CN213804894U - Floating bridge anchoring device - Google Patents
Floating bridge anchoring device Download PDFInfo
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- CN213804894U CN213804894U CN202022380977.4U CN202022380977U CN213804894U CN 213804894 U CN213804894 U CN 213804894U CN 202022380977 U CN202022380977 U CN 202022380977U CN 213804894 U CN213804894 U CN 213804894U
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- gravity type
- type anchor
- anchor beam
- floating bridge
- bridge
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Abstract
The utility model discloses a floating bridge anchor, it sets up in the subaerial gravity type anchor beam just of the horizontal both sides of floating bridge bottom including the symmetry gravity type anchor beam pass through the steel cable with the corresponding side fixed connection of floating bridge, every the gravity type anchor beam all follows the longitudinal extension of floating bridge, the top surface of gravity type anchor beam be fixed with a plurality of on vertical interval be used for with the fixed part that the steel cable is connected, be provided with the anti-sliding tooth nail that is used for preventing to slide on the bottom surface of gravity type anchor beam. Compared with the prior art, use the utility model provides a pontoon bridge anchor when the pontoon bridge is built on the surface of water, the security of increase pontoon bridge at the surface of water, furthest's assurance personnel and mechanical safety that can be very big degree.
Description
Technical Field
The utility model belongs to bridge construction field, concretely relates to floating bridge anchor.
Background
At present, when a floating bridge is built on the water surface, in order to fix the floating bridge and prevent the floating bridge from floating on the water surface due to water flow force, wind power, wave force, eccentric load and the like, steel cables or ropes are connected with anchors on banks on two sides. The above connection method can only ensure that the pontoon does not float around on the water surface, but the small-amplitude shaking like side-to-side swinging is difficult to avoid, and is still very unsafe for personnel and machinery passing over the pontoon.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a floating bridge anchor aims at overcoming among the prior art conventional anchor and rocks and the not good not enough of security that leads to not good, the easy production left and right rocking to the fixed effect of floating bridge.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a floating bridge anchor, its includes that the symmetry sets up in the subaerial gravity type anchor beam of the horizontal both sides of floating bridge just the gravity type anchor beam pass through the steel cable with the corresponding side fixed connection of floating bridge, every the gravity type anchor beam all follows the longitudinal extension of floating bridge, the top surface of gravity type anchor beam be fixed with on vertical interval a plurality of be used for with the fixed part that the steel cable is connected, be provided with the anti-sliding teeth nail that is used for preventing to slide on the bottom surface of gravity type anchor beam.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, two steel cables are led out from each fixed point on each side of the floating bridge, and one of the two steel cables is obliquely connected to the front side of the lower part, and the other one of the two steel cables is obliquely connected to the rear side of the lower part and is fixedly connected with two adjacent fixed portions on the same gravity type anchor beam.
The floating bridge has the beneficial effect that the floating bridge can be fixed by the steel cable and the gravity anchor beam below the steel cable in the longitudinal direction.
Furthermore, the gravity type anchor beam is a rectangular prestressed concrete hollow beam, the prestressed concrete hollow beam is provided with a plurality of cylindrical holes longitudinally penetrating through the front end face and the rear end face of the prestressed concrete hollow beam, and the fixing part is a hanging ring or a hanging hook pre-embedded on the top surface of the prestressed concrete hollow beam.
The beneficial effect who adopts above-mentioned further scheme is that, prestressed concrete hollow beam tensile strength is good, and corrosion-resistant weather resistance is good simultaneously, can guarantee to have longer life after sinking underwater, and the cost is cheap relatively simultaneously.
Further, the anti-sliding tooth nail is a conical convex tooth structure formed by solidifying concrete on the bottom surface of the prestressed concrete hollow beam.
The gravity anchor beam has the beneficial effects that the conical convex teeth are arranged in a staggered mode or distributed in a dot matrix mode, so that the contact area between the gravity anchor beam and the underwater riverbed is larger, the ground grabbing force is better, and the gravity anchor beam can be effectively prevented from sliding under the action of tensile force.
Furthermore, the anti-sliding tooth nails are reinforcing steel bars which are pre-embedded on the bottom surface of the prestressed concrete hollow beam and distributed in a lattice manner.
The concrete has the beneficial effects that the pre-embedded steel bar columns have the same effect as the conical convex teeth formed by solidifying the concrete, and after the concrete is inserted into a riverbed, the ground grabbing force is good, so that the slippage is prevented.
Further, the length, the width and the height of the rectangular prestressed concrete hollow beam are 10m, 3m and 2m in sequence, the number of the cylindrical holes is one, the cylindrical holes penetrate through the prestressed concrete hollow beam at the center, the radius of each cylindrical hole is 0.8m, 4 fixing parts are arranged on each gravity type anchor beam, and the distance between every two adjacent fixing parts is 2.8-3.1 m.
The further scheme has the advantages of simple structure and easy prefabrication production; the prestressed concrete hollow beam with the size is large-volume concrete, and the opening of the hole with the proper size is beneficial to temperature control during maintenance and prevents cracking.
Compared with the prior art, the utility model discloses a technological effect and advantage:
the utility model provides a floating bridge anchoring device has the gravity anchor beam sinking into the underwater ground on the two lateral sides (left and right sides) of the floating bridge and the steel cable connecting the floating bridge and the gravity anchor beam, the steel cable tightens the floating bridge from the left and right sides to the upper part, then the floating bridge is effectively limited in the left and right direction, the floating bridge is not easy to shake left and right when pedestrians and mechanical equipment advance on the floating bridge, the safety is good; when each fixed point on each side of the floating bridge is fixed, one steel cable extends downwards from the front to the back of each fixed point and is connected with a gravity type anchor beam below the fixed point, so that the left and right directions (transverse direction) can be limited, the up and down directions and the front and back directions (longitudinal direction) can be effectively limited, namely, the three directions can be limited, and the floating bridge has the advantages of stability and good safety.
Drawings
Fig. 1 is a schematic view of a floating bridge anchoring device provided by the present invention;
FIG. 2 is a front view of the pontoon anchor device shown in FIG. 1;
fig. 3 is a schematic view when one cylindrical bore hole is provided for a gravity anchor beam;
fig. 4 is a left side view of the pontoon anchor device shown in fig. 3.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a gravity anchor beam; 2. a wire rope; 3. a fixed part; 4. anti-skid toothed nails; 5. a cylindrical hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, if terms indicating orientation such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 4, the utility model provides a floating bridge anchoring device, it sets up in the subaerial gravity type anchor beam 1 of the horizontal both sides of floating bridge just including the symmetry gravity type anchor beam 1 pass through steel cable 2 with the corresponding side fixed connection of floating bridge, every gravity type anchor beam 1 all follows the longitudinal extension of floating bridge, the top surface of gravity type anchor beam 1 be fixed with a plurality of on vertical interval be used for with fixed part 3 that steel cable 2 is connected, be provided with the anti-sliding teeth nail 4 that is used for preventing to slide on the bottom surface of gravity type anchor beam 1.
The number of the steel cables and the number of the gravity anchor beams required by the pontoon are determined according to actual conditions in the field. Generally speaking, when a gravity anchor beam is poured, external loads to be borne by a floating bridge and external forces such as buoyancy, wind power, water flow force and eccentric load which may be borne by the floating bridge are estimated, then resultant force of the buoyancy and the external forces is calculated, the number of steel cables is determined according to the magnitude of the resultant force, and the magnitude of stress borne by each steel cable is calculated. And then according to the number of the steel cables and the stress on each steel cable, reasonably determining the number and weight of the gravity anchor beams.
In a preferred embodiment of the present invention, as shown in fig. 1 and 4, two of the steel cables 2 are led out from each of the fixing points on each side of the pontoon, and two of the steel cables 2 are fixedly connected to one of the two adjacent fixing portions 3 on the same gravity anchor beam 1, which are inclined downward to the front side and the other inclined downward to the rear side.
It will be appreciated that each cable is inclined and tensioned, the angle of the tensioned cable to the horizontal preferably being in the range 30-60 degrees.
In an embodiment of the present invention, the gravity type anchor beam 1 is a rectangular prestressed concrete hollow beam having a plurality of cylindrical holes 5 longitudinally penetrating through front and rear end surfaces thereof, and the fixing portion 3 is a hanging ring or a hanging hook pre-embedded on a top surface of the prestressed concrete hollow beam.
It should be noted that the gravity anchor beam should be made of a water-resistant and weather-resistant material with sufficient strength, so that the strength of the anchor beam is not significantly reduced in a normal use period, and cracks are not generated in the use process, thereby ensuring the safety of the floating bridge.
In an embodiment of the present invention, the anti-sliding nails 4 are tapered protruding teeth structures formed by concrete solidification on the bottom surface of the prestressed concrete hollow beam. The concrete of the conical convex tooth structure can be internally provided with reinforcing steel bars for reinforcement.
In another embodiment of the present invention, the anti-sliding nails 4 are pre-embedded in the reinforced columns distributed in a lattice manner on the bottom surface of the prestressed concrete hollow beam.
In a preferred embodiment of the present invention, when anchoring the floating bridge, the buoyancy 7048.2KN, the external load 2050KN, the dead weight 1032KN, which the floating bridge receives are estimated, and then the resultant force of the buoyancy and each external force is calculated to be 3966.2KN, and the number of the steel cables is determined according to the magnitude of the resultant force. From the combined comparison, it was determined that 12 groups of cables were required, and then each cable was subjected to a stress of 165.3KN according to the calculation. According to the stress to be borne by the steel cable, the steel core steel cable with the nominal diameter of 30mm and the nominal tensile strength of 1870Mpa is selected as the material, and the minimum breaking tension is 604 KN. And then, according to the number of the steel cables and the stress borne by each steel cable, reasonably determining the number and specification size of the gravity anchor beams. In general, there are 1 gravity anchor beam per 6 cables, and 4 total gravity anchor beams are required. And then determining the specification and size of the gravity type anchor beam, wherein the gravity borne by the gravity type anchor beam per se needs to be larger than the pulling force applied to the gravity type anchor beam by a steel cable according to requirements, so that the gravity type anchor beam is a cuboid with the length of 10m, the width of 3m and the height of 2m, and meanwhile, 1 cylindrical hole with the radius of 0.8 meter and the length of 10 meters is arranged in the middle of the cuboid to ensure the temperature control of the large-volume concrete, and the weight of the gravity type anchor beam is about 103.7 tons.
When the floating bridge is built, firstly, according to the design, a gravity type anchor beam is prefabricated in a factory, then the prefabricated gravity type anchor beam is transported to the site, then one end of a steel cable is fixed on a hanging ring 3 of the gravity type anchor beam, then the gravity type anchor beam is dragged to a preset position on the water surface by using a floating pontoon, the floating bridge is stably placed in the water, after the floating bridge is sunk into the water bottom, the floating bridge is supported to a bridge position, under the assistance of a winch, a diver sequentially hangs the other end of the steel cable on the floating bridge, so that the floating bridge is restrained from 3 directions, and the floating bridge is prevented from floating or swinging left and right under the action of various external forces on the water surface.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. The utility model provides a pontoon bridge anchor, its characterized in that sets up in subaerial gravity type anchor beam (1) of the horizontal both sides of pontoon bridge just including the symmetry gravity type anchor beam (1) through steel cable (2) with the corresponding side fixed connection of pontoon bridge, every gravity type anchor beam (1) all follows the longitudinal extension of pontoon bridge, the top surface of gravity type anchor beam (1) be fixed with a plurality of on vertical interval be used for with fixed part (3) that steel cable (2) are connected, be provided with on the bottom surface of gravity type anchor beam (1) and be used for preventing anti-sliding tooth nail (4) that slide.
2. A pontoon anchoring device according to claim 1, wherein two of said wire ropes (2) lead from each fixing point on each side of the pontoon, and wherein one of said wire ropes (2) is fixedly connected to one of two adjacent fixing portions (3) on the same gravity anchor beam (1) at a front side and the other to a rear side.
3. The floating bridge anchoring device of claim 1, wherein the gravity type anchor beam (1) is a rectangular parallelepiped prestressed concrete hollow beam having a plurality of cylindrical holes (5) longitudinally penetrating through the front and rear end surfaces thereof, and the fixing portion (3) is a hanging ring or a hanging hook pre-embedded on the top surface of the prestressed concrete hollow beam.
4. A floating bridge anchoring device according to claim 3, characterized in that the anti-skid spikes (4) are tapered protruding teeth structures formed by concrete setting on the bottom surface of the prestressed concrete hollow beam.
5. The floating bridge anchoring device of claim 3, wherein the anti-skid spikes (4) are steel bar columns which are pre-embedded on the bottom surface of the prestressed concrete hollow beam and distributed in a lattice manner.
6. A floating bridge anchoring device according to any one of claims 3 to 5, wherein the length, width and height of the rectangular parallelepiped prestressed concrete hollow beam are 10m, 3m and 2m in sequence, the number of the cylindrical holes (5) is one, the cylindrical holes penetrate through the prestressed concrete hollow beam at the center, the radius of the cylindrical holes (5) is 0.8m, 4 fixing parts (3) are arranged on each gravity type anchor beam (1), and the distance between two adjacent fixing parts (3) is 2.8-3.1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380977.4U CN213804894U (en) | 2020-10-23 | 2020-10-23 | Floating bridge anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380977.4U CN213804894U (en) | 2020-10-23 | 2020-10-23 | Floating bridge anchoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213804894U true CN213804894U (en) | 2021-07-27 |
Family
ID=76961105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022380977.4U Active CN213804894U (en) | 2020-10-23 | 2020-10-23 | Floating bridge anchoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213804894U (en) |
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2020
- 2020-10-23 CN CN202022380977.4U patent/CN213804894U/en active Active
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