Reinforced concrete arch bridge main arch ring supporting system in complex environment

Abstract

The invention relates to the technical field of arch bridges, and discloses a reinforced concrete arch bridge main arch ring supporting system in a complex environment, which comprises a plurality of buttresses arranged at a bridge site, the plurality of buttresses are sequentially arranged at intervals along the length direction of the bridge site, and an arch bridge interval is arranged between every two adjacent buttresses; bailey beams are arranged on the arch bridge intervals, the ends of the Bailey beams abut against the buttresses, and the Bailey beams stretch across the arch bridge intervals. The bailey beam is provided with an arch-shaped formwork which is arranged in an upward arc-shaped arching mode, a pouring area for pouring concrete to form a main arch ring is formed at the top of the arch-shaped formwork, and the end of the arch-shaped formwork is fixedly arranged. An arch ring area is formed between the arch formwork and the bailey beam, an in-ring support is arranged in the arch ring area, and the arch formwork and the bailey beam are fixed through the in-ring support. According to the supporting system established through the mutual synergistic effect of all the structures, the overall stability and strength of the main arch ring supporting structure are enhanced, the construction efficiency is improved, and meanwhile the durability and safety of the earth arch bridge are improved.

Description

Technical Field

[0001] This invention patent relates to the technical field of arch bridges, specifically, to the main arch ring support system of reinforced concrete arch bridges in complex environments. Background Art

[0002] Benefiting from the progress of construction technology, material technology, and calculation technology, the number of earthen arch bridges built in China has increased rapidly, with significant breakthroughs in span, especially in the rapid development of concrete-filled steel tube arch bridges.

[0003] In complex environments such as mountains and deep valleys, the traditional main arch ring support system of earthen arch bridges may be difficult to adapt to changes in terrain and geological conditions, making construction difficult and accompanied by high risks.

[0004] In the existing technology, in the face of complex environments, the main arch ring support system of earthen arch bridges does not utilize the structural relationship between piers, the intervals of the arch bridges, and Bailey beams to form a solid foundation framework. Especially during the construction process of the main arch ring, it will lead to insufficient strength of the main arch ring support structure of the earthen arch bridge, unable to provide sufficient stability and safety.

[0005] In addition, the setting of in-circle supports within the arch ring area is ignored, and the arched formwork is fixed to the Bailey beam, making the support system unable to adapt to the construction conditions in complex environments, reducing the resistance of the overall structure of the main arch ring of the earthen arch bridge to uneven settlement and external impacts. Summary of the Invention

[0006] The purpose of this invention is to provide a main arch ring support system for reinforced concrete arch bridges in complex environments, aiming to solve the problem of insufficient strength of the overall support structure of the main arch ring in the existing technology in complex environments.

[0007] This invention is implemented as follows. It includes a plurality of piers arranged at the bridge site, and the plurality of piers are arranged at intervals in sequence along the length direction of the bridge site. There is an arch bridge interval between adjacent piers; a Bailey beam is provided on the arch bridge interval, and the end of the Bailey beam abuts against the pier, and the Bailey beam spans across the arch bridge interval.

[0008] An arched formwork is provided on the Bailey beam and is arranged in an upward arc shape. The top of the arched formwork forms a pouring area for pouring concrete to form the main arch ring, and the ends of the arched formwork are fixedly arranged; an arch ring area is formed between the arched formwork and the Bailey beam, and in-circle supports are provided in the arch ring area to fix the arched formwork and the Bailey beam.

[0009] Furthermore, along the length direction of the bridge site, a plurality of sequentially arranged arch bridge intervals are formed at the bridge site.

[0010] Further, the end of the arch formwork extends beyond the end of the Bailey beam, and the end of the arch formwork is connected to the inner support bracket, and the inner support bracket supports the end of the arch formwork in a fixed arrangement.

[0011] Further, the end of the arch formwork extends to the top of the pier and abuts against the top of the pier.

[0012] Further, a plurality of steel pipe piles are provided in the arch bridge interval, and the steel pipe piles abut against the bottom of the Bailey beam from bottom to top.

[0013] Further, a fixed pile position formed by concrete pouring is provided at the bottom of the arch bridge interval, the bottom of the steel pipe pile is fixedly connected to the fixed pile position, and the top of the steel pipe pile abuts against the bottom of the Bailey beam from bottom to top.

[0014] Further, the fixed pile position is embedded and fixed in the soil body, and the bottom of the steel pipe pile is embedded inside the fixed pile position to form an integral structure with the fixed pile position.

[0015] Further, a plurality of the steel pipe piles are arranged at intervals along the width direction of the arch bridge interval, a plurality of the Bailey beams are provided on the arch bridge interval, and a plurality of the Bailey beams are arranged at intervals along the width direction of the arch bridge interval;

[0016] An integral width beam is provided at the bottom of a plurality of the Bailey beams, the width beam is connected to the plurality of Bailey beams as a whole, and the tops of the plurality of Bailey beams abut against the width beam from bottom to top.

[0017] Further, the top of the width beam abuts against the bottoms of the plurality of Bailey beams, the width beam is locked and connected to the Bailey beam by bolts to form an integral structure with the Bailey beam; the top of the steel pipe pile is disc-shaped, and the bottom of the width beam has a plurality of disc-shaped support areas, and the top of the steel pipe pile abuts against the support areas from bottom to top.

[0018] Further, the steel pipe pile includes an outer casing, an inner casing arranged movably is sleeved inside the outer casing, an annular casing interval is formed between the outer casing and the inner casing, the casing interval is filled with an elastic body, and the elastic body relatively fixes the inner casing and the outer casing; the top of the inner casing extends out of the top of the outer casing, and the bottom of the inner casing is arranged in a suspended manner;

[0019] The top of the inner casing abuts against the support area from bottom to top, the top of the outer casing abuts against the support area from bottom to top, and the elastic body is squeezed and elastically deformed downward and out of position.

[0020] Compared with the prior art, the main arch ring support system of the reinforced concrete arch bridge provided by the present invention has the following several advantages:

[0021] 1) By arranging multiple piers at the bridge site and setting an arch bridge interval between adjacent piers, and using Bailey beams to span the arch bridge interval, a solid foundation framework is formed. In this way, the overall strength of the main arch ring support structure is improved, enabling it to withstand greater loads and external environmental pressures.

[0022] 2) By arranging the arched formwork in an upward arc and forming a pouring area at the top, not only a stable concrete pouring platform is provided, but also the stability and strength of the main arch ring support structure are further enhanced through the fixed arrangement of the ends of the arched formwork.

[0023] 3) The inner support brackets arranged within the arch ring area fix the arched formwork and the Bailey beams, enabling the support system to better adapt to the construction conditions in complex environments and improving the resistance to uneven settlement and external impacts. Additionally, through the inner support brackets that form a fixed connection between the arched formwork and the Bailey beams, the stability of the main arch ring during construction is ensured, reducing the safety risks caused by insufficient strength of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view schematic diagram of the main arch ring support system of the reinforced concrete arch bridge in a complex environment provided by the present invention;

[0025] Figure 2 is the structural schematic diagram of the steel pipe pile provided by the present invention;

[0026] Figure 3 is the structural schematic diagram of the abutting support area of the steel pipe pile provided by the present invention;

[0027] In the figure: pier 100, arch bridge interval 101, Bailey beam 200, arched formwork 201, pouring area 202, width beam 203, support area 204, steel pipe pile 300, fixed pile position 301, soil body 302, outer sleeve 303, inner sleeve 304, elastomer 305. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Referring to Figures 1-3 as shown, it is a preferred embodiment provided by the present invention.

[0032] The main arch ring support system of a reinforced concrete arch bridge in a complex environment includes a plurality of piers 100 arranged at the bridge site. The plurality of piers 100 are arranged at intervals in sequence along the length direction of the bridge site, and there is an arch bridge interval 101 between adjacent piers 100; a Bailey beam 200 is provided on the arch bridge interval 101. The end of the Bailey beam 200 abuts against the pier 100, and the Bailey beam 200 spans across the arch bridge interval 101;

[0033] An upwardly arched arched formwork 201 is provided on the Bailey beam 200. A pouring area 202 for pouring concrete to form the main arch ring is formed at the top of the arched formwork 201, and the ends of the arched formwork 201 are fixedly arranged; an arch ring area is formed between the arched formwork 201 and the Bailey beam 200, and an inner support is provided in the arch ring area. The inner support fixes the space between the arched formwork 201 and the Bailey beam 200.

[0034] The above-mentioned main arch ring support system of a reinforced concrete arch bridge in a complex environment has the following advantages:

[0035] 1). By arranging a plurality of piers 100 at the bridge site and setting an arch bridge interval 101 between adjacent piers 100, and using the Bailey beam 200 to span across the arch bridge interval 101, a solid foundation framework is formed. In this way, the overall strength of the main arch ring support structure is improved, enabling it to withstand greater loads and external environmental pressures.

[0036] 2). By arranging the arched formwork 201 in an upwardly arched shape and forming a pouring area 202 at the top, not only a stable concrete pouring platform is provided, but also the stability and strength of the main arch ring support structure are further enhanced through the fixed arrangement of the ends of the arched formwork 201.

[0037] 3) The inner support brackets arranged within the arch ring area fix the arch formwork 201 and the Bailey truss 200, enabling the support system to better adapt to construction conditions in complex environments and enhancing the resistance to uneven settlement and external impacts. Additionally, by forming the inner support brackets that fixedly connect the arch formwork 201 and the Bailey truss 200, the stability of the main arch ring during the construction process is ensured, reducing the safety risks caused by insufficient strength of the support structure.

[0038] In this embodiment, along the length direction of the bridge site, multiple arch bridges intervals 101 are arranged in sequence at the bridge site. In this way, the effective division of the bridge site space is achieved, providing an orderly working area for the subsequent construction of the soil arch bridge and enhancing the organization and systematicness of the construction.

[0039] In this embodiment, the end of the arch formwork 201 extends beyond the end of the Bailey truss 200. The end of the arch formwork 201 is connected to the inner support brackets, and the inner support brackets support the end of the arch formwork 201 in a fixed arrangement.

[0040] Through the connection with the inner support brackets, additional stability is provided for the arch formwork 201, ensuring that the shape and position of the main arch ring can be accurately controlled during the concrete pouring process, thereby improving the overall strength of the structure and the construction accuracy.

[0041] In this embodiment, the end of the arch formwork 201 extends to the top of the pier 100 and abuts against the top of the pier 100. In this way, the connection strength between the formwork and the pier 100 is enhanced, enabling the arch formwork 201 to more effectively transfer the load to the pier 100, thereby improving the load-bearing capacity and stability of the entire arch bridge structure.

[0042] In this embodiment, multiple steel pipe piles 300 are provided in the arch bridge interval 101. The steel pipe piles 300 abut against the bottom of the Bailey truss 200 from bottom to top. By setting the steel pipe piles 300 to abut against the bottom of the Bailey truss 200, the steel pipe piles 300 play an additional supporting role, increasing the stability of the Bailey truss 200 and also providing additional strength and stiffness for the entire main arch ring structure of the arch bridge.

[0043] In this embodiment, a fixed pile position 301 formed by concrete pouring is provided at the bottom of the arch bridge interval 101. The bottom of the steel pipe pile 300 is fixedly connected to the fixed pile position 301, and the top of the steel pipe pile 300 abuts against the bottom of the Bailey truss 200 from bottom to top. The setting of the fixed pile position 301 and its fixed connection with the bottom of the steel pipe pile 300 provide a solid foundation for the steel pipe pile 300. This design ensures the stability of the steel pipe pile 300 when bearing the load, and also enhances the supporting capacity of the Bailey truss 200, improving the stability and strength of the overall structure.

[0044] In this embodiment, the fixed pile position 301 is embedded and fixed in the soil body 302, and the bottom of the steel pipe pile 300 is embedded inside the fixed pile position 301, forming an integral structure with the fixed pile position 301. In this way, the stability of the structure is greatly improved. This design enables the steel pipe pile 300 to more effectively resist external loads, enhancing the anti-overturning ability and overall strength of the entire soil arch bridge structure.

[0045] In this embodiment, multiple steel pipe piles 300 are arranged at intervals along the width direction of the arch bridge interval 101. Multiple Bailey beams 200 are provided on the arch bridge interval 101, and the multiple Bailey beams 200 are arranged at intervals along the width direction of the arch bridge interval 101;

[0046] An integral width beam 203 is provided at the bottom of the multiple Bailey beams 200. The width beam 203 is connected to the multiple Bailey beams 200 as a whole. The tops of the multiple Bailey beams 200 abut against the width beam 203 from bottom to top. In this way, the integration and reinforcement of the Bailey beams 200 are realized. The bearing capacity of the Bailey beams 200 and the stability of the overall structure are improved, and the construction process is also simplified.

[0047] In this embodiment, the top of the width beam 203 abuts against the bottom of the multiple Bailey beams 200. The width beam 203 is locked and connected to the Bailey beams 200 by bolts, forming an integral structure with the Bailey beams 200; the top of the steel pipe pile 300 is disc-shaped, and the bottom of the width beam 203 has multiple disc-shaped support areas 204. The top of the steel pipe pile 300 abuts against the support areas 204 from bottom to top.

[0048] Through the locked connection between the width beam 203 and the Bailey beams 200, and the cooperation between the top of the steel pipe pile 300 and the support areas 204 at the bottom of the width beam 203, the overall structure of the soil arch bridge provides additional stability and strength. It ensures the continuity and uniformity in the load transfer process, reduces local stress concentration, and improves the overall performance of the overall structure of the soil arch bridge.

[0049] In this embodiment, the steel pipe pile 300 includes an outer sleeve 303. An inner sleeve 304 arranged movably is sleeved inside the outer sleeve 303. There is an annular sleeve interval between the outer sleeve 303 and the inner sleeve 304. The sleeve interval is filled with an elastomer 305, and the elastomer 305 relatively fixes the inner sleeve 304 and the outer sleeve 303; the top of the inner sleeve 304 extends out of the top of the outer sleeve 303, and the bottom of the inner sleeve 304 is suspended.

[0050] The top of the inner casing 304 abuts against the support area 204 from bottom to top, and the top of the outer casing 303 abuts against the support area 204 from bottom to top. The elastomer 305 is squeezed and deformed downward and displaced. Through the design of the inner and outer casings 303 and the filling of the elastomer 305, the steel pipe pile 300 has good elasticity and buffering capacity. Thus, the steel pipe pile 300 can adapt to different construction conditions and load changes, improving the adaptability and durability of the steel pipe pile 300.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The main arch ring support system of reinforced concrete arch bridge in complex environment is characterized by: The invention comprises a plurality of piers arranged at the bridge position, wherein the plurality of piers are sequentially arranged at intervals along the length direction of the bridge position, and an arch bridge interval is provided between adjacent piers; a Bailey beam is provided on the arch bridge interval, and the end of the Bailey beam abuts on the pier, and the Bailey beam spans the arch bridge interval; An arched formwork arranged in an upward arc shape is provided on the Bailey beam, the top of the arched formwork forms a casting area for pouring concrete to form a main arch ring, and the end of the arched formwork is fixedly arranged; an arch ring area is formed between the arched formwork and the Bailey beam, and an inner ring bracket is provided in the arch ring area, and the inner ring bracket fixes the arched formwork and the Bailey beam.

2. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 1, characterized in that: Along the length direction of the bridge position, the bridge position is formed with a plurality of arch bridge intervals arranged in sequence.

3. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 1, characterized in that: The end of the arched formwork extends outside the end of the Bailey beam, and the end of the arched formwork is connected to the inner-circle bracket, and the inner-circle bracket supports the end of the arched formwork in a fixed arrangement.

4. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 3, characterized in that: The end of the arch formwork extends to the top of the pier and abuts against the top of the pier.

5. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 1, characterized in that: A plurality of steel pipe piles are arranged in the intervals of the arch bridge, and the steel pipe piles abut against the bottom of the Bailey beam from bottom to top.

6. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 5, characterized in that: A fixed pile position formed by pouring concrete is provided at the bottom of the arch bridge interval, the bottom of the steel pipe pile is fixedly connected to the fixed pile position, and the top of the steel pipe pile abuts against the bottom of the Bailey beam from bottom to top.

7. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 6, characterized in that: The fixed pile position is embedded and fixed in the soil, and the bottom of the steel pipe pile is embedded in the interior of the fixed pile position to form an integrated structure with the fixed pile position.

8. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in any one of claims 1 to 7, characterized in that: A plurality of steel pipe piles are arranged at intervals along the width direction of the arch bridge interval, a plurality of Bailey beams are provided on the arch bridge interval, and the plurality of Bailey beams are arranged at intervals along the width direction of the arch bridge interval; An integral width beam is provided at the bottom of the plurality of Bailey beams, the width beam is connected to the plurality of Bailey beams as a whole, and the tops of the plurality of Bailey beams abut against the width beam from bottom to top.

9. The main arch ring support system of reinforced concrete arch bridge in complex environment as claimed in claim 8, characterized in that: The top of the width beam abuts against the bottoms of multiple Bailey beams, and the width beam is locked and connected to the Bailey beams by bolts to form an integrated structure with the Bailey beams; the top of the steel pipe pile is disc-shaped, and the bottom of the width beam has multiple disc-shaped supporting areas, and the top of the steel pipe pile abuts against the supporting areas from bottom to top.

10. The main arch ring support system of reinforced concrete arch bridge in complex environment according to any one of claims 1 to 7, characterized in that: The steel pipe pile comprises an outer sleeve, wherein the inner sleeve is sleeved with a movable inner sleeve, an annular sleeve gap is provided between the outer sleeve and the inner sleeve, and the sleeve gap is filled with an elastic body, and the elastic body fixes the inner sleeve and the outer sleeve relatively; the top of the inner sleeve extends out of the top of the outer sleeve, and the bottom of the inner sleeve is suspended; The top of the inner sleeve abuts against the support area from bottom to top, the top of the outer sleeve abuts against the support area from bottom to top, and the elastic body is squeezed and elastically deformed in a downward displaced manner.

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