• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The ground anchor assembly for the highway guardrail includes spaced first and second ground anchors and a connecting element that interconnects between the two anchors. The anchor cable included in the guardrail assembly is connected to the ground anchor assembly adjacent to the first ground anchor and the second ground anchor is farther away from the center of the guardrail assembly than the first ground anchor. Improved release resistance is provided in the manner described above.
    公开号:KR19980081560A
    申请号:KR1019980014117
    申请日:1998-04-21
    公开日:1998-11-25
    发明作者:크라지윌리엄지.
    申请人:에너지어브소옵션시스템즈,인코퍼레이티드.；
    IPC主号:
    专利说明:

    Guard rail with improved ground anchor assembly.
    The present invention relates to a guardrail of a type suitable for use along a driveway, in particular an improved ground anchor for this guardrail.
    Conventional guardrails are arranged side by side with the driveway so that a car moving along the driveway can change direction. In particular, guardrails are made such that when the car hits the guardrail at an inclination angle, for example 20 degrees, the car does not pass through the guardrail and changes direction along the line that is almost parallel to the driveway. The guardrail needs sufficient tensile strength to perform the functions described above. In particular, it is important that the ends of the guardrails remain properly fixed in place so that the ends can provide a suitable reaction force for the tensile strength associated with the tilt angle impact.
    In the case where the vehicle collides axially with the protrusion of the guardrail, it is important that the guardrail can break without excessive deceleration force applied to the vehicle. For this reason, conventional guardrails include a device for separating guardrails from several front posts to weaken the end terminals. Because of the device, the front anchor withstands most of the load applied in case of an additional impact.
    An effective solution to the aforementioned problem is described in US Pat. No. 5,022,783 assigned to the assignee of the present invention. In this system anchor cable 122 is secured in place on the concrete floor at the protrusion of the guardrail assembly, as shown in FIG. 2A.
    Another method according to the prior art is to fasten the guardrail anchor cable at the front end of the guardrail with a separate wood post which is fixed by an anchor tube fitted into the ground. 9 shows a system according to the prior art in which anchor tube T1 fixed to cable C is connected to rear anchor tube T2 by yoke Y. FIG. In FIG. 9, the front end of the guardrail G is shown at the left side, and the expected direction in which the impact acts is indicated by the arrow. The prior art method described above distributes the impact load associated with impact to the ground more evenly by joining anchor tubes T1 and T2 by means of yoke Y.
    The problem of the system according to the prior art shown in FIG. 9 is shown roughly in FIG. In non-ideal soil conditions, i.e. when the soil is weakened or contains silica, the excess tension on cable C can pull the front tube T1 out of the ground without moving the rear tube T2. Yoke Y has a relatively large cross sectional area in order to actuate and compress and generally prevent it from quickly twisting and deforming.
    It is an object of the present invention to improve the ground anchor assembly so that it does not easily fall out of the weakened soil.
    The invention is defined by the following claims. Within the scope of the claims, it can be seen that the following preferred embodiments provide improved structure and low profile for ground anchor assemblies that do not easily fall out.
    1 shows a ground anchor assembly according to a preferred embodiment of the present invention.
    2 is a perspective view of a guardrail assembly according to a preferred embodiment of the present invention.
    3 is a longitudinal cross-sectional view taken along line 3-3 of FIG.
    4 is an exploded perspective view of the ground anchor assembly shown in FIGS. 2 and 3.
    5 is a perspective view of a guardrail assembly according to another preferred embodiment of the present invention.
    6 is a cross sectional view along line 6-6 of FIG. 5;
    FIG. 7 is a side view taken along line 7-7 of FIG. 6; FIG.
    8 is a perspective view of a guardrail assembly according to a third preferred embodiment of the present invention.
    9 and 10 show ground anchor assemblies according to the prior art;
    * Sign Description
    10, 28 ... ground anchor assembly 12, 14 ... ground anchor
    16 ... connecting elements 18 ... anchor cable
    20 ... guardrail assembly 22 ... guardrail
    24 ... center of guardrail assembly
    26 ... end of guardrail assembly
    1 shows a ground anchor assembly 10 according to the present invention. The ground anchor assembly 10 comprises a first ground anchor 12, a second ground anchor 14 and a connecting element 16 connecting the ground anchor. The connecting element 16 is a thin strap configured to transfer tension from anchor 12 to anchor 14. The anchor cable 18 is secured to the first ground anchor 12 and the rear end of the anchor cable 18 is secured to the guardrail assembly as detailed below.
    As shown in FIG. 1, the ground anchors 12, 14 take the form of a rectangular cylinder, such as a tube embedded in soil S, so that they rarely protrude above the ground height L. The anticipated direction of motion of the crashing vehicle is shown in the direction of the arrow in FIG. 1, and it is important to note that the first ground anchor 12 to which the cable 18 is fixed is arranged downstream of the second ground anchor 14. . That is, the colliding car passes through the second ground anchor 14 before it passes through the first ground anchor 12. For the guardrail assembly (not shown in FIG. 1), the first ground anchor 12 is disposed closer to the center of the guardrail assembly than the second ground anchor 14.
    The structure shown in FIG. 1 shows that when a high tensile force is applied to the cable 18, the connecting element 16 transfers a portion of the tensile force to the second ground anchor 14 so that the tensile load is reduced to the ground anchors 12, 14. It can be seen that it provides an important advantage shared between them. The anchor 12 can be pulled out without pulling out the anchor 14 and the tendency of the first ground anchor 12 to rotate around the yoke 16 is eliminated, and the pull-out resistance of the ground anchor assembly 10 is increased. do.
    2 is a perspective view of a guardrail assembly 20 having a portion 28 according to a preferred embodiment of the ground anchor assembly of the present invention. As shown in FIG. 2, the guardrail assembly 20 includes guardrails 22 in parallel, and the assembly 20 includes a central portion 24 and an end 26. Cars moving along neighboring roadways move in the direction of the arrow.
    3 provides more detailed information about the arrangement of the ground anchor assembly 28. As shown in FIG. 3, the ground anchor assembly 28 includes a first tube 30 and a second tube 32 interconnected by connecting elements 36. As best seen in FIG. 4, the connecting element 36 defines an opening 40 in line with the slot 38 extending axially on each side of the slot adjacent to the end.
    In FIG. 4, the ground anchor assembly 28 includes an anchor cable mounting element 42 that includes a plug 44 that is secured in place by a cross bolt 46 and fits within the upper end of the first conduit 30. Have The anchor cable mounting element 42 includes a center tube 48 formed to receive and secure the front end of the side tube 50 in parallel with the anchor cable.
    The ground anchor assembly 28 includes a front mounting element 56 consisting of a plug 60 extending vertically and a top plate 58. This plug 60 is made in place by a cross bolt 62 and made to fit within the upper end of the second tube 32. Bolt 64 secures top plate 58 in place with connecting element 36 by a selected one of the openings 40.
    In FIG. 3, the guardrail assembly 20 includes a lever arm 66 mounted at its lower end with a pair of tubes 68, shown only in FIG. 3. Each tube 68 is a side tube and a pair of bolts 70 (only one shown in FIG. 3) connecting the tube 68, the side tube 50 and the front leg 72 of the guardrail assembly 20. It is arranged side by side with one of the 50. The upper end of the lever arm 66 is disposed adjacent to the protruding plate 76 disposed at the foremost portion of the guardrail assembly 20. The anchor cable 74 is secured at the foremost end to the anchor cable mounting element 74 by a central tube 48.
    The ground anchor assembly 28 of FIG. 3 can be installed by fitting the tubes 30, 32 into the soil S until the tops of the tubes 30, 32 reach the ground height L. FIG. The connecting element 36 is then arranged around the upper ends of the tubes 30, 32 and the anchor cable mounting element 42 is installed in place in the first tube 30. The front mounting element 56 is then installed into the second conduit 32 and the connecting element 36 is arranged snugly with respect to the first conduit 30. The bolt 64 then passes through one of the openings 40 and tightens. Once the guardrail assembly 20 and the ground anchor assembly 28 are in place, the anchor cable 74 is fixed in place and adjusted in the center tube 48, the lever arm 66 and the bolt 70. Can be mounted.
    As shown in FIG. 3, the connecting element 36 and the second tube 32 are arranged in front of the anchor cable 74, beyond the end 26 of the guardrail assembly 20. The connecting element 36 is arranged in a vertical line aligned with the vertical plane comprising the anchor cable 74. No part of the connecting element 36 or the second tube 32 or the front mounting element 56 extends more than one inch above the ground height L.
    One of the advantages shown in the embodiment of FIG. 3 is that ground anchor assembly 28 operates as described in FIG. 1 to provide high resistance so that it does not easily fall out, even when used in weak soil. When the first ground anchor moves vertically with respect to the vertical component of tension applied to the anchor cable, the connecting element is tensioned to distribute some of the vertical component of the applied tensile load to the second ground anchor. In this way the first ground anchor is pulled out of the soil, reducing the likelihood of breaking the guardrail. In addition, the second tube 32 and the connecting element 36 do not extend above the ground height L, and do not interfere with any difficulty that prevents a collision vehicle. Since the connecting element 36 acts under tension rather than being compressed, a thin and low profile structure can be used.
    In order to increase the strength of the ground anchor assembly 28 with respect to the pull-out force, the anchor cable 74 is preferably arranged at an acute angle with respect to the horizontal plane. In the preferred embodiment the angle between anchor cable 74 and connecting element 36 is 150 degrees and 165 degrees or 170 degrees is more preferred. This coincides with an angle of about 10 degrees between the anchor cable 74 and the horizontal plane.
    The remainder of the guardrail assembly 20 downstream of the ground anchor assembly 28 may be made by the method described in US Pat. No. 5,022,782 assigned to the assignee of the present invention. The patent clearly describes the operation of the lever arm 66.
    5 to 7 relate to the guardrail assembly 100 comprising a part according to the preferred embodiment of the ground anchor assembly. As shown in FIG. 5, the guardrail assembly 100 includes a guardrail 102 having a central portion 104 and an end 106. The ground anchor assembly 107 is the ground anchor assembly 28 described above, except that the anchor cable mounting element 42 receives the front end of the anchor cable 107 without using the lever arm described above. Similar to). Here, the rear ground anchor of the ground anchor assembly 28 supports the front end of the anchor cable 108 and the front end 110 of the guardrail assembly 100.
    As shown in FIGS. 6 and 7, the rear end of the anchor cable 108 is secured to the guardrail 102 by a housing 104 bolted to the guardrail 102. Housing 104 defines a central area for receiving screws 116 securely fastened to the rear ends of cables 108. Nut 118 is supported in housing 114 and engages screw 116 to tension cable 108. Rear attachment of the anchor cable 108, ie, placing all elements of the guardrail assembly 100 behind the ground anchor assembly 108, is known to those skilled in the art.
    8 shows a guardrail assembly 140 according to another embodiment including an anchor cable 142 and a ground anchor assembly 144. Ground anchor assembly 144 is identical to ground anchor assembly 108 described above. 8 shows a guardrail assembly 140 of the type described above suitable for use with the improved ground anchor assembly in accordance with the present invention.
    As is apparent from the foregoing description, the ground anchor assembly according to the present invention is suitable for use with various guardrails. In this embodiment, the ground anchor assembly extends forward of the guardrail assembly. This is not always required if the two ground anchors of the ground anchor assembly can be placed in the area occupied by the guardrail. Further, the present invention is not limited to the use of the front end of the guardrail assembly but may also be applied to the rear end and the middle portion of the assembly. If desired, more than one ground anchor can be used.
    Various materials are suitable for use in the present invention. In one preferred form, the ground anchor can take the form of a mild steel structural tube and the connecting element can be welded from a mild steel linear element. Similarly, the front and rear mounting elements can be welded with the mild steel elements. While the size may be appropriate for the application, it can be seen that the following sizes are suitable in the preferred embodiment. The ground anchor may be formed of a tube having a wall having a length of 78 inches (200 cm), a thickness of 3/16 inches (0.5 cm), and a width and height of 6 inches * 8 inches (15 cm * 20 cm). The connecting element may be formed of a mild steel strip having a thickness of 3/8 inch (1 cm), a width of 3 inches (8 cm) and a total length of 90 inches (230 cm). The mounting element may be welded with mild steel having a thickness of 1/4 inch (0.6 cm) in the area of plugs 44 and 60 and less than 1/8 inch (0.3 cm) for the remaining components.
    Various modifications and variations can be made to the preferred embodiment described above. For example, the first and second ground anchors may be formed from concrete piles formed around an attachment to which an anchor or connecting element is attached, or a post made of a composite including wood posts, I-beam posts, glass fiber or carbon fiber composites. . Further, the connecting element need not be formed as a frame as shown in the figure, and can take a structural form suitable for carrying a desired level of tensile load. The anchor cable can be subjected to the force of a chain, strap or tension member, and the term tension member will be widely used for all devices.
    As another example, the present invention may be suitable for use with anisotropic guardrails of a type suitable for use between two lanes in which a car moves in opposite directions.
    The foregoing detailed description has described only some of the many forms that the invention can take. For this reason, the present invention is not limited to the above description, which is merely an example. The following claims only limit the scope of the invention.
    权利要求:
    Claims (13)
    [1" claim-type="Currently amended] A guardrail assembly consisting of a guardrail interconnected with a tension member secured to a guardrail assembly, the guardrail assembly comprising an end and a center, the center being located downstream of the end in the expected direction of motion of the crashing car, and improving. Ground anchor assemblies may include spaced apart first and second ground anchors; A connecting element connecting the first and second ground anchors to each other; A tension member coupled to the ground anchor assembly adjacent the first ground anchor; A guardrail assembly comprising a second ground anchor disposed more spaced from the center of the guardrail assembly than the first ground anchor.
    [2" claim-type="Currently amended] 2. The guardrail assembly of claim 1, wherein the connecting element extends further from the center of the guardrail assembly than the tension member.
    [3" claim-type="Currently amended] The guardrail assembly of claim 1 wherein said connecting element extends along a horizontal line, said horizontal line being positioned in a vertical plane that includes a tension member.
    [4" claim-type="Currently amended] The guardrail assembly of claim 1 wherein each ground anchor consists of a respective post embedded in soil adjacent to the guardrail assembly.
    [5" claim-type="Currently amended] 5. The guardrail assembly of claim 4, wherein the second ground anchor is located beyond the end of the guardrail assembly.
    [6" claim-type="Currently amended] 6. A guardrail assembly as claimed in claim 5 wherein the connecting element extends beyond the end of the guardrail.
    [7" claim-type="Currently amended] 7. The guardrail assembly of claim 6 wherein the connecting element is exposed at the top surface of the soil.
    [8" claim-type="Currently amended] 7. The guardrail assembly of claim 6, wherein no portion of the second ground anchor extends more than about 1 inch above the top surface of the soil.
    [9" claim-type="Currently amended] 9. The guardrail assembly of claim 8, wherein no portion of the connecting element extends more than about 1 inch above the top surface of the soil.
    [10" claim-type="Currently amended] The guardrail assembly of claim 1 wherein the tension member makes an angle of at least 150 [deg.] With the connecting element.
    [11" claim-type="Currently amended] 11. The guardrail assembly of claim 10, wherein said inclination angle is preferably at least 165 degrees.
    [12" claim-type="Currently amended] 2. The connection element of claim 1, wherein the connecting element consists of a frame forming a slot extending longitudinally, the first and second ground anchors passing through the slot, the frame transmitting tension between the ground anchors, and at least one ground And the anchor is capable of sliding freely into the slot.
    [13" claim-type="Currently amended] The guardrail assembly of claim 1 wherein the end is comprised of a terminal portion of the guardrail assembly and the central portion is disposed rearward of the end relative to the direction of motion of the car on an adjacent driveway.
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    同族专利:
    公开号 | 公开日
    EP0874085B1|2003-08-06|
    TW496920B|2002-08-01|
    MY117397A|2004-06-30|
    DE69816898T2|2004-06-17|
    CA2235711C|2001-12-18|
    US5797591A|1998-08-25|
    DE69816898D1|2003-09-11|
    PT874085E|2003-12-31|
    JPH116115A|1999-01-12|
    AU6361398A|1998-10-29|
    NZ330210A|1998-11-25|
    AU725167B2|2000-10-05|
    ES2202745T3|2004-04-01|
    EP0874085A2|1998-10-28|
    CA2235711A1|1998-10-25|
    EP0874085A3|1999-08-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-04-25|Priority to US08/846,123
    1997-04-25|Priority to US8/846,123
    1998-04-21|Application filed by 에너지어브소옵션시스템즈,인코퍼레이티드.
    1998-11-25|Publication of KR19980081560A
    优先权:
    申请号 | 申请日 | 专利标题
    US08/846,123|US5797591A|1997-04-25|1997-04-25|Guardrail with improved ground anchor assembly|
    US8/846,123|1997-04-25|
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