Concrete embedded parts are the pre-installed structural marvels, seamlessly integrated before concrete is poured. Here's an in-depth exploration:
I. Function
Embedded parts primarily function as pivotal connection and fixation points during subsequent installation and construction. They streamline the entire process, ensuring safety and convenience. Widely utilized for the secure connection, support, and fixation of prefabricated concrete structures, they enhance concrete connectivity and anchor pipelines and other components.
II. Types
1. Steel plate embedded parts: Featuring a robust steel plate with multiple anchor bars or bolts, these parts are typically welded with bolts or reinforcing steel. Once embedded within the concrete structure, they facilitate later steel structure welding or equipment installation.
2. Angle steel embedded parts: Crafted from angle steel and anchor bars, these are ideal for angular fixation needs in structures like handrails and railings.
3. C-channel embedded parts: Resembling channel steel, these parts are formed through precise grooving, perfect for curtain wall systems to ease the installation of curtain wall hangers.
4. U-channel embedded parts: These versatile parts, when paired with bolts or anchor bars, offer adaptable installation and adjustment, suited for irregular building components.
5. Anchor bolt embedded parts: Composed of bolts and anchor bars, they are indispensable for high-strength connections in equipment foundations or other critical areas.
6. Chemical anchor bolts: These innovative embedded parts use chemical anchoring agents to secure bolts in concrete, ideal for scenarios requiring later supplementary installation.
Additionally, embedded parts are categorized based on installation methods into slot-type and post-installed embedded parts. Slot-type parts are reliably installed without harming concrete or steel reinforcements, perfect for high crack resistance needs. Conversely, post-installed parts use chemical anchor bolts, potentially compromising concrete waterproofing, thus limiting their applications.
III. Materials
Embedded parts typically consist of carbon steel or stainless steel, with varied anti-corrosion treatments tailored to specific environments:
1. Carbon steel: A prevalent choice for general structures, available in galvanized, sprayed, or other anti-corrosive finishes.
2. Stainless steel: Perfect for corrosive settings like chemical plants and coastal structures, offering superior corrosion resistance and longevity.
3. Alloy steel: Reserved for specialized structures necessitating high strength, known for exceptional mechanical properties.
Sometimes, high-strength, corrosion-resistant materials like fiber-reinforced plastic are employed for embedded parts.
IV. Characteristics
1. Strong load-bearing capacity: Typically crafted from materials like high-grade steel and fiber-reinforced plastic, embedded parts endure substantial loads effortlessly.
2. Convenient construction: Embedded parts are pre-installed, negating the need for specialized tools or techniques, thereby simplifying subsequent construction, minimizing on-site welding or drilling, and boosting efficiency.
3. Flexible adjustment: Certain embedded parts, such as slot-type, feature slots strategically distanced from the concrete edge, allowing adaptable installation and resolving suspension system force point challenges.
4. Rich design specifications: Embedded parts boast diverse design specifications tailored to fields like bridge, tunnel, and steel structure engineering, and can be customized for specific needs.
5. Good corrosion resistance: Constructed from corrosion-resistant materials like stainless steel, aluminum alloy, and plastic, or treated with galvanization or spraying, these parts offer excellent corrosion protection.
V. Applications
Embedded parts are an indispensable force in a myriad of domains, notably construction and transportation. Their remarkable versatility shines in the following applications:
1. Prefabricated Concrete Beams: In the creation of these beams, embedded bolts, resilient steel plates, and various other embedded parts come into play, significantly enhancing the beams' load-bearing capacity. This fortification ensures the beams support heavier loads, thereby boosting the stability and integrity of the entire structure.
2. Bridge Engineering: Embedded parts are pivotal in this field, as they speed up project timelines, simplify construction processes, and substantially improve the load-bearing capacity and stability of bridges. These components are the unsung heroes enhancing the longevity and safety of bridge constructions.
3. Tunnel Engineering: Within tunnels, embedded parts act as crucial support structures for elements like signal brackets and cable troughs. Their impressive corrosion resistance and robust load-bearing capacity ensure they perform reliably under challenging conditions, safeguarding the tunnel infrastructure.
4. Steel Structure Engineering: Embedded parts come into play in the intricate world of steel structure frames, where they are used to reinforce the connections between various components. This reinforcement is key to enhancing the overall stability and strength of steel structures, ensuring they withstand the test of time and environmental pressures.
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