Full-assembly type replaceable mountainous area pier anti-impact protection device

Abstract

The utility model provides a full-assembly type replaceable impact-resistant protective device for piers in mountainous areas, belongs to the technical field of impact resistance of piers, and solves the problems of inconvenience in assembly and disassembly and insufficient impact-resistant protective capability in the prior art. The device comprises a rigid member and a flexible member. The rigid component is an internal steel shell and a UHPC shell, the flexible component is made of a polymer elastic material, and the whole spring device is a rigid and flexible component. According to the pier protection device, rigid components and flexible components are alternately combined to form an organic whole, multi-layer protection is provided for a pier, and the pier protection device sequentially comprises a macromolecule elastic material, an inner steel shell, a whole spring device and a UHPC shell from inside to outside. The UHPC shell is arranged to resist external impact, so that the impact energy exchange efficiency is improved while internal devices are protected; the high-molecular elastic material protects the bridge pier, and concrete is prevented from being crushed by overlarge impact force; the whole pier protection device is in a detachable connection mode, so that the pier protection device is convenient and rapid to install and replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge pier anti -impact technical field, concretely relates to a full assembly formula's replaceable mountainous area bridge pier anti -impact protection device. BACKGROUND

[0002] The normal service guarantee of mountainous area bridge under the impact of rolling stone and debris flow is very important, among them, the safety guarantee of bridge pier is the most important, if it has obvious damage, will produce the major threat to the stability and safety of the whole bridge structure. Bridge pier protection device refers to the buffer protection device installed at the approach of the lower part of the bridge pier and the pile cap to prevent the damage of rolling stone and debris flow impact on the bridge pier, so as to avoid the direct impact on the bridge pier. Due to the limitation of topography, the highway or railway route in western China often uses bridge to directly cross the valley. With the continuous development of western development, the research on the protection of bridge pier from rolling stone and debris flow impact becomes an important topic.

[0003] The rolling stone disaster in mountainous area has many aspects and complex trajectory, combined with high mountains and steep slopes, so the active reinforcement, wall / net path interception technology and other technologies have problems such as inaccurate site selection and difficult construction in bridge pier protection. Correspondingly, close-fitting protective packaging has been paid more and more attention due to its advantages such as clear protection position and controllable engineering quantity. At present, the most common method in engineering is to wrap the bridge pier with steel plate to resist the impact of rolling stone and debris flow. However, practice shows that this structure cannot buffer energy consumption, and the wrapped concrete is often severely cracked, so the protection effect is poor. Another EPS wrapping buffer technology is also limited in its application due to its poor energy consumption, easy aging and difficult construction. Therefore, a bridge pier protection device with strong protection, long service life and easy installation should be designed.

[0004] The patent with publication number CN211772781U discloses a bridge pier protection device, which comprises a sleeve and a filling body. The sleeve comprises at least two sleeve pieces, which are connected by fasteners. The filling body is arranged between the sleeve and the bridge pier. The sleeve pieces are mainly made of resin-based fiber reinforced material, and the filling body is filled with high-strength polyurethane elastomer, thereby forming an effective anti-impact shock-absorbing bridge pier protection device. This device needs to be made on site, and the filling quality of the internal filling material is not easy to guarantee.

[0005] The patent with publication number CN220013367U discloses a bridge pier anti-collision device, which comprises first, second and third protection systems. The third protection system is a rigid retaining wall that surrounds and closely adheres to the bridge pier. The second protection system comprises a plurality of damping energy dissipation protection cylinders, which are arranged in multiple layers along the longitudinal direction of the bridge pier. Each layer is arranged at equal intervals around the bridge pier. The first protection system is provided with a plurality of anti-collision rods. The first and second protection systems of this device are completely exposed, and are easily blocked by sand and stone when the debris flow comes.

[0006] In order to improve the installation convenience, performance stability and long-term use of the bridge pier protection device, the utility model provides a full assembly type replaceable mountainous area bridge pier impact protection device, which meets the structural design requirements and provides all-round protection for the bridge pier, improves the service life and safety of the bridge pier. Utility model content

[0007] The utility model discloses a full assembly type replaceable mountainous area bridge pier impact protection device, which is installed in the middle and lower part of the bridge pier under the condition of reducing the construction and installation difficulty, improves the impact resistance of the bridge pier, can help the bridge pier resist and consume part of the impact energy when disasters such as mountainous area rockfall and debris flow occur, avoids the damage of the bridge pier due to the impact, and provides basic safety guarantee for the whole bridge, and is convenient to check, repair and replace when the bridge pier protection device is damaged and aged.

[0008] In order to realize the utility model purpose, the technical scheme that adopts is as follows: a full assembly type replaceable mountainous area bridge pier impact protection device, which comprises a high polymer elastic material installed on the outer side of the bridge pier, an internal steel shell sleeved on the outer side of the high polymer elastic material, a spring device unit installed on the outer side of the internal steel shell, an H-shaped rubber connected to the inner surface of the spring unit and the outer surface of the internal steel shell, and a UHPC shell installed on the outer side of the spring device unit.

[0009] Further, the high polymer elastic material is arranged between the internal steel shell and the outer surface of the bridge pier and is located at the innermost side of the whole device.

[0010] Further, the internal steel shell is a high-strength steel component, is smooth on the side close to the bridge pier and is closely attached to the high polymer elastic material, so that the buffering capacity of the material can be effectively exerted; a plurality of spring placing holes are formed in the outer side of the internal steel shell and are used for installing the coil springs; and the two semicircular internal steel shells are fastened to the outer side of the high polymer elastic material through first bolts.

[0011] Further, the spring device unit is installed on the outer side of the internal steel shell and is composed of an arc-shaped steel plate, a force transmission short column, a coil spring and an H-shaped rubber; the force transmission short column is bolted to the arc-shaped steel plate through second bolts and has a thread on one side matched with the second bolt; the force transmission short column connects the coil spring and abuts the coil spring in the spring placing hole on the internal steel shell; and the H-shaped rubber is connected to the inner surface of the arc-shaped steel plate and the outer surface of the internal steel shell.

[0012] Further, the UHPC shell is two semicircular shells, which are sleeved on the outer side of the spring device, and a corrugated pipe is pre-embedded when pouring, and the two semicircular UHPC shells are connected together through the UHPC shell pin bolt; the UHPC shell pin bolt is composed of a pin bolt steel rod, a pin bolt buckle and a third bolt; the pin bolt steel rod is slightly higher than the UHPC shell, and a screw hole matched with the third bolt is formed on the pin bolt steel rod; the pin bolt buckle is sleeved on the pin bolt steel rod and limits the UHPC shell.

[0013] Further, the first bolt, the second bolt and the third bolt are high-strength bolts.

[0014] Further, the internal components of the pier protection device are arranged in a circular ring, and the UHPC shell, the spring device, the internal steel shell and the high polymer elastic material are connected in series to consume impact energy and protect the internal pier in multiple layers.

[0015] The beneficial effects of the utility model are:

[0016] (1) The device has strong impact resistance. The utility model is composed of multiple layers of rigid and flexible protection, and impact energy is consumed in multiple stages. The UHPC shell and the internal steel shell are arranged in two layers of rigid protection, and the arrangement is one rigid layer and one flexible layer, which improves the impact resistance efficiency.

[0017] (2) The device can absorb impact energy to the maximum extent. When impact occurs, the impact resistance of the pier can be significantly improved, and the impact force can be greatly buffered while the safety performance of the pier is significantly improved. When unexpected impact occurs, the spring, rubber and high polymer elastic material are extruded, impact energy can be fully dissipated, the impact force can be dispersed and conducted, the energy dissipation efficiency can be significantly improved, the pier impact protection device of the utility model can form a complete energy dissipation protection structure by mutual coordination, the energy exchange between the impact object and the pier can be significantly reduced, and the pier structure can be protected to the maximum extent.

[0018] (3) The pier is less damaged and well protected. The utility model does not need to punch holes in the pier and its periphery, and the flexible material directly contacts the pier. When impact energy pours down, it will not cause excessive pressure on the pier to crush the concrete on the pier.

[0019] (4) Easy to disassemble. The pier protection device is easy to disassemble. After the UHPC shell is removed, only the bolts at the connection of the two internal steel shells need to be removed to disassemble the entire device, which is convenient for replacement and maintenance after the function is damaged. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the present application. These drawings are included herewith and constitute a part of this specification. In the drawings:

[0021] Figure 1 It is a top view of a full-assembled replaceable mountain bridge pier impact protection device;

[0022] Figure 2 It is an internal schematic diagram of the device;

[0023] Figure 3 It is an exploded view of the structure of the device;

[0024] Figure 4 It is an exploded view of the protective steel shell;

[0025] Figure 5 It is an installation schematic diagram of the protective steel shell and spring;

[0026] Figure 6 It is a schematic diagram of the overall structure of the spring device;

[0027] Figure 7 It is an exploded view of the spring unit;

[0028] Figure 8 It is a top view schematic diagram of the spring unit;

[0029] Figure 9 It is an exploded view of the UHPC shell;

[0030] Figure 10 It is a pin bolt schematic diagram of the UHPC shell;

[0031] Figure 11 It is an installation schematic diagram of the double-pier bridge protection sleeve;

[0032] Markings in the drawings and corresponding component names:

[0033] 1, high molecular elastic material; 2, internal steel shell; 201, spring placement hole; 202, first bolt; 203, internal steel shell bolt hole; 3, spring device whole; 4, spring device unit; 401, arc-shaped steel plate; 4011, arc-shaped steel plate upper bolt hole; 402, second bolt; 403, force transmission short column; 4031, force transmission short column upper bolt hole; 404, spiral spring; 405, H-shaped rubber block; 5, UHPC shell; 501, UHPC shell hole; 502, UHPC shell pin bolt; 5021, pin bolt steel rod; 5022, pin bolt buckle; 5023, third bolt; 6, bridge pier protection device; DETAILED DESCRIPTION

[0034] The utility model makes further detailed description below combining with the drawings and implementation. It can be understood that the specific implementation described here is only used for explaining relevant content, and is not limited to the utility model. In addition, it needs to be explained that only the part related to the utility model is shown in the drawings for the convenience of description.

[0035] It needs to be explained that the implementation in the utility model and the features in the implementation can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the implementation.

[0036] As Figure 1 , Figure 2 , Figure 3 The utility model provides a kind of full assembly formula's replaceable mountainous area pier impact protection device, including rigid component and flexible component.The rigid component includes internal steel shell 2 and UHPC shell 5;The flexible component is high molecular elastomer 1;And spring device whole 3 is the component with rigidity and flexibility;The pier protection device is alternately combined to form organic whole by rigid component and flexible component, and it provides multilayer protection for pier, and it is high molecular elastomer 1, internal steel shell 2, spring device whole 3 and UHPC shell 5 in turn from inside to outside.

[0037] As Figure 3 Indicated, high molecular elastomer 1 has excellent buffering performance and certain recovery capacity, and in actual installation process, it can also be replaced by rubber and similar material for the convenience of material, it is as the first part of contact with pier, can consume external impact energy for pier, is the last barrier of pier.

[0038] As Figure 1 , Figure 2 , Figure 4 Indicated, internal steel shell 2 is connected by first bolt 202 by two semicircular steel shells, and it is arranged on the outside of high molecular elastomer 1, can pass to internal high molecular elastomer 1 with more uniform transmission of external impact energy, avoid stress too concentrated, give full play to the performance of material;Internal steel shell 2 is arranged in the inside of spring device whole 3, and it provides attachment surface for spring device whole 3.

[0039] As Figure 5 Indicated, spring placing hole 201 and internal steel shell bolt hole 203 are opened on internal steel shell 2, and two internal steel shells 2 are fastened with bolt when installing, then spiral spring 404 is placed in internal steel shell bolt hole 203, and force transmission short column 403 connects spiral spring 4 and compresses spring.

[0040] As Figure 1 , Figure 2 , Figures 6 to 8As shown, the spring device whole 3 is combined by several spring device units 4, two H-shaped rubbers 405 are arranged on each spring device unit 4, the other contact surface of the rubber is connected to the inner steel shell 2, a plurality of arc-shaped steel plate bolt holes 4011 are formed in the arc-shaped steel plate 403, the second bolt 402 is used to fasten the force transmission short column 403 on the arc-shaped steel plate 403 during subsequent installation, the force transmission short column 403 has a force transmission short column bolt hole 4031, one end of the spiral spring 404 is connected with the force transmission short column 403, and the whole is placed in the spring placing hole 201 on the inner steel shell 2.

[0041] As shown in the description, Figure 9 , Figure 10 As shown, the UHPC shell 5 is a semicircular shell, UHPC shell holes 501 are pre-buried on the UHPC shell 5, and UHPC shell pins 502 are installed, the pin is composed of a pin steel rod 5021 and a pin buckle 5022, the pin buckle 5022 is limited on the top of the UHPC shell 5 by the third bolt, and the buckle has a limiting hole, which limits the relative movement of the UHPC shell.

[0042] As shown in the description, Figure 11 As shown, the pier protection device 6 is an independent individual, which is suitable for different pier numbers, and the example in the figure is a double-pier bridge.

[0043] It should be noted that the bolts mentioned in the utility model are all friction type high-strength bolts, so as to further improve the overall stability of the connecting structure.

[0044] The working principle of the utility model is that: the bridge pier protection device comprises a high molecular elastic material 1, an inner steel shell 2, a spring device whole 3 and a UHPC shell 5, when the device is impacted by falling stones and debris flow, the UHPC shell 5 contacts the impact object, the high-strength characteristics of UHPC are used to reduce the damage of impact force to the internal device, the two UHPC shells 5 can move relatively and disperse the impact force to each spring device unit 4, at this time, the spiral spring 404 and the H-shaped rubber 405 cooperate to consume the energy transmitted, and the remaining energy is transmitted to the inner steel shell 2 to share the high molecular elastic material 1. After the impact energy is consumed by each series component, it cannot cause fatal threat to the bridge pier, greatly improves the service life of the bridge pier, and effectively reduces the maintenance cost.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or structure.

[0046] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features.

[0047] Those skilled in the art will understand that the above embodiments are only for the purpose of clearly illustrating the present application, and do not limit the scope of the present application. Based on the above disclosure, other changes or modifications can be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.

Claims

1. A full-assembled replaceable mountain bridge pier impact protection device, characterized in that, Polymer elastic material (1) is installed on the outer surface of the pier, the outer surface of the internal steel shell (2) is provided with spring device whole (3), the spring device whole (3) is divided into several spring device units (4), each spring device unit (4) is connected by arc-shaped steel plate (401) connecting force transmission short column (403) and two pieces of H-shaped rubber (405), force transmission short column (403) connects helical spring (404), the outer surface of spring device whole (3) is detachably provided with UHPC shell (5).

2. The full-assembled replaceable mountainous pier impact protection device according to claim 1, wherein, The polymer elastic material (1) is closely attached to the pier and is clamped between the pier and the internal steel shell (2).

3. The full-assembled replaceable mountainous pier impact protection device according to claim 1, wherein, The outer wall of the internal steel shell (2) is provided with spring placing hole (201) for placing helical spring (404).

4. The prefabricated replaceable impact protection device for mountainous bridge piers according to claim 1, characterized in that, The spring device whole (3) is composed of several spring device units (4), and the number of spring device units can be determined according to actual conditions.

5. The prefabricated replaceable impact protection device for mountainous bridge piers according to claim 4, characterized in that, The spring device unit (4) is detachably connected by arc-shaped steel plate (401) connecting force transmission short column (403), helical spring (404) is placed in spring placing hole (201) on the outer wall of internal steel shell (2), and H-shaped rubber (405) is connected to the inner surface of arc-shaped steel plate (401) at one end and to the outer surface of internal steel shell (2) at the other end.

6. The prefabricated replaceable mountain pier impact protection device according to claim 1, characterized in that, The UHPC shell (5) is two semicircular shells, which are connected together by UHPC shell pin bolt (502) during installation.

7. The prefabricated replaceable impact protection device for mountainous bridge piers according to claim 6, characterized in that, The UHPC shell pin bolt (502) is detachably connected by pin bolt steel rod (5021) and pin bolt buckle (5022), and the pin bolt buckle (5022) can limit the UHPC shell (5).

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