240113 PROGRAM11 MODULAR STRUCTURES 19AUG53 SLIDES

M d l St tM d l St tModular StructureModular Structure

By : Siradech SuritBy : Siradech SuritDivision of Building TechnologyDivision of Building TechnologyDivision of Building TechnologyDivision of Building TechnologyFaculty of ArchitectureFaculty of Architecture

Email : [email protected] Email : [email protected] http://www.facebook.com/Siradechhttp://www.facebook.com/Siradechhttp://www.facebook.com/Siradechhttp://www.facebook.com/Siradech

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Special Lecture in Structural Mechanics

Modular Structures

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Introduction to Structural Mechanics

What is Structures ?What is Structures ?

Structures can be defined as shapes or forms such as buildings, bridges, dams, and walls, are designed significantly to resist any applied load (force) without losing its own strength capacities and appreciable deformation. The fundamental purpose of the structure is to transmit all applied loads to the support systems and ultimately pp pp y ythrough the foundations and to the Earth surface.

2Faculty of Architecture Kasetsart University


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Basic Structural Requirements• Resist any applied load (force)• Without losing its own

• Strength, g• Stability and • Serviceability

• Transmit loads to its foundations (supports)( pp )



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The Structural Elements1. Beam2. Rod (Column)3 Slabs or Plate3. Slabs or Plate



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The basic structural elementsBeamsIt defined as slender structural members that can resist bending due to action of applied loads It is perhaps the most important and widely used structural members and can beloads. It is perhaps the most important and widely used structural members and can be classified according to its support conditions. The loads are usually applied normal to the member axis and this will cause a bending action.



Modular Structures

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The basic structural elementsRodsIt is essentially subjected to loads along the axis (like axis loads) and the members will be in compression (for a column or strut) or in tension (for tie members) which resultant inin compression (for a column or strut) or in tension (for tie members) which resultant in deformation under load is a simple change in length.



Modular Structures

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The basic structural elementsSlabs or PlatesThe members which can sustain loading over a large area with minimal thickness (surface area) The loads can be either applied normal to the plane or along the plane of the slabarea). The loads can be either applied normal to the plane or along the plane of the slab, and thus have both bending actions and axial forces combined together.



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The Structural forms1. Truss2. Frame 3 Arch3. Arch4. Cable5. Membrane



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Support condition

Roller Pin


Fixed End


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Composition of a Structure

Strength

Stability Serviceability



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Equilibrium of Forces and Moments



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Equilibrium of Forces and MomentsDicussion:

m



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Modular ?Modular ?

Definition of Modular…constructed with standardized units or dimensions allowing flexibility and variety in use; "modular furniture"; "modular homes“…Princeton dictionaryy



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Modular ?Modular ?

Marina TowersChicago



Modular Structures

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Modular ?Modular ?

Definition of Modular…constructed with standardized units or dimensions allowing flexibility and variety in use; "modular furniture"; "modular homes“…Princeton dictionaryy



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Modular ?Modular ?



Modular Structures

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Nature as InspirationNature as Inspiration

Structure must follow, Satisfy and respect the laws of nature.

Pneumatic Structure

Diatoms


Diatoms


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Pneumatic StructurePneumatic Structure



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l d fBlade of grass

V shape is sometimes furthers refined by the stiffening rib


V shape is sometimes furthers refined by the stiffening rib


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Walnut’s Shell


Tension ring in walnut’s shell


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E k l t


Exoskeleton


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Exoskeleton


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Exoskeleton


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Exoskeleton


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Membrane Structure


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Membrane Structure


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Membrane Structure


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Skeletal structure of a colonial tabulate coral. An indivudual coral polyp lives in each ti l t b ( ll d th ) Th th h h i t l l t ll d t b l hi h i


vertical tube (called a theca). The theca has horizontal plates called tabulae, which give the coral its name


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Tubular Structure



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Tubular Structure



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Tubular Structure



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Tubular Structure



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Tubular Structure



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Aiming for the minimumAiming for the minimum



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Buckminster FullerBuckminster Fuller…Do you know how much your building weights ?


Structure should comply with conditions and the limitation of economy


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Also Structure forms are designed in cross section so that the minimum of material is used to develop the maximum resistance to the forcedevelop the maximum resistance to the force



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Modular Structures

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Egg is the one of the classic examplesEgg is the one of the classic examples


240113 PROGRAM11 MODULAR STRUCTURES 19AUG53 SLIDES

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