In order to save your cost, southern steel engineers also by erecting guide, to help customers training its own erection mechanic, so that customers repeated use.

Commonly used frame Southern steel didn't method introduced:

Cantilever launching method, generally from the construction site control large lifting equipment can not enter the usually adopts cantilever simple equipment introduction method. The method of erecting a rapid, safe and reliable, does not require lifting equipment, workers a little training can undertake bridging missions. The so-called "cantilever launch method" is in the river cross-strait peace installed before the rock roll, most parts of bridge to the first assembled at the launch of the roller on the shore, and then use the human or mechanical traction, the bridge smoothly and slowly release, direct the rock after emplacement.

Before assembling the bridge structure calculation, a nose frame number of various combinations of various span bridges, launch weight and nasal frame end deflection, the length of the nose frame shall comply with the following rules, namely the number of section is equal to the number of the nose frame bridge in 2 and 1. For example, a nose frame double layer 24m bridge: 8/2 ten 1=5. For odd sections of bridge the node number in addition to 2 after taking an integer plus 1.

Introduction of bank rock bearing capacity calculation, such as if a frame a reinforced double single span bridges, a nose frame 33m for single row of single truss section 7, rock is arranged on the seat board before (by the river side) 0.75m. Every day the weight of the bridge is 35.7kn. Single row of single nasal frame of each weight 9.0kn. The launch of bridge weight: 11 x 35.77 * 9.0=455.7kn. Strengthen the double bridge erection, launching an shared 4 rock, every rock roller bearing: 455.7/4=113.9kn, less than the design 250kN rock, the rock is safe.

Of course, the actual erection of steel products, according to the actual situation of the construction site to use various methods such as: erecting by floating method, integral hoisting method, on-site erection method etc..