The single ripple joist steel of a kind of bilayer guardrail
Technical field
The utility model relates to the anti-collision facility of highway and bridge, particularly the single ripple joist steel of a kind of bilayer guardrail.
Background technology
Along with the fast development of highway in China construction and communication, traffic safety is faced with severe situation, and anticollision barrier is being brought into play important protective action as a kind of safety device to the traffic safety of highway and bridge.
Usually, anticollision barrier mainly comprises three kinds of stiff safety fence, semi-rigidity rail and flexible safety fences.Wherein, stiff safety fence mainly contains New Jersey safety barrier and combined type guard bar take concrete guardrail as main, its rigidity is excessive, and the ability of buffering and absorption vehicle energy is little, and the dolly accident death rate is high, when the cart center of gravity is higher, crosses easily the concrete guardrail grade that causes the accident after the collision and increase the weight of; When the cart center of gravity is low, causes easily afterwards interior rollover in collision, thereby be easy to form second accident.Semi-rigidity rail is take corrugated beam barrier as main, corrugated beam barrier is divided into two corrugated beam steeled protection fences and three corrugated beam steeled protection fences, this corrugated beam barrier need to rely on the up and down distortion of steel plate to absorb vehicle energy, need certain anti-collision level in order to stop cart, just must use the steel of some can meet the requirements of rigidity in order to reach anti-collision level, the dolly accident death rate is high, and landscape effect is poor.Simultaneously, need single crossbeam overhead higher for anti-cart rolls guardrail, cause the dead accident form of drill chuck under the dolly easily like this.Flexible safety fence rigidity is too small, is conducive to protect dolly and is unfavorable for protecting cart.
In a word, the anticollision barrier of protection dolly needs flexible setting, and the anticollision barrier of protection cart needs the rigidity setting, and semi-rigidity rail is between stiff safety fence and the flexible safety fence, and cart and dolly are slightly had the characteristics of taking into account, thereby popularizes use in countries in the world.Yet semirigid corrugated beam steeled protection fence still can not perfection be taken into account cart and dolly, and guardrail rigidity is little concerning cart, have more and thrust the casualty accident that guardrail is gone out the road surface, but guardrail rigidity is excessive concerning dolly, though can not thrust guardrail, accident death rate is high.So, semirigid corrugated beam steeled protection fence setting is that rigidity greatly a bit well should be a little bit smaller, crossbeam arranges and high should hang down a bit (height a bit is conducive to protect cart a bit well, low a bit be conducive to protect dolly), still be at present and turned round and look at cart and can not take into account dolly fully or turn round and look at dolly and can not take into account fully among the contradiction of cart.Main cause is that the formed protection system of anticollision barrier is for all vehicle set, no matter is that cart or dolly all hit the same position at same protection system when bumping.
The utility model content
The technical problems to be solved in the utility model is for providing the single ripple joist steel of a kind of bilayer guardrail, the structure design of this bilayer list ripple joist steel guardrail can be protected dolly effectively, also can effectively protect cart, also can be used for the medium sized vehicle of protection between cart and dolly simultaneously, thus the death rate of significantly reduction accident.
For solving the problems of the technologies described above, the utility model provides the single ripple joist steel of a kind of bilayer guardrail, comprises column and is fixed in single ripple beam crossbeam of column one side; Described single ripple beam crossbeam comprises two-layer, be respectively upper strata crossbeam and lower floor's crossbeam, and the integral rigidity of described upper strata crossbeam is greater than the integral rigidity of described lower floor crossbeam; Described upper strata crossbeam and described lower floor crossbeam include the guardrail board subelement of a plurality of spread configurations, one side of described column is provided with obstruction block, adjacent guardrail board subelement is fixedly connected with by overlap joint or scab (13),, and described scab further is connected on the described obstruction block.
Preferably, described guardrail board subelement comprises body and is positioned at the edge part of body both sides, the curved setting of described body, and described edge part is bent to form the first circle of steel tube.
Preferably, further be provided with crashproof cable wire in described the first circle of steel tube.
Preferably, after described crashproof cable wire pierced into described the first circle of steel tube, its two ends were fixed on the specific column at Dan Boliang crossbeam two ends.
Preferably, the rigidity of the crashproof cable wire in the first circle of steel tube of its guardrail board subelement is not less than the rigidity of the crashproof cable wire in the first circle of steel tube of its guardrail board subelement in lower floor's crossbeam in the crossbeam of upper strata.
Preferably, the stretching force of the crashproof cable wire in the first circle of steel tube of its guardrail board subelement is not less than the stretching force of the crashproof cable wire in the first circle of steel tube of its guardrail board subelement in lower floor's crossbeam in the crossbeam of upper strata.
Preferably, in described the first circle of steel tube, described edge part further is bent to form the second steel pipe inner circle, and there is minim gap in the inwall of this second steel pipe inner circle and described the first circle of steel tube.
Preferably, further be provided with prestressed cable in described the second steel pipe inner circle.
Preferably, after described prestressed cable pierced into the second steel pipe inner circle, the two ends of described the second steel pipe inner circle were fixed at its two ends.
Preferably, the rigidity of the prestressed cable in the second steel pipe inner circle of its guardrail board subelement is not less than the rigidity of the prestressed cable in the second steel pipe inner circle of its guardrail board subelement in lower floor's crossbeam in the crossbeam of upper strata.
Preferably, the prestressing force of the prestressed cable in the second steel pipe inner circle of its guardrail board subelement is not less than the prestressing force of the prestressed cable in the second steel pipe inner circle of its guardrail board subelement in lower floor's crossbeam in the crossbeam of upper strata.
Preferably, the cross section that is parallel to ground of described column is shaped as peanut shape.
Preferably, in the crossbeam of upper strata the rigidity of its guardrail board subelement greater than the rigidity of its guardrail board subelement in lower floor's crossbeam.
On the basis of existing technology, the single ripple joist steel of bilayer provided by the utility model guardrail comprises column and is fixed in single ripple beam crossbeam of column one side; Described single ripple beam crossbeam comprises two-layer, be respectively upper strata crossbeam and lower floor's crossbeam, and the integral rigidity of described upper strata crossbeam is greater than the integral rigidity of described lower floor crossbeam; Described upper strata crossbeam and described lower floor crossbeam include the guardrail board subelement of a plurality of spread configurations, and a side of described column is provided with obstruction block, and adjacent guardrail board subelement is fixedly connected with by scab, and described scab further is connected on the described obstruction block.
In the said structure design, when car accident occured, lower floor's crossbeam was used for the protection dolly, because the integral rigidity of lower floor's crossbeam is lower, thereby can effectively reduce the death rate of dolly accident; Upper strata crossbeam and lower floor's crossbeam are whole to be used for the protection cart, because the integral rigidity of upper strata crossbeam is larger, thereby can be effective to protect cart.When being used for the protection medium sized vehicle, this upper strata crossbeam and lower floor's crossbeam have the function of classification buffering, destroy first lower floor's crossbeam, destroy the upper strata crossbeam again, and people and vehicle are had significant protective effect.
In sum, the single ripple joist steel of bilayer provided by the utility model guardrail can protect dolly effectively, also can effectively protect cart, also can be used for the medium sized vehicle of protection between cart and dolly simultaneously, thus the death rate of significantly reduction accident.
Description of drawings
Fig. 1 is the front view of double-deck single ripple joist steel guardrail among a kind of embodiment of the utility model;
Fig. 2 is the top view of double-deck single ripple joist steel guardrail among Fig. 1;
Fig. 3 is the lateral view of double-deck single ripple joist steel guardrail among Fig. 1;
Fig. 4 is the structural representation of the guardrail board subelement of double-deck single ripple joist steel guardrail among Fig. 3.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 to Fig. 4:
1 upper strata crossbeam, 2 lower floor's crossbeams, 3 ground locations; 4 columns, 8 crashproof cable wire 9 obstruction blocks 10 first circle of steel tubes; 11 second steel pipe inner circles, 12 prestressed cables, 13 scabs, 14 splice bolts, 15 connecting bolts, 16 caps, 17 bodies;
H1 design dolly collision height h2 design cart collision height.
The specific embodiment
Core of the present utility model is for providing the single ripple joist steel of a kind of bilayer guardrail, the structure design of this bilayer list ripple joist steel guardrail can be protected dolly effectively, also can effectively protect cart, also can be used for the medium sized vehicle of protection between cart and dolly simultaneously, thus the death rate of significantly reduction accident.
In order to make those skilled in the art understand better the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 to Fig. 4, Fig. 1 is the front view of double-deck single ripple joist steel guardrail among a kind of embodiment of the utility model; Fig. 2 is the top view of double-deck single ripple joist steel guardrail among Fig. 1; Fig. 3 is the lateral view of double-deck single ripple joist steel guardrail among Fig. 1; Fig. 4 is the structural representation of the guardrail board subelement of double-deck single ripple joist steel guardrail among Fig. 3.
In one embodiment, as shown in Figure 1 to Figure 3, the single ripple joist steel of bilayer provided by the utility model guardrail comprises column 4 and is fixed in single ripple beam crossbeam of column 4 one sides; Single ripple beam crossbeam comprises two-layer, be respectively upper strata crossbeam 1 and lower floor's crossbeam 2, and the integral rigidity of the upper strata crossbeam 1 guardrail board subelement that includes a plurality of spread configurations greater than integral rigidity upper strata crossbeam 1 and lower floor's crossbeam 2 of lower floor's crossbeam 2, one side of column 4 is provided with obstruction block 9, adjacent guardrail board subelement overlaps or is fixedly connected with by scab 13, and scab 13 further is connected on the obstruction block 9.
Particularly, as shown in Figure 1, when adjacent guardrail board subelement overlapped, the end of two guardrail board subelements was overlapping, then is provided with bolt mounting holes at overlapping part, realized connecting by bolt.
When adjacent guardrail board subelement connects by scab 13, splicing position between adjacent two the guardrail board subelements of scab 13 overlapping coverings, and an end of scab 13 is connected with a guardrail board subelement by at least one bolt, and the other end of described scab 13 passes through at least one bolt and is connected with adjacent another guardrail board subelement.
In the said structure design, when car accident occured, lower floor's crossbeam 2 was used for the protection dolly, because the integral rigidity of lower floor's crossbeam 2 is lower, thereby can effectively reduce the death rate of dolly accident; Upper strata crossbeam 1 and lower floor's crossbeam 2 whole protection carts that are used for owing to the integral rigidity of upper strata crossbeam 1 is larger, thereby can be effective to protect cart.When being used for the protection medium sized vehicle, this upper strata crossbeam 1 and lower floor's crossbeam 2 have the function of classification buffering, destroy first lower floor's crossbeam 2, destroy upper strata crossbeam 1 again, and people and vehicle are had significant protective effect.
To sum up, the single ripple joist steel of bilayer provided by the utility model guardrail can protect dolly effectively, also can effectively protect cart, also can be used for the medium sized vehicle of protection between cart and dolly simultaneously, thus the death rate of significantly reduction accident.
On the basis of technique scheme, can make design to the concrete structure of upper strata crossbeam 1 and lower floor's crossbeam 2.
Such as, as shown in Figure 3 and Figure 4, the guardrail board subelement comprises body 17 and is positioned at the edge part of body 17 both sides, body 17 curved settings, and edge part is bent to form the first circle of steel tube 10.Further, further be provided with crashproof cable wire 8 in the first circle of steel tube 10.
In addition, further, as shown in Figure 3 and Figure 4, in the first circle of steel tube 10, edge part further is bent to form the second steel pipe inner circle 11, and there is minim gap in the inwall of this second steel pipe inner circle 11 and the first circle of steel tube 10.Further be provided with prestressed cable 12 in the second steel pipe inner circle 11.
In said structure, after crashproof cable wire 8 pierced into the first circle of steel tube 10, its two ends were fixed on the specific column at Dan Boliang crossbeam two ends.In addition, after prestressed cable 12 pierced into the second steel pipe inner circle 11, the two ends of the second steel pipe inner circle 11 were fixed at its two ends.
In said structure, can also make further design to the performance of crashproof cable wire 8.
Be not less than the rigidity of the crashproof cable wire 8 in the first circle of steel tube 10 of its guardrail board subelement in lower floor's crossbeam 2 such as, the rigidity of the crashproof cable wire 8 in the upper strata crossbeam 1 in the first circle of steel tube 10 of its guardrail board subelement.In addition, the stretching force of the crashproof cable wire 8 in the first circle of steel tube 10 of its guardrail board subelement is not less than the stretching force of the crashproof cable wire 8 in the first circle of steel tube 10 of its guardrail board subelement in lower floor's crossbeam 2 in the upper strata crossbeam 1.
In said structure, can also make further design to the performance of prestressed cable 12.
Be not less than the rigidity of the prestressed cable 12 in the second steel pipe inner circle 11 of its guardrail board subelement in lower floor's crossbeam 2 such as, the rigidity of the prestressed cable 12 in the upper strata crossbeam 1 in the second steel pipe inner circle 11 of its guardrail board subelement.In addition, the prestressing force of the prestressed cable 12 in the second steel pipe inner circle 11 of its guardrail board subelement is not less than the prestressing force of the prestressed cable 12 in the second steel pipe inner circle 11 of its guardrail board subelement in lower floor's crossbeam 2 in the upper strata crossbeam 1.
Need to prove whether the utility model for being provided with crashproof cable wire 8 in the first circle of steel tube 10, and whether be provided with prestressed cable 12 in the second steel pipe inner circle 11 and all do not limit.Thereby, all crashproof cable wire 8 and prestressed cable 12 can be set in upper strata crossbeam 1 and the lower floor's crossbeam 2; Certainly, also can be provided with a kind of in crashproof cable wire 8 and the prestressed cable 12 in upper strata crossbeam 1 and the lower floor's crossbeam 2; Perhaps, only be to be provided with crashproof cable wire 8 and prestressed cable 12 in the upper strata crossbeam 1; To this, any technical scheme is all within protection domain of the present utility model.
In addition, according to the needs of anti-collision level, width, thickness and the first circle of steel tube 10 and second steel tube place of single ripple beam crossbeam made up setting in the size of cylindrical or inner circle, satisfy the different crashproof class requirement of various criterion.
In addition, as shown in Figure 2, the cross section that is parallel to ground of column 4 be shaped as peanut shape, this kind column 4 is comprised of the integrated peanut shape shaped steel of monoblock steel plate rolling for different spacing.
In said structure, as shown in Figure 1, the top of column 4 is provided with cap 16, and obstruction block 9 connects by connecting bolt 15 and column 4, and scab 13 is fixed together by splice bolt 14 and obstruction block 9; In Fig. 1, h1 is representing the dolly collision height of design, the collision height of the cart of h2 representative design, and 3 is ground location.
More than the single ripple joist steel of a kind of bilayer provided by the utility model guardrail is described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.