Mekanika Statis Tentu: Klasifikasi Struktur Bangunan

Summary

This video discusses the classification and structural components in civil engineering. It explains the two primary types of building structures: truss and frame. Trusses, exemplified by roof frameworks and bridge trusses, consist of two main elements: bars and joints, with internal forces primarily being axial forces, either tension or compression. Frames, on the other hand, consist of plates, beams, columns, and foundations, with internal forces being axial, shear, and moment forces. The video highlights key differences between these structures, particularly in how loads are distributed and how internal forces manifest across their components.

Takeaways

• 😀 Civil engineering structures can be classified into two types: frame structures (trusses) and portal structures (frames).
• 😀 An example of a frame structure is the roof truss and bridge truss.
• 😀 An example of a portal structure is a steel portal and a reinforced concrete portal.
• 😀 Frame structures consist of two main components: bars (or beams) and joints (or nodes).
• 😀 Joints in a frame structure are where the bars meet and are critical for bearing loads.
• 😀 The internal forces in frame structures are primarily axial forces, which include tension and compression.
• 😀 Portal structures consist of several components: plates, beams, columns, and foundations.
• 😀 In portal structures, loads can be distributed across any part of the structure, unlike frame structures, where loads are concentrated at joints.
• 😀 The internal forces in portal structures include axial forces, shear forces, and moments (bending forces).
• 😀 For plates, internal forces consist mainly of bending moments, while beams experience shear forces and moments.
• 😀 For columns, internal forces include axial forces, shear forces, and moments, while foundations also experience axial forces, shear forces, and moments.

Q & A

What are the two main types of structural classifications in civil engineering mentioned in the script?

The two main types of structural classifications in civil engineering are truss (framework) structures and portal (frame) structures.

Can you provide examples of truss or framework structures?

Examples of truss or framework structures include roof trusses and bridge trusses.

What are some examples of portal or frame structures provided in the script?

Examples of portal or frame structures are steel portals and reinforced concrete portals.

What are the key differences between truss and portal structures?

Truss structures are composed of elements like beams and nodes where forces act, while portal structures allow loads to act at any part of the structure, not just specific points. Additionally, trusses generally only experience axial forces (tension or compression), whereas portal structures experience axial forces, shear forces, and moments.

What components make up a truss structure?

A truss structure consists of two main components: the bars (or beams) and the nodes, which are the points where the bars meet.

What is the function of the nodes in a truss structure?

The nodes serve as the points where the bars in a truss structure meet, and they are the locations where loads are applied.

What types of forces occur in a truss structure?

The forces that occur in a truss structure are axial forces, which can either be tensile (pulling) or compressive (pushing).

What are the main components of a portal (frame) structure?

A portal (frame) structure consists of several components: plates, beams, columns, and foundations.

What type of forces occur in a portal (frame) structure?

In a portal (frame) structure, forces that occur include axial forces, shear forces, and bending moments.

How do the forces differ between the components of a portal (frame) structure?

In a portal (frame) structure, the plate experiences only bending moments, the beams experience both bending moments and shear forces, the columns experience axial forces, shear forces, and bending moments, and the foundations experience axial forces, shear forces, and bending moments.