Research On Application Of Cutting Demolition In Engineering

Expressway Interchange reconstruction is an important project to improve the traffic flow of social development at the present stage.For the original interchange(e.For the original interchange(especially for interchange bridge)transformation,the original old bridge demolition work has become very critical.Old bridge removal which influence the construction schedule,and will affect the bridge vehicle traffic safety.Most of the demolition process at this stage,many construction units is the use of mechanical method and blasting demolition,across the highway and railway construction for the removal of the original building uses the common construction method is no longer adapt to,and even endanger the social vehicles and pedestrian safety.This construction method is the use of concrete static cutting machine,through the integrated scheme of support and support,reasonable construction organization and the lifting scheme,realization of the original highway traffic under the condition of large span,35 m cutting and over reinforced concrete block and overweight lifting demolition work.Static demolition method is a new way of demolition arisen in recent years,mainly including the circular disc type cutting and diamond wire cutting.Disc type cutting with disc containing diamond particles,cut straight,neat,no further treatment.Cutting noise is small,the vibration is small,almost no dust pollution of the environment,meet the needs of environmental protection,has the advantages of the traditional operation method,can not be compared.This method has been removed and the transformation of cutting wide application in various types of large-scale construction,the maximum cutting thickness of up to 2m.Steel wire cutting device is composed of a high power hydraulic block machine,combined transmission and positioning and diamond wire saw,suitable for irregular shape,large objects,underwater cutting etc..The cutting speed is 6 times of the disc type cutting,reduce have greatly improved noise produced by construction.Fast,high efficiency,no vibration,low noise,no dust pollution,without restriction,from the shape size limit characteristic advantage is particularly evident.The mass concrete structure,the concrete structure of the irregular shape is also very suitable.Compare the advantages of two,diamond wire cutting is faster,more flexible,less construction noise.Compared with the traditional method of demolition,the construction method in the construction organization design,cutting method,supporting,lifting away and so on are very important breakthrough.On the highway in opening state,can guarantee the passing vehicles and pedestrian safety,has very important significance for safe construction of the demolition of the buildings on the road traffic.Combined with the cutting technology at the present stage,through the field construction,careful management,the highway traffic condition,on an Chu Expressway Overpass Longshan interchange reconstruction project such as demolition of the "demolition method" use and success.