CN111809521A - Tunnel type anchorage structure for cable crane and construction method thereof - Google Patents
Tunnel type anchorage structure for cable crane and construction method thereof Download PDFInfo
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- CN111809521A CN111809521A CN202010513200.2A CN202010513200A CN111809521A CN 111809521 A CN111809521 A CN 111809521A CN 202010513200 A CN202010513200 A CN 202010513200A CN 111809521 A CN111809521 A CN 111809521A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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Abstract
The invention discloses a tunnel type anchorage structure for a cable crane, which comprises an anchor plug body, an anchor cable and an anchor beam for anchoring the cable, wherein the anchor plug body comprises an outer end positioned on the outer side of a tunnel and an inner end positioned on the inner side of the tunnel, the anchor beam is fixed at the outer end of the anchor plug body, the anchor cable is partially pre-buried in the anchor plug body, one end of the anchor cable is anchored in the inner end of the anchor plug body, and the other end of the anchor cable penetrates through the anchor beam and the exposed part of the anchor cable is anchored on the outer side of the anchor beam. The invention also discloses a construction method of the anchorage structure, which comprises the steps of excavating a tunnel, binding reinforcing steel bars, installing anchor cables and cable wind cables, pouring concrete, installing anchors, stretching the anchor cables, installing the cable cables and the like. The invention has the advantages of simple structure, good anchoring performance, safety, reliability and the like, is convenient for dismantling various cables in the later period, and also improves the safety and convenience of construction and application of the tunnel type anchorage structure of the large cable crane.
Description
Technical Field
The invention belongs to the field of civil engineering, relates to design and construction of a large cable crane, and particularly relates to a tunnel type anchorage structure for the cable crane and a construction method thereof.
Background
The cable crane is a common hoisting and transporting machine for large-span arch bridge construction, the anchorage is an important bearing structure of the cable crane, and various cable forces of the cable crane are required to be transmitted to the foundation through the anchorage. The types of the anchorage include gravity type, tunnel type, rock anchorage and the like, wherein the gravity type anchorage mainly balances the cable force by self gravity, has simple structure and reliable stress, but has large concrete consumption and great influence on the surrounding environment; the tunnel type anchorage is characterized in that a tunnel is excavated in a rock mass, concrete is poured in the tunnel, and the tunnel and the surrounding rock mass act together to form an anchor plug body so as to balance cable force, so that the construction process is complex, but the concrete consumption is low, and the influence on the surrounding environment is small; the rock anchor type generally needs to be provided with a concrete anchoring wall, after the anchoring wall is anchored through the pre-stressed anchor cable, the cable is anchored on the anchoring wall, is limited by the stress performance of the pre-stressed anchor cable, and is generally suitable for the condition of small cable force.
When the large cable crane is built and used in mountainous areas, a proper anchorage structure is adopted according to the landform and the geological conditions of the engineering according to the local conditions. The tunnel type anchorage is widely applied due to low concrete consumption. In the existing tunnel type anchorage structure, two main anchoring modes are adopted for a cable, wherein one mode is that the cable is directly anchored inside an anchor plug body after being turned by a cable saddle; one is to arrange an anchorage outside the anchor plug body, a commonly used anchorage with a double-screw type adjustment anchorage or a fixed pulley block anchorage, and transmit the cable force of the cable to the anchorage through the double-screw type adjustment anchorage or the fixed pulley block anchorage. Because the cable crane is generally a temporary structure, after the cable crane is used, various cables need to be removed, so an anchorage device for cable force conversion is required to be arranged, and the cable of the cable crane is anchored outside the anchor plug body. The existing anchorage device is complex in structure and inconvenient to install and detach the cable, and 1 group of anchorage devices can only anchor 1 main cable generally, so that the anchorage device is inconvenient to apply to an anchorage structure of a large-scale cable crane.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a tunnel type anchorage structure for a cable crane and a construction method thereof, wherein the tunnel type anchorage structure is simple in structure, safe, reliable and convenient to construct, various cables can be intensively anchored, and the later cables are convenient to detach.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the utility model provides a tunnel type anchorage structure for cable loop wheel machine, includes anchor chock body, anchor rope and the anchor roof beam that is used for the anchor cable, the anchor chock body is including the outer end that is located the tunnel outside and the inner end that is located the tunnel inboard, the anchor roof beam is fixed in the outer end department of anchor chock body, anchor rope part is buried in anchor chock body in advance, and the one end anchor of anchor rope in the inner end of anchor chock body, and the other end of anchor rope passes anchor roof beam and exposes partial anchor in the outside of anchor roof beam.
The tunnel type anchorage structure for the cable crane preferably further comprises a base plate, wherein an anchor rib is arranged on one side of the base plate and anchored in the anchor plug body, a supporting and stiffening plate is arranged on the other side of the base plate, the anchoring beam is fixed on the supporting and stiffening plate, and an anchor cable hole for the anchor cable to pass through is formed in the base plate.
Preferably, the support stiffening plate comprises a plurality of support stiffening plate groups arranged at intervals, each support stiffening plate group comprises two symmetrically arranged plate blocks, grooves for the anchoring beams to be placed into are arranged on the plate blocks, the anchor cable holes are formed between the two mutually symmetrical plate blocks, and the cable and the anchor cables are arranged on the anchoring beams in a staggered manner.
In the tunnel type anchorage structure for the cable crane, preferably, the anchoring areas of the outer end and the inner end of the anchor plug body are provided with a plurality of layers of local pressure-bearing reinforcing mesh.
In the tunnel type anchorage structure for the cable crane, preferably, the anchoring beam is filled with concrete, the anchoring beam is provided with a through hole, a lining pipe penetrates through the through hole, and the anchor cable is arranged in the lining pipe.
In the tunnel type anchorage structure for the cable crane, preferably, the exposed part of the other end of the anchor cable is anchored on the outer side of the anchoring beam through the anchor plate and is provided with the protective cover, and the anchor backing plate is arranged between the anchor plate and the lining pipe.
Preferably, the tunnel type anchorage structure for the cable crane further comprises a cable wind cable, one end of the cable wind cable is anchored in the inner end of the anchor plug body, the other end of the cable wind cable directly penetrates out of the outer end of the anchor plug body, and the exposed part of the cable wind cable extends to the top of the main tower of the cable crane.
The tunnel type anchorage structure for the cable crane is preferably characterized in that concrete is filled in the anchor plug body, the cross section of the anchor plug body is in a horseshoe shape, the anchor plug body comprises a straight line section, a gradual change section and an anchoring section for anchoring the anchor cable, the anchoring section is arranged on the inner side of the tunnel type anchorage structure, the straight line section is arranged on the outer side of the tunnel type anchorage structure, and the gradual change section is arranged between the anchoring section and the straight line section.
In the tunnel type anchorage structure for the cable crane, preferably, the inclination angle of the axis of the anchor plug body is the same as that of the cable.
As a general inventive concept, the present invention also provides a construction method of the above tunnel type anchorage structure for a cable crane, including the steps of:
s1: excavating a tunnel, processing a tunnel portal, excavating a tunnel body, and supporting while excavating;
s2: binding reinforcing steel bars, and binding the reinforcing steel bars after the tunnel body of the tunnel is excavated so that the reinforcing steel bar net is tightly attached to the surrounding rock;
s3: installing an anchor cable and a cable wind cable, installing a fixed end anchor plate of the anchor cable and the cable wind cable on the inner side of the tunnel after the binding of the reinforcing steel bars is finished, and pre-burying a prestressed steel strand;
s4: pouring concrete, mounting a template on the outer end face of the anchor plug body, mounting a base plate, and then pouring concrete into the anchor plug body;
s5: mounting an anchorage device and a tensioning anchor cable, mounting a support reinforcing plate after the concrete of the anchor plug body reaches the design strength, then mounting an anchoring beam, and tensioning the prestressed steel strand of the anchor cable after all the anchoring beams are mounted;
s6: installing a cable: and after the construction of the anchorage structure is finished, the cable of the cable crane is anchored and installed on the anchoring beam.
Compared with the prior art, the invention has the advantages that:
the anchorage structure of the invention adopts the anchoring beam to perform cable force conversion, has the advantages of simple structure, safety, reliability, good anchoring performance and the like, one end of the anchor cable is anchored at the inner side of the tunnel, the other end of the anchor cable penetrates through the anchoring beam, the exposed part of the anchor cable is anchored at the outer side of the anchoring beam, various cables such as a main cable, a traction cable, a hoisting cable and the like of the cable crane except a wind cable can be intensively anchored at the anchoring beam, the number of the anchorable cables is large, the cable is convenient to remove various cables in the later period, the cables and the anchor cables can be arranged on the anchoring beam in a staggered way, so that the anchoring force of the anchor cables and the cable force of the cables are balanced, the safety and the convenience of the construction and the application of the tunnel type anchorage structure of the cable crane are improved, the conditions can be made according to the circumstances, the method has the advantages that the proper inclination angle is set according to the landform conditions, the stress performance of the mountain is fully exerted, the concrete consumption is saved, the construction cost is reduced, and the method is particularly suitable for large cable cranes.
The construction method can carry out the construction of the anchorage structure according to the working performance requirement of the cable crane, the site topography and the engineering geological conditions to obtain the tunnel type anchorage structure suitable for the large cable crane.
Drawings
Fig. 1 is a schematic side elevation view of an anchor structure of the embodiment.
Fig. 2 is a schematic perspective view of an anchor structure of the embodiment.
Fig. 3 is a schematic perspective view of the base plate, anchor bars and the stiffening plate.
Fig. 4 is a perspective view of the anchoring beam in the embodiment.
FIG. 5 is a perspective view of the lining pipe, the anchor pad plate and the anchor plate in the embodiment.
Illustration of the drawings:
1. an anchor plug body; 1-1, straight line segment; 1-2, transition section; 1-3, an anchoring section; 1-4, an outer end head; 1-5, inner end; 2. a base plate; 2-1, anchor cable holes; 3. anchoring the beam; 3-1, through holes; 4. an anchor plate; 5. an anchor backing plate; 6. an anchor cable; 7. a cable wind cable; 8. anchoring ribs; 9. supporting the stiffening plate; 10. a cable; 11. a liner tube; 12. sealing the end plate; 13. a protective cover.
Detailed Description
In order to facilitate understanding of the invention, the invention will be described more fully and in detail with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
The large cable crane is common air transportation equipment in arch bridge construction, the anchorage is an important bearing structure of the cable crane, and various cable forces of the cable crane are required to be transmitted to a foundation through the anchorage. When the landform and the geological conditions of the bridge site are appropriate, the tunnel type anchorage is applied, so that the consumption of concrete can be greatly saved, the exposed part is less, and the influence on the environment is small. The embodiment provides a tunnel type anchorage structure for a large-scale cable crane.
As shown in fig. 1 and 2, the tunnel type anchorage structure for a cable crane of the present embodiment specifically includes an anchor plug body 1, a base plate 2, an anchor beam 3, an anchor plate 4, an anchor backing plate 5, an anchor cable 6, and an embedded cable wind cable 7.
In this embodiment, the anchor plug body 1 includes an outer end 1-4 located outside the tunnel and an inner end 1-5 located inside the tunnel, the anchor beam 3 is fixed at the outer end 1-4 of the anchor plug body 1, specifically, the anchor beam 3 is fixed on the anchor plug body 1 through the base plate 2 and the support stiffening plate 9, the anchor cable 6 is partially embedded in the anchor plug body 1, one end of the anchor cable 6 is anchored in the inner end 1-5 of the anchor plug body 1, the other end of the anchor cable 6 passes through the anchor beam 3 and the exposed portion is anchored outside the anchor beam 3, and the cable 10 is anchored on the anchor beam 3. As can be seen from figure 1, two groups of parallel anchoring beams 3 are fixed at the outer end heads 1-4 of the anchor plug body 1, and the anchor plug bodyTwo anchor cables 6 corresponding to the two groups of anchoring beams 3 are also arranged at the inner end heads 1-5 of the body 1 and in the anchor plug body 1. Specifically, the anchor cable 6 iss15.24 prestressed steel strand, single anchor cable 6 adopts 8-phis15.24 steel strand wires, anchor rope 6 adopt single-end stretch-draw mode, and inside adopts P type extrusion anchor, and the one end anchor of anchor rope 6 is in anchor section 1-3 of anchor cock body 1, and the section overcoat that buries of anchor rope 6 has the PVC sleeve pipe to stretch-draw later stage is convenient for, and anchor rope 6 passes through anchor slab 4 anchor outside anchor beam 3 after exposing the section stretch-draw. This anchorage structure simple structure, safety and reliability, various cables 10 such as the main rope except cable wind cable 7 of cable loop wheel machine, the haulage cable, the jack-up cable all can concentrate anchor in anchor beam 3, pass the back with cable 10 from anchor beam 3, rethread shackle ligature is fixed in order to twine cable 10 on anchor beam 3, the quantity of cable 10 that once can anchor is many, only need remove when cable 10 demolishs to break out again hoist engine slowly release can, be convenient for demolish of various cables 10 of later stage, construction and applied convenience has been improved, can be suitable according to local conditions, set up suitable inclination according to topography and topography conditions, give full play to mountain body atress performance, practice thrift the concrete consumption, and construction cost is reduced, and the anchor loop wheel machine is particularly suitable for large-scale cable loop wheel machine.
In the embodiment, concrete is filled in the anchor plug body 1, the cross section of the anchor plug body 1 is in a horseshoe shape, the anchor plug body 1 comprises a straight line section 1-1, a gradual change section 1-2 and an anchoring section 1-3 for anchoring the anchor rope 6, the anchoring section 1-3 is arranged on the inner side of the tunnel type anchor structure, the straight line section 1-1 is arranged on the outer side of the tunnel type anchor structure, and the gradual change section 1-2 is arranged between the anchoring section 1-3 and the straight line section 1-1. Considering the bearing capacity and the stability of the mountain, the anchor plug body 1 adopts a three-section structure, the main function of the anchor plug body 1 is pulling resistance, and the pulling resistance bearing capacity mainly comprises the peripheral adhesive force and the frictional resistance of a straight section 1-1, the normal pressure of a gradual change section 1-2 and the dead weight; in order to ensure the stability of the mountain, the burial depth of the transition section 1-2 cannot be too shallow; in order to prevent the self structure of the anchor plug body 1 from being damaged, the slope rate of the transition section 1-2 of the anchor plug body 1 cannot be too large; the innermost anchoring sections 1-3 can provide uplift bearing capacity on one hand, and can also provide anchoring space of an anchor cable, so that workers can operate conveniently in the hole. Specifically, the anchor plug body 1 is of a reinforced concrete structure, the concrete strength grade is C30, the anchor plug body 1 can be divided into three sections of a straight line section 1-1, a gradual change section 1-2 and an anchoring section 1-3 according to the vertical profile of the anchor plug body, the gradual change section 1-2 is uniformly diffused to the periphery to play a gradual change transition role, the size of the profile of the gradual change section is reduced from inside to outside along with the tunnel, and the transition from the horseshoe-shaped anchoring section 1-3 to the rectangular straight line section 1-1 of the cross section profile is realized. Specifically, for a cable crane with the rated lifting capacity of 150t, the cable force of a main cable of the cable crane reaches over kiloton, the total length of an anchor plug body 1 is 46m, the length of a straight line segment 1-1 is 40.0m, the length of a gradual change segment 1-2 is 5.0m, the length of an anchor segment 1-3 is 1.0m, the inclination angle with the horizontal plane is 36.8 degrees, the height of the section of the straight line segment 1-1 is 2.0m, the width of the section of the straight line segment is 2.0m, and the height of the section of the anchor segment 1-3 is 7.0m and the width of the.
In this embodiment, the inclination angle of the axis of the anchor plug 1 is the same as the inclination angle of the cable 10, so as to ensure that the stress direction of the anchor plug 1 is consistent with the direction of the cable 10, and prevent the anchor plug 1 from being bent to cause bending damage and even breaking or cause instability of the hole wall.
As shown in fig. 3, in this embodiment, in order to fix the anchor beam 3 to the outer end 1-4 of the anchor plug body 1, structures such as a base plate 2 and a support stiffening plate 9 are provided, one side of the base plate 2 is provided with an anchor bar 8, the anchor bar 8 is anchored in the anchor plug body 1, the base plate 2 is stably connected with the anchor plug body 1 through the anchoring effect of the anchor bar 8, the other side of the base plate 2 is provided with the support stiffening plate 9, the anchor beam 3 is welded on the support stiffening plate 9, the support stiffening plate 9 plays a supporting and connecting role for the anchor beam 3, and simultaneously, a gap between the base plate 2 and the anchor beam 3 is enlarged to facilitate the cable 10 to pass through the gap, the base plate 2 is provided with an anchor cable hole 2-1 for the anchor cable 6 to pass through, and the anchor cable 6 passes through the anchor cable hole 2-1. Specifically, the base plate 2 is made of a steel plate with the thickness of 12mm through cutting, the anchor bars 8 are made of steel bars with the diameter of 20mm, the length of each anchor bar is 65cm, and the support stiffening plate 9 is made of a steel plate with the thickness of 30mm through cutting.
In this embodiment, the support stiffening plate 9 includes a plurality of support stiffening plate groups arranged at intervals, each support stiffening plate group includes two symmetrically arranged plate blocks, the plate blocks are provided with grooves for the anchor beam 3 to be placed in, the anchor cable holes 2-1 are arranged between the two mutually symmetrical plate blocks, and the cable 10 and the anchor cables 6 are arranged on the anchor beam 3 in a staggered manner. The supporting stiffening plate groups arranged at intervals can transversely limit the cable 10, operation during cable threading is facilitated, the cable 10 can be prevented from sliding left and right, anchoring of various cables 10 of a cable crane on the anchoring beam 3 is facilitated, the anchoring beam 3 can be embedded into the groove structures on the plate conveniently, the contact surface is larger, supporting and fixing are firmer, the positions of the anchor cable holes 2-1 are set through optimization, the external cable 10 and the internal anchor cable 6 can be arranged on the anchoring beam 3 in a staggered mode, and anchoring force of the anchor cable 6 and cable force of the cable 10 are balanced.
In this embodiment, the anchoring areas of the outer end 1-4 and the inner end 1-5 of the anchor plug body 1 are provided with multiple layers of local pressure-bearing reinforcing meshes to prevent local pressure damage of concrete. Specifically, in this embodiment, 4 to 5 layers of local pressure-bearing reinforcing steel bar nets are arranged, the pressure-bearing reinforcing steel bar net is made of phi 12mm reinforcing steel bars, and the grid size is 10cm × 10 cm.
As shown in fig. 4, in the present embodiment, the anchor beam 3 is filled with concrete, the anchor beam 3 is provided with a through hole 3-1, a lining pipe 11 is arranged in the through hole 3-1, and the anchor cable 6 is arranged in the lining pipe 11. The inner lining pipe 11 separates the anchor cable 6 from the concrete poured into the anchoring beam 3, so that the anchor cable 6 can conveniently penetrate through the anchoring beam 3 and be tensioned. Specifically, the anchoring beam 3 is a steel pipe concrete member, the steel pipe is a phi 630 × 20mm straight slit steel pipe, the strength grade of the concrete filled in the steel pipe is C30, the through hole 3-1 is a circular hole with the diameter of 115mm, a lining pipe 11 penetrates into the circular hole, the lining pipe 11 is welded with the anchoring beam 3, the outer end of the lining pipe 11 does not extend out of the anchoring beam 3, the inner end of the lining pipe 11 extends out by 5cm, the lining pipe 11 is a phi 110 × 5mm seamless steel pipe, two ends of the anchoring beam 3 are provided with end sealing plates 12, and the end sealing plates 12 are formed by cutting steel plates with the thickness of 8 mm-10 mm.
In this embodiment, as shown in fig. 5, the exposed part of the other end of the anchor line 6 is anchored to the outside of the anchor beam 3 through the anchor plate 4 and provided with a protective cover 13, and an anchor pad 5 is provided between the anchor plate 4 and the inner liner 11. Because the service cycle of the cable crane is longer, in order to prevent the anchor cable 6 of the exposed part from being corroded, a galvanized steel pipe protective cover is arranged at the exposed section of the anchor cable 6. Anchor backing plate 5 and anchor roof beam 3 welded connection, anchor backing plate 5 can disperse the powerful concentrated power of anchor slab 4, transmit anchor 6's anchor power to anchor roof beam 3 on, be convenient for simultaneously with other anchor down component connection. Specifically, the anchor backing plate 5 is made of a steel plate with the thickness of 20mm through cutting.
In this embodiment, the tunnel type anchorage structure further includes a cable wind cable 7, one end of the cable wind cable 7 is anchored in the inner end 1-5 of the anchor plug body 1, the other end of the cable wind cable 7 directly penetrates out from the outer end 1-4 of the anchor plug body 1, and the exposed part extends to the top of the main tower of the cable crane. Specifically, the cable 7 iss15.24 prestressed steel strand, single cable wind cable 7 adopts 6-phis15.24 steel strand wires, the cable wind cable 7 adopts a single-end tensioning mode, a P-type extrusion anchor is adopted inside, one end of the cable wind cable is anchored in the anchoring section 1-3 of the anchor plug body 1, and a PVC sleeve is sleeved outside the embedded section of the cable wind cable 7 so as to facilitate later-stage tensioning.
The construction method of the tunnel type anchorage structure of the embodiment comprises the following steps: designing specific dimensions according to the working performance requirement of the cable crane, the site topography and landform and the engineering geological conditions, and constructing according to the following steps:
s1: excavating a tunnel; firstly, processing a tunnel portal, digging a construction platform at the portal by using a digging machine before digging a tunnel body, digging a intercepting ditch at the top of the portal, digging a drainage ditch before the tunnel, and meanwhile, well supporting the portal; then excavating a tunnel body, supporting while excavating, excavating the soil part of the tunnel body manually, perforating the rock stratum part manually, blasting shallow holes, excavating from two ends to the middle, transporting discarded slag by a winch tractor trolley, closely observing the deformation condition of surrounding rocks during the excavation of the tunnel body, rechecking the angle and section size of the tunnel body, finding out deviation, correcting in time, excavating while supporting during excavation, wherein the tunnel body is supported by a phi 48 multiplied by 3.0mm steel pipe frame, and a steel plate with the thickness of 3mm is laid on the top of the tunnel body;
s2: binding reinforcing steel bars, removing floating soil and loose stones on the rock wall after the excavation of the tunnel body is finished, binding the reinforcing steel bars, enabling the reinforcing steel bar net to be tightly attached to the surrounding rock, and reserving a protective layer with the thickness of 6 cm;
s3: installing an anchor cable 6 and an embedded cable wind cable 7, installing an anchor plate at the inner fixed end of the anchor cable 6 and the cable wind cable 7 at the inner side of the tunnel after the steel bars are bound, embedding a prestressed steel strand, and sleeving a PVC pipe on the steel strand so as to facilitate later-stage tensioning;
s4: pouring concrete, installing a template on the outer end face of the anchor plug body 1, installing a base plate 2, and then pouring C30 self-sealing concrete into the anchor plug body 1;
s5: mounting an anchorage device and a tensioning anchor cable, curing the concrete of the anchor plug body 1 for 7 days, sequentially mounting a support stiffening plate 9, a steel pipe concrete anchoring beam 3, an anchor backing plate 5, a lining pipe 11 and other components after reaching the design strength, and tensioning the prestressed steel strand of the anchor cable 6 after all the components are mounted and inspected;
s6: installing the cable 10: and after the construction of the anchorage structure is finished and the construction is accepted, anchoring the cable 10 of the cable crane on the anchoring beam 3.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. The utility model provides a tunnel type anchorage structure for cable loop wheel machine which characterized in that: the anchor comprises an anchor plug body (1), an anchor cable (6) and an anchor beam (3) used for anchoring the cable (10), wherein the anchor plug body (1) comprises outer end heads (1-4) located on the outer side of a tunnel and inner end heads (1-5) located on the inner side of the tunnel, the anchor beam (3) is fixed at the outer end heads (1-4) of the anchor plug body (1), the anchor cable (6) is partially embedded in the anchor plug body (1), one end of the anchor cable (6) is anchored in the inner end heads (1-5) of the anchor plug body (1), and the other end of the anchor cable (6) penetrates through the anchor beam (3) and is anchored in the outer side of the anchor beam (3) through an exposed part.
2. The tunnel-type anchorage structure for cable cranes of claim 1, characterized in that: the tunnel type anchorage structure further comprises a base plate (2), wherein one side of the base plate (2) is provided with an anchor rib (8), the anchor rib (8) is anchored in the anchor plug body (1), the other side of the base plate (2) is provided with a supporting stiffening plate (9), the anchoring beam (3) is fixed on the supporting stiffening plate (9), and the base plate (2) is provided with an anchor cable hole (2-1) for the anchor cable (6) to pass through.
3. The tunnel-type anchorage structure for cable cranes of claim 2, characterized in that: the supporting stiffening plate (9) comprises a plurality of supporting stiffening plate groups arranged at intervals, each supporting stiffening plate group comprises two symmetrically arranged plate blocks, grooves for the anchoring beams (3) to be placed in are formed in the plate blocks, the anchor cable holes (2-1) are formed between the two mutually symmetrical plate blocks, and the cable ropes (10) and the anchor cables (6) are arranged on the anchoring beams (3) in a mutually staggered mode.
4. The tunnel-type anchorage structure for cable cranes of claim 2, characterized in that: and the anchoring areas of the outer end heads (1-4) and the inner end heads (1-5) of the anchor plug body (1) are provided with a plurality of layers of local pressure-bearing reinforcing steel bar meshes.
5. The tunnel-type anchorage structure for cable cranes of claim 1, characterized in that: concrete is filled in the anchoring beam (3), a through hole (3-1) is formed in the anchoring beam (3), a lining pipe (11) penetrates through the through hole (3-1), and the anchor cable (6) is arranged in the lining pipe (11).
6. The tunnel-type anchorage structure for cable cranes of claim 5, characterized in that: the exposed part at the other end of the anchor cable (6) is anchored on the outer side of the anchoring beam (3) through an anchor plate (4) and is provided with a protective cover (13), and an anchor backing plate (5) is arranged between the anchor plate (4) and the lining pipe (11).
7. The tunnel tie back structure for a cable crane according to any one of claims 1 to 6, wherein: the anchor plug body (1) is filled with concrete, the cross section of the anchor plug body (1) is in a horseshoe shape, the anchor plug body (1) comprises a straight line section (1-1), a gradual change section (1-2) and an anchoring section (1-3) used for anchoring the anchor rope (6), the anchoring section (1-3) is arranged on the inner side of the tunnel type anchorage structure, the straight line section (1-1) is arranged on the outer side of the tunnel type anchorage structure, and the gradual change section (1-2) is arranged between the anchoring section (1-3) and the straight line section (1-1).
8. The tunnel tie back structure for a cable crane according to any one of claims 1 to 6, wherein: the inclination angle of the axis of the anchor plug body (1) is the same as that of the cable (10).
9. A construction method of a tunnel type anchorage structure for a cable crane according to any one of claims 1 to 8, characterized in that: comprises the following steps of (a) carrying out,
s1: excavating a tunnel, processing a tunnel portal, excavating a tunnel body, and supporting while excavating;
s2: binding reinforcing steel bars, and binding the reinforcing steel bars after the tunnel body of the tunnel is excavated so that the reinforcing steel bar net is tightly attached to the surrounding rock;
s3: installing an anchor cable (6) and a cable wind cable (10), installing a fixed end anchor plate of the anchor cable (6) and the cable wind cable (10) on the inner side of the tunnel after the reinforcement is bound, and embedding a prestressed steel strand;
s4: pouring concrete, installing a template on the outer end face of the anchor plug body (1), installing a base plate (2), and then pouring concrete into the anchor plug body (1);
s5: mounting an anchorage device and a tensioning anchor cable (6), mounting a support stiffening plate (9) after the concrete of the anchor plug body (1) reaches the design strength, then mounting an anchoring beam (3), and tensioning the prestressed steel strands of the anchor cable (6) after all the mounting is finished;
s6: installation cable (10): after the construction of the anchorage structure is finished, a cable (10) of the cable crane is anchored and installed on the anchoring beam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010513200.2A CN111809521A (en) | 2020-06-08 | 2020-06-08 | Tunnel type anchorage structure for cable crane and construction method thereof |
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| CN202010513200.2A CN111809521A (en) | 2020-06-08 | 2020-06-08 | Tunnel type anchorage structure for cable crane and construction method thereof |
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| CN111809521A true CN111809521A (en) | 2020-10-23 |
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| CN202010513200.2A Pending CN111809521A (en) | 2020-06-08 | 2020-06-08 | Tunnel type anchorage structure for cable crane and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855168A (en) * | 2021-01-05 | 2021-05-28 | 广西壮族自治区公路发展中心 | Construction method of suspension cable bridge type tunnel spanning over super-huge karst cave |
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2020
- 2020-06-08 CN CN202010513200.2A patent/CN111809521A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855168A (en) * | 2021-01-05 | 2021-05-28 | 广西壮族自治区公路发展中心 | Construction method of suspension cable bridge type tunnel spanning over super-huge karst cave |
| CN112855168B (en) * | 2021-01-05 | 2023-06-13 | 广西壮族自治区公路发展中心 | Suspension cable bridge type tunnel construction method for crossing oversized karst cave |
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