What are the advantages of galvanized embedded parts in terms of tensile and shear resistance?
Publish Time: 2025-12-10
In modern construction engineering, embedded parts serve as key load-bearing nodes connecting the main structure and external components, and their mechanical properties directly affect the safety and durability of the overall structure. Galvanized embedded parts—embedded components made of carbon steel substrates that have undergone hot-dip galvanizing—not only possess excellent corrosion resistance but also exhibit significant advantages in the two core mechanical properties of tensile strength, making them the preferred connection solution for various high-requirement engineering projects.1. Integral Molded Structure: Provides Reliable Pull-Out Resistancegalvanized embedded Parts are typically formed by integrally molding anchor plates and multiple anchor bars through perforated plug welding or pressure submerged arc welding, creating a highly rigid integral load-bearing unit. When external components are subjected to vertical tensile forces generated by wind loads, seismic forces, or their own weight, the anchor bars effectively transfer the tensile force to the interior of the concrete, relying on the concrete's bond force to the reinforcing bars and the mechanical anchoring at the ends to resist pull-out. Compared to post-installed anchors that rely on adhesives or expansion friction, pre-embedded parts are positioned before concrete pouring, curing synchronously with the structure, eliminating the risk of interface slippage, and resulting in higher and more stable tensile bearing capacity. Experiments show that, under the same concrete strength, the tensile bearing capacity of standard-designed galvanized embedded parts can reach 1.5–2 times that of post-installed chemical anchors, making them particularly suitable for scenarios with extremely high safety redundancy requirements, such as high-rise curtain walls and large-span canopies.2. Anchor Bar Layout Optimization: Highly Effective Resistance to Horizontal Shear ForceUnder wind pressure or seismic action, connection nodes often bear horizontal shear forces. galvanized embedded... By rationally arranging the number, diameter, and spacing of anchor bars, parts form a multi-point distributed stress system. When shear force acts on the anchor plate, the anchor bars not only bear shear deformation but also resist slippage through bonding, friction, and interlocking with the concrete. In particular, some high-performance embedded parts adopt U-shaped, L-shaped, or ribbed anchor plate designs to further enhance the shear resistance mechanism: the ends of the U-shaped bars are embedded deep into the concrete, forming a "tension-shear coupling" force; shear keys or rough surface treatment are added to the edges of the anchor plates to improve the interface's anti-slip capability. This systematic design enables galvanized embedded parts to exhibit high stiffness and low deformation in shear performance, effectively ensuring the stability of external components under dynamic loads.3. The galvanizing process does not weaken the strength of the base material but rather improves long-term reliability.Hot-dip galvanizing is a process of galvanizing cleaned... Steel components are immersed in molten zinc to form a metallurgically bonded zinc-iron alloy layer. This process does not significantly reduce the mechanical properties of the carbon steel substrate; instead, the dense zinc layer isolates water and oxygen, preventing concrete cracking or anchorage failure caused by steel corrosion and expansion. It is important to understand that steel corrosion is a major cause of the degradation of the load-bearing capacity of embedded parts. Once the anchor bars rust, their volume expansion can cause radial cracks in the surrounding concrete, significantly weakening the bond strength and thus reducing tensile and shear strength. The long-term corrosion protection provided by the galvanized layer ensures that the embedded parts maintain their initial integrity throughout their design service life. Mechanical properties ensure long-term safety with "no performance degradation."4. Working in synergy with concrete to leverage structural integrityEmbedded parts are in place before the concrete initially sets, forming an integrated system that grows and develops together with the structure. During concrete hardening, the anchor bars are evenly wrapped, eliminating aggregate breakage or micro-cracks caused by drilling, resulting in stronger bond strength and more uniform stress distribution. Under repeated loading or seismic action, this integrity effectively inhibits fatigue damage accumulation and improves the ductility and energy dissipation capacity of the joints.The mechanical advantages of galvanized embedded parts stem from the synergy of its overall load-bearing structure, scientific anchoring design, preservation of substrate performance, and long-term corrosion protection. It not only provides reliable connections with high tensile and shear strength during the initial installation phase but also continuously safeguards structural safety over decades of service. In today's era of industrialized building, lightweight curtain walls, and rapid deployment of new energy facilities, galvanized embedded parts are supporting countless visible modern engineering marvels with their "invisible strength."
