Survey Results For Concrete Construction Live Loads And Analysis Of Load Effects Using Influence Surfaces

In recent years,accident often occurred in scaffold support system during the concrete pouring,resulting in heavy casualties and huge property losses. Domestic and foreign scholars studied the scaffold mature,but the live loads during the construction period of investigation and study are limited,especially for the live load during concrete pouring process.At this stage,with the improvement of construction technology,construction of new equipment put into use,makes the working surface's live load upon the scaffold has increased during the concrete pouring process.Therefore, it is necessary to take investigation of live load.Live loads on pouting slabs during construction of multistory concrete building are investigated.These loads include the weight and number of workers,equipment,and concrete.The required load data were collected by a survey of over 10 concrete building projects.Several different probability models are investigated for the observed data.Influence surface methods are used to analysis the live load in this article, respectively,a 3D finite element model was established for slabs and beam,two models were calculated in the pressure of a pole impact and the impact of curved surface fitting to come to the impact of influence surface equation,after the accuracy tests,the influence surface equation of the curved surface to adjust the final equation.Standard values of construction load was calculated according Load Norms,and the results was compared with influence surface Method's results.