3 Structural Design

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Bamboo at the Institute for Structural Design3

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Bamboo at the Institute for Structural DesignInstitute for Structural DesignRWTH Aachen University since 1995

- rst contact with Jörg Stamm, German

bamboo technician in Colombia

- statics calculation for a bamboo bridge in

Colombia for a design by Jörg Stamm (Prof.

Wilfried Führer, Thomas Jürges, Thomas

Stachelhaus)

- building permit and construction of the bridge

by Jörg Stamm (Ref.: Bauen mit Holz 10/95)

- since then close contact with Jörg Stamm,

Colombia



Bamboo at the Institute for Structural DesignInstitute for Structural DesignRWTH Aachen University Website since 1999

- academic training: designing with bamboo

(Dr.-Ing. Evelin Rottke)

- scientic work on the topic „building with

bamboo“

- start of the server:

http://bambus.rwth-aachen.de

- development of web pages on architecture-related bamboo topics

- examples of bamboo constructions (bridges,

spaceframes)

- research on bamboo space frames



Bamboo at the Institute for Structural Design

Preparatory Work 2001

Institute for Structural DesignRWTH Aachen University

design of the beam end:

- 6-month internship of student assistant

Christoph Tönges in Colombia with bamboo

specialist Jörg Stamm

- tests of beam end constructions for space

frames (University of Manizales, Colombia)

space frame structures in wood:

- PhD-thesis by Dr.-Ing. Hans Willi Heyden:

- „Wooden space frames with Induo anchor“

- Analysis of space frames, nodes and joints




Conical Beam Connection 2002 / 2003


space frame structures in bamboo:

- scientic work on the topic using the synergetic

effect with the dissertation mentioned above

(Dr. Evelin Rottke, Christoph Tönges)

- production of several test beams by Christoph

Tönges, rst tensile test at the Institut für

Bauforschung Aachen (IBAC)

- further development of the design of the beam

end in consideration of load capacity and

shape of the connection

- production of more test beams, more tensile

tests at the IBAC (Dr. Evelin Rottke, Dr. HansWilli Heyden, Christoph Tönges and students)





Bamboo at the Institute for Structural DesignInstitute for Structural DesignRWTH Aachen University Demo-Tetrahedron Summer Term 2003



Bamboo at the Institute for Structural DesignInstitute for Structural DesignRWTH Aachen University 1. Aachen Bamboo Workshop, March 2004

March 24 and 25, 2004:

workshop on the topic “building with bamboo“

Jörg Stamm, Colombia (practice):

practical contact to the building material bamboo

Prof. Dr. Walter Liese, Hamburg (theory):

large knowledge of biology, use and preservationof bamboo

22 international participants:

presentation of the particpants‘ individual projects

discussion of individual questions



Bamboo at the Institute for Structural DesignInstitute for Structural DesignRWTH Aachen University Load Capacity of Bamboo Beams, Investigation May 2004

Preparation of an Excel-spread sheet for easy

calculation of the load capacity of individual

bamboo beams

(Evelin Rottke in cooperation with Jörg Stamm and

Jorge Molina, Colombia)

input: diameter, wall thickness, effective length

output: tolerable pressure, tension

After comparison and validation of different

research results the following ultimate strengths

were accepted to be correct:

tension/pressure: values of the FMPA Stuttgart,

tests for the ZERI-pavilion, Bautechnik 7/2000

buckling coefcients: publication by Atrops,

Bauingenieur 44/1969




Diploma Christoph Tönges, January 2004


topic:

space frame structures in bamboo

- using the conical beam connection

- using as long bamboo culms as possible

- design of a dome by superposition of

icosahedron and dodecahedron

- beam ends connected by cup nodes

- binding at the superposition points of

icosahedron and dodecahedron

- membrane covered

- max. beam length 5 m




Bamboo Dome, April - July 2004


realisation of the BambooDome for the scout camp

4u in Luxemburg

superposition of icosahedron und dodekahedron

design: diploma Christoph Tönges

- not covered

- max. length of bamboo beams: 8 m

- height: 11 m

- diameter: 13 m

design, statics, production and construction with

students and scouts from Aachen and Luxemburg

Documents

3 Structural Design