipe 140, when the fixture block 330 contacts the cover body, the grouting pipe 140 is rotated to enable the fixture block 330 to correspond to the position of the sliding groove 127, at this time, the grouting pipe 140 can be continuously inserted, meanwhile, the fixture block 330 enters the clamping ring 126, then, the grouting pipe 140 is rotated to enable the fixture block 330 to slide in the clamping ring 126 so as to enable the relative positions of the fixture block 330 and the sliding groove 127 to be staggered, the groove wall of the clamping ring 126 forms a limit on the fixture block 330, and the grouting pipe 140 does not generate displacement in the axial direction, so that the relative position of the grouting pipe 140 is fixed; when the slip casting pipe 140 is pulled outwards, the slip casting pipe 140 is rotated through an external force, so that the fixture block 330 can correspond to the position of the chute 127, and under the action of the deformation elastic force of the elastic piece 320, the elastic piece 320 can apply opposite forces to the positioning frame 310 and the slip casting pipe 140 respectively, that is, an inward force can be applied to the cable structure of the fixed cable body 130, so that prestress can be applied to a plurality of cable bodies 130 inside, and then the cable body 130 can achieve the best tensioning effect.
It should be noted that the number of the collars 126 in the present embodiment may be provided in plural, and two collars 126 are arranged in parallel, and each collar 126 is communicated with the chute 127.
So set up, can make fixture block 330 by spacing in different rand 126 according to the prestressing force demand of difference to can be that same anchor rope structure 100 can be applicable to the environment of different prestressing force demands.
In an embodiment of the anchor cable construction method provided by the present invention, the anchor cable construction method is used for installing the anchor cable structure 100 on a slope, and includes the following steps:
step one, forming anchoring holes in the slope surface of the side slope.
Specifically, firstly, a scaffold capable of placing a drilling machine is built at a position to be constructed, a steel plate is arranged below the drilling machine in a cushioning mode, the drilling machine is stable in state in the drilling process, during drilling, the angle error of a drill rod is controlled within +/-2 degrees, then the drilling machine is used for drilling a soil layer, the drilling hole is in a rotary drilling mode, a mud circulation hole protection mode is adopted during drilling, and after drilling is finished, mud circulation hole cleaning is carried out repeatedly, so that residues such as mud residues in the hole are removed.
And step two, assembling the anchor cable structure 100 and installing the anchor cable structure in the anchor hole.
Wherein, select suitable cable structure for use according to the quantity of installation cable body 130 as required, insert the connecting hole 221 of location portion 220 with the location head 131 of cable body 130 to rotatory certain angle or the number of turns is in order to carry out preliminary location to cable body 130, prevents that cable body 130 from dropping automatically, and many cable bodies 130 are by preliminary location completion back, and rotation driving portion 210 makes a plurality of location portions 220 rotate simultaneously, thereby makes a plurality of cable bodies 130 pulled simultaneously.
In the process of assembling the anchor cable structure 100, the grouting pipes 140 are assembled with the cable structure, and then the cable body 130 is assembled with the cable structure, by adopting the assembling sequence, the grouting pipes 140 assembled first can improve the structural strength of the cable structure, improve the torsion resistance of the cable structure, and prevent the cable structure from being twisted and bent in the installation process of the cable body 130.
After the grouting pipe 140 is inserted into the cable structure, a fixing plate can be sleeved on the grouting pipe 140, a round hole is formed in the middle of the fixing plate to allow the grouting pipe 140 to pass through, cable holes are formed in the periphery of the round hole, and the positioning head 131 of the cable body 130 firstly penetrates through the cable holes and then is matched with the positioning portion 220. In the slope protection project, the cable body 130 generally adopts a steel strand, and when the steel strand is bent, the bending moment generated by the steel strand is generally large, so that the cable body 130 is not convenient to be matched with the positioning portion 220, and after the fixing disc is arranged, the bending moment generated by the cable body 130 can be offset by the grouting pipe 140, so that one end, close to the positioning head 131, of the cable body 130 can be kept in a straight state, and the cable body 130 can be conveniently installed.
And step three, cleaning the hole by adopting air pressure, and replacing slurry in the anchoring hole.
And after the anchoring is finished, cleaning the hole by adopting air pressure, and replacing slurry in the hole until clean water flows out of the orifice of the anchoring hole.
And step four, grouting into the anchoring hole through the grouting pipe 140, and pulling out the grouting pipe 140 while grouting until grout flows out of the anchoring hole.
After hole cleaning is finished, connecting a grouting pump and a pre-embedded grouting pipe 140, preparing cement slurry according to design requirements, and grouting;
during the whole grouting process, the grouting pipe 140 must be pulled out while grouting, when the grouting pipe 140 needs to be pulled out, the grouting pipe 140 is rotated to enable the fixture block 330 to correspond to the position of the sliding groove 127, the fixture block 330 can slide out of the sliding groove 127, due to the deformation elastic action of the elastic piece 320, the elastic piece 320 applies opposite forces to the positioning frame 310 and the grouting pipe 140 respectively, so that an inward force can be applied to the cable structure for fixing the cable body 130, and then prestress can be applied to the cable body 130, and further the best tensioning effect can be achieved, when cement slurry flows out of the orifice of the anchoring hole, grouting is stopped;
and tensioning and locking after the grouting completion strength reaches 15MPa and the anchoring grouting volume crown beam reaches 80% of the design strength.
It should be noted that, the grouting material in this embodiment is cement with a strength grade of over PO32.5, and the water cement ratio is 0.4-0.5; if cement mortar is adopted, the mixing ratio is set to be 1: 1, the grain diameter of the sand is not more than 2mm, and the mortar is only used for one-time grouting.
After the anchor hole is cleaned and accepted, the assembled anchor cable structure 100 is put into the anchor hole, and the assembled anchor cable structure 100 is slowly fed into the anchor hole when the assembled anchor cable structure 100 is put into the anchor hole, so that the anchor cable structure 100 is prevented from being distorted.
Grouting is carried out by adopting a mode of primary normal pressure grouting and hole bottom slurry return of a grouting machine until slurry overflows from an orifice of the anchoring hole or the exhaust pipe stops exhausting and dilute cement slurry is extruded, and grouting can be stopped. In addition, in the grouting process, in order to avoid the cable body 130 from being bent downwards due to the collapse of the anchoring hole and the sinking of the cable body 130, the cable body 130 is temporarily fixed so as to reduce the deformation of the cable body 130 and the deformation of the side slope of the foundation pit and ensure the construction safety; and pre-tensioning the cable body 130 after the cement paste reaches the preset age so as to reduce the prestress relaxation of the cable body 130. Especially, when the prestress is applied in the later period, the interval jump lock is adopted during the prestress tension lock, so as to ensure that the stress of each cable body 130 is uniform, and the locking load value is balanced, so as to ensure that the locking load of the cable body 130 reaches 1.2-1.3 times of the designed locking load value, namely the locking of the over-force value.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (15)
1. A cable structure, comprising:
a base;
the positioning parts (220) are rotatably connected with the base body, connecting holes (221) used for being connected with positioning heads (131) of the cable body (130) in a threaded mode are formed in the positioning parts (220), the positioning parts (220) rotate around the axis of the connecting holes (221) relative to the base body, and first meshing teeth (222) are arranged on the positioning parts (220);
the positioning parts (220) are in transmission connection with the driving part (210) respectively, the driving part (210) is in rotatable connection with the base body, the driving part (210) is provided with second meshing teeth (211), and the first meshing teeth (222) are meshed with the second meshing teeth (211) to form transmission connection;
the cover body is fixedly arranged on the base body, the driving part (210) is rotatably connected with the cover body, and a plurality of guide holes (123) corresponding to the connecting holes (221) are formed in the cover body;
a mounting seat for rotatably connecting the positioning portion (220); the mounting seat is connected with the base body, or the mounting seat is respectively connected with the base body and the cover body.
2. The cable structure according to claim 1, wherein the positioning portion (220) is provided in the driving portion (210), and the first engagement tooth (222) engages with the second engagement tooth (211).
3. Cable structure according to claim 1, characterized in that said base body is provided with a first annular runner (1251), said driving portion (210) being provided with a first sliding block (2121) located inside said first annular runner (1251).
4. Cable structure according to claim 3, characterized in that said cover is provided with a second annular runner (1252), said driving portion (210) being provided with a second sliding block (2122) located inside said first annular runner (1251).
5. The cable structure according to claim 1, wherein the mount includes a first base (1221) and a second base (1222) that are provided on both sides of the positioning portion (220);
the first base (1221) is connected with the base body, the positioning part (220) is rotatably connected with the first base (1221), and the first base (1221) is provided with a first avoidance hole corresponding to the connecting hole (221);
the second base (1222) is connected to the cover, the positioning portion (220) is rotatably connected to the second base (1222), and the second base (1222) is provided with a second avoiding hole corresponding to the connecting hole (221).
6. Inhaul cable structure according to claim 5, characterized in that the positioning portion (220) is provided with a third annular chute (2201), the first base (1221) being provided with a third sliding block located in the third annular chute (2201);
the locating portion (220) is further provided with a fourth annular sliding groove (2203), and the second base (1222) is provided with a fourth sliding block body located on the fourth annular sliding groove (2203).
7. A cable structure according to any one of claims 1 to 6, wherein the driving portion (210) is provided with a plurality of anti-slip stripes (213) for contact with a hand.
8. Cable body, characterized in that the end of the cable body (130) is provided with a positioning head (131), the positioning head (131) being intended to be screwed with a connection hole (221) of a cable structure according to claim 1.
9. A cable bolt structure, comprising:
a guy cable structure according to any one of claims 1 to 7; and
the cable body (130) of claim 8.
10. The cable bolt structure of claim 9, comprising:
the guide frame (110) is arranged on the base body, the guide frame (110) is provided with a grouting space communicated with the outside of the guide frame (110), and the guide frame (110) is used for guiding the anchor cable structure (100) when the anchor cable structure (100) penetrates through a drill hole;
a grouting pipe (140) in communication with the grouting space.
11. Cable bolt structure according to claim 10, wherein the cable bolt structure (100) is provided coaxially with a first receiving hole (1201) through the cover body and a second receiving hole (1202) through the base body, the first receiving hole (1201) and the second receiving hole (1202) being adapted to pass through the grouting pipe (140), respectively.
12. The cable bolt structure of claim 11, including a spacer (310) provided to said base, said spacer (310) being located in said grouting space;
one end of the grouting pipe (140) is provided with an elastic part (320), and when the grouting pipe (140) generates axial displacement, the elastic part (320) can abut against the positioning frame (310).
13. The cable bolt structure according to claim 11 or claim 12, wherein the outer wall of the grout tube (140) is provided with dogs (330);
one end of the hole wall of the first bearing hole (1201) is provided with a sliding groove (127) matched with the clamping block (330), an annular groove is coaxially formed in the hole wall to form a clamping ring (126) communicated with the sliding groove (127), and the clamping ring (126) is matched with the clamping block (330).
14. A cable bolt construction method for installing a cable bolt structure (100) according to claim 11 in a slope, comprising the steps of:
arranging anchoring holes on the slope surface of the side slope;
assembling an anchor cable structure (100) and installing the anchor cable structure in the anchor hole;
cleaning holes by adopting air pressure, and replacing slurry in the anchoring holes;
grouting into the anchoring hole through the grouting hole, and pulling out the grouting pipe (140) while grouting until grout flows out of the anchoring hole.
15. A method of constructing a cable bolt according to claim 14, wherein the cable bolt construction (100) is assembled by:
mounting a grouting pipe (140) on the first bearing hole (1201) and the second bearing hole (1202) until the elastic piece (320) is abutted against the positioning frame (310);
the fixed disc is sleeved on the grouting pipe (140);
the positioning head (131) of the cable body (130) penetrates through the fixed disc and is connected with the positioning part (220).
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| CN202111363498.4A CN113863299B (en) | 2021-11-17 | 2021-11-17 | Inhaul cable structure, cable body, anchor cable structure and anchor cable construction method |
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| CN202111363498.4A CN113863299B (en) | 2021-11-17 | 2021-11-17 | Inhaul cable structure, cable body, anchor cable structure and anchor cable construction method |
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| CN111827308A (en) * | 2020-06-27 | 2020-10-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Recoverable anchor cable structure and use method thereof |
| CN211947994U (en) * | 2020-03-25 | 2020-11-17 | 淮南东华欧科矿山支护设备有限责任公司 | Anchor rope secondary tensioning mechanism |
| CN212479292U (en) * | 2020-01-14 | 2021-02-05 | 山东嘉浩矿山机械有限公司 | Slip casting anchor rope with plum blossom shape fastening head |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8926230B2 (en) * | 2012-10-11 | 2015-01-06 | Minova Usa, Inc. | Tension cable bolt |
| WO2016134386A1 (en) * | 2015-02-18 | 2016-08-25 | Ncm Innovations (Pty) Ltd | Tensionable cable anchor assembly and a tensioning device for tensioning same |
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- 2021-11-17 CN CN202111363498.4A patent/CN113863299B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2863896Y (en) * | 2006-08-01 | 2007-01-31 | 范晶彦 | Anchor cable body and apparatus for twisting the same |
| WO2013104021A1 (en) * | 2012-01-10 | 2013-07-18 | Quantax Pty Ltd | Improved torque tensioning system for cable bolts |
| CN212479292U (en) * | 2020-01-14 | 2021-02-05 | 山东嘉浩矿山机械有限公司 | Slip casting anchor rope with plum blossom shape fastening head |
| CN211947994U (en) * | 2020-03-25 | 2020-11-17 | 淮南东华欧科矿山支护设备有限责任公司 | Anchor rope secondary tensioning mechanism |
| CN111827308A (en) * | 2020-06-27 | 2020-10-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Recoverable anchor cable structure and use method thereof |
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