SCAFFOLDING SYSTEMS & LAUNCHING GANTRIES FOR CONCRETE BRIDGES-BRIDGE ENGINEERING CONSULTANTS

Underslung

launching gantry

www.strukturas.com

APRIL / 2014

The Underslung Launching Gauntry LG is a high efficiency equipment specially designed to install precast concete segments in the box section

deck and typically spans in the order of 30 to 35m.

When the span activities are repetitive the achieved performance using these Launching Gantries allow in a week to install all the segments

corresponding to 2 spans and in some cases even 2,5 spans.

Each span built using the precast segments has a lenght corresponding to the distance in between the center to center of columns.

! 2SCAFFOLDING SYSTEMS & LAUNCHING GANTRIES FOR CONCRETE BRIDGES-BRIDGE ENGINEERING CONSULTANTS

www.strukturas.com

A- Electromechanicall equipmentB- Main Girder C- Noses D- Supports E- Supporting bracketsF- Beams G- Gantry Crane H- Lifting hook

Main components:A simple solution!

The Underslung Launching Gantry is a simple solution to support the precast concrete segments, being made by two almost symmetrical

halves.Each half includes a main girder and two noses, supported at three

supporting brackets pairs connected to the columns. On the top of the two main girders travels a gantry crane that perform the segments assembling. On the main girder inner web outer surface there are several support beams where the precast segments are supported

awaiting to be adjusted and prestressed.

! 3SCAFFOLDING SYSTEMS & LAUNCHING GANTRIES FOR CONCRETE BRIDGES-BRIDGE ENGINEERING CONSULTANTS

www.strukturas.com

Some of the inovations introduced by STRUKTURAS:

Independent main structure, connected only by the gantry crane, allowing to do transversal adjustments from a single track to double or even triple.

Implement hinge connections on the Underslung Launching Gantry making it possible to be used at decks with horizontal radius as small as 75m.

The hydraulic underslung support system where segments are supported allows correction of any misaligments resulting from lifting phase.

The STRUKTURAS Launching Gantries exceeds conventional design limitations in modern

bridge construction! Both Underslung and Overhead

Launching Gantry solutions consists of two main structures combined with advanced lifting

devices, creating an exceptionally flexible system for both methods of construction

from span to span or cantilevering.

Our services include: -tender stage quotation preparation -design, fabrication, delivery and technical assistance to the new equipment -rebuilt design regarding existing equipments delivered by us, for use in different conditions of the original

Ask for out reference list!

! Mr. Aquilino Raimundo Marketing and Sales Manager Strukturas as Clarksgt. 5, 3970 Langesund, Norway

Mobile (+351) 932 255 374 E-mail ar@strukturas.no Web www.strukturas.com !