Integral space concrete roof is an excellent roof structure, the application scope is wide. The characteristics of the structure and the construction methods get all through the experiment and the actual test, which shows the roof is superior to the traditional form. In order to validate the construction cost and how the social benefits, further researches is needed. Based on the traditional arch board roof for reference, it is researched of the construction cost, the directly benefit, the comprehensive character etc. And as a cold storage the basis, the social benefit is calculated. The results showed that the roof direct construction cost than traditional roof save about 20% ~ 45%, the social efficiency huge, for the popularization and application of the roof provides a strong basis.

A method for continuous box-girder bridge structure finite element (FE) model updating based on static-load testing is proposed. The procedure includes field static-load testing, FE modeling, FE model (parameter) updating, etc. Based on this procedure, the structure FE model updating for an expressway 5-span pre-stressed concrete continuous box-girder bridge is conducted. And the bridge structure static FE model, which is consistent with the static-load testing actual measure response, is gained. The updated FE model (parameter) is foundation of structural performance evaluation for the bridge.