President of the Association of Structural Engineers of Thailand Analysis of the hypothesis of the cause of the collapse of the crane during the construction of the bridge.

Prof. Dr. Amorn Pimanmas, President of the Association of Structural Engineers of Thailand mentioned from the incident that the launching truss collapsed during the construction of the bridge as appeared in the news. Thothai reveals that it is currently processing various data. to analyze the assumption of the collapse and still cannot be concluded that caused by any cause will have to wait for an in-depth examination first

However, when processing from the event The starting point of the analysis must specify the order of the collapse that started first, which can be divided into 2 cases: 1. The construction crane fell and caused the bridge to collapse, or 2. The bridge collapsed and caused the construction crane to fall. Come on, it's not clear what it will be like. due to the failure of this bridge There is always a starting point at some point. and spread to another point, similar to the fall of dominoes

If the analysis indicates that the crane has fallen before It will lead to the evaluation of the reasons for using the crane, installing, fixing the crane to the structure, as well as the movement of the crane. Because the construction crane is a steel structure that is tall and thin. It can easily lose balance and fall if not properly held. But if the analysis results indicate that the bridge structure began to collapse first Then causing the crane to lose support. It may cause the crane to fall as well. If the latter must go and see what step the cause of the bridge collapse occurred first such as the process of prestressing wire or from other causes

In this regard, an in-depth cause analysis must examine construction drawings, design details, Calculation during construction Work procedures (Method statement) as well as the quality of materials used in construction. in order to identify the true cause.

construction of large bridge structures especially in the community It is a very dangerous and risky job. But there are already comprehensive engineering practices. however, accidents still occur frequently. This raises questions about how seriously the standards of work, supervision and construction control are enforced. All agencies involved in the construction Whether entrepreneurs, engineers, consultants, as well as the project owner. must take various actions to strictly comply with engineering principles and procedures and must consider the safety of the people as the first priority

Continuing the project Must find the real cause of the collapse first. And the contractor must present methods and measures to prevent recurrence. therefore allowing construction to continue and should be provided Independent random inspection of construction This may be from a neutral professional association or the government, randomly participating in the construction inspection. In addition, additional safety measures should be established, for example, prohibiting dangerous construction activities. During the time when people use roads intensively or to temporarily close traffic and to set a barrier to block the construction area Do not let the waste material or things fall to the road surface, etc.-Thai News Agency

Source: Thai News Agency