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3D CAD Model of Puente de la Mujer, Woman’s Bridge
Introduction to the CAD MODEL
This is a 3D scaled-down model of the Puente de la Mujer (Woman’s Bridge), a rotating footbridge for Dock 3 of the Puerto Madero commercial district of Buenos Aires in Argentina.
It is a pedestrian bridge and gets its name as a number of surrounding streets are named after women. This model has been created by CAD FM, a social enterprise in Glasgow and is available for 3D printing free of charge for educational purposes.
The 3D model is created using CAD software and will prove beneficial for adults or children interested in the Puente de la Mujer or in understanding the uses and benefits of CAD modelling in modern design and manufacturing.
The CAD modelling software used depicts the features of the bridge in an authentic way and with maximum realism. Please note that this model is available for educational purposes and that for any technical details of the bridge you should contact the relevant authorities.
3D Model Designed
This 3D model of the Puenta de la Mujer was made using CAD modelling software and is provided in neutral formats for printing
When designing a 3D CAD model one of the first things to do is establish the relationship between the maximum dimensions of the subject of the design (in this case the Puente de la Mujer) and the printer area.
This will determine the limits of the original drawing which will ultimately become the final CAD model. In designing this 3D CAD model of the Puente de la Mujer or Women’s Bridge we faced a number of challenges.
This is very common in 3D CAD modelling and part of the learning curve is understanding different techniques to deal with problems faced in the design stage. This is the most critical stage of the process as any errors here will cause issues as the project progresses.
In this particular model, the principal structure of the bridge was very easy to design as were the bases. The difficulties faced were predominantly related to the main beam and the moving parts of the bridge.
These are where the weak points of the bridge would be and in the real construction, the architects have made provision for this by using materials to add stability and strength in the correct areas.
With 3D CAD modelling, different materials are not possible and so amendments need to be made which will result in an accurate model but one which has the stability to stand alone.
Features covered in model
This model demonstrates the unique design of the bridge including the sloping needle with its suspension cables along with the asymmetrical design and forward-angled cantilever.
Available file formats
Here are available file formats
Tips for 3D printing
The smallest feature of the model measures 2 mm, which can easily be printed with any commercially available 3D printer. The complete model can be printed with very low infills.
The model is a single piece, it can be scaled and sliced to create a larger version. If you want to print at a larger scale then you should divide the model up into small individual pieces and print each piece separately.
In this way, the multiple pieces of the model are printed separately and then joined together with glue.
About the Woman’s Bridge
The Puenta de la Mujer is a cantilever spar cable-stayed bridge (the modern version of a cable-stayed bridge).
This modern adaptation was pioneered by acclaimed Spanish architect Santiago Calatrava in Sevilla in 1992 and Calatrava himself designed the Puenta de la Mujer.
The Puenta de la Mujer is also a swing bridge and is unusual in its asymmetrical design and the fact that the cantilever is forward rather than reverse angled.
The 170 metre pedestrian bridge weighs 800 tonnes and was constructed with a single mast and cables suspending the rotating part of the bridge which turns 90 degrees to allow water traffic to pass. It is 6 metres wide and divided into three sections.
The central section, by far the longest at 102.5 metres is supported by a steel needle 34 metres tall and with a concrete core. This needles is inclined at a 39 degree angle and anchors the suspension cables which support the central span.
When it swings the far end of the bridge rests on a pylon for stability. The turning mechanism is controlled by a computer system at the eastern end of the bridge. The shape of the bridge is said to represent a couple dancing the tango with the man leaning over the woman.
The 170-metre pedestrian bridge weighs 800 tonnes, is 6.20 m wide and is divided into two fixed portions, 25 m and 32.50 m long respectively, and a middle section of 102.5 m that rotates on a white concrete pylon, allowing vessels to pass in less than two minutes.
This central section is supported by a steel “needle” with a concrete core, about 34 m high. The “needle,” inclined at a 39° angle, anchors suspension cables which support the central span.
A computer system at the eastern end of the bridge operates the turning mechanism when required.
History and Construction
The bridge was actually built in Victoria, Spain and was transported to Buenos Aries over a period of 5 months. It was donated to the city by Don Alberto L. Gonzalez and is believed to be valued at around $6 million.
The Puente de la Mujer formed part of the regeneration of the old dock of Puerta Madero in Buenos Aries which fell into ruin after a new dock was built in 1926 in Retiro a few miles north.
In the 1990s the government decided to create a chic new elite development in Puerto Madero which is characterised by the elegant dominance of the Puente de la Mujer. The bridge took 3 years to build and was inaugurated in 2001.