CN211735010U - Assembled earthing corrugated steel plate-prestressed concrete combination arched bridge - Google Patents
Assembled earthing corrugated steel plate-prestressed concrete combination arched bridge Download PDFInfo
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- CN211735010U CN211735010U CN201921645187.5U CN201921645187U CN211735010U CN 211735010 U CN211735010 U CN 211735010U CN 201921645187 U CN201921645187 U CN 201921645187U CN 211735010 U CN211735010 U CN 211735010U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 205
- 239000010959 steel Substances 0.000 title claims abstract description 205
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 56
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 239000011178 precast concrete Substances 0.000 claims abstract description 17
- 239000004575 stone Substances 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 49
- 239000002131 composite material Substances 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 6
- 239000010426 asphalt Substances 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000005493 welding type Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011372 high-strength concrete Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an assembled earthing corrugated steel board-prestressed concrete combination arched bridge. The combined arch bridge consists of an arch abutment broken stone cushion layer, arch abutments, stiffening corrugated steel plate-prestressed concrete combined arch rings between the arch abutments, stiffening corrugated steel plate end walls on the two transverse sides of the combined arch rings, anchor cables, railings, the combined arch rings, compacted sand surrounded by the end walls and a bridge floor structure layer. The combined arch ring comprises a corrugated steel plate, a precast concrete plate, transverse and longitudinal joints, double rows of elongated threaded studs and prestressed steel bars at the transverse joints. The end wall comprises a corrugated steel plate and a bidirectional channel steel stiffening beam on the surface of the end wall. The end wall and the combined arch ring are connected by adopting angle steel and reinforced by a concrete lining-group nail structure at the end part of the transverse joint. The combined arch ring greatly improves the rigidity, the anti-seismic and anti-buckling capacity and the durability of the arch ring; the end wall provided with the anchor cable not only reduces the dead load, but also enhances the self rigidity and the anti-buckling capacity, and obviously reduces the stress of the combined arch ring and the joint of the combined arch ring and the end wall.
Description
Technical Field
The utility model relates to a bridge engineering and integrated configuration technical field, concretely relates to assembled earthing corrugated steel board-prestressed concrete combination arched bridge.
Background
At present, the traditional reinforced concrete or masonry structure is generally adopted in the medium and small bridges and culverts in China, and the earth-covered corrugated steel plate structure is adopted in a small number. The reinforced concrete or masonry structure has long construction period, poor foundation deformation adaptability and weak earthquake resistance, and is very easy to crack, peel, seep water, corrode reinforcing steel bars and the like in the use stage, thereby needing to consume a large amount of manpower and cost for repairing. Compared with reinforced concrete and masonry structures, the earth-covered corrugated steel plate arch bridge has the advantages of strong deformation adaptability, low construction cost and the like due to the synergistic effect of the earth-structure and the flexible corrugated steel plates, but also has the defects of weak spanning capability, weak earthquake resistance and weak buckling resistance and the like. The defects can be overcome by introducing the corrugated steel plate-concrete combined structure, but the workload of on-site concrete pouring and stud welding is large, so that the construction period is remarkably prolonged, and the construction quality is not easy to guarantee. In addition, the end walls on the two sides above the arch ring of the earthing corrugated steel plate arch bridge are generally concrete walls, and the end walls need larger section size to resist the internal force caused by soil pressure, so that the dead weight of the end walls is too large, the burden of the arch ring is increased, and the manufacturing cost is further increased. Therefore, it is necessary to provide an earth-covered corrugated steel arch bridge with large spanning capability, strong anti-seismic and anti-buckling capabilities, and rapid and simple construction.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an assembled earthing corrugated steel plate-prestressed concrete combination arched bridge to current earthing corrugated steel plate bridge leap ability not enough, shock resistance is not strong, anti buckling resistance performance is weak, on-the-spot stud welding and concrete placement work load are big, construction period is longer scheduling problem. The problems of the existing soil-covered corrugated steel plate bridge are solved by enhancing the arch ring structure, improving the end wall structure and increasing the proportion of prefabricated components.
The purpose of the utility model is realized through the following technical scheme: an assembled earthing corrugated steel plate-prestressed concrete combined arch bridge comprises an arch abutment broken stone cushion layer, an arch abutment, a stiffening corrugated steel plate-prestressed concrete combined arch ring, a stiffening corrugated steel plate end wall, anchor cables, railings, compacted sand, a broken stone filling layer and a bridge deck structure layer;
the arch abutment broken stone cushion layer is provided with arch abutments, a stiffening corrugated steel plate-prestressed concrete combined arch ring is fixed between the two arch abutments, stiffening corrugated steel plate end walls are arranged at the two transverse sides of the stiffening corrugated steel plate-prestressed concrete combined arch ring, the stiffening corrugated steel plate end walls at the two sides are connected through anchor cables, compacted sand is filled in a space surrounded by the stiffening corrugated steel plate-prestressed concrete combined arch ring and the stiffening corrugated steel plate end walls in a layered mode, a broken stone filling layer and a bridge deck structural layer are sequentially laid on the compacted sand to form an arch bridge structure, and a railing is arranged at the top of the arch bridge structure;
the stiffening corrugated steel plate-prestressed concrete combined arch ring and the stiffening corrugated steel plate end wall are formed by mutually corresponding wave crests, wave troughs and wave troughs of two layers of corrugated steel plates and fixedly connecting the wave crests and the wave troughs;
a plurality of precast concrete plates are arranged on the upper surface of the corrugated steel plate on the upper side of the stiffening corrugated steel plate-prestressed concrete combined arch ring, and a transverse joint and a longitudinal joint are formed; arranging two rows of lengthened threaded studs at the joints of the two corrugated steel plates of the transverse joint and the longitudinal joint, and installing and tensioning prestressed steel bars at the transverse joint;
the stiffening corrugated steel plate end wall and the stiffening corrugated steel plate-prestressed concrete combined arch ring are respectively provided with a plurality of screw holes at the joint of the two layers of corrugated steel plates in the connecting area, and bolts penetrate through the screw holes to fixedly connect the stiffening corrugated steel plate end wall and the stiffening corrugated steel plate-prestressed concrete combined arch ring through angle steel;
the connection area of the stiffening corrugated steel plate end wall and the stiffening corrugated steel plate-prestressed concrete combined arch ring is reinforced through a reinforcing structure arranged at the end part of the transverse joint, the reinforcing structure is provided with group nails at the joint of two layers of corrugated steel plates of the stiffening corrugated steel plate end wall, concrete is poured at the transverse joint, the longitudinal joint and the group nails, and a concrete lining is formed at the group nails of the stiffening corrugated steel plate end wall.
Furthermore, each layer of corrugated steel plate of the stiffening corrugated steel plate-prestressed concrete combined arch ring and the stiffening corrugated steel plate end wall is formed by transversely and longitudinally splicing corrugated steel plate units, and the transverse joints of the adjacent corrugated steel plate units need to be staggered by 30-50 cm.
Further, the prestressed reinforcement is composed of a plurality of steel strands.
Further, the precast concrete plate extends joint reinforcing steel bars to the circumferential joint.
Further, the width of the transverse joint and the longitudinal joint is 0.4-0.6m, and the thickness of the transverse joint and the longitudinal joint is the same as that of the precast concrete slab.
And furthermore, channel steel stiffening beams are installed on the outer surface of the stiffened corrugated steel plate end wall in the longitudinal direction and the vertical direction.
Furthermore, the anchor cable is anchored at the intersection of the channel steel stiffening beams corresponding to the stiffening corrugated steel plate end walls on the two sides.
Further, the bridge deck structure layer consists of a subbase layer, a base layer and an asphalt surface layer; the layering thickness of the compacted sandy soil is 0.5-0.6 m.
Furthermore, the elongated threaded stud and the group nail have the same structure and are composed of a screw, an upper nut and a lower nut; clamping the two layers of corrugated steel plates through an upper nut and a lower nut; wherein, the height of the screw rod should exceed the wave height of the corrugated steel plate by at least 10mm, and the diameter should be not less than 12 mm.
The utility model discloses beneficial effect as follows:
1. the stiffening corrugated steel plate-prestressed concrete combined arch ring can greatly enhance the rigidity, the earthquake resistance and the buckling resistance of the structure, and the corrugated steel plate on the upper side of the combined arch ring provides a permanent template for the installation of precast concrete slabs and the pouring of joint concrete. Meanwhile, the concrete on the top of the upper corrugated steel plate improves the durability and the fire resistance of the arch ring, effectively relieves the corrosion of the steel plate and further reduces the reinforcing and maintaining cost of the arch ring during operation.
2. The stiffened corrugated steel plate end wall replaces the traditional concrete end wall, the structure dead load is reduced, the deformation and the stress of the combined arch ring are further reduced, and the stiffened corrugated steel plate end wall is convenient to install, low in manufacturing cost and favorable for environmental protection. The two-way channel steel stiffening beam greatly enhances the rigidity and the anti-buckling capacity of the stiffening corrugated steel plate end wall.
3. The stiffened corrugated steel plate-prestressed concrete combined arch ring and the stiffened corrugated steel plate end wall are connected by bolts penetrating through screw holes through angle steel and are reinforced through a concrete lining-group nail structure arranged at the end part of the transverse joint, so that the connection rigidity of the combined arch ring and the end wall can be further enhanced, and the cooperative stress of the combined arch ring and the end wall is ensured.
4. The prestressed reinforcement is tensioned in the combined arch ring, and the characteristic that the axial rigidity of the corrugated steel plate is small is utilized, so that the prestress applying efficiency of the concrete is greatly improved, the compressive stress storage of the concrete is increased, and the risk of cracking of the concrete is reduced.
5. The anchor cable changes the original structure system that the end walls on the two sides bear the earth filling pressure into the structure system that the end walls on the two sides and the earth filling bear the force together, greatly improves the rigidity, the anti-buckling capacity and the stability of the stiffening corrugated steel plate end wall, and remarkably relieves the stress concentration phenomenon at the joint of the end wall and the combined arch ring.
6. The lengthened screw bolt nail can be used for connecting the double-layer corrugated steel plates of the combined arch ring and the end wall and can also be used as a shear connector between concrete and the corrugated steel plates. The elongated and threaded surface of the peg further enhances the ability of the peg to cooperate with the concrete. Compared with a welding type stud, the lengthened threaded stud is safer and more convenient to install.
7. The utility model provides high prefabricated component proportion, the work load such as form setting demolishs, reinforcement, concrete placement maintenance is few, has avoided stud weldment work, reduction of erection time by a wide margin, and then alleviates delay and the influence to the traffic. Furthermore, the utility model discloses a prefabricated component all can be in the standardized mass production of mill, can the proof mass, save the cost and conveniently transport.
Drawings
Fig. 1 is a perspective view of the combined arch bridge of the present invention;
fig. 2 is an elevation view of the composite arch bridge of the present invention;
FIG. 3 is a cross section I-I diagram of the composite arch bridge of the present invention;
FIG. 4 is a cross-sectional view of a stiffened corrugated steel plate-prestressed concrete composite arch ring;
FIG. 5 is a detail view of a stiffened corrugated steel plate-prestressed concrete combined arch ring;
FIG. 6a is a reinforced structural view of the connection area of the stiffened corrugated steel plate end wall and the combined arch ring;
FIG. 6b is an enlarged view of the reinforcement structure of FIG. 6 a;
FIG. 7a is a view showing the connection of the stiffened corrugated steel plate end wall and the angle steel of the combined arch ring;
FIG. 7b is an enlarged view of the angle connection in FIG. 7 a;
FIG. 8 is a diagram of the distribution and construction of backfill soil layers of the present invention;
FIG. 9 is a detail view of an elongated threaded peg;
in the figure, 1-excavation outline line, 2-arch abutment broken stone cushion layer, 3-arch abutment, 4-stiffening corrugated steel plate-prestressed concrete combined arch ring, 4-1-upper side corrugated steel plate, 4-2-lower side corrugated steel plate, 5-stiffening corrugated steel plate end wall, 5-1-outer side corrugated steel plate, 5-2-inner side corrugated steel plate, 6-channel steel stiffening beam, 7-anchor cable, 8-rail, 9-compacted sand, 10-broken stone filling layer, 11-underlayer, 12-base layer, 13-asphalt surface layer, 14-elongated screw bolt, 14-1-screw rod, 14-2-upper nut, 14-3-lower nut, 15-prestressed reinforcement, 16-precast concrete slab, 17-transverse joint, 18-longitudinal joint, 19-concrete lining, 20-group nail, 21-angle steel and 22-bolt.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a pair of assembled earthing corrugated steel plate-prestressed concrete combination arched bridge, including hunch seat rubble bed course 2, hunch seat 3, the corrugated steel plate of putting more energy into-prestressed concrete combination hunch-up 4, the corrugated steel plate headwall of putting more energy into 5, anchor rope 7, railing 8, compaction sand 9, rubble filling layer 10 and bridge floor structural layer. Excavating a foundation pit at an arch bridge site to form an excavation contour line 1, leveling and tamping a foundation on the bottom surface of the foundation pit, uniformly paving an arch base broken stone cushion layer 2, arranging arch bases 3 on the arch base broken stone cushion layer 2, fixing stiffening corrugated steel plate-prestressed concrete combined arch ring 4 between the two arch bases 3, installing stiffening corrugated steel plate end walls 5 at the two transverse sides of the stiffening corrugated steel plate-prestressed concrete combined arch ring 4, connecting the stiffening corrugated steel plate end walls 5 at the two sides through anchor cables 7, filling compacted sand 9 in a space surrounded by the stiffening corrugated steel plate-prestressed concrete combined arch ring 4 and the stiffening corrugated steel plate end walls 5 in layers, sequentially paving a broken stone filling layer 10 on the compacted sand 9 and a bridge deck structure layer to form an arch bridge structure, and installing a railing 8 at the top of the arch bridge structure.
The arch support 3 is formed by splicing precast concrete arch support sections, so that the field construction procedures of template installation and dismantling, reinforcement, concrete pouring and maintenance and the like are avoided, the construction quality can be ensured, and the construction period can be shortened.
As shown in fig. 1 and 2, the stiffening corrugated steel plate end wall 5 is formed by fixedly connecting the wave crests, wave troughs and wave troughs of the outer corrugated steel plate 5-1 and the inner corrugated steel plate 5-2, which correspond to each other. And channel steel stiffening beams 6 are arranged on the outer surface of the stiffened corrugated steel plate end wall 5 in the longitudinal direction and the vertical direction. Compared with the traditional concrete end wall, the stiffening corrugated steel plate end wall 5 reduces the structure dead load, further reduces the deformation and stress of the arch ring, and has the advantages of convenient installation, low manufacturing cost and favorable environmental protection. The channel steel stiffening beam 6 obviously enhances the rigidity and the anti-buckling capacity of the stiffening corrugated steel plate end wall 5.
The outer corrugated steel plate 5-1 and the inner corrugated steel plate 5-2 are formed by splicing corrugated steel plate units transversely and longitudinally, and the transverse seams of adjacent corrugated steel plate units need to be staggered by 30-50 cm.
The anchor cable 7 is anchored at the intersection of the channel steel stiffening beams 6 corresponding to the stiffening corrugated steel plate end walls 5 at the two sides and comprises a corrugated steel pipe, prestressed steel strands, internally filled concrete, fixed steel bars and positioning steel plates; wherein, the standard value of the tensile strength of the prestressed steel strand used by the anchor cable 7 is not less than 1860 MPa; the number, distribution and tension of the anchor cables 7 are determined according to factors such as automobile load, filling type and height. The anchor cable 7 changes the original structural system that the stiffening corrugated steel plate end walls 5 on the two sides bear the pressure of the filling soil respectively into the structural system that the stiffening corrugated steel plate end walls 5 on the two sides and the filling soil bear the force jointly, thereby greatly improving the rigidity, the anti-buckling capacity and the stability of the stiffening corrugated steel plate end walls 5, and remarkably relieving the stress concentration phenomenon at the joints of the stiffening corrugated steel plate end walls 5 and the stiffening corrugated steel plate-prestressed concrete combined arch rings 4.
As shown in fig. 4 and 5, the stiffening corrugated steel plate-prestressed concrete combined arch ring 4 is formed by fixedly connecting the wave crests, wave troughs and wave troughs of the upper corrugated steel plate 4-1 and the lower corrugated steel plate 4-2, which correspond to each other. A plurality of precast concrete plates 16 are arranged on the upper surface of the upper corrugated steel plate 4-1, and a transverse joint 17 and a longitudinal joint 18 are formed; two rows of elongated threaded studs 14 are arranged at the joints of the two corrugated steel plates of the transverse joint 17 and the longitudinal joint 18, and prestressed reinforcements 15 at the transverse joint 17 are installed and tensioned, so that the stiffened corrugated steel plate-prestressed concrete combined arch ring 4 is finally formed. The formed stiffening corrugated steel plate-prestressed concrete combined arch ring 4 can greatly enhance the structural rigidity, the earthquake resistance and the buckling resistance, and the upper corrugated steel plate 4-1 can provide a template for concrete pouring of precast concrete plates 16, transverse joints 17 and longitudinal joints 18. Meanwhile, the concrete on the top of the upper corrugated steel plate 4-1 improves the durability and the fire resistance of the arch ring, effectively relieves the corrosion of the steel plate, and further reduces the reinforcing and maintaining cost of the arch ring during operation.
The upper corrugated steel plate 4-1 and the lower corrugated steel plate 4-2 are formed by splicing corrugated steel plate units in the transverse and longitudinal directions, and the transverse seams of adjacent corrugated steel plate units need to be staggered by 30-50 cm.
The prestressed reinforcement 15 is composed of a plurality of steel strands, and prestress is applied to the concrete by using a pretensioning method; wherein, the standard value of the tensile strength of the prestressed reinforcement 15 is not less than 1860 MPa. By utilizing the lower axial rigidity of the corrugated steel plate, the applied prestress can be mostly transferred to the concrete, so that the prestress efficiency and the concrete compressive stress reserve are improved, and the risk of concrete cracking is reduced.
The precast concrete slab 16 extends joint steel bars to the circumferential joint, and the size of the precast concrete slab 16 is determined according to the factors of the structure span, the width, the stud height, the equipment lifting capacity and the like. The precast concrete plate 16 is convenient for factory standardized mass production, can reduce the workload of concrete cast-in-place, and greatly quickens the construction progress.
The width of the transverse joints 17 and the longitudinal joints 18 is 0.4-0.6m, and the thickness is the same as that of the precast concrete slab 16.
The precast concrete plates 16, the transverse joints 17 and the longitudinal joints 18 are all made of light high-strength concrete.
As shown in fig. 6a, 6b, 7a and 7b, the stiffened corrugated steel plate end wall 5 and the stiffened corrugated steel plate-prestressed concrete composite arch ring 4 are provided with a plurality of screw holes at the joint of the two layers of corrugated steel plates in the joint area, and the stiffened corrugated steel plate end wall 5 and the stiffened corrugated steel plate-prestressed concrete composite arch ring 4 are fixedly connected by bolts 22 penetrating through the screw holes through angle steel 21; the connection area of the stiffening corrugated steel plate end wall 5 and the stiffening corrugated steel plate-prestressed concrete combined arch ring 4 is reinforced by a reinforcing structure arranged at the end part of the transverse joint 17, the reinforcing structure is provided with a group nail 20 at the joint of two layers of corrugated steel plates of the stiffening corrugated steel plate end wall 5, concrete is poured at the transverse joint 17, the longitudinal joint 18 and the group nail 20, a concrete lining 19 is formed at the group nail 20 of the stiffening corrugated steel plate end wall 5, the connection rigidity of the stiffening corrugated steel plate-prestressed concrete combined arch ring 4 and the stiffening corrugated steel plate end wall 5 can be further enhanced, and the synergistic stress of the stiffening corrugated steel plate end wall and the stiffening corrugated steel plate end wall is ensured.
The concrete lining 19 is made of light high-strength concrete; the individual pegs in the cluster 20 are identical in structure to the elongated threaded pegs 14.
As shown in fig. 8, the deck structure layer is composed of a sub-base layer 11, a base layer 12 and an asphalt surface layer 13; the subbase layer 11, the base layer 12 and the asphalt surface layer 13 are determined according to the road grade and the automobile load of the combined arch bridge; the layering thickness of the compacted sand 9 is 0.5-0.6m, the compaction degree of the compacted sand 9 near the stiffening corrugated steel plate-prestressed concrete combined arch ring 4 is 0.92-0.95, and the compaction degree of other areas is 0.96-0.98.
As shown in fig. 9, the elongated screw peg 14 is composed of a screw 14-1, an upper nut 14-2 and a lower nut 14-3; two layers of corrugated steel plates are clamped through an upper nut 14-2 and a lower nut 14-3; wherein, the height of the screw 14-1 should exceed the wave height of the corrugated steel plate by at least 10mm, and the diameter should be not less than 12 mm. The elongated screw stud 14 can be used for connecting the stiffening corrugated steel plate-prestressed concrete combined arch ring 4 and the double-layer corrugated steel plate of the stiffening corrugated steel plate end wall 5, and can also be used as a shear connector between concrete and the corrugated steel plate. The elongated and threaded surface of the peg further enhances the ability of the peg to cooperate with the concrete. Compared with the welding type stud, the lengthened threaded stud 14 is safer and more convenient to install, the construction period is greatly shortened, and the difficulty that the welding type stud corrugated steel plate is welded in the transportation process is overcome.
The utility model provides high prefabricated component proportion, the work load such as form setting demolishs, reinforcement, concrete placement maintenance is few, has avoided stud weldment work, reduction of erection time by a wide margin, and then alleviates delay and the influence to the traffic. Furthermore, the utility model discloses a prefabricated component all can be in the standardized mass production of mill, can the proof mass, save the cost and conveniently transport.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. An assembled earthing corrugated steel plate-prestressed concrete combined arch bridge is characterized by comprising an arch abutment broken stone cushion layer (2), an arch abutment (3), a stiffening corrugated steel plate-prestressed concrete combined arch ring (4), a stiffening corrugated steel plate end wall (5), an anchor rope (7), a railing (8), compacted sand (9), a broken stone filling layer (10) and a bridge deck structure layer;
the arch support broken stone cushion layer (2) is provided with arch supports (3), stiffening corrugated steel plate-prestressed concrete combined arch rings (4) are fixed between the two arch supports (3), stiffening corrugated steel plate end walls (5) are installed on the two transverse sides of the stiffening corrugated steel plate-prestressed concrete combined arch rings (4), the stiffening corrugated steel plate end walls (5) on the two sides are connected through anchor cables (7), compacted sand (9) is filled in a space surrounded by the stiffening corrugated steel plate-prestressed concrete combined arch rings (4) and the stiffening corrugated steel plate end walls (5) in a layered mode, broken stone filling layers (10) and bridge floor structure layers are sequentially laid on the compacted sand (9) to form an arch bridge structure, and railings (8) are installed on the top of the arch bridge structure;
the stiffening corrugated steel plate-prestressed concrete combined arch ring (4) and the stiffening corrugated steel plate end wall (5) are formed by mutually corresponding wave crests, wave troughs and wave troughs of two layers of corrugated steel plates and fixedly connecting the wave crests and the wave troughs;
a plurality of precast concrete plates (16) are arranged on the upper surface of the upper corrugated steel plate (4-1) of the stiffening corrugated steel plate-prestressed concrete combined arch ring (4) to form a transverse joint (17) and a longitudinal joint (18); two rows of elongated threaded studs (14) are arranged at the joints of the two corrugated steel plates of the transverse joint (17) and the longitudinal joint (18), and prestressed reinforcements (15) at the transverse joint (17) are installed and tensioned;
the stiffening corrugated steel plate end wall (5) and the stiffening corrugated steel plate-prestressed concrete combined arch ring (4) are respectively provided with a plurality of screw holes at the joint of the two layers of corrugated steel plates in the connecting area, and bolts (22) penetrate through the screw holes to fixedly connect the stiffening corrugated steel plate end wall (5) and the stiffening corrugated steel plate-prestressed concrete combined arch ring (4) through angle steel (21);
the connection area of the stiffening corrugated steel plate end wall (5) and the stiffening corrugated steel plate-prestressed concrete combined arch ring (4) is reinforced through a reinforcing structure arranged at the end part of the transverse joint (17), the reinforcing structure is provided with a group nail (20) at the joint of two layers of corrugated steel plates of the stiffening corrugated steel plate end wall (5), and concrete is poured at the transverse joint (17), the longitudinal joint (18) and the group nail (20).
2. An assembled soil-covered corrugated steel plate-prestressed concrete composite arch bridge according to claim 1, wherein each layer of corrugated steel plate of the stiffening corrugated steel plate-prestressed concrete composite arch ring (4) and the stiffening corrugated steel plate end wall (5) is formed by transversely and longitudinally splicing corrugated steel plate units, and the transverse joints of the adjacent corrugated steel plate units are staggered by 30-50 cm.
3. An assembled earthing corrugated steel plate-prestressed concrete composite arch bridge according to claim 1, characterized in that the prestressed reinforcement (15) is composed of a plurality of steel strands.
4. An assembled earthing corrugated steel plate-prestressed concrete composite arch bridge according to claim 1, characterized in that the precast concrete plate (16) has joint bars extended to the circumferential joint.
5. An assembled earthing corrugated steel plate-prestressed concrete composite arch bridge according to claim 1, characterized in that the width of the transverse joints (17) and the longitudinal joints (18) is 0.4-0.6m and the thickness is the same as that of the precast concrete slab (16).
6. An assembled earthing corrugated steel plate-prestressed concrete composite arch bridge according to claim 1, characterized in that the stiffening corrugated steel plate end wall (5) is provided with channel steel stiffening beams (6) in the longitudinal and vertical directions.
7. An assembled earthing corrugated steel plate-prestressed concrete composite arch bridge according to claim 6, characterized in that the anchor cable (7) is anchored at the intersection of the channel steel stiffening beams (6) corresponding to the two side stiffening corrugated steel plate end walls (5).
8. An assembled earth-covered corrugated steel plate-prestressed concrete composite arch bridge according to claim 1, wherein said deck structure layer is composed of a sub-base layer (11), a base layer (12) and an asphalt surface layer (13); the layering thickness of the compacted sandy soil (9) is 0.5-0.6 m.
9. The assembled earth-covered corrugated steel plate-prestressed concrete composite arch bridge of claim 1, wherein the elongated screw-bolt nails (14) and the group nails (20) have the same structure and are composed of a screw (14-1), an upper nut (14-2) and a lower nut (14-3); two layers of corrugated steel plates are clamped through an upper nut (14-2) and a lower nut (14-3); wherein, the height of the screw (14-1) should exceed the wave height of the corrugated steel plate by at least 10mm, and the diameter should be not less than 12 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645187.5U CN211735010U (en) | 2019-09-29 | 2019-09-29 | Assembled earthing corrugated steel plate-prestressed concrete combination arched bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645187.5U CN211735010U (en) | 2019-09-29 | 2019-09-29 | Assembled earthing corrugated steel plate-prestressed concrete combination arched bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211735010U true CN211735010U (en) | 2020-10-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110578287A (en) * | 2019-09-29 | 2019-12-17 | 浙江师范大学 | assembled earth covering corrugated steel plate-prestressed concrete combined arch bridge and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578287A (en) * | 2019-09-29 | 2019-12-17 | 浙江师范大学 | assembled earth covering corrugated steel plate-prestressed concrete combined arch bridge and construction method thereof |
| CN110578287B (en) * | 2019-09-29 | 2024-06-11 | 浙江师范大学 | Assembled earthing corrugated steel plate-prestressed concrete combined arch bridge and construction method thereof |
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Assignee: Jinhua Shengtai Commercial Concrete Co.,Ltd. Assignor: ZHEJIANG NORMAL University Contract record no.: X2022980008016 Denomination of utility model: A prefabricated soil covered corrugated steel plate prestressed concrete composite arch bridge Granted publication date: 20201023 License type: Common License Record date: 20220623 |
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Assignee: NINGBO BEILUN JINGUAN MOULD & PLASTIC Co.,Ltd. Assignor: ZHEJIANG NORMAL University Contract record no.: X2024980000672 Denomination of utility model: A prefabricated corrugated steel plate prestressed concrete composite arch bridge with soil cover Granted publication date: 20201023 License type: Common License Record date: 20240115 |
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