CN210315591U - Two-way isometric prefabricated lattice girder of non- - Google Patents
Two-way isometric prefabricated lattice girder of non- Download PDFInfo
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- CN210315591U CN210315591U CN201920477521.4U CN201920477521U CN210315591U CN 210315591 U CN210315591 U CN 210315591U CN 201920477521 U CN201920477521 U CN 201920477521U CN 210315591 U CN210315591 U CN 210315591U
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Abstract
The utility model provides a two-way isometric prefabricated lattice roof beam of non-. The prefabricated lattice beam is formed by a plurality of prefabricated cross beam body units which are arranged in a matrix manner, tiled and lapped; the prefabricated cross beam body unit is formed by intersecting a cross beam and a longitudinal beam; an anchor head part is arranged at the intersection of the cross beam and the longitudinal beam; the corner of the cross joint at the joint of the cross beam and the longitudinal beam is arc-shaped; the anchor head comprises a groove and a base plate arranged at the groove; and the groove and the base plate are both provided with anchor holes for the penetration of anchor rods or anchor cables. The utility model has the characteristics of simplify construction steps, shorten construction cycle, reduce the construction risk, realize standardized management production, guarantee product quality, economical and practical environmental protection. The technical scheme of the utility model can replace existing cast-in-place formula stock (cable) lattice beam to carry out the slope reinforcement, has outstanding advantage in the emergent reinforcement of speedily carrying out rescue work of side slope, also suits to carry out the construction of slope reinforcement fast at the reconstruction extension highway.
Description
Technical Field
The application relates to the technical field of slope reinforcement and ecological restoration engineering, in particular to a bidirectional unequal-length prefabricated lattice beam.
Background
China is a multi-mountain country, plateaus, hills and mountains account for about 70% of land area in China, and a large amount of landslides, collapses and debris flow disasters occur every year. Furthermore, when a ground is leveled in civil engineering, the surrounding mountain is required to be cut when the ground is frequently dug largely, set off a slope and the like, and the original balance is damaged by cutting operation. In order to ensure the safety of the side slope and the environment thereof, support, reinforcement and protection measures must be taken for the side slope. The slope anchor rod (cable) lattice reinforcing technology has the obvious advantages of flexible arrangement, various lattice forms, convenient section adjustment, close adhesion with a slope surface, capability of following the slope and the like, and is a commonly used method in slope reinforcement.
In the prior art, when the anchor rod (cable) lattice beam is adopted to reinforce the side slope, the concrete lattice beam is usually constructed in a cast-in-place mode, and the concrete lattice beam has the following defects:
(1) when the cast-in-place lattice beam is manufactured, the required construction period is longer due to more processes of side slope grooving, template processing, reinforcement binding, concrete pouring, maintenance and the like and lower overall mechanization degree in the construction process;
(2) because the field pouring process is more and the influence factors are more, the quality of the cast-in-place concrete lattice beam cannot be guaranteed;
(3) the stretching of the prestressed anchor rod (cable) can be carried out only after the external anchor structure reaches the design strength, and the whole construction period is often seriously prolonged due to the maintenance of the external anchor structure;
(4) when the traditional cast-in-place reinforced concrete lattice beam meets the condition that the anchoring force of an anchor rope is large, the traditional cast-in-place reinforced concrete lattice beam is likely to be pulled apart at the midspan position to cause the rigidity of a component to be reduced, and the overall stability is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a two-way isometric prefabricated lattice girder of non-.
The technical scheme of the utility model specifically be so realized:
a prefabricated lattice beam for slope reinforcement is formed by a plurality of prefabricated cross beam body units which are arranged in a matrix manner, tiled and overlapped;
the prefabricated cross beam body unit is formed by intersecting a cross beam and a longitudinal beam; an anchor head part is arranged at the intersection of the cross beam and the longitudinal beam; the corner of the cross joint at the joint of the cross beam and the longitudinal beam is arc-shaped; the cross beam and the longitudinal beam of the prefabricated cross beam body unit are unequal in length;
the anchor head comprises a groove and a base plate arranged at the groove; and the groove and the base plate are both provided with anchor holes for the penetration of anchor rods or anchor cables.
Preferably, the longitudinal sections of the cross beams and the longitudinal beams of the prefabricated cross beam body unit are rectangular or trapezoidal.
Preferably, the concrete strength of the cross-shaped beam body unit is not less than C25; and the size of the steel bar used in the transverse beam and the longitudinal beam is not smaller than phi 12.
Preferably, the prefabricated cross-shaped beam body unit is a prestressed concrete member;
the concrete strength of the cross-shaped beam body unit is not less than C40; the size of the non-prestressed reinforcement used in the transverse beam and the longitudinal beam is not less than phi 12, and the size of the prestressed reinforcement is not less than phi 15.2.
Preferably, the length of the longitudinal beam is 2.9-5.6 m, the length of the cross beam is 2-2.9 m, and the height and width of the cross section of the cross beam and the longitudinal beam are 400-600 mm.
Preferably, the backing plate is a steel backing plate.
As can be seen from the above, compared with the prior art, the technical scheme of the utility model has following advantage at least:
1) the prefabricated lattice beam is formed by mutually splicing a plurality of prefabricated cross beam body units, the cross beam body units are simpler to manufacture, lighter to install and easy to adjust during installation;
2) the prefabricated lattice beam is a prestressed concrete lattice beam, so that the section performance of the beam can be improved, the beam can bear larger anchoring force, and the defects that a component is easy to corrode in a precipitation frequent area and the rigidity is reduced due to the fact that the component is pulled to crack at the midspan position when the traditional cast-in-place reinforced concrete lattice beam meets the condition that the anchoring force of an anchor rope is larger are overcome; the prefabricated prestressed concrete lattice beam can also reduce the thickness of the beam body or reduce stressed steel bars, and improve the material utilization rate, thereby being more economic.
3) The prefabricated lattice beam can realize standardized management and production in the factory prefabrication process, so that the prefabricated lattice beam can reach the optimal state in terms of stress and shape, and the quality of the prefabricated lattice beam is ensured.
4) The main parts of the prefabricated lattice beam are cross beam units which are manufactured in a factory in advance, and the prefabricated lattice beam is transported to a side slope site for hoisting and anchoring after the construction of a side slope anchor rod (cable) is completed. Compared with the technical scheme of in domatic cast in situ lattice roof beam among the prior art, the utility model discloses a prefabricated lattice roof beam is formed by the mutual overlap joint of a plurality of prefabricated cross beam body unit, on-the-spot only need hoist and mount can, the construction is simple and convenient high-efficient, technical requirement is low, need be in side slope fluting among the traditional method from, formwork, ligature reinforcing bar, pour, the maintenance, the drawing of patterns, processes such as detection, construction cycle has been shortened greatly, reduced because the danger that reasons such as weather lead to the slope body to slide the slope again during the construction, the risk is reduced, the cost is saved.
5) Need not be at domatic grooving when using prefabricated lattice beam to install, compare and need be in the domatic artifical grooving of side slope so that make the certain degree of depth of lattice beam embedding when pouring in situ, the utility model discloses labour saving and time saving more.
Therefore, the technical scheme of the utility model have simplify the construction procedure, shorten construction cycle, reduce the construction risk, realize standardized management production, guarantee product quality, economical and practical environmental protection's characteristics. The technical scheme of the utility model can replace existing cast-in-place formula stock (cable) lattice beam to carry out the slope reinforcement, has outstanding advantage in the emergent reinforcement of speedily carrying out rescue work of side slope, also suits to carry out the construction of slope reinforcement fast at the reconstruction extension highway.
Drawings
Fig. 1 is a first schematic structural diagram of a prefabricated lattice beam according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a prefabricated lattice beam according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a cross beam unit according to an embodiment of the present invention.
Fig. 4a is a schematic view of a cross beam unit cross section reinforcement in an embodiment of the present invention.
Fig. 4b is a schematic view of a cross beam unit cross section reinforcement in an embodiment of the present invention.
Fig. 5 is a schematic partial enlarged view of a cross beam unit a according to an embodiment of the present invention.
Fig. 6 is a longitudinal sectional view B-B of fig. 3.
Fig. 7 is a longitudinal cross-sectional view of C-C of fig. 3.
Fig. 8 is a schematic view of an anchor cup in an embodiment of the present invention.
Fig. 9 is a schematic diagram of reinforcing a side slope by using prefabricated lattice beams in an embodiment of the present invention.
Detailed Description
In order to make the technical solution and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 9, the utility model relates to a prefabricated lattice beam for slope reinforcement, which is formed by a plurality of prefabricated cross beam body units (1) which are arranged in a matrix, tiled and overlapped;
the prefabricated cross beam body unit (1) is formed by intersecting a cross beam (4) and a longitudinal beam (5); an anchor head (7) (or called an anchor cup) is arranged at the intersection of the cross beam (4) and the longitudinal beam (5); the corner (6) of the cross joint at the joint of the cross beam (4) and the longitudinal beam (5) is arc-shaped, so that the cross joint has better stress performance;
the anchor head part (7) comprises a groove (8) and a base plate (10) placed at the groove (8); all offer the anchor eye that is used for supplying stock or anchor rope to penetrate on recess (8) and backing plate (10), for example, anchor eye (9) in fig. 6 ~ 8, be convenient for when the installation be connected with stock or anchor rope (11).
In addition, preferably, in an embodiment of the present invention, as shown in fig. 1 and fig. 2, every four cross beam units are spliced to each other to form an inner octagonal hole; the cross beam of each cross beam body unit is mutually overlapped with the cross beam of the adjacent cross beam body unit, and the longitudinal beam of each cross beam body unit is mutually overlapped with the longitudinal beam of the adjacent cross beam body unit to form a plurality of 'well' -shaped arrangements; and (3) splicing a plurality of 'groined' shapes to form the prefabricated lattice beam for slope reinforcement.
Preferably, in an embodiment of the present invention, the cross beam unit has unequal length (i.e. unequal length) between the cross beam and the longitudinal beam. For example, the length of the cross beam body unit is smaller than that of the longitudinal beam, as shown in fig. 1-3.
In addition, preferably, in an embodiment of the present invention, the length of the longitudinal beam is 2.9m to 5.6m, the length of the cross beam is 2m to 2.9m, and the height and width of the cross section of the cross beam and the longitudinal beam are 400mm to 600 mm.
In addition, preferably, in an embodiment of the present invention, the longitudinal cross section (41) of the cross beam body unit is rectangular or trapezoidal. For example, as shown in fig. 6, the longitudinal height of the cross-shaped beam body unit is gradually reduced from the middle to both ends, so that the bearing capacity of the anchor head can be improved.
In addition, preferably, in an embodiment of the present invention, the strength of the concrete of the cross beam unit is not less than C25; and the size of the steel bar used in the transverse beam and the longitudinal beam is not smaller than phi 12.
Preferably, in an embodiment of the present invention, the prefabricated cross beam unit is a prestressed concrete member.
In addition, preferably, in an embodiment of the present invention, when the prefabricated cross beam unit is a prestressed concrete member, the strength of the concrete of the cross beam unit is not less than C40; the size of the non-prestressed reinforcement used in the transverse beam and the longitudinal beam is not less than phi 12, and the size of the prestressed reinforcement is not less than phi 15.2 (for example, phi 15.2 steel strand); if necessary, a backing plate can be added at the end.
Additionally, in the technical scheme of the utility model, if there is the demand such as prevent electricity, anticorrosion, prevent signal interference, can be with reinforcing bar replacement for FRP composite fiber material reinforced concrete roof beam.
Additionally, the preferred the utility model discloses an in the embodiment, prefabricated lattice girder designs for the better prestressed reinforcement roof beam of performance, be provided with prestressed reinforcement in the prefabricated lattice girder to can prevent effectively that the crack from appearing the extension, the effectual concrete that prevents when the anchor is used ftractureing, thereby leads to cross-section bending stiffness to diminish, and the reinforcing bar receives the corruption, prolongs the life cycle of lattice girder.
Additionally, the technical scheme of the utility model, above-mentioned prefabricated lattice roof beam can be prefabricated at the mill, transports on-the-spot direct mount, and consequently preparation, installation are all more convenient, but also can realize standardized management production, guarantees product quality.
In addition, preferably, in an embodiment of the present invention, the length of the prefabricated lattice beam may be 1 to 3m, and the height and width of the cross section may be 400 to 600 mm. Therefore, prefabricated lattice girders of different specifications can be manufactured and used according to the purpose.
For example, if the length of the cross beam body unit exceeds 2.5m, a prestressed prefabricated cross beam can be used, so that the occurrence and the expansion of cracks during trial use can be effectively reduced, and a remarkable protection effect is achieved.
Preferably, in an embodiment of the present invention, the backing plate is made of steel.
In addition, preferably, in the embodiment of the present invention, the anchor head groove (8) formed by the anchor cup (7) disposed in the middle of the cross beam unit is circular, the anchor cup is divided into three parts, and the lower part of the anchor cup is reserved for installation. The anchor cup is a thin steel plate, the size of the anchor cup can be adjusted according to the height of the beam, and the anchor cup is left in the beam after the beam is manufactured.
Furthermore, the technical scheme of the utility model provides an use reinforced (rfd) side slope structure of prefabricated lattice beam still provides, as shown in fig. 9, reinforced (rfd) side slope structure of prefabricated lattice beam is formed by the mutual overlap joint of a plurality of prefabricated cross beam body unit. The side slope structure is placed in parallel to a side slope (15), an anchor hole on each prefabricated cross beam body unit is aligned with a side slope anchor hole (12) formed in the side slope, and an anchor rod or an anchor cable sequentially penetrates through a groove of the prefabricated cross beam body unit and an anchor hole in a base plate and is inserted into a pore channel of the side slope anchor hole; then, pouring slurry (13) into the pore channel of the side slope anchor hole for plugging; the anchor rod or the anchor cable positioned at the upper part of the backing plate is locked by a nut (14); then the exposed parts of the groove, the anchor rod (cable) and the nut are blocked and protected. Preferably, the exposed parts of the groove, the anchor rod (cable) and the nut are filled with equal-strength concrete for plugging, or a steel cover is additionally arranged for protection, or anti-corrosion grease is smeared.
To sum up, compare with prior art, the technical scheme of the utility model has following advantage at least:
1) the prefabricated lattice beam is formed by mutually splicing a plurality of prefabricated cross beam body units, the cross beam body units are simpler to manufacture, lighter to install and easy to adjust during installation;
2) the prefabricated lattice beam is a prestressed concrete lattice beam, so that the section performance of the beam can be improved, the beam can bear larger anchoring force, and the defects that a component is easy to corrode in a precipitation frequent area and the rigidity is reduced due to the fact that the component is pulled to crack at the midspan position when the traditional cast-in-place reinforced concrete lattice beam meets the condition that the anchoring force of an anchor rope is larger are overcome; the prefabricated prestressed concrete lattice beam can also reduce the thickness of the beam body or reduce stressed steel bars, and improve the material utilization rate, thereby being more economic.
3) The prefabricated lattice beam can realize standardized management and production in the factory prefabrication process, so that the prefabricated lattice beam can reach the optimal state in terms of stress and shape, and the quality of the prefabricated lattice beam is ensured.
4) The main parts of the prefabricated lattice beam are cross beam units which are manufactured in a factory in advance, and the prefabricated lattice beam is transported to a side slope site for hoisting and anchoring after the construction of a side slope anchor rod (cable) is completed. Compared with the technical scheme of in domatic cast in situ lattice roof beam among the prior art, the utility model discloses a prefabricated lattice roof beam is formed by the mutual overlap joint of a plurality of prefabricated cross beam body unit, on-the-spot only need hoist and mount can, the construction is simple and convenient high-efficient, technical requirement is low, need be in side slope fluting among the traditional method from, formwork, ligature reinforcing bar, pour, the maintenance, the drawing of patterns, processes such as detection, construction cycle has been shortened greatly, reduced because the danger that reasons such as weather lead to the slope body to slide the slope again during the construction, the risk is reduced, the cost is saved.
5) Need not be at domatic grooving when using prefabricated lattice beam to install, compare and need be in the domatic artifical grooving of side slope so that make the certain degree of depth of lattice beam embedding when pouring in situ, the utility model discloses labour saving and time saving more.
Therefore, the technical scheme of the utility model have simplify the construction procedure, shorten construction cycle, reduce the construction risk, realize standardized management production, guarantee product quality, economical and practical environmental protection's characteristics. The technical scheme of the utility model can replace existing cast-in-place formula stock (cable) lattice beam to carry out the slope reinforcement, has outstanding advantage in the emergent reinforcement of speedily carrying out rescue work of side slope, also suits to carry out the construction of slope reinforcement fast at the reconstruction extension highway.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A bidirectional non-isometric prefabricated lattice beam is characterized in that the bidirectional non-isometric prefabricated lattice beam is formed by a plurality of prefabricated cross beam body units which are arranged in a matrix manner, tiled and overlapped;
the prefabricated cross beam body unit is formed by intersecting a cross beam and a longitudinal beam; an anchor head part is arranged at the intersection of the cross beam and the longitudinal beam; the corner of the cross joint at the joint of the cross beam and the longitudinal beam is arc-shaped; the cross beam and the longitudinal beam of the prefabricated cross beam body unit are unequal in length;
the anchor head comprises a groove and a base plate arranged at the groove; and the groove and the base plate are both provided with anchor holes for the penetration of anchor rods or anchor cables.
2. The bidirectional non-isometric prefabricated lattice beam of claim 1, wherein:
the longitudinal sections of the transverse beams and the longitudinal beams of the prefabricated cross-shaped beam body unit are rectangular or trapezoidal.
3. The bidirectional non-isometric prefabricated lattice beam of claim 1, wherein:
the concrete strength of the cross-shaped beam body unit is not less than C25; and the size of the steel bar used in the transverse beam and the longitudinal beam is not smaller than phi 12.
4. The bidirectional non-isometric prefabricated lattice beam of claim 1, wherein:
the prefabricated cross beam body unit is a prestressed concrete member;
the concrete strength of the cross-shaped beam body unit is not less than C40; the size of the non-prestressed reinforcement used in the transverse beam and the longitudinal beam is not less than phi 12, and the size of the prestressed reinforcement is not less than phi 15.2.
5. The bidirectional non-isometric prefabricated lattice beam of claim 1, wherein:
the length of the longitudinal beam is 2.9-5.6 m, the length of the cross beam is 2-2.9 m, and the height and width of the cross section of the cross beam and the longitudinal beam are 400-600 mm.
6. The bidirectional non-isometric prefabricated lattice beam of claim 1, wherein:
the backing plate is a steel backing plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089567A (en) * | 2021-04-16 | 2021-07-09 | 吉林建筑科技学院 | Fabricated concrete lattice group array coast erosion prevention structure |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089567A (en) * | 2021-04-16 | 2021-07-09 | 吉林建筑科技学院 | Fabricated concrete lattice group array coast erosion prevention structure |
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