Combined overpass

Abstract

The present application relates to a kind of combined overbridge, including first stairway, intermediate platform and second stairway, the similar side of first stairway and second stairway is overlapped on the two sides of intermediate platform;It further includes pouring section and pier column, pier column is connected with intermediate platform by pouring section, to support intermediate platform, pouring section includes groove, outer protrusion and reinforcing component, groove is fixed on the top of pier column, outer protrusion is fixed on the bottom of intermediate platform, pouring cavity is formed in groove, pouring cavity and outer protrusion are mutually inserted, reinforcing component is arranged in pouring cavity, to enhance connection after pouring UHPC concrete in pouring cavity;Wherein, first stairway, intermediate platform and second stairway are all set to UHPC concrete, and are all prefabricated parts its beneficial effect is UHPC for ultra-high performance concrete, compared with steel structure, with the characteristics of exempting from post-period painting maintenance, and no need to consider corrosion problem, and no need to pave plastic layer on stairway board, it is advantageous to the construction efficiency of combined overbridge is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of overpass construction, in particular to a combined overpass. Background Art

[0002] In existing technology, overpasses are either steel structures or conventional reinforced concrete structures. Steel structures are often manufactured in sections at the factory, transported to the site, and then welded together to form a single structure. Reinforced concrete structures are typically cast-in-place. This method requires on-site tying of rebar, erecting formwork, and pouring of concrete, resulting in a lengthy construction process.

[0003] Cast-in-place structures will have a significant impact on the environment and traffic. In order to speed up construction progress, reduce on-site environmental pollution and interference with existing traffic, during the construction of overpasses, relevant components are generally prefabricated in the factory and then transported to the site for assembly. Most of the time, steel structures are used to achieve rapid assembly. However, since steel structure overpasses require subsequent maintenance such as rust prevention and painting, the stair slabs also need to be covered with a non-slip layer such as plastic, resulting in low construction efficiency. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular overpass, which solves the technical problems in the prior art of using steel structure overpasses, such as the need for subsequent anti-rust paint maintenance and the need to lay an anti-slip layer such as plastic on the stair slabs, resulting in low construction efficiency.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, the present invention provides a combined overpass, comprising a first stairway, an intermediate platform and a second stairway, wherein adjacent sides of the first stairway and the second stairway are overlapped on both sides of the intermediate platform; further comprising a casting section and a pier, wherein the pier is connected to the intermediate platform through the casting section to support the intermediate platform; the casting section comprises a trough body, an outer protrusion and a steel bar assembly, wherein the trough body is fixed to the top of the pier, and the outer protrusion is fixed to the bottom of the intermediate platform, a casting cavity is formed in the trough body, the casting cavity and the outer protrusion are plugged into each other, and the steel bar assembly is arranged in the casting cavity to strengthen the connection after UHPC concrete is poured into the casting cavity; wherein the first stairway, the intermediate platform and the second stairway are all set to UHPC concrete and are all prefabricated parts.

[0009] In this technical solution, the combined overpass includes a first stairway, an intermediate platform, and a second stairway. The first stairway and the second stairway are arranged on both sides of the intermediate platform in an overlapping manner. Therefore, the first stairway, the second stairway and the intermediate platform can be quickly connected by a lifting device.

[0010] The middle platform is connected to the pier through the pouring section. The support of the middle platform can be achieved by vertically plugging the outer protrusion and the trough. After the pouring of concrete in the pouring cavity, the reinforcement of the steel bar assembly can realize the stable connection between the outer protrusion and the trough after the concrete is formed.

[0011] UHPC stands for ultra-high performance concrete. Compared to steel structures, it requires no post-production paint maintenance and corrosion protection. There's no need to lay a plastic layer on the stair slabs, which improves the construction efficiency of modular overpasses.

[0012] In addition, UHPC concrete has high strength and light weight, and has advantages in transportation and lifting, which enables the overpass to be assembled quickly and further improves construction efficiency.

[0013] UHPC concrete is also poured into the pouring cavity. After the UHPC concrete in the pouring cavity is formed, its integrity with the trough body and the external protrusion will be better, further improving the stability of the pouring section connecting the middle platform and the pier.

[0014] The first stairway, the middle platform and the second stairway are made of prefabricated parts, and the overpass can be built directly through on-site assembly, which also further improves the construction efficiency of the modular overpass.

[0015] Setting a trough on the top of the pier column makes better use of the stress characteristics of the pier column and is easy to match with the outer protrusion at the bottom of the intermediate platform. The intermediate platform can be supported by directly hoisting and placing it without setting up temporary supports or adopting other temporary fixing measures. This simplifies the construction process, improves construction efficiency and reduces construction costs.

[0016] Specifically, the outer protrusion can be set to a cylinder or a prism, and the shape of the trough body and the casting cavity needs to match the shape of the outer protrusion. In addition, the outer protrusion should be set in the middle position of the intermediate platform to ensure its support stability for the intermediate platform.

[0017] In one technical solution of the present invention, the steel bar assembly includes a U-shaped steel bar, a first mouth-shaped steel bar, a second mouth-shaped steel bar and a main steel bar; the U-shaped steel bar is pre-embedded in the trough body, and both ends of the U-shaped steel bar extend vertically; the first mouth-shaped steel bar and the second mouth-shaped steel bar are respectively pre-embedded laterally in the side wall of the outer protrusion and the side wall of the trough body; the main steel bar is pre-embedded in the middle platform and extends into the casting cavity.

[0018] In this technical solution, the steel bar assembly includes U-shaped steel bars, first mouth-shaped steel bars, second mouth-shaped steel bars and main steel bars. The two ends of the U-shaped steel bars extend vertically into the pouring cavity, which plays a certain hoop effect on the concrete, thereby improving the bonding strength between the concrete and the external protrusion and the trough body.

[0019] The first mouth-shaped steel bar and the second mouth-shaped steel bar are both arranged horizontally. Since both are pre-embedded in the outer protrusion or the groove body, after the first mouth-shaped steel bar and the second mouth-shaped steel bar are combined with the concrete, it is also equivalent to the outer protrusion or the groove body being combined with the concrete, thereby improving the bonding strength between the outer protrusion and the groove body and the concrete, thereby improving the connection strength of the casting section to the pier column and the intermediate platform.

[0020] The main steel bars can be set as high-strength steel bars to strengthen the strength of the concrete, increase the maximum load that the concrete can bear, and further improve the connection strength of the casting section to the pier and the intermediate platform.

[0021] Specifically, the first mouth-shaped steel bar and the second mouth-shaped steel bar can both be set to a horizontally extended form, and in addition to the pre-embedded first mouth-shaped steel bar and the second mouth-shaped steel bar, the trough body and the outer protrusion can also have a joint part. The joint part can be set as a convex point or block on the surface of the trough body and the outer protrusion to further improve the bonding strength between the trough body and the outer protrusion and the concrete.

[0022] In one technical solution of the present invention, a pouring port is provided on the middle platform, and the pouring port penetrates the middle platform and extends to the pouring cavity; the main steel bar extends from the pouring port to the pouring cavity.

[0023] In this technical solution, concrete is injected into the pouring cavity from the pouring port, and the pouring port also serves as a through-hole for the main reinforcement to enter the pouring cavity, thus realizing multiple uses of one port.

[0024] After the main reinforcement passes through the pouring mouth, there must be enough margin at the pouring mouth to allow the concrete to pass through efficiently.

[0025] Specifically, four pouring ports can be provided, and they can be provided as round holes. After the concrete pouring is completed, there is no need to seal the pouring ports.

[0026] In one technical solution of the present invention, the first mouth-shaped steel bars and the second mouth-shaped steel bars are vertically staggered.

[0027] In this technical solution, the first mouth-shaped steel bars and the second mouth-shaped steel bars are vertically staggered, so that the first mouth-shaped steel bars and the second mouth-shaped steel bars are staggered with each other along the same vertical direction inside the concrete, thereby improving the bonding ability of the concrete to the trough body and the external protrusion.

[0028] Specifically, it is required to ensure that the first mouth-shaped steel bar and the second mouth-shaped steel bar do not interfere with each other during the mutual insertion of the outer protrusion and the groove body; and after the mutual insertion of the outer protrusion and the groove body, the pier column can be controlled to rotate by an angle relative to the outer protrusion, so that the first mouth-shaped steel bar and the second mouth-shaped steel bar are staggered with each other.

[0029] In one technical solution of the present application, the two sides of the intermediate platform include first lap brackets, and one side of the first ladder and the second ladder is provided with a first lap buckle that matches the first lap bracket.

[0030] In this technical solution, the two sides of the intermediate platform are provided with first brackets; one side of the first ladder and the second ladder is provided with a first lap buckle, such as an inverted bracket, which is lapped on the first bracket. In this way, through hoisting and lapping, reliable and efficient connection of the first ladder, the second ladder and the intermediate platform can be achieved.

[0031] In one technical solution of the present application, the first ladder and the second ladder each include a ladder side beam and a ladder plate, the ladder side beam is provided as at least two, and the ladder plate is provided as a plurality, and both ends of the ladder plate are lapped on the ladder side beam.

[0032] In this technical solution, the first ladder and the second ladder each include a main beam and a ladder plate, both ends of the ladder plate are lapped on the ladder side beam, and one side of the ladder side beam extends out a first lap buckle to cooperate with the first bracket.

[0033] The first ladder and the second ladder are arranged in the form of lapping on the ladder side beam, and the assembly of the first ladder and the second ladder can also be achieved in the form of hoisting and splicing, thereby improving the construction efficiency of the combined footbridge.

[0034] In one technical solution of the present application, the ladder side beam includes a second lap bracket, and both ends of the ladder plate have a second lap buckle that matches the second lap bracket.

[0035] In this technical solution, both ends of the ladder plate are provided with a second lap buckle that cooperates with the second lap bracket on the ladder side beam. Specifically, a continuous inverted U-shaped protruding piece can be reserved on the inner side of the ladder side beam as the second lap bracket, and the second lap buckle can be arranged as an inverted U-shaped buckle.

[0036] In one technical solution of the present application, the ladder side beam is provided as a hollow structure.

[0037] In this technical solution, by arranging the ladder side beam as a hollow structure, the ladder side beam and the first ladder and the second ladder can all have a relatively low total mass, thereby facilitating the assembly work, and the hollow structure can also improve the structure of the ladder side beam and improve its strength performance.

[0038] In a technical solution of the present invention, the first stairway and the second stairway further include a locking mechanism for locking the overlapping relationship between the two ends of the stairway plate and the stairway side beams.

[0039] In this technical solution, after the stairway plate is overlapped with the stairway side beam, it is locked by a locking mechanism, thereby ensuring the stability of the stairway plate on the stairway side beam.

[0040] In one technical solution of the present invention, the locking mechanism includes a locking block, a first screw and a second screw, the locking block having a first elongated hole extending vertically and a second elongated hole extending laterally, after the first screw cooperates with the first elongated hole, the locking block has a laterally sliding allowance, and after the second screw cooperates with the second elongated hole, the locking block has a vertical sliding allowance; the locking block has adjacent transverse clamping edges and vertical clamping edges, the end of the first elongated hole close to the ladder side beam is inclined toward the transverse clamping edge, and the end of the second elongated hole close to the ladder side beam is inclined toward the vertical clamping edge, so that after the first screw and the second screw are tightened on the ladder side beam, the transverse clamping edge vertically presses the second lap buckle, and the vertical clamping edge laterally presses the second lap buckle.

[0041] In this technical solution, the locking block can be set as a triangular component, such as a right triangle, and the first elongated hole and the second elongated hole are both inclined. As the first screw is tightened on the ladder side beam, due to the inclination of the first elongated hole, the first screw will squeeze the first elongated hole, causing the locking block to slide downward. Since the second bolt has a vertical sliding allowance in the second elongated hole, the second bolt will not interfere with the sliding of the locking block, and the locking block can also achieve vertical compression of the second lap buckle; as the second screw is tightened on the ladder side beam, due to the inclination of the second elongated hole, the second screw will squeeze the second elongated hole, causing the locking block to slide left or right. Since the first bolt has a horizontal sliding allowance in the first elongated hole, the first bolt will not interfere with the sliding of the locking block, and the locking block can also achieve horizontal compression of the second lap buckle.

[0042] This locking mechanism can achieve rapid locking of the second lap buckle on the second corbel, while not requiring high matching accuracy between the second lap buckle and the second corbel, which is beneficial to further improve the construction efficiency of the modular overpass.

[0043] Specifically, the second lap buckle compressed by the horizontal compression edge and the second lap buckle compressed by the vertical compression edge are two adjacent independent components. The continuous stair slabs correspond to the continuous locking mechanism, which can realize the horizontal compression and vertical compression of all stair slabs on the stair side beams.

[0044] (3) Beneficial effects

[0045] The beneficial effects of the present invention are as follows: the combined overpass of the present invention comprises a first stairway, an intermediate platform and a second stairway, and the first stairway and the second stairway are arranged on both sides of the intermediate platform in an overlapping manner, so that the first stairway, the second stairway and the intermediate platform can be quickly connected by a lifting device;

[0046] The middle platform is connected to the pier through the pouring section. The support of the middle platform can be achieved by vertically plugging the outer protrusion and the trough. After the pouring of concrete in the pouring cavity, the reinforcement of the steel bar assembly can realize the stable connection between the outer protrusion and the trough after the concrete is formed.

[0047] UHPC stands for ultra-high performance concrete. Compared to steel structures, it requires no post-production paint maintenance and corrosion protection. There's no need to lay a plastic layer on the stair slabs, which improves the construction efficiency of modular overpasses.

[0048] In addition, UHPC concrete has high strength and light weight, and has advantages in transportation and lifting, which enables the overpass to be assembled quickly and further improves construction efficiency.

[0049] UHPC concrete is also poured into the pouring cavity. After the UHPC concrete in the pouring cavity is formed, its integrity with the trough body and the external protrusion will be better, further improving the stability of the pouring section connecting the middle platform and the pier.

[0050] The first stairway, the middle platform and the second stairway are made of prefabricated parts, and the overpass can be built directly through on-site assembly, which also further improves the construction efficiency of the modular overpass.

[0051] Setting a trough on the top of the pier column makes better use of the stress characteristics of the pier column and is easy to match with the outer protrusion at the bottom of the intermediate platform. The intermediate platform can be supported by directly hoisting and placing it without setting up temporary supports or adopting other temporary fixing measures. This simplifies the construction process, improves construction efficiency and reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a structural schematic diagram of the combined overpass of the present invention;

[0053] Figure 2 For the present invention Figure 1 Schematic diagram of the local enlarged structure at Z in the middle;

[0054] Figure 3 For an embodiment of the present invention, Figure 1 Schematic diagram of the cross-sectional structure of YY;

[0055] Figure 4 For another embodiment of the present invention, Figure 1Schematic diagram of the cross-sectional structure of YY;

[0056] Figure 5 It is a structural schematic diagram of the stairway plate of the present invention;

[0057] Figure 6 It is a structural schematic diagram of the stairway side beam, stairway plate and locking mechanism of the present invention;

[0058] Figure 7 It is a structural schematic diagram of the locking block of the present invention;

[0059] Figure 8 This is one of the structural diagrams of the locking mechanism of the present invention;

[0060] Figure 9 This is the second structural diagram of the locking mechanism of the present invention;

[0061] Figure 10 This is the third structural diagram of the locking mechanism of the invention;

[0062] Figure 11 This is the fourth structural diagram of the locking mechanism of the invention.

[0063] [Description of Reference Numerals]

[0064] 1: First stairway;

[0065] 2: Middle platform; C: First lap corbel; D: First lap buckle;

[0066] 3: Second stairway;

[0067] 101: Stairway side beam; 102: Stairway plate; E: Second lap corbel; F: Second lap buckle;

[0068] 103: locking mechanism; 1031: locking block; 1032: first screw; 1033: second screw; G: first elongated hole; H: second elongated hole; I: horizontal pressing edge; J: vertical pressing edge;

[0069] 4: pouring section; 41: trough body; A: pouring cavity; 42: external protrusion; 43: steel bar assembly; 431: U-shaped steel bar; 432: first mouth-shaped steel bar; 433: second mouth-shaped steel bar; 434: main steel bar; B: pouring port;

[0070] 5: Pier column. DETAILED DESCRIPTION

[0071] In order to better explain the present invention, so as to facilitate understanding, the following Figure 1-11 , the present invention is described in detail through specific implementation methods. Among them, the directional nouns such as "upper" and "lower" mentioned in this article are Figure 1 The orientation is referenced.

[0072] Example 1:

[0073] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 An embodiment of the present invention provides a combined overpass, comprising a first stairway 1, an intermediate platform 2 and a second stairway 3, wherein adjacent sides of the first stairway 1 and the second stairway 3 are overlapped on both sides of the intermediate platform 2; further comprising a casting section 4 and a pier 5, wherein the pier 5 is connected to the intermediate platform 2 through the casting section 4 to support the intermediate platform 2; the casting section 4 comprises a trough 41, an outer protrusion 42 and a steel bar assembly 43, wherein the trough 41 is fixed to the top of the pier 5, and the outer protrusion 42 is fixed to the bottom of the intermediate platform 2, a casting cavity A is formed in the trough 41, and the casting cavity A and the outer protrusion 42 are plugged into each other, and the steel bar assembly 43 is arranged in the casting cavity A to strengthen the connection after UHPC concrete is poured into the casting cavity A; wherein the first stairway 1, the intermediate platform 2 and the second stairway 3 are all configured as UHPC concrete and are all prefabricated parts.

[0074] In this embodiment, the combined overpass includes a first stairway 1, an intermediate platform 2, and a second stairway 3. The first stairway 1 and the second stairway 3 are arranged on both sides of the intermediate platform 2 in an overlapping manner. Therefore, the first stairway 1, the second stairway 3 and the intermediate platform 2 can be quickly connected by a lifting device.

[0075] The intermediate platform 2 is connected to the pier 5 through the pouring section 4. The support of the intermediate platform 2 can be achieved by vertically plugging the outer protrusion 42 and the trough body 41. After pouring concrete into the pouring cavity A, the outer protrusion 42 and the trough body 41 can be stably connected with each other through the reinforcement effect of the steel bar assembly 43 after the concrete is formed.

[0076] UHPC is ultra-high performance concrete. Compared with steel structures, it does not require post-painting and maintenance, and there is no need to consider anti-corrosion issues. There is no need to lay a plastic layer on the stair slab 102, which is conducive to improving the construction efficiency of the modular overpass.

[0077] In addition, UHPC concrete has high strength and light weight, and has advantages in transportation and lifting, which enables the overpass to be assembled quickly and further improves construction efficiency.

[0078] The UHPC concrete is also poured into the pouring cavity A. After the UHPC concrete in the pouring cavity A is formed, its integrity with the trough body 41 and the outer protrusion 42 will be better, further improving the stability of the pouring section 4 connecting the middle platform 2 and the pier 5.

[0079] The first stairway 1, the middle platform 2 and the second stairway 3 are made of prefabricated parts, and the overpass can be directly built by on-site assembly, which also further improves the construction efficiency of the modular overpass.

[0080] A trough 41 is set on the top of the pier 5, which makes better use of the stress characteristics of the pier 5 and is easy to match with the outer protrusion 42 at the bottom of the intermediate platform 2. The intermediate platform 2 can be supported by directly hoisting and placing it without setting up temporary supports or adopting other temporary fixing measures. This simplifies the construction process, improves construction efficiency, and reduces construction costs.

[0081] Specifically, the outer protrusion 42 can be set to a cylinder or a prism, and the shape of the trough body 41 and the casting cavity A needs to match the shape of the outer protrusion 42. In addition, the outer protrusion 42 should be set in the middle position of the intermediate platform 2 to ensure its support stability for the intermediate platform 2.

[0082] Example 2:

[0083] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0084] The steel bar assembly 43 includes a U-shaped steel bar 431, a first mouth-shaped steel bar 432, a second mouth-shaped steel bar 433 and a main steel bar 434; the U-shaped steel bar 431 is embedded in the trough body 41, and both ends of the U-shaped steel bar 431 extend vertically; the first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433 are embedded horizontally in the side walls of the outer protrusion 42 and the side walls of the trough body 41 respectively; the main steel bar 434 is embedded in the middle platform 2 and extends into the casting cavity A.

[0085] In this embodiment, the steel bar assembly 43 includes a U-shaped steel bar 431, a first mouth-shaped steel bar 432, a second mouth-shaped steel bar 433 and a main steel bar 434. The two ends of the U-shaped steel bar 431 extend vertically into the pouring cavity A, which plays a certain hoop role on the concrete, thereby improving the bonding strength between the concrete and the outer protrusion 42 and the trough body 41.

[0086] The first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433 are both arranged horizontally. Since both are pre-embedded in the outer protrusion 42 or the groove body 41, after the first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433 are combined with the concrete, it is also equivalent to the outer protrusion 42 or the groove body 41 being combined with the concrete, thereby improving the bonding strength between the outer protrusion 42 and the groove body 41 and the concrete, thereby improving the connection strength of the casting section 4 to the pier 5 and the middle platform 2.

[0087] The main steel bars 434 can be set as high-strength steel bars to strengthen the strength of the concrete, increase the maximum load that the concrete can bear, and further improve the connection strength of the casting section 4 to the pier 5 and the intermediate platform 2.

[0088] Specifically, the first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433 can both be set to a horizontally extended form, and in addition to the pre-embedded first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433, the trough body 41 and the outer protrusion 42 can also have a joint part. The joint part can be set as a convex point or a convex block on the surface of the trough body 41 and the outer protrusion 42 to further improve the bonding strength between the trough body 41 and the outer protrusion 42 and the concrete.

[0089] In this embodiment, the middle platform 2 has a pouring port B, which passes through the middle platform 2 and extends to the pouring cavity A; the main steel bar 434 extends from the pouring port B to the pouring cavity A.

[0090] In this embodiment, concrete is poured into the pouring cavity A from the pouring port B. At the same time, the pouring port B also serves as a through-port for the main reinforcement 434 to enter the pouring cavity A, thus achieving multiple uses of one port.

[0091] After the main reinforcement 434 passes through the pouring port B, there must be sufficient margin at the pouring port B to allow the concrete to pass through efficiently.

[0092] Specifically, four pouring ports B can be provided, and they can be provided as round holes. After the concrete pouring is completed, the pouring ports B do not need to be sealed.

[0093] Example 3:

[0094] Reference Figure 2 In addition to all the technical solutions of the above-mentioned embodiment 2, the embodiment of the present invention further has the following technical solutions:

[0095] The first mouth-shaped steel bars 432 and the second mouth-shaped steel bars 433 are vertically staggered.

[0096] In this embodiment, the first mouth-shaped steel bars 432 and the second mouth-shaped steel bars 433 are vertically staggered, so that the first mouth-shaped steel bars 432 and the second mouth-shaped steel bars 433 are staggered with each other along the same vertical direction inside the concrete, thereby improving the bonding ability of the concrete to the trough body 41 and the outer protrusion 42.

[0097] Specifically, it is necessary to ensure that the first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433 do not interfere with each other during the mutual insertion of the outer protrusion 42 and the groove body 41; after the outer protrusion 42 and the groove body 41 are inserted into each other, the pier column 5 can be controlled to rotate at an angle relative to the outer protrusion 42 so that the first mouth-shaped steel bar 432 and the second mouth-shaped steel bar 433 are staggered with each other.

[0098] Example 4:

[0099] Reference Figure 1 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further include the following technical solutions:

[0100] Both sides of the middle platform 2 include first overlapping corbels C, and one side of the first ladder way 1 and the second ladder way 3 are both provided with first overlapping buckles D that match the first overlapping corbels C.

[0101] In this embodiment, a first corbel is provided on both sides of the intermediate platform 2; a first overlapping buckle D is provided on one side of the first ladder 1 and the second ladder 3, such as an inverted corbel and overlapped with the first corbel. In this way, a reliable and efficient connection between the first ladder 1, the second ladder 3 and the intermediate platform 2 can be achieved through lifting and overlapping.

[0102] Example 5:

[0103] Reference Figure 1 、 Figure 5 and Figure 6 In addition to all the technical solutions of the above-mentioned embodiment 4, the embodiment of the present invention further has the following technical solutions:

[0104] The first stairway 1 and the second stairway 3 both include stairway side beams 101 and stairway plates 102 . There are at least two stairway side beams 101 and multiple stairway plates 102 . Both ends of the stairway plates 102 are overlapped with the stairway side beams 101 .

[0105] In this embodiment, the first stairway 1 and the second stairway 3 both include a main beam and a stairway plate 102. The two ends of the stairway plate 102 are arranged on the stairway side beam 101 in an overlapping manner, and a first overlapping buckle D extends from one side of the stairway side beam 101 to cooperate with the first corbel.

[0106] The first stairway 1 and the second stairway 3 are arranged on the stairway side beam 101 in an overlapping manner, and the first stairway 1 and the second stairway 3 can also be assembled by hoisting and splicing, thereby improving the construction efficiency of the combined overpass.

[0107] Example 6:

[0108] Reference Figure 1 、 Figure 5 and Figure 6 In addition to all the technical solutions of the above-mentioned embodiment 5, the embodiment of the present invention further has the following technical solutions:

[0109] The stairway edge beam 101 includes a second lap corbel E, and both ends of the stairway plate 102 have a second lap buckle F that matches the second lap corbel E.

[0110] In this embodiment, second lap buckles F that cooperate with the second lap corbel E on the ladder side beam 101 are provided at both ends of the ladder plate 102. Specifically, a continuous inverted U-shaped protrusion can be reserved on the inner side of the ladder side beam 101 as the second lap corbel E, and the second lap buckle F can be set as an inverted U-shaped fastener.

[0111] The stairway side beam 101 is configured as a hollow structure.

[0112] In this embodiment, by setting the ladder side beam 101 to a hollow structure, it can be ensured that the ladder side beam 101 and the first ladder 1 and the second ladder 3 have a lower curb weight, thereby facilitating the assembly work. At the same time, the hollow structure can also improve the structure of the ladder side beam 101 and enhance its strength performance.

[0113] Example 7:

[0114] Reference Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0115] The first stairway 1 and the second stairway 3 further include a locking mechanism 103 for locking the overlapping relationship between the two ends of the stairway plate 102 and the stairway side beam 101.

[0116] In this embodiment, after the stairway plate 102 is overlapped with the stairway side beam 101 , it is locked by the locking mechanism 103 , thereby ensuring the stability of the stairway plate 102 on the stairway side beam 101 .

[0117] Figure 8 and Figure 10 It shows a schematic diagram when the locking block 1031 does not press the second buckle F. Figure 9 and Figure 11 It shows a schematic diagram of the locking block 1031 pressing the second buckle F. Figure 8 and Figure 9 is a side view, Figure 10 and Figure 11 This is a top view.

[0118] In this embodiment, the locking mechanism 103 includes a locking block 1031, a first screw 1032 and a second screw 1033. The locking block 1031 has a first elongated hole G extending laterally and a second elongated hole H extending vertically. After the first screw 1032 cooperates with the first elongated hole G, the locking block 1031 has a laterally sliding allowance. After the second screw 1033 cooperates with the second elongated hole H, the locking block 1031 has a vertical sliding allowance. The locking block 1031 includes adjacent laterally clamping edges I and vertically clamping edges J. The laterally clamping edge I is used to achieve vertical clamping of the second lap buckle F, and the vertically clamping edge J is used to achieve laterally clamping the second lap buckle F. The end of the first elongated hole G close to the ladder side beam 101 is inclined toward the laterally clamping edge I, and the end of the second elongated hole H close to the ladder side beam 101 is inclined toward the vertically clamping edge J.

[0119] In this embodiment, the locking block 1031 can be set as a triangular component, such as a right triangle, and the first elongated hole G and the second elongated hole H are both inclined. As the first screw 1032 is tightened on the ladder side beam 101, due to the inclination of the first elongated hole G, the first screw 1032 will squeeze the first elongated hole G, causing the locking block 1031 to slide downward. Since the second bolt has a vertical sliding margin in the second elongated hole H, the second bolt will not interfere with the sliding of the locking block 1031. The locking block 1031 can also achieve vertical compression of the second lap buckle F; as the second screw 1033 is tightened on the ladder side beam 101, due to the inclination of the second long hole H, the second screw 1033 will squeeze the second long hole H, causing the locking block 1031 to slide left or right. Since the first bolt has a lateral sliding margin in the first long hole G, the first bolt will not interfere with the sliding of the locking block 1031, and the locking block 1031 can also achieve lateral compression of the second lap buckle F.

[0120] This locking mechanism 103 can achieve rapid locking of the second lap buckle F on the second corbel, while not requiring high matching accuracy between the second lap buckle F and the second corbel, which is beneficial to further improving the construction efficiency of the modular overpass.

[0121] Specifically, the second lap buckle F compressed by the horizontal compression edge I and the second lap buckle F compressed by the vertical compression edge J are two adjacent independent components. The continuous stairway plate 102 corresponds to the continuous locking mechanism 103, which can realize the horizontal compression and vertical compression of all stairway plates 102 on the stairway side beam 101.

[0122] It can be understood that, except for any conflicting parts, the above-mentioned embodiments 1-7 can be freely combined to form other implementation methods of the present invention.

[0123] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0124] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0125] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0126] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.

[0127] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A combined overpass, characterized by: include: A first stairway (1), an intermediate platform (2) and a second stairway (3), wherein adjacent sides of the first stairway (1) and the second stairway (3) are overlapped on both sides of the intermediate platform (2); It also includes a casting section (4) and a pier (5), wherein the pier (5) is connected to the intermediate platform (2) through the casting section (4) to support the intermediate platform (2); The pouring section (4) comprises a trough (41), an outer protrusion (42) and a steel bar assembly (43); the trough (41) is fixed to the top of the pier (5); the outer protrusion (42) is fixed to the bottom of the intermediate platform (2); a pouring cavity (A) is formed in the trough (41); the pouring cavity (A) and the outer protrusion (42) are plugged into each other; the steel bar assembly (43) is arranged in the pouring cavity (A) to strengthen the connection after UHPC concrete is poured into the pouring cavity (A); Wherein, the first stairway (1), the intermediate platform (2) and the second stairway (3) are all prefabricated parts formed of UHPC concrete; The first stairway (1) and the second stairway (3) both comprise stairway side beams (101) and stairway plates (102); The inner side of the stairway side beam (101) is provided with a second lapped corbel (E), and both ends of the stairway plate (102) are provided with a second lapped buckle (F) that matches the second lapped corbel (E); The second lapped corbel (E) is an inverted U-shaped protruding piece, and the second lapped buckle (F) is an inverted U-shaped buckle; The first stairway (1) and the second stairway (3) further include a locking mechanism (103) for locking the overlapping relationship between the two ends of the stairway plate (102) and the stairway side beam (101); The locking mechanism (103) comprises a locking block (1031), a first screw (1032) and a second screw (1033); the locking block (1031) has a first elongated hole (G) extending vertically and a second elongated hole (H) extending horizontally; after the first screw (1032) is engaged with the first elongated hole (G), the locking block (1031) has a horizontal sliding margin; after the second screw (1033) is engaged with the second elongated hole (H), the locking block (1031) has a vertical sliding margin; The locking block (1031) has adjacent transverse pressing edges (I) and vertical pressing edges (J), one end of the first elongated hole (G) close to the ladder side beam (101) is inclined toward the transverse pressing edge (I), and one end of the second elongated hole (H) close to the ladder side beam (101) is inclined toward the vertical pressing edge (J), so that after the first screw (1032) and the second screw (1033) are tightened on the ladder side beam (101), the transverse pressing edge (I) vertically presses the second lap buckle (F), and the vertical pressing edge (J) transversely presses the second lap buckle (F); The second lap joint (F) pressed by the transverse pressing edge (I) and the second lap joint (F) pressed by the vertical pressing edge J are two adjacent and independent second lap joints (F), and the continuous stairway plates (102) correspond to the continuous locking mechanisms (103).

2. The combined overpass according to claim 1, characterized in that: The steel bar assembly (43) includes a U-shaped steel bar (431), a first mouth-shaped steel bar (432), a second mouth-shaped steel bar (433) and a main steel bar (434); The U-shaped steel bar (431) is pre-buried in the trough body (41), and both ends of the U-shaped steel bar (431) extend vertically; The first mouth-shaped steel bar (432) and the second mouth-shaped steel bar (433) are respectively pre-embedded transversely in the side wall of the outer protrusion (42) and the side wall of the trough body (41); The main steel bars (434) are pre-buried in the middle platform (2) and extend into the casting cavity (A).

3. The combined overpass according to claim 2, characterized in that: The intermediate platform (2) is provided with a pouring port (B), and the pouring port (B) passes through the intermediate platform (2) and extends to the pouring cavity (A); The main steel bar (434) extends from the pouring port (B) to the pouring cavity (A).

4. The combined overpass according to claim 2 or 3, characterized in that: The first mouth-shaped steel bars (432) and the second mouth-shaped steel bars (433) are vertically staggered.

5. The combined overpass according to claim 1, characterized in that: Both sides of the intermediate platform (2) are also provided with first overlapping brackets (C), and one side of each of the first ladder (1) and the second ladder (3) is provided with a first overlapping buckle (D) that matches the first overlapping bracket (C).

6. The combined overpass according to claim 5, characterized in that: The stairway side beams (101) are provided in at least two pieces, the stairway plates (102) are provided in a plurality, and both ends of the stairway plates (102) are overlapped with the stairway side beams (101).

7. The combined overpass according to claim 6, characterized in that: The stairway side beam (101) is configured as a hollow structure.

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