CN210315592U - Supporting system for supporting high and steep slope - Google Patents

Abstract

The utility model relates to a building engineering technical field, concretely relates to a support system for steep slope support, include along the domatic prestressed anchorage cable support system and the stock support system that sets up of side slope, prestressed anchorage cable support system upwards sets up from domatic bottom to separate with the lateral part and the top of side slope, the stock support system sets up prestressed anchorage cable support system periphery, the stock support system meets with prestressed anchorage cable support system, and including the top and the lateral part cladding of side slope, a first net muscle that the support system for steep slope support still weaves the first net muscle that forms including spraying concrete layer and adopting the reinforcing bar, first net muscle is laid the stock support system corresponds domaticly, sprays concrete layer and is in the corresponding domatic of stock support system is gone up, and will including the cladding of first net muscle. The supporting system greatly improves the stability and reliability of slope supporting through the synergistic effect of the anchor rod supporting system and the prestressed anchor cable supporting system.

Description

Supporting system for supporting high and steep slope

Technical Field

The utility model relates to a building engineering technical field, concretely relates to a strut system for steep slope support.

Background

In the field of building engineering technology, when a building or a construction site relates to a high and steep slope, for example, when a highway and a railway are designed along the high and steep slope, in order to ensure the safety of a construction process and a building structure, the slope generally needs to be reinforced, so that a rock body and a soil body of the slope are stabilized, and disasters such as collapse are avoided.

At present, in a slope reinforcement mode, support systems such as anchor bolt support, anchor cable support and retaining wall support are common, and although these support means can have good effects on landslide treatment and slope reinforcement of a steep slope to a certain extent, the support means still have disadvantages, specifically as follows:

the support system is used for supporting a slope on a slope surface, when the height of the slope body is lower, a retaining wall is usually adopted for supporting, when the height of the slope body is higher, a support form of anchor rod support or anchor cable support needs to be adopted, both the anchor rod support and the anchor cable support need to be drilled on the slope body, an anchor rod or an anchor cable is arranged in the drilled hole and then anchored outside the slope body, and further an outer soil body of the slope body and a rock body in the slope body are connected into a whole to form a reinforcement system from outside to inside, so that the anti-sliding capability of each layer of the rock-soil body is increased, the support of the slope body is realized, and disasters such as instability and collapse of the slope are prevented.

As described above, after the anchoring construction of the slope body, whether the slope is stably and reliably anchored depends on the quality of the anchoring construction and also depends on whether the rock mass inside the slope body can reliably fix the anchor rod or the anchor cable, in the actual engineering construction, the inventor finds that the edge positions of the slope, especially the top positions, can also realize the fixation of the anchor cable or the anchor rod due to the shallow covering layer, and form a stable supporting system after the anchoring construction, but as time increases, the internal structures of the slope bodies at the positions are loosened due to the erosion and penetration of rainwater, and further the anchor cable or the anchor rod is loosened, so that the supporting of the slope bodies at the positions is disabled, the slope is easy to collapse in rainy seasons, and serious safety accidents are caused.

Therefore, a slope support system capable of reliably supporting a high and steep slope and reducing the risk of support failure caused by rainwater erosion and penetration is needed at present.

Disclosure of Invention

The utility model aims to provide a: aiming at the defect that the support is invalid due to rainwater washing and permeating in the conventional high and steep slope support system, the slope support system can reliably support the high and steep slope and reduce the risk of support invalidation due to rainwater washing and permeating.

In order to achieve the purpose of the invention, the utility model provides the following technical scheme:

the utility model provides a support system for steep slope support, includes along the domatic prestressed anchorage cable support system and the anchor bolt support system that sets up of side slope, prestressed anchorage cable support system upwards sets up from domatic bottom, and with the lateral part and the top of side slope separate, anchor bolt support system sets up prestressed anchorage cable support system is peripheral, anchor bolt support system with prestressed anchorage cable support system meets to including the top and the lateral part cladding of side slope, a support system for steep slope support still includes spray concrete layer and adopts the first guid that the reinforcing bar was woven and is formed, first guid is laid on the domatic that anchor bolt support system corresponds, spray concrete layer sprays on the corresponding domatic of anchor bolt support system, and will including first guid cladding.

In the traditional anchor rod supporting system and the prestressed anchor cable supporting system, whether the side slope is supported stably depends on whether the anchor rod or the anchor cable is fixed stably by the slope body, and in rainy seasons, due to the fact that rainwater is washed and soaked for a long time, particularly the top part and the side part of the slope, when the interior of the slope body at the positions is dispersed due to rainwater infiltration, the anchor rod and the anchor cable are fixed to be invalid, and then the slope body collapses and other problems occur, therefore, in the supporting system, through the arrangement of the anchor rod supporting system, a reliable releasing and flushing brush layer is formed in the anchor rod supporting system through a first net rib and a sprayed concrete layer while a good supporting system is formed, on one hand, the washing of rainwater to the upper part of the slope is blocked, the rainwater is prevented from permeating into the slope body, the reliable fixing of the anchor rod by the slope body is ensured, and the supporting reliability of the anchor rod supporting system to the slope body is further ensured, on the other hand, the anchor rod supporting system adopts a rigid structural rod piece as an anchoring piece connected with the interior of the slope body, and usually penetrates through a plurality of rock layers while supporting the slope body, so that a reinforcing structure is further formed inside the slope body, the stability of the slope body is further improved, and the supporting stability of the surface layer of the slope body is further increased, further, in the scheme of the application, the anchor rod supporting system and the prestressed anchor cable supporting system are simultaneously included, the anchor rod supporting system is positioned at the top and the side of the slope, the prestressed anchor cable supporting system is positioned below the anchor rod supporting system, the reliability of the slope body for fixing the anchor cable is ensured while the anchor rod supporting system well supports the top and the side of the slope, the prestressed anchor cable supporting system adopts a flexible anchor cable, for example, a steel strand is adopted as the anchor cable to form the anchoring piece connected with the interior of the slope body, on one hand, a relatively flexible reinforcing system is formed, and when large-scale geological strata such as earthquakes and the like deform, a good supporting effect can still be achieved, so that in the scheme of the application, the stability and the reliability of slope support are greatly improved through the synergistic effect of the anchor rod supporting system and the prestressed anchor cable supporting system.

Preferably, the first mesh reinforcement is bent towards the top surface of the slope at the top of the slope and covers the top surface of the slope.

As a preferable technical scheme, the first net rib positioned on the top of the slope is of a double-layer first net rib structure.

As a preferable technical scheme, a plurality of steel bar sections are further arranged on the slope top, and the steel bar sections are vertically inserted into the slope body and welded with the first mesh bars on the slope top.

Preferably, the length of the steel bar section inserted into the slope body is greater than or equal to 1 meter, and the diameter of the steel bar section is greater than or equal to 20 millimeters.

According to the preferable technical scheme, the anchor bolt supporting system further comprises a plurality of anchor bolts, first anchor holes are drilled in the slope body corresponding to the anchor bolts, one ends of the anchor bolts are inserted into the corresponding first anchor holes, the other ends of the anchor bolts are connected with the first net bars, concrete is poured into the first anchor holes, supports are arranged on the anchor bolts and matched with the side walls of the first anchor holes, and the anchor bolts are located on the central axis of the first anchor holes.

As the preferred technical scheme, the support includes a plurality of supporting parts around the supporting part of stock circumference equipartition, separates mutually between the adjacent supporting part, the both ends of supporting part with the stock is connected, the middle part orientation of supporting part first anchor eye lateral wall is protruding, form with first anchor eye lateral wall matched with cooperation portion.

Preferably, the engaging portion of the support portion is parallel to the anchor rod.

In a preferred embodiment, the supports of the adjacent supports are staggered in the axial direction of the anchor.

As a preferable technical scheme, the end part of the anchor rod outside the first anchor hole exceeds the first net rib, is bent towards the first net rib, covers the first net rib, and is welded with the first net rib.

As a preferred technical scheme, the anchor rods are arranged in a layered mode in the vertical direction, adjacent anchor rods on the same layer are spaced, the anchor rods comprise long anchor rods with long lengths and short anchor rods with short lengths, the anchor rods on the same layer are the same in length, and the anchor rods on adjacent layers are different in length.

As a preferable technical scheme, the support system further comprises a water intercepting ditch, the water intercepting ditch is arranged on a slope above the anchor bolt support system, and the sprayed concrete layer extends towards the water intercepting ditch and forms an integral concrete structure with the concrete layer of the water intercepting ditch.

As a preferable technical scheme, the length of the intercepting drain is greater than or equal to that of the anchor bolt supporting system, and the sprayed concrete layer covers the slope surface between the intercepting drain and the anchor bolt supporting system.

As a preferred technical scheme, the intercepting drain is arranged at the top of the slope of the side slope and is separated from the edge of the top of the slope of the side slope by a distance of at least 1 meter.

As a preferable technical scheme, the prestressed anchor cable supporting system comprises a lattice frame body and a plurality of prestressed anchor cable assemblies connected with the lattice frame body, a second anchor hole is arranged on the slope body corresponding to the prestressed anchor cable assembly, concrete is poured into the second anchor hole, the prestressed anchor cable assembly comprises an extending section positioned in the second anchor hole and a fixing section positioned outside the second anchor hole, an anchorage device for anchoring the fixing section is arranged on the end part of the fixing section extending out of the lattice frame body, a first pad body is arranged between the anchorage device and the lattice frame body, one side of the first pad body facing the lattice frame body is fixedly connected with the lattice frame body, one side of the first pad body, which is far away from the lattice frame body, is a matching surface used for matching with the anchorage device, and the matching surface is vertical to the axial direction of the second anchor hole.

As a preferable technical scheme, a second cushion body is further arranged between the matching surface and the anchorage device, the edge of the second cushion body exceeds the edge of the anchorage device, and the edge of the first cushion body exceeds the edge of the second cushion body.

According to a preferable technical scheme, the first cushion body is of a concrete pouring structure, the first cushion body and the lattice frame body are integrally poured and formed, and the second cushion body is a steel plate.

As a preferable technical scheme, concrete is further poured on the first cushion body to form an anchor cable end socket, and the anchor cable end socket wraps the fixing section and the anchorage of the prestressed anchor cable assembly.

And as a preferable technical scheme, a second net rib is further arranged in the anchor cable end socket and is welded with the fixed section of the prestressed anchor cable assembly.

As a preferable technical scheme, one side of the lattice framework facing the slope body is embedded into the slope body, the lattice framework comprises a plurality of vertical rib columns and a plurality of transverse rib columns, the vertical rib columns and the transverse rib columns are crossed to form a plurality of framework units, and the prestressed anchor cable assembly is arranged at the crossed position of the transverse rib columns and the vertical rib columns.

According to the preferable technical scheme, the vertical rib columns on the same vertical direction are integrally cast, the transverse rib columns on the same transverse direction are a plurality of transverse rib column sections, and the transverse rib column sections are connected between the adjacent vertical rib columns.

As a preferable technical scheme, a retaining wall is further arranged on the ground corresponding to the bottom of the lattice frame body, and a plurality of drainage holes are further formed in the retaining wall.

Preferably, the end of the extension section of the prestressed anchor cable assembly is spaced from the bottom of the second anchor hole to form a sand setting section.

According to the preferable technical scheme, the length of the sand setting section is 1/10-1/15 of the length of the second anchor hole.

As a preferable technical scheme, an extending section of the prestressed anchor cable assembly is divided into a free section and an anchoring section along a direction from the orifice of the second anchor hole to the bottom of the hole, the free section is a straight line parallel to the central axis of the second anchor hole, and the anchoring section is used for being fixedly connected with concrete in the second anchor hole.

As a preferable technical scheme, a sleeve is further sleeved outside the free section, sealing elements are arranged at two ends of the sleeve, the free section is sealed in the sleeve, and the sealing elements are flexible sealing elements.

As a preferable technical scheme, the sealing element is filled between the free section and the sleeve, and the length of the sealing element is 100-200 mm.

Preferably, the sealing element is butter.

As a preferable technical scheme, an anti-corrosion coating is coated outside the free section.

As a preferred technical scheme, the prestressed anchor cable assembly comprises a grouting pipe and a plurality of steel strands, the steel strands are arrayed outside the grouting pipe along the circumference of the grouting pipe, a first expansion ring is further arranged at the end part of the anchoring section facing the free section, a second expansion ring is further arranged in the middle of the anchoring section, the first expansion ring and the second expansion ring are used for supporting the steel strands, through holes for the steel strands to pass through are formed in the first expansion ring and the second expansion ring, the through holes correspond to the steel strand through holes in the anchorage device, the radial heights of the steel strands at the anchorage device and the positions of the first expansion ring and the second expansion ring from the grouting pipe are equal, a first restraint ring is further arranged between the first expansion ring and the second expansion ring, the first restraint ring is used for restraining the steel strands in the radial direction of the grouting pipe, and attaching the steel strand at the first restraint ring to the outer part of the grouting pipe.

As a preferable technical scheme, a second restraining ring is further arranged on the anchoring section, the second restraining ring is located between the outlet of the grouting pipe and the second expansion ring, and the second restraining ring is used for restraining the steel strands in the radial direction of the grouting pipe so that the steel strands at the second restraining ring are attached to the outer part of the grouting pipe.

As a preferred technical solution, the first confinement ring and the second confinement ring are symmetrically arranged along the second expansion ring.

As a preferable technical scheme, a corrugated pipe is further sleeved outside the prestressed anchor cable assembly, one end of the corrugated pipe is located at the opening of the second anchor hole, the other end of the corrugated pipe exceeds the end of the prestressed anchor cable assembly and is located in the anchoring section, and a guide cap is arranged at the end of the corrugated pipe at the anchoring section.

Preferably, the guide cap is a shell structure protruding away from the prestressed anchor cable assembly.

As a preferable technical scheme, a notch for the concrete to penetrate out is arranged on the guide cap.

Preferably, the notch is long and is formed by the top of the protrusion of the guide cap.

As a preferred technical scheme, the gaps are a plurality of gaps which are separated from each other and are uniformly distributed along the circumferential direction.

Preferably, the notch is spirally bent around the guide cap.

Compared with the prior art, the beneficial effects of the utility model are that:

in the supporting system of the application, through setting up the anchor bolt supporting system, while forming good supporting system through the first net muscle and sprayed concrete layer in the anchor bolt supporting system, still form the reliable scour layer of putting, on one hand, block the washing of rainwater to the upper portion of the side slope, and avoid rainwater to permeate into the slope, have guaranteed the slope to the reliable fixation of anchor rod, and then has guaranteed the reliability that the anchor bolt supporting system supports the slope, on the other hand, the anchor bolt supporting system adopts the rigid structure member as and connects a anchor assembly with the slope inside, it is while playing a supporting role to the side slope, still usually can pass a plurality of rock layers, so still further form the reinforced structure to the slope inside, further improve the stability of the slope, also further increased the supporting stability to the side slope top layer, further, in the scheme of the application, the anchor rod support system is positioned on the top of a slope and the side of the slope, the pre-stressed anchor cable support system is positioned below the anchor rod support system, the anchor rod support system can well support the top of the slope and the side of the slope and simultaneously ensure the fixing reliability of the slope to the anchor cable, the pre-stressed anchor cable support system adopts a flexible anchor cable, for example, a steel strand is used as the anchor cable to form an anchoring part connected with the inside of the slope, on one hand, a relatively flexible reinforcing system is formed, and when large-scale geological strata such as earthquakes and the like deform, the good support effect can still be achieved.

Description of the drawings:

FIG. 1 is a schematic diagram of the relative positions of a pre-stressed anchor cable support system and a bolting system in an embodiment;

FIG. 2 is a schematic cross-sectional view of the relative positions of the pre-stressed anchor cable support system and the anchor bolt support system in the specific embodiment;

FIG. 3 is a schematic view of a partial position of a catch basin according to an embodiment;

FIG. 4 is a schematic view of an installation structure of a bolt support in an embodiment;

FIG. 5 is a schematic view of the engagement of the anchor with the bracket in accordance with an embodiment;

FIG. 6 is a schematic view of the structure of the stent when the connecting portion is corrugated;

FIG. 7 is a schematic view illustrating an installation structure of a prestressed anchorage cable according to an embodiment;

fig. 8 is a schematic structural view of an anchor cable head in the embodiment;

figure 9 is an enlarged view of a portion of figure 7 at a,

the following are marked in the figure: 1-side slope, 2-prestressed anchor cable supporting system, 3-anchor rod supporting system, 4-sprayed concrete layer, 5-first net rib, 6-steel bar segment, 7-anchor rod, 8-first anchor hole, 9-bracket, 10-matching portion, 11-long anchor rod, 12-short anchor rod, 13-intercepting ditch, 14-connecting portion, 15-second anchor hole, 16-fixing segment, 17-free segment, 18-anchoring segment, 19-lattice frame body, 20-anchor, 21-first cushion body, 22-sleeve, 23-sealing member, 24-second cushion body, 25-anchor cable end socket, 26-first expansion ring, 27-second expansion ring, 28-first restraint ring, 29-second restraint ring and 30-grouting pipe, 31-steel strand, 32-corrugated pipe, 33-guide cap, 34-gap, 35-retaining wall, 36-drainage ladder, 37-second net rib and 38-sand setting section.

Detailed Description

The present invention will be described in further detail with reference to the following test examples and specific embodiments, but it should not be understood that the scope of the above subject matter of the present invention is limited to the following examples, and all the technologies realized based on the present invention are within the scope of the present invention.

Example 1, as shown in figures 1-4:

a supporting system for supporting a high and steep slope comprises a prestressed anchor cable supporting system 2 and an anchor rod supporting system 3 which are arranged along the slope surface of a slope 1, wherein the prestressed anchor cable supporting system 2 is arranged upwards from the bottom of the slope surface, and is separated from the side part and the top part of the side slope 1, the anchor bolt supporting system 3 is arranged at the periphery of the prestressed anchor cable supporting system 2, the anchor bolt supporting system 3 is connected with the prestressed anchor cable supporting system 2, the top and the side of the side slope 1 are covered, the support system for supporting the high and steep side slope 1 further comprises a sprayed concrete layer 4 and a first net rib 5 woven by steel bars, the first net rib 5 is laid on the slope surface corresponding to the anchor rod supporting system 3, and the sprayed concrete layer 4 is sprayed on the slope surface corresponding to the anchor rod supporting system 3 and covers the first net rib 5.

In the traditional anchor rod supporting system 3 and the prestressed anchor cable supporting system 2, whether the side slope 1 is supported stably depends on whether the anchor rod or the anchor cable is fixed stably by the slope body, and in rainy season, because the rainwater is washed and soaked for a long time, particularly the top part and the side part of the slope, when the interior of the slope body at the positions is dispersed due to rainwater infiltration, the fixation of the anchor rod and the anchor cable at the positions is invalid, and further the slope body collapses and other problems occur, therefore, in the supporting system of the application, by arranging the anchor rod supporting system 3, the first net rib 5 and the sprayed concrete layer 4 in the anchor rod supporting system 3 form a good supporting system and simultaneously form a reliable flushing layer, on one hand, the washing of the upper part of the side slope 1 by the rainwater is blocked, and the rainwater is prevented from permeating into the slope body, so that the anchor rod is fixed reliably by the slope body, further ensuring the reliability of the anchor bolt supporting system 3 for supporting the slope, on the other hand, the anchor bolt supporting system 3 adopts a rigid structural rod piece as an anchoring piece connected with the interior of the slope, and usually passes through a plurality of rock layers while supporting the side slope 1, so that a reinforcing structure is further formed in the interior of the slope, the stability of the slope is further improved, and the supporting stability of the surface layer of the side slope 1 is further increased, further, in the scheme of the application, the anchor bolt supporting system 3 and the prestressed anchor cable supporting system 2 are simultaneously included, the anchor bolt supporting system 3 is positioned at the top of the slope and at the side of the slope, the prestressed anchor cable supporting system 2 is positioned below the anchor bolt supporting system 3, the reliability of the slope for fixing the anchor cable is also ensured while the anchor cable is well supported at the top of the slope and at the side of the anchor bolt supporting system 3, and the prestressed anchor cable system 2 adopts a flexible supporting, for example, the steel strand is used as an anchor cable to form an anchoring part connected with the interior of the slope body, on one hand, a relatively flexible reinforcing system is formed, and when large-scale geological strata such as earthquakes and the like deform, a good supporting effect can still be achieved, so that in the scheme of the application, the stability and the reliability of slope body supporting are greatly improved through the synergistic effect of the anchor rod supporting system 3 and the prestressed anchor cable supporting system 2.

In a preferred embodiment, the first mesh wire 5 is bent at the top of the slope toward the top of the slope and covers the top of the slope. The top of the first net rib 5 is bent to cover the top of the slope, and the sprayed concrete layer 4 covers the first net rib 5 to form an integral hanging structure, so that the connection reliability between the anchor rod supporting system 3 and the slope body is further improved, and the first net rib 5 is convenient to stabilize in the construction process due to the support of the slope body, and the risk of displacement of the first net rib 5 is reduced in the construction process.

In a preferred embodiment, the first mesh reinforcement 5 positioned on the top of the slope adopts a double-layer first mesh reinforcement 5 structure. Adopt the double-deck first net muscle 5 structure at the top of a slope, adopt the steel wire to ligature between the two-layer first net muscle 5, so, further improve the structural strength of the partial supporting system in top of a slope, when improving the rainwater scouring resistance ability, also further improved the structural strength and the structural stability of anchor bolt supporting system 3.

In a preferred embodiment, a plurality of steel bar sections 6 are further arranged on the slope top, and the steel bar sections 6 are vertically inserted into the slope body and welded with the first mesh bars 5 on the slope top. Through setting up steel bar segment 6, the stability is connected with the slope body to the first net muscle 5 of further improvement, and on the other hand, steel bar segment 6 can also be regarded as the reinforcing frame and consolidate the top of slope, so, also further improvement the stability of top of slope part.

In a preferred embodiment, the length of the steel bar section 6 inserted into the slope body is greater than or equal to 1 meter, and the diameter of the steel bar section 6 is greater than or equal to 20 millimeters.

Example 2, as shown in figures 1-6:

on the basis of embodiment 1, it is further that anchor bolt supporting system 3 still includes a plurality of stock 7, stock 7 corresponds it is equipped with first anchor eye 8 to bore on the slope body, stock 7 one end is inserted and is corresponded separately in the first anchor eye 8, the other end with first net muscle 5 links to each other the concrete has been poured into in the first anchor eye 8 be provided with support 9 on the stock 7, support 9 cooperatees with first anchor eye 8 lateral wall, makes stock 7 is located the center axis position of first anchor eye 8. Through setting up support 9, avoid stock 7 in first anchor eye 8 with the contact of anchor eye lateral wall, after the concreting, make stock 7 be located concrete structure's middle part position, so, improve stock 7 by fixed reliability, on the other hand, because support 9 is also by the cladding in the concreting, form the tensile stop block, so, also further improvement stock 7 and concrete support 9's joint strength and connection reliability.

As a preferred embodiment, the support 9 includes a plurality of support portions evenly distributed around the circumference of the anchor rod 7, adjacent support portions are spaced apart from each other, two ends of each support portion are connected to the anchor rod 7, and the middle of each support portion protrudes toward the side wall of the first anchor hole 8 to form a matching portion 10 matched with the side wall of the first anchor hole 8. The supporting parts are separated from each other, so that the concrete can smoothly penetrate through the bracket 9 to fill the whole first anchor hole 8 in the concrete pouring process; and the supporting part adopts middle arch, and the mode that both ends and stock 7 link to each other has not only improved the joint strength of supporting part and stock 7, still forms the space at supporting part and 7 supports 9 of stock moreover, behind the poured concrete, the concrete is filled in these spaces, further improvement the joint strength between stock 7 and the concrete structure, improve the fixed reliability of stock 7.

In a preferred embodiment, the engagement portion 10 of the support portion is parallel to the anchor bar 7. The supporting part is set to be a straight line section which is parallel to the anchor rod 7, the resistance of the anchor rod 7 in the placing process is reduced, the support 9 also plays a role in guiding, and the anchor rod 7 is further convenient to place into the construction.

In a preferred embodiment, the brackets 9 provided on the same anchor 7 are offset from each other in the axial direction of the anchor 7 in the supporting portions of the adjacent brackets 9. So set up for, on the cross-section of perpendicular to stock 7 axial, the projection of each support 9 on same stock 7 does not coincide mutually, and mode like this is the reliability that further improvement combines between support 9 and the concrete on the one hand, and on the other hand, when having avoided when support 9 projection coincidence, on the supporting part direction, the concrete volume is less and causes the problem of fixing unstably.

As another preferable mode, the support portion is provided with connecting portions 14 at two sides of the fitting portion 10, one end of each connecting portion 14 is connected to the fitting portion 10, the other end of each connecting portion 14 is connected to the anchor rod 7, and all or part of the connecting portions 14 are bent in a corrugated shape.

In this scheme, all or part with connecting portion 14 are corrugated bending, make connecting portion 14 have certain elasticity, put into first anchor eye 8 in-process at stock 7, when there is the arch or other to block in first anchor eye 8 lateral wall, connecting portion 14 can provide certain deformation allowance, reduce stock 7 and put into the resistance, so reduce stock 7 and lead to the risk of deformation because of the resistance is too big, ensure stock 7 anchor quality, on the other hand, because connecting portion 14 is all or part is corrugated bending, the cooperation area of connecting portion 14 with the concrete has still been increased, further improvement anchor intensity.

In a preferred embodiment, the end of the anchor rod 7 located outside the first anchor hole 8 exceeds the first mesh bar 5, is bent toward the first mesh bar 5, covers the first mesh bar 5, and is welded to the first mesh bar 5. The stock 7 outer end is the form of buckling, has increased the welding area and the welding position of stock 7 with first net muscle 5 on the one hand, improves welding strength, and on the other hand has also improved the joint strength between stock 7 and the first net muscle 5 by a wide margin, and then further improvement the stability of strutting to side slope 1.

In a preferred embodiment, the anchor rods 7 are arranged in layers in the vertical direction, adjacent anchor rods 7 in the same layer are spaced, the anchor rods 7 comprise long anchor rods 11 with longer lengths and short anchor rods 12 with shorter lengths, the anchor rods 7 in the same layer are the same in length, and the anchor rods 7 in adjacent layers are different in length. In the scheme of this application, set up the stock 7 of different layers into length difference, make the stock 7 tip of putting into the slope body not be in coplanar or the rock stratum of same thickness, so, avoid the slope body coplanar or rock stratum atress concentrate and reduce the anchor stability.

In a preferred embodiment, the support system for high and steep slope support further comprises a catch basin 13, the catch basin 13 is arranged on the slope 1 above the anchor support system 3, and the shotcrete layer 4 extends towards the catch basin 13 and forms an integral concrete structure with the concrete layer of the catch basin 13. Through setting up catch basin 13, realize the drainage of slope top, on the one hand is the further rainwater of avoiding infiltration slope body, and on the other hand also can reduce along domatic trickle discharge, when further reducing rivers infiltration slope body, also avoid bringing the trouble for the construction in the domatic work progress.

In a preferred embodiment, the support system for supporting the high and steep slope further comprises at least one drainage step 36 for draining water, the adjacent drainage steps are spaced apart, and the drainage steps 36 are vertically arranged along the slope. In this scheme, drainage step 36 is the step that concrete placement formed, and constructor can scramble through drainage step 36 and strut the system, and the later stage maintenance of being convenient for is under construction such as maintenance, and it collects down along the vertical setting of slope in addition, the rainwater of being convenient for when rainy season.

In a preferred embodiment, the length of the intercepting drain 13 is greater than or equal to the length of the bolting system 3, and the shotcrete layer 4 covers the slope between the intercepting drain 13 and the bolting system 3. Therefore, the water flow is further prevented from permeating into the slope body and the scouring of rainwater on the slope body is reduced.

In a preferred embodiment, the catch basin 13 is disposed at the top of the slope 1 and is spaced apart from the top edge of the slope 1 by a distance of at least 1 m. So set up, ensure that catch water ditch 13 has enough space and excavate, avoid catch water ditch 13 excessively to be close to the top of a slope edge and lead to the problem that structural strength is not enough.

Example 3, as shown in figures 1-9:

on the basis of embodiment 1 or 2, further, the prestressed anchor cable supporting system 2 includes a lattice frame 19 and a plurality of prestressed anchor cable assemblies connected to the lattice frame 19, the slope body corresponding to the prestressed anchor cable assemblies is provided with a second anchor hole 15, the second anchor hole 15 is filled with concrete, the prestressed anchor cable assemblies include an extending section located in the second anchor hole 15 and a fixing section 16 located outside the second anchor hole 15, an anchorage device 20 for anchoring the fixing section 16 is arranged on an end portion of the fixing section 16 extending out of the lattice frame 19, a first cushion body 21 is arranged between the anchorage device 20 and the lattice frame 19, one side of the first cushion body 21 facing the lattice frame 19 is fixedly connected to the lattice frame 19, one side of the first cushion body 21 away from the lattice frame 19 is a matching surface for matching with the anchorage device 20, the mating surface is perpendicular to the axial direction of the second anchor eye 15.

The prestressed anchor cable supporting system 2 of the application is characterized in that the first cushion body 21 is arranged, the anchorage device 20 is arranged on the first cushion body 21, on one hand, the reliability of supporting the anchorage device 20 is improved, on the other hand, the matching surface of the first cushion body 21 and the anchorage device 20 is perpendicular to the axial direction of the second anchor hole 15, so that after the prestressed anchor cable assembly is anchored through the anchorage device 20, the extending section and the fixing section 16 are located on the same straight line, the risk that the anchorage device 20 is damaged due to the fact that the prestressed anchor cable assembly is pressed is reduced, meanwhile, the abrasion strength or cutting strength of the lateral edge of the anchorage device 20 to the prestressed anchor cable assembly is reduced, the prestressed anchor cable assembly is ensured to have reliable mechanical performance, and on the other hand, the reliability of fixing the prestressed anchor cable assembly through the anchorage device 20 is also ensured.

In a preferred embodiment, a second pad 24 is further disposed between the mating surface and the anchor 20, an edge of the second pad 24 exceeds an edge of the anchor 20, and an edge of the first pad 21 exceeds an edge of the second pad 24. The second cushion body 24 is arranged between the anchorage device 20 and the first cushion body 21, and the supporting strength and stability of the anchorage device 20 are further improved through the arrangement of the second cushion body 24.

In a preferred embodiment, the first pad 21 is a concrete cast structure, the first pad 21 and the lattice frame 19 are integrally cast, and the second pad 24 is a steel plate. The first cushion body 21 and the lattice frame body 19 are integrally cast, so that on one hand, construction is facilitated, on the other hand, the application of force of the prestressed anchor cable assembly is reliably transmitted to the lattice frame body 19, and the requirement on the construction precision of the first cushion body 21 is lowered due to the arrangement of the second cushion body 24, and construction is further facilitated.

In a preferred embodiment, concrete is further poured on the first pad body 21 to form an anchor cable sealing head 25, and the anchor cable sealing head 25 covers the fixing section 16 and the anchorage 20 of the prestressed anchor cable assembly. The anchor cable end socket 25 covers the fixing section 16 and the anchor 20, so that rainwater erosion is avoided, and the service life and the reliability of the prestressed anchor cable assembly are improved.

In a preferred embodiment, a second mesh rib 37 is further disposed in the anchor cable sealing head 25, and the second mesh rib 37 is welded to the fixing section 16 of the prestressed anchor cable assembly. The second mesh ribs 37 are arranged in the anchor cable end socket 25, and the second mesh ribs 37 are welded with the fixed section 16, so that the second mesh ribs 37 are arranged to facilitate construction of the anchor cable end socket 25 in the construction of the anchor cable end socket 25, the fixing strength of the anchor cable end socket 25 is improved, the fixed section 16 of the prestressed anchor cable assembly is further reinforced, and the risk of displacement of the prestressed anchor cable assembly is further reduced.

In a preferred embodiment, the lattice frame 19 is embedded into the slope body towards one side of the slope body, the lattice frame 19 includes a plurality of vertical rib columns and a plurality of horizontal rib columns, the vertical rib columns and the horizontal rib columns intersect to form a plurality of frame units, and the prestressed anchor cable assembly is arranged at the intersection position of the horizontal rib columns and the vertical rib columns.

In a preferred embodiment, the vertical rib columns in the same vertical direction are formed by integral casting, and the transverse rib columns in the same transverse direction are a plurality of transverse rib column sections which are connected between the adjacent vertical rib columns. The combination of the integral vertical rib column and the plurality of transverse rib column sections greatly facilitates the pouring construction of the lattice frame 19.

In a preferred embodiment, a retaining wall 35 is further provided on the ground corresponding to the bottom of the lattice frame 19, and a plurality of drain holes are further provided in the retaining wall 35.

Example 4, as shown in figures 1-9:

in addition to embodiments 1, 2 or 3, further, the end of the extension section of the prestressed anchor cable assembly is spaced from the bottom of the second anchor hole 15 to form a sand setting section 38.

In this embodiment, by providing the sand settling section 38 at the bottom of the second anchor hole 15, a space is provided for placing the sand dropped from the side wall of the second anchor hole 15 during drilling and the insertion of the prestressed anchor cable assembly, so as to ensure that the prestressed anchor cable extends into a sufficiently long section and prevent the dropped sand from abutting against the end of the prestressed anchor cable assembly to cause bending and blocking of the concrete pouring hole.

In a preferred embodiment, the length of the sand setting section 38 is 1/10-1/15 of the length of the second anchor hole 15.

In a preferred embodiment, the extension section of the prestressed anchor cable assembly is divided into a free section 17 and an anchoring section 18 along the direction from the opening of the second anchor hole 15 to the bottom of the hole, the free section 17 is a straight line parallel to the central axis of the second anchor hole 15, and the anchoring section 18 is used for fixedly connecting with the concrete in the second anchor hole 15. In the embodiment, the extending section of the prestressed anchor assembly is divided into a free section 17 and an anchoring section 18, the anchoring section 18 is fixedly connected with the concrete in the second anchor hole 15, when the prestressed anchor assembly is connected with the anchorage device 20, the free section 17 provides deformation to realize the prestress applied to the frame body, and on the other hand, the free section 17 provides deformation, so that the situation that the fixed section 16 is deformed to be separated from the external concrete when the prestressed anchor assembly is tensioned in the anchoring process of the anchorage device 20 is avoided, and thus, the tightness and the reliability of the fixation between the prestressed anchor assembly and the concrete are also ensured.

In a preferred embodiment, a sleeve 22 is further sleeved outside the free section 17, sealing elements 23 are arranged at two ends of the sleeve 22, the free section 17 is sealed in the sleeve 22, and the sealing elements 23 are flexible sealing elements 23. The free section 17 is separated from external concrete by arranging the sleeve 22, and the gap between the end of the sleeve 22 and the free section 17 is ensured by the sealing piece 23, so that concrete does not enter the sleeve 22 in the concrete pouring process, and good tension deformation of the free section 17 is further ensured.

In a preferred embodiment, the sealing element 23 is filled between the free section 17 and the sleeve 22, and the length of the sealing element 23 is 100 mm and 200 mm. The seal 23 is set to such a length that the reliability of the seal is ensured.

In a preferred embodiment, the seal 23 is butter. Adopt the butter as sealing member 23, not only can play good sealed effect, prevent that steam from entering into free section 17 in, reduce free section 17 corrosion risk, but also can play good lubricated effect, the hindrance that receives when reducing free section 17 prestressing force and warping.

In a preferred embodiment, the free section 17 is coated with a corrosion resistant coating. Further improving the corrosion resistance and rust prevention capability of the free section 17.

In a preferred embodiment, the prestressed anchor cable assembly comprises a grouting pipe 30 and a plurality of steel strands 31, the steel strands 31 are circumferentially arrayed outside the grouting pipe 30 along the grouting pipe 30, a first expansion ring 26 is further arranged at the end part of the anchoring section 18 facing the free section 17, a second expansion ring 27 is further arranged in the middle of the anchoring section 18, the first expansion ring 26 and the second expansion ring 27 are used for supporting the steel strands 31, through holes for the steel strands 31 to pass through are formed in the first expansion ring 26 and the second expansion ring 27, the through holes correspond to the through holes of the steel strands 31 in the anchorage device 20, the radial heights of the steel strands 31 at the anchorage device 20, the first expansion ring 26 and the second expansion ring 27 are equal to the radial height of the grouting pipe 30, a first restraint ring 28 is further arranged between the first expansion ring 26 and the second expansion ring 27, the first restraining ring 28 is used for restraining the steel strands 31 in the radial direction of the grouting pipe 30, so that the steel strands 31 at the first restraining ring 28 are attached to the outside of the grouting pipe 30. In the embodiment, the first expansion ring 26, the second expansion ring 27 and the first restraint ring 28 are provided to vary the radial dimension of the anchoring section 18 of the prestressed anchor cable assembly at each position, and after the concrete is cast in the second anchor hole 15, the anchoring section 18 is fixed in the axial direction of the prestressed anchor cable assembly.

In a preferred embodiment, a second restraining ring 29 is further disposed on the anchoring section 18, the second restraining ring 29 is located between the outlet of the grouting pipe 30 and the second expansion ring 27, and the second restraining ring 29 is used for restraining the steel strands 31 in the radial direction of the grouting pipe 30, so that the steel strands 31 at the second restraining ring 29 are attached to the outside of the grouting pipe 30. The second restraining ring 29 further increases the radial undulation position on the anchoring section 18, so as to further improve the fixed strength and stability of the anchoring section 18, and on the other hand, the stress of the anchoring section 18 at each position in the axial direction is more uniform, so that the risk of anchoring failure caused by local damage due to excessive local stress is reduced.

In a preferred embodiment, the first and second stent rings 27, 28, 29 are symmetrically disposed about the second stent ring 27. This further improves the uniformity of the force applied to the anchoring section 18 at each position in the axial direction.

In a preferred embodiment, a corrugated pipe 32 is further sleeved outside the prestressed anchor cable assembly, one end of the corrugated pipe 32 is located at the opening of the second anchor hole 15, the other end of the corrugated pipe 32 is located in the anchoring section 18 beyond the end of the prestressed anchor cable assembly, a guide cap 33 is arranged on the end of the corrugated pipe 32 at the anchoring section 18, and a notch 34 is arranged on the guide cap 33. In this embodiment, the corrugated pipe 32 is arranged, and the guide cap 33 is arranged on the corrugated pipe 32, so that the pre-stressed anchor cable assembly can be conveniently placed in the construction, the risk that the pre-stressed assembly is scratched by the side wall of the second anchor hole 15 in the placing construction is reduced, and meanwhile, the guide cap 33 is arranged to play a guiding role and prevent the grouting pipe 30 from being blocked by sand in the second anchor hole 15.

In a preferred embodiment, the guide cap 33 is a shell structure protruding away from the prestressed anchor cable assembly.

In a preferred embodiment, a notch 34 for allowing concrete to pass through is provided on the guide cap 33, and the notch 34 is in a U shape extending from one side of the guide cap 33 to the other side of the guide cap 33 and passing through the top of the guide cap 33.

In the embodiment, the notch 34 is arranged in a strip-shaped U shape, so that the notch 34 has a larger opening area, the grouting efficiency is improved, and the risk that sand blocks the notch 34 in the process of placing the prestressed assembly can be effectively reduced; after the concrete is hardened, the concrete also serves to fix the guide cap 33 in the axial direction of the prestressed anchor cable, thereby further improving the reliability of the anchor rod 7.

In a preferred embodiment, the notches 34 are several, and the notches 34 are spaced apart from each other and are uniformly distributed along the circumferential direction. By adopting the mode, the pouring efficiency of the concrete is further improved, and in the pouring process of the concrete, the concrete is output from the circumferential direction of the guide cap 33, so that the formation of gaps in the second anchor hole 15 can be greatly reduced, and the structural strength and the mechanical property of the concrete are further improved; on the other hand, each gap 34 is crossed at the top end of the guide cap 33, so that the gap 34 at the top end has a larger size, when large-particle-size stones are mixed in concrete, the stones can be discharged, and the risk that the gap 34 is blocked is reduced.

In a preferred embodiment, the notch 34 is helically curved around the guide cap 33. In this kind of mode, set up breach 34 around guide cap 33 is the heliciform bending, the crooked direction of each breach 34 is the same, in the concrete pouring process, the concrete is exported with certain precession by breach 34, on the one hand is further to do benefit to the discharge of the downthehole gas of anchor, reduce the space in the concrete, on the other hand, still make the grit in second anchor eye 15 sand setting section 38 can with concrete, reduce the grit and assemble in sand setting section 38 local position, and cause the risk of this position concrete disappearance, further improvement second anchor eye 15 in concrete structural strength and mechanical properties.

In a preferred embodiment, the notch 34 is sharp-edged around the edge. During the concrete casting process of the second anchor eye 15, when debris or clots are mixed in the concrete and block the gap 34, the concrete pushes the debris or clots to slide along the gap 34, during which the edges of the gap 34 cut the debris or clots, thus further reducing the risk of the gap 34 becoming blocked.

The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement may be made to the present invention; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims (10)

1. The utility model provides a support system for high steep slope is supported which characterized in that: including the prestressed anchorage cable support system and the anchor bolt support system that set up along the slope of side slope, prestressed anchorage cable support system upwards sets up from domatic bottom, and with the lateral part and the top of side slope separate, the anchor bolt support system sets up prestressed anchorage cable support system is peripheral, the anchor bolt support system with prestressed anchorage cable support system meets to including the top and the lateral part cladding of side slope, a support system for steep slope support still includes the injection concrete layer and adopts the reinforcing bar to weave the first guick that forms, first guick is laid on the domatic that the anchor bolt support system corresponds, the injection concrete layer sprays on the domatic that the anchor bolt support system corresponds, and will including the first guick cladding.

2. A support system for high and steep slope support as claimed in claim 1, wherein: the first net rib is bent towards the top surface of the slope at the top of the slope and covers the top surface of the slope.

3. A support system for high and steep slope support as claimed in claim 2, wherein: the first net rib positioned on the top of the slope is of a double-layer first net rib structure.

4. A support system for high steep slope support according to claim 2 or 3, wherein: and a plurality of steel bar sections are also arranged on the slope top, and the steel bar sections are vertically inserted into the slope body and are welded with the first mesh bars on the slope top.

5. A support system for high and steep slope support as claimed in claim 4, wherein: the anchor bolt support system still includes a plurality of stock, the stock corresponds it is equipped with first anchor eye to bore on the slope body, stock one end inserts and corresponds separately in the first anchor eye, the other end with first net muscle links to each other it has the concrete to pour into in the first anchor eye be provided with the support on the stock, the support cooperatees with first anchor eye lateral wall, makes the stock is located the center axis position in first anchor eye.

6. A support system for high and steep slope support as claimed in claim 5, wherein: the support includes a plurality of supporting parts around stock circumference equipartition, separates mutually between the adjacent supporting part, the both ends of supporting part with the stock is connected, the middle part orientation of supporting part first anchor eye lateral wall is protruding, form with first anchor eye lateral wall matched with cooperation portion.

7. A support system for high and steep slope support as claimed in claim 6, wherein: the matching part of the supporting part is parallel to the anchor rod.

8. A support system for high and steep slope support as claimed in claim 7, wherein: the supports arranged on the same anchor rod are staggered along the axial direction of the anchor rod.

9. A support system for high and steep slope support as claimed in claim 5, wherein: the anchor rods are arranged in a vertical layered mode, adjacent anchor rods on the same layer are separated from each other, each anchor rod comprises a long anchor rod with long length and a short anchor rod with short length, the anchor rods on the same layer are the same in length, and the anchor rods on adjacent layers are different in length.

10. A support system for high and steep slope support as claimed in claim 5, wherein: the support system further comprises a water intercepting ditch, the water intercepting ditch is arranged on a slope above the anchor bolt support system, and the sprayed concrete layer extends towards the water intercepting ditch and forms an integral concrete structure with the concrete layer of the water intercepting ditch.

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