Highway anti-collision column device and construction method thereof
阅读说明：本技术 一种公路防撞柱装置及其施工方法 (Highway anti-collision column device and construction method thereof ) 是由 李扬 张力文 于 2019-10-18 设计创作，主要内容包括：本发明提出了一种公路防撞柱装置,包括防撞柱主体结构,所述防撞柱主体结构由内层钢管及灌注在内层钢管内的泡沫混凝土构成,内层钢管外包裹有吸能层,吸能层设置外层钢管。该防撞柱的施工工序为先在内层钢管中灌注泡沫混凝土,待混凝土达到强度后再在外层安装固定六边形蜂窝状结构为的聚氨酯蜂窝铝,最后固定外层钢管即可。本发明的公路防撞柱,包括防撞柱主体结构和包围在防撞柱主体结构外侧的吸能层,通过设置聚氨酯蜂窝铝六边形蜂窝状结构吸能层,在防撞柱受到撞击后,吸能材料吸收和耗散部分动能,剩余部分的动能传递到防撞柱主体结构,再次吸收和耗散部分动能,由此实现减少撞击时防护栏承受的撞击力,减少对公路防护栏的损坏。(The invention provides a highway anti-collision column device which comprises an anti-collision column main body structure, wherein the anti-collision column main body structure is composed of an inner layer steel pipe and foam concrete filled in the inner layer steel pipe, an energy absorption layer is wrapped outside the inner layer steel pipe, and an outer layer steel pipe is arranged on the energy absorption layer. The construction process of the anti-collision column comprises the steps of firstly pouring foam concrete into the inner layer steel pipe, installing and fixing polyurethane honeycomb aluminum with a hexagonal honeycomb structure on the outer layer after the concrete reaches the strength, and finally fixing the outer layer steel pipe. The highway crash-proof column comprises a crash-proof column main body structure and an energy absorption layer surrounding the outer side of the crash-proof column main body structure, wherein the energy absorption layer with the polyurethane honeycomb aluminum hexagonal honeycomb structure is arranged, after the crash-proof column is impacted, the energy absorption material absorbs and dissipates part of kinetic energy, and the rest part of kinetic energy is transmitted to the crash-proof column main body structure and absorbs and dissipates part of kinetic energy again, so that the impact force borne by the crash-proof column during impact is reduced, and the damage to the highway crash-proof column is reduced.)
1. The highway anti-collision column device is characterized by comprising an anti-collision column, wherein the anti-collision column is composed of an inner steel pipe and foam concrete filled in the inner steel pipe, an energy absorption layer wraps the inner steel pipe, and an outer steel pipe is arranged on the energy absorption layer.
2. A road crash post assembly as set forth in claim 1 wherein said energy absorbing layer is polyurethane honeycomb aluminum of hexagonal honeycomb structure.
3. A road crash post assembly as set forth in claim 1 wherein said inner and outer steel tubes are each made of steel plate coated with polyurea material.
4. The device for preventing collision of road post according to claim 1, wherein the inner diameter of the inner steel tube is 300-380 mm, the inner diameter of the outer steel tube is 400-480 mm, and the thickness of the inner steel tube and the outer steel tube is 1.5-3 mm.
5. A road post bump guard according to claim 1 in which the guard rail is connected to the post via a rigid and resilient bumper comprising two parallel steel plates and a bent iron strip disposed between the two steel plates.
6. A road crash post assembly as set forth in claim 5 wherein said guardrail plate is coated with a plastic-sprayed layer or a zinc-plated layer.
7. A construction method of a road anti-collision column device is characterized by comprising the following steps:
A. preparing an anti-collision column, firstly pouring foam concrete into an inner steel pipe, installing and fixing hexagonal honeycomb aluminum between an inner layer and an outer layer after the concrete reaches the strength, adopting a welding mode for the fixed connection between a hexagonal honeycomb aluminum structure and an inner steel plate and an outer steel plate, filling high-molecular polymer polyurethane into the hexagonal honeycomb aluminum to form hexagonal polyurethane honeycomb aluminum, and adopting polyurea to spray the polyurea on the periphery of the inner steel pipe;
B、driving the anti-collision column into the foundation;
C. and a protective barrier plate is arranged between the two anti-collision columns and is connected with the anti-collision columns through rigid and elastic buffer blocks.
Technical Field
The invention relates to a road anti-collision column device.
Background
With the rapid development of the transportation industry and the economic construction, the mass construction of highways and the vehicle holding amount are increasing, and the probability of an accident in which a vehicle hits a roadside guard rail due to various reasons of drivers is also increasing. The crash of the vehicle on the guard rail not only easily causes tragedies such as vehicle damage, death and the like, but also reduces the bearing capacity and durability of the highway structure in the design life to a certain extent, and the safety and durability of the highway can be directly influenced due to the overlarge displacement of the guard rail caused by the crash, and even the whole guard rail structure falls off in severe cases. It becomes very important to design a new type of highway crash barrier.
At present, a common treatment method for a protective structure of a highway guardrail is to arrange galvanized steel plate protective barriers on two sides of a highway and at a central separation strip to reduce the injury to people in a vehicle during collision. However, the conventional galvanized steel protective guard has the following problems: 1. the automobile is easy to scratch when the automobile is slightly impacted; 2. The production cost of the galvanized steel plate protective fence is higher; 3. the guard rail is not easy to replace after being impacted.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a road anti-collision post device which can reduce the impact force borne by a guard rail plate during collision and reduce the damage to the guard rail plate and a driver.
Based on the structure, the invention provides a highway anti-collision column device, which comprises an anti-collision column and a guardrail plate arranged on the anti-collision column, and is characterized in that the anti-collision column is composed of an inner layer steel pipe and foam concrete filled in the inner layer steel pipe, an energy absorption layer with a hexagonal honeycomb structure is wrapped outside the inner layer steel pipe, and an outer layer steel pipe is arranged outside an energy absorption material with the hexagonal honeycomb structure.
Furthermore, the energy absorption layer of the hexagonal honeycomb structure is made of polyurethane honeycomb aluminum, and the hexagonal honeycomb structure is mainly formed by filling high-molecular elastic polymer polyurethane materials into the hexagonal honeycomb aluminum to form the energy absorption layer of the structure.
Further, the inner layer steel pipe and the outer layer steel pipe are both made of steel plates sprayed with polyurea materials.
Furthermore, the guardrail plate is connected with the anti-collision column through a rigid elastic buffer block, and the rigid elastic buffer block comprises two steel plates which are arranged in parallel and a bent iron strip which is arranged between the two steel plates.
Furthermore, the surface layer of the guardrail plate is provided with a plastic spraying layer or a zinc coating.
Further, the construction method of the road anti-collision column device is characterized by comprising the following steps:
A. preparing an anti-collision column, firstly pouring foam concrete into an inner steel pipe, installing and fixing hexagonal honeycomb aluminum between an inner layer and an outer layer after the concrete reaches the strength, adopting a welding mode for the fixed connection between a hexagonal honeycomb aluminum structure and an inner steel plate and an outer steel plate, filling high-molecular polymer polyurethane into the hexagonal honeycomb aluminum to form hexagonal polyurethane honeycomb aluminum, and adopting polyurea to spray the polyurea on the periphery of the inner steel pipe;
B、driving the anti-collision column into the foundation;
C. a guard rail plate is arranged between the two anti-collision posts and is connected with the anti-collision posts through rigid and elastic buffer blocks。
The highway crash-proof column comprises a crash-proof column main body structure and an energy absorption layer surrounding the outer side of the crash-proof column main body structure, wherein the energy absorption layer with the polyurethane honeycomb aluminum hexagonal honeycomb structure is arranged, after the crash-proof column is impacted, the energy absorption material absorbs and dissipates part of kinetic energy, and the rest part of kinetic energy is transmitted to the crash-proof column main body structure and absorbs and dissipates part of kinetic energy again, so that the impact force borne by the crash-proof column during impact is reduced, and the damage to the highway crash-proof column is reduced. The corrosion resistance and durability of the anti-collision column are greatly improved by spraying the polyurea material outside the steel pipe, and meanwhile, the performance of the anti-collision column is greatly improved due to the good impact resistance of the polyurea material. The anticollision post can realize prefabricating in the mill, then directly squeezes into the ground in the scene, has shortened the time limit for a project greatly.
Drawings
Fig. 1 is a schematic structural view of a crash column according to an embodiment of the present invention.
Fig. 2 is a schematic view of the connection of a crash post and a guardrail panel according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of the rigid-elastic buffer block.
Fig. 4 is a schematic structural view of the rigid-elastic buffer block.
Description of reference numerals: 1. an impact post; 2. spraying a polyurea steel plate; 3. an energy absorbing layer; 4. the concrete comprises foam concrete, 5 parts of a protective barrier plate, 6 parts of a rigid and elastic buffer block, 7 parts of a steel plate and 8 parts of a bent iron strip.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or welded.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention provides a highway anti-collision column device which comprises an anti-collision column main body and an
According to one embodiment of the invention, the inner diameter of the inner layer steel pipe is 300-380 mm, the inner diameter of the outer layer steel pipe is 400-480 mm, and the thickness of the inner layer steel pipe and the thickness of the outer layer steel pipe are 1.5-3 mm.
The guardrail plate 5 is connected with the
The manufacturing process of the anti-collision column comprises the steps of firstly pouring foam concrete into an inner steel pipe between the inner part and the outer part of the anti-collision layer, then installing and fixing hexagonal honeycomb aluminum between the inner layer and the outer layer after the concrete reaches the strength, adopting a welding mode for the fixed connection mode between the hexagonal honeycomb aluminum structure and an inner layer steel plate and adopting a high polymer polyurethane to fill in the hexagonal honeycomb aluminum so as to form hexagonal polyurethane honeycomb aluminum, and adopting polyurea spraying around the steel plate after all steps of manufacturing.
The specific installation steps are as follows:
1. the most basic work of installing the anti-collision column through construction lofting is fixing the position of the column, measuring and then determining the position of the column so as to pile. The position of pile driving needs to avoid public facilities such as underground optical cables.
2. Whether the soil quality of the pile driving position is suitable for pouring conditions needs to be determined before pile driving of the anti-collision column is carried out, and otherwise, the protection effect of the anti-collision column is influenced. It is also necessary to check whether the pile driving position is parallel to the subgrade. The distance between the
3. Seamless concatenation needs to be accomplished to the concatenation of
When the anti-collision component designed by the invention is impacted by an automobile, firstly, the impact force of the automobile mainly acts on the anti-collision guardrail plate and is then transmitted to the rigid elastic buffer block, and the rigid elastic buffer block axially deforms under the action of external force so as to absorb part of the impact energy of the automobile. Secondly, the rigid elastic buffer block transmits impact force to the outer steel pipe to bear force, partial energy is dissipated through the
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
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