ES2599078B1 - DEVICE AND METHOD FOR INSTALLING PRETILES IN EXISTING BRIDGES. - Google Patents
DEVICE AND METHOD FOR INSTALLING PRETILES IN EXISTING BRIDGES. Download PDFInfo
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- ES2599078B1 ES2599078B1 ES201531127A ES201531127A ES2599078B1 ES 2599078 B1 ES2599078 B1 ES 2599078B1 ES 201531127 A ES201531127 A ES 201531127A ES 201531127 A ES201531127 A ES 201531127A ES 2599078 B1 ES2599078 B1 ES 2599078B1
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- brackets
- board
- existing
- bridges
- prets
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/148—Means for vehicle stopping using impact energy absorbers mobile arrangements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Dispositivo para instalación de pretiles en puentes existentes, que incluye una pluralidad de ménsulas metálicas (3), adecuadas para soportar un pretil (2) de hormigón armado, para puentes, sin anclaje y homologado, cuando se produce el desplazamiento de la barrera sobre ellas; estando dichas ménsulas ancladas a la losa que conforma el tablero (1) del puente, sobresaliendo lateralmente enrasadas con dicho tablero, a lo largo del mismo.Device for installing prets on existing bridges, which includes a plurality of metal brackets (3), suitable for supporting a reinforced concrete parapet (2), for bridges, without anchoring and homologated, when the displacement of the barrier over them occurs ; said brackets being anchored to the slab that forms the board (1) of the bridge, protruding laterally flush with said board, along the same.
Description
DESCRIPCIÓN DESCRIPTION
Dispositivo y método para instalación de pretiles en puentes existentes. Device and method for installing prets on existing bridges.
Objeto de la invención 5 Object of the invention 5
El objeto de la presente invención se refiere al ámbito de los sistemas de contención en estructuras, concretamente a un elemento auxiliar para la instalación de pretiles en puentes existentes, en los que el sistema de contención existente se sitúa prácticamente en el borde del tablero. 10 The object of the present invention relates to the scope of containment systems in structures, specifically to an auxiliary element for the installation of prets on existing bridges, in which the existing containment system is practically located at the edge of the board. 10
Antecedentes de la invención Background of the invention
El uso de sistemas de contención frente a caídas a distinto nivel se ha estado utilizando desde el comienzo de las construcciones en altura. Dichos elementos 15 fueron desarrollándose a la vez que los elementos constructivos se adaptaban a las necesidades de la población, de forma que la técnica y materiales han seguido un avance ligado a las nuevas metodologías constructivas así como al desarrollo de los vehículos de motor que ha provocado un incremento en las cargas a soportar por los mismos, lo que junto con las mayores velocidades desarrolladas por dichos 20 vehículos, producen una energía cinética mucho mayor que la que se ha tenido en cuenta históricamente. Esta evolución del vehículo conllevó, además, al incremento de accidentalidad vial, haciendo consciente a la sociedad de la necesidad de incorporar medios efectivos para la reducción de la misma. Así, la seguridad vial se ha convertido en uno de los aspectos más importantes a tener en cuenta a la hora 25 de diseñar nuevas carreteras o acondicionar las ya existentes, siendo los accidentes por caída a distinto nivel uno de los de mayor gravedad. The use of containment systems against falls at different levels has been used since the beginning of the height constructions. These elements 15 were developed while the construction elements were adapted to the needs of the population, so that the technique and materials have followed an advance linked to the new construction methodologies as well as to the development of the motor vehicles that has caused an increase in the loads to be borne by them, which together with the higher speeds developed by said 20 vehicles, produce a much greater kinetic energy than has been historically taken into account. This evolution of the vehicle also led to the increase in road accidents, making society aware of the need to incorporate effective means to reduce it. Thus, road safety has become one of the most important aspects to take into account at the time of designing 25 new roads or conditioning existing ones, being accidents due to falling to different levels one of the most serious.
Los sistemas de contención instalados en estructuras se diferencian del resto de barreras de seguridad en que son parte integrante de la propia estructura del 30 puente, y tienen una conexión física con el mismo. Además deben diseñarse para no tener una deflexión importante de manera que puedan contener efectivamente a los vehículos que impactan contra ellos. Containment systems installed in structures differ from the rest of the safety barriers in that they are an integral part of the structure of the bridge itself, and have a physical connection to it. They must also be designed so as not to have a significant deflection so that they can effectively contain the vehicles that impact them.
Hasta la fecha, la idea inicial para la reposición de pretiles en puentes existentes es 35 utilizar pretiles metálicos o de hormigón, homologados con su correspondiente To date, the initial idea for the replacement of prets on existing bridges is to use metal or concrete prets, homologated with their corresponding
Marcado CE y con unas condiciones de instalación y anclaje que muchas veces no se corresponden con las existentes en la estructura. CE marked and with installation and anchor conditions that often do not correspond to those existing in the structure.
La utilización de pretiles metálicos, obliga a la ampliación del tablero, no sólo para asegurar el anclaje de los postes sino porque al pertenecer al grupo de barreras 5 flexibles, deformándose cuando impacta un vehículo contra ellas, se tiene que contar con un espacio suficiente tras el pretil para permitir la deformación del mismo sin que el vehículo que lo acompañe incurra en peligros adicionales o más graves. En el caso de estructuras existentes, puede ser que los tableros no dispongan de dicho espacio, por lo que se obliga a la ampliación de los mismos, con la finalidad 10 de conseguir la distancia de deflexión dinámica necesaria según la normativa. The use of metal railings, forces the board to be enlarged, not only to ensure the anchoring of the posts, but because it belongs to the group of flexible barriers 5, deforming when a vehicle hits them, you have to have a sufficient space after the parapet to allow deformation thereof without the accompanying vehicle incurring additional or more serious dangers. In the case of existing structures, it may be that the boards do not have such space, so it is forced to expand them, with the purpose of achieving the necessary dynamic deflection distance according to the regulations.
Por otro lado, la ejecución de los anclajes de estos pretiles metálicos o de hormigón a los tableros existentes conlleva varias actividades de alto coste y riesgo que necesitan un mayor plazo de ejecución y además en muchos casos tampoco se 15 cuenta con canto suficiente para implementar dicho anclaje. A todo esto hay que añadir los estudios de esfuerzos necesarios en la estructura existente, debidas al peso del nuevo pretil y de las acciones que pueda transmitirle. On the other hand, the execution of the anchors of these metal or concrete prets to the existing boards entails several activities of high cost and risk that need a longer execution time and in many cases there is also not enough singing to implement said anchorage. To all this we must add the studies of necessary efforts in the existing structure, due to the weight of the new parapet and the actions that can be transmitted to it.
Descripción de la invención 20 Description of the invention
Esta invención surge por tanto de la necesidad de reducir la problemática en la reposición de pretiles en tableros de puentes existentes. La presente invención dota a los puentes existentes de la posibilidad de instalar pretiles con Marcado CE sin necesidad de ampliaciones de tablero ni anclajes al mismo, subsanando la principal 25 problemática en los casos de reposición de pretiles. Para ello, el sistema se basa en la colocación de unos pretiles de hormigón armado homologados no anclados al tablero lo cual no supone ningún tipo de innovación, solventando la problemática de la necesidad de ampliar la sección del tablero mediante la innovadora idea de colocar unos perfiles metálicos, que anclados transversalmente al canto del tablero, 30 forman una ménsula capaz de soportar el desplazamiento transversal de la barrera de hormigón en caso de impacto de un vehículo. De esta manera, el desplazamiento en caso de choque es suficiente para disipar la energía, sin que en ningún momento las ruedas del vehículo queden fuera del tablero. This invention therefore arises from the need to reduce the problem in the replacement of prets on existing bridge panels. The present invention provides existing bridges with the possibility of installing pretables with CE marking without the need for board extensions or anchors thereto, correcting the main problem in cases of replacement of prets. For this, the system is based on the placement of approved reinforced concrete prets not anchored to the board which does not imply any type of innovation, solving the problem of the need to expand the section of the board through the innovative idea of placing profiles metallic, which anchored transversely to the edge of the board, 30 form a bracket capable of supporting the transverse displacement of the concrete barrier in the event of a vehicle impact. In this way, the displacement in case of a crash is sufficient to dissipate the energy, without at any time the wheels of the vehicle being outside the dashboard.
35 35
Con este sistema se consigue: With this system you get:
Realización de las obras de reparación y conservación en el mínimo tiempo necesario, reduciendo notablemente la afección al tráfico existente. Carrying out repair and conservation works in the minimum time necessary, significantly reducing the impact on existing traffic.
Reducción de costes de ejecución, evitando la realización de actividades costosas de elaborar y disminuyendo el gasto de material necesario para la consecución de la obra. 5 Reduction of execution costs, avoiding the realization of costly activities to elaborate and reducing the cost of material necessary for the achievement of the work. 5
Reducción de los riesgos laborales intrínsecos a las labores de trabajo en áreas elevadas, ya que se minimizan las actividades a emprender en los cantos del tablero. Reduction of occupational hazards intrinsic to work in high areas, since the activities to be undertaken in the edges of the board are minimized.
Cumplimiento de la normativa existente en la Unión Europea mediante el uso de pretiles con Marcado CE. 10 Compliance with existing regulations in the European Union through the use of pretables with CE marking. 10
Incrementar la seguridad ante impacto de todos los usuarios de la vía gracias al uso de barreras de hormigón estandarizadas, que disminuyen las consecuencias de accidentes en motoristas y ayudan a la recuperación de la trayectoria de los vehículos. Increase the safety against impact of all road users thanks to the use of standardized concrete barriers, which reduce the consequences of motorist accidents and help the recovery of the vehicle's trajectory.
15 fifteen
Descripción de las figuras Description of the figures
Para complementar la descripción que se está realizando y con objeto de facilitar la comprensión de las características de la invención, se acompaña a la presente memoria descriptiva un juego de dibujos en los que, con carácter ilustrativo y no 20 limitativo, se ha representado lo siguiente: To complement the description that is being made and in order to facilitate the understanding of the features of the invention, a set of drawings is attached to the present specification in which, as an illustration and not as a limitation, the following has been represented :
Las figuras 1 y 2 muestran una vista en alzado lateral y planta del dispositivo de instalación de pretiles de la presente invención. Figures 1 and 2 show a side elevational and plan view of the installation device of prets of the present invention.
25 25
Las figuras 3 y 4 representan el desplazamiento producido en la barrera que conforma el pretil (2) después de recibir un impacto. Figures 3 and 4 represent the displacement produced in the barrier that forms the parapet (2) after receiving an impact.
Realización preferente de la invención Preferred Embodiment of the Invention
30 30
El dispositivo objeto de la presente invención prevé la colocación de un pretil de hormigón (2) armado, homologado y de unas ménsulas metálicas (3) que soporten los módulos de hormigón que conforman el pretil (2) para permitir el desplazamiento de la barrera, en caso de accidente, las cuales se anclan transversalmente en la losa que conforma el tablero (1) del puente, sobresaliendo lateralmente enrasadas 35 con dicho tablero en toda su longitud. The device object of the present invention provides for the placement of a reinforced concrete wall (2), homologated and metal brackets (3) that support the concrete modules that make up the parapet (2) to allow the movement of the barrier, in case of an accident, which are anchored transversely in the slab that forms the board (1) of the bridge, protruding laterally flush 35 with said board throughout its length.
En el ejemplo representado el anclaje de las ménsulas (3) al tablero (1) está constituido por perfiles de acero que se sueldan a una placa (4) en forma de “L” de acero, que se ancla a la losa del tablero mediante pernos (5). Las ménsulas (3) preferentemente están constituidas por un perfil de acero en doble “T”. 5 In the example shown, the anchoring of the brackets (3) to the board (1) is constituted by steel profiles that are welded to a plate (4) in the form of an "L" of steel, which is anchored to the slab of the board by bolts (5). The brackets (3) preferably consist of a double "T" steel profile. 5
Con dichas ménsulas (3), se consigue la distancia para deflexión dinámica de la barrera de hormigón (2) dada por los ensayos normalizados, en caso de accidente. El tipo de módulo utilizado responde ante un fuerte impacto con el desplazamiento que deberá ser absorbido por dichas ménsulas (3). Los perfiles metálicos de una 10 longitud de 0,60 m soportan el peso de los bloques de hormigón desplazados, de forma que los módulos prefabricados (2) ocupen el espacio existente entre ménsulas, impidiendo que el vehículo salga del tablero. With said brackets (3), the distance for dynamic deflection of the concrete barrier (2) given by the standardized tests is achieved, in case of an accident. The type of module used responds to a strong impact with the displacement that must be absorbed by said brackets (3). The metal profiles of a length of 0.60 m support the weight of the displaced concrete blocks, so that the prefabricated modules (2) occupy the space between brackets, preventing the vehicle from leaving the dashboard.
El método para instalación de pretiles de la invención prevé las fases de ejecución a 15 llevar a cabo en las estructuras de viaductos y puentes existentes siguientes: The method for installing prets of the invention provides the execution phases to be carried out in the following existing viaduct and bridge structures:
Retirada de pretiles ineficientes. Withdrawal of inefficient prets.
Ejecución de voladizo metálico formado por ménsulas (3) de perfiles metálicos en toda la longitud del puente existente; y Execution of metal overhang formed by brackets (3) of metal profiles over the entire length of the existing bridge; Y
Colocación de un sistema de pretil (2) de hormigón armado para puentes, 20 sin anclaje y homologado. Installation of a reinforced concrete bridge (2) parapet system, 20 without anchoring and homologated.
La solución diseñada ha consigue adaptar el tablero al pretil homologado de una manera sencilla, y también permite la continuidad de las juntas de dilatación de las estructuras en los que se ubican, por lo que no modifican los movimientos naturales 25 de los elementos constituyentes según las temperaturas externas. The designed solution has been able to adapt the board to the approved parapet in a simple way, and also allows the continuity of the expansion joints of the structures in which they are located, so that they do not modify the natural movements of the constituent elements according to the external temperatures
Una vez descrita suficientemente la naturaleza de la invención, así como un ejemplo de realización preferente, se hace constar a los efectos oportunos que los materiales, forma, tamaño y disposición de los elementos descritos podrán ser 30 modificados, siempre y cuando ello no suponga una alteración de las características esenciales de la invención que se reivindican a continuación: Once the nature of the invention has been sufficiently described, as well as a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the described elements may be modified, provided that this does not imply alteration of the essential features of the invention claimed below:
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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ES201531127A ES2599078B1 (en) | 2015-07-29 | 2015-07-29 | DEVICE AND METHOD FOR INSTALLING PRETILES IN EXISTING BRIDGES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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ES201531127A ES2599078B1 (en) | 2015-07-29 | 2015-07-29 | DEVICE AND METHOD FOR INSTALLING PRETILES IN EXISTING BRIDGES. |
Publications (3)
Publication Number | Publication Date |
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ES2599078A2 ES2599078A2 (en) | 2017-01-31 |
ES2599078R1 ES2599078R1 (en) | 2017-03-14 |
ES2599078B1 true ES2599078B1 (en) | 2017-12-26 |
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ES201531127A Active ES2599078B1 (en) | 2015-07-29 | 2015-07-29 | DEVICE AND METHOD FOR INSTALLING PRETILES IN EXISTING BRIDGES. |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109162202A (en) * | 2018-10-30 | 2019-01-08 | 湖南大学 | A kind of light-duty assembled anticollision barrier component and installation method |
CN109763424B (en) * | 2019-01-08 | 2021-01-19 | 中冶南方工程技术有限公司 | Fully-precast concrete anti-collision guardrail and construction method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2086626A5 (en) * | 1970-04-03 | 1971-12-31 | France Etat | |
FR2314303A1 (en) * | 1975-06-12 | 1977-01-07 | Moreau Joel | SAFETY BARRIER ESPECIALLY FOR HIGHWAY AND MANUFACTURING PROCESS OF THE SAFETY BARRIER |
FR2418837A1 (en) * | 1978-03-03 | 1979-09-28 | Cocude Rene | Through girder bridge widening system - uses replacement frame erected by cantilevering laterally from existing superstructure |
ATE387545T1 (en) * | 2002-07-12 | 2008-03-15 | Spig Schutzplanken Prod Gmbh | VEHICLE RESTRAINT SYSTEM |
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2015
- 2015-07-29 ES ES201531127A patent/ES2599078B1/en active Active
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Publication number | Publication date |
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ES2599078R1 (en) | 2017-03-14 |
ES2599078A2 (en) | 2017-01-31 |
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