Hollowed-out separated ship collision prevention pier based on Bernoulli principle
By using Bernoulli principle to design the hollowed-type anti-ship collision piers in the separated anti-ship collision piers, the arc-shaped downward part and hollow groove structure are used, and the material usage and the environment of high and low water level differences are solved. The problem of high construction costs has achieved structural stability and cost saving effects.
Patent Information
- Application Number
- CN202420061308.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-10
AI Technical Summary
In the waterway environment where the high and low water levels are different, the material amount is high, the construction cost is high, and the pier is too heavy, and the risk of support instability is likely to occur.
The hollowed-type separate anti-ship collision piers based on Bernoulli's principle includes a support structure and an anti-ship collision body. The anti-ship collision body consists of an anti-collision part and a lower pressure part. The lower pressure part is arc-shaped and the anti-collision part is inside. With hollow grooves, the support structure includes vertical and inclined pile foundations, which are used to decompose impact forces and reduce material usage and construction costs.
Through the design of the downward pressure part, the water flow rate is increased, the pressure is reduced, the downward pressure is formed, the anti-collision performance is improved, the material used in the anti-collision part is reduced, the construction cost is reduced, and the structural stability is ensured.
Smart Images
Figure CN222206008U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridges, in particular to a hollow separated ship collision prevention bridge pier based on the Bernoulli principle. Background Art
[0002] Accidents caused by ships colliding with bridges due to water flow, wind direction and other reasons during navigation have always been the focus of research in the bridge industry. Anti-collision devices are usually installed around bridge piers to protect the piers and prevent damage to the bridge.
[0003] In the prior art, separate anti-ship collision piers are adopted to prevent the impact energy generated by a ship collision from being transmitted to the bridge itself. Independent anti-collision piers are adopted. When in a waterway environment with a large difference in high and low water levels, the pile foundation of the anti-collision pier needs to be increased. In order to ensure the anti-collision strength, the pier body itself needs to be increased, which increases the amount of material used and the construction cost. In addition, the pier body itself is too heavy and easily causes the risk of unstable support. If the number of pile foundations needs to be increased to ensure the stability of the support, the construction cost is also increased.
[0004] In view of this, it is necessary to propose a hollow separated anti-ship collision pier based on the Bernoulli principle to solve or at least alleviate the above defects. Utility Model Content
[0005] The main purpose of the utility model is to provide a hollow separated anti-ship collision pier based on the Bernoulli principle, so as to solve the problems of high material consumption and high construction cost of the separated anti-collision pier in the prior art in a waterway environment with a large difference in high and low water levels.
[0006] To achieve the above-mentioned purpose, the utility model provides a hollow separated anti-ship collision bridge pier based on the Bernoulli principle, comprising a supporting structure and an anti-ship collision body; wherein:
[0007] The anti-ship collision body includes an anti-collision part and a downward pressing part. The downward pressing part is fixed on the supporting structure, and the downward pressing part is in an arc shape bending downward. The anti-collision part is arranged on the downward pressing part, and the top of the anti-collision part is arranged horizontally. The interior of the anti-collision part has a plurality of hollow grooves arranged at intervals.
[0008] Preferably, the support structure comprises a vertical pile foundation group and an inclined pile foundation group arranged at intervals along the extension direction of the anti-ship collision body, a plurality of the vertical pile foundation groups are arranged at intervals along the extension direction of the anti-ship collision body, and the inclined pile foundation group is arranged on a side close to the bridge pier; wherein,
[0009] Each of the vertical pile foundation groups includes two middle vertical pile foundations arranged opposite to each other along the width direction of the anti-ship collision body;
[0010] The inclined pile foundation group includes two inclined pile foundations arranged relatively along the width direction of the anti-ship collision body, the pressing portion is fixed to the top of the vertical pile foundation and the inclined pile foundation, and the inclined pile foundation is inclined from the top to the bottom toward the bridge pier.
[0011] Preferably, a horizontal cross-section of an end of the anti-collision portion away from the bridge pier is triangular.
[0012] Preferably, one end of the triangular section of the anti-collision portion away from the bridge pier has a circular chamfer.
[0013] Preferably, the plurality of hollow grooves are distributed in a grid shape.
[0014] Preferably, the height of the arc top of the downward pressing portion is 1 m to 1.5 m.
[0015] Preferably, the number of the vertical pile foundation groups is three, and the three vertical pile foundation groups are arranged at intervals along the extension direction of the anti-ship collision body.
[0016] Preferably, the angle between the axis of the inclined pile foundation and the horizontal plane is 70° to 75°.
[0017] Preferably, the diameters of the inclined pile foundation and the vertical pile foundation are both 1.8 m to 2 m.
[0018] Preferably, it also includes a ladder, which is fixed to an end of the anti-collision part away from the bridge pier.
[0019] Compared with the prior art, the utility model provides the following beneficial effects:
[0020] The utility model provides a hollow separated anti-ship collision bridge pier based on Bernoulli's principle, including a supporting structure and an anti-ship collision body, the anti-ship collision body including an anti-collision part and a downward pressure part, the downward pressure part is fixed on the supporting structure, and the downward pressure part is in a downwardly curved arc shape, the anti-collision part is arranged on the downward pressure part, the top of the anti-collision part is arranged horizontally, and the interior of the anti-collision part has a plurality of hollow grooves arranged at intervals. In this way, the downward pressure part can be used to make the water flow have a larger flow rate when passing through, and according to the Bernoulli principle, the flow rate at the downward pressure part is fast and the pressure is small, so that the entire anti-ship collision body forms a downward downward pressure, improves the anti-collision performance, and can reduce the material of the anti-collision part in combination with the downward pressure while ensuring the overall force, and there is no need to expand the specifications and numbers of pile foundations, which greatly saves construction costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0022] Figure 1 It is a schematic elevation diagram of the overall structure in one embodiment of the utility model;
[0023] Figure 2 It is a plan view of the overall structure in one embodiment of the utility model.
[0024] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.
[0025] Description of Figure Numbers:
[0026] 10. Anti-ship collision body; 110. Anti-collision part; 111. Hollow groove; 112. Ladder; 120. Down-pressing part; 20. Support structure; 210. Vertical pile foundation; 220. Inclined pile foundation. DETAILED DESCRIPTION
[0027] 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.
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0031] Please see attached Figure 1-2 In one embodiment, the utility model provides a hollow separated anti-ship collision pier based on the Bernoulli principle, including a support structure 20 and an anti-ship collision body 10. First of all, it should be noted that, unlike the prior art that adopts a separated anti-ship collision pier to avoid the impact energy generated by the ship collision being transmitted to the bridge itself, it adopts an independent anti-collision pier. When in a waterway environment with a large difference in high and low water levels, it is necessary to increase the pile foundation of the anti-collision pier, and to ensure the anti-collision strength, it is necessary to increase the pier body itself, which increases the amount of material used and the construction cost. In addition, the pier body itself is too heavy and easily causes the risk of unstable support. If the number of pile foundations is required to ensure the stability of the support, the construction cost is also increased. The present application solves the above-mentioned defects in the prior art by providing a hollow separated anti-ship collision pier based on the Bernoulli principle. The details are as follows:
[0032] The anti-ship collision body 10 includes an anti-collision part 110 and a pressing part 120. The pressing part 120 is fixed on the supporting structure 20 and is in a downwardly curved arc shape. The anti-collision part 110 is arranged on the pressing part 120. The top of the anti-collision part 110 is horizontally arranged. The interior of the anti-collision part 110 has a plurality of hollow grooves 111 arranged at intervals.
[0033] Specifically, the hollow separated anti-ship collision pier in the present application includes a supporting structure 20 and an anti-ship collision body 10, wherein the supporting structure 20 is used for installing the anti-ship collision body 10 and supporting the anti-ship collision body 10 to a sufficient height to adapt to the waterway environment when the difference between high and low water levels is large; and the anti-ship collision body 10 is the main body that withstands the impact of ships, and is usually arranged at intervals on the outside of the pier to protect the pier and prevent the pier from being affected by the pile foundation of the ship.
[0034] The anti-ship collision body 10 includes an anti-collision part 110 and a downward pressure part 120. The anti-collision part 110 is used to withstand the impact of the ship, and the downward pressure part 120 is used to connect the anti-collision part 110 and the supporting structure 20, so that the downward pressure part 120 is fixed on the supporting structure 20, and the anti-collision part 110 is arranged on the downward pressure part 120. Further, the downward pressure part 120 is in a downwardly curved arc shape, so that the bottom of the anti-ship collision body 10 is streamlined (similar to the belly of a fish). When the water flows through the downward pressure part 120, the water flow resistance is reduced due to the streamlined shape. Compared with the anti-collision part 110 with a horizontal arrangement at the top, the water flow velocity is increased. Based on the Bernoulli principle, the faster the flow velocity, the smaller the pressure. Therefore, compared with the top pressure of the anti-collision part 110, the pressure is smaller. In this way, the entire anti-ship collision body The anti-collision body 10 forms a downward pressure, and this downward pressure can improve the anti-collision performance of the separated anti-collision pier, and at the same time can reduce the deadweight of the anti-collision part 110, so as to reduce the material consumption and save construction costs. Therefore, the interior of the anti-collision part 110 has a plurality of hollow grooves 111 arranged at intervals, and the hollow grooves 111 may not be provided with a reinforced concrete structure to form a hollow structure, and the downward pressure part 120 and the anti-collision part 110 except the hollow grooves 111 are both reinforced concrete structures; in this way, in a waterway environment with a large difference in high and low water levels, it is usually necessary to increase the length of the pile foundation, and it is necessary to simultaneously increase the structural strength of the anti-ship collision body 10, which increases the material consumption, and the effect of the downward pressure part 120 can form a downward pressure based on the Bernoulli principle, while improving the performance of the separated anti-collision pier, while simultaneously reducing the deadweight of the anti-ship collision body 10, saving materials.
[0035] As a preferred embodiment of the utility model, the supporting structure 20 includes a group of vertical pile foundations 210 and a group of inclined pile foundations 220 which are arranged at intervals along the extension direction of the anti-ship collision body 10, and a plurality of the vertical pile foundations 210 are arranged at intervals along the extension direction of the anti-ship collision body 10, and the inclined pile foundation 220 group is arranged on a side close to the bridge pier; wherein each of the vertical pile foundations 210 groups includes two middle vertical pile foundations 210 which are relatively arranged along the width direction of the anti-ship collision body 10; the inclined pile foundation 220 group includes two inclined pile foundations 220 which are relatively arranged along the width direction of the anti-ship collision body 10, the pressing portion 120 is fixed to the top of the vertical pile foundations 210 and the inclined pile foundations 220, and the inclined pile foundations 220 are inclined from the top to the bottom toward the bridge pier.
[0036] It should be noted that the vertical pile foundation 210 is used to support the anti-ship collision body 10, and can support the anti-ship collision body 10 to a sufficient height, while ensuring sufficient structural strength to improve the vertical protection range to adapt to the situation where the high and low water level difference is large; and the inclined pile foundation 220 is arranged on the side close to the pier and inclined toward the pier. The inclined pile foundation 220 can decompose the horizontal pile foundation force into a shear force perpendicular to the inclined pile and an axial force parallel to the inclined pile according to different inclination angles; the inclined pile foundation 220 and the vertical Compared with pile foundation 210, the bending moment generated by inclined pile foundation 220 after being hit will be greatly reduced, and the axial component force generated can improve the shear bearing capacity and bending bearing capacity of the pile foundation, and make full use of the performance of concrete materials. Based on this principle, the grade or content of the longitudinal reinforcement and stirrups of the pile foundation can be reduced, materials can be saved, and the performance of existing materials can be fully utilized. Therefore, one group of the middle pile foundation groups is replaced with the inclined pile foundation 220 group, so as to ensure the structural strength, while the rest still adopt the vertical pile foundation 210 group to save construction costs at the same time.
[0037] As a preferred embodiment of the present invention, the horizontal cross-section of the end of the anti-collision portion 110 away from the bridge pier is triangular.
[0038] It should be noted that, when a conventional separated crash pier is hit by a ship with a bow structure, the bow structure will directly hit the front row collision surface, and the separated crash pier cannot be stressed as a whole, causing direct damage to the front row pile foundation, and the bearing capacity of the crash pier is greatly reduced. However, the present application sets the horizontal cross section of the end of the crash pier 110 away from the pier (i.e., the collision surface) in a triangular shape to form a front isolation zone, so that the bow will not directly contact the pile foundation, thereby improving the safety of the separated crash pier and making the structure more reasonable.
[0039] It is worth mentioning that the collision surface of the conventional separated crash pier structure adopts an arc-shaped structure. When a ship collides, the impact force perpendicular to the separated crash pier is relatively large. The collision surface adopts a triangular structure, which can reduce the impact force perpendicular to the separated crash pier through the inclined surface. At the same time, it can split the flood flow during flood discharge, which is beneficial to flood discharge.
[0040] As a preferred embodiment of the present invention, the end of the triangular section of the anti-collision portion 110 away from the bridge pier has an arc chamfer.
[0041] It is worth mentioning that the use of the arc chamfer design can make the contact smoother when a ship with a bow structure collides, thereby reducing damage to the ship.
[0042] As a preferred embodiment of the present invention, the plurality of hollow grooves 111 are distributed in a grid shape.
[0043] It is worth noting that the grid-like distribution here means that the hollow grooves 111 arranged at intervals along the horizontal direction and the hollow grooves 111 arranged at intervals along the longitudinal direction are all distributed in a grid-like manner, that is, a spatial grid-like distribution. In this way, the hollow grooves 111 inside the anti-collision part 110 can be evenly distributed to ensure balanced force at each location while saving materials and not affecting the structural strength.
[0044] Furthermore, the height of the arc top of the pressing down portion 120 is 1 m to 1.5 m.
[0045] It should be noted that the height of the pressing down portion 120 is related to the curvature of its pressing down arc segment. Considering that the curvature of the arc segment needs to be suitable for the water flow and improve the fluidity of the water flow, preferably, the height of the arc top of the pressing down portion 120 can be set to 1m~1.5m, and the specific value can be set by technicians in this field according to actual conditions.
[0046] Furthermore, the number of the vertical pile foundations 210 groups is three, and the three vertical pile foundations 210 groups are arranged at intervals along the extension direction of the anti-ship collision body 10 .
[0047] It should be understood that the number of the vertical pile foundation 210 groups can be determined according to the length of the anti-ship collision body 10 and the spacing distance between two adjacent pile foundation groups. Taking into account the overall force of the pile foundation and the construction cost, in a preferred embodiment, the number of the vertical pile foundation 210 groups can be set to three.
[0048] Furthermore, the angle between the axis of the inclined pile foundation 220 and the horizontal plane is 70° to 75°.
[0049] It should be noted that the present application is usually applied to waterway environments with a large difference in high and low water levels, and usually a larger pile body length needs to be set. The greater the inclination of the inclined pile foundation 220, the longer the pile body length that needs to be extended to the bearing layer will be, which is more expensive and reduces the structural stability. The smaller the inclination of the inclined pile foundation 220, the smaller the increase in shear bearing capacity and bending bearing capacity. Therefore, preferably, the angle between the axis line of the inclined pile foundation 220 and the horizontal plane is 70°~75°, and the specific angle can be set by technical personnel in this field according to actual conditions.
[0050] Furthermore, the pile diameters of the inclined pile foundation 220 and the vertical pile foundation 210 are both 1.8 m to 2 m.
[0051] It should be noted that the pile diameters of the inclined pile foundation 220 and the vertical pile foundation 210 depend on the load intensity that the pile foundation needs to withstand. The larger the pile diameter, the higher the load intensity that can be sustained. However, too large a pile diameter will lead to increased costs. In this application as a preferred embodiment, the pile diameters of the inclined pile foundation 220 and the vertical pile foundation 210 can be set to 1.8m to 2m, preferably, can be set to 1.8m, that is, a D180 pile foundation. Technical personnel in this field can make a choice according to actual needs.
[0052] Furthermore, it also includes a ladder 112, and the ladder 112 is fixed to an end of the anti-collision part 110 away from the bridge pier.
[0053] It can be understood that the ladder 112 is used for technicians to perform maintenance and management on the anti-ship collision body 10 in the later stage, so as to facilitate getting on and off the anti-ship collision body 10. It is fixed to the back of the anti-ship collision body 10, that is, the end of the anti-collision part 110 away from the bridge pier.
[0054] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle, characterized in that: It includes a supporting structure and an anti-ship collision body; wherein, The anti-ship collision body includes an anti-collision part and a downward pressing part. The downward pressing part is fixed on the supporting structure, and the downward pressing part is in an arc shape that bends downward. The anti-collision part is arranged on the downward pressing part, and the top of the anti-collision part is arranged horizontally. The interior of the anti-collision part has a plurality of hollow grooves arranged at intervals.
2. The hollow separated ship collision prevention pier based on Bernoulli principle according to claim 1 is characterized in that: The support structure includes a vertical pile foundation group and an inclined pile foundation group arranged at intervals along the extension direction of the anti-ship collision body. A plurality of the vertical pile foundation groups are arranged at intervals along the extension direction of the anti-ship collision body, and the inclined pile foundation group is arranged on a side close to the bridge pier; wherein, Each of the vertical pile foundation groups includes two middle vertical pile foundations arranged opposite to each other along the width direction of the anti-ship collision body; The inclined pile foundation group includes two inclined pile foundations arranged opposite to each other along the width direction of the anti-ship collision body, the pressing portion is fixed to the top of the vertical pile foundation and the inclined pile foundation, and the inclined pile foundation is inclined from the top to the bottom toward the bridge pier.
3. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 2 is characterized in that: The horizontal cross-section of the anti-collision portion at one end away from the bridge pier is triangular.
4. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 3 is characterized in that: An end of the triangular section of the anti-collision portion away from the bridge pier has an arc chamfer.
5. The hollow separated ship collision prevention pier based on Bernoulli principle according to claim 1 is characterized in that: The plurality of hollow grooves are distributed in a grid shape.
6. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 1 is characterized in that: The height of the arc top of the downward pressing part is 1m to 1.5m.
7. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 2 is characterized in that: The number of the vertical pile foundation groups is three, and the three vertical pile foundation groups are arranged at intervals along the extension direction of the anti-ship collision body.
8. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 2 is characterized in that: The angle between the axis of the inclined pile foundation and the horizontal plane is 70° to 75°.
9. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 8 is characterized in that: The diameters of the inclined pile foundation and the vertical pile foundation are both 1.8m to 2m.
10. The hollow, separated, ship-collision-proof bridge pier based on the Bernoulli principle according to claim 2 is characterized in that: It also includes a ladder, which is fixed to one end of the anti-collision part away from the bridge pier.