|
With the rapid development of China's economy , across the sea ( river ) Bridge and the city viaducts , overpasses and bridges are also a large number of construction , while scaffolding is convenient, safe and ensure that these bridges construction operations , the smooth progress of the platform . As bridge construction of temporary facilities but did not get enough attention , a lot of structure construction scaffolding collapse accident occurred in recent years , causing great economic losses and casualties . Specification and the correct design of scaffolding for construction companies to develop software is very important . Start from the accident instances scaffolding collapsed bridge construction accident resulting casualties , conducted a comprehensive analysis , unreasonable stress derived structure , non-standard construction , safety consciousness and material defect is the cause of the accident the main reason ; access to large amounts of relevant literature , analyzed the scholars in this area of research , analysis , computational theory of the structural characteristics of the scaffolding ; optimize the design and safety assessment , bridge construction scaffolding establish a mechanical model , FORTRAN language structure calculation program , and verification with SAP2000 , both calculated results show that the difference is small ; scaffold system found serious deficiencies in the force transmission mechanical calculation and analysis , then put forward the short diagonals scaffolding at the top and bottom of the set , to form a stable scaffold space diffusion force transmission structure system , the application of its calculation and analysis show that reasonable force than active scaffolding , avoid stress too concentrated ; combination of Qingdao Bay Bridge , according to a new structural system engineering , application optimized design of scaffolding ; safety assessment analysis and with three Weiwu highway engineering accidents instance . The results of this study to ensure the safety of the construction of bridges and other projects to reduce and avoid the collapse of scaffolding , has a very important practical value .
|