Description

Concrete Through Bolt and Anchor Bolts

Through Bolt.

Concrete through bolt and anchor bolts and through bolts are essential for connecting structural and non-structural elements to concrete. These fasteners ensure stability and load distribution in various applications, including construction, infrastructure, and industrial settings.

Types of Bolt Connections

Bolt connections involve different components such as:

• Anchor bolts – Used to secure structural elements to concrete foundations.
• Steel plates – Reinforce connections between steel structures and concrete.
• Through bolts – Provide heavy-duty fastening in walls and floors.

Load Transfer Mechanism

Anchor bolts transfer various types of loads, including:

• Tension forces – Pulling forces that act along the axis of the bolt.
• Shear forces – Forces that act perpendicular to the bolt, resisting movement in multiple directions.

Functionality.

Through bolts are designed for securing heavy objects to walls, floors, and other structural components. They handle both vertical and horizontal loads efficiently. When the bolt is tightened, the nut on the opposite end pulls into the shell, expanding outward and anchoring the bolt inside the hole.

• Anchor bolts – Allow a smooth screw to be stressed by mechanical force.
• Expansion bolts – Rely on friction by pressing against the surrounding material, creating a secure grip.

General Classification of Anchors

Anchor bolts are divided into two main categories:

1. Torque-Controlled Anchors

• The anchor is inserted into a pre-drilled hole and secured by applying a specified torque using a wrench.
• A particular sub-category of torque-controlled anchors is the wedge type.
• Tightening the bolt drives a wedge against a sleeve, expanding it to create a strong, compressed connection with the base material.
• Common applications include structural steel connections, bridge supports, and heavy machinery anchoring.

2. Displacement-Controlled Anchors

• These anchors consist of an expansion sleeve and a conical expansion plug.
• The internally threaded sleeve allows a threaded element (such as a bolt) to be inserted and tightened.
• When force is applied, the conical plug expands the sleeve, securing the anchor within the concrete.
• Used in precast concrete connections, seismic-resistant structures, and curtain wall installations.

Applications Widely used in:

• Commercial and residential construction – Securing steel beams, columns, and structural reinforcements.
• Infrastructure projects – Bridges, tunnels, and road barriers.
• Industrial settings – Heavy machinery, piping systems, and factory equipment.
• Seismic and wind-resistant structures – Ensuring stability in high-load environments.

Advantages of Using Anchor Bolts & Through Bolts

• High Load Capacity – Capable of handling extreme tension and shear forces.
• Corrosion Resistance – Available in stainless steel, galvanized, and coated finishes.
• Versatile Installation – Suitable for concrete, masonry, and structural steel.
• Reliable and Durable – Provides long-term stability for critical applications.

Anchor bolts and through bolts play a vital role in construction and engineering, offering secure and lasting connections. Selecting the right type of anchor is crucial for ensuring safety, performance, and compliance with building standards.