A hanger structure for a segmented concrete bridge erection pipeline

Abstract

The application discloses a kind of hoist frame structures of framing concrete bridge erection pipeline, including symmetrically arranged pre-buried seamless steel pipe framework, hoist frame upper vertical pole, hoist frame lower vertical pole, the pre-buried seamless steel pipe framework includes upper pre-buried steel plate, lower pre-buried steel plate, pre-buried reinforcing steel and seamless steel pipe, a plurality of pre-buried reinforcing steel is equipped between the upper pre-buried steel plate and lower pre-buried steel plate, and seamless steel pipe is arranged between the pre-buried reinforcing steel in middle portion;The lower pre-buried steel plate is connected with the top of hoist frame upper vertical pole, the bottom of hoist frame upper vertical pole is connected with the top of hoist frame lower vertical pole, and the bottom of hoist frame lower vertical pole is connected with hoist frame crossbeam by lug plate, and pipeline support is symmetrically arranged on the hoist frame crossbeam.The hoist frame structure of the application does not need to additionally increase the width of bridge flange plate, has the characteristics of good landscape effect, convenient installation, reasonable stress, convenient operation replacement and maintenance etc.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology for municipal pipelines crossing bridges, specifically to a suspension structure for pipelines on a segmented concrete bridge. Background Technology

[0002] With my country's economic growth and urban expansion, the types and quantities of municipal pipelines laid in cities are increasing. When crossing rivers, how these pipelines cross is a crucial consideration. Currently, there are several common methods for pipelines to cross bridges:

[0003] The first type is the construction of new municipal bridges, with pipelines laid along the bridge. The types and quantities of pipelines crossing the bridge are already determined. The bridge structure is designed according to the pipeline parameters, and pipeline channels are reserved. The advantage of this method is that it avoids the problem of repeated construction in the later stage, has good economic benefits, and is widely used. The existing methods of laying pipelines along the bridge in newly built concrete bridges are: (1) Reserve pipeline space on the bridge deck, and arrange the pipelines in the middle or on both sides of the top of the bridge deck. Generally, it is necessary to widen the bridge flange plate. The disadvantage is that it occupies the bridge deck space, and large-diameter pipelines require more space, resulting in poor driving landscape effect. (2) Arrange pipelines inside the box girder. The disadvantage is that the installation and operation and maintenance are difficult. (3) Add a cantilever structure on the outside of the bottom plate of the box girder, and arrange the pipelines on the cantilever structure. The disadvantage is that a new cantilever structure needs to be built, which increases the construction difficulty. (4) Embed steel plates on the outside of the box girder, and weld the pipeline hangers to the embedded steel plates as a whole. The disadvantage is that the uneven deformation of the bridge causes uneven stress on the hanger structure, requiring a lot of on-site welding, making installation difficult, and operation, maintenance and replacement difficult.

[0004] The second option is to construct a dedicated bridge for pipelines, which is beneficial for pipeline construction and maintenance, but has the disadvantages of increasing costs and affecting the landscape.

[0005] The third type is the open-cut direct burial method, which is suitable for situations where the river channel is narrow, the water depth is shallow, and the construction difficulty of open-cut direct burial is low. The disadvantage is that there are many restrictions and its application is less common. Summary of the Invention

[0006] The purpose of this invention is to provide a suspension structure for pipelines on a segmented concrete bridge. This structure does not require additional width of the bridge flange and features good aesthetics, convenient installation, reasonable stress distribution, and ease of operation, replacement, and maintenance.

[0007] To achieve the above objectives, the technical solution of this application is as follows: a hanger structure for pipeline installation on a segmented concrete bridge, comprising a symmetrically arranged pre-embedded seamless steel pipe skeleton, an upper hanger vertical rod, and a lower hanger vertical rod. The pre-embedded seamless steel pipe skeleton includes an upper pre-embedded steel plate, a lower pre-embedded steel plate, pre-embedded reinforcing bars, and seamless steel pipes. Multiple pre-embedded reinforcing bars are provided between the upper and lower pre-embedded steel plates, and seamless steel pipes are provided between the pre-embedded reinforcing bars located in the middle. The lower pre-embedded steel plate is connected to the top of the upper hanger vertical rod, the bottom of the upper hanger vertical rod is connected to the top of the lower hanger vertical rod, and the bottom of the lower hanger vertical rod is connected to the hanger crossbeam through an ear plate. Pipeline supports are symmetrically provided on the hanger crossbeam.

[0008] Furthermore, the pre-embedded seamless steel pipe frame is installed on the corresponding bridge flange plate, wherein the upper pre-embedded steel plate is located on the top surface of the bridge flange plate and the lower pre-embedded steel plate is located on the bottom surface of the bridge flange plate.

[0009] Furthermore, the lower embedded steel plate is connected to the first steel plate at the top of the vertical rod of the hanger.

[0010] High-strength bolts pass through the upper embedded steel plate, seamless steel pipe, lower embedded steel plate, and first steel plate in sequence and are connected to the waterproof nut, thereby fixing the vertical rod of the hanger to the embedded seamless steel pipe frame.

[0011] Furthermore, the second steel plate at the bottom of the upper vertical rod of the hanger is connected to the third steel plate at the top of the lower vertical rod of the hanger, and the second and third steel plates are fastened by multiple bolts; the bottom of the lower vertical rod of the hanger is connected to the ear plate by a pin.

[0012] Furthermore, a fourth steel plate is provided at one end of the hanger beam, which is connected to the web pre-embedded steel plate. The web pre-embedded bolts pass through the fourth steel plate and the web pre-embedded steel plate in sequence and extend into the web of the bridge, thereby achieving the fixation of the end of the hanger beam.

[0013] Furthermore, a maintenance platform is provided on the hanger beam, which is located between the pipeline supports.

[0014] Furthermore, the upper vertical rod of the hanger is an I-beam structure; the lower vertical rod of the hanger is a steel plate structure.

[0015] Furthermore, the upper vertical rod, lower vertical rod, pin, crossbeam, and maintenance platform of the hanger are all treated with anti-corrosion measures.

[0016] As a further step, a pre-embedded seamless steel pipe frame is positioned and installed when tying the bridge flange reinforcement. The longitudinal dimension of the pre-embedded seamless steel pipe frame is determined to be 2m~4m according to the weight of the pipeline.

[0017] Furthermore, the longitudinal dimension of the embedded steel plate in the web is matched with the longitudinal dimension of the hanger beam, the longitudinal dimension of the hanger beam is determined to be 2m~4m according to the weight of the pipeline, and the longitudinal dimension of the hanger beam is matched with the longitudinal dimension of the pipeline support.

[0018] The present invention achieves the following technical effects due to the adoption of the above technical solutions: the hanger structure of the present invention is set below the flange plate of the concrete bridge, does not occupy the bridge deck space, does not require additional increase in the width of the bridge flange plate, and has a good landscape effect; all components of the hanger structure are manufactured and processed in the factory, and connected on site by bolts and pins, which has the characteristics of good construction quality, convenient on-site installation, short construction period, and convenient operation, maintenance and replacement; the hanger vertical rods are connected by pins, which reduces the internal force of the hanger caused by uneven deformation on both sides of the bridge, and the hanger structure is reasonably stressed; this hanger structure is particularly advantageous for large-diameter water supply pipes and heating pipes laid along the bridge, and is worthy of widespread promotion. Attached Figure Description

[0019] Figure 1 A front view of a suspension structure for pipeline installation on a segmented concrete bridge;

[0020] Figure 2 This is a schematic diagram of a suspension structure for pipelines on a segmented concrete bridge.

[0021] Figure 3 A top view of a section of the suspension structure for pipeline installation on a segmented concrete bridge.

[0022] The numbers in the diagram are explained as follows: 1. Bridge flange plate; 2. Upper embedded steel plate; 3. High-strength bolt; 4. Seamless steel pipe; 5. Embedded reinforcing bar; 6. First steel plate; 7. Waterproof nut; 8. Upper vertical rod of hanger; 9. Bolt; 10. Lower vertical rod of hanger; 11. Pin; 12. Embedded steel plate of web plate; 13. Embedded bolt of web plate; 14. Hanger crossbeam; 15. Pipeline support; 16. Maintenance platform; 17. Ear plate. Detailed Implementation

[0023] The principles of this disclosure will now be described with reference to several exemplary embodiments illustrated in the accompanying drawings. While preferred embodiments of this disclosure are shown in the drawings, it should be understood that these embodiments are described only to enable those skilled in the art to better understand and implement this disclosure, and are not intended to limit the scope of this disclosure in any way.

[0024] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0025] This embodiment provides a hanger structure for pipeline installation on a segmented concrete bridge, including high-strength bolts, a pre-embedded seamless steel pipe framework, upper and lower vertical rods of the hanger, a crossbeam of the hanger, pre-embedded steel plates in the web, pre-embedded bolts in the web, pins, pipeline supports, and a maintenance platform. The pre-embedded seamless steel pipe framework includes an upper pre-embedded steel plate, a lower pre-embedded steel plate, multiple pre-embedded reinforcing bars, and two seamless steel pipes. The upper vertical rod of the hanger is an I-beam structure. The lower vertical rod of the hanger is a steel plate structure. The crossbeam of the hanger is also an I-beam structure with ear plates at both ends. The pins are used to connect the lower vertical rod of the hanger to the ear plates. The pipeline supports are mainly used to place pipelines. The maintenance platform is mainly used to facilitate pipeline installation and maintenance.

[0026] The assembly method for the hanger structure is as follows:

[0027] (1) Prefabricate the following components in the factory: upper embedded steel plate 2, lower embedded steel plate, first steel plate 6, second steel plate, third steel plate, fourth steel plate, high-strength bolt 3, seamless steel pipe 4, embedded steel bar 5, waterproof nut 7, upper vertical rod of hanger 8, bolt 9, lower vertical rod of hanger 10, pin 11, web plate embedded bolt 13, hanger crossbeam 14, pipeline support 15, maintenance platform 16, ear plate 17;

[0028] (2) Weld the upper embedded steel plate 2, the lower embedded steel plate, multiple embedded steel bars 5, and two seamless steel pipes 4 into a whole to form a pre-embedded seamless steel pipe skeleton.

[0029] (3) Weld the fourth steel plate, the hanger beam 14, the pipeline support 15, the maintenance platform 16, and the ear plate 17 into a whole;

[0030] (4) When tying the bridge flange reinforcement, the pre-embedded seamless steel pipe skeleton is positioned and installed. Its longitudinal dimension is determined according to the weight of the pipeline, generally 2m~4m. When tying the web reinforcement, the web pre-embedded steel plate 12 and web pre-embedded bolt 13 are positioned and installed, the template is installed, and the concrete is poured.

[0031] (5) After the bridge concrete strength reaches the design requirements, the high-strength bolt 3 is passed through the upper embedded steel plate, seamless steel pipe, lower embedded steel plate, and first steel plate in sequence and connected to the waterproof nut, and then the vertical rod 8 on the hanger is fixed on the embedded seamless steel pipe skeleton.

[0032] (6) The lower vertical rod 10 of the hanger is bolted to the second steel plate at the bottom of the upper vertical rod of the hanger through the third steel plate at its top, thereby fixing the lower vertical rod of the hanger to the bottom of the upper vertical rod of the hanger.

[0033] (7) Connect the fourth steel plate at the end of the hanger beam 14 to the pre-embedded steel plate in the web and connect them with the pre-embedded bolts 13 in the web. Then connect the lower vertical rod 10 of the hanger to the ear plate on the hanger beam 14 through the pin 11.

[0034] (8) Install municipal pipelines.

[0035] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

[0036] Although the claims in this application have been formulated for specific combinations of features, it should be understood that the scope of this disclosure also includes any novel feature or any novel combination of features, whether express or implied or generalized herein, whether or not it relates to the same scheme in any of the claims currently claimed.

Claims

1. A suspension structure for pipeline installation on a segmented concrete bridge, characterized in that, The system includes a symmetrically arranged pre-embedded seamless steel pipe framework, an upper vertical rod of the hanger, and a lower vertical rod of the hanger. The pre-embedded seamless steel pipe framework includes an upper pre-embedded steel plate, a lower pre-embedded steel plate, pre-embedded reinforcing bars, and seamless steel pipes. Multiple pre-embedded reinforcing bars are provided between the upper and lower pre-embedded steel plates, and seamless steel pipes are provided between the pre-embedded reinforcing bars located in the middle. The lower pre-embedded steel plate is connected to the top of the upper vertical rod of the hanger, and the bottom of the upper vertical rod of the hanger is connected to the top of the lower vertical rod of the hanger. The bottom of the lower vertical rod of the hanger is connected to the crossbeam of the hanger through an ear plate. Pipeline supports are symmetrically provided on the crossbeam of the hanger. The pre-embedded seamless steel pipe frame is installed on the corresponding bridge flange plate, wherein the upper pre-embedded steel plate is located on the top surface of the bridge flange plate and the lower pre-embedded steel plate is located on the bottom surface of the bridge flange plate. The lower embedded steel plate is connected to the first steel plate at the top of the upper vertical rod of the hanger. High-strength bolts pass through the upper embedded steel plate, seamless steel pipe, lower embedded steel plate, and first steel plate in sequence and are connected to the waterproof nut, thereby fixing the upper vertical rod of the hanger to the embedded seamless steel pipe skeleton. The second steel plate at the bottom of the upper vertical rod of the hanger is connected to the third steel plate at the top of the lower vertical rod of the hanger, and the second and third steel plates are fastened by multiple bolts; the bottom of the lower vertical rod of the hanger is connected to the ear plate by a pin. The hanger beam has a fourth steel plate at one end, which is connected to the web pre-embedded steel plate. The web pre-embedded bolts pass through the fourth steel plate and the web pre-embedded steel plate in sequence and extend into the web of the bridge, thereby fixing the end of the hanger beam.

2. The suspension structure for pipeline erection on a segmented concrete bridge according to claim 1, characterized in that, The maintenance platform is provided on the crossbeam of the hanger, and the maintenance platform is located between the pipeline supports.

3. The suspension structure for pipeline erection on a segmented concrete bridge according to claim 1, characterized in that, The upper vertical rod of the hanger is an I-beam structure; the lower vertical rod of the hanger is a steel plate structure.

4. The suspension structure for pipeline erection on a segmented concrete bridge according to claim 1, characterized in that, The upper and lower vertical rods of the hanger, the pins, the crossbeams of the hanger, and the maintenance platform are all treated with anti-corrosion measures.

5. The suspension structure for pipeline erection on a segmented concrete bridge according to claim 1, characterized in that, When tying the reinforcing bars of the bridge flange plate, a pre-embedded seamless steel pipe frame is positioned and installed. The longitudinal dimension of the pre-embedded seamless steel pipe frame is determined to be 2m~4m according to the weight of the pipeline.

6. The suspension structure for pipeline erection on a segmented concrete bridge according to claim 1, characterized in that, The longitudinal dimension of the embedded steel plate in the web plate is matched with the longitudinal dimension of the hanger beam. The longitudinal dimension of the hanger beam is determined to be 2m~4m according to the weight of the pipeline, and the longitudinal dimension of the hanger beam is matched with the longitudinal dimension of the pipeline support.

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