CN211522814U - High-strength corrugated steel plate arch bridge with composite structure - Google Patents
High-strength corrugated steel plate arch bridge with composite structure Download PDFInfo
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- CN211522814U CN211522814U CN201921846000.8U CN201921846000U CN211522814U CN 211522814 U CN211522814 U CN 211522814U CN 201921846000 U CN201921846000 U CN 201921846000U CN 211522814 U CN211522814 U CN 211522814U
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Abstract
The utility model provides a composite construction corrugated steel plate arch bridge of high strength, belongs to bridge facility technical field for improve corrugated steel plate arch bridge's intensity. The technical scheme is as follows: the foundation is fixed on the ground at two ends of the arch bridge, two ends of the corrugated steel plate arch ring and the concrete arch ring are respectively and fixedly connected with the foundation at two ends of the arch bridge, the concrete arch ring covers the corrugated steel plate arch ring, the concrete arch ring and the corrugated steel plate arch ring are poured to form a composite structure, a layer of reinforcing mesh along the circular arch direction of the concrete arch ring is further arranged inside the concrete arch ring, a plurality of shear connectors are arranged in the concrete arch ring and are vertically and fixedly connected with the upper surface of the corrugated steel plate arch ring, and the abutment is covered with soil. The utility model discloses an effective improvement to prior art, this kind of composite construction corrugated steel plate arch bridge have higher intensity, rigidity and stability, can satisfy the traffic demand of large-span, high load, have the lower construction degree of difficulty simultaneously, can extensively adopt in the road traffic construction.
Description
Technical Field
The utility model relates to a composite construction's deck dam belongs to bridge facility technical field.
Background
The corrugated steel plate structure is more and more widely applied to road traffic engineering, wherein the corrugated steel plate arch bridge comprises soil covering, the arch bridge has the advantage of quick construction, has better bearing capacity, and is particularly suitable for being used in road traffic with small span and low load. Along with the development of traffic engineering, the corrugated steel plate structure also gradually develops towards the direction of larger waveform and larger span, and the existing soil-covered corrugated steel plate arch bridge can generate larger deformation in the use stage under the conditions of increased span and increased load, and can not adapt to the requirements of road traffic. In addition, in the construction process, when the large-span corrugated steel arch bridge meets large equipment near the vault for operation, the structural stability is obviously reduced, and instability is easy to occur. In order to make the soil-covered corrugated steel arch bridge adapt to the requirements of large span and heavy load at present, the strength, rigidity and stability of the existing soil-covered corrugated steel plate are required to be improved comprehensively.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a composite construction corrugated steel plate arch bridge of high strength is provided, this kind of composite construction corrugated steel plate arch bridge has higher intensity, rigidity and stability, can satisfy the traffic demand of large-span, high load, has the lower construction degree of difficulty simultaneously.
The technical scheme for solving the technical problems is as follows:
the utility model provides a composite construction corrugated steel plate arched bridge of high strength, it includes the basis, corrugated steel plate arch ring, the concrete arch ring, abutment earthing, the basis is fixed on the subaerial at arched bridge both ends, corrugated steel plate arch ring and concrete arch ring's both ends respectively with the basic fixed connection at arched bridge both ends, the concrete arch ring covers on corrugated steel plate arch ring, concrete arch ring and corrugated steel plate arch ring pour and form composite construction, concrete arch ring inside still is equipped with the reinforcing bar net of one deck along concrete arch ring arch direction, there are a plurality of shear connectors and the perpendicular fixed connection of corrugated steel plate arch ring upper surface in the concrete arch ring, abutment earthing covers on concrete arch ring.
According to the high-strength corrugated steel plate arch bridge with the composite structure, the corrugated steel plate arch ring is formed by splicing a plurality of corrugated steel plate sheets through bolts, and the formed linear shape is a single-arc or multi-arc arch shape with an open section.
According to the high-strength composite-structure corrugated steel plate arch bridge, the lower end of the shear connecting piece is vertically fixed at the trough position of the corrugated steel plate arch ring, and the shear connecting piece adopts the welded or bolted shear nails.
Above-mentioned composite construction corrugated steel plate arched bridge of high strength, the reinforcing bar net in the concrete arch ring comprises many vertical and horizontal reinforcing bar, and vertical reinforcing bar is along the span direction of arched bridge, and horizontal reinforcing bar is along the width direction of arched bridge, and horizontal reinforcing bar is located vertical reinforcing bar below.
According to the high-strength corrugated steel plate arch bridge with the composite structure, the concrete arch ring is internally provided with the gap structure, the gap structure is located on the central line of the width of the concrete arch ring along the span direction of the concrete arch ring, the gap structure divides the concrete arch ring into a left part and a right part, and the left part and the right part of the concrete arch ring are connected with the two side surfaces of the gap structure in a pouring mode.
Above-mentioned composite construction corrugated steel plate arch bridge of high strength, the crack structure is by the stay bolt, the steel casing, flat steel sheet and partition panel are constituteed, the screw rod of stay bolt passes corrugated steel sheet and upwards stretches out, the steel casing cover is on the stay bolt, a plurality of stay bolts and steel casing along the length direction interval equipartition of crack structure, place the partition panel between the adjacent steel casing, two flat steel sheets of welding respectively in the outside of every steel casing, two flat steel sheet parallels are relative, the partition panel is pressed from both sides tightly to the inboard face of two flat steel sheets, the outside face of partition panel is pour with the concrete arch ring of crack structure both sides respectively and is connected, the partition panel is for having certain elastic plank, or the polyethylene foam board, or polyurethane foam board.
The utility model has the advantages that:
the utility model adopts the composite structure arch ring combining the corrugated steel plate arch ring and the concrete arch ring, so that the rigidity and the stability of the arch ring structure of the arch bridge are obviously increased, the applicability of the arch bridge under the conditions of large span and high fill is improved, the concrete arch ring covers the upper surface of the corrugated steel plate arch ring, the external environment is isolated, and the corrosion resistance of the corrugated steel plate is enhanced; the bottom of the concrete arch ring of the utility model is connected with the corrugated steel plate arch ring through the shear connector, and a layer of reinforcing mesh is arranged in the concrete arch ring near the upper surface, and the reinforcing mesh and the corrugated steel plate bear the cross-section tensile stress caused by bending moment, thereby reducing the crack development of the concrete arch ring in the using process; the utility model discloses set up the crack structure in the concrete encircles the circle, reduced the inferior internal force that the concrete arouses by the temperature.
The utility model discloses an effective improvement to prior art, this kind of composite construction corrugated steel plate arch bridge have higher intensity, rigidity and stability, can satisfy the traffic demand of large-span, high load, have the lower construction degree of difficulty simultaneously, can extensively adopt in the road traffic construction.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic cross-sectional view of corrugated steel plate and concrete;
FIG. 3 is a schematic view of an arch ring surface covering template;
FIG. 4 is a schematic view of a slot construction.
The figures are labeled as follows: the bridge pier foundation comprises a foundation 1, a corrugated steel plate arch ring 2, a concrete arch ring 3, bridge abutment earthing 4, a reinforcing mesh 5, a shear connector 6, a crack isolation structure 7, a long bolt 8, a steel sleeve 9, a flat steel plate 10, a partition plate 11 and a corrugated steel template 12.
Detailed Description
The utility model discloses constitute by basis 1, corrugated steel plate arch ring 2, concrete arch ring 3, abutment earthing 4.
Fig. 1 shows that the foundation 1 is fixed on the ground at the two ends of the arch bridge, and the foundation 1 is the foundation of the arch bridge and takes over the vertical force, the horizontal thrust force and the possible bending moment transmitted by the arch springing. Concrete enlarged foundations or pile foundations can be selected according to actual geological conditions. The top surface of the foundation is connected with the main arch ring through the embedded foundation bolts and the angle steel.
Fig. 1 shows that two ends of a corrugated steel plate arch ring 2 and a concrete arch ring 3 are respectively fixedly connected with foundations 1 at two ends of an arch bridge, the concrete arch ring 3 covers the corrugated steel plate arch ring 2, and the concrete arch ring 3 and the corrugated steel plate arch ring 2 are poured to form a composite structure. The composite structure arch ring that corrugated steel plate arch ring 2 and concrete arch ring 3 combined together for the rigidity and the stability of the arch ring structure of arch bridge are showing and are increasing, have promoted the suitability of arch bridge under the large-span, high fill condition, and concrete arch ring 3 covers the upper surface at corrugated steel plate arch ring 2, isolated external environment has strengthened corrugated steel plate's corrosion resistance.
Fig. 1 shows that the abutment casing 4 is laid on top of the concrete arch 3. The abutment earthing 4 plays the effect of transmission and diffusion load in the structure, and in the normal use stage, abutment earthing 4 and the concrete and the corrugated steel three of arch ring are out of shape in coordination, and the mutual action bears the external load jointly. And the abutment soil 4 is backfilled after the concrete arch ring 3 is poured and cured, and graded sand, fine aggregate concrete or other materials can be selected according to design requirements. And ensuring that symmetrical layered backfilling is needed in the backfilling process and compacting.
Fig. 2 shows that the corrugated steel plate arch ring 2 is formed by splicing a plurality of corrugated steel plate sheets through bolts, and the formed linear shape is a single-arc or multi-arc arch with an open section.
Fig. 2 shows that a plurality of shear connection pieces 6 are arranged in the concrete arch ring 3 and are vertically and fixedly connected with the upper surface of the corrugated steel plate arch ring 2. The lower end of the shear connector 6 is vertically fixed at the wave trough position of the corrugated steel plate arch ring 2, and the shear connector 6 adopts a welding type or bolting type shear nail. The shear connector 6 can transmit the shear force between the corrugated steel and the concrete, so that the corrugated steel and the concrete form an integral common stress.
Fig. 2 shows that the concrete arch 3 is internally provided with a reinforcing mesh 5 along the arch direction of the concrete arch 3. The reinforcing mesh 5 is composed of a plurality of longitudinal and transverse reinforcing steel bars, the longitudinal reinforcing steel bars are along the span direction of the arch bridge, the transverse reinforcing steel bars are along the width direction of the arch bridge, and the transverse reinforcing steel bars are positioned below the longitudinal reinforcing steel bars. The mesh reinforcement 5 helps the concrete structure to bear tensile stress in the cross section caused by bending moment and suppresses the development of cracks in the concrete. The diameter and the pitch of the mesh reinforcement 5 are selected as the case may be and arranged uniformly.
Fig. 2 and 3 show that the concrete arch ring 3 utilizes the corrugated steel plate arch ring 2 as a lower template and simultaneously uses a plurality of corrugated steel templates 12 as an upper template in the pouring process, and after the concrete arch ring 3 is poured, the corrugated steel templates 12 can be selectively removed or kept on the structure according to the situation.
Fig. 2 and 4 show that when the width of the arch bridge is large, a gap structure 7 can be arranged in the middle of the width of the arch bridge, and the gap structure 7 is used for relieving the temperature stress caused by the expansion caused by heat and the contraction caused by cold of the concrete. The gap structure 7 is along the span direction of the concrete arch ring 3, the gap structure 7 is positioned on the central line of the width of the concrete arch ring 3, the gap structure 7 divides the concrete arch ring 3 into a left part and a right part, and the left part and the right part of the concrete arch ring 3 are connected with two side surfaces of the gap structure 7 in a pouring mode.
If the width of the bridge deck is larger, the number of the gap structures 7 can be increased, and the number is accurate to ensure that the influence of the concrete expansion caused by heat and contraction caused by cold on the bridge deck structure is eliminated.
Fig. 2 and 4 show that the gap structure 7 is composed of a long bolt 8, a steel sleeve 9, a flat steel plate 10 and a partition plate 11. The screw rod of long bolt 8 passes the deck slab and upwards stretches out, and steel casing 9 cover is on long bolt 8, and a plurality of long bolts 8 and steel casing 9 are along the length direction interval equipartition of parting joint structure 7, place partition panel 11 between the adjacent steel casing 9, and the external diameter of steel casing 9 matches with the thickness of partition panel 11, and two flat steel sheet 10 of welding respectively in the outside of every steel casing 9, two flat steel sheet 10 are parallel relative, and two flat steel sheet 10 inboard faces press from both sides tight partition panel 12. The outer side plate surfaces of the two flat steel plates 10 and the outer side plate surfaces of the partition plates 11 are respectively connected with the concrete arch rings 3 on two sides of the gap structure 7 in a pouring mode.
The partition board 12 is a board with certain elasticity, or a polyethylene foam board, or a polyurethane foam board, and can be stretched when the concrete expands with heat and contracts with cold.
Claims (6)
1. The utility model provides a composite construction corrugated steel plate arched bridge of high strength which characterized in that: the concrete arch ring comprises a foundation (1), corrugated steel plate arch rings (2), concrete arch rings (3) and abutment earthing soil (4), wherein the foundation (1) is fixed on the ground at two ends of an arch bridge, two ends of each of the corrugated steel plate arch rings (2) and the concrete arch rings (3) are fixedly connected with the foundation (1) at two ends of the arch bridge respectively, the concrete arch rings (3) cover the corrugated steel plate arch rings (2), the concrete arch rings (3) and the corrugated steel plate arch rings (2) are poured to form a composite structure, a reinforcing mesh (5) in the circular arch direction of the concrete arch rings (3) is further arranged inside the concrete arch rings (3), a plurality of shear connectors (6) are arranged in the concrete arch rings (3) and are fixedly connected with the upper surfaces of the corrugated steel plate arch rings (2) in a vertical mode, and the abutment earthing soil (4) covers the concrete arch rings (3).
2. A high strength composite structural deck arch bridge as defined in claim 1, wherein: the corrugated steel plate arch ring (2) is formed by splicing a plurality of corrugated steel plate sheets through bolts, and the formed linear shape is a single-arc or multi-arc arch with an open section.
3. A high strength composite structural deck arch bridge as defined in claim 1, wherein: the lower end of the shear connector (6) is vertically fixed at the wave trough position of the corrugated steel plate arch ring (2), and the shear connector (6) adopts a welding type or bolting type shear nail.
4. A high strength composite structural deck arch bridge as defined in claim 1, wherein: the reinforcing mesh (5) in the concrete arch ring (3) is composed of a plurality of longitudinal and transverse reinforcing steel bars, the longitudinal reinforcing steel bars are along the span direction of the arch bridge, the transverse reinforcing steel bars are along the width direction of the arch bridge, and the transverse reinforcing steel bars are positioned below the longitudinal reinforcing steel bars.
5. A high strength composite structural deck arch bridge as defined in claim 1, wherein: the concrete arch ring is characterized in that a gap structure (7) is arranged in the concrete arch ring (3), the gap structure (7) is located on the central line of the width of the concrete arch ring (3) along the span direction of the concrete arch ring (3), the gap structure (7) divides the concrete arch ring (3) into a left part and a right part, and the left part and the right part of the concrete arch ring (3) are connected with two side faces of the gap structure (7) in a pouring mode.
6. A high strength composite structural deck arch bridge as defined in claim 5, wherein: the crack structure (7) is composed of long bolts (8), steel sleeves (9), flat steel plates (10) and partition plates (11), screws of the long bolts (8) penetrate through corrugated steel plates and extend upwards, the steel sleeves (9) are sleeved on the long bolts (8), a plurality of long bolts (8) and steel sleeves (9) are uniformly distributed at intervals along the length direction of the crack structure (7), the partition plates (11) are arranged between adjacent steel sleeves (9), the two sides of each steel sleeve (9) are respectively welded with the flat steel plates (10), the two flat steel plates (10) are parallel and opposite, the inner side surfaces of the two flat steel plates (10) clamp the partition plates (11), the outer side surfaces of the two flat steel plates (10), the outer side surfaces of the partition plates (11) are respectively connected with arch rings (3) on the two sides of the crack structure (7) in a pouring mode, the partition plates (11) are wood plates with certain elasticity, or polyethylene foam plates, or a polyurethane foam board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921846000.8U CN211522814U (en) | 2019-10-30 | 2019-10-30 | High-strength corrugated steel plate arch bridge with composite structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921846000.8U CN211522814U (en) | 2019-10-30 | 2019-10-30 | High-strength corrugated steel plate arch bridge with composite structure |
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| CN211522814U true CN211522814U (en) | 2020-09-18 |
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| CN201921846000.8U Active CN211522814U (en) | 2019-10-30 | 2019-10-30 | High-strength corrugated steel plate arch bridge with composite structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293689A (en) * | 2021-05-10 | 2021-08-24 | 南京联众工程技术有限公司 | Skew corrugated steel plate arch bridge composite structure |
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2019
- 2019-10-30 CN CN201921846000.8U patent/CN211522814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293689A (en) * | 2021-05-10 | 2021-08-24 | 南京联众工程技术有限公司 | Skew corrugated steel plate arch bridge composite structure |
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