CN210766379U - Fabricated prestressed anti-collision guardrail for urban viaduct - Google Patents
Fabricated prestressed anti-collision guardrail for urban viaduct Download PDFInfo
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- CN210766379U CN210766379U CN201921062592.4U CN201921062592U CN210766379U CN 210766379 U CN210766379 U CN 210766379U CN 201921062592 U CN201921062592 U CN 201921062592U CN 210766379 U CN210766379 U CN 210766379U
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Abstract
The utility model provides an assembled prestressing force city overpass anticollision barrier belongs to city overpass safety protection technical field. Transverse and longitudinal stress steel bars and guardrail shear steel bars are arranged in the anti-collision guardrail and extend out of the bottom of the guardrail main body to form an overhanging steel reinforcement cage, and the steel reinforcement cage reserved at the bottom end part of the anti-collision guardrail is inserted into a pouring groove reserved on the basis of the viaduct and poured with high-strength concrete; a plurality of anti-overturning anchors are arranged at the connecting positions of the anti-collision guardrails and the viaduct foundation at equal intervals; two prestressed riggings are arranged inside the anti-collision guardrail; the upper end part of the anti-collision guardrail is provided with an anti-falling object protecting net; the beneficial effects of the utility model are that crashproof performance is good, the installation of being convenient for, and easy replacement, the installation is simple and convenient fast, and two rows of prestressed cables are arranged to inside, have improved crash barrier's bearing capacity effectively, have guaranteed the rationality of atress, when the heavy object that falls is left in the production when vehicle striking guardrail face, prevent weighing down thing protecting wire net can stop the heavy object fall injure by a crashing object city overhead bridge pedestrian and smash bad vehicle of traveling.
Description
Technical Field
The invention belongs to the technical field of urban viaduct safety protection, and particularly relates to an assembled prestressed urban viaduct anti-collision guardrail.
Background
At present, the anti-collision guardrail for the urban viaduct mainly comprises a concrete guardrail, a steel guardrail and a combined guardrail, wherein the concrete guardrail and the combined guardrail are mainly constructed in a cast-in-place mode. By adopting the traditional prefabricated guardrail assembling technology, the dislocation of the height direction and the horizontal direction of the guardrail is easy to occur in the assembling process, so that the effect is not ideal, and the appearance of the guardrail is uneven; and in guardrail and girder concatenation position, there is long-term flooding phenomenon, greatly reduced structural durability. And the replacement difficulty of the existing technology, no matter the existing technology is a cast-in-place guardrail or a conventional prefabricated assembled guardrail, is relatively high. The cast-in-place guardrail is slow in construction speed and does not accord with the prefabrication and assembly idea advocated by the state. The existing guardrail prefabrication and assembling method has the problems of dislocation of assembled top surfaces of guardrails, poor durability of seams, difficulty in replacement and the like.
Disclosure of Invention
The technical scheme adopted by the invention is as follows:
in order to solve the technical problem, the invention provides an assembled prestressed urban viaduct anti-collision guardrail, which comprises a viaduct foundation, an anti-collision guardrail, an anti-falling object protecting net, a prestressed rigging, a protecting net fixing piece and a concrete pouring belt, wherein the anti-falling object protecting net is arranged on the viaduct foundation;
the anti-collision guardrail comprises a prefabricated guardrail main body, transverse stressed steel bars, vertical stressed steel bars, transverse stressed shear steel bars, bottom mounting clamping tenons, an overhanging steel bar cage, an anchoring platform, a cableway and a protective net mounting groove;
transverse stressed steel bars, vertical stressed steel bars and transverse stressed shear steel bars are arranged in the prefabricated guardrail main body; the bottom mounting clamping tenon is positioned at the bottom of the prefabricated guardrail main body, the transverse stress steel bar, the vertical stress steel bar and the transverse stress shear steel bar form an overhanging steel bar cage at the bottom of the bottom mounting clamping tenon, two prestressed cable ways are reserved in the prefabricated guardrail main body, the anchoring platform is arranged at the front end of the prefabricated guardrail main body, and a protective net mounting groove is prefabricated in the middle position of the upper end part of the prefabricated guardrail main body;
the lower end part of the falling-proof object protecting net is inserted into the protecting net mounting groove, protecting net fixing parts are arranged on the left side and the right side of the falling-proof object protecting net on the upper plane of the anti-collision guardrail, and connecting bolts penetrate through the protecting net fixing parts and the falling-proof object protecting net and are fixed; the lower limbs of the protecting net fixing pieces are fixed on the prefabricated guardrail main body through expansion bolts; the connecting bolt penetrates through the bottom of the falling object preventing protecting net and the front side and the rear side of the upper end of the anti-collision guardrail and is fixed;
the anchoring platform at the lower end part of the anti-collision guardrail is fixed on the basis of the viaduct through an anti-overturning anchor; pouring high-strength concrete at the position of the externally extending reinforcement cage to form a concrete pouring belt;
the anti-collision guardrail comprises a pre-stressed cable, a cable body part of the pre-stressed cable is fixed in a cableway, two ends of the cable body are locked by cable heads, the cable head parts are fixed on the left side edge and the right side edge of a prefabricated guardrail body, and cable head base plates are arranged between the cable heads and the guardrail body;
furthermore, the viaduct foundation consists of five parts, namely a bridge deck foundation part, a front end foundation, a rear end foundation, a pouring groove and a drainage ditch;
a pouring groove is formed by the front foundation and the rear foundation in a surrounding mode, the width of the pouring groove is matched with that of the bottom installation clamping tenon, and the depth of the pouring groove is larger than the exposed length of the overhanging reinforcement cage; the drainage ditch is arranged at the rear side of the pouring trough;
further, the connection step of the anti-collision guardrail and the viaduct foundation is as follows: when the anti-collision guardrail is connected with the viaduct foundation, the bottom mounting clamping tenon reserved at the bottom end part of the anti-collision guardrail is inserted into the pouring groove on the highway foundation, the front end foundation is clamped outside the bottom mounting clamping tenon, the rear end foundation is clamped inside the bottom mounting clamping tenon, the overhanging reinforcement cage extends to the middle lower part of the pouring groove, and high-strength concrete is poured in the pouring groove to enable the overhanging reinforcement cage to be combined with the pouring groove to form a concrete pouring belt; uniformly installing anti-overturning ground anchors on the anchoring platform at the connecting part of the anti-collision guardrail and the viaduct foundation at equal intervals, wherein the anti-overturning ground anchors penetrate through the anchoring platform and are anchored in the viaduct foundation;
further, the cable body is made of a plurality of steel strands.
Furthermore, the collision protection guardrail is equidistantly provided with dividing seams, and a reserved prestressed rigging arrangement space is reserved in the arranged dividing seams.
Furthermore, one side of the prefabricated guardrail main body, which is provided with the anchoring platform, is an inclined plane, and the other side of the prefabricated guardrail main body is a vertical plane.
The invention has the advantages of
The invention has the beneficial effects that: the anti-collision guardrail has the beneficial effects of good anti-collision performance, good stress performance, convenience in installation, easiness in replacement, quickness, simplicity and convenience in installation, and two rows of prestressed cables are arranged in the anti-collision guardrail, so that the bearing capacity of the anti-collision guardrail is effectively improved, the rationality of stress is ensured, and when a vehicle generates a heavy object left when impacting a guardrail surface, the anti-falling object protecting net can prevent the heavy object from falling to hurt pedestrians under an urban viaduct and smash a running vehicle, so that the safety performance of the highway guardrail is improved, good protection is provided for drivers and passengers, and casualties and economic losses when traffic accidents occur are reduced.
Drawings
FIG. 1 is a side view of an assembled pre-stressed urban viaduct crash barrier structure;
FIG. 2 is a schematic structural view of an assembled prestressed anti-collision guardrail for an urban viaduct;
FIG. 3 is a schematic view of a crash barrier construction;
FIG. 4 is a schematic view of the connection between the crash barrier and the falling object protection net;
FIG. 5 is a schematic view of the connection between the crash barrier and the viaduct foundation;
FIG. 6 is a detail view at A;
FIG. 7 is a schematic diagram of the basic structure of a viaduct;
FIG. 8 is a schematic diagram of a prestressed cable structure;
FIG. 9 is a schematic view of a crash barrier arrangement;
1 is a viaduct foundation; 1-1 is a bridge deck foundation part; 1-2 is a front-end foundation; 1-3 is a back end foundation; 1-4 is a casting groove; 1-5 is a drainage ditch; 2 is an anti-collision guardrail; 2-1 is a prefabricated guardrail main body; 2-2 is a transverse stressed steel bar; 2-3 are vertical stressed steel bars; the transverse stress shear steel bars 2-4 and 2-5 are bottom mounting tenons; 2-6 are overhanging reinforcement cages; 2-7 is an anchoring platform; 2-8 are cableways; 2-9 are protective net mounting grooves;
3 is an anti-falling object protecting net; 4 is a prestressed rigging; 5 is a protecting net fixing piece; 6 is an anti-overturning anchor 6, and 7 is a connecting bolt; 8 is an expansion bolt; 9 is a concrete pouring belt; and 10 is a dividing slit.
Detailed Description
In order to further illustrate the present invention, the following detailed description of the present invention is given with reference to the accompanying drawings and examples, which should not be construed as limiting the scope of the present invention.
Example (b): an assembled prestressed anti-collision guardrail for an urban viaduct comprises a viaduct foundation 1, an anti-collision guardrail 2, an anti-falling object protecting net 3, a prestressed rigging 4, a protecting net fixing piece 5 and a concrete pouring belt 9;
the anti-collision guardrail 2 consists of nine parts, namely a prefabricated guardrail main body 2-1, transverse stress steel bars 2-2, vertical stress steel bars 2-3, transverse stress shear steel bars 2-4, bottom mounting tenons 2-5, outward extending steel bar cages 2-6, anchoring platforms 2-7, ropeways 2-8 and protective net mounting grooves 2-9;
transverse stressed steel bars 2-2, vertical stressed steel bars 2-3 and transverse stressed shear steel bars 2-4 are arranged inside the prefabricated guardrail main body 2-1; the bottom mounting tenon 2-5 is positioned at the bottom of the prefabricated guardrail main body 2-1, the transverse stressed steel bar 2-2, the vertical stressed steel bar 2-3 and the transverse stressed shear steel bar 2-4 form an overhanging steel bar cage 2-6 at the bottom of the bottom mounting tenon 2-5, two prestressed cable ways 2-8 are reserved in the prefabricated guardrail main body 2-1, the anchoring platform 2-7 is arranged at the front end of the prefabricated guardrail main body 2-1, and a protective net mounting groove 2-9 is prefabricated in the middle of the upper end of the prefabricated guardrail main body 2-1;
the lower end part of the falling-object-preventing protection net 3 is inserted into the protection net mounting grooves 2-9, protection net fixing parts 5 are arranged on the left side and the right side of the falling-object-preventing protection net 3 on the upper plane of the anti-collision guardrail 2, and connecting bolts 7 penetrate through the upper limbs of the protection net fixing parts 5 and the falling-object-preventing protection net 3 and are fixed; the lower limbs of the protecting net fixing piece 5 are fixed on the prefabricated guardrail main body 2-1 through expansion bolts 8; the connecting bolt 7 penetrates through the bottom of the falling object preventing protecting net 3 and the front side and the rear side of the upper end of the anti-collision guardrail 2 and is fixed;
the anchoring platform 2-7 at the lower end part of the anti-collision guardrail 2 is fixed on the viaduct foundation 1 through an anti-overturning anchor 6; pouring high-strength concrete at the positions 2-6 of the externally extending reinforcement cages to form a concrete pouring belt 9;
2 prestressed cable devices 4 are arranged inside the crash barrier 2, cable bodies 4-2 of the prestressed cable devices 4 are fixed inside a cableway 2-8, two ends of the cable bodies 4-2 are locked by cable heads 4-1, cable heads 4-1 are partially fixed on the left side and the right side of the prefabricated barrier body 2-1, and cable head base plates 4-3 are arranged between the cable heads 4-1 and the barrier body 2-1;
the viaduct foundation 1 consists of five parts, namely a bridge deck foundation part 1-1, a front end foundation 1-2, a rear end foundation 1-3, a pouring groove 1-4 and a drainage ditch 1-5;
a pouring groove 1-4 is defined by the front foundation 1-2 and the rear foundation 1-3, the width of the pouring groove 1-4 is matched with the width of the bottom mounting tenon 2-5, and the depth of the pouring groove 1-4 is larger than the exposed length of the overhanging reinforcement cage 2-6; the drainage ditch 1-5 is arranged at the rear side of the casting groove 1-4;
the connection steps of the anti-collision guardrail 2 and the viaduct foundation 1 are as follows: when the anti-collision guardrail 2 is connected with the viaduct foundation 1, the reserved bottom mounting clamping tenon 2-5 at the bottom end part of the anti-collision guardrail 2 is inserted into the pouring groove 1-4 on the highway foundation, the front end foundation 1-2 is clamped at the outer side of the bottom mounting clamping tenon 2-5, the rear end foundation 1-3 is clamped at the inner side of the bottom mounting clamping tenon 2-5, the overhanging reinforcement cage 2-6 extends to the middle lower part of the pouring groove 1-4, and high-strength concrete is poured into the pouring groove 1-4 to enable the overhanging reinforcement cage 2-6 and the pouring groove 1-4 to be combined together to form a concrete pouring belt 9; uniformly installing anti-overturning anchors 6 on anchoring platforms 2-7 at the connecting part of the anti-collision guardrail 2 and the viaduct foundation 1 at equal intervals, wherein the anti-overturning anchors 6 penetrate through the anchoring platforms 2-7 and are anchored in the viaduct foundation 1;
the cable body 4-2 is made of a plurality of steel strands. The anti-collision guardrail 2 is equidistantly provided with dividing seams 10, and an arrangement space for the pre-stressed rigging 4 is reserved in the arranged dividing seams 10. One side of the prefabricated guardrail main body 2-1 with the anchoring platform 2-7 is an inclined plane, and the other side is a vertical plane.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides an assembled prestressing force city overpass anticollision barrier, includes overpass basis (1), anticollision barrier (2), prevents weighing down thing protecting wire net (3), prestressing force rigging (4), protecting wire net mounting (5), concrete pouring area (9), its characterized in that:
the anti-collision guardrail (2) consists of nine parts, namely a prefabricated guardrail main body (2-1), transverse stress steel bars (2-2), vertical stress steel bars (2-3), transverse stress shear steel bars (2-4), bottom mounting tenons (2-5), overhanging steel bar cages (2-6), anchoring platforms (2-7), cableways (2-8) and protective net mounting grooves (2-9);
transverse stressed steel bars (2-2), vertical stressed steel bars (2-3) and transverse stressed shear steel bars (2-4) are arranged in the prefabricated guardrail main body (2-1); the bottom mounting tenon (2-5) is positioned at the bottom of the prefabricated guardrail main body (2-1), the transverse stress steel bar (2-2), the vertical stress steel bar (2-3) and the transverse stress shear steel bar (2-4) form an overhanging steel bar cage (2-6) at the bottom of the bottom mounting tenon (2-5), two prestressed cable ways (2-8) are reserved in the prefabricated guardrail main body (2-1), the anchoring platform (2-7) is arranged at the front end of the prefabricated guardrail main body (2-1), and a protective net mounting groove (2-9) is prefabricated in the middle of the upper end of the prefabricated guardrail main body (2-1);
the lower end part of the falling-object-preventing protection net (3) is inserted into the protection net mounting groove (2-9), and protection net fixing pieces (5) are arranged on the left side and the right side of the falling-object-preventing protection net (3) on the upper plane of the anti-collision guardrail (2), and connecting bolts (7) penetrate through the upper limbs of the protection net fixing pieces (5) and the falling-object-preventing protection net (3) and are fixed; the lower limbs of the protecting net fixing piece (5) are fixed on the prefabricated guardrail main body (2-1) through expansion bolts (8); the connecting bolt (7) penetrates through the bottom of the falling object preventing protecting net (3) and the front side and the rear side of the upper end of the anti-collision guardrail (2) and is fixed;
an anchoring platform (2-7) at the lower end part of the anti-collision guardrail (2) is fixed on the viaduct foundation (1) through an anti-overturning anchor (6); pouring high-strength concrete at the position of the externally extending reinforcement cage (2-6) to form a concrete pouring belt (9);
2 prestressed riggings (4) are arranged inside the anti-collision guardrail (2), a rope body (4-2) of each prestressed rigging (4) is partially fixed inside a cableway (2-8), two ends of the rope body (4-2) are locked by rope heads (4-1), the rope heads (4-1) are partially fixed on the left side edge and the right side edge of the prefabricated guardrail main body (2-1), and rope head base plates (4-3) are arranged between the rope heads (4-1) and the guardrail main body (2-1).
2. The fabricated prestressed urban viaduct anti-collision guardrail of claim 1, characterized in that: the viaduct foundation (1) consists of five parts, namely a bridge deck foundation part (1-1), a front end foundation (1-2), a rear end foundation (1-3), a pouring groove (1-4) and a drainage ditch (1-5);
the front end foundation (1-2) and the rear end foundation (1-3) enclose a pouring groove (1-4), the width of the pouring groove (1-4) is matched with that of the bottom mounting tenon (2-5), and the depth of the pouring groove (1-4) is greater than the exposed length of the overhanging reinforcement cage (2-6); the drainage ditch (1-5) is arranged at the rear side of the casting groove (1-4).
3. The fabricated prestressed urban viaduct anti-collision guardrail of claim 1, characterized in that: the cable body (4-2) is made of a plurality of steel strands.
4. The fabricated prestressed urban viaduct anti-collision guardrail of claim 1, characterized in that: the anti-collision guardrail (2) is equidistantly provided with the dividing slits (10), and the arrangement space of the pre-stressed rigging (4) is reserved in the arranged dividing slits (10).
5. The fabricated prestressed urban viaduct anti-collision guardrail of claim 1, characterized in that: one side of the prefabricated guardrail main body (2-1) with the anchoring platform (2-7) is an inclined plane, and the other side is a vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921062592.4U CN210766379U (en) | 2019-07-09 | 2019-07-09 | Fabricated prestressed anti-collision guardrail for urban viaduct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921062592.4U CN210766379U (en) | 2019-07-09 | 2019-07-09 | Fabricated prestressed anti-collision guardrail for urban viaduct |
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| Publication Number | Publication Date |
|---|---|
| CN210766379U true CN210766379U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921062592.4U Active CN210766379U (en) | 2019-07-09 | 2019-07-09 | Fabricated prestressed anti-collision guardrail for urban viaduct |
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| CN (1) | CN210766379U (en) |
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- 2019-07-09 CN CN201921062592.4U patent/CN210766379U/en active Active
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