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| Steel plant design process common problems |
| Add time:1970-01-01 Source:未知 Author:admin |
| At present, China Steel plant, steel grain are subject to a wide range of applications, businesses are beginning to use steel buildings, grain in steel, Steel plant design process is often a lot of problems that will lead to unsafe buildings |
| At present, China Steel plant, steel grain are subject to a wide range of applications, businesses are beginning to use steel buildings, grain in steel, Steel plant design process is often a lot of problems that will lead to unsafe buildings, and therefore need to solve these problems in a timely manner, so as not to cause unnecessary harm. Often there will be a lot of problems in the steel plant design process, such as: a shortage or positional deviation floor and foundation problems of anchor bolts without using a template positioning if placed anchor bolts may eventually cause some dislocation and small crisis, such as engineers and manufacturers may be surprised by some of the phone entanglement. Some simple corrective measures, such as the column base plate to open new holes drilled into the expansion bolts or chemical bolts, can solve these problems, or may be a larger column base plate or the column bottom take long. In severe cases you might want to replace the foundation. All reaming floor anchor bolts are configured with thick washer under the nut, and its thickness is generally 5/16 inch to 1/2 inch. Therefore, when calculating the exposed length of the anchor bolts should be counted as the gasket thickness. The exposed parts of the anchor bolts is not enough, can not meet the correct nut screwed, is not to be neglected. These issues are best approach is reinforced by welding rod bolt threaded extended end portion of the elongated portion should be cut by 45 ° to ensure full penetration welding. Alternatively, you can use a special threaded connectors at splices, it may be necessary to clear out some of the column base plate of metal and concrete. In any case, there must be some elevation above the washer nut connecting material. Recommended plug weld nut at vacant place usually submitted by contractors should be rejected, because this method does not provide a strong connection, especially those used in tension bolts. A typical example of plug weld nut bolt damaged, occurred in a school in Louisiana, in the event of a hurricane and a small portion of the weld thread was suddenly pull the bad, reportedly occurred in spring-like effect, pillars and beams are lift into the air. Floor of cracking or warping floor cracking is one of the things the owners are complaining of perennial. Most potential factor is the poor quality of construction. Due to incorrect settings control and construction joints, floor laying shrinkage cracks can occur within a few days. For example, the commonly used section header configuration requires each bar steel mesh construction joints are cut, if not cut off the bars, the section header will have no effect. However, this is often overlooked, and if the floor is not very weak in construction joints, not enough to induce the occurrence of cracks in there, then the floor will be cracking elsewhere. Most of the settlement induced cracking of the floor because the incorrect ground treatment. The root of some of the cracks can be traced back to other less floor concrete curing. Floor warp edge is often caused by incorrect configuration settings processing and construction joints. For example, the well-known Cypriot crevice seam easier than dowels warp. By using a water stop floor without sand bedding and floor warping also relevant. How do floor cracked or warped after repair methods, as the case may be:? From ignore minor cracking warping to fill the cracks with resin, and even the floor were all key renovation. Wall dowels improper or missing from the base wall extending into the ground floor of the dowels have a lot of effect. The most common role is dowels can help reinforce the floor against the wall across the poor soil area, as well as the top of the wall to provide a lateral support. The dowels should be bent at the scene, because after projecting wall dowels can not be compacted subsoil. Unfortunately, no matter what the design drawings and paintings, dowels provided are pre-curved good, then go back in the field and bent; or dowels completely ignored without leaving out the requirements after drilling, poured into; dowels or too short can not use. Due to the number of dowels and out, incorrect dowels arrangements may become the most important root causes of friction between contractor and client base. |