ShareApplication of anchor bolts in current construction works
Anchor bolts, also known as foundation bolts, are an important detail used to fix structures, especially steel structures, it is used a lot in the construction of electrical systems, transformer stations, home systems. workshops, factories, structural steel buildings.
Ordinary anchor bolts are not mass-produced like other standard bolts because of the requirements for each item, each project requires different specifications, so most bolts anchors are manufactured according to the technical drawings of each shipment.
Anchor Bolt Shape
Anchor bolts with common shapes are used such as J-shaped foundation bolts, L-shaped foundation bolts, LA, JA. Foundation bolts (Anchor bolts) in the shape of V or U, I …
The role of each type of Anchor Bolt
Anchor bolts are the intermediate connection between the foundation of the building and the floating part of the building, often applied in the construction of pre-engineered steel buildings, the construction of electrical systems, substations, factory systems, factories, and buildings. structural steel. In short, the main task of anchor bolts is to fix structures, especially steel structures.
Some separate functions for each type of anchor bolt are as follows:
- L-shaped anchor bolts
L-shaped foundation bolt is an L-shaped bolt with one threaded end and one bent end. The material used to make this bolt is usually stainless steel or stainless steel with a diameter of M12 ~ M64. Length 300 ~ 3000 mm, mezzanine thread type, surface black steel, wax, hot-dip galvanized or stainless steel, durability grade 4.6 – 10.9, and many other specifications. The use of L-shaped foundation bolts is used in factory systems, construction of substations, and electrical systems.
- J . style anchor bolt
Anchor bolts, J-shaped nails are bent at one end to create a J shape, including a threaded end and a curved hook. This type of bolt, like most other foundation bolts, is usually made of stainless steel or stainless steel with diameters from M12 ~ M64. Depending on the size of the thread head, the length is from 25 -100 mm, the bent head is from 45 – 120 mm. This type of bolt is widely used in creating connections in concrete beam pouring.
- A type anchor bolts
This type of bolt has a threaded end and a closed-loop bend head. Depending on the function of use, the contractor chooses the appropriate size. This type of bolt is often used to anchor the foundation of lighting poles, electric poles, pillars in construction works…
- Y style anchor bolts
This type of anchor bolt has a threaded head and a split head to create a Y-shaped shape. Diameter from 12 to 64mm, distance from the split end from 30 to 95mm, thread length from 30 to 100mm, length of the head split from 15 to 40mm. The most common type of Y-base bolts in the construction of scaffolding or fixing horizontal and vertical bars in the construction of iron and steelworks.
Anchor Bolts Construction Instructions
After selecting Anchor Bolts following the technical requirements, the next step is construction and installation. Installation steps are as follows:
- Step 1: Using bolts, use round steel D8 or D10 to temporarily fix foundation bolts (anchor bolts) in clusters, bolt clusters with host steel in beams and columns.
- Step 2: Check and locate the heart, core in each cluster and the clusters together according to the erection design drawings. Use a theodolite, a hydrometer, or an electronic total station to do this (measurement equipment must be verified).
- Step 3: Check the height of the anchor bolts up against the reinforcement +/-0.00m in the design drawing (usually about 100mm).
- Step 4: Anchor bolts must be placed perpendicular to the theoretical design bearing plane (could be the concrete face, plate face).
- Step 5: After the alignment is complete, firmly fix the bolt assemblies to the host steel, to the formwork, to the foundation to ensure that the bolts do not move or move during the concreting process.
- Step 6: Use plastic wrap to protect the thread layer Anchor bolts when installed to prevent thread damage when pouring concrete.
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