A corrugated beam guardrail structure for separating bending and shear forces and its layout method

Abstract

A corrugated beam guardrail structure for separating bending and shear forces and a method for arranging the same. By setting a split combined column structure, the original corrugated beam column is disconnected at the point where it contacts the ground, and an upper column above the ground is retained, while a lower column below the ground is moved back a certain distance, which can safely avoid a restricted area for piling. The upper column can withstand the thrust of a car collision, and the lower column can withstand the thrust of a car collision and the bending moment transmitted therefrom. The structure is suitable for arranging the end of the corrugated beam guardrail in a manner of extending outward at a certain slope to form a continuous and neat collision surface.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated beam guardrails on the roadside of highways, and in particular to a corrugated beam guardrail structure for separating bending and shear forces and a method for laying out the structure. Background Art

[0002] Highway guardrail is a common traffic safety facility. In order to prevent out-of-control vehicles from running off the road and causing safety accidents, according to different roadside conditions or driving safety environments, it can be determined whether to set up a corrugated beam guardrail according to the usual roadside highway corrugated beam guardrail setting principles. The corrugated beam guardrail setting principles include several situations such as roadside corrugated guardrails must be set, roadside corrugated guardrails should be set, and roadside corrugated guardrails can be set. When the highway guardrail is not set continuously, guardrail ends will appear, that is, a section of corrugated beam guardrail has both a beginning and an end, the beginning is the upstream end facing the direction of traffic flow, and the end is the downstream end facing the direction of traffic flow. Generally speaking, the upstream end is an obstacle that suddenly appears from the roadside, and its harmfulness is much higher than the downstream end. In recent years, many vehicles have collided with the end of the corrugated beam guardrail in various places, and the body of the vehicle has been pierced, resulting in casualties of the driver and passengers in the car, aggravating the consequences of the accident. The end of the corrugated beam guardrail can be extended outward at a certain slope to improve the safety protection level of the guardrail end, but there are often some construction areas on the roadside where piles cannot be driven, such as the roadside drainage ditch. In this regard, the inventors have studied the road conditions of the ends of the corrugated beam guardrails, and in particular, have made innovative designs for the corrugated beam guardrail structures in the roadside drainage ditch areas so that the ends of the corrugated beam guardrails can be arranged in a manner that extends outward at a certain slope, thereby forming a technical concept and completing the present invention. Summary of the invention

[0003] In view of the defects or shortcomings in the prior art, the present invention provides a corrugated beam guardrail structure for separating bending and shear forces and a method for arranging the same.

[0004] The technical solution of the present invention is as follows:

[0005] A corrugated beam guardrail structure for separating bending and shear forces, characterized in that it comprises a split modular column structure, the split modular column structure comprises an upper column on the near-road side and a lower column on the far-road side supported by connecting the two ends of a steel member, the upper portion of the inner side surface of the upper column on the near-road side is connected to the corrugated beam via an anti-obstruction block, the bottom of the upper column on the near-road side is connected to a pile-free support seat, and the bottom of the lower column on the far-road side extends deep into the ground to form a pile structure.

[0006] The pile-free support seat includes a steel cover plate and a column base hinged steel plate erected thereon, the bottom edge of the column base hinged steel plate is welded to the steel cover plate by a weld, and the column base hinged steel plate is connected to the bottom of the upper column on the side close to the carriageway by a reaming hole and a pin shaft.

[0007] An upper strip steel plate is welded to the upper end of the connecting steel member, and a lower strip steel plate is welded to the lower end. The upper strip steel plate is fixed to the upper outer side surface of the upper column on the near-road side by an upper bolt array, and the lower strip steel plate is fixed to the upper inner side surface of the lower column on the far-road side by a lower bolt array.

[0008] The anti-blocking block is a variable width anti-blocking block.

[0009] The steel cover plate is used as a replacement for the common cover plate of the roadside drainage ditch and covers the area where pile driving is not possible.

[0010] A method for laying out a separated curved and shear-loaded corrugated beam guardrail structure, characterized in that, when encountering a construction area where piling cannot be driven, the above-mentioned separated curved and shear-loaded corrugated beam guardrail structure is used to separately determine a piling construction area for the lower column on the far road side, and to determine a non-pile support position for the upper column on the near road side in the construction area where piling cannot be driven; when the end of the corrugated beam guardrail is extended outward at a certain slope, the width of the anti-blocking block is reduced one by one, the width of the connecting steel member is reduced one by one, or the piling position of the lower column is changed one by one to meet the requirement of the certain slope, so that the collision surface of the end of the corrugated beam guardrail is gradually opened against the direction of traffic flow.

[0011] The height of the steel cover plate is consistent with that of the adjacent ordinary cover plate and has an embedded function with its surrounding boundaries.

[0012] The impact surface of the end of the corrugated beam guardrail is continuous and neat.

[0013] The upper column on the near-carriageway side is used to bear the thrust of the car collision, and the lower column on the far-carriageway side is used to bear the thrust of the car collision and the bending moment transmitted therefrom.

[0014] The technical effects of the present invention are as follows: the present invention is a corrugated beam guardrail structure for separating bending and shear forces and a method for laying out the same. By setting a split combined column structure, it is equivalent to disconnecting the original corrugated beam column at the point of contact with the ground, retaining the upper column above the ground, and moving the lower column below the ground back a certain distance, which can safely avoid the restricted area for piling. The upper column can withstand the thrust of a car collision, and the lower column can withstand the thrust of a car collision and the bending moment transmitted therefrom. It is suitable for laying out the end of the corrugated beam guardrail in a manner of outward extension at a certain slope to form a continuous and neat collision surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a corrugated beam guardrail structure for separating bending and shear forces according to the present invention.

[0016] Figure 2 It is a schematic diagram of a method for laying out a corrugated beam guardrail structure for separating bending and shear forces according to the present invention. Figure 2Different widths of barrier blocks are used to achieve the outward slope of the end of the corrugated beam guardrail.

[0017] Figure 3 The present invention is a schematic diagram of a method for laying out a corrugated beam guardrail structure that separates bending and shear forces based on a variable width column support arrangement scheme. Figure 3 Different widths of connecting steel components are used to achieve the outward slope of the end of the corrugated beam guardrail. Figure 3 The medial-lateral abduction slope is 1:17. Figure 3 The driving direction, ditch, ditch crossing section, etc. are shown in the figure.

[0018] Figure 4 The present invention is a schematic diagram of a method for laying out a corrugated beam guardrail structure that separates bending and shear forces based on an equal-width column support arrangement scheme. Figure 4 The lower column is moved outward to achieve the outward slope of the end of the corrugated beam guardrail. Figure 4 The medial-lateral abduction slope is 1:17. Figure 4 The driving direction, standard section, ditch, ditch crossing section, etc. are indicated in it.

[0019] The reference numerals are listed as follows: 1-areas where piling is not allowed (for example, roadside ditches used for drainage, etc., the ditch or the ditch cover are not areas for piling); 2-steel cover (replacing ordinary cover such as cement cover); 3-weld; 4-hinged steel plate at the column base; 5-reamed hole; 6-pin shaft; 7-upper column on the road side close to the carriageway; 8-upper strip steel plate; 9-upper bolt array; 10-variable width barrier block; 11-corrugated beam; 12-connecting steel member; 13-lower strip steel plate; 14-lower bolt array; 15-lower column on the road side far from the carriageway; 16-ground; 17-standard column; 18-first width barrier block; 19-second width barrier block; 20-third width barrier block; 21-fourth width barrier block; 22-collision surface. DETAILED DESCRIPTION

[0020] Below is the attached figure ( Figure 1-Figure 4 ) and Examples illustrate the present invention.

[0021] Figure 1 It is a schematic diagram of a corrugated beam guardrail structure for separating bending and shear forces according to the present invention. Figure 2 It is a schematic diagram of a method for laying out a corrugated beam guardrail structure for separating bending and shear forces according to the present invention. Figure 3 The present invention is a schematic diagram of a method for laying out a corrugated beam guardrail structure that separates bending and shear forces based on a variable width column support arrangement scheme. Figure 4 This is a schematic diagram of a method for laying out a corrugated beam guardrail structure that separates bending and shear forces based on an equal-width column support arrangement scheme. Figures 1 to 4As shown, a wave beam guardrail structure for separating bending and shear forces includes a split combined column structure, the split combined column structure includes an upper column 7 (referred to as the upper column) on the near-road side and a lower column 15 (referred to as the lower column) on the far-road side supported by connecting the two ends of a steel member 12, the upper inner side surface of the upper column 7 on the near-road side is connected to the wave beam 11 through an anti-blocking block (the anti-blocking block can be a variable width anti-blocking block 10), the bottom of the upper column 7 on the near-road side is connected to a pile-free support seat, and the bottom of the lower column 15 on the far-road side is deep below the ground to form a pile structure. The pile-free support seat includes a steel cover plate 2 and a column foot hinged steel plate 4 erected thereon, the bottom edge of the column foot hinged steel plate 4 is welded to the steel cover plate 2 through a weld 3, and the column foot hinged steel plate 4 is connected to the bottom of the upper column 7 on the near-road side through a reaming hole 5 and a pin 6.

[0022] The upper end of the connecting steel member 12 is welded with an upper strip steel plate 8, and the lower end is welded with a lower strip steel plate 13. The upper strip steel plate 8 is fixed to the upper outer surface of the upper column 7 on the near-road side through an upper bolt array 9, and the lower strip steel plate 13 is fixed to the upper inner surface of the lower column 15 on the far-road side through a lower bolt array 14. The anti-blocking block is a variable width anti-blocking block 10. The steel cover plate 2 is used as a replacement for the ordinary cover plate of the roadside drainage ditch to cover the area 1 where piling cannot be carried out.

[0023] A method for laying out a separate curved and shear-loaded corrugated beam guardrail structure, comprising: when encountering a construction area where piles cannot be driven, using the separate curved and shear-loaded corrugated beam guardrail structure, separately determining a pile driving construction area for the lower column 15 on the far road side, and determining a pile-free support position for the upper column 7 on the near road side in the construction area where piles cannot be driven; when the end of the corrugated beam guardrail is extended outward at a certain slope, the width of the blocking blocks is reduced one by one to meet the requirements of the certain slope (for example, Figure 2 The left part using a split modular column structure and the right part using a standard column 17 are all from the first width barrier block 18 to the second width barrier block 19 to the third width barrier block 20 to the fourth width barrier block 20, and the width is from large to small), so that the collision surface 22 of the end of the corrugated beam guardrail gradually opens against the direction of traffic flow. The height of the steel cover plate 2 is consistent with that of the adjacent ordinary cover plate and has an embedded effect with its surrounding boundaries. The collision surface of the end of the corrugated beam guardrail is continuous and neat. The upper column 7 on the near-road side is used to withstand the thrust of a car collision, and the lower column 15 on the far-road side is used to withstand the thrust of a car collision and the transmitted bending moment.

[0024] A method for laying out a separate curved and shear-loaded corrugated beam guardrail structure, comprising: when encountering a construction area where piles cannot be driven, using the separate curved and shear-loaded corrugated beam guardrail structure, separately determining a pile driving construction area for the lower column on the far road side, and determining a pile-free support position for the upper column on the near road side in the construction area where piles cannot be driven; when the end of the corrugated beam guardrail is extended outward at a certain slope, by reducing the width of the blocking block one by one or by reducing the width of the connecting steel member one by one (see Figure 3 , Figure 3 Different widths of connecting steel components are used to achieve the outward slope of the end of the corrugated beam guardrail. Figure 3 The mid-outward slope is 1:17) or by changing the pile driving position of the lower columns one by one (see Figure 4 , Figure 4 The lower column is moved outward to achieve the outward slope of the end of the corrugated beam guardrail. Figure 4 The middle and outer extension slope is 1:17) to meet the requirement of the certain slope, so that the collision surface of the end of the corrugated beam guardrail gradually opens against the direction of the traffic flow.

[0025] When the end of the corrugated beam guardrail is extended outward at a certain slope, there are often some construction areas on the side of the highway where piles cannot be driven, such as the roadside drainage ditch. The movable cover of the ditch is not connected to the ditch wall and cannot withstand bending moment. The column cannot be directly fixed on it. In order to make the collision surface of the corrugated beam continuous and neat, the existing cover is transformed into a steel cover and the column is divided into two sections. The specific structure is described as follows. 1. The original corrugated beam column is disconnected at the contact point with the ground, and the upper column above the ground is retained, and the lower column below the ground is moved back a certain distance. This distance can safely avoid the pile driving restricted area, the upper column can withstand the thrust of the car collision, and the lower column can withstand the thrust of the car collision and the transmitted bending moment. 2. The connecting steel plate (steel plate 1) of the upper column is welded and fixed to the modified steel cover plate, so that the two become a solid whole. 3. The height of the steel cover plate is consistent with that of the adjacent ordinary cover plate and should have a certain embedding effect with its surrounding boundary, and have a certain anti-thrust ability under car collision. 4. The upper column is hinged to the steel plate 1, and a hinged hole and a pin structure are used to ensure that no bending moment is generated at the foot of the upper column. 5. The top of the lower column is rigidly connected to the top of the upper column by connecting steel components. A strip steel plate (i.e., an upper strip steel plate 8 and a lower strip steel plate 13) is welded at each end of the steel component. The two strip steel plates are bolted to the upper and lower columns. The bolting strength can ensure that no local tearing occurs at the connection under collision load. 6. In the construction of the outward extension protection of the end of the corrugated beam guardrail, when the columns are arranged at a certain slope, if the bottom plate of the steel plate (the hinged steel plate 4 at the column foot) cannot be completely fixed in the steel cover plate, the bottom plate of the steel plate is completely moved inward into the steel cover plate, and the width of the barrier block is changed at the same time so that the corrugated beam is in the same plane.

[0026] The contents not described in detail in the specification of the present invention belong to the prior art known to the professional and technical personnel in the field. It is pointed out here that the above description helps those skilled in the art to understand the invention, but does not limit the protection scope of the invention. Any equivalent replacement, modification and / or simplification of the above description without departing from the essence of the invention falls within the protection scope of the invention.

Claims

1. A corrugated beam guardrail structure for separating bending and shear forces, characterized in that: It comprises a split combined column structure, the split combined column structure comprises an upper column on the near-road side and a lower column on the far-road side supported by connecting two ends of a steel member, the upper inner side surface of the upper column on the near-road side is connected to a corrugated beam through an anti-blocking block, the bottom of the upper column on the near-road side is connected to a pile-free support seat, and the bottom of the lower column on the far-road side is deeply embedded in the ground to form a pile structure; The pile-free support seat includes a steel cover plate and a column foot hinged steel plate erected thereon, the bottom edge of the column foot hinged steel plate is welded to the steel cover plate by a weld, and the column foot hinged steel plate is connected to the bottom of the upper column on the road side by a reaming hole and a pin shaft; An upper strip steel plate is welded to the upper end of the connecting steel member, and a lower strip steel plate is welded to the lower end. The upper strip steel plate is fixed to the upper part of the outer side surface of the upper column on the near-road side by an upper bolt array, and the lower strip steel plate is fixed to the upper part of the inner side surface of the lower column on the far-road side by a lower bolt array; The steel cover plate is used as a replacement for the common cover plate of the roadside drainage ditch and covers the area where pile driving is not possible.

2. The wave beam guardrail structure for separating bending and shearing forces according to claim 1 is characterized in that: The anti-blocking block is a variable width anti-blocking block.

3. A method for laying out a corrugated beam guardrail structure with separate bending and shear forces, characterized in that: This includes, when encountering a construction area where piling cannot be carried out, using the separated bending and shear force corrugated beam guardrail structure as described in one of claims 1-2 above, separately determining a piling construction area for the lower column on the far road side, and determining a non-pile support position for the upper column on the near road side in the construction area where piling cannot be carried out; when the end of the corrugated beam guardrail extends outward at a certain slope, the requirement of the certain slope is met by gradually reducing the width of the barrier blocks or by gradually reducing the width of the connecting steel components or by gradually changing the piling position of the lower columns, so that the collision surface of the end of the corrugated beam guardrail is gradually opened against the direction of traffic flow.

4. The method for laying out a wave beam guardrail structure for separating bending and shear forces according to claim 3 is characterized in that: The height of the steel cover plate is consistent with that of the adjacent ordinary cover plate and has an embedded function with its surrounding boundaries.

5. The method for laying out a wave beam guardrail structure for separating bending and shear forces according to claim 3 is characterized in that: The impact surface of the end of the corrugated beam guardrail is continuous and neat.

6. The method for laying out a wave beam guardrail structure for separating bending and shear forces according to claim 3 is characterized in that: The upper column on the near-carriageway side is used to bear the thrust of the car collision, and the lower column on the far-carriageway side is used to bear the thrust of the car collision and the bending moment transmitted therefrom.

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