Archivo de la etiqueta: Bangkok

12 Grúas pórtico para proyecto de túneles en Bangkok

12 GRÚAS PÓRTICO PARA PROYECTO DE TÚNELES Y VIADUCTOS EN TAILANDIA

Estas grúas pórtico han sido suministradas a Stecon, a lo largo del último año, a través de nuestra filial en Tailandia LGHCRANES.

Las dovelas son parte fundamental en la construcción de túneles y en proyectos de obra civil, puesto que recubren a modo de anillo las paredes del túnel, formando una superficie solida y resistente.

Las dovelas que conforman el anillo tienen geometrías distintas según su posición en el anillo. Estas dovelas se montan en el túnel al abrigo de la coraza del escudo mediante el encaje de unas con otras, atornillándose en las juntas, circunferenciales y radiales.

Para el proyecto de los túneles de Bangkok, que está desarrollando la ingeniería Stecon, especialista en obra civil e infraestructuras, se requieren numerosas piezas de dovelas prefabricadas de hormigón armado, las cuales se almacenan en las campas próximas a la boca de acceso al foso.

Las campas cuentan con varios pórticos GH Cranes para el almacenado y distribución de las dovelas. Son 7 grúas pórticos que tienen montados dos polipastos birraíl de 50tn de capacidad y una altura de elevación de 18m, cada una. La luz de los pórticos es de 37,23m. Los polipastos montados en cada una de estas unidades pueden trabajar independientes o sincronizados.

Además de estas 7 unidades, la instalación cuenta con otras 4 grúas pórticos encargadas de suministrar las dovelas a la tuneladora, a través del foso. Durante el proceso de perforación la tuneladora va revistiendo las paredes del túnel con estas dovelas, por lo que se requiere un suministro fluido de piezas para  poder mantener el avance de la tuneladora.

Estos pórticos tienen una luz de 18m, con 4m de voladizo a cada lado y una altura de elevación de 9,5m + 32m de foso, teniendo dos de ellos capacidad de 22t y otros dos de 10t. La velocidad de elevación de los pórticos de 22t es de 30m/min y los mecanismos están desarrollados en grupo de trabajo M8. Estos equipos también destacan por llevar freno de seguridad de tambor.

Un quinto pórtico de capacidad de 2x80t y se utiliza para el manejo de los bloques grandes de prefabricados.

Ver vídeo del pórtico de 2x80t.

Para este proyecto GH Cranes se ha encargado de suministrar los kits de pórtico a LGHCRANES, quien se ha encargado de completar la fabricación de los productos y realizar el montaje en las instalaciones del cliente.

A lo largo del año se han instalado varios equipos en Tailandia para Stecon:

  • Campa de Nonthaburi: Instalación de siete pórticos de 2x50t para producción de segmentos de hormigón, bloques para viaducto.
  • Bangkok, distrito de Bangna: Instalación de pórtico de 22t para foso (trabajos de extracción  lodo, tuneladora, y dovelas), y pórtico de 10t, con luz de 18m y altura de elevación 9,5m en M5, para campa de stock.
  • Bangkok, distrito de Prawet: Instalación de pórtico de 22t para alimentación de dovelas en foso.
  • Bangkok: Instalación de puente birraíl de 25t con luz 8m y altura de elevación 61m.
  • Chonburi: Pórtico ya suministrado y pendiente de instalar otro pórtico de 10t.

Además de estas instalaciones, en los últimos años se han fabricado otras unidades para los proyectos de Stecon:

  • En 2014 provincia de Nonthaburi: Instalación del primer pórtico, 63+63t y luz  de 36m para producción de segmentos.
  • En 2016 misma campa de Nonthaburi: Cuatro grúas puente de 5+5t para trabajos auxiliares.

12 Grúas pórtico para proyecto de túneles en Bangkok12 Grúas pórtico para proyecto de túneles en Bangkok12 Grúas pórtico para proyecto de túneles en Bangkok

12 gantry cranes for a project of tunnels and viaducts in Thailand

12 GANTRY CRANES FOR A PROJECT OF TUNNELS AND VIADUCTS IN THAILAND

These gantry cranes were supplied to Stecon over the course of the last year through LGHCRANES, our subsidiary in Thailand.

Precast invert segments are a fundamental part of tunnels construction and civil work projects, given that they cover tunnel walls like a ring, thus creating a solid, durable surface.

The precast invert segments that make up the ring have different geometries, depending on their position in the ring. These precast invert segments are mounted on the tunnel to protect the shell of the shield by placing them together and screwing them in at the circumferential and radial joints.

For the Bangkok tunnels project, being currently developed by the Stecon engineering firm, a specialist in civil works and infrastructures, numerous precast reinforced concrete invert segments are required, which are stored in the yards near the pit’s access point.

The storage yards have various gantry cranes from GH Cranes to store and distribute the precast invert segments. Seven gantry cranes are in place with two 50t capacity travelling wire rope hoists and 18m lift height each. The gantry cranes have a 37.23m span. Each of these units’ wire rope hoists can work independently or in unison.

In addition to these 7 units, the location has 4 other gantry cranes, which are responsible for supplying the tunnelling machine with precast invert segments through the pit. During the drilling process, the tunnelling machine reinforces the tunnel’s walls with these precast invert segments, which means that a steady supply of segments is required in order for the tunnelling machine to continue advancing.

These gantry cranes have a 18m span, with 4m overhang on each side and a lifting height of 9.5m + 32m in the pit. Two of these cranes have a 22t capacity, and another two have a capacity of 10t. The 22t gantry cranes’ lifting speed is 30m/min, and the mechanisms are developed in work group M8. These units also stand out because of their drum safety brake.

A fifth, 2x80t capacity gantry crane is used to handle large prefab blocks.

See 2x80t gantry crane video.

For this project, GH Cranes has tasked LGHCRANES with supplying the gantry crane kits, and the company will be responsible for completing products manufacture and assembly at the client’s facilities.

Over the course of the year, various units were installed in Thailand for Stecon:

  • Nonthaburi storage area: Installation of seven, 2x50t gantry cranes for the production of concrete segments and blocks for a viaduct.
  • Bangkok, Bangna district: Installation of a 22t gantry crane for a pit (mud extraction works, tunnelling machine, and precast invert segments), and a 10t gantry crane with a 18m span and M5 lifting height of 9.5m for a stock storage area.
  • Bangkok, Prawet district: Installation of a 22t gantry crane to supply precast invert segments to the pit.
  • Bangkok: Installation of a 25t overhead crane with 8m span and a lifting height of 61m.
  • Chonburi: One gantry crane that had already been supplied but not installed, and another 10t gantry crane.

In addition to these facilities, other units have been manufactured in recent years for Stecon projects:

  • In 2014, Nonthaburi province: Installation of the first, 63+63t gantry crane with a 36m span for segments production.
  • In 2016, the same Nonthaburi storage area: Four, 5+5t bridge cranes for auxiliary work.

12 gantry cranes for a project of tunnels and viaducts in Thailand12 gantry cranes for a project of tunnels and viaducts in Thailand12 gantry cranes for a project of tunnels and viaducts in Thailand

160 tn gantry crane with rotating crab: the market recognizes us. LGH, a new challenge begins in Thailand.

160t GANTRY CRANE WITH ROTATING CRAB: THE MARKET RECOGNIZES US

LGH, a new challenge begins in Thailand.

In April 2016, GH launched a new production subsidiary in Chonburi, together with LGH Cranes.

Peera Laohakarniyon, as the new President of the company, and Gorka Zabaleta, as Managing Director, were responsible for making the presentations and show the facilities, taking the opportunity to announce the main strategic lines of the entity, as well as the latest product developments.

The event was attended by over 100 people, including Thai customers, distributors and business representatives from other countries of the area, and Authorities, who had the opportunity to have a tour through the facilities.

One of the last works carried out in this plant, which works at full capacity, has been the manufacture of a 160t gantry crane for handling of concrete segments, with a 2x80t rotating crab, span 37.23m, and a height of lift 15m, for Sino-Thai Engineering & Construction Public Company Limited.

The quality of our products, as well as the attention and efficiency of our service, are reflected in the loyalty of our customers. Such is the case of this company, for which in addition to an EOT crane of 25t installed in December, two gantry cranes of 10t in M5 and two others of 22t with open winch and lifting speed of 30m/min have recently being manufactured, which sum up to a new order recently received of seven gantry cranes of 100t (2x50t), six of them with Span 37.23m and H16.38m, and another with Span 40m and H16.38m.

160 tn gantry crane with rotating crab: the market recognizes us. LGH, a new challenge begins in Thailand.160 tn gantry crane with rotating crab: the market recognizes us. LGH, a new challenge begins in Thailand.160 tn gantry crane with rotating crab: the market recognizes us. LGH, a new challenge begins in Thailand.160 tn gantry crane with rotating crab: the market recognizes us. LGH, a new challenge begins in Thailand.

Manufacturing, transport and assembly process can be seen in this video: Link YouTube.