Pemodelan Struktur (Kuliah As3- Sept 2013)

Building StructuresModeling and Analysis

Concepts

Building StructuresModeling and Analysis

Concepts

MODEL STRUKTUR (SAP2000)

PROSES ANALISIS & DESAIN STRUKTURPROSES ANALISIS & DESAIN STRUKTUR

• Konsep Struktur• Pemodelan Struktur• Analisis Struktur• Desain Elemen Struktur• Gambar Detail• Anggaran Biaya

Engineer Software Engineer + Software

Struktur Frame/Truss?

Model Struktur

Analisis Struktur

PENGARUH SAMBUNGAN ELEMEN STRUKTUR

Baja (Baut) Baja (Las)

Sambungan A

A

A B

Sambungan B

Diagram Momen

Sistem Struktur Bangunan Gedung

(a) Struktur Rangka Dengan Dinding Geser (Shear Wall) - (b) Struktur Rangka Pemikul Momen (SRPM) - c) Struktur Rangka Dengan Pengaku (Bracing)

Frame & Shear WallsSistem Penahan Beban Lateral(Beban Gempa, Beban Angin) Beam & Slab (Floor Diaphragm)

Sistem Penahan Beban Gravitasi (Beban Mati , Beban Hidup)

SISTEM STRUKTUR GEDUNG

• Sistem Penahan Beban Gravitasi– Berfungsi menahan beban gravitasi dan beban vertikal (Balok, Balok Anak, Pelat)

• Sistem Penahan Beban Lateral– Berfungsi menahan beban lateral/horisontal (kolom, shear walls, bracing)

• Floor Diaphragm (FD)– Sistem struktur yang mentransfer beban lateral pada Sistem Penahan Beban Lateral

The Simplified Structural System

STRUKTUR

PENGARUH LUAR- Beban (Load)- Getaran (Vibration)- Penurunan (Settlement)- Temperatur

RESPON STRUKTUR- Deformasi (Displacements)- Gaya Dalam (Internal Force)- Regangan (Strains)- Tegangan (Stress)

Structure ModelingStructure Modeling

- Real structure cannot be analyzed, it can only be “Load Tested” to determine the response- We can only analyze a “model” of the structure- We therefore need tools (computer software) to model the structure and to analyze the model

Continum to Discrete Model

(Governed by partialdifferential equations)

CONTINUOUS MODELOF STRUCTURE

(Governed by eitherpartial or total differential equations)

DISCRETE MODELOF STRUCTURE

(Governed by algebraicequations)

3D-CONTINUM MODEL