The application of full space supports in construction of cast-in-place box beam;

This paper describes design and construction of full space supports for continuous girgers in soft groundation area,specially discusses the method of stone concrete column is taken for dealing with soft groundation and full space supports is adopted.

The bearing system of full space supports is a multi -fulcrum bearing system.

Stability calculation of full space support of cast-in-site beam;

The construction method of full space support,which can t satisfy the construction needs of viaduct with tall piers,is replaced by the construction method of truss frame platform.

With the South Approach of the Shuangchong Bridge at Liuzhou as an example, the paper deals with the choice and describes the full space supports for the construction of continuous pre-stressed concrete box girders.

Based on the construction of Doumen interchange of contract section #10 of western coastal expressway of Guangdong province,this paper presents the construction techniques of full framing born on deep soft ground.

Aiming at the special construction situation of full framing without precompression,while directly cast-in-place box beam construction,the real time monitoring on supports in cast-in-place process was carried out,the monitoring content and method were introduced,the monitoring data was analyzed so as to make sure supports normal working,and understand its practical working situation.

Through a case study on the construction of cast-in-place box girder with full framing of a expressway, the technologies of cast-in-place construction with full framing are summarized, which provides reference for the solution to emphasis and difficulties exiting in cast-in-place construction of full framing in future.

In the course of a big span arch bridge construction,the method of erection with cableway system is used usually.